| Water Body Name: | Ward Creek |
| Water Body ID: | CAR6342002019980805120910 |
| Water Body Type: | River & Stream |
DECISION ID |
20141 |
Region 6 |
Ward Creek |
||
| Pollutant: | Nitrogen |
| Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2010) |
| Revision Status | Revised |
| Sources: | Source Unknown |
| TMDL Name: | Lake Tahoe Nutrients/Sediment |
| TMDL Project Code: | 198 |
| Date TMDL Approved by USEPA: | 08/16/2011 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Staff Conclusion: | This pollutant was considered for placement on the section 303 (d) list in a previous listing cycle. 303(d) listing decisions made prior to 2006 were not held in an assessment database.
Regional Board conclusion: No new information was reviewed for this current assessment cycle, however; the previous conclusion has changed since the Lake Tahoe TMDL, which partly addresses the nitrogen impairment within this segment of Ward Creek, was adopted after the 2010 Integrated Report. Ward Creek is a tributary to Lake Tahoe. On-the-ground efforts required by the Lake Tahoe TMDL will also achieve pollutant load reductions in waters tributary to Lake Tahoe, including Ward Creek. The largest source of nitrogen in the Lake Tahoe (and Ward Creek) watershed is transportation-related emissions that lead to atmospheric nitrogen deposition. The Lake Tahoe TMDL includes implementation measures to reduce atmospheric nitrogen sources. The TMDL relies on the Tahoe Regional Planning Agency to lead efforts to improve transportation infrastructure and reduce overall vehicle miles traveled in the Lake Tahoe region to reduce emissions that lead to atmospheric nutrient loading. Public transit and vehicle fleet turnover are expected to further reduce nutrient-laden emissions in the Tahoe basin that will reduce nitrogen loading in the Ward Creek watershed. Furthermore, Federal, State, and larger local restoration agencies have well defined multi objective watershed restoration programs to address historic disturbances to Lake Tahoe tributary stream channels. Implementation of the California Department of Parks and Recreation 2011 Ward Creek Roads and Trails Sediment Reduction Project (WDID No. 6A311008004) has and continues to reduce inputs of fine sediments and nutrients to Ward Creek associated with the trail system within the Ward Creek watershed. The Project has reduced impacts of the trail system on the wet meadow, lower Ward Creek watershed, and Lake Tahoe by a combination of improving drainage and re-routing and re-contouring trails, restoring old road beds, and de-compacting abandoned trails. Restored wet meadow areas received permanent structures to divert runoff and mulch cover to provide erosion control and a seed source. Maintenance activities, including fuels reduction and restoration of small disturbed sites that are underway, or planned and expected, within the forested uplands of this watershed will also reduce or avoid increases in fine sediment and nutrient loads . Pollutant loads from urbanized portions of the Ward Creek watershed are being address by the Lake Tahoe TMDL. Municipal Stormwater NPDES permits require the Lake Tahoe municipalities and CalTrans to develop and implement comprehensive pollutant load reduction programs (PLRPs) to meet specified pollutant load reduction requirements. Expected implementation measures include a variety of alternative treatment options, roadway operation practices, and local ordinances to reduce average annual pollutant loads. These Lake Tahoe TMDL implementation efforts will also reduce inputs of phosphorus to this impaired segment of the Ward Creek. Pollutant load reductions within Ward Creek will be tracked through implementation of detailed performance and compliance measures and assessment and reporting protocols included in the Lake Tahoe TMDL. The TMDL Management System project is establishing activity-based tracking and reporting requirements to assess activities that are expected to reduce pollutant loading from non-urban sources. The Lahontan Water Board and the Nevada Division of Environmental Protection will implement a Lake Tahoe TMDL Management System for managing, tracking, integrating and evaluating new information generated from TMDL implementation actions, effectiveness monitoring, research efforts, and other factors such as climate change and wildfires. The Management System is based on an adaptive management framework to (1) link load reduction effectiveness with project implementation monitoring to improve project design and to assess if actual environmental improvement is occurring as expected; (2) establish guidance and operation protocols for how new information will be incorporated into project designs and TMDL program implementation; (3) establish prioritized TMDL research needs to fill data gaps and reduce uncertainties, and (4) implement a process