| Water Body Name: | Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa |
| Water Body ID: | CAR1142301020131101053079 |
| Water Body Type: | River & Stream |
DECISION ID |
31984 |
Region 1 |
Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa |
||
| Pollutant: | Temperature, water |
| Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Sources: | Flow Alteration/Regulation/Modification | Removal of Riparian Vegetation |
| Expected TMDL Completion Date: | 2025 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | The "Russian River HU, Middle Russian River HA, Mark West Creek HSA" water body has been split into four water bodies for the current Integrated Report cycle: (1) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa, (2) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa, (3) Russian River HU, Middle Russian River HA, Mark West HSA, tributaries to Mark West Creek (except Windsor Creek and its tributaries), and (4) Russian River HU, Middle Russian River HA, Mark West HSA, Windsor Creek and its tributaries.
LOE 47195 is a copy of placeholder LOE 4770 from the 2010 Integrated Report cycle. LOEs 47204 and 47201 are new for the current Integrated Report cycle. This pollutant is being considered for removal from the section 303(d) list under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list (i.e., sufficient justification to not delist). 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) 303(d) listing determinations made prior to 2006 were not held in an assessment database. LOE 47195 is a placeholder for the 303(d) listing data and information from a previous assessment cycle that was initially utilized to make this listing determination. (4) Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are 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 removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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|||||
| LOE ID: | 47195 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
| Data Reference: | Placeholder reference pre-2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | |||||
| Temporal Representation: | |||||
| Environmental Conditions: | |||||
| QAPP Information: | unspecified | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 47204 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 15 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | None of the 15 samples collected in Mark West Creek exceeded the evaluation guideline. Temperatures during December - April when spawning, incubation and emergence occur ranged from 7 degrees C to 11 degrees C. Temperatures during May - November when migration and rearing occur ranged from 13 degrees C to 23.5 degrees C. | ||||
| Data Reference: | Data for Water Quality in Mark West Creek, 2004-2009. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses. At no time or place shall the temperature of any COLD water be increased more than 5 degrees Fahrenheit (F) above natural receiving water temperature. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) for the North Coast Region | ||||
| Evaluation Guideline: | According to Carter (2008) the lethal temperature for spawning, incubation, and emergence life stages are 20 degrees C. The lethal temperatures for adult migration and holding, and juvenile migration and rearing is 24 degrees C. | ||||
| Guideline Reference: | Effects of Temperature, Dissolved Oxygen/Total Dissolved Gas, Ammonia, and pH on Salmonids. Implications for California's North Coast TMDLs. California Regional Water Quality Control Board, North Coast Region | ||||
| Spatial Representation: | Grab samples were collected at two sites in Mark West Creek: MWC095: (Lat. 38.5087000 Lon. -122.6418800; and MWC070: (Lat. 38.5244560 Lon. -122.6609510) | ||||
| Temporal Representation: | Grab samples collected between February and September of 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | There was no quality assurance information with this data. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Mark West Creek, Sonoma County. | ||||
|
|||||
| LOE ID: | 47201 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | The following process is utilized to interpret the narrative Temperature Objective in the Basin Plan for impairment assessments. Step 1: determine if temperatures reflect natural conditions. If Yes, then the water body is not considered impaired, if No, Then go to Step 2. Step 2: Determine if temperatures adversely affect beneficial uses. If Yes, then the water body is considered impaired, if No, then go to Step 3. Step 3: Determine if temperatures are increased by 5 degrees F. If Yes, then water body is impaired, if No, then water body is not impaired. | ||||
| Data Reference: | Presentation: Interpreting Temperature Standards in the North Coast Region. North Coast Regional Water Quality Control Board. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses. At no time or place shall the temperature of any COLD water be increased more than 5 degrees Fahrenheit (F) above natural receiving water temperature. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) for the North Coast Region | ||||
| Evaluation Guideline: | EVIDENCE OF ALTERATION OF NATURAL RECEIVING WATER TEMPERATURES (NON-NATURAL TEMPS): The water temperatures of Mark West Creek do not reflect natural conditions as the environmental factors that influence water temperature have been altered by human activities. Examples of human alteration include stream flow changes resulting from water diversions and grazing activities which have created streambank erosion and inhibited the growth of riparian vegetation (CDFG 2006; Sotoyome RCD 2008). These factors, along with other human activities, have resulted in altered stream temperatures in Mark West Creek. EVIDENCE OF SALMONID PRESENCE & LIFE CYCLE USE: Coho and Steelhead present in Mark West Creek (Sotoyome 2008). Spawning occurs December-April and rearing occurs year round (Steiner Environmental Consulting 1996). | ||||
| Guideline Reference: | A History of the Salmonid Decline in the Russian River. | ||||
| Upper Mark West Watershed Management Plan Phase 1: Watershed Characterization and Needs Assessment | |||||
| California Department of Fish and Game Stream Inventory Report: Mark West Creek (Report Revised April 14, 2006) Report Completed 2000 Assessment Completed 1996. | |||||
| Spatial Representation: | Information pertains to Russian River HU, Middle Russian River HA, Mark West Creek HSA, mainstem Mark West Creek. | ||||
| Temporal Representation: | Data are reflective of current conditions in this water body. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Information is considered to be of adequate quality for the Integrated Report. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
31972 |
Region 1 |
Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa |
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| Pollutant: | Indicator Bacteria |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | The data included in this decision were originally assessed under the "Russian River HU, Middle Russian River HA, Mark West Creek HSA" water body (Decision 13365).
