| Water Body Name: | San Vicente Creek (Santa Cruz County) |
| Water Body ID: | CAR3041102320020124141932 |
| Water Body Type: | River & Stream |
DECISION ID |
86738 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
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| Pollutant: | Sedimentation/Siltation |
| Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Reason for Delisting: | Flaws in original listing |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
The original decision to list San Vicente Creek for Sedimentation is inconsistent with the Listing Policy and evaluation of the complete data set and new data indicate that beneficial uses are supported. This conclusion is based on the following supporting evidence: First, the original decision to add the water segment to the CWA section 303(d) List was based on a partial data set (summarized in LOE 1835) and when combined with the complete data set for the period of record (LOEs 1835 and 30273), the decision should have been ¿Do Not List¿. Based on the available data (49 months of daily turbidity measurements), 158 of the 1483 samples exceed the water quality objective (Drinking Water MCL of 5 NTU's) and this does not exceed the allowable frequency listed in Tables 3.2 or 4.2 of the Listing Policy. Furthermore, when dry weather months are excluded (June, July, August, and September) from this assessment, there are a total of 1027 samples with 157 exceedances of the Drinking Water MCL and again supports the removal of this water segment / pollutant combination from the 303(d) List. Second, the original decision to add the water segment to the CWA section 303(d) List was supported by the habitat typing data presented in LOE # 1838. However, these data do not meet the following criteria of the Listing Policy and therefore can not be used alone to support a listing for sedimentation: 1. Section 3.8 of the Listing Policy states "For adverse biological response related to sedimentation, the water segment shall be placed on the section 303(d) list if adverse biological response is identified and effects are associated with clean sediment load..." Based on the data and information provided, no adverse biological response has been identified. Furthermore, a recent publication ¿Steelhead/Rainbow Trout (Oncorhynchus mykiss) Resources South of the Golden Gate, California (Becker and Reining, 2008) discusses two recent fish population sampling events in 1998 and 2006. Both found ¿multiple year classes¿ and a 2001 resources protection plan states that San Vicente Creek ¿supports a healthy steelhead run¿. 2. Section 3.8 of the Listing Policy goes on to say "Waters shall be placed on the section 303(d) list if evaluation of guidelines (satisfying the conditions of section 6.1.3) are exceeded using the binomial distribution in section 3.1." Section 6.1.3 identifies the criteria required for an evaluation guideline to be used. No evaluation guideline is cited for this line of evidence. Therefore, this line of evidence does not meet the requirements of the Listing Policy. 3. Section 6.1.4 of the Listing Policy states that¿¿numeric data are considered credible and relevant for listing purpose if the data set submitted meets the minimum quality assurance/quality control requirements¿¿. These include a QAPP or equivalent documentation. No quality assurance documentation is available for the Habitat Typing data summarized in the Line of Evidence and therefore it does not meet the requirements of the Listing Policy. Finally, a 2010 habitat typing report for San Vicente Creek contradicts the findings summarized in LOE 1838 (which summarizes a habitat typing report from 1995). Specifically, 74 percent of the 123 pool tail-out areas evaluated were scored as ¿good¿ spawning conditions and the dominate substrate was recorded as gravel and small cobble. Note that 20 percent of the pool tail-out areas evaluated were scored ¿unsuited for spawning due to inappropriate substrate such as bedrock, log sills, boulders, or other considerations unrelated to embeddeness in fine sediment¿. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used do not satisfy the data quality requirements of section 6.1.4 of the Policy and therefore should not be used alone to make this decision. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. When the entire turbidity data set is evaluated, 158 of the 1483 samples exceed the water quality objective and this does not exceed the allowable frequency listed in Table 4.2 of the Listing Policy. 4. When the dry weather months are eliminated from the turbidity data set is evaluated, 157 of the 1027 samples exceed the water quality objective and this does not exceed the allowable frequency listed in Table 4.2 of the Listing Policy. 5. A more recent habitat typing assessment from this water segment indicates good spawning habitat and therefore the findings of the 1995 report are contradicted. 6. Pursuant to section 4.11 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 be removed from the section 303(d) list because applicable water quality standards for the pollutant are not being exceeded. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the CWA section 303(d) List.
