|
LOE ID: |
13793 |
|
Pollutant: |
Fecal Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
41 |
Number of Exceedances: |
25 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed Central Coast Watershed Studies (R3_CCOWS) data for Harkins Slough to determine beneficial use support and results are as follows: 25 of 41 samples exceed the criterion for Coliform, Fecal. |
Data Reference: |
Final Data File used for assessment: CCoWS (Central Coast Watershed Studies) Water Quality Data |
|
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 Harkins Slough was collected at 7 monitoring sites [ Confluence with Watsonville Slough, ~10 m upstream of Ranport Rd crossing, Upstream of Highway 1, Buena Vista RD, Harkins Slough Rd, Drivway number 916 off Larken Valley Rd, Peaceful Oaks] |
Temporal Representation: |
Data was collected over the time period 2/18/2003-12/9/2003. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Data quality is good and Standard Operating Procedures are well documented in QAPP. However, data documentation is poor and replicate samples and other quality assurance measurements are not consistently documented in this data set. |
QAPP Information Reference(s): |
|
|
LOE ID: |
13657 |
|
Pollutant: |
Escherichia coli (E. Coli) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
41 |
Number of Exceedances: |
25 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed Central Coast Watershed Studies (R3_CCOWS) data for Harkins Slough to determine beneficial use support and results are as follows: 25 of 41 samples exceed the criterion for Escherichia coli. |
Data Reference: |
Final Data File used for assessment: CCoWS (Central Coast Watershed Studies) 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 Harkins Slough was collected at 7 monitoring sites [ Confluence with Watsonville Slough, Harkins Slough Rd, ~10 m upstream of Ranport Rd crossing, Upstream of Highway 1, Buena Vista RD, Peaceful Oaks, Drivway number 916 off Larken Valley Rd] |
Temporal Representation: |
Data was collected over the time period 2/18/2003-12/9/2003. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Data quality is good and Standard Operating Procedures are well documented in QAPP. However, data documentation is poor and replicate samples and other quality assurance measurements are not consistently documented in this data set. |
QAPP Information Reference(s): |
|
|
LOE ID: |
13794 |
|
Pollutant: |
Fecal Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
41 |
Number of Exceedances: |
8 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed Central Coast Watershed Studies (R3_CCOWS) data for Harkins Slough to determine beneficial use support and results are as follows: 8 of 41 samples exceed the criterion for Coliform, Fecal. |
Data Reference: |
Final Data File used for assessment: CCoWS (Central Coast Watershed Studies) 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. |
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 Harkins Slough was collected at 7 monitoring sites [ Confluence with Watsonville Slough, ~10 m upstream of Ranport Rd crossing, Upstream of Highway 1, Buena Vista RD, Harkins Slough Rd, Drivway number 916 off Larken Valley Rd, Peaceful Oaks] |
Temporal Representation: |
Data was collected over the time period 2/18/2003-12/9/2003. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Data quality is good and Standard Operating Procedures are well documented in QAPP. However, data documentation is poor and replicate samples and other quality assurance measurements are not consistently documented in this data set. |
QAPP Information Reference(s): |
|
|
LOE ID: |
13658 |
|
Pollutant: |
Escherichia coli (E. Coli) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
41 |
Number of Exceedances: |
4 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed Central Coast Watershed Studies (R3_CCOWS) data for Harkins Slough to determine beneficial use support and results are as follows: 4 of 41 samples exceed the criterion for Escherichia coli. |
Data Reference: |
Final Data File used for assessment: CCoWS (Central Coast Watershed Studies) 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 Harkins Slough was collected at 7 monitoring sites [ Confluence with Watsonville Slough, Harkins Slough Rd, ~10 m upstream of Ranport Rd crossing, Upstream of Highway 1, Buena Vista RD, Peaceful Oaks, Drivway number 916 off Larken Valley Rd] |
Temporal Representation: |
Data was collected over the time period 2/18/2003-12/9/2003. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Data quality is good and Standard Operating Procedures are well documented in QAPP. However, data documentation is poor and replicate samples and other quality assurance measurements are not consistently documented in this data set. |
QAPP Information Reference(s): |
|
|
LOE ID: |
18437 |
|
Pollutant: |
Escherichia coli (E. Coli) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
6 |
Number of Exceedances: |
3 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Harkins Slough to determine beneficial use support and results are as follows: 3 of 6 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 Harkins Slough was collected at 1 monitoring site [ 305-HARKI-21 - Harkins Slough at Harkins Slough Road] |
Temporal Representation: |
Data was collected over the time period 5/26/2004-11/8/2004. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. |
QAPP Information Reference(s): |
|
|
LOE ID: |
18436 |
|
Pollutant: |
Escherichia coli (E. Coli) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
6 |
Number of Exceedances: |
6 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Harkins Slough to determine beneficial use support and results are as follows: 6 of 6 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 Harkins Slough was collected at 1 monitoring site [ 305-HARKI-21 - Harkins Slough at Harkins Slough Road] |
Temporal Representation: |
Data was collected over the time period 5/26/2004-11/8/2004. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. |
QAPP Information Reference(s): |
|
|
LOE ID: |
18348 |
|
Pollutant: |
Escherichia coli (E. Coli) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
9 |
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 Harkins Slough to determine beneficial use support and results are as follows: 0 of 9 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 Harkins Slough was collected at 3 monitoring sites [ 305-HARKI-23 - Harkins Slough at Buena Vista Drive, 305-HARKI-22 - Harkins Slough at Pajaro Valley Water Management Assn. Pump Station, 305-HARKI-21 - Harkins Slough at Harkins Slough Road] |
