| Water Body Name: | Arroyo De La Cruz (San Luis Obispo) |
| Water Body ID: | CAR3101200020160427054096 |
| Water Body Type: | River & Stream |
DECISION ID |
125687 |
Region 3 |
Arroyo De La Cruz (San Luis Obispo) |
||
| Pollutant: | Escherichia coli (E. coli) |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | The State Water Board’s Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California (the “ISWEBE Plan”) contains two bacteria water quality objectives applicable to the REC-1 beneficial use, which were adopted on August 7, 2018. Because the salinity level of this waterbody is equal to or less than 1 part per thousand 95 percent or more of the time, the E. coli bacteria objective applies. Therefore, this waterbody is being considered for placement on the CWA section 303(d) List under section 3.3 of the Listing Policy, as applicable, using the E. coli objective. In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. E.coli populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, indicator bacteria do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of E. coli in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard. Additionally, water quality conditions in waterbodies may change as a result of management actions that have been implemented to address E.coli. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the CWA section 303(d) List, which could result in the unnecessary expenditure of public resources or missing a human health problem. Historic lines of evidence for data collected prior to 2010 were evaluated pursuant to these considerations and were not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy. All samples are evaluated using the statistical threshold value (STV) water quality objective for water contact recreation (ISWEBE, SWRCB 2019). The water quality objective states that the STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month. Where there are more than one samples collected within any six-week period, a geomean of those samples is calculated and evaluated using the geomean water quality objective) for water contact recreation (ISWEBE, SWRCB 2019. Four lines of evidence are available in the administrative record to assess this pollutant. One out of the six samples collected since 2010 exceed the STV water quality objective for water contact recreation (see LOEs 150247, 150108, and 148238). One of the two geomeans exceed the geomean water quality objective (see LOE148237). These sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 26 samples is needed to determine if a beneficial use is supported and a minimum of five exceedances is needed to determine if beneficial uses are not supported using Table 3.2 of the Listing Policy. Therefore, the use support rating is set to 'insufficient information'. The data were collected between 2010 and 2018 and represent a range of hydrologic conditions (both wet and dry years). This sample count of data collected since 2010 is adequate to determine beneficial use support in accordance with the Listing Policy. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the CWA section 303(d) List because applicable water quality standards are not being exceeded. 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. Zero out of the six samples exceed the STV water quality objective and one of the two geomeans exceed the geomean water quality objective (ISWEBE, SWRCB 2019) for water contact recreation and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. |
| State Board Review of Regional Board Conclusion and Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the CWA section 303(d) List because applicable water quality standards are not being exceeded. 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. Zero out of the six samples exceed the STV water quality objective and one of the two geomeans exceed the geomean water quality objective (ISWEBE, SWRCB 2019) for water contact recreation and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| State Board Decision Recommendation: | |
|
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| LOE ID: | 148237 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Arroyo de la Cruz to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Escherichia coli. | ||||
| Data Reference: | SWAMP FIB data: 1/4/2018--4/16/2018. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The bacteria water quality objective applicable to all non-saline waters, is a geometric mean (GM) of E. coli not to exceed 100 cfu/100 mL. The waterbody GM shall not be greater than the applicable GM magnitude in any six-week interval, calculated weekly (ISWEBE 2018). | ||||
| Objective/Criterion Reference: | Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for Arroyo de la Cruz was collected at 1 monitoring site [310ADC] | ||||
| Temporal Representation: | Data was collected on 2 sampling date(s): 04/17/2018 and 01/09/2018. CCAMP data is collected monthly and other samples associated with this project are included in another LOE for this site | ||||
| Environmental Conditions: | |||||
| QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAPrP. QA data are included in submission. All data are flagged as appropriate. | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 148238 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Arroyo de la Cruz to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Escherichia coli. | ||||
| Data Reference: | SWAMP FIB data: 1/4/2018--4/16/2018. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018). | ||||
| Objective/Criterion Reference: | Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for Arroyo de la Cruz was collected at 1 monitoring site [310ADC] | ||||
| Temporal Representation: | Data was collected on 2 sampling date(s): 04/17/2018 and 01/09/2018. CCAMP data is collected monthly and other samples associated with this project are included in another LOE for this site | ||||
| Environmental Conditions: | |||||
| QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAPrP. QA data are included in submission. All data are flagged as appropriate. | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
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| LOE ID: | 150108 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018). | ||||
| Objective/Criterion Reference: | Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site(s), station(s): 310ADU | ||||
| Temporal Representation: | The samples were collected between the days of 2011-05-12 and 2011-06-15 . | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 150247 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018). | ||||
| Objective/Criterion Reference: | Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site(s), station(s): 310ADU | ||||
| Temporal Representation: | The samples were collected between the days of 2015-02-12 and 2016-04-06 . | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
DECISION ID |
130147 |
Region 3 |
Arroyo De La Cruz (San Luis Obispo) |
||
| Pollutant: | Fecal Coliform |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. The State Water Boards Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California (the ISWEBE Plan) contains two bacteria water quality objectives applicable to the REC-1 beneficial use which were adopted on August 7, 2018: where the salinity level of a waterbody is equal to or less than 1 part per thousand 95 percent or more of the time, the E. coli bacteria objective applies and where the salinity level of a waterbody is greater than 1 part per thousand 95 percent or more of the time, the Enterococci bacteria objective applies. These objectives supersede the fecal coliform water quality objective. Therefore, the fecal coliform objective for water contact recreation is not applicable to this waterbody and those LOEs have been removed from this decision. However, two lines of evidence are available in the administrative record to assess this pollutant and the non-contact recreation use. Zero of the four samples exceed the water quality objective for non-contact recreation. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. 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. Zero of the four samples exceed the water quality objective for non-contact recreation and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | |
|
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| LOE ID: | 150198 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a 10% exceedance rate that is calculated for a 30-Day peroid. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section 3.3.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 mL, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 mL. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site(s), station(s): 310ADU | ||||