This conclusion is based on the staff findings that: 1. The data used do not satisfy the data quality requirements of section 6.1.4 of the Policy and therefore should not be used alone to make this decision. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. When the entire turbidity data set is evaluated, 158 of the 1483 samples exceed the water quality objective and this does not exceed the allowable frequency listed in Table 4.2 of the Listing Policy. 4. When the dry weather months are eliminated from the turbidity data set is evaluated, 157 of the 1027 samples exceed the water quality objective and this does not exceed the allowable frequency listed in Table 4.2 of the Listing Policy. 5. A more recent habitat typing assessment from this water segment indicates good spawning habitat and therefore the findings of the 1995 report are contradicted. 6. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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| LOE ID: | 19416 | ||||
| Pollutant: | Turbidity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Aquatic Life Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Turbidity(NTU). | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-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, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
| Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 30272 | ||||
| Pollutant: | Turbidity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Warm Freshwater Habitat | Wildlife Habitat | ||||
| Number of Samples: | 1483 | ||||
| Number of Exceedances: | 42 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Daily turbidity measurements taken from the influent at the Davenport Water treatment plant. Forty-two of the 1483 measurements exceed 25 NTU's ( the evaluation guideline protective of steelhead trout). | ||||
| Data Reference: | San Vicente Creek Turbidity data Feb 2002 - Feb 2007 | ||||
| SWAMP Data: | Non-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, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
| Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
| Spatial Representation: | Single monitoring location - at the Davenport water treatment plant intake point. | ||||
| Temporal Representation: | Daily measurements the month of December 2001- February 2002 and December 2002. Daily data between March 2002 and November 2002 is not provided. In addition, daily measurements from January 2003- February 2007. There are 5 months missing from this data set and they include July 2003, December 2003, April 2004, October 2006 and December 2006. These data are in addition to the data summarized in LOE # 1835 (for 31 days in December 2001, 30 days in January 2002, and 30 days in December 2002). | ||||
| Environmental Conditions: | Information on the environmental condition at the intake is not included with this data. | ||||
| QAPP Information: | Information on the Quality Assurance associated with this data is not provided. However, the administrative record for the original 2006 List of impaired waters contains an email from staff at the treatment plant stating that the Turbidity meter is calibrated quarterly, and more often in inclement weather, using solid standards provided by the manufacturer. | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 1838 | ||||
| Pollutant: | Sedimentation/Siltation | ||||
| LOE Subgroup: | Narrative Description Data | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Preservation of Rare & Endangered Species | ||||
| Number of Samples: | 70 | ||||
| Number of Exceedances: | 57 | ||||
| Data and Information Type: | HABITAT ASSESSMENT | ||||
| Data Used to Assess Water Quality: | Flatwater habitat types comprised 76% of the total length of the survey, riffles comprised 8%, and pools comprised 15%. The pools are relatively shallow, with only 21 of the 70 (30%) pools having a maximum depth greater than 3 feet. Fifty-seven of the 70 pool tail-outs measured had embeddedness rating greater than 50% (CCRWQCB, 2004f).
The relatively large amount of cover is provided by primarily boulders in a habitat types. The mean percent canopy density for the stream was 87% which is considered adequate cover for juvenile coho salmon and steelhead. The percentage of right and left bank covered with vegetation was moderate at 73% and 76% respectively. Two gradients riffles measured had large cobble as the dominant substrate. Large cobble was also dominant in 4 of the 7 step runs measured. |
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| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Seven sites were sampled. San Vicente Creek is a B3 channel type for the entire 3.40 miles (17,930 feet) of stream surveyed. | ||||
| Temporal Representation: | The stream was surveyed on October 16, 17, and 21 of 1995. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Biological sampling during stream inventory was used to determine fish species composition and their distribution throughout the stream. In San Vicente fish presences was observed from the stream banks and seven sites were sampled using a Smith-Root Model 12 Backpack electrofishing unit. The sampling techniques are discussed in the California Salmonid Stream Habitat Restoration Manual. | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 1835 | ||||
| Pollutant: | Sedimentation/Siltation | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 91 | ||||
| Number of Exceedances: | 22 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | The Davenport Sanitation District (DSD), which withdraws water from San Vicente Creek to serve the town of Davenport (adjacent to San Vicente Creek) has been unable to produce potable drinking water during periods of heavy rainfall due to high levels of turbidity. Turbidity levels at the influent were measured for 31 days in December 2001, 30 days in January 2002, and 30 days in December 2002 by the County of Santa Cruz Water and Wastewater Division at the Davenport Water influent. Twenty-two of 91 measurements were in exceedance of the criterion (Frediani, J. 2004). | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Title 22 Secondary MCL = 5 Units | ||||
| Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected in San Vicente Creek at the Davenport water treatment plant intake point. | ||||
| Temporal Representation: | Samples were collected daily in December 2001, January 2002, and December 2002. Other data have been collected, but were available at time of data solicitation. | ||||
| Environmental Conditions: | Records state that standards are exceeded "during periods of heavy rainfall".
