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Mr . Michael Nixon <br /> 23 March 2010 <br /> Page 3 <br /> • Using a direct-push technology (DPT) drilling subcontractor, Geosyntec proposes to <br /> advance up to 10 borings to an anticipated total depth of approximately 10 ft below land <br /> surface (BLS ) . Soil samples will be screened using an organic vapor analyzer with flame <br /> ionization detector (OVA-FID) . Based upon the soil screening results , up to six samples <br /> exhibiting the highest methane - corrected OVA- FID response