for updating and reporting pollutant load reduction estimates and tracking projects within the TMDL implementation timeline. The Lake Tahoe TMDL requires implementation, effectiveness, and status and trends monitoring. Tributary stream status and trends monitoring will track long-term changes in water quality conditions relative to established water quality standards or goals, and project-specific monitoring will be used to assess the efficacy of various implementation measures. Long-term water quality trends and pollutant load reduction tracking in Ward Creek will be captured through the ongoing efforts of the Lake Tahoe Interagency Monitoring Program (LTIMP) whose primary objective is to monitor discharge, nutrient load, and sediment loads from representative streams that flow into Lake Tahoe. Nitrogen and phosphorus loading calculations are performed using the LTIMP flow and nutrient concentration database. LTIMP has monitored Ward Creek and other tributaries to Lake Tahoe since 1988; this data is stored on the USGS website at http://wdr.water.usgs.gov/. |
| Regional Board Staff Decision Recommendation: | No new data were assessed for this assessment cycle. 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. However, the final listing decision for this waterbody pollutant combination has changed for this listing cycle to "being addressed by a USEPA approved TMDL." This waterbody pollutant combination has been and continues to be addressed by implementation of the Lake Tahoe TMDL, which was approved by the USEPA on August 16, 2011. |
|
|||||
| LOE ID: | 4660 | ||||
| Pollutant: | Nitrogen | ||||
| 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: | Not Specified | ||||
| Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
| Data Reference: | Placeholder reference pre-2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Unspecified | ||||
| Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) | ||||
| Evaluation Guideline: | Unspecified | ||||
| Guideline Reference: | Placeholder reference pre-2006 303(d) | ||||
| Spatial Representation: | Unspecified | ||||
| Temporal Representation: | Unspecified | ||||
| Environmental Conditions: | Unspecified | ||||
| QAPP Information: | Unspecified | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
27275 |
Region 6 |
Ward Creek |
||
| Pollutant: | Phosphorus |
| Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2010) |
| Revision Status | Revised |
| Sources: | Source Unknown |
| TMDL Name: | Lake Tahoe Nutrients/Sediment |
| TMDL Project Code: | 198 |
| Date TMDL Approved by USEPA: | 08/16/2011 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Staff Conclusion: | This pollutant was considered for placement on the section 303 (d) list in a previous listing cycle. 303(d) listing decisions made prior to 2006 were not held in an assessment database.
Regional Board conclusion: No new information was reviewed for this current assessment cycle; however, the previous conclusion has changed since the Lake Tahoe TMDL, which partly addresses the phosphorus impairment within this segment of Ward Creek, was adopted after the 2010 Integrated Report. Ward Creek is tributary to Lake Tahoe. On-the-ground efforts required by the Lake Tahoe TMDL will also achieve pollutant load reductions in waters tributary to Lake Tahoe, including Ward Creek. The primary source of phosphorus in Lake Tahoe (and Ward Creek) watershed is urban storm water runoff and phosphorus associated with eroding sediment on disturbed undeveloped lands. Tahoe TMDL implementation plan identifies actions resource management agencies, Lake Tahoe municipalities (El Dorado and Placer Counties, and City of South Lake Tahoe) and California Department of Transportation (CalTrans) must take to reduce inputs of nutrients (nitrogen and phosphorus) and fine sediment in urban runoff discharges. On the ground efforts required by the Lake Tahoe TMDL that focus on (1) stabilizing disturbed areas within the forested uplands, (2) restoring eroding stream channels, and (3) managing and treating urban uplands (e.g. street sweeping, installing and maintaining infiltration and stormwater treatment facilities) will also achieve pollutant load reductions in waters tributary to Lake Tahoe. Pollutant loads from urban uplands within the Ward Creek watershed are being address by the Lake Tahoe TMDL. Municipal Stormwater NPDES permits require Lake Tahoe municipalities and CalTrans to develop and implement comprehensive pollutant load reduction programs (PLRPs) to meet specified pollutant load reduction requirements. Expected implementation measures include alternative treatment options, roadway operation practices, and local ordinances to reduce average annual pollutant loads. These Lake Tahoe TMDL implementation efforts will also reduce inputs of phosphorus to this impaired segment of Ward Creek. Maintenance activities