Water Body Name: | San Lorenzo River |
Water Body ID: | CAR3041202219980827084709 |
Water Body Type: | River & Stream |
Lines of Evidence (LOEs) for Decision ID 4509 |
LOE ID: | 10170 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 60 |
Number of Exceedances: | 0 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 60 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. E. coli is a fecal coliform. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
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LOE ID: | 10169 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 60 |
Number of Exceedances: | 13 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 13 of 60 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. |
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Evaluation Guideline: | Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15) |
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
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LOE ID: | 4005 |
Pollutant: | Pathogens |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Not Recorded |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 0 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: | Placeholder reference pre-2006 303(d) |
Water Quality Objective/Criterion: | Unspecified |
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) |
Evaluation Guideline: | Unspecified |
Guideline Reference: | Placeholder reference pre-2006 303(d) |
Spatial Representation: | Unspecified |
Temporal Representation: | Unspecified |
Environmental Conditions: | Unspecified |
QAPP Information: | Unspecified |
QAPP Information Reference(s): | |
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LOE ID: | 10342 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 57 |
Number of Exceedances: | 3 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 3 of 57 samples exceed the criterion for Coliform, Fecal. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
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LOE ID: | 10414 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 60 |
Number of Exceedances: | 19 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 19 of 60 samples exceed the criterion for Coliform, Fecal. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 200 MPN/100 ml, nor shall more than ten percent of total samples during any 30-day period exceed 400 MPN/100 ml. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
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LOE ID: | 10415 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 60 |
Number of Exceedances: | 0 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 60 samples exceed the criterion for Coliform, Fecal. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
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LOE ID: | 10341 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 57 |
Number of Exceedances: | 28 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 28 of 57 samples exceed the criterion for Coliform, Fecal. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 200 MPN/100 ml, nor shall more than ten percent of total samples during any 30-day period exceed 400 MPN/100 ml. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
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LOE ID: | 10398 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 26 |
Number of Exceedances: | 0 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 26 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. E. coli is a fecal coliform. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 1/20/2005-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
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LOE ID: | 10397 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 26 |
Number of Exceedances: | 13 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 13 of 26 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. |
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Evaluation Guideline: | Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15) |
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 1/20/2005-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
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LOE ID: | 14154 |
Pollutant: | Enterococcus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 39 |
Number of Exceedances: | 11 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for San Lorenzo River to determine beneficial use support and results are as follows:11 of 39 samples exceed the criterion for Enterococci. |
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data |
Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. |
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Evaluation Guideline: | Single sample maximum allowable density for Enterococci in freshwater is 61 MPN/100mL (as stated in Table 4, page 15). |
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304SNL_CCL - San Lorenzo River at Laurel St.]. |
Temporal Representation: | Data was collected monthly over the time period 1/25/2002-6/20/2005. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | EPA Approved QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 19824 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 15 |
Number of Exceedances: | 10 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 10 of 15 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. |
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Evaluation Guideline: | Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15) |
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 3 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304WGP_SCC - SLR at WATERMAN GAP] |
Temporal Representation: | Data was collected over the time period 2/5/2001-2/28/2005. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
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LOE ID: | 19825 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 15 |
Number of Exceedances: | 1 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 1 of 15 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. E. coli is a fecal coliform. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 3 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304WGP_SCC - SLR at WATERMAN GAP] |
Temporal Representation: | Data was collected over the time period 2/5/2001-2/28/2005. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
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LOE ID: | 18789 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 439 |
Number of Exceedances: | 97 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 97 of 439 samples exceed the criterion for Coliform, Fecal. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 200 MPN/100 ml, nor shall more than ten percent of total samples during any 30-day period exceed 400 MPN/100 ml. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 9 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304WGP_SCC - SLR at WATERMAN GAP, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLB_SCC - SLR BELOW BOULDER CR., 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE] |
Temporal Representation: | Data was collected over the time period 1/2/1990-12/23/1991. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
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LOE ID: | 18790 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 439 |
Number of Exceedances: | 3 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 3 of 439 samples exceed the criterion for Coliform, Fecal. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 9 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304WGP_SCC - SLR at WATERMAN GAP, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLB_SCC - SLR BELOW BOULDER CR., 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE] |
Temporal Representation: | Data was collected over the time period 1/2/1990-12/23/1991. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