The watershed is primarily privately owned and is managed for timber production, open pit mining, cattle grazing, urbanization and water diversion. |
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| QAPP Information: | State Board was unable to obtain any QA/QC information. | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 1836 | ||||
| Pollutant: | Sedimentation/Siltation | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Not Specified | ||||
| Fraction: | None | ||||
| Beneficial Use: | Preservation of Rare & Endangered Species | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | HABITAT ASSESSMENT | ||||
| Data Used to Assess Water Quality: | Stream Inventory Report by DFG - 1995-1996 (Frediani, J. 2004):
- Over 81% of the pool tail crests surveyed had greater than 51% embeddedness. - 76% of the surveyed stream length was flat water (indicates lack of needed pools). - The pools surveyed were relatively shallow 70% were less than 3 feet deep. - LWD (Large Woody Debris) was lacking in nearly all habitats. - Mean shelter rating for pools was low with a rating of 12. A pool shelter rating of approximately 100 is desirable. -Threatened/endangered species in the creek (coho salmon, steelhead trout, California red-legged frog) are suffering from habitat degradation and associated decreased carrying capacity. - Large cobble (dominant in 4 of 7 step runs measured) is considered unsuitable for spawning steelhead and coho salmon. - The percentage of bank covered with vegetation was moderate at 73-76%. |
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| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | WQO: The suspended sediment load and suspended sediment discharge rate of surface waters shall not be altered in such a manner as to cause nuisance or adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | San Vicente Creek (304.11) was sampled. Biological sampling occurred at 7 sites and observations were made from the stream banks throughout the stream. The habitat was assessed throughout the stream with an inventory method that samples approximately 10% of the flatwater and riffle habitat. | ||||
| Temporal Representation: | The San Vicente Creek Stream Inventory Report was conducted by DFG on 7/9/1996 - 7/14/1996. Fish presence was observed on Oct. 16, 17, 21, 1995. | ||||
| Environmental Conditions: | The watershed is primarily privately owned and is managed for timber production, open pit mining, cattle grazing, urbanization and water diversion. | ||||
| QAPP Information: | The Habitat Inventory follows the methodology from the California Salmonid Stream Habitat Restoration Manual (Flosi and Reynolds, 1991 rev. 1994). The California Conservation Corps (CCC) Technical Advisors and Watershed Stewards Project/AmeriCorps (WSP/AmeriCorps) Members that conducted the inventory were trained in standardized habitat inventory methods by the California Department of Fish and Game (DFG). This inventory was conducted by a two-person team.
