Notes
HartCrowser report prepared for Port of Seattle, September 21, 2001, project 4978-54. Topsoil Management Plan for Borrow Area 4 at Seattle-Tacoma International Airport (STIA), City of SeaTac, Washington, in support of third runway embankment construction. Documents arsenic contamination in topsoil from ASARCO copper smelter airborne emissions plume (Tacoma smelter plume), chemical analysis results, comparison to regional arsenic concentrations at Maury Island, Vashon Island, and University Place. Outlines best management practices (BMPs) for topsoil removal, stockpiling, and reclamation including TESC Plan and NPDES Sand and Gravel General Permit compliance. AR051217.
