Line of Evidence (LOE) for Decision ID 137808, Lead
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
262726 |
|
Pollutant: |
Lead |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Lead. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.5 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137808, Lead
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
4252 |
|
Pollutant: |
Lead |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Not Recorded |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
0 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
Not Specified |
Data Used to Assess Water Quality: |
Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: |
Placeholder reference pre-2006 303(d) |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
Unspecified |
Objective/Criterion Reference: |
Placeholder reference pre-2006 303(d) |
|
Evaluation Guideline: |
Unspecified |
Guideline Reference: |
Placeholder reference pre-2006 303(d) |
|
Spatial Representation: |
Unspecified |
Temporal Representation: |
Unspecified |
Environmental Conditions: |
Unspecified |
QAPP Information: |
Unspecified |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 137808, Lead
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
262578 |
|
Pollutant: |
Lead |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Lead. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.5 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137808, Lead
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
249060 |
|
Pollutant: |
Lead |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Lead . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for lead is the probable effect concentration (PEC) of 128 mg/kg dry weight (MacDonald et al., 2000a). |
Guideline Reference: |
Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Pollutant: |
Benthic Community Effects |
Final Listing Decision: |
Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: |
List on 303(d) list (TMDL required list)(2018) |
Revision Status |
Revised |
Sources: |
A Source Unknown |
TMDL Name: |
Malibu Lagoon Benthic Comm. Effects (71) |
TMDL Project Code: |
409 |
Date TMDL Approved by USEPA: |
07/02/2013 |
Impairment from Pollutant or Pollution: |
Pollutant |
|
Regional Board Conclusion: |
This pollutant is being considered for removal from the section 303(d) list under sections 2.2 and 4.9 of the Listing Policy. Under section 4.9, waters are listed when a bioassessment shows diminished numbers of species or other metrics (compared to a reference site) and this condition is associated with another pollutant.
Two lines of evidence (LOEs) are available in the administrative record to assess this pollutant. LOE 30527 is based on benthic macroinvertebrates as measured by Southern California IBI (Index of Biological Integrity). Scores were very poor in the spring and fall of 2005, indicating an impairment of benthic community structure. LOE 305239, based on the California Stream Condition Index (CSCI), has a score below the threshold of 0.79.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. 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. IBI and CSCI scores indicate benthic community impairment, and the waterbody is also impaired for lead, mercury, and sedimentation. 4. The Malibu Creek & Lagoon TMDL for Sedimentation and Nutrients to Address Benthic Community Impairments was approved by USEPA on 7/2/2013. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
The water quality chemistry and bioassessment data provide a substantial basis that benthic macroinvertebrate populations are impacted by a wide range of anthropogenic stressors. Based on the available data and information, staff recommend to list for benthic macroinvertebrate-bioassessment. |
|
Regional Board Decision Recommendation: |
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
|
State Board Review of Regional Board Conclusion and Recommendation: |
The water quality chemistry and bioassessment data provide a substantial basis that benthic macroinvertebrate populations are impacted by a wide range of anthropogenic stressors. Based on the available data and information, staff recommend to list for benthic macroinvertebrate-bioassessment. |
|
State Board Decision Recommendation: |
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|
Line of Evidence (LOE) for Decision ID 151607, Benthic Community Effects
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
4253 |
|
Pollutant: |
Mercury |
LOE Subgroup: |
Pollutant-Tissue |
Matrix: |
Tissue |
Fraction: |
Not Recorded |
|
Beneficial Use: |
Commercial or recreational collection of fish, shellfish, or organisms |
|
Number of Samples: |
0 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
Not Specified |
Data Used to Assess Water Quality: |
Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: |
Placeholder reference pre-2006 303(d) |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
Unspecified |
Objective/Criterion Reference: |
Placeholder reference pre-2006 303(d) |
|
Evaluation Guideline: |
Unspecified |
Guideline Reference: |
Placeholder reference pre-2006 303(d) |
|
Spatial Representation: |
Unspecified |
Temporal Representation: |
Unspecified |
Environmental Conditions: |
Unspecified |
QAPP Information: |
Unspecified |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 151607, Benthic Community Effects
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
4252 |
|
Pollutant: |
Lead |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Not Recorded |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
0 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
Not Specified |
Data Used to Assess Water Quality: |
Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: |
Placeholder reference pre-2006 303(d) |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
Unspecified |
Objective/Criterion Reference: |
Placeholder reference pre-2006 303(d) |
|
Evaluation Guideline: |
Unspecified |
Guideline Reference: |
Placeholder reference pre-2006 303(d) |
|
Spatial Representation: |
Unspecified |
Temporal Representation: |
Unspecified |
Environmental Conditions: |
Unspecified |
QAPP Information: |
Unspecified |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 151607, Benthic Community Effects
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
305239 |
|
Pollutant: |
Benthic-Macroinvertebrate Bioassessments |
LOE Subgroup: |
Population/Community Degradation |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
Benthic macroinvertebrate surveys |
Data Used to Assess Water Quality: |
Water Board staff assessed data for 404S18250 to determine beneficial use support and the results are as follows: 1 of 1 samples exceeded the threshold. CSCI scores were from 0.496034325 to 0.496034325. |
Data Reference: |
