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Innovative Approaches to Temperature Tmdl Implementation in The Umatilla River Basin

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Abstract:

The City of Pendleton, Oregon is implementing a watershed-based approach at its Wastewater Treatment Plant (WWTP) to address the City's excess thermal wasteload allocation in the Umatilla River Basin Temperature Total Maximum Daily Load (TMDL). The watershed approach involves offsetting the WWTP thermal load through a new subsurface Soil Aquifer Treatment (SAT) outfall and converting a portion of the City's senior water rights on upstream springs for instream uses. The City's two-step temperature compliance approach improves thermal conditions in the Umatilla River for endangered salmonids and provides a cost-efficient temperature compliance approach for local rate-payers.

Keywords: KENNEDY/JENKS; OREGON; PENDLETON; SOIL AQUIFER TREATMENT; SUBSURFACE DISCHARGE; TEMPERATURE; TMDL; TRADING; UMATILLA RIVER; WATER QUALITY

Document Type: Research Article

DOI: https://doi.org/10.2175/193864707786619792

Publication date: 2007-10-01

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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