Fish were sampled by DFG using a Smith-Root Model 12 backpack electrofishing unit. Sampling techniques are discussed in the California Salmonid Stream Habitat Restoration Manual. |
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| QAPP Information Reference(s): | |||||
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| LOE ID: | 30273 | ||||
| Pollutant: | Turbidity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 1392 | ||||
| Number of Exceedances: | 136 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | The Davenport Sanitation District (DSD), which withdraws water from San Vicente Creek to serve the town of Davenport (adjacent to San Vicente Creek) has been unable to produce potable drinking water during periods of heavy rainfall due to high levels of turbidity. Turbidity levels at the influent are measured daily by the County of Santa Cruz Water and Wastewater Division at the Davenport Water influent. A total of 157 out of 1485 daily measurements taken between February 2002 and February 2007 were in exceedance of the criterion (data submitted by M. Duffy from Redwood Empire). This does not includ the three months of data summarized in LOE # 1835. | ||||
| Data Reference: | San Vicente Creek Turbidity data Feb 2002 - Feb 2007 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Title 22 Secondary MCL = 5 Units | ||||
| Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Single monitoring location - at the Davenport water treatment plant intake point. | ||||
| Temporal Representation: | Daily measurements from February 2002 as well as January 2003- February 2007. There are 5 months missing from this data set and they include July 2003, December 2003, April 2004, October 2006 and December 2006. These data are in addition to the data summarized in LOE # 1835 (for 31 days in December 2001, 30 days in January 2002, and 30 days in December 2002). | ||||
| Environmental Conditions: | Information on the environmental condition at the intake is not included with this data. | ||||
| QAPP Information: | Information on the Quality Assurance associated with this data is not provided. However, the administrative record for the original 2006 List of impaired waters contains an email from staff at the treatment plant stating that the Turbidity meter is calibrated quarterly, and more often in inclement weather, using solid standards provided by the manufacturer | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 59009 | ||||
| Pollutant: | Sediment | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Aquatic Life Use: | Fish Spawning | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Surveys of fish and game biologists/other professionals | ||||
| Data Used to Assess Water Quality: | Water Board staff reviewed California Dept. of Fish and Wildlife Stream Habitat Assessment Report for San Vicemte Creek (surveyed in 2010) to evaluate impacts to beneficial uses. The following excerpts are taken from the report's conclusions. Note, each data type listed below is obtained by visual estimate.
Embeddeness: The depth of cobble embeddedness was estimated at pool tail-outs. Of the 123 pool tail-outs measured, 13 had a value of 1 (11%), 78 had a value of 2 (63%), 8 had a value of 3 (7%), 24 had a value of 5 (20%) (Graph 6). On this scale, a value of 1 indicates the best spawning conditions and a value of 4 the worst. Additionally, a value of 5 was assigned to tail-outs deemed unsuited for spawning due to inappropriate substrate such as bedrock, log sills, boulders, or other considerations unrelated to embeddeness in fine sediment. Dominant substrate: Eighty of the 123 pool tail-outs measured had gravel and small cobble as the dominant substrate. This is generally considered good for spawning salmonids. |
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| Data Reference: | California Department of Fish and Wildlife Santa Cruz County Big Basin Coastal Watershed Stream Habitat Assessment Reports. San Vicente Creek, Surveyed 2010, Report Completed in 2013. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The suspended sediment load and suspended sediment discharge rate of surface waters shall not be altered in such a manner as to cause nuisamce or adversely affect beneficial uses (CCRWQCP, Water Quality Control Plan (Basin Plan) General Objective) | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
| Evaluation Guideline: | none | ||||
| Guideline Reference: | California Department of Fish and Wildlife Santa Cruz County Big Basin Coastal Watershed Stream Habitat Assessment Reports. San Vicente Creek, Surveyed 2010, Report Completed in 2013. | ||||
| Spatial Representation: | The total length of the stream surveyed was 18,127 feet with an additional 536 feet of side channel. The survey began at the confluence with Pacific Ocean and extended upstream 3.4 miles. | ||||
| Temporal Representation: | The habitat inventory was conducted by two Watershed Stewards Project/AmeriCorps (WSP) Members between 6/14/2010 and 6/21/2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | There is no Quality Assurance documentation for this data. The habitat inventory conducted in San Vicente Creek follows the methodology presented in the California Salmonid Stream Habitat Restoration Manual (Flosi et al, 1998). The Watershed Stewards Project/AmeriCorps (WSP) Members that conducted the inventory were trained in standardized habitat inventory methods by the California Department of Fish and Wildlife (CDFW). The protocol does not ourline any qualty control measurements or visual estimates. | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 1837 | ||||
| Pollutant: | Sedimentation/Siltation | ||||
