| Water Body Name: | San Vicente Creek (Santa Cruz County) |
| Water Body ID: | CAR3041102320020124141932 |
| Water Body Type: | River & Stream |
DECISION ID |
4717 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
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| Pollutant: | Sedimentation/Siltation |
| Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2006) |
| Revision Status | Revised |
| Sources: | Source Unknown |
| Expected TMDL Completion Date: | 2019 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Regional Board Conclusion:
This pollutant is being considered for Removal from the section 303(d) list under sections 2.1, 3.6, 3.7 and 3.10 of the Listing Policy. Under section 3.6 a single line of evidence is necessary to assess listing status. Five lines of evidence are available in the administrative record to assess this pollutant. Numeric data as well as information on habitat conditions in this water body have been assessed. Based on section 3.1 the site exceeds the drinking water standard. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of maintaining this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Twenty two of 91 measurements were in exceedance of the Title 22 Secondary MCL criterion for turbidity, and these exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. State Board Review and Conclusion: The April 19, 2010 State Water Board staff report for the 2010 Integrated Report found the following: All data and information for this water body did not get included in the Central Coast Water Board staff report. Because additional data (summarized in LOEs # 30272 and 30272) were not available prior to the 45 day public comment period, the Central Coast Regional Board decided not to Delist. The Central Coast Water Board staff provided their data evaluation to Delist this water body for Sedimentation/Siltation to the State Water Board staff. Based on the data and information provided by the Regional Board staff, State Water Board staff recommend to change the decision for Sedimentation/Siltation from Do Not Delist to Delist. At the June 15, 2010 State Water Board meeting for approval of the 2010 Integrated Report, the State Water Board directed staff to reevaluate the listing recommendation for this water body - pollutant combination. Based on this reevaluation, State Water Board staff found that the available data are insufficient because 1) an acceptable guideline is not available to evaluate some of the data and 2) from the entire data set collected during a time period, only a subset of data appear to have been submitted to the Water Boards. Given the data limitation and lack of Quality Assurance documentation for the available data (including the data that was used in 2006 as the basis for the original listing), State Water Board staff have changed our recommendation from Delist to Do Not Delist at this time and defer the newer data to the next listing cycle, when some of the issues concerning the data itself such as QA and 'missing data' can be resolved. On August 4, 2010 the State Water Board approved the revised staff listing recommendation to not remove this water body from the 303(d) list for sedimentation/siltation. In addition, the State Water Board changed the potential source for this listing from 'silviculture' to 'source unknown'. The final approved recommendation is: This pollutant is being considered for removal from the section 303(d) list under sections 4.2 and 4.7 of the Listing Policy. Under section 4.2 and 4.7 a single line of evidence is necessary to assess listing status. Seven lines of evidence are available in the administrative record to assess this pollutant. Numeric data as well as information on habitat conditions in this water body have been assessed. Four lines of evidence summarize turbidity data (LOEs # 1835, 19416, 30272 and 30273). Note that LOE# 1835 is for turbidity measurements in water and not sediment. Combining the data from LOE # 1835 and LOE# 30273, 157 out of 1483 samples exceed the secondary MCL for turbidity (5 NTUs) and this does not exceed the allowable frequency in Table 4.2 of the Listing Policy. Combining the data from LOEs # 19416, 30272, a total of 42 out of 1489 samples exceed the evaluation guideline protective of steelhead trout. This does not exceed the allowable frequency in Table 4.2 of the Listing Policy. In addition, Habitat Typing data states that Fifty-seven of the 70 pool tail-outs measured had embeddedness rating greater than 50% (as summarized in LOE # 1838). This is not compared to any evaluation guideline (or Water Quality objective) and therefore cannot be assessed using the listing policy and the Binomial test. It should be noted that the 2006 recommendation to add San Vicente Creek to the List of Impaired waterbodies was based solely on the habitat assessment and the 3 months of turbidity data (daily in December 2001, January 2002 and December 2002). |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | At the June 15, 2010 State Water Board meeting for approval of the 2010 Integrated Report, the State Water Board directed staff to reevaluate the listing recommendation for this water body - pollutant combination. Based on this reevaluation, State Water Board staff found that the available data are insufficient because 1) an acceptable guideline is not available to evaluate some of the data and 2) from the entire data set collected during a time period, only a subset of data appear to have been submitted to the Water Boards. Given the data limitation and lack of Quality Assurance documentation for the available data (including the data that was used in 2006 as the basis for the original listing), State Water Board staff have changed our recommendation from Delist to Do Not Delist at this time and defer the newer data to the next listing cycle, when some of the issues concerning the data itself such as QA and 'missing data' can be resolved.
