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“Universe” of potential phosphorus for trading. Tributaries (Hangman, Little Spokane, Coulee) Mainstem groundwater Lake Spokane groundwater/surface water WA/ID stormwater WA CSOs. * No required reductions for groundwater and stormwater. ** Potential ideas for trading projects Stormwater
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“Universe” of potential phosphorus for trading Tributaries (Hangman, Little Spokane, Coulee) Mainstem groundwater Lake Spokane groundwater/surface water WA/ID stormwater WA CSOs
* 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.
Spokane River TMDL Implementation Schedule – Opportunities for Public Comment