California Stream Condition Index (CSCI) Scores for the 2024 Integrated Report for Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are lethal to or that produce significant alterations in population or community ecology or receiving water biota. In addition, the health and life history characteristics of aquatic organisms in waters affected by controllable water quality factors shall not differ significantly from those for the same waters in areas unaffected by controllable water quality factors. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The California Stream Condition Index (CSCI) is a biological scoring tool that helps aquatic resource managers translate complex data about benthic macroinvertebrates found living in a stream into an overall measure of stream health. The CSCI score is calculated by comparing the expected condition with actual (observed) results (Rehn, A.C. et al., 2015). CSCI scores range from 0 (highly degraded) to greater than 1 (equivalent to reference). CSCI scoring of biological condition are as follows (per the scientific paper supporting the development of the CSCI scoring tool): greater than or equal to 0.92 = likely intact condition, 0.91 to 0.80 = possibly altered condition, 0.79 to 0.63 = likely altered condition, less than or equal to 0.62 = very likely altered condition. Sites with scores below 0.79 are considered to have exceeded the water quality objective for the aquatic life beneficial use. |
Guideline Reference: |
Bioassessment in complex environments: designing an
index for consistent meaning in different settings
|
|
Spatial Representation: |
Samples were collected from station 404S18250. |
Temporal Representation: |
Samples were collected from 6/5/2013 to 6/5/2013. |
Environmental Conditions: |
|
QAPP Information: |
Data were collected using Surface Water Ambient Monitoring Program protocols |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 151607, Benthic Community Effects
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
30527 |
|
Pollutant: |
Benthic-Macroinvertebrate Bioassessments |
LOE Subgroup: |
Population/Community Degradation |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Wildlife Habitat |
|
Number of Samples: |
0 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
Benthic macroinvertebrate surveys |
Data Used to Assess Water Quality: |
The IBI scores at this site ranked in the ¿very poor¿ range (13) in the spring and ¿very poor¿ (3) in the fall. |
Data Reference: |
Malibu Watershed 2005 Bioassessment Monitoring Report. (2005) The Malibu Creek Watershed Monitoring Program City of Calabasas, Environmental Services Division. Submitted by: Aquatic Bioassay and Consulting Laboratories. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The Basin Plan states that: "All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant or animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analysis of species diversity, population density, growth anomalies, bioassays of appropriate duration or other appropriate methods as specified by the State or Regional Board.¿ |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The IBI is a multi-metric assessment that employs biological metrics that respond to a habitat or water quality impairment. Each of the biological metrics measured at a site are converted to an IBI score then summed. These cumulative scores are then ranked as very good (80-100), good (60-79), fair (40-49), poor (20-39) and very poor (0-19) habitat conditions. Sites with scores below 39 are considered to have impaired conditions. |
Guideline Reference: |
A Quantitative Tool for Assessing the Integrity of Southern Coastal California Streams. Appendix 7-B Environmental Management Vol. 35, No. 4, pp. 493-504. |
|
Spatial Representation: |
One site in Triunfo Creek was sampled, below Westlake at 34° 07.927' N 118° 49.237' W |
Temporal Representation: |
Sites were sampled in Spring and Fall of 2005 |
Environmental Conditions: |
Benthic macroinvertebrate populations and IBI scores may also be affected by a wide range of anthropogenic stressors. |
QAPP Information: |
Data was collected in compliance with California Stream Bioassessment Procedure. |
QAPP Information Reference(s): |
California Stream Bioassessment Procedure (Protocol Brief for Biological and Physical/Habitat Assessment in Wadeable Streams) California Department of Fish and Game Water Pollution Control Laboratory Aquatic Bioassessment Laboratory Revision Date - December, 2003 |
|
Line of Evidence (LOE) for Decision ID 151607, Benthic Community Effects
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
4254 |
|
Pollutant: |
Sedimentation/Siltation |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Not Recorded |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
0 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
Not Specified |
Data Used to Assess Water Quality: |
Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: |
Placeholder reference pre-2006 303(d) |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
Unspecified |
Objective/Criterion Reference: |
Placeholder reference pre-2006 303(d) |
|
Evaluation Guideline: |
Unspecified |
Guideline Reference: |
Placeholder reference pre-2006 303(d) |
|
Spatial Representation: |
Unspecified |
Temporal Representation: |
Unspecified |
Environmental Conditions: |
Unspecified |
QAPP Information: |
Unspecified |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 137822, Alkalinity as CaCO3
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
256697 |
|
Pollutant: |
Alkalinity as CaCO3 |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). |
Guideline Reference: |
National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137822, Alkalinity as CaCO3
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
256578 |
|
Pollutant: |
Alkalinity as CaCO3 |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). |
Guideline Reference: |
National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137822, Alkalinity as CaCO3
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
256575 |
|
Pollutant: |
Alkalinity as CaCO3 |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). |
Guideline Reference: |
National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137822, Alkalinity as CaCO3
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
256754 |
|
Pollutant: |
Alkalinity as CaCO3 |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). |
Guideline Reference: |
National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 153892, Aluminum
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
314706 |
|
Pollutant: |
Aluminum |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aluminum. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. |
Guideline Reference: |
Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 153892, Aluminum
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
314754 |
|
Pollutant: |
Aluminum |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aluminum. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. |
Guideline Reference: |
Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 153892, Aluminum
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
314726 |
|
Pollutant: |
Aluminum |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aluminum. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. |
Guideline Reference: |
Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 153892, Aluminum
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
