TagACC(1524)

This user’s guide from the Washington State Department of Ecology Toxics Cleanup Program describes two software workbook tools (MTCASGL and MTCATPH) for calculating soil and ground water cleanup levels under the Model Toxics Control Act. It covers installation requirements, worksheet navigation, data input parameters, and interpretation of output results. The guide includes cautions on proper

Draft pages from Washington State Department of Ecology’s Water Quality Certification for Sea-Tac Airport (STIA), covering operational stormwater requirements including the approved Comprehensive Stormwater Management Plan, retrofitting obligations, and discharge standards. The document includes handwritten annotations and margin notes discussing AKART requirements, flow control standards, and proposed Ecology manual compliance. It references the Port of

Administrative Record document AR046206 noting this is a duplicate of an August 2001 document, with reference to Exhibit No. 1267. The document contains no substantive content beyond the cross-reference notation.

Exhibit AR032547 from Washington State Department of Ecology (Ecology), Volume V – Runoff Treatment BMPs, August 2001. Covers phosphorus removal treatment trains (Table 3.1), Enhanced Treatment Menu (Section 3.4) and Basic Treatment Menu (Section 3.5) for stormwater management. Specifies requirements for industrial, commercial, multi-family project sites, arterials and highways discharging to fish-bearing streams or lakes.

This 2001 User's Guide from the Washington State Department of Ecology explains how to use spreadsheet workbook tools (MTCASGL and MTCATPH) to calculate soil and groundwater cleanup levels under the Model Toxics Control Act. The guide covers how to enter site-specific data—such as chemical properties, exposure parameters, and hydrogeological characteristics—to determine safe contamination thresholds. It is intended for environmental cleanup professionals working on hazardous substance remediation in Washington State.

An email chain discussing communications strategy around an upcoming third-runway decision announcement. Thomas Fitzsimmons raises questions about timing of stakeholder outreach including contact with the governor, Port Commission, and media. The chain originated from Sheryl Hutchison of the Washington State Department of Ecology seeking to arrange a call between Tom and Seattle editorialists.

A memorandum from Katie Walter to Ann Kenny of the Washington State Department of Ecology outlining draft 401 conditions for the Auburn Mitigation Site. The memo addresses culvert placement issues identified in the revised grading plan and performance standards for vegetation monitoring, hydrologic monitoring, and mitigation site management. An accompanying email notes the draft is

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

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,

Handwritten meeting notes from July 2001 discussing water quality treatment, spill containment, and oil management issues related to NEPL and CARBO. Notes reference downstream water quality treatment percentages, gravity oil-water separators, spill containment upstream vaults, and volume concerns. Also references a July 23 report and impact analysis documentation issues.