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: |
18347 |
|
Pollutant: |
Escherichia coli (E. Coli) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
9 |
Number of Exceedances: |
4 |
|
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 Harkins Slough to determine beneficial use support and results are as follows: 4 of 9 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 Harkins Slough was collected at 3 monitoring sites [ 305-HARKI-23 - Harkins Slough at Buena Vista Drive, 305-HARKI-22 - Harkins Slough at Pajaro Valley Water Management Assn. Pump Station, 305-HARKI-21 - Harkins Slough at Harkins Slough Road] |
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: |
10333 |
|
Pollutant: |
Fecal Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
14 |
Number of Exceedances: |
10 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for Harkins Slough to determine beneficial use support and results are as follows: 10 of 14 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 Harkins Slough was collected at 1 monitoring site [ 305HAR-Harkins Slough at Harkins Slough Road] |
Temporal Representation: |
Data was collected over the time period 1/24/2005-3/16/2006. 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: |
10334 |
|
Pollutant: |
Fecal Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
14 |
Number of Exceedances: |
4 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for Harkins Slough to determine beneficial use support and results are as follows: 4 of 14 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 Harkins Slough was collected at 1 monitoring site [ 305HAR-Harkins Slough at Harkins Slough Road] |
Temporal Representation: |
Data was collected over the time period 1/24/2005-3/16/2006. 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: |
10336 |
|
Pollutant: |
Escherichia coli (E. Coli) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
14 |
Number of Exceedances: |
10 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for Harkins Slough to determine beneficial use support and results are as follows: 10 of 14 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 Harkins Slough was collected at 1 monitoring site [ 305HAR-Harkins Slough at Harkins Slough Road] |
Temporal Representation: |
Data was collected over the time period 1/24/2005-3/16/2006. 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: |
10337 |
|
Pollutant: |
Escherichia coli (E. Coli) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
14 |
Number of Exceedances: |
4 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for Harkins Slough to determine beneficial use support and results are as follows: 4 of 14 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 Harkins Slough was collected at 1 monitoring site [ 305HAR-Harkins Slough at Harkins Slough Road] |
Temporal Representation: |
Data was collected over the time period 1/24/2005-3/16/2006. 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): |
|
DECISION ID |
14397 |
|
Pollutant: |
pH |
Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: |
New Decision |
Revision Status |
Original |
Impairment from Pollutant or Pollution: |
Pollutant |
|
Weight of Evidence: |
This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Twelve lines of evidence are available in the administrative record to assess this pollutant. Six samples exceed the Warm Freshwater Habitat water quality objective and 4 samples exceed the numeric objectives for Non-Contact Recreation and Water Contact Recreation.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.
This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Six samples exceed the Warm Freshwater Habitat water quality objective and 4 samples exceed the numeric objectives for Non-Contact Recreation and Water Contact Recreation and these do not exceed the allowable frequency listed in Table 3.2 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
|
RWQCB Board Decision / Staff Recommendation: |
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
|
SWRCB Board Decision / Staff Recommendation: |
|
|
USEPA Decision: |
|
|
|
Lines of Evidence (LOEs) for Decision ID 14397 |
|
LOE ID: |
18908 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
12 |
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 Harkins Slough to determine beneficial use support and results are as follows: 1 of 12 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 Harkins Slough was collected at 3 monitoring sites [ 305-HARKI-23 - Harkins Slough at Buena Vista Drive, 305-HARKI-22 - Harkins Slough at Pajaro Valley Water Management Assn. Pump Station, 305-HARKI-21 - Harkins Slough at Harkins Slough Road] |
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: |
18907 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
12 |
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 Harkins Slough to determine beneficial use support and results are as follows: 1 of 12 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 Harkins Slough was collected at 3 monitoring sites [ 305-HARKI-23 - Harkins Slough at Buena Vista Drive, 305-HARKI-22 - Harkins Slough at Pajaro Valley Water Management Assn. Pump Station, 305-HARKI-21 - Harkins Slough at Harkins Slough Road] |
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: |
18906 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
12 |
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 Harkins Slough to determine beneficial use support and results are as follows: 1 of 12 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 Harkins Slough was collected at 3 monitoring sites [ 305-HARKI-23 - Harkins Slough at Buena Vista Drive, 305-HARKI-22 - Harkins Slough at Pajaro Valley Water Management Assn. Pump Station, 305-HARKI-21 - Harkins Slough at Harkins Slough Road] |
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: |
19136 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
21 |
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 (Clean streams project) (R3_CLNStrm) data for Harkins Slough to determine beneficial use support and results are as follows: 1 of 21 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 Harkins Slough was collected at 2 monitoring sites [ 305-HARKI-21 - Harkins Slough at Harkins Slough Road, 305-HARKI-22 - Harkins Slough at Pajaro Valley Water Management Assn. Pump Station] |