314834 |
|
Pollutant: |
Aluminum |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aluminum. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. |
Guideline Reference: |
Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 150482, Ammonia
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
257075 |
|
Pollutant: |
Nitrogen, ammonia (Total Ammonia) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Ammonia as N. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listing in the Los Angeles Region Basin Plan for the 30-day Average Objective for Ammonia-N for Freshwaters Applicable to Waters Subject to the “Early Life Absent” Condition. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 150482, Ammonia
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
257196 |
|
Pollutant: |
Nitrogen, ammonia (Total Ammonia) |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Ammonia as N. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listing in the Los Angeles Region Basin Plan for the 30-day Average Objective for Ammonia-N for Freshwaters Applicable to Waters Subject to the “Early Life Absent” Condition. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137804, Arsenic
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
245919 |
|
Pollutant: |
Arsenic |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Arsenic . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for arsenic is the probable effect concentration (PEC) of 33 mg/kg dry weight (MacDonald et al., 2000a). |
Guideline Reference: |
Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137804, Arsenic
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
244420 |
|
Pollutant: |
Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Sediment |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
0 of the 1 samples collected by RWB4 So. CA Stormwater Monitoring Coalition for Triunfo Canyon Creek Reach 2 exhibited toxicity. A sample may have multiple toxicity test results, but will only be counted once. A sample is defined as being collected on the same day and the same location. The following organisms and parameters were utilized for the toxicity tests: Hyalella azteca for Growth (wt/surv indiv), Hyalella azteca for Survival. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The sample is toxic when the response of the organisms exposed to the sample is significantly different (worse) than the response of the organisms exposed to the laboratory control based on statistical hypothesis testing. An exceedance is counted when the significant effect code is “Significant; Less Similarity,” which means that the sample result is significantly different than the control result, and the percent effect is greater than the evaluation threshold. The default evaluation threshold is 20% unless otherwise stated. |
Guideline Reference: |
Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 |
|
Spatial Representation: |
The samples were collected at monitoring site: 404S44532 ( Potero Valley Creek (44532) ). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04. |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137804, Arsenic
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
257496 |
|
Pollutant: |
Arsenic |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Arsenic. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 150 ug/L. The conversion factor used to convert the total fraction criterion for arsenic to dissolved fraction criterion is 1. Therefore all data was considered to be representative of the dissolved fraction. (California Toxics Rule, 2000) |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137804, Arsenic
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
257556 |
|
Pollutant: |
Arsenic |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Arsenic. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 150 ug/L. The conversion factor used to convert the total fraction criterion for arsenic to dissolved fraction criterion is 1. Therefore all data was considered to be representative of the dissolved fraction. (California Toxics Rule, 2000) |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137820, Bifenthrin
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
246007 |
|
Pollutant: |
Bifenthrin |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Bifenthrin . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for bifenthrin is the median lethal concentration (LC50) of 0.43 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.43 ug/g is the geometric mean of LC50 values for bifenthrin (Amweg et al., 2005 and Amweg and Weston, 2007). |
Guideline Reference: |
Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 |
Guideline Reference: |
Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137805, Cadmium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
245953 |
|
Pollutant: |
Cadmium |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cadmium . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for cadmium is the probable effect concentration (PEC) of 4.98 mg/kg dry weight (MacDonald et al., 2000a). |
Guideline Reference: |
Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137805, Cadmium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
244420 |
|
Pollutant: |
Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Sediment |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
0 of the 1 samples collected by RWB4 So. CA Stormwater Monitoring Coalition for Triunfo Canyon Creek Reach 2 exhibited toxicity. A sample may have multiple toxicity test results, but will only be counted once. A sample is defined as being collected on the same day and the same location. The following organisms and parameters were utilized for the toxicity tests: Hyalella azteca for Growth (wt/surv indiv), Hyalella azteca for Survival. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The sample is toxic when the response of the organisms exposed to the sample is significantly different (worse) than the response of the organisms exposed to the laboratory control based on statistical hypothesis testing. An exceedance is counted when the significant effect code is “Significant; Less Similarity,” which means that the sample result is significantly different than the control result, and the percent effect is greater than the evaluation threshold. The default evaluation threshold is 20% unless otherwise stated. |
Guideline Reference: |
Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 |
|
Spatial Representation: |
The samples were collected at monitoring site: 404S44532 ( Potero Valley Creek (44532) ). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04. |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137805, Cadmium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
257991 |
|
Pollutant: |
Cadmium |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Cadmium. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.2 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137805, Cadmium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
258138 |
|
Pollutant: |