| LOE Subgroup: | Population/Community Degradation | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Preservation of Rare & Endangered Species | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Site one yielded 37 steelhead ranging in total length from 62 millimeters to 187 millimeters and 1 coho salmon (81mm total length). Site two yielded 67 steelhead ranging in total length from 59 to192 mm, 2 sculpin (125mm and 137mm) and 1 coho (90 mm). Site three yielded 32 steelhead ranging in total length 53 - 188 mm and 4 sculpin ranging in length from 110 mm - 169 mm. Site four yielded 12 steelhead ranging in total length from 55 - 157mm and 1 sculpin (117mm). Site five yielded 25 steelhead ranging in total length from 60 - 206mm, 1 coho salmon (85mm) and 1 Pacific giant salamander. Site six yielded 30 steelhead ranging in total length from 54 mm - 269 mm. Site seven yielded 25 steelhead ranging in total length from 57 - 242 mm 2 Pacific giant salamanders and a red-legged frog (CCRWQCB, 2004f). | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | WQO: The suspended sediment load and suspended sediment discharge rate of surface waters shall not be altered in such a manner as to cause nuisance or adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Seven sites were sampled. The first site was located at stream mile 0.16 and included 2 mid-channel pools and a run. The second site was located at stream mile 0.49 and included a lateral scout pool (root wad enhanced), a run and a riffle. The third site was located at stream mile 1.01 and included a lateral scour pool, (root wad enhanced), a riffle and a mid-channel pool. The fourth site was located at stream mile 1.95 and included a riffle, a run, and a mid-channel pool. The fifth site was located at stream mile 2.6 and included 2 mid-channel pools and a riffle. Site six was located at stream mile 2.93 and included a mid-channel, a riffle, and a plunge. Site seven was located at stream mile 3.3 and included 2 plunge pools and a step run. | ||||
| Temporal Representation: | Samples were collected on October 16, 17, and 21 of 1995. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Habitat Inventory follows the methodology from the California Salmonid Stream Habitat Restoration Manual (Flosi and Reynolds, 1991 rev. 1994). The California Conservation Corps (CCC) Technical Advisors and Watershed Stewards Project/AmeriCorps (WSP/AmeriCorps) Members that conducted the inventory were trained in standardized habitat inventory methods by the California Department of Fish and Game (DFG). This inventory was conducted by a two-person team.
Fish were sampled by DFG using a Smith-Root Model 12 backpack electrofishing unit. Sampling techniques are discussed in the California Salmonid Stream Habitat Restoration Manual. |
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| QAPP Information Reference(s): | |||||
DECISION ID |
82894 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
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| 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: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| 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 sample size for the evaluation guideline for both water contact and non-contact recreation for Escherichia coli (E. coli) 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 using table 3.2. Therefore, the use support rating is set to 'insufficient information'. Four lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline (USEPA Ambient Water Quality Criteria for Bacteria -1986) set to protect for water contact recreation (i.e. swimming, wading etc.) and 0 of 5 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 5 samples exceed the evaluation guideline set to protect for water contact recreation (i.e. swimming, wading etc.) and 0 of 5 samples exceed the water quality objective for non-contact recreation. Neither 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: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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| LOE ID: | 18426 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Escherichia coli. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. E. coli is a fecal coliform. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 19704 | ||||
| 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: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Escherichia coli. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. | ||||
| Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
| Evaluation Guideline: | Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15) | ||||
| Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-8/28/2002. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 18425 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Escherichia coli. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. | ||||
| Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
| Evaluation Guideline: | Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15) | ||||
| Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 19705 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| 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: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Escherichia coli. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. E. coli is a fecal coliform. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-8/28/2002. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
80800 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
||
| Pollutant: | Nitrate |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Four lines of evidence are available in the administrative record to assess this pollutant. None of the 12 samples exceed the water quality objectives for Municipal & Domestic Supply or for Agricultural Supply. 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. None of the 12 samples exceed the water quality objectives for Municipal & Domestic Supply or for Agricultural Supply and 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 16 samples is needed to determine if a beneficial use is fully supported using Table 3.1. 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: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 18224 | ||||
| Pollutant: | Nitrate | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Nitrate as N. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). | ||||
| Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
| Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 19709 | ||||
| Pollutant: | Nitrate | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 9 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Nitrate as N. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). | ||||
| Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
| Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 2/25/1998-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 19708 | ||||
| Pollutant: | Nitrate | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Agricultural Supply | ||||
| Number of Samples: | 9 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Nitrate as N. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 2/25/1998-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 18208 | ||||
| Pollutant: | Nitrate | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Agricultural Supply | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Nitrate as N. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
73047 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
||
| Pollutant: | Oxygen, Dissolved |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | No new data were assessed.
