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GEOSYNTEC CONSULTANTS <br /> Ms. Amy Terrell <br /> 25 August 2003 <br /> Page 6 <br /> Laboratory Microcosm Evaluation <br /> The laboratory microcosm evaluation will consist of the following tasks. <br /> Task 1 - Soil and Groundwater Collection <br /> GeoSyntec will collect site soil for the microcosm studies from the former tank <br /> farm area. Soil samples will.be collected using a Geoprobe with approximately 15 feet <br /> of core from two boreholes. After extraction, the sample liners will be capped with <br /> clean/sterile plastic end caps upon retrieval from the borehole, labeled with the sample <br /> location and depth, and the sample date and placed on ice packs in a cooler. The soil <br /> samples will be express-shipped under chain-of-custody to the SiREM Laboratory, in <br /> Guelph, Ontario where the microcosm evaluation will be conducted. <br /> Task 2—Microcosm Construction for Accelerated Soil Treatability <br /> SiREM lab staff will construct a series of anaerobic treatment and control <br /> microcosms to evaluate biodegradation under various intrinsic and enhanced conditions. <br /> Table 1 summarizes the types of treatments and controls that will be evaluated. <br /> Table 1: Treatment table for WFS Vernalis Microcosm Evaluation <br /> Treatment Amendments Purpose <br /> Intrinsic Control None simulates current site <br /> conditions <br /> Molasses, <br /> Emulsified 20 % Selected demonstrates affect of <br /> Vegetable Oil or additive alternate/low cost amendment <br /> other Treatment <br /> demonstrates affect of <br /> HRC Primer HRC Primer amendment proposed for use at <br /> site <br /> P:\PRJ2003REM\WFSWER\Soi1 Plan 2003\RAP-Soil 8-25.doc <br /> KCIUMAMMMCLAXE � r <br />