Cadmium |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Cadmium. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.2 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137806, Chloride
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
244060 |
|
Pollutant: |
Chloride |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed data from the Southern California Stormwater Monitoring Coalition to determine beneficial use support. The results are as follows: zero out of one samples exceed the criterion for chloride. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region lists a site specific objective for Chloride in Triunfo Canyon Creek Reach 2 of 500 of mg/L |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Station 404S18250 (34.132222, -118.82051), located in Triunfo Canyon Creek Reach 2. |
Temporal Representation: |
Water samples were taken on 6/5/2011 for the Southern California Stormwater Monitoring Coalition. |
Environmental Conditions: |
|
QAPP Information: |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137806, Chloride
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
244196 |
|
Pollutant: |
Chloride |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed data from the Southern California Stormwater Monitoring Coalition to determine beneficial use support. The results are as follows: zero out of one samples exceed the criterion for chloride. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region lists a site specific objective for Chloride in Triunfo Canyon Creek Reach 2 of 500 of mg/L |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Station 404S44532 (34.126825, -118.796174), located in Triunfo Canyon Creek Reach 2. |
Temporal Representation: |
Water samples were taken on 6/4/2012 for the Southern California Stormwater Monitoring Coalition. |
Environmental Conditions: |
|
QAPP Information: |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137826, Chromium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
258738 |
|
Pollutant: |
Chromium |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chromium. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is is hardness dependent as described in Table 1 of paragraph (b)(1). The value calculated when using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137826, Chromium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
246680 |
|
Pollutant: |
Chromium |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the evaluation guideline for Chromium . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for chromium is the probable effect concentration (PEC) of 111 mg/kg dry weight (MacDonald et al., 2000a). |
Guideline Reference: |
Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137826, Chromium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
258542 |
|
Pollutant: |
Chromium |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chromium. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is is hardness dependent as described in Table 1 of paragraph (b)(1). The value calculated when using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137807, Copper
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
258993 |
|
Pollutant: |
Copper |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Copper. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 9 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137807, Copper
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
247547 |
|
Pollutant: |
Copper |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Copper . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for copper is the probable effect concentration (PEC) of 149 mg/kg dry weight (MacDonald et al., 2000a). |
Guideline Reference: |
Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137807, Copper
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
244420 |
|
Pollutant: |
Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Sediment |
Fraction: |
None |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
0 of the 1 samples collected by RWB4 So. CA Stormwater Monitoring Coalition for Triunfo Canyon Creek Reach 2 exhibited toxicity. A sample may have multiple toxicity test results, but will only be counted once. A sample is defined as being collected on the same day and the same location. The following organisms and parameters were utilized for the toxicity tests: Hyalella azteca for Growth (wt/surv indiv), Hyalella azteca for Survival. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The sample is toxic when the response of the organisms exposed to the sample is significantly different (worse) than the response of the organisms exposed to the laboratory control based on statistical hypothesis testing. An exceedance is counted when the significant effect code is “Significant; Less Similarity,” which means that the sample result is significantly different than the control result, and the percent effect is greater than the evaluation threshold. The default evaluation threshold is 20% unless otherwise stated. |
Guideline Reference: |
Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 |
|
Spatial Representation: |
The samples were collected at monitoring site: 404S44532 ( Potero Valley Creek (44532) ). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04. |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137807, Copper
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
258898 |
|
Pollutant: |
Copper |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Copper. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 9 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137823, Cyfluthrin
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
247510 |
|
Pollutant: |
Cyfluthrin |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cyfluthrin, total . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for cyfluthrin is the median lethal concentration (LC50) of 1.1 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.1 ug/g is the geometric mean of LC50 values for cyfluthrin (Amweg et al., 2005). |
Guideline Reference: |
Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137825, Cyhalothrin, Lambda
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
247669 |
|
Pollutant: |
Cyhalothrin, Lambda |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cyhalothrin, Total lambda- . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for lambda-cyhalothrin is the median lethal concentration (LC50) of 0.44 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.44 ug/g is the geometric mean of LC50 values for lambda-cyhalothrin (Amweg et al., 2005). |
Guideline Reference: |
Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137821, Cypermethrin
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
247945 |
|
Pollutant: |
Cypermethrin |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cypermethrin, Total . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for cypermethrin is the median lethal concentration (LC50) of 0.3 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.3 ug/g is the geometric mean of LC50 values for cypermethrin from Maund et al., (2002). |
Guideline Reference: |