On August 4, 2010 the State Water Board approved the revised staff listing recommendation to not remove this water body from the 303(d) list for sedimentation/siltation. In addition, the State Water Board changed the potential source for this listing from 'silviculture' to 'source unknown'. The final approved recommendation is: This pollutant is being considered for removal from the section 303(d) list under sections 4.2 and 4.7 of the Listing Policy. Under section 4.2 and 4.7 a single line of evidence is necessary to assess listing status. Seven lines of evidence are available in the administrative record to assess this pollutant. Numeric data as well as information on habitat conditions in this water body have been assessed. Four lines of evidence summarize turbidity data (LOEs # 1835, 19416, 30272 and 30273). Note that LOE# 1835 is for turbidity measurements in water and not sediment. Combining the data from LOE # 1835 and LOE# 30273, 157 out of 1483 samples exceed the secondary MCL for turbidity (5 NTUs) and this does not exceed the allowable frequency in Table 4.2 of the Listing Policy. Combining the data from LOEs # 19416, 30272, a total of 42 out of 1489 samples exceed the evaluation guideline protective of steelhead trout. This does not exceed the allowable frequency in Table 4.2 of the Listing Policy. In addition, Habitat Typing data states that Fifty-seven of the 70 pool tail-outs measured had embeddedness rating greater than 50% (as summarized in LOE # 1838). This is not compared to any evaluation guideline (or Water Quality objective) and therefore cannot be assessed using the listing policy and the Binomial test. It should be noted that the 2006 recommendation to add San Vicente Creek to the List of Impaired waterbodies was based solely on the habitat assessment and the 3 months of turbidity data (daily in December 2001, January 2002 and December 2002). |
| State Board Decision Recommendation: | After review of this Regional Board decision, the State Water Board recommends that this water body - pollutant combination should not be removed from the section 303(d) list because it cannot be determined if applicable water quality standards are being met. |
| USEPA Action (if applicable): | USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant. |
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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: | 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: | 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: | 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): | |||||
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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: | 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): | |||||
DECISION ID |
11742 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
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| Pollutant: | Electrical Conductivity |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Two 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. 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: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes
that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded. |
| USEPA Action (if applicable): | |
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| 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): | |||||
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| 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): | |||||
DECISION ID |
11743 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
||
| Pollutant: | Escherichia coli (E. coli) |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the 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.
Four lines of evidence are available in the administrative record to assess this pollutant. None of the 5 samples exceed the Evaluation Guideline (USEPA Ambient Water Quality Criteria for Bacteria, 1986) as it applies to the Water Contact Recreation beneficial use or 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 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 5 samples exceed the Evaluation Guideline (USEPA Ambient Water Quality Criteria for Bacteria, 1986) as it applies to the Water Contact Recreation beneficial use or the water quality objective for Non-Contact Recreation and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes
that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded. |
| USEPA Action (if applicable): | |
|
|||||
| 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: | 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: | 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 |
11745 |
Region 3 |
San Vicente Creek (Santa Cruz County) |
||
| Pollutant: | Low Dissolved Oxygen |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. None of the 9 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 9 samples exceed the Cold Freshwater Habitat 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: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes
that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded. |
| USEPA Action (if applicable): | |
|
|||||
| 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): | |||||
|
|||||
| 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): | |||||
DECISION ID |
11744 |
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: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 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 does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded. |
| USEPA Action (if applicable): | |
|
|||||
| 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): | |||||
|
|||||
| 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): | |||||
DECISION ID |
11746 |
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: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
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 does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes
that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded. |
| USEPA Action (if applicable): | |
|
|||||
| 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): | |||||
|
|||||
| 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): | |||||
DECISION ID |
11747 |
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: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Ten lines of evidence 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. None of these exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes
that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded. |
| USEPA Action (if applicable): | |
|
|||||
| 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: | 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): | |||||
|
|||||
| 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: | 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: | 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: | 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: | 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): | |||||
|
|||||
| 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: | 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: | 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): | |||||