EXH 331: Letter to WA Dept of Ecology — MTCA Groundwater Study Potential Sites Table, STIA

A December 1999 letter from Port of Seattle Senior Environmental Program Manager Paul W. Agid to the Washington Department of Ecology transmits a 'potential sites' table and map identifying locations at Seattle-Tacoma International Airport where historical operations may have caused soil or groundwater contamination. The document, compiled in compliance with an Agreed Order under Washington's Model Toxics Control Act (MTCA), lists twelve potential sites including former gas stations, fuel tanks, hydrant lines, and maintenance areas. The sites were identified based on past operational activities that had since been discontinued or modified prior to current environmental regulations.

Notes

Exhibit 331 (STRUNK 00001–00003, AR 020965–020967), dated December 13, 1999. Letter from Paul W. Agid, Senior Environmental Program Manager, Port Of Seattle, to Roger Nye, Washington Department of Ecology Northwest Regional Office, Bellevue, WA. Transmits a “potential sites” table and map for the Seattle-Tacoma International Airport MTCA (Model Toxics Control Act) Groundwater Study in compliance with Agreed Order scope of work section IV.1.(b). The enclosed table (dated 7/10/01) lists 12 identified potential sites (P1–P12) at Sea-Tac Airport with potential soil and groundwater contamination based on historical operations, including: Former Maintenance and Paint Shop, Former Gas Station, Former Lagoon Area, Possible Refueler Tank (20,000 gallon fuel tanks), Abandoned Hydrant Line, Possible Concourse A Area Fuel Tank (500 gallon, 1966–8 drawings), Possible Parking Garage Fuel Tanks (2–4,000 gallon tanks), Former Gas Station (removed 1969), Possible Transformer Room Fuel Tank, Abandoned Hydrant Line (near Concourse C), Former Maintenance Hangar Tank Area (7 fuel/oil USTs, two drywells), Possible Air Cargo Area Tanks (2,000 gallon fuel tank and 500 gallon gas tank). Witness: Strunk; Court Reporter: Diane Mills. PCHB Third Runway EIS administrative record.

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