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LOE ID: | 18461 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. E. coli is a fecal coliform. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River, 304-SANLO-26 - Garden of Eden] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 18460 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 10 |
Number of Exceedances: | 2 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 2 of 10 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. |
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Evaluation Guideline: | Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15) |
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River, 304-SANLO-26 - Garden of Eden] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 14170 |
Pollutant: | Enterococcus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 39 |
Number of Exceedances: | 0 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Enterococci. |
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. Enterococcus is a fecal coliform. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304SNL_CCL - San Lorenzo River at Laurel St.] |
Temporal Representation: | Data was collected over the time period 1/25/2002-6/20/2005. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | EPA Approved QAPP. |
QAPP Information Reference(s): | |
| |
LOE ID: | 14030 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 39 |
Number of Exceedances: | 20 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for San Lorenzo River to determine beneficial use support and results are as follows: 20 of 39 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data |
Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. |
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Evaluation Guideline: | Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15) |
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304SNL_CCL - San Lorenzo River at Laurel St.] |
Temporal Representation: | Data was collected over the time period 1/25/2002-6/20/2005. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | EPA Approved QAPP. |
QAPP Information Reference(s): | |
| |
LOE ID: | 14031 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 39 |
Number of Exceedances: | 1 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for San Lorenzo River to determine beneficial use support and results are as follows: 1 of 39 samples exceed the criterion for Escherichia coli. |
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. E. coli is a fecal coliform. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304SNL_CCL - San Lorenzo River at Laurel St.] |
Temporal Representation: | Data was collected over the time period 1/25/2002-6/20/2005. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | EPA Approved QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 4193 |
LOE ID: | 17725 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 113 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 113 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). |
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 11/13/2001-3/6/2007. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9208 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 60 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 60 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9201 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 56 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 56 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). |
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9209 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 60 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 60 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). |
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 1840 |
Pollutant: | Nutrients |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Not Recorded |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 0 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | |
Objective/Criterion Reference: | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | QA Info Missing |
QAPP Information Reference(s): | |
| |
LOE ID: | 18604 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 3064 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 3064 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). |
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 12 monitoring sites [ 304SLT_SCC - SLR at BIG TREES, 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLB_SCC - SLR BELOW BOULDER CR., 304SLA_SCC - SLR ABOVE LOVE CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLL_SCC - SLR at LOMOND ST. BRIDGE] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 18603 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 3064 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 3064 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 12 monitoring sites [ 304SLT_SCC - SLR at BIG TREES, 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLB_SCC - SLR BELOW BOULDER CR., 304SLA_SCC - SLR ABOVE LOVE CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLL_SCC - SLR at LOMOND ST. BRIDGE] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9200 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 56 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 56 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17724 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 113 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 113 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 11/13/2001-3/6/2007. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 18272 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). |
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River, 304-SANLO-26 - Garden of Eden] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 18271 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River, 304-SANLO-26 - Garden of Eden] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 13936 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 39 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). |
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304SNL_CCL - San Lorenzo River at Laurel St.] |
Temporal Representation: | Data was collected over the time period 1/25/2002-6/20/2005. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | EPA Approved QAPP. |
QAPP Information Reference(s): | |
| |
LOE ID: | 13935 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 39 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Nitrate as N. |
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304SNL_CCL - San Lorenzo River at Laurel St.] |
Temporal Representation: | Data was collected over the time period 1/25/2002-6/20/2005. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | EPA Approved QAPP. |
QAPP Information Reference(s): | |
| |
LOE ID: | 25283 |
Pollutant: | Nitrogen, Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 498 |
Number of Exceedances: | 237 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Data collected by Santa Cruz County Environmental Health staff from the San Lorenzo River near Felton (San Lorenzo River at Big Trees (304SLT_SCC) are assessed relative to the numeric target for Nitrate, established by Resolution number 00-003 adopting the TMDL for nitrate in the San Lorenzo River Watershed. 327 of 498 samples exceed the numeric target. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin has the following narrative General Objective: Waters shall not contain taste or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, that cause nuisance, or that adversely affect beneficial uses. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Resolution number 00-003 adopting the TMDL for nitrate in the San Lorenzo River Watershed established the following numeric target for Nitrate: San Lorenzo River at Felton, 1.5 mg/L Nitrate as NO3 (or 0.33 mg/L Nitrate as N). |
