|
LOE ID: |
14407 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
22 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceed the criterion for pH. |
Data Reference: |
Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
11680 |
|
Pollutant: |
pH |
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 Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 3 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 6/27/2000-9/6/2000. 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: |
11679 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
15 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 15 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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: |
11677 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
15 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 15 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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: |
11643 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Cold Freshwater Habitat |
Aquatic Life Use: |
Cold Freshwater Habitat |
|
Number of Samples: |
15 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 15 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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: |
11696 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
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 Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 3 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 6/27/2000-9/6/2000. 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: |
11644 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Municipal & Domestic Supply |
|
Number of Samples: |
15 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 15 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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: |
10712 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm 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 Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 3 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 6/27/2000-9/6/2000. 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: |
10711 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
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 Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 3 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 6/27/2000-9/6/2000. 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: |
14406 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
22 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceed the criterion for pH. |
Data Reference: |
Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
14393 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
22 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceed the criterion for pH. |
Data Reference: |
Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
14392 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Municipal & Domestic Supply |
|
Number of Samples: |
22 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceed the criterion for pH. |
Data Reference: |
Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
11678 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Non-Contact Recreation |
|
Number of Samples: |
15 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 15 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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: |
14391 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Cold Freshwater Habitat |
Aquatic Life Use: |
Cold Freshwater Habitat |
|
Number of Samples: |
22 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceed the criterion for pH. |
Data Reference: |
Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
11681 |
|
Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Municipal & Domestic 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 Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 3 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 6/27/2000-9/6/2000. 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): |
|
DECISION ID |
15056 |
|
Pollutant: |
Fecal Coliform |
Final Listing Decision: |
List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: |
New Decision |
Revision Status |
Revised |
Sources: |
Source Unknown |
Expected TMDL Completion Date: |
2013 |
Impairment from Pollutant or Pollution: |
Pollutant |
|
Weight of Evidence: |
This pollutant is being considered for placement on the section 303(d) list under sections 2.1 and 3.3 of the Listing Policy.
Two lines of evidence are available in the administrative record to assess this pollutant. Based on section 3.3 the site exceeded numeric objectives for conventional pollutants. According to the binomial distribution, waters shall be placed on the section 303(d) list if the number of measured exceedances supports rejection of the null hypothesis as presented in Table 3.2. Five of the 15 samples exceed the water quality objective for Water Contact Recreation. This supports rejection of the null hypothesis. One of 15 samples exceed the water quality objective for Non-Contact Recreation. This beneficial use does not have sufficient evidence showing that it is impaired.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of 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. Five of the 15 samples exceed the water quality objective for Water Contact Recreation and this exceeds 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 be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
|
SWRCB Board Decision / Staff Recommendation: |
|
|
USEPA Decision: |
|
|
|
Lines of Evidence (LOEs) for Decision ID 15056 |
|
LOE ID: |
11642 |
|
Pollutant: |
Fecal Coliform |
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 CCAMP Santa Maria (SantaMaria) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 1 of 15 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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: |
11641 |
|
Pollutant: |
Fecal Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
15 |
Number of Exceedances: |
5 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 5 of 15 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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): |
|
DECISION ID |
15089 |
|
Pollutant: |
Nitrate |
Final Listing Decision: |
List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: |
New Decision |
Revision Status |
Revised |
Sources: |
Agriculture | Groundwater Loadings |
Expected TMDL Completion Date: |
2013 |
Impairment from Pollutant or Pollution: |
Pollutant |
|
Weight of Evidence: |
This pollutant is being considered for placement on the section 303(d) list under sections 2.1 and 3.1 of the Listing Policy.
Seven lines of evidence are available in the administrative record to assess this pollutant. Based on section 3.1 the site exceeded numeric objectives for toxic pollutants. Using the binomial distribution, waters shall be placed on the section 303(d) list if the number of measured exceedances supports rejection of the null hypothesis as presented in Table 3.1.
Three LOEs are used to assess the Municipal and Domestic Supply Beneficial Use. All 22 samples exceed the water quality objective for Municipal and Domestic Supply. An additional 15 of 16 samples for Nitrate + Nitrite exceed the OEHHA Public Health Goal in Drinking Water (December 1997) as it applies to the Municipal and Domestic Supply beneficial use. Each of these supports rejection of the null hypothesis as presented in Table 3.1 of the Listing Policy.
Four LOEs used to assess the Cold and Warm Freshwater Habitat Beneficial Uses. All 22 of the samples exceeded the Evaluation Guideline for Nitrate established for aquatic life beneficial uses using the Numeric Nutrient Endpoint tool and this supports rejection of the null hypothesis as presented in Table 3.1 of the Listing Policy.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of 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. Twenty-two of 22 samples exceed the water quality objective for Municipal and Domestic Supply. An additional 15 of 16 samples for Nitrate + Nitrite exceed the OEHHA Public Health Goal in Drinking Water (December 1997) as it applies to the Municipal and Domestic Supply beneficial use. These exceed the allowable frequency calculated from the equation in Table 4.1 of the Listing Policy.