The "Russian River HU, Middle Russian River HA, Mark West Creek HSA" water body has been split into four water bodies for the current Integrated Report cycle: (1) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa, (2) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa, (3) Russian River HU, Middle Russian River HA, Mark West HSA, tributaries to Mark West Creek (except Windsor Creek and its tributaries), and (4) Russian River HU, Middle Russian River HA, Mark West HSA, Windsor Creek and its tributaries. LOEs 47183 and 47184 are copies of the original 2010 LOEs 7076 and 7068 respectively. Although there are no new data for this water segment-pollutant combination for the current Integrated Report cycle, the decision information has changed since the 2010 Integrated Report to reflect that total coliform data are not utilized in this decision as they are widespread in nature and occur in non-fecal sources such as soil and submerged wood. Fecal indicator bacteria (which includes Escherichia coli [E. Coli]) are being considered for placement on the Section 303(d) list under Section 3.2 of the Listing Policy. Under this section a single line of evidence (LOE) is necessary to assess listing status. One line of evidence for E. Coli is available in the administrative record to assess fecal indicator bacteria. In accordance with Section 3.3 of the Listing Policy, a 4% exceedance rate shall be used to add waters to the List "if water quality monitoring was conducted April 1 through October 31 only". However, data in this decision were collected including months outside the April 1 through October 31 range, and therefore are assessed under Section 3.2 of the Listing Policy at a 10% exceedance rate. 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 to the Section 303(d) list (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfy the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfy the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of 2 E. Coli samples exceed the criteria and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met under Section 3.2 as there must be a minimum of either (A) 26 samples, or (B) greater than or equal 5 exceedances of the objective with less than 26 samples is needed for application of Table 3.2. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | 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 it cannot be determined if applicable water quality standards are not being exceeded. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 47183 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | None of the 2 E. coli samples from Mark West Creek exceed the evaluation guideline. Sample concentrations range from 19 to 124 MPN / 100 ml. The samples were collected by the Community Clean Water Institute (CCWI 2006; CCWI 2007). | ||||
| Data Reference: | Community Clean Water Institute Master Data for 2005. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | ||||
| Community Clean Water Institute Master Data for 2006. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1) | ||||
| Evaluation Guideline: | Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units. | ||||
| Guideline Reference: | Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health. | ||||
| Spatial Representation: | Samples were collected from Mark West Creek near the second intersection of Deerwood Drive and Hop Ranch Road, approximately 1/4 mile downstream from the Old Redwood Highway bridge. | ||||
| Temporal Representation: | The samples were collected on May 13, 2005, and February 24, 2006. | ||||
| Environmental Conditions: | There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data. | ||||
| QAPP Information: | The samples were collected in accordance the "Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods" (CCWI 2007). | ||||
| QAPP Information Reference(s): | Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods. Updated April 12, 2007 | ||||
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| LOE ID: | 47184 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | None of the 2 total coliform samples collected from the Mark West Creek exceed the evaluation guideline. The sample concentrations ranged from 311 to 1,931 MPN / 100 ml. The samples were collected by the Community Clean Water Institute (CCWI 2006; CCWI 2007). | ||||
| Data Reference: | Community Clean Water Institute Master Data for 2005. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | ||||
| Community Clean Water Institute Master Data for 2006. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1) | ||||
| Evaluation Guideline: | Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. *Note: MPN is the most probable number of coliform units. | ||||
| Guideline Reference: | Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health. | ||||
| Spatial Representation: | The samples were collected from the Mark West Creek near the second intersection of Deerwood Drive and Hop Ranch Road, approximately 1/4 mile downstream from the Old Redwood Highway bridge. | ||||
| Temporal Representation: | The samples were collected on May 13, 2005 and February 24, 2006. | ||||
| Environmental Conditions: | There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data. | ||||
| QAPP Information: | The samples were collected in accordance with the "Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods" (CCWI 2007). | ||||
| QAPP Information Reference(s): | Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods. Updated April 12, 2007 | ||||
DECISION ID |
31975 |
Region 1 |
Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa |
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| 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: | Data included in this decision were originally assessed under the "Russian River HU, Middle Russian River HA, Mark West Creek HSA" water body has been split into four water bodies for the current Integrated Report cycle: (1) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa, (2) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa, (3) Russian River HU, Middle Russian River HA, Mark West HSA, tributaries to Mark West Creek (except Windsor Creek and its tributaries), and (4) Russian River HU, Middle Russian River HA, Mark West HSA, Windsor Creek and its tributaries.