Guideline Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Spatial Representation: | Data were collected by Santa Cruz County Environmental Health staff from the San Lorenzo River near Felton (San Lorenzo River at Big Trees (304SLT_SCC). |
Temporal Representation: | Santa Cruz County Environmental Health staff conducted monitoring at San Lorenzo River at Big Trees (304SLB) between January 1997 and August 2006. |
Environmental Conditions: | |
QAPP Information: | Santa Cruz County Environmental Health monitoring program QA. |
QAPP Information Reference(s): | |
| |
LOE ID: | 25284 |
Pollutant: | Nitrogen, Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 15 |
Number of Exceedances: | 7 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Data collected by CCAMP staff at San Lorenzo River at Big Trees (304SLB) are assessed relative to the numeric target for Nitrate, established by Resolution number 00-003 adopting the TMDL for nitrate in the San Lorenzo River Watershed. 244 of 513 samples exceed the numeric target. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin has the following narrative General Objective: Waters shall not contain taste or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, that cause nuisance, or that adversely affect beneficial uses. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Resolution number 00-003 adopting the TMDL for nitrate in the San Lorenzo River Watershed established the following numeric target for Nitrate: San Lorenzo River at Felton, 1.5 mg/L Nitrate as NO3 (or 0.33 mg/L Nitrate as N). |
Guideline Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Spatial Representation: | Data collected by CCAMP staff at one site, San Lorenzo River at Big Trees (304SLB). |
Temporal Representation: | CCAMP staff conducted monthly monitoring at this site between January 2005 and March 2006 |
Environmental Conditions: | |
QAPP Information: | CCAMP monitoring and data analysis is conducted following the SWAMP QAPP (Puckett et al., 2002). |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13211 |
LOE ID: | 9213 |
Pollutant: | Ammonia (Unionized) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 54 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 54 samples exceed the criterion for Ammonia as N, Unionized. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9205 |
Pollutant: | Ammonia (Unionized) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 56 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 56 samples exceed the criterion for Ammonia as N, Unionized. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15632 |
LOE ID: | 15818 |
Pollutant: | Anthracene |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Anthracene. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for anthracene is 845 ug/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11918 |
LOE ID: | 15628 |
Pollutant: | Arsenic |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Arsenic. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for arsenic is 33 mg/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15633 |
LOE ID: | 15582 |
Pollutant: | Benzo(a)pyrene (3,4-Benzopyrene -7-d) |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Benzo(a)pyrene. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Benzo(a)Pyrene is 1450 ug/Kg dry weight (Macdonald et al. 2000) |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15634 |
LOE ID: | 15497 |
Pollutant: | Benzo[a]anthracene |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Benzo(a)anthracene. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Benzo(a)anthracene is 1050 ug/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11896 |
LOE ID: | 9214 |
Pollutant: | Boron |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 49 |
Number of Exceedances: | 5 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 5 of 49 samples exceed the criterion for Boron, dissolved. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. In addition, waters used for irrigation and livestock watering shall not exceed concentrations for those chemicals listed in Table 3.4 (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). Table 3-4 (page III-9) lists the maximum concentration for boron for irrigation supply is 0.75 mg/L. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9206 |
Pollutant: | Boron |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 60 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 1 of 60 samples exceed the criterion for Boron, dissolved. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. In addition, waters used for irrigation and livestock watering shall not exceed concentrations for those chemicals listed in Table 3.4 (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). Table 3-4 (page III-9) lists the maximum concentration for boron for irrigation supply is 0.75 mg/L. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11920 |
LOE ID: | 15443 |
Pollutant: | Cadmium |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cadmium. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for cadmium is 4.98 mg/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11897 |
LOE ID: | 9215 |
Pollutant: | Chloride |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 49 |
Number of Exceedances: | 23 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 23 of 49 samples exceed the criterion for Chloride. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when chloride exceeds 106 mg/L in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11898 |
LOE ID: | 12025 |
Pollutant: | Chlorophyll-a |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlorophyll a. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | |
Water quality standards table | |
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. |
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards |
North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 7/6/2001. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9207 |
Pollutant: | Chlorophyll-a |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 62 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 62 samples exceed the criterion for Chlorophyll a. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | |
Water quality standards table | |
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. |
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards |
North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9203 |
Pollutant: | Chlorophyll-a |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 55 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 55 samples exceed the criterion for Chlorophyll a. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | |
Water quality standards table | |
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. |
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards |
North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11921 |
LOE ID: | 15901 |
Pollutant: | Chromium (total) |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chromium. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for chromium is 111 mg/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15635 |
LOE ID: | 16103 |
Pollutant: | Chrysene (C1-C4) |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chrysene. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Chrysene is 1290 ug/Kg dry weight (Macdonald et al. 2000) |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11928 |
LOE ID: | 16795 |
Pollutant: | Copper |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Copper. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for cooper is 149 mg/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 17029 |
LOE ID: | 29949 |
Pollutant: | DDD (Dichlorodiphenyldichloroethane) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | Human Health Criteria, for the consumption of water, set for 4,4'-DDD is 0.00083 ug/L (USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000)). |
Objective/Criterion Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): | |