Partitioning, bioavailability, and toxicity of the pyrethroid insecticide cypermethrin in sediments. Environmental Toxicology and Chemistry 21:9-15 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137824, Deltamethrin
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
247775 |
|
Pollutant: |
Deltamethrin |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Deltamethrin . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for deltamethrin is the median lethal concentration (LC50) of 0.79 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.79 ug/g is the geometric mean of LC50 values for deltamethrin (Amweg et al., 2005). |
Guideline Reference: |
Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137828, Esfenvalerate/Fenvalerate
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
248708 |
|
Pollutant: |
Esfenvalerate/Fenvalerate |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Esfenvalerate/Fenvalerate, Total . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for esfenvalerate/fenvalerate is the median lethal concentration (LC50) of 1.5 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.5 ug/g is the geometric mean of LC50 values for esfenvalerate/fenvalerate (Amweg et al., 2005). |
Guideline Reference: |
Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 149985, Microcystins
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
263695 |
|
Pollutant: |
Microcystins |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Microcystins, Total. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 6 ug/L of microcystins as the water concentration protective of swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing. |
Guideline Reference: |
Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 149985, Microcystins
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
263676 |
|
Pollutant: |
Microcystins |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Wildlife Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Microcystins, Total. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
California Office of Environmental Health Hazard Assessment (OEHHA) established 2 ug/L of microcystins as the subchronic water concentration for dog intake/ingestion (Office of Environmental Health Hazard Assessment Public Health Action Level for microcystin and Human Recreational Uses (May 2012)). OEHHA Action Level for subchronic water intake, dog. |
Guideline Reference: |
Toxicological Summary and Suggested Action Levels to Reduce Potential Adverse Health Effects of Six Cyanotoxins |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 149985, Microcystins
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
263473 |
|
Pollutant: |
Microcystins |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Wildlife Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Microcystins, Total. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
California Office of Environmental Health Hazard Assessment (OEHHA) established 2 ug/L of microcystins as the subchronic water concentration for dog intake/ingestion (Office of Environmental Health Hazard Assessment Public Health Action Level for microcystin and Human Recreational Uses (May 2012)). OEHHA Action Level for subchronic water intake, dog. |
Guideline Reference: |
Toxicological Summary and Suggested Action Levels to Reduce Potential Adverse Health Effects of Six Cyanotoxins |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 149985, Microcystins
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
263677 |
|
Pollutant: |
Microcystins |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Microcystins, Total. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region states that: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 6 ug/L of microcystins as the water concentration protective of swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing. |
Guideline Reference: |
Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters. |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137809, Nickel
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
264117 |
|
Pollutant: |
Nickel |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nickel. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 52 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137809, Nickel
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
263897 |
|
Pollutant: |
Nickel |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nickel. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 52 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137809, Nickel
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
250031 |
|
Pollutant: |
Nickel |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the evaluation guideline for Nickel . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for nickel is the probable effect concentration (PEC) of 48.6 mg/kg dry weight (MacDonald et al., 2000a). |
Guideline Reference: |
Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 149986, Nitrogen, Nitrate
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
302272 |
|
Pollutant: |
Nitrogen, Nitrate |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nitrate as N. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N). |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 149986, Nitrogen, Nitrate
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
302409 |
|
Pollutant: |
Nitrogen, Nitrate |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nitrate as N. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N). |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 151906, Oxygen, Dissolved
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
308453 |
|
Pollutant: |
Oxygen, Dissolved |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Oxygen, Dissolved. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region (page 3-39) states that: The dissolved oxygen content of all surface waters designated as WARM shall not be depressed below 5 mg/L as a result of waste discharges. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 151906, Oxygen, Dissolved
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
308024 |
|
Pollutant: |
Oxygen, Dissolved |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Oxygen, Dissolved. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region (page 3-39) states that: The dissolved oxygen content of all surface waters designated as WARM shall not be depressed below 5 mg/L as a result of waste discharges. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137829, Permethrin
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
250602 |
|
Pollutant: |
Permethrin |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Permethrin, Total . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for permethrin is the median lethal concentration (LC50) of 8.9 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 8.9 ug/g is the geometric mean of LC50 values for permethrin (Amweg et al., 2005). |
Guideline Reference: |
Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137819, Pyrethroids
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
250984 |
|
Pollutant: |
Pyrethroids |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Pyrethroids . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