LOE 47203 is new for this current Integrated Report cycle. LOE LOE 47414 and LOE 47186 replace LOE 8989 from the 2010 Integrated Report cycle. The information from the original LOE has been split into two LOEs in order to assess data for the mainstem of Mark West Creek below the confluence with the Laguna de Santa Rosa in a separate LOE from data for the mainstem Mark West Creek upstream of the confluence. LOE 47186 is assessed under the "Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa" water body, and LOE 47425 is assessed under this water body. 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. Two lines of evidence are available in the administrative record to assess this pollutant. 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 (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) None of the 78 samples exceed the water quality objective, 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 Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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| LOE ID: | 47203 | ||||
| Pollutant: | Nitrate | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 41 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | None of the 41 samples exceed the water quality objective for Nitrate (as N). | ||||
| Data Reference: | Data for Water Quality in Mark West Creek, 2004-2009. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, North Coast Basin: Waters designated for MUN shall not contain concentrations of chemical constituents in excess of the MCL specified in Title 22 of the California Code of Regulations. The nitrate (as N) is 10 mg/L. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) for the North Coast Region | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected at Mark West Creek 095 (5515 St. Helena Road, Santa Rosa, in Sonoma County). | ||||
| Temporal Representation: | Samples were collected from 11/29/04 to 9/3/2008 and from 6/12/2009 to 10/13/2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | No quality assurance information was provided. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Mark West Creek, Sonoma County. | ||||
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| LOE ID: | 47414 | ||||
| Pollutant: | Nitrate | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 37 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | None of the 37 nitrate as nitrogen samples collected in Mark West Creek exceeded the objective. The sample concentrations range from non-detect (detection limits of 0.02 mg/L - 0.04 mg/L) to 0.74 mg/L. These samples were collected by the Community Clean Water Institutes Volunteer Water Quality Monitoring Program (CCWI 2005, CCWI 2006, CCWI 2007). This LOE and LOE 47186 replace LOE 8989 from the 2010 Integrated Report cycle. The data were re-assessed in order to (1) update the criteria for the MCL to 10 mg/L and (2) assess data for the mainstem Mark West Creek above the confluence with the Laguna de Santa Rosa in its own, separate LOE. | ||||
| Data Reference: | Community Clean Water Institute Master Data for 2005. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | ||||
| Community Clean Water Institute Master Data for 2006. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | |||||
| Community Clean Water Institute Master Data for 2004. Downloaded from http://ccwi.org/issues/data.htm on October 1, 2008 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Per the Basin Plan (NCRWQCB 2011): The MCL for nitrate as nitrogen is 10 mg/L. | ||||
| Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from 2 locations in the mainstem of Mark West Creek as follows: (1) near the second intersection of Deerwood Drive and Hop Ranch Road, 1/4 mile downstream from the bridge at Old Redwood Highway; and (24) at 5515 St. Helena Road. | ||||
| Temporal Representation: | The samples were collected from March 2004 to June 2006. | ||||
| Environmental Conditions: | There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data. | ||||
| QAPP Information: | Samples were collected in accordance with the "Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods" (CCWI 2007). At each site a grab sample was collected using a container on a pole or by a bucket attached to a rope. The samples were then put into sterilized Whirl Pak bags, put into coolers on ice, and brought to the lab for analysis. | ||||
| QAPP Information Reference(s): | Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods. Updated April 12, 2007 | ||||
DECISION ID |
31977 |
Region 1 |
Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa |
||
| Pollutant: | Oxygen, Dissolved |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Data included in this decision were originally assessed under the "Russian River HU, Middle Russian River HA, Mark West Creek HSA" water body, which has been split into four water bodies for the current Integrated Report cycle: (1) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa, (2) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa, (3) Russian River HU, Middle Russian River HA, Mark West HSA, tributaries to Mark West Creek (except Windsor Creek and its tributaries), and (4) Russian River HU, Middle Russian River HA, Mark West HSA, Windsor Creek and its tributaries.