| |
LOE ID: | 29950 |
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | Human Health Criteria, for the consumption of water, set for 4,4'-DDE is 0.00059 ug/L (USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000)). |
Objective/Criterion Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): | |
| |
LOE ID: | 29948 |
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | Human Health Criteria, for the consumption of water, set for 4,4'-DDT is 0.00057 ug/L (USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000)). |
Objective/Criterion Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): | |
| |
LOE ID: | 29947 |
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentration which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or aquatic life (Central Coast Water Quality Control Plan, general Objective, Section II.A.2.a). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | The Criteria Continuous Concentration (CCC) or the the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4 days) without deleterious effects for 4,4'-DDT is 0.001 ug/L (USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000.) ) |
Guideline Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15644 |
LOE ID: | 16662 |
Pollutant: | Diazinon |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Diazinon. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | One hour average maximum concentration 0.16 ug/L as stated in Sipmann and Finlayson (2000). |
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 16805 |
Pollutant: | Diazinon |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for Diazinon. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | One hour average maximum concentration 0.16 ug/L as stated in Sipmann and Finlayson (2000). |
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304SL9-San Lorenzo River at Highway 9, 304SLB001 - San Lorenzo River at Big Trees, 304RIV-San Lorenzo River at Crossing Road] |
Temporal Representation: | Data was collected over the time period 1/3/2006-5/30/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 16704 |
Pollutant: | Diazinon |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Diazinon. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | One hour average maximum concentration 0.16 ug/L as stated in Sipmann and Finlayson (2000). |
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 5/3/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15636 |
LOE ID: | 16494 |
Pollutant: | Dieldrin |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dieldrin. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for dieldrin is 61.8 ug/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 29945 |
Pollutant: | Dieldrin |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentration which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or aquatic life (Central Coast Water Quality Control Plan, general Objective, Section II.A.2.a). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | The Criteria Continuous Concentration (CCC) or the the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4 days) without deleterious effects for Dieldrin is 0.056 ug/L (USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000.) ) |
Guideline Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): | |
| |
LOE ID: | 29946 |
Pollutant: | Dieldrin |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | Human Health Criteria, for the consumption of water, set for Dieldrin is 0.00014 ug/L(USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000)). |
Objective/Criterion Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11903 |
LOE ID: | 18566 |
Pollutant: | Electrical Conductivity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 5325 |
Number of Exceedances: | 604 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 604 of 5325 samples exceed the criterion for Conductivity(Us). |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 13 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLB_SCC - SLR BELOW BOULDER CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17888 |
Pollutant: | Electrical Conductivity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 36 |
Number of Exceedances: | 36 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 36 of 36 samples exceed the criterion for Conductivity(ms). |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 8/24/2004-12/27/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17609 |
Pollutant: | Electrical Conductivity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 13 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 1 of 13 samples exceed the criterion for Conductivity(Us). |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-26 - Garden of Eden, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17526 |
Pollutant: | Electrical Conductivity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 68 |
Number of Exceedances: | 4 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 4 of 68 samples exceed the criterion for Conductivity(Us). |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 12/4/2001-11/2/2004. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10358 |
Pollutant: | Electrical Conductivity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 56 |
Number of Exceedances: | 10 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 10 of 56 samples exceed the criterion for Conductivity(Us). |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10377 |
Pollutant: | Electrical Conductivity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 10 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 1 of 10 samples exceed the criterion for Conductivity(Us). |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 5 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/26/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10168 |
Pollutant: | Electrical Conductivity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 60 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 60 samples exceed the criterion for Conductivity(Us). |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15637 |
LOE ID: | 16577 |
Pollutant: | Endrin |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for endrin is 207 ug/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15638 |
LOE ID: | 16410 |
Pollutant: | Fluoranthene |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Fluoranthene. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Fluoranthene is 2,230 ug/Kg dry weight (Macdonald et al. 2000) |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15639 |
LOE ID: | 17291 |
Pollutant: | Fluorene |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Fluorene. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for fluorene is 536 ug/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11923 |
LOE ID: | 17376 |
Pollutant: | Lead |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Lead. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for lead is 128 mg/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11899 |
LOE ID: | 17842 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 98 |
Number of Exceedances: | 22 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 22 of 98 samples exceed the criterion for Oxygen, Dissolved. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 2/13/2002-12/27/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 18229 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 14 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 1 of 14 samples exceed the criterion for Oxygen, Dissolved. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-26 - Garden of Eden, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 11988 |
Pollutant: | Dissolved oxygen saturation |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 56 |
Number of Exceedances: | 11 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 11 of 56 samples exceed the criterion for Oxygen, Saturation. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12007 |
