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Truckee River Water Quality Monitoring Plan

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Truckee River Water Quality Monitoring Plan TRUCKEE RIVER WATER QUALITY MONITORING PLAN Final Plan Prepared for Placer County and the Town of Truckee September 15, 2008 Summer 2004 Lake Tahoe Water Surface Elevation Washoe County, Nevada County, W Washoe a Prosser/Alder Creeks s h o e C o u Glen n kee Town Corridorshire/Union Valley t y , Truc N Trout Creek e v a d a TTOWNOWN OOFF TTRUCKEERUCKEE Juniper Creek NNevadaevada CCountyounty PPlacerlacer CCountyounty Donner/Cold Creeks Martis Creek Cabin C reek TTruckee River r u c k e Deep Creek e R i v e r Pole Creek Deer Creek Silver Creek Squaw Creek Big Chief Corridor Bear Creek LLakeake TTahoeahoe ECOSYSTEM SCIENCE + DESIGN 321 Frederick Street Santa Cruz, California 95062 p 831.426.9119 f 831.421.9023 Hydroikos Ltd. w 2ndnaturellc.com Nichols Consulting Engineers TRUCKEE RIVER WATER QUALITY MONITORING PLAN Placer County and Town of Truckee Table of Contents 1.0 EXECUTIVE SUMMARY 1.1 Purpose………………………………………………………………………………………………… 1-1 1.2 Goals and Objectives…………………………………………………………………………………. 1-2 1.3 Project Area……………………………………………………………………………………………. 1-2 1.4 Spatial Scale of Observations……………………………………………………………………... .. 1-3 1.5 Assessment Types……………………………………………………………………………………. 1-3 1.6 Phased Approach to the TRWQMP…………………………………………………………………. 1-6 1.7 Data Collection and Management Protocols by Assessment Type…………………………… . 1-10 1.8 TRWQMP Data Management and Reporting……………………………………………………. 1-11 1.9 Next Steps and Challenges for the TRWQMP…………………………………………………... 1-11 2.0 TRUCKEE RIVER WATER QUALITY MONITORING PLAN GOALS AND OBJECTIVES 2.1 Role Of Truckee River Water Quality Monitoring Plan .............................................................. 2-1 2.2 Placer County And Town Of Truckee Coordination ................................................................... 2-2 2.3 Regulatory Requirements .......................................................................................................... 2-2 2.4 Stakeholder Considerations ....................................................................................................... 2-6 3.0 PROJECT AREA DESCRIPTION 3.1 Project Area ............................................................................................................................... 3-1 3.2 GIS Sub-watershed Source Area Prioritization ......................................................................... 3-3 3.2.1 GIS Sub-watershed Source Area Prioritization Results ...................................................... 3-3 3.2.2 Sub-watershed Source Area Descriptions .......................................................................... 3-4 3.2.2.1 High Disturbance Sub-watersheds ............................................................................... 3-4 3.2.2.2 Moderate Disturbance Sub-watersheds ....................................................................... 3-7 3.2.2.3 Low Disturbance Sub-watersheds ................................................................................ 3-8 3.3 Stormwater Routing Description ................................................................................................ 3-8 3.3.1 Mapping ............................................................................................................................... 3-8 3.3.1.1 Squaw Creek Sub-watershed ....................................................................................... 3-8 3.3.1.2 Martis Creek Sub-watershed ...................................................................................... 3-10 3.3.1.3 Truckee Town Corridor Sub-watershed ...................................................................... 3-12 3.3.1.4 Bear Creek Sub-watershed ........................................................................................ 3-12 3.3.1.5 Trout Creek Sub-watershed ........................................................................................ 3-15 3.3.1.6 Big Chief Corridor Sub-watershed .............................................................................. 3-15 3.3.1.7 Donner Creek/Cold Creek Sub-watershed ................................................................. 3-18 3.3.2 Summary Of Future Stormwater Mapping Tasks .............................................................. 3-20 3.4 Section 3.0 References ........................................................................................................... 3-22 4.0 DEVELOPMENT OF TECHNICAL APPROACH 4.1 Key Components ....................................................................................................................... 4-1 4.2 Performance Assessment .......................................................................................................... 4-3 4.3 Spatial Areas Of Assessment .................................................................................................... 4-3 4.4 Performance Assessment Types ............................................................................................... 4-4 4.4.1 GIS Sub-watershed Source Area Prioritization ................................................................... 4-5 4.4.2 Rapid Assessment Methodologies ...................................................................................... 4-6 4.4.3 Bioassessments .................................................................................................................. 4-8 4.4.4 Discrete Water Quality Measurements ............................................................................. 4-10 4.4.5 Near-continuous Water Quality Measurements ................................................................ 4-15 4.5 Pollutants Of Concern .............................................................................................................. 4-19 4.5.1 Sediment ........................................................................................................................... 4-20 TRWQMP Final Plan – September 15, 2008 Page i 2NDNATURE, LLC TRUCKEE RIVER WATER QUALITY MONITORING PLAN Placer County and Town of Truckee Table of Contents 4.5.2 Nutrients ............................................................................................................................ 4-22 4.5.2.1 Nitrogen ...................................................................................................................... 4-23 4.5.2.2 Phosphorous ............................................................................................................... 4-25 4.5.3 Hydrocarbons, Trace Metals And Other Pollutants ........................................................... 4-25 4.6 Section 4.0 References ........................................................................................................... 4-27 5.0 SUMMARY OF TRWQMP COMPONENTS 5.1 Phase I ....................................................................................................................................... 5-2 5.2 Phase II .................................................................................................................................... 5-10 5.3 Phase III ................................................................................................................................... 5-19 5.4 Station Selection and Justification (Placer County) ................................................................. 5-19 5.4.1 Martis Creek Sub-watershed ............................................................................................. 5-19 5.4.2 Squaw Creek Sub-watershed ........................................................................................... 5-20 5.4.3 Big Chief Corridor .............................................................................................................. 5-20 5.4.4 Bear Creek Sub-watershed ............................................................................................... 5-21 5.5 Site Selection and Justification (Town of Truckee) .................................................................. 5-21 5.5.1 Truckee Town Corridor ...................................................................................................... 5-21 5.5.2 Donner/Cold Creeks .......................................................................................................... 5-22 5.5.3 Trout Creek ....................................................................................................................... 5-22 5.6 Reference Site Selection and Justification .............................................................................. 5-22 5.7 Strategy for Component Prioritization ...................................................................................... 5-22 5.8 Program Development, Data Management and Reporting ..................................................... 5-23 5.9 15-Year Fiscal Analysis ........................................................................................................... 5-24 6.0 STATION IMPLEMENTATION AND DATA COLLECTION PROTOCOLS 6.1 Permitting Requirements Summary ........................................................................................... 6-2 6.1.1 Agency Requirements ......................................................................................................... 6-2 6.1.2 Landowner Requirements ................................................................................................... 6-4 6.2 GIS Sub-watershed Source Area Prioritization Protocols ......................................................... 6-8 6.2.1 Frequency of Observations ................................................................................................
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