EXH0728026505

PCHBPollution Control Hearings Board of the State of Washington

Subject: Results of Soils Testing for Pesticides and Herbicides, Vacca Farm Site cc: Paul Fendt, Kurt Eeethouse, Unda Logan, Doug Henderson •Project Number:. 556-2912-001(66) ProjectName: Port of Seattle, 3rd Runway Project Background and Purpose Informationregardingthe presenceof pes_cidesand herbicidesin soil at the Vacca Farm site has been identifiedas a data gap for the project. The site has been farmed for a - number of years and has likely been treated with pesticides and herbicides,although information about the types and quantities of chemicals applied is not available. Of specific interest is the potential for soils containing pesticides and herbicides to cause leaching of these chemicals into surface water in the Miller Creek relocationarea. The purpose of this sampling program was to test for the presence of pesticides and herbicides in areas of the site where these chemicals could potentially impact surface water quality. Sampling Locations, Methods, and Procedures Thirteen soil samples were collected from six locations at the site by Parametrixstaff on November 9, 1999, as shown on Figure 1. Sampling procedures were followed as specified in the November 3, 1999, Soil Samplingand Analysis Plan (AppendixA). The samples were submitted to Sound AnalyticalServices, Inc., in Tacoma, Washington, tor analysisof the followingparameters: • Organochlodnepesticidesby EPA Method 8181 (20 compounds) • Organophosphorouspesticides by EPA Method 8140 (27 compounds) • Herbicides by EPA Method 8150 (12 compounds) Sampling Results Detected chemicals indicatedby the resultsfrom the laboratoryare summarized in Table 1. These resultsare characterizedas follows: G:IDATAk_12tS.q291201t88V_ Farm So_|Vecca Felrn Soil_ Memo6._c AR 026505 ..... Paul Agid/Port…
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