LOEs 47187 and 47188 replace LOE 8988 from the 2010 Integrated Report cycle. Data from the original LOE were split into two LOEs in order to assess data for the mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa in a separate LOE from data for the mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa. LOE 47187 is assessed under this water body, and LOE 47188 is assessed under the "Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa" water body. LOE 47229 is new for the current Integrated Report cycle. 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. 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 (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Seven of 49 samples exceed the water quality objective used to protect the COLD beneficial use and one of 21 samples exceed the objective used to protect the SPWN beneficial use. These sample sizes do 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 Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
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| LOE ID: | 47187 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 49 | ||||
| Number of Exceedances: | 7 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Seven of the 49 samples collected in Mark West Creek above the confluence with the Laguna exceeded the minimum DO water quality objective. Data were divided into two categories, 1) no spawning, incubation, and emergence occurring and 2) spawning, incubation, and emergence occurring. Presence and absence of salmonid species was determined by utilizing CDFG map (Brooks 2002). Timing of spawning, incubation, and emergence was determined utilizing Steiner Environmental Consulting (1996). The DO values when no spawning, incubation, and emergence ranged from 63.3 mg/L to 23.5 mg/L (4 exceedences of the objective). DO values during times of spawning, incubation, and emergence ranged from 7.2 mg/L to 15.3 mg/L (3 exceedence of the objective). This LOE and LOE 47188 replace LOE 8988. | ||||
| Data Reference: | Community Clean Water Institute Master Data for 2005. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | ||||
| Community Clean Water Institute Master Data for 2006. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | |||||
| Community Clean Water Institute Master Data for 2004. Downloaded from http://ccwi.org/issues/data.htm on October 1, 2008 | |||||
| Map of Historical Salmonid Streams and Calwater 2.2a Hydrologic Sub-Areas. California Department of Fish and Game, Central Coast Region. IHRMP North Coast GIS Lab. Hopland, CA | |||||
| A History of the Salmonid Decline in the Russian River. | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Dissolved oxygen concentrations for waters not listed in Table 3-1, and where dissolved oxygen objectives are not prescribed, shall not be reduced below 6.0 mg/L for waters designated as COLD and shall not be reduced below 9.0 mg/L for waters designated as SPWN during critical spawning and egg incubation periods. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) for the North Coast Region | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from 3 locations in the mainstem of Mark West Creek above the confluence with the Laguna de Santa Rosa at sites MWC040, MWC095, and MWC150. | ||||
| Temporal Representation: | The DO samples were collected from March 2004 to December 2006. The DO samples were collected as instantaneous values and do not represent diurnal conditions. | ||||
| Environmental Conditions: | There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data. | ||||
| QAPP Information: | Samples were collected in accordance with the "Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods" (CCWI 2007). | ||||
| QAPP Information Reference(s): | Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods. Updated April 12, 2007 | ||||
|
|||||
| LOE ID: | 47229 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Fish Spawning | ||||
| Number of Samples: | 21 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | One of the 21 daily minimum values for Dissolved Oxygen exceeded the objective. | ||||
| Data Reference: | Data for Water Quality in Mark West Creek, 2004-2009. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Per the Basin Plan (NCRWQCB 2011): Dissolved oxygen concentrations for waters not listed in Table 3-1, and where dissolved oxygen objectives are not prescribed, shall not be reduced below 7.0 mg/L for waters designated as SPWN. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) for the North Coast Region | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from the HBG020, MWC070, MWC090 stations. | ||||
| Temporal Representation: | Samples were collected approximately twice a month from February 2009 to September 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | No QA information was provided for this data set. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Mark West Creek, Sonoma County. | ||||
DECISION ID |
31978 |
Region 1 |
Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa |
||
| Pollutant: | Phosphorus |
| 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: | Data included in this decision were originally assessed under the "Russian River HU, Middle Russian River HA, Mark West Creek HSA" water body has been split into four water bodies for the current Integrated Report cycle: (1) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa, (2) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa, (3) Russian River HU, Middle Russian River HA, Mark West HSA, tributaries to Mark West Creek (except Windsor Creek and its tributaries), and (4) Russian River HU, Middle Russian River HA, Mark West HSA, Windsor Creek and its tributaries.
