TagClean Water Act(246)

This 1996 document summarizes public responses to a proposed modification of the water discharge permit (NPDES Permit No. WA-002465-1) for Sea-Tac International Airport, operated by the Port of Seattle. It addresses concerns raised at a June 1996 public hearing in Burien, WA, including questions about self-monitoring of water samples, erosion and water flow in Miller Creek, and the Department of Ecology's enforcement and fining process. The document outlines how Ecology responded to community concerns and describes permit changes, such as a new condition requiring the Port to assess the airport's impact on local creek hydrology.

A 1995 Washington Department of Ecology staff discussion paper analyzes regulatory challenges in applying the NPDES permit program to municipal and industrial stormwater discharges, focusing on how to ensure such discharges comply with Clean Water Act water quality standards. The paper explores questions around defining 'Waters of the State,' determining compliance monitoring points, and identifying which permitted dischargers require water-quality-based effluent limitations. Note that this paper does not represent official Ecology policy and was intended to stimulate internal discussion and policy decisions.

EPA Water Quality Standards Handbook, Second Edition (EPA-823-B-94-005a), August 1994, published by the EPA Office of Water (4305). Includes Appendix L: Interim Guidance on Determination and Use of Water-Effect Ratios for Metals, and a February 22, 1994 memorandum (EPA-823-B-94-001) from Tudor T. Davies, Director, Office of Science and Technology, to Water Management Division Directors Regions

Washington State Department of Ecology (Ecology) letter dated June 30, 1994, issuing NPDES Permit No. WA-002465-1 to Port Of Seattle – Sea-Tac International Airport, expiring June 30, 1999. Signed by John H. Glynn, Water Quality Supervisor, Northwest Regional Office. Permit authorizes discharge of industrial wastewater, non-contact cooling water, and storm water to Puget Sound, Des

Army Corps of Engineers Regulatory Guidance Letter 87-03, dated April 14, 1987, clarifying requirements for Section 401 water quality certification under the Clean Water Act. Covers when certification or waiver is required before Federal permit issuance, the effect of state denial or court voidance before and after permit issuance, and the ‘reasonable period of time’

EPA document EPA 440/5-84-031 establishing ambient water quality criteria for copper, published by the U.S. Environmental Protection Agency Office of Water Regulations and Standards, Washington D.C., pursuant to Section 304(a)(1) of the Clean Water Act of 1977 (P.L. 95-217). Authored by Robert W. Andrew (freshwater) and John H. Gentile (saltwater) at Environmental Research Laboratories in