| Temporal Representation: | The samples were collected between the days of 2015-02-12 and 2016-04-06 . | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
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| LOE ID: | 150179 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a 10% exceedance rate that is calculated for a 30-Day peroid. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section 3.3.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 mL, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 mL. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site(s), station(s): 310ADU | ||||
| Temporal Representation: | The samples were collected between the days of 2011-05-12 and 2011-06-15 . | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
DECISION ID |
114387 |
Region 3 |
Arroyo De La Cruz (San Luis Obispo) |
||
| Pollutant: | Oxygen, Dissolved |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Six lines of evidence are available in the administrative record to assess this pollutant. Zero of two samples exceed the dissolved oxygen water quality objective for cold freshwater habitat (Basin Plan). Zero of two samples exceed the dissolved oxygen water quality objective for warm freshwater habitat (Basin Plan). Zero of two sample exceeds the water quality objective for fish spawning (Basin Plan). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. 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. Zero of two samples exceed the water quality objective for cold freshwater habitat, warm freshwater habitat, and fish spawning. None of these exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | |
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| LOE ID: | 174274 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
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| LOE ID: | 174368 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
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| LOE ID: | 174528 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 174109 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 174250 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Fish Spawning | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 175224 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Fish Spawning | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
DECISION ID |
126246 |
Region 3 |
Arroyo De La Cruz (San Luis Obispo) |
||
| Pollutant: | Temperature, water |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. A total of two lines of evidence are available in the administrative record to assess this pollutant. A total of zero of four samples exceed the evaluation guideline (Moyle 1976) applied to protect the cold freshwater habitat beneficial use. The readily available data and information are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. 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. A total of zero of four samples exceed the evaluation guideline applied to protect the cold freshwater habitat beneficial use and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | |
|
|||||
| LOE ID: | 216946 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976). | ||||
| Guideline Reference: | Inland Fishes of California | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 216953 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976). | ||||
| Guideline Reference: | Inland Fishes of California | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
DECISION ID |
114389 |
Region 3 |
Arroyo De La Cruz (San Luis Obispo) |
||
| Pollutant: | Turbidity |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Four lines of evidence (two for warm and two for cold beneficial uses) are available in the administrative record to assess this pollutant. Zero of three samples exceed the evaluation guideline for warm freshwater habitat (Shoup, D.E. and Wahl D.H., 2009) and zero of three samples exceed the evaluation guideline for cold freshwater habitat (Sigler et al. 1984) used to interpret the water quality objectives for the aquatic life beneficial uses. The readily available data and information are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. 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. Zero of three samples exceeded the evaluation guideline for warm freshwater habitat and zero of three samples exceed the evaluation guideline for cold freshwater habitat and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | |
|
|||||
| LOE ID: | 183066 | ||||
| Pollutant: | Turbidity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 1 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Turbidity. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan) | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984). | ||||
| Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2015-02-12 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 182900 | ||||
| Pollutant: | Turbidity | ||||
| 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 SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Turbidity. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009). | ||||
| Guideline Reference: | The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2015-02-12 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 182334 | ||||
| Pollutant: | Turbidity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Turbidity. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan) | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984). | ||||
| Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 183133 | ||||
| Pollutant: | Turbidity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Turbidity. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009). | ||||
| Guideline Reference: | The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
DECISION ID |
114388 |
Region 3 |
Arroyo De La Cruz (San Luis Obispo) |
||
| Pollutant: | pH |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Ten lines of evidence is available in the administrative record to assess this pollutant. Zero of the 4 samples exceed the maximum pH water quality objective for Municipal and Domestic Supply, Contact and Non-contact Recreation, Cold and Warm Freshwater Habitat beneficial uses. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 26 samples is needed to determine if a beneficial use is supported and a minimum of five exceedances is needed to determine if beneficial uses are not supported using Table 3.2 of the Listing Policy. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 4 samples exceed the maximum pH water quality objective for Municipal and Domestic Supply, Contact and Non-contact Recreation, Cold and Warm Freshwater Habitat beneficial uses and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | |
|
|||||
| LOE ID: | 177524 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for municipal and domestic supply (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 177523 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for municipal and domestic supply (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 176936 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 176839 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for warm fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 176726 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 177481 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
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| LOE ID: | 177483 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
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| LOE ID: | 177551 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for warm fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 177938 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Santa Lucia Rotation data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for cold fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2015-02-12 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||
|
|||||
| LOE ID: | 177261 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB3 CCAMP Coastal Confluences data for Arroyo De La Cruz (San Luis Obispo) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 3. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for cold fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (310ADU) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-05-12 and 2011-06-15 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | SWAMP 2008, SWAMP 2017 | ||||
| QAPP Information Reference(s): | Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program | ||||