The evaluation guideline for the protection of aquatic life from pyrethroids is one toxic unit. Individual pyrethroid concentrations in sediment were normalized to organic carbon content, divided by the respective LC50 and then summed. A sum over over one toxic unit is an exceedance of the evaluation guideline (Amweg et al. 2006). |
Guideline Reference: |
Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 |
Guideline Reference: |
Partitioning, bioavailability, and toxicity of the pyrethroid insecticide cypermethrin in sediments. Environmental Toxicology and Chemistry 21:9-15 |
Guideline Reference: |
Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83¿92. |
Guideline Reference: |
Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. |
Guideline Reference: |
Compilation of freshwater OC-normalized sediment toxicity data for pyrethroids |
Guideline Reference: |
Pyrethroid insecticides and sediment toxicity in urban creeks from California and Tennessee. Environmental Science and Technology, 40(5): 1700-1706 |
|
Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137811, Selenium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
265920 |
|
Pollutant: |
Selenium |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Selenium. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137811, Selenium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
266253 |
|
Pollutant: |
Selenium |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Selenium. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137811, Selenium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
266311 |
|
Pollutant: |
Selenium |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Selenium. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137811, Selenium
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
266354 |
|
Pollutant: |
Selenium |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Selenium. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137812, Silver
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
266539 |
|
Pollutant: |
Silver |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Silver. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in freshwater is hardnesss dependent. The criterion when calculated using a default hardness of 100 mg/L is 3.4 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule, 2000. |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137812, Silver
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
266656 |
|
Pollutant: |
Silver |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Silver. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in freshwater is hardnesss dependent. The criterion when calculated using a default hardness of 100 mg/L is 3.4 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule, 2000. |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137813, Sulfates
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
244061 |
|
Pollutant: |
Sulfates |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed data from the Southern California Stormwater Monitoring Coalition to determine beneficial use support. The results are as follows: one out of one samples exceed the criterion for Sulfates. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region lists a site specific objective for Sulfates in Triunfo Canyon Creek Reach 2 of 500 mg/L |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Station 404S18250 (34.132222, -118.82051), located in Triunfo Canyon Creek Reach 2. |
Temporal Representation: |
Water samples were taken on 6/5/2011 for the Southern California Stormwater Monitoring Coalition. |
Environmental Conditions: |
|
QAPP Information: |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137813, Sulfates
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
244195 |
|
Pollutant: |
Sulfates |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed data from the Southern California Stormwater Monitoring Coalition to determine beneficial use support. The results are as follows: one out of one samples exceed the criterion for Sulfates. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region lists a site specific objective for Sulfates in Triunfo Canyon Creek Reach 2 of 500 mg/L |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Station 404S44532 (34.126825, -118.796174), located in Triunfo Canyon Creek Reach 2. |
Temporal Representation: |
Water samples were taken on 6/4/2012 for the Southern California Stormwater Monitoring Coalition. |
Environmental Conditions: |
|
QAPP Information: |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137814, Temperature, water
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
267180 |
|
Pollutant: |
Temperature, water |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Not Recorded |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Temperature. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
|
Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region (page 3-45) states that: For waters designated WARM, water temperature shall not be altered by more than 5 °F above the natural temperature. At no time shall these WARM-designated waters be raised above 80 °F as a result of waste discharges. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|
Line of Evidence (LOE) for Decision ID 137814, Temperature, water
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
|
|
LOE ID: |
267079 |
|
Pollutant: |
Temperature, water |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Not Recorded |
|
Beneficial Use: |
Warm Freshwater Habitat |
|
Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Temperature. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
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SWAMP Data: |
SWAMP |
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Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region (page 3-45) states that: For waters designated WARM, water temperature shall not be altered by more than 5 °F above the natural temperature. At no time shall these WARM-designated waters be raised above 80 °F as a result of waste discharges. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
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Evaluation Guideline: |
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Guideline Reference: |
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Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
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QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
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Line of Evidence (LOE) for Decision ID 137815, Total Dissolved Solids
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Region 4 |
Triunfo Canyon Creek Reach 2 |
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LOE ID: |
244071 |
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Pollutant: |
Total Dissolved Solids |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
1 |
Number of Exceedances: |
0 |