Pollutant: | Dissolved oxygen saturation |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 12 |
Number of Exceedances: | 3 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 3 of 12 samples exceed the criterion for Oxygen, Saturation. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 5 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/26/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12026 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 60 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 60 samples exceed the criterion for Oxygen, Dissolved. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12027 |
Pollutant: | Dissolved oxygen saturation |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 60 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 2 of 60 samples exceed the criterion for Oxygen, Saturation. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 11987 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 56 |
Number of Exceedances: | 4 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 4 of 56 samples exceed the criterion for Oxygen, Dissolved. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19791 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 5219 |
Number of Exceedances: | 252 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 252 of 5219 samples exceed the criterion for Oxygen, Dissolved. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 12 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLB_SCC - SLR BELOW BOULDER CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12006 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 12 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 2 of 12 samples exceed the criterion for Oxygen, Dissolved. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 5 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/26/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19854 |
Pollutant: | Dissolved oxygen saturation |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1506 |
Number of Exceedances: | 197 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 197 of 1506 samples exceed the criterion for Oxygen, Saturation. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 12 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLB_SCC - SLR BELOW BOULDER CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS] |
Temporal Representation: | Data was collected over the time period 6/25/1990-6/2/1998. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11924 |
LOE ID: | 17190 |
Pollutant: | Mercury |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Mercury. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for mercury is 1.06 mg/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15640 |
LOE ID: | 17013 |
Pollutant: | Naphthalene |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Naphthalene. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for naphthalene is 561 ug/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11925 |
LOE ID: | 17094 |
Pollutant: | Nickel |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Nickel. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for nickel is 48.6 mg/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11895 |
LOE ID: | 17817 |
Pollutant: | Ammonia as Nitrogen |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 113 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 113 samples exceed the criterion for Ammonia As N, Total. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006). |
Objective/Criterion Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." |
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 11/13/2001-3/6/2007. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9204 |
Pollutant: | Ammonia as Nitrogen |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 60 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 60 samples exceed the criterion for Ammonia as N, Total. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006). |
Objective/Criterion Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." |
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 13951 |
Pollutant: | Ammonia as Nitrogen |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 20 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 20 samples exceed the criterion for Ammonia As N, Total. |
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data |
Water Quality Objective/Criterion: | USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006). |
Objective/Criterion Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." |
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304SNL_CCL - San Lorenzo River at Laurel St.] |
Temporal Representation: | Data was collected over the time period 10/21/2003-6/20/2005. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | EPA Approved QAPP. |
QAPP Information Reference(s): | |
| |
LOE ID: | 9212 |
Pollutant: | Ammonia as Nitrogen |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 56 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 56 samples exceed the criterion for Ammonia as N, Total. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006). |
Objective/Criterion Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." |
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 18788 |
Pollutant: | Ammonia as Nitrogen |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for Ammonia As N, Total. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006). |
Objective/Criterion Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." |
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLT_SCC - SLR at BIG TREES, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS] |
Temporal Representation: | Data was collected over the time period 3/16/1990-10/29/2001. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15641 |
LOE ID: | 16990 |
Pollutant: | Phenanthrene |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Phenanthrene. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Phenanthrene is 1170 ug/Kg dry weight (Macdonald et al. 2000) |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15642 |
LOE ID: | 17880 |
Pollutant: | Pyrene |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Pyrene. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Pyrene is 1520 ug/Kg dry weight (Macdonald et al. 2000) |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11909 |
LOE ID: | 11989 |
Pollutant: | Salinity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 55 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 55 samples exceed the criterion for Salinity. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when salinity exceeds 3.0 ppt in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 6/5/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12042 |
Pollutant: | Salinity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 60 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 60 samples exceed the criterion for Salinity. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when salinity exceeds 3.0 ppt in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12008 |
Pollutant: | Salinity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 3 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Salinity. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when salinity exceeds 3.0 ppt in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/29/2001. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13224 |
LOE ID: | 24263 |
Pollutant: | Invertebrate Toxicity |
LOE Subgroup: | Toxicity |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | TOXICITY TESTING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. |
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 5/3/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 24264 |
Pollutant: | Invertebrate Toxicity |
LOE Subgroup: | Toxicity |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | TOXICITY TESTING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. |
