TagEcology(797)

Draft Water Quality Certification #1996-4-02325, pages 16-17 of 23, dated August 2001, issued by Washington State Department of Ecology regarding Port Of Seattle Seattle-Tacoma International Airport (STIA). Covers operational stormwater requirements including the approved Comprehensive Stormwater Management Plan (CSMP) Volumes 1-4 December 2000 as revised July 2001, retrofitting of stormwater management facilities, discharge of operational

Deliberative memorandum dated August 1, 2001 from Katie Walter (KLW@shanwil.com) to Ann Kenny, Washington State Department of Ecology, re Draft 401 Conditions for Auburn Mitigation Site revisions. Covers culvert placement issues in revised grading plan (June 28, 2001) at northwest corner and south central portion of site, drainage swale, maintenance pathway, and southwestern basin. Performance

This 2001 User's Guide from the Washington State Department of Ecology describes software workbook tools (MTCASGL and MTCATPH) designed to help calculate soil and ground water cleanup levels under the Model Toxics Control Act. The guide covers installation, technical requirements, and step-by-step instructions for entering site-specific data such as chemical properties, exposure parameters, and hydrogeological characteristics. Note that while this document addresses environmental cleanup standards, it does not appear to be directly related to Sea-Tac Airport noise policy.

Deliberative memorandum dated August 1, 2001, from Katie Walter to Ann Kenny, Washington State Department of Ecology, re Draft 401 Conditions for the Auburn Mitigation Site. Covers culvert placement issues in the revised grading plan (June 28, 2001) including northwest corner drainage swale culvert (approximately 60 feet long), south central mis-located culvert, and two additional

Washington State Department of Ecology Water Quality Program publication numbers 99-11 through 99-15, August 2001. Stormwater Management Manual for Western Washington covering five volumes: Volume I Minimum Technical Requirements and Site Planning, Volume II Construction Stormwater Pollution Prevention, Volume III Hydrologic Analysis and Flow Control Design/BMPs, Volume IV Source Control BMPs, Volume V Runoff Treatment

Email from Ann Kenny to Katie Walter (cc: Raymond Hellwig, Erik Stockdale) dated July 31, 2001, transmitting Attachment X: NRMP Plan Set Revisions (AR018266, DOE 8/13/01 0567). The attachment lists prescriptive revision requirements for plan sheets in Appendix A (Miller Creek Relocation and Floodplain Enhancement) and Appendix B (Miller Creek In-stream and Buffer Enhancements), including

Letter dated July 31, 2001 from Keith R. Smith, Water Resources Manager at Port Of Seattle, to Ms. Ann E. Kenny at the Washington State Department of Ecology Northwest Regional Office (Bellevue, WA 98008-5452), transmitting conceptual drawings for the proposed Flow Impact Offset Facility at Seattle-Tacoma International Airport. Drawings relate to reserved stormwater release storage,

This July 2001 draft document outlines clean fill criteria for the Port of Seattle's Third Runway construction project at Sea-Tac Airport, requiring the Port to submit environmental assessment documentation to the Washington Department of Ecology before placing any fill material. It specifies that fill may only come from state-certified borrow pits, contractor-certified construction sites, or Port-owned properties, while prohibiting the use of any contaminated or remediated soils. The document details testing and sampling requirements, including review of contamination records and analysis of hazardous substances, to ensure that no toxic materials are introduced into wetlands or state waters during construction.

Deliberative, do-not-disclose email from Ann Kenny (Washington State Department of Ecology) dated July 29, 2001, transmitting a preliminary draft 401 Water Quality Certification (WQC) for the Port of Seattle Third Runway construction at Seattle-Tacoma International Airport (STIA) in the Miller, Walker, and Des Moines Creek watersheds. The draft WQC references JARPA application dated October 25,