This pollutant is being considered for placement on the 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. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the 9 samples exceeded the water quality objective for dissolved oxygen in Cold Freshwater Habitats. 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. 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 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 9 samples exceeded the water quality objective 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: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 19790 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Aquatic Life Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Oxygen, Dissolved. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 17960 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Aquatic Life Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Oxygen, Dissolved. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
73376 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
||
| Pollutant: | Specific Conductivity |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | No new data were assessed.
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. Two lines of evidence are available in the administrative record to assess this pollutant. Note that the pollutant name for the older LOEs and decisions is electrical conductivity. This was an error and the pollutant name should have always been specific conductivity. For this reason, the pollutant name was changed for this decision and sample and exceedance counts are summed for LOEs with both pollutant names in this assessment for specific conductivity. None of the 10 samples exceed the Agricultural Supply water quality objective. 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. 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. None of the 10 samples exceed the Agricultural Supply water quality objective 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: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 19804 | ||||
| Pollutant: | Electrical Conductivity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Agricultural Supply | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Conductivity(Us). | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 17442 | ||||
| Pollutant: | Electrical Conductivity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Agricultural Supply | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Conductivity(Us). | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
73100 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
||
| Pollutant: | Temperature, water |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| 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.
Two lines of evidence are available in the administrative record to assess this pollutant. None of the 10 samples exceed the Cold Freshwater Habitat water quality objective. 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. None of the 10 samples exceed the Cold Freshwater Habitat water quality objective and 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 fully supported using Table 3.2. 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: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 18822 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Aquatic Life Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Water Temperature. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-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 (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). | ||||
| Guideline Reference: | Inland Fishes of California | ||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 19199 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Aquatic Life Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Water Temperature. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-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 (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). | ||||
| Guideline Reference: | Inland Fishes of California | ||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
77573 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
||
| Pollutant: | pH |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| 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 are available in the administrative record to assess this pollutant. None of the 10 samples exceed the Agricultural Supply water quality objective, 1 of 10 samples exceed the Cold Freshwater Habitat water quality objective and None of the samples exceed the numeric objective for Municipal & Domestic Supply, Non-Contact Recreation and Water Contact Recreation. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. None of the 10 samples exceed the Agricultural Supply water quality objective, 1 of 10 samples exceed the Cold Freshwater Habitat water quality objective and none of the samples exceed the numeric objective for Municipal & Domestic Supply, Non-Contact Recreation and Water Contact Recreation The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using Table 3.1.. 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: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 19462 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Aquatic Life Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 18721 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 19463 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 19465 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 18738 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 18720 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Aquatic Life Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 1 of 4 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 18737 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 18719 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Agricultural Supply | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304-SANVI-21 - San Vicente Creek In Davenport] | ||||
| Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 19464 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 19439 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Agricultural Supply | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Santa Cruz County Environmental Health Monitoring Program (R3_SCCEH) data for San Vicente Creek (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for pH. | ||||
| Data Reference: | Final Data File used for assessment: Santa Cruz County Environmental Health data 1971-1996 | ||||
| Final Data File used for assessment: Santa Cruz County Environmental Health data 1997-2006 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Vicente Creek (Santa Cruz County) was collected at 1 monitoring site [ 304SVM_SCC - SAN VICENTE CR at MOUTH] | ||||
| Temporal Representation: | Data was collected over the time period 12/11/2001-5/16/2006. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
| QAPP Information: | This monitoring program has been underway for thirty years, with changes over time to protocols, level of QA, and documentation. In general, QA documentation included with the dataset is minimal. However, data quality appears to be reasonably good. | ||||
| QAPP Information Reference(s): | |||||