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11911 |
LOE ID: | 9202 |
Pollutant: | Sodium |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 49 |
Number of Exceedances: | 23 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 23 of 49 samples exceed the criterion for Sodium. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when sodium exceeds 69 mg/L in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11913 |
LOE ID: | 18615 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 14 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 14 samples exceed the criterion for Water Temperature. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). |
Guideline Reference: | Inland Fishes of California |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-26 - Garden of Eden, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12043 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 60 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 2 of 60 samples exceed the criterion for Water Temperature. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). |
Guideline Reference: | Inland Fishes of California |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 11991 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 56 |
Number of Exceedances: | 7 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 7 of 56 samples exceed the criterion for Water Temperature. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). |
Guideline Reference: | Inland Fishes of California |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12024 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 12 samples exceed the criterion for Water Temperature. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). |
Guideline Reference: | Inland Fishes of California |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 5 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/26/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17400 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 100 |
Number of Exceedances: | 7 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 7 of 100 samples exceed the criterion for Water Temperature. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). |
Guideline Reference: | Inland Fishes of California |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 2/13/2002-12/27/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19859 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 5578 |
Number of Exceedances: | 283 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 283 of 5578 samples exceed the criterion for Water Temperature. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). |
Guideline Reference: | Inland Fishes of California |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 13 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLB_SCC - SLR BELOW BOULDER CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11927 |
LOE ID: | 19936 |
Pollutant: | Turbidity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 4878 |
Number of Exceedances: | 189 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 189 of 4878 samples exceed the criterion for Turbidity(NTU). |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. |
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 13 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLB_SCC - SLR BELOW BOULDER CR., 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304WGP_SCC - SLR at WATERMAN GAP, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS, 304SLR_SCC - SLR at RIVER ST., B.C.] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12044 |
Pollutant: | Turbidity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 33 |
Number of Exceedances: | 5 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 5 of 33 samples exceed the criterion for Turbidity(NTU). |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. |
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 2/16/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17523 |
Pollutant: | Turbidity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 3 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 3 of 8 samples exceed the criterion for Turbidity(NTU). |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. |
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 10/19/2005-12/27/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 11990 |
Pollutant: | Turbidity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 49 |
Number of Exceedances: | 7 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 7 of 49 samples exceed the criterion for Turbidity(NTU). |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. |
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 18706 |
Pollutant: | Turbidity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 4 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Turbidity(NTU). |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. |
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ 304-SANLO-26 - Garden of Eden, 304-SANLO-27 - Junction Park - San Lorenzo River] |
Temporal Representation: | Data was collected over the time period 5/7/2005-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 12009 |
Pollutant: | Turbidity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 3 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Turbidity(NTU). |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. |
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/29/2001. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13226 |
LOE ID: | 24260 |
Pollutant: | Invertebrate Toxicity |
LOE Subgroup: | Toxicity |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 0 |
Data and Information Type: | TOXICITY TESTING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for Toxicity, Ceriodaphnia dubia Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. |
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304SL9-San Lorenzo River at Highway 9, 304SLB001 - San Lorenzo River at Big Trees, 304RIV-San Lorenzo River at Crossing Road] |
Temporal Representation: | Data was collected over the time period 1/3/2006-5/30/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 24266 |
Pollutant: | Vertebrate Toxicity |
LOE Subgroup: | Toxicity |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 0 |
Data and Information Type: | TOXICITY TESTING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for Toxicity, Pimephales promelas Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. |
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304SL9-San Lorenzo River at Highway 9, 304SLB001 - San Lorenzo River at Big Trees, 304RIV-San Lorenzo River at Crossing Road] |
Temporal Representation: | Data was collected over the time period 1/3/2006-5/30/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 24267 |
Pollutant: | Plant Toxicity |
LOE Subgroup: | Toxicity |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 0 |
Data and Information Type: | TOXICITY TESTING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for Toxicity, Selenastrum capricornutum Growth (Cell Density) 4 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | Significant reduction in cell count of test organism relative to the control (alpha < 0.05) and cell count <80% of control. |
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304SL9-San Lorenzo River at Highway 9, 304SLB001 - San Lorenzo River at Big Trees, 304RIV-San Lorenzo River at Crossing Road] |
Temporal Representation: | Data was collected over the time period 1/3/2006-5/30/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11926 |
LOE ID: | 17689 |
Pollutant: | Zinc |
LOE Subgroup: | Pollutant-Sediment |
Matrix: | Sediment |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Zinc. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for zinc is 459 mg/Kg dry weight (MacDonald et al. 2000). |
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11915 |
