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Water Quality Standards in the Pacific Northwest and Alaska
Recent Actions and Request for Comments in the Northwest and Alaska
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EPA approved Idaho's revised natural condition provisions of their water quality standards on July 20, 2004. 
Comment Period Extended! ADEC is proposing several changes to the current Mixing Zone regulations to improve clarity and reduce redundancy; allow mixing zones in certain fish spawning areas where there will be no adverse effect on the capability of an area to support fish spawning, rearing, or incubation; and to simplify some technical provisions including ones dealing with risk assessment, flow calculations, and mixing zone models. Comments will be accepted from July 26 though November 1, 2004.
EPA approved Water Quality Standards for Kalispel Indian Community on the Kalispel Reservation in accordance with the Clean Water Act on June 24, 2004.
EPA has granted water quality standards variances to the municipalities of Smelterville, Mullan and Page, Idaho. Smelterville and Page received variances for cadmium, zinc, and lead, and Mullan received variances for cadmium and zinc.
EPA approved new or revised Oregon Water Quality Standards for Temperature, Inter-Gravel Dissolved Oxygen and Antidegradation in accordance with the Clean Water Act on March 2, 2004.
On February 27, 2004, EPA partially approved Alaska Water Quality Standard (WQS) revisions.
Unit: Standards and Planning Unit
Point of contact: Jayne Carlin
Email: carlin.jayne@epa.gov
Phone Number: (206) 553-8512
Last Updated: 10/22/2004 04:00:21 PM
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