4.All 22 of the samples exceeded the Evaluation Guideline for Nitrate established for aquatic life beneficial uses using the Numeric Nutrient Endpoint tool and this exceed the allowable frequency calculated from the equation in Table 4.1 of the Listing Policy.
5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
|
RWQCB Board Decision / Staff Recommendation: |
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
|
SWRCB Board Decision / Staff Recommendation: |
|
|
USEPA Decision: |
|
|
|
Lines of Evidence (LOEs) for Decision ID 15089 |
|
LOE ID: |
9690 |
|
Pollutant: |
Nitrate |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Municipal & Domestic Supply |
|
Number of Samples: |
16 |
Number of Exceedances: |
16 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 16 of 16 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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: |
14305 |
|
Pollutant: |
Nitrate |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Municipal & Domestic Supply |
|
Number of Samples: |
6 |
Number of Exceedances: |
6 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 6 of 6 samples exceed the criterion for Nitrate as N. |
Data Reference: |
Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc 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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-11/29/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
15218 |
|
Pollutant: |
Nitrate/Nitrite (Nitrite + Nitrate as N) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Municipal & Domestic Supply |
|
Number of Samples: |
16 |
Number of Exceedances: |
15 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 15 of 16 samples exceed the criterion for Nitrate/Nitrite as N. |
Data Reference: |
Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
Water Quality Objective/Criterion: |
OEHHA public Health Goals for Nitrate and Nitrogen in Drinking Water (December 1997). Page 6. |
Objective/Criterion Reference: |
Public health goals for nitrate and nitrite in drinking water |
|
Evaluation Guideline: |
OEHHA Public Health Goal states that sum of the concentration of nitrate + nitrite shall not exceed 10 mg/L (NO3+NO2 expressed as N). |
Guideline Reference: |
Public health goals for nitrate and nitrite in drinking water |
|
Spatial Representation: |
Data for this line of evidence for Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 3/22/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
27866 |
|
Pollutant: |
Nitrate |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Cold Freshwater Habitat |
|
Number of Samples: |
6 |
Number of Exceedances: |
6 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Data for this assessment unit was collected by one monitoring project: CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) |
Data Reference: |
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 |
|
Evaluation Guideline: |
Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. |
Guideline Reference: |
Technical Approach to Develop Nutrient Numeric Endpoints for California |
|
Technical Paper - Interpreting Narrative Objectives for Biostimulatory Substances Using the Technical Approach for Developing California Nutrient Numeric Endpoints. Central Coast Region |
|
Spatial Representation: |
Data for this line of evidence for Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-11/29/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
27867 |
|
Pollutant: |
Nitrate |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
6 |
Number of Exceedances: |
6 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Data for this assessment unit was collected by one monitoring project: CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) |
Data Reference: |
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 |
|
Evaluation Guideline: |
Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. |
Guideline Reference: |
Technical Approach to Develop Nutrient Numeric Endpoints for California |
|
Technical Paper - Interpreting Narrative Objectives for Biostimulatory Substances Using the Technical Approach for Developing California Nutrient Numeric Endpoints. Central Coast Region |
|
Spatial Representation: |
Data for this line of evidence for Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-11/29/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
27868 |
|
Pollutant: |
Nitrate |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Cold Freshwater Habitat |
|
Number of Samples: |
16 |
Number of Exceedances: |
16 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Data for this assessment unit was collected by one monitoring project: CCAMP Santa Maria (SantaMaria) |
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 |
|
Evaluation Guideline: |
Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. |
Guideline Reference: |
Technical Approach to Develop Nutrient Numeric Endpoints for California |
|
Technical Paper - Interpreting Narrative Objectives for Biostimulatory Substances Using the Technical Approach for Developing California Nutrient Numeric Endpoints. Central Coast Region |
|
Spatial Representation: |
Data for this line of evidence for Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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: |
27869 |
|
Pollutant: |
Nitrate |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
16 |
Number of Exceedances: |
16 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Data for this assessment unit was collected by one monitoring project: CCAMP Santa Maria (SantaMaria) |
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 |
|
Evaluation Guideline: |
Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. |
Guideline Reference: |
Technical Approach to Develop Nutrient Numeric Endpoints for California |
|
Technical Paper - Interpreting Narrative Objectives for Biostimulatory Substances Using the Technical Approach for Developing California Nutrient Numeric Endpoints. Central Coast Region |
|
Spatial Representation: |
Data for this line of evidence for Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/3/2000-3/1/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of 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): |
|
DECISION ID |
15890 |
|
Pollutant: |
Unknown Toxicity |
Final Listing Decision: |
List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: |
New Decision |
Revision Status |
Revised |
Sources: |
Agriculture |
Expected TMDL Completion Date: |
2013 |
Impairment from Pollutant or Pollution: |
Pollutant |
|
Weight of Evidence: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 and section 3.6 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Six lines of evidence are available in the administrative record to assess this pollutant in water samples. Three of the samples were toxic to test organisms (exhibited a significant increase in mortality or decrease in cell density compared to the laboratory control) and therefore exceed the narrative General Objective for toxicity, set to protect for aquatic life beneficial uses.