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Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed data from the Southern California Stormwater Monitoring Coalition to determine beneficial use support. The results are as follows: zero out of one samples exceed the criterion for Total Dissolved Solids. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
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SWAMP Data: |
Non-SWAMP |
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Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region lists a site specific objective for Total Dissolved Solids in Triunfo Canyon Creek Reach 2 of 2000 mg/L |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
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Evaluation Guideline: |
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Guideline Reference: |
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Spatial Representation: |
Station 404S18250 (34.132222, -118.82051), located in Triunfo Canyon Creek Reach 2. |
Temporal Representation: |
Water samples were taken on 6/5/2011 for the Southern California Stormwater Monitoring Coalition. |
Environmental Conditions: |
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QAPP Information: |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
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Line of Evidence (LOE) for Decision ID 137815, Total Dissolved Solids
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Region 4 |
Triunfo Canyon Creek Reach 2 |
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LOE ID: |
244197 |
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Pollutant: |
Total Dissolved Solids |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
1 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed data from the Southern California Stormwater Monitoring Coalition to determine beneficial use support. The results are as follows: zero out of one samples exceed the criterion for Total Dissolved Solids. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
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SWAMP Data: |
Non-SWAMP |
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Water Quality Objective/Criterion: |
The Water Quality Control Plan for the Los Angeles Region lists a site specific objective for Total Dissolved Solids in Triunfo Canyon Creek Reach 2 of 2000 mg/L |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
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Evaluation Guideline: |
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Guideline Reference: |
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Spatial Representation: |
Station 404S44532 (34.126825, -118.796174), located in Triunfo Canyon Creek Reach 2. |
Temporal Representation: |
Water samples were taken on 6/4/2012 for the Southern California Stormwater Monitoring Coalition. |
Environmental Conditions: |
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QAPP Information: |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
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Line of Evidence (LOE) for Decision ID 137816, Toxicity
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Region 4 |
Triunfo Canyon Creek Reach 2 |
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LOE ID: |
244420 |
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Pollutant: |
Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Sediment |
Fraction: |
None |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
1 |
Number of Exceedances: |
0 |
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Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
0 of the 1 samples collected by RWB4 So. CA Stormwater Monitoring Coalition for Triunfo Canyon Creek Reach 2 exhibited toxicity. A sample may have multiple toxicity test results, but will only be counted once. A sample is defined as being collected on the same day and the same location. The following organisms and parameters were utilized for the toxicity tests: Hyalella azteca for Growth (wt/surv indiv), Hyalella azteca for Survival. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
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SWAMP Data: |
SWAMP |
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Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
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Evaluation Guideline: |
The sample is toxic when the response of the organisms exposed to the sample is significantly different (worse) than the response of the organisms exposed to the laboratory control based on statistical hypothesis testing. An exceedance is counted when the significant effect code is “Significant; Less Similarity,” which means that the sample result is significantly different than the control result, and the percent effect is greater than the evaluation threshold. The default evaluation threshold is 20% unless otherwise stated. |
Guideline Reference: |
Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 |
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Spatial Representation: |
The samples were collected at monitoring site: 404S44532 ( Potero Valley Creek (44532) ). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04. |
Environmental Conditions: |
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QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
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Line of Evidence (LOE) for Decision ID 137816, Toxicity
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Region 4 |
Triunfo Canyon Creek Reach 2 |
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LOE ID: |
244408 |
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Pollutant: |
Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
None |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
1 |
Number of Exceedances: |
1 |
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Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
1 of the 1 samples collected by RWB4 So. CA Stormwater Monitoring Coalition for Triunfo Canyon Creek Reach 2 exhibited toxicity. A sample may have multiple toxicity test results, but will only be counted once. A sample is defined as being collected on the same day and the same location. The following organisms and parameters were utilized for the toxicity tests: Ceriodaphnia dubia for Survival, Ceriodaphnia dubia for Young/female. The following tests exhibited toxicity: Ceriodaphnia dubia for Young/female on 2013-06-04. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
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SWAMP Data: |
SWAMP |
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Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
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Evaluation Guideline: |
The sample is toxic when the response of the organisms exposed to the sample is significantly different (worse) than the response of the organisms exposed to the laboratory control based on statistical hypothesis testing. An exceedance is counted when the significant effect code is “Significant; Less Similarity,” which means that the sample result is significantly different than the control result, and the percent effect is greater than the evaluation threshold. The default evaluation threshold is 20% unless otherwise stated. |
