At the December 16th DO TMDL Implementation Advisory Committee meeting, Ecology was requested to sort comments to the draft Water Quality Trading Framework by category (type). The attached document from Ecology does this.
This presentation was presented by the University of Washington at the December 16th DO TMDL Implementation Advisory Committee.
Authors state “The objective of this study was to use algal bioassays to determine the Bio-available Phosphorus (BAP) of effluent treated by the pilot projects at the main WWTP discharges to the Spokane River. This is critically important because it is currently unknown whether the effluents of facilities designed for advanced P removal tend to make the residual P more or less bioavailable compared to conventional treatment processes.”
Summary of progress toward development of Spokane River DO TMDL trading program development.
Chart shows preliminary estimate of phosphorus reduction needed by dischargers to meet TMDL wasteload allocation or wasteload assumption (Idaho) based on anticipated draft permit limits.
The next Spokane River DO TMDL Implementation Advisory Committee will be December 16th, 2010. Details, including, meeting materials available.
Ginny Darrell Ecology presentation in November, 2010 regarding issuing Spokane River NPDES permits. Permits implement the TMDL requirements for point source dichargers by limiting the amount of pollutants and providing a compliance schedule.