LOE ID: | 19012 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 14 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 14 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-26 - Garden of Eden, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10189 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 56 |
Number of Exceedances: | 5 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 5 of 56 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19014 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 14 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 14 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-26 - Garden of Eden, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17596 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 101 |
Number of Exceedances: | 14 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 14 of 101 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 2/13/2002-12/27/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17593 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 101 |
Number of Exceedances: | 11 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 11 of 101 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 2/13/2002-12/27/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17594 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 101 |
Number of Exceedances: | 16 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 16 of 101 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 2/13/2002-12/27/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17595 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 101 |
Number of Exceedances: | 14 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 14 of 101 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 2/13/2002-12/27/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 17611 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 101 |
Number of Exceedances: | 14 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Lorenzo River to determine beneficial use support and results are as follows: 14 of 101 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A |
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 2 monitoring sites [ SL-SOQ SL-BRO - San Lorenzo River at Broadway] |
Temporal Representation: | Data was collected over the time period 2/13/2002-12/27/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10359 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 55 |
Number of Exceedances: | 4 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 4 of 55 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10394 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 5 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/26/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10395 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 5 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/26/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10396 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 5 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/26/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10376 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 55 |
Number of Exceedances: | 6 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 6 of 55 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10378 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 5 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/26/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10379 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 5 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 7/6/2001-8/26/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10185 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 56 |
Number of Exceedances: | 3 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 3 of 56 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10186 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 56 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 1 of 56 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10360 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 55 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 1 of 55 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10361 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 55 |
Number of Exceedances: | 6 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 6 of 55 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10362 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 55 |
Number of Exceedances: | 6 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for San Lorenzo River to determine beneficial use support and results are as follows: 6 of 55 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10187 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 56 |
Number of Exceedances: | 5 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 5 of 56 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 10188 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 56 |
Number of Exceedances: | 5 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Lorenzo River to determine beneficial use support and results are as follows: 5 of 56 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 |
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304RIV-San Lorenzo River at Crossing Road, 304SL9-San Lorenzo River at Highway 9, 304SLB-San Lorenzo River at Big Trees, 304SLE-San Lorenzo above Bear Creek] |
Temporal Representation: | Data was collected over the time period 1/20/2005-3/8/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19013 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 14 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 2 of 14 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-26 - Garden of Eden, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19914 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 5556 |
Number of Exceedances: | 316 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 316 of 5556 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 13 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLB_SCC - SLR BELOW BOULDER CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19930 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 5556 |
Number of Exceedances: | 277 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 277 of 5556 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 13 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLB_SCC - SLR BELOW BOULDER CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19929 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 5556 |
Number of Exceedances: | 277 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 277 of 5556 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 13 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLB_SCC - SLR BELOW BOULDER CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19031 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 14 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 14 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-26 - Garden of Eden, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19913 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Agricultural Supply |
Number of Samples: | 5556 |
Number of Exceedances: | 189 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 189 of 5556 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 13 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLB_SCC - SLR BELOW BOULDER CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19928 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 5556 |
Number of Exceedances: | 277 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Lorenzo River to determine beneficial use support and results are as follows: 277 of 5556 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 |
Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 13 monitoring sites [ 304SLZ_SCC - SLR RIVERMOUTH at TRESTLE, 304SLT_SCC - SLR at BIG TREES, 304SLH_SCC - SLR at HIGHLANDS PARK, 304SLS_SCC - SLR at SYCAMORE GROVE, 304SLU_SCC - SLR at BROADWY/LAUREL ST BRIDGE, 304SLA_SCC - SLR ABOVE LOVE CR., 304SLB_SCC - SLR BELOW BOULDER CR., 304WGP_SCC - SLR at WATERMAN GAP, 304SLL_SCC - SLR at LOMOND ST. BRIDGE, 304SLM_SCC - SLR at MT. CROSS BRIDGE, 304SLR_SCC - SLR at RIVER ST., B.C., 304SLP_SCC - SLR at PACIFIC AVE., BROOKDALE, 304SLF_SCC - SLR at FERN DR., S.L. WOODS] |
Temporal Representation: | Data was collected over the time period 1/2/1990-8/7/2006. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. |
QAPP Information Reference(s): | |
| |
LOE ID: | 19032 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 14 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 14 samples exceed the criterion for pH. |
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 |
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304-SANLO-22 - San Lorenzo River Mouth, 304-SANLO-26 - Garden of Eden, 304-SANLO-21 - San Lorenzo River Downtown, 304-SANLO-27 - Junction Park - San Lorenzo River] |
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 17027 |
LOE ID: | 29892 |
Pollutant: | Chlordane |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 9 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. Two of the nine samples exceed the Human Health Criteria. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | Human Health Criteria, for the consumption of water, set for Chlordane is 0.00057 ug/L (USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000)). |
Objective/Criterion Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): | |
| |
LOE ID: | 29891 |
Pollutant: | Chlordane |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentration which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or aquatic life (Central Coast Water Quality Control Plan, general Objective, Section II.A.2.a). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | The Criteria Continuous Concentration (CCC) or the the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4 days) without deleterious effects for Chlordane is 0.0043 ug/L (USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000.) ) |
Guideline Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 15643 |
LOE ID: | 16281 |
Pollutant: | Chlorpyrifos |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlorpyrifos. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Final Data File used for assessment: SWAMP Sediment Chemistry Data from Region 3 Harbors, 2004 | |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | One hour average maximum concentration 0.025 ug/L as stated in Sipmann and Finlayson (2000). |
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 5/3/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 16157 |
Pollutant: | Chlorpyrifos |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 2 of 8 samples exceed the criterion for Chlorpyrifos. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Final Data File used for assessment: SWAMP Sediment Chemistry Data from Region 3 Harbors, 2004 | |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | One hour average maximum concentration 0.025 ug/L as stated in Sipmann and Finlayson (2000). |
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 4 monitoring sites [ 304LOR-San Lorenzo Estuary at Laurel Street, 304SL9-San Lorenzo River at Highway 9, 304SLB001 - San Lorenzo River at Big Trees, 304RIV-San Lorenzo River at Crossing Road] |
Temporal Representation: | Data was collected over the time period 1/3/2006-5/30/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): | |
| |
LOE ID: | 16036 |
Pollutant: | Chlorpyrifos |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for San Lorenzo River to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Chlorpyrifos. |
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 |
Final Data File used for assessment: SWAMP Sediment Chemistry Data from Region 3 Harbors, 2004 | |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). |
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Water Quality Control Plan Central Coast Region (R3) Basin Plan | |
Evaluation Guideline: | One hour average maximum concentration 0.025 ug/L as stated in Sipmann and Finlayson (2000). |
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game |
Spatial Representation: | Data for this line of evidence for San Lorenzo River was collected at 1 monitoring site [ 304LOR-San Lorenzo Estuary at Laurel Street] |
Temporal Representation: | Data was collected on a single day 3/29/2004. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). |
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 17031 |
LOE ID: | 29952 |
Pollutant: | PCBs (Polychlorinated biphenyls) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. None of the nine samples exceed the Criteria Continuous Concentration for PCB's. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentration which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or aquatic life (Central Coast Water Quality Control Plan, general Objective, Section II.A.2.a). |
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan |
Evaluation Guideline: | The Criteria Continuous Concentration (CCC) or the the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4 days) without deleterious effects for PCB's is 14.0 ug/L (USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000.) ) |
Guideline Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): | |
| |
LOE ID: | 29951 |
Pollutant: | PCBs (Polychlorinated biphenyls) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 9 |
Number of Exceedances: | 3 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Nine samples were analyzed by solid phase extraction after an approximately 30 day exposure, in-situ, to known volumes of water. Nine separate sample events were conducted by CCLEAN staff. Three of nine samples exceed the Human Health Criteria. |
Data Reference: | Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data |
Water Quality Objective/Criterion: | Human Health Criteria, for the consumption of water, set for PCB's is 0.00017 ug/L (USEPA. Federal Register, 40 CFR Part 131 (Vol.65, No. 97. May 18, 2000)). |
Objective/Criterion Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA. |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Single sample location, San Lorenzo River, adjacent to USGS gauging station on west shore (Lat, N 36.9909, Long, W 122.0313) |
Temporal Representation: | Nine separate (approximate 30 day) sample events. The first was initiated on October 3rd, 2002 and the ninth on September 8th 2006. |
Environmental Conditions: | Water from the sample source (i.e., river) is pumped sequentially through a 0.45 micron glass-fiber particle filter, then through a column packed with XAD-2 resin beads, to which nonpolar compounds adsorb. Sampling rates are set to optimum volumes to ensure maximum extraction of target compounds from the sample water. Samples are pumped on a flow-proportioned basis to achieve the desired sample volumes over an approximately 30-day period. This requires predictions of total river discharges during the sampling period, which predictions are not always borne out, resulting in either longer sampling periods or higher or lower than the targeted sample volume. Higher sample volumes provide lower analytical detection limits. Both the particle filter and resin beads are extracted in the laboratory and the extracts are combined and analyzed to provide a total concentration of each compound in the extracted volume of water. |
QAPP Information: | CCLEAN has an approved QAPP |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 4684 |
LOE ID: | 1839 |
Pollutant: | Sedimentation/Siltation |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Not Recorded |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 0 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | |
Objective/Criterion Reference: | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | QA Info Missing |
QAPP Information Reference(s): |