EXH0264019459

PCHBPollution Control Hearings Board of the State of Washington

5.1.1 Characterization of Existing/Expected Water Quality ................................. 5-1 5.1.2 Monitoring of Annual Test Releases from the Flow Impact Offset Facility .......................................................................................................... 5-1 5.1.3 Operational Monitoring ................................................................................ 5-2 5.2 BIOLOGICAL MONITORING ........................................................................ :..... 5-4 5.2.1 B-IBI Sampling Protocol ............................................................................. 5-4 5.2.2 Physical Habitat Monitoring Protocol ......................................................... 5-7 5.3 FILL MONITORING, INFILTRATION BMPS, AND INFILTRATION CONTINGENCY MEASURES .............................................................................. 5-7 5.3.1 Existing Fill Quality Control Testing ........................................................... 5-8 5.3.2 New Infiltration Capacity Testing Protocol for Fill ..................................... 5-8 5.3.3 Fill Infiltration Performance Criterion ....................................................... 5-10 5.3.4 Fill InfilwationBMPs ................................................................................. 5-10 5.3.5 Fill Infilwation Contingency Measures ...................................................... 5-10 5.4 ADAPTIVE MANAGEMENT .............................................................................. 5-11 6. REFERENCES ...................................................................................................................... 6-1 • APPENDICES A HSPF MODELING INFORMATION AND DATA (CONTAINED IN VOLUM_ 2) B EMBANKMENT MODELING REPORT C EMBANKMENT INFILTRATION MEMORANDUM D NON-HYDROLOGIC IMPACTS SUPPORT DATA E HEC-RAS MODELING INFORMATION AND FIELD SURVEY DATA F RESERVE STORMWATER RELEASE STORAGE FACILITIES CONCEPT DRAWINGS G PHYSICAL HABITAT SURVEY AND MONITORING PROTOCOL FOR WADABLE STREAMS H LOW STREAMFLOW FISH BEHAVIOR MEMORANDUM DETER2VILNATIONOF LOW-FLOW QUANTITY IMPACTS AND MITIGATION J HSPF INPUT FILES FOR LOW-FLOW VAULT SIZING Low Streamflow Anal.vs_s December 2001 STIA Master Plan Update Improvements ii 556-2912-001(28B) AR 019461 LIST OF FIGURES " Fi_u-e Page 2-1 Map of Basins with Gage Locations ..................................................................................... 2-4 2-2 Flow Rate Versus Depth Curve for Miller Creek............................................................... 2-14 2-3 Flow Rate Versus Depth Ctirve for Walker Creek ............................................................. 2-15 2-4 Flow Rate Versus Depth Curve for Des Moines Creek ..................................................... 2-16 2-5 Changes in Average Water Depths and Widths Between the 1994 and 2006 2-Year,…
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