Temporal Representation: |
Data was collected over the time period 5/13/2004-11/12/2004. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. |
QAPP Information Reference(s): |
|
|
LOE ID: |
19153 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
21 |
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 (Clean streams project) (R3_CLNStrm) data for Harkins Slough to determine beneficial use support and results are as follows: 1 of 21 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 Harkins Slough was collected at 2 monitoring sites [ 305-HARKI-21 - Harkins Slough at Harkins Slough Road, 305-HARKI-22 - Harkins Slough at Pajaro Valley Water Management Assn. Pump Station] |
Temporal Representation: |
Data was collected over the time period 5/13/2004-11/12/2004. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. |
QAPP Information Reference(s): |
|
|
LOE ID: |
19135 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
21 |
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 (Clean streams project) (R3_CLNStrm) data for Harkins Slough to determine beneficial use support and results are as follows: 1 of 21 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 Harkins Slough was collected at 2 monitoring sites [ 305-HARKI-21 - Harkins Slough at Harkins Slough Road, 305-HARKI-22 - Harkins Slough at Pajaro Valley Water Management Assn. Pump Station] |
Temporal Representation: |
Data was collected over the time period 5/13/2004-11/12/2004. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. |
QAPP Information Reference(s): |
|
|
LOE ID: |
10355 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
14 |
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 Harkins Slough to determine beneficial use support and results are as follows: 3 of 14 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 Harkins Slough was collected at 1 monitoring site [ 305HAR-Harkins Slough at Harkins Slough Road] |
Temporal Representation: |
Data was collected over the time period 1/24/2005-3/16/2006. 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: |
10354 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
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 CCAMP Pajaro (Pajaro) data for Harkins Slough 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: 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 Harkins Slough was collected at 1 monitoring site [ 305HAR-Harkins Slough at Harkins Slough Road] |
Temporal Representation: |
Data was collected over the time period 1/24/2005-3/16/2006. 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: |
10353 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
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 CCAMP Pajaro (Pajaro) data for Harkins Slough 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: 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 Harkins Slough was collected at 1 monitoring site [ 305HAR-Harkins Slough at Harkins Slough Road] |
Temporal Representation: |
Data was collected over the time period 1/24/2005-3/16/2006. 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: |
13644 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
32 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed Central Coast Watershed Studies (R3_CCOWS) data for Harkins Slough to determine beneficial use support and results are as follows: 1 of 32 samples exceed the criterion for pH. |
Data Reference: |
Final Data File used for assessment: CCoWS (Central Coast Watershed Studies) Water Quality Data |
|
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 Harkins Slough was collected at 3 monitoring sites [ Confluence with Watsonville Slough, Harkins Slough Rd, ~10 m upstream of Ranport Rd crossing] |
Temporal Representation: |
Data was collected over the time period 2/18/2003-7/16/2003. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Data quality is good and Standard Operating Procedures are well documented in QAPP. However, data documentation is poor and replicate samples and other quality assurance measurements are not consistently documented in this data set. |
QAPP Information Reference(s): |
|
|
LOE ID: |
13643 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
32 |
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 Watershed Studies (R3_CCOWS) data for Harkins Slough to determine beneficial use support and results are as follows: 0 of 32 samples exceed the criterion for pH. |
Data Reference: |
Final Data File used for assessment: CCoWS (Central Coast Watershed Studies) 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: 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 Harkins Slough was collected at 3 monitoring sites [ Confluence with Watsonville Slough, Harkins Slough Rd, ~10 m upstream of Ranport Rd crossing] |
Temporal Representation: |
Data was collected over the time period 2/18/2003-7/16/2003. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Data quality is good and Standard Operating Procedures are well documented in QAPP. However, data documentation is poor and replicate samples and other quality assurance measurements are not consistently documented in this data set. |
QAPP Information Reference(s): |
|
|
LOE ID: |
13642 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
32 |
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 Watershed Studies (R3_CCOWS) data for Harkins Slough to determine beneficial use support and results are as follows: 0 of 32 samples exceed the criterion for pH. |
Data Reference: |
Final Data File used for assessment: CCoWS (Central Coast Watershed Studies) Water Quality Data |
|
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 Harkins Slough was collected at 3 monitoring sites [ Confluence with Watsonville Slough, Harkins Slough Rd, ~10 m upstream of Ranport Rd crossing] |
Temporal Representation: |
Data was collected over the time period 2/18/2003-7/16/2003. |
Environmental Conditions: |
Staff is not aware of any special conditions that might effect interpretation of the data. |
QAPP Information: |
Data quality is good and Standard Operating Procedures are well documented in QAPP. However, data documentation is poor and replicate samples and other quality assurance measurements are not consistently documented in this data set. |
QAPP Information Reference(s): |