The following is a summary of the results from individual toxicity tests. None of the 6 samples (tested for toxicity to plants), exceed the narrative General Objective for toxicity and 1 of the 5 samples (tested for toxicity to vertebrate test organisms), exceed the narrative General Objective for toxicity. However, 2 of the 7 samples (tested for toxicity to invertebrate test organisms), exceed the narrative General Objective for toxicity and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of 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. Two of the 7 samples (tested for toxicity to invertebrate test organisms), exceed the narrative General Objective for toxicity and this exceeds the allowable frequency listed in Table 3.1 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 be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
|
SWRCB Board Decision / Staff Recommendation: |
|
|
USEPA Decision: |
|
|
|
Lines of Evidence (LOEs) for Decision ID 15890 |
|
LOE ID: |
24132 |
|
Pollutant: |
Invertebrate Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
7 |
Number of Exceedances: |
2 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 2 of 7 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 7/26/2005-8/23/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
24158 |
|
Pollutant: |
Vertebrate Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Cold Freshwater Habitat |
Aquatic Life Use: |
Cold Freshwater Habitat |
|
Number of Samples: |
5 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 1 of 5 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
24167 |
|
Pollutant: |
Plant Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
6 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 6 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
24159 |
|
Pollutant: |
Vertebrate Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
5 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 1 of 5 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
24160 |
|
Pollutant: |
Plant Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Cold Freshwater Habitat |
Aquatic Life Use: |
Cold Freshwater Habitat |
|
Number of Samples: |
6 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 0 of 6 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected over the time period 2/21/2005-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
24131 |
|
Pollutant: |
Invertebrate Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Cold Freshwater Habitat |
Aquatic Life Use: |
Cold Freshwater Habitat |
|
Number of Samples: |
7 |
Number of Exceedances: |
2 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 2 of 7 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at Train Trussel]. |
Temporal Representation: |
Data was collected over the time period 7/26/2005-8/23/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
DECISION ID |
15889 |
|
Pollutant: |
Sediment Toxicity |
Final Listing Decision: |
List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: |
New Decision |
Revision Status |
Original |
Sources: |
Agriculture |
Expected TMDL Completion Date: |
2013 |
Impairment from Pollutant or Pollution: |
Pollutant |
|
Weight of Evidence: |
This pollutant is being considered for placement on the section 303(d) list under section 3.6 of the Listing Policy. Under section 3.6 a single line of evidence is necessary to assess listing status for toxicity.
Four lines of evidence are available in the administrative record to assess this pollutant in sediment samples. Both of the 2 samples were toxic to invertebrate test organisms (exhibited a significant increase in mortality compared to the laboratory control) and therefore exceed the narrative General Objective for toxicity, set to protect for aquatic life beneficial uses.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of 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. Both of the 2 samples were toxic to invertebrate test organisms and this exceeds the allowable frequency listed in Table 3.1 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 be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
|
SWRCB Board Decision / Staff Recommendation: |
|
|
USEPA Decision: |
|
|
|
Lines of Evidence (LOEs) for Decision ID 15889 |
|
LOE ID: |
24149 |
|
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: |
1 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 1 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected on a single day 5/15/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
23696 |
|
Pollutant: |
Invertebrate Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Sediment |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Toxicity, Hyalella azteca 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected on a single day 4/19/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
|
|
LOE ID: |
24151 |
|
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: |
1 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Toxicity, Hyalella azteca 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected on a single day 4/19/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |
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|
LOE ID: |
24150 |
|
Pollutant: |
Invertebrate Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Sediment |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Little Oso Flaco Creek to determine beneficial use support and results are as follows: 1 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: Central Coast Water Quality Preservation Inc toxicity data
|
|
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data
|
|
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 Little Oso Flaco Creek was collected at 1 monitoring site [ 312OFN-Little Oso Flaco Creek at train Trussel] |
Temporal Representation: |
Data was collected on a single day 5/15/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (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 Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. |
QAPP Information Reference(s): |