and restoring small disturbed sites that are underway, or planned and expected, within the forested uplands of this watershed will also reduce or avoid increases in fine sediment and nutrient loads. Additionally, the Lake Tahoe TMDL also requires implementation of measures to control stationary sources of dust which help reduce pollutant loads of fine sediments. Implementation of these measures helps address the phosphorus loading that impairs Ward Creek that is associated with fine sediments from dust sources. Federal, State, and larger local restoration agencies have well defined multi objective restoration programs with established funding and developed restoration plans, which will help reduce the phosphorus loads that impact the Ward Creek. Implementation of the California Department of Parks and Recreation 2011 Ward Creek Roads and Trails Sediment Reduction Project (WDID No. 6A311008004) has and continues to reduce inputs of fine sediments and phosphorus to Ward Creek associated with the trail system within the Ward Creek watershed. The Project has reduced impacts of the trail system on the wet meadow, lower Ward Creek watershed, and Lake Tahoe by a combination of improving drainage and re-routing and re-contouring trails, restoring old road beds, and de-compacting abandoned trails. Restored wet meadow areas received permanent structures to divert runoff and mulch cover to provide erosion control and a seed source. Finally, the Lake Tahoe TMDL also requires implementation of measures to control stationary sources of dust and organic soot which help reduce pollutant loads of fine sediments. Implementation of these measures helps address the phosphorus loading (associated with these fine sediments from dust sources) that impairs Ward Creek. Pollutant load reductions within Ward Creek will be tracked through implementation of detailed performance and compliance measures and assessment and reporting protocols included in the Lake Tahoe TMDL. The TMDL Management System project is establishing activity-based tracking and reporting requirements to assess activities that are expected to reduce pollutant loading from non-urban sources. The Lahontan Water Board and the Nevada Division of Environmental Protection will implement a Lake Tahoe TMDL Management System for managing, tracking, integrating and evaluating new information generated from TMDL implementation actions, effectiveness monitoring, research efforts, and other factors such as climate change and wildfires. The Management System is based on an adaptive management framework to (1) link load reduction effectiveness with project implementation monitoring to improve project design and to assess if actual environmental improvement is occurring as expected; (2) establish guidance and operation protocols for how new information will be incorporated into project designs and TMDL program implementation; (3) establish prioritized TMDL research needs to fill data gaps and reduce uncertainties, and (4) implement a process for updating and reporting pollutant load reduction estimates and tracking projects within the TMDL implementation timeline. The Lake Tahoe TMDL requires implementation, effectiveness, and status and trends monitoring. Tributary stream status and trends monitoring will track long-term changes in water quality conditions relative to established water quality standards or goals, and project-specific monitoring will be used to assess the efficacy of various implementation measures. Long-term water quality trends and pollutant load reduction tracking in Ward Creek will be captured through the ongoing efforts of the Lake Tahoe Interagency Monitoring Program (LTIMP) whose primary objective is to monitor discharge, nutrient load, and sediment loads from representative streams that flow into Lake Tahoe. Nitrogen and phosphorus loading calculations are performed using the LTIMP flow and nutrient concentration database. LTIMP has monitored Ward Creek and other tributaries to Lake Tahoe since 1988; this data is stored on the USGS website at http://wdr.water.usgs.gov/. |
| Regional Board Staff Decision Recommendation: | No new data were assessed for this assessment cycle. 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. However, the final listing decision for this waterbody pollutant combination has changed for this listing cycle to "being addressed by a USEPA approved TMDL." This waterbody pollutant combination has been and continues to be addressed by implementation of the Lake Tahoe TMDL, which was approved by the USEPA on August 16, 2011. |
|
|||||
| LOE ID: | 4661 | ||||
| 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: | Not Specified | ||||
| Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
| Data Reference: | Placeholder reference pre-2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Unspecified | ||||
| Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) | ||||
| Evaluation Guideline: | Unspecified | ||||
| Guideline Reference: | Placeholder reference pre-2006 303(d) | ||||
| Spatial Representation: | Unspecified | ||||
| Temporal Representation: | Unspecified | ||||
| Environmental Conditions: | Unspecified | ||||
| QAPP Information: | Unspecified | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
20140 |
Region 6 |
Ward Creek |
||
| Pollutant: | Iron |
| Final Listing Decision: | List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2010) |
| Revision Status | Original |
| Sources: | Channel Erosion | Erosion/Siltation | Highway Maintenance and Runoff | Natural Sources | Other Urban Runoff | Silviculture |
| Expected TMDL Completion Date: | 2015 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Staff Conclusion: | Regional Board Conclusion:
This pollutant was considered for placement on the section 303(d) list in a previous assessment cycle. No new information was reviewed for this current assessment 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 Staff Decision Recommendation: | No new data were assessed for this assessment cycle. The conclusion reached in the previous cycle remains in same. The Regional Board will update this decision when new data and information become available in a future assessment cycle. |
|
|||||
| LOE ID: | 4659 | ||||
| Pollutant: | Iron | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
| Data Reference: | Placeholder reference pre-2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Unspecified | ||||
| Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) | ||||
| Evaluation Guideline: | Unspecified | ||||
| Guideline Reference: | Placeholder reference pre-2006 303(d) | ||||
| Spatial Representation: | Unspecified | ||||
| Temporal Representation: | Unspecified | ||||
| Environmental Conditions: | Unspecified | ||||
| QAPP Information: | Unspecified | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
20142 |
Region 6 |
Ward Creek |
||
| Pollutant: | Sedimentation/Siltation |
| Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2010) |
| Revision Status | Original |
| Sources: | Source Unknown |
| TMDL Name: | Lake Tahoe Nutrients/Sediment |
| TMDL Project Code: | 198 |
| Date TMDL Approved by USEPA: | 08/16/2011 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Staff Conclusion: | This pollutant was considered for placement on the section 303 (d) list in a previous listing cycle. 303(d) listing decisions made prior to 2006 were not held in an assessment database.
Regional Board conclusion: No new data were assessed for this assessment cycle, however; the final listing decision has changed since the Lake Tahoe TMDL, which partly addresses the sediment impairment within Ward Creek, was adopted after the 2010 Integrated Report. Ward Creek is a tributary to Lake Tahoe. On-the-ground efforts required by the Lake Tahoe TMDL will also achieve pollutant load reductions in waters tributary to Lake Tahoe, including Ward Creek. The primary source of fine sediment particles in the Lake Tahoe (and Ward Creek) watershed is urban storm water runoff and eroding sediment on disturbed undeveloped lands. The Tahoe TMDL implementation plan identifies actions that resource management agencies, Lake Tahoe municipalities (El Dorado and Placer Counties, and the City of South Lake Tahoe) and California Department of Transportation (CalTrans) must take to reduce inputs of nutrients (nitrogen and phosphorus) and fine sediment in urban runoff discharges. On the ground efforts required by the Lake Tahoe TMDL that focus on (1) stabilizing disturbed areas within the forested uplands, (2) restoring eroding stream channels, and (3) managing and treating urban uplands (e.g. street sweeping, installing and maintaining infiltration and stormwater treatment facilities) will also achieve pollutant load reductions in waters tributary to Lake Tahoe. Pollutant loads from urban uplands within the Ward Creek watershed are being address by the Lake Tahoe TMDL. Municipal Stormwater NPDES permits require the Lake Tahoe municipalities and CalTrans to develop and implement comprehensive pollutant load reduction programs (PLRPs) to meet specified pollutant load reduction requirements. Expected implementation measures include a variety of alternative treatment options, roadway operation practices, and local ordinances to reduce average annual pollutant loads. These Lake Tahoe TMDL implementation efforts will also reduce inputs ofsediment to this impaired segment of Ward Creek. Maintenance activities and restoring small disturbed sites that are underway, or planned and expected, within the forested uplands of this watershed will also reduce or avoid increases in fine sediment and nutrient loads. Additionally, the Lake Tahoe TMDL also requires implementation of measures to control stationary sources