LOE 47425 and LOE 47190 replace LOE 9039 from the 2010 Integrated Report cycle. The information from the original LOE has been split into two LOEs in order to assess data for the mainstem of Mark West Creek below the confluence with the Laguna de Santa Rosa in a separate LOE from data for the mainstem Mark West Creek upstream of the confluence. LOE 47190 is assessed under the "Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa" water body, and LOE 47425 is assessed under this water body. 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. One line of evidence is available in the administrative record to assess this pollutant. It is unknown if any of the phosphorus samples exceed the water quality objective as there is insufficient information available to determine exceedance. Specifically, the samples cannot be compared to the objective because diel samples for dissolved oxygen (DO), pH, and/or chlorophyll-a are not available. Nutrients such as phosphorus do not impair beneficial uses by themselves, or cause non-attainment of the objective. Rather, they cause indirect impacts through algal growth and extreme diel patterns for DO and pH, which then impair uses. Waterbody-specific factors such as riparian cover, flow conditions, and stream channel configuration also affect how nutrients are processed within the stream and play a large role in determining whether or not nuisance algal conditions will prevail. For these reasons, comparing a single nutrient value to the biostimulatory objective is not recommended. Instead, nutrient-related indicator parameters, such as diel measurements of DO, pH, and/or chlorophyll-a, should be evaluated to determine attainment of the objective and protection of beneficial uses. When nutrient-related indicator parameters exceed targets, nutrient concentrations will then be analyzed to determine whether phosphorus should be added to a possible listing under the 303(d) List. Therefore, the weight of evidence indicates that there is insufficient information available to determine if it is appropriate to place this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category. This conclusion is also 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) 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 Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 47425 | ||||
| Pollutant: | Phosphorus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | It is unknown whether any of the 37 phosphorus samples collected in Mark West Creek above the confluence with the Laguna de Santa Rosa exceed the objective as there is insufficient information available to determine exceedance. Specifically, the samples cannot be compared to the objective because diel samples for dissolved oxygen (DO), pH, and/or chlorophyll-a are not available. Nutrients, such as phosphorus, alone do not impair beneficial uses or cause non-attainment of the objective. Rather, they cause indirect impacts through algal growth and extreme diel patterns for DO and pH, which then impair uses. Waterbody-specific factors such as riparian cover, flow conditions, and stream channel configuration also affect how nutrients are processed within the stream and play a large role in determining whether or not nuisance algal conditions will prevail. For these reasons, comparing a single nutrient value to the biostimulatory objective is not recommended. Instead, nutrient-related indicator parameters, such as diel measurements of DO, pH, and/or chlorophyll-a, should be evaluated to determine attainment of the objective and protection of beneficial uses. When nutrient-related indicator parameters exceed targets, nutrient concentrations will then be analyzed to determine whether phosphorus should be added to a possible listing under the 303(d) List. The sample concentrations range from non-detect (reporting limits of 0.03 mg/L and 0.1 mg/L) to 0.33 mg/L. These samples were collected by the Community Clean Water Institutes Volunteer Water Quality Monitoring Program (CCWI 2005, CCWI 2006, and CCWI 2007). This LOE and LOE 47190 replace LOE 9039 from the 2010 Integrated Report cycle. The information from the original LOE has been split into two LOEs in order to assess data for the mainstem of Mark West Creek below the confluence with the Laguna de Santa Rosa in a separate LOE from data for the mainstem Mark West Creek upstream of the confluence. | ||||
| Data Reference: | Community Clean Water Institute Master Data for 2005. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | ||||
| Community Clean Water Institute Master Data for 2006. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | |||||
| Community Clean Water Institute Master Data for 2004. Downloaded from http://ccwi.org/issues/data.htm on October 1, 2008 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Per the Basin Plan (NCRWQCB 2007): Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from 2 locations in the mainstem of Mark West Creek above the confluence with the Laguna de Santa Rosa as follows: (1) near the second intersection of Deerwood Drive and Hop Ranch Road, 1/4 mile downstream from the bridge at Old Redwood Highway; and (2) at 5515 St. Helena Road. | ||||
| Temporal Representation: | The samples were collected from March 2004 to June 2006. | ||||
| Environmental Conditions: | There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data. | ||||
| QAPP Information: | Samples were collected in accordance with the "Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods" (CCWI 2007). | ||||
| QAPP Information Reference(s): | Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods. Updated April 12, 2007 | ||||
DECISION ID |
31987 |
Region 1 |
Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa |
||
| 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: | The "Russian River HU, Middle Russian River HA, Mark West Creek HSA" water body has been split into four water bodies for the current Integrated Report cycle: (1) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa, (2) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa, (3) Russian River HU, Middle Russian River HA, Mark West HSA, tributaries to Mark West Creek (except Windsor Creek and its tributaries), and (4) Russian River HU, Middle Russian River HA, Mark West HSA, Windsor Creek and its tributaries.
