“Universe” of potential phosphorus for trading Tributaries (Hangman, Little Spokane, Coulee) Mainstem groundwater Lake Spokane groundwater/surface water.

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Presentation transcript:

“Universe” of potential phosphorus for trading Tributaries (Hangman, Little Spokane, Coulee) Mainstem groundwater Lake Spokane groundwater/surface water WA/ID stormwater WA CSOs

Mainstem Spokane River Max available total phosphorus between WLA and LA + Natural (lbs/day) Groundwater upstream of lake (lbs/day) Groundwater /Surface water Runoff Lake Spokane Watershed (lbs/day) Stormwater in Washington (lbs/day) Stormwater in Idaho (lbs/day) Combined Sewer Overflow (lbs/day) Mar – May June July – Oct * No required reductions for groundwater and stormwater. ** Potential ideas for trading projects Stormwater Look at opportunities to address stormwater going to drywells Look at installing more stormwater best management practices Look at phosphate bans ( fertilizer use, deicer and detergent use) Groundwater Look at net removal of septic tanks Improvements to drywells to better remove phosphorus Look at phosphate bans

*Flow is variable in tributaries –less flow in critical season *None of these numbers apply trading ratios that are yet to be developed * Assumes that all best management practices in the TMDL are being implemented ** Potential ideas for trading projects for load remaining available after reduction (last column) Look at direct seed or other conservation practices. Reduce streambank erosion Repair failing residential on-site septic systems.

Advisory Committee Members City of Spokane Spokane County Liberty Lake Sewer and Water Kaiser Inland Empire Paper City of Coeur d’ Alene City of Post Falls Hayden Area Regional Sewer Board Avista Spokane Tribe of Indians Sierra Club Center for Justice / Riverkeeper Lands Council Lake Spokane Property Association Idaho Dept. of Environmental Quality EPA Meetings organized by Spokane River Forum

Role of Spokane River Forum To convene meetings and provide transparency to process through minutes, updates on website, etc.

ActivityResponsible Party Frequency or Target Date Advisory Committee Meetings Meeting announcement with draft framework / schedule / groundrules Ecology - WQ By September, 2010 Advisory Committtee MeetingsEcology - WQ Quarterly, Starting October 2010 or as- needed Offset / Trading Framework Develop offset / trading framework Ecology – WQ with Advisory Committee input June 2010 – 2 nd QTR 2011 Develop "white paper" Early September, 2010 Develop mock scenarios Early October, 2010 Determine eligible trades Early October, 2010 Identify eligible BMPs 1 st QTR 2011 Quantify pollutant reductions 1 st QTR 2011 Establish trading ratios 2 nd QTR 2011 Complete offset/trading framework 2 nd QTR 2011 NPDES Municipal Wastewater Permits Draft permits issued for public commentEcology - WQ Permit Unit Late August to early Oct, 2010 Public meeting to discuss draft permitsEcology – WQ Permit Unit September, 2010 Spokane River TMDL Implementation Schedule – Opportunities for Public Comment