of dust which help reduce pollutant loads of fine sediments. Implementation of these measures helps address the phosphorus loading that impairs Ward Creek that is associated with these fine sediments from dust sources. Federal, State, and larger local restoration agencies have well defined multi objective restoration programs with established funding and developed restoration plans, which will help reduce the sediment loads that impact the Ward Creek. Implementation of the California Department of Parks and Recreation 2011 Ward Creek Roads and Trails Sediment Reduction Project (WDID No. 6A311008004) has and continues to reduce inputs of fine sediments to Ward Creek associated with the trail system within the Ward Creek watershed. The Project has reduced impacts of the trail system on the wet meadow, lower Ward Creek watershed, and Lake Tahoe by a combination of improving drainage and re-routing and re-contouring trails, restoring old road beds, and de-compacting abandoned trails. Restored wet meadow areas received permanent structures to divert runoff and mulch cover to provide erosion control and a seed source. Finally, the Lake Tahoe TMDL also requires implementation of measures to control stationary sources of dust and organic soot which help reduce pollutant loads of fine sediments. Implementation of these measures helps address the phosphorus loading (associated with these fine sediments from dust sources) that impairs Ward Creek. Pollutant load reductions within Ward Creek will be tracked through implementation of detailed performance and compliance measures and assessment and reporting protocols included in the Lake Tahoe TMDL. The TMDL Management System project is establishing activity-based tracking and reporting requirements to assess activities that are expected to reduce pollutant loading from non-urban sources. The Lahontan Water Board and the Nevada Division of Environmental Protection will implement a Lake Tahoe TMDL Management System for managing, tracking, integrating and evaluating new information generated from TMDL implementation actions, effectiveness monitoring, research efforts, and other factors such as climate change and wildfires. The Management System is based on an adaptive management framework to (1) link load reduction effectiveness with project implementation monitoring to improve project design and to assess if actual environmental improvement is occurring as expected; (2) establish guidance and operation protocols for how new information will be incorporated into project designs and TMDL program implementation; (3) establish prioritized TMDL research needs to fill data gaps and reduce uncertainties, and (4) implement a process for updating and reporting pollutant load reduction estimates and tracking projects within the TMDL implementation timeline. The Lake Tahoe TMDL requires implementation, effectiveness, and status and trends monitoring. Tributary stream status and trends monitoring will track long-term changes in water quality conditions relative to established water quality standards or goals, and project-specific monitoring will be used to assess the efficacy of various implementation measures. Long-term water quality trends and pollutant load reduction tracking in Ward Creek will be captured through the ongoing efforts of the Lake Tahoe Interagency Monitoring Program (LTIMP) whose primary objective is to monitor discharge, nutrient load, and sediment loads from representative streams that flow into Lake Tahoe. LTIMP has monitored Ward Creek and other tributaries to Lake Tahoe since 1988; this data is stored on the USGS website at http://wdr.water.usgs.gov/. |
| Regional Board Staff Decision Recommendation: | No new data were assessed for this assessment cycle. 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. However, the final listing decision for this waterbody pollutant combination has changed for this listing cycle to "being addressed by a USEPA approved TMDL." This waterbody pollutant combination has been and continues to be addressed by implementation of the Lake Tahoe TMDL, which was approved by the USEPA on August 16, 2011. |
|
|||||
| LOE ID: | 4662 | ||||
| Pollutant: | Sedimentation/Siltation | ||||
| 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: | Not Specified | ||||
| Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
| Data Reference: | Placeholder reference pre-2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Unspecified | ||||
| Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) | ||||
| Evaluation Guideline: | Unspecified | ||||
| Guideline Reference: | Placeholder reference pre-2006 303(d) | ||||
| Spatial Representation: | Unspecified | ||||
| Temporal Representation: | Unspecified | ||||
| Environmental Conditions: | Unspecified | ||||
| QAPP Information: | Unspecified | ||||
| QAPP Information Reference(s): | |||||