LOEs 47199 and 47200 replace LOE 8987 from the 2010 Integrated Report cycle. Data from the original LOE were split into two LOEs in order to assess data for the mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa in a separate LOE from data for the mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa. LOE 47199 is assessed under this water body, and LOE 47200 is assessed under the "Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa" water body. 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. One line of evidence is available in the administrative record to assess this pollutant. 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 (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) One of 47 pH samples exceed the water quality objective, and this does not exceed the allowable frequency of 8 per the binomial distribution described in Section 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 Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 47199 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 47 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | One of the Forty-seven (47) samples collected in the mainstem of Mark West Creek above the confluence with the Laguna violated the pH water quality objective. Sample values ranged from 7.3 to 8.9. This LOE and LOE 31496 replaces LOE 8987. | ||||
| Data Reference: | Community Clean Water Institute Master Data for 2005. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | ||||
| Community Clean Water Institute Master Data for 2006. Downloaded from http://ccwi.org/issues/data.htm on August 25, 2008 | |||||
| Community Clean Water Institute Master Data for 2004. Downloaded from http://ccwi.org/issues/data.htm on October 1, 2008 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, North Coast Region (NCRWQCB 2011): The maximum pH objective is 8.5. The minimum pH objective is 6.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) for the North Coast Region | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from 3 locations in the mainstem of Mark West Creek above the confluence with the Laguna de Santa Rosa at sites MWC040, MWC095, and MWC150. | ||||
| Temporal Representation: | Grab samples were collected from March 2004 to December 2006. | ||||
| Environmental Conditions: | There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data. | ||||
| QAPP Information: | Samples were collected in accordance with the "Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods" (CCWI 2007). | ||||
| QAPP Information Reference(s): | Community Clean Water Institute Volunteer Water Quality Monitoring Program Sampling and Analysis Methods. Updated April 12, 2007 | ||||
DECISION ID |
31979 |
Region 1 |
Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa |
||
| Pollutant: | Sedimentation/Siltation |
| Final Listing Decision: | List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Sources: | Flow Alteration/Regulation/Modification | Removal of Riparian Vegetation | Streambank Modification/Destabilization |
| Expected TMDL Completion Date: | 2025 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | The "Russian River HU, Middle Russian River HA, Mark West Creek HSA" water body has been split into four water bodies for the current Integrated Report cycle: (1) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek downstream of the confluence with the Laguna de Santa Rosa, (2) Russian River HU, Middle Russian River HA, Mark West HSA, mainstem Mark West Creek upstream of the confluence with the Laguna de Santa Rosa, (3) Russian River HU, Middle Russian River HA, Mark West HSA, tributaries to Mark West Creek (except Windsor Creek and its tributaries), and (4) Russian River HU, Middle Russian River HA, Mark West HSA, Windsor Creek and its tributaries.
LOE 47191 is a copy of placeholder LOE 4769 from the 2006 Listing cycle. There are no new data for this water segment-pollutant combination for the current Integrated Report cycle. Regional Water Board conclusion: This pollutant was considered for placement on the section 303(d) List in a previous Integrated Report cycle. No new information was reviewed for this current Integrated Report cycle. Therefore, the previous conclusion remains unchanged, and is as follows: 303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed. |
| Regional Board Decision Recommendation: | No new data were assessed for this assessment cycle. The conclusion reached in the previous cycle remains the same. The Regional Board will update this decision when new data and information become available in a future assessment cycle. |
| State Board Staff Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 47191 | ||||
| Pollutant: | Sedimentation/Siltation | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
| Data Reference: | Placeholder reference pre-2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | |||||
| Temporal Representation: | |||||
| Environmental Conditions: | |||||
| QAPP Information: | unspecified | ||||
| QAPP Information Reference(s): | |||||