Guideline Reference: |
Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 |
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Spatial Representation: |
The samples were collected at monitoring site: 404S44532 ( Potero Valley Creek (44532) ). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04. |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
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Line of Evidence (LOE) for Decision ID 137818, Zinc
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Region 4 |
Triunfo Canyon Creek Reach 2 |
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LOE ID: |
251446 |
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Pollutant: |
Zinc |
LOE Subgroup: |
Pollutant-Sediment |
Matrix: |
Sediment |
Fraction: |
Total |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
1 |
Number of Exceedances: |
0 |
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Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Zinc . |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
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SWAMP Data: |
SWAMP |
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Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
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Evaluation Guideline: |
The evaluation guideline for zinc is the probable effect concentration (PEC) of 459 mg/kg dry weight (MacDonald et al., 2000a). |
Guideline Reference: |
Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 |
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Spatial Representation: |
Data were collected from 1 station(s). Station Code(s): 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
Data for this waterbody were collected over the date range 2013-06-04 to 2013-06-04 |
Environmental Conditions: |
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QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
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Line of Evidence (LOE) for Decision ID 137818, Zinc
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Region 4 |
Triunfo Canyon Creek Reach 2 |
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LOE ID: |
268386 |
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Pollutant: |
Zinc |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
1 |
Number of Exceedances: |
0 |
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Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Zinc. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
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SWAMP Data: |
SWAMP |
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Water Quality Objective/Criterion: |
The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 120 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
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Evaluation Guideline: |
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Guideline Reference: |
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Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
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Line of Evidence (LOE) for Decision ID 137818, Zinc
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Region 4 |
Triunfo Canyon Creek Reach 2 |
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LOE ID: |
268552 |
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Pollutant: |
Zinc |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Dissolved |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
1 |
Number of Exceedances: |
0 |
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Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Zinc. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
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Water Quality Objective/Criterion: |
The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 120 ug/L (California Toxics Rule, 2000). |
Objective/Criterion Reference: |
Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
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Evaluation Guideline: |
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Guideline Reference: |
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Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
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Line of Evidence (LOE) for Decision ID 137810, pH
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Region 4 |
Triunfo Canyon Creek Reach 2 |
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LOE ID: |
265064 |
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Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
1 |
Number of Exceedances: |
0 |
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Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for pH. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
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SWAMP Data: |
SWAMP |
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Water Quality Objective/Criterion: |
Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
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Evaluation Guideline: |
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Guideline Reference: |
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Spatial Representation: |
The samples were collected at 1 monitoring site: 404S44532 (Potero Valley Creek (44532)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-04 and 2013-06-04 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
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Line of Evidence (LOE) for Decision ID 137810, pH
|
Region 4 |
Triunfo Canyon Creek Reach 2 |
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LOE ID: |
265008 |
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Pollutant: |
pH |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
1 |
Number of Exceedances: |
0 |
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Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed RWB4 So. CA Stormwater Monitoring Coalition data for Triunfo Canyon Creek Reach 2 to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for pH. |
Data Reference: |
Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. |
|
SWAMP Data: |
SWAMP |
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Water Quality Objective/Criterion: |
Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. |
Objective/Criterion Reference: |
Water Quality Control Plan Los Angeles Region R4 Basin Plan |
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Evaluation Guideline: |
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Guideline Reference: |
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Spatial Representation: |
The samples were collected at 1 monitoring site: 404S18250 (Potrero Valley Creek (18250)). |
Temporal Representation: |
The samples were collected between the dates of 2013-06-05 and 2013-06-05 |
Environmental Conditions: |
|
QAPP Information: |
SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
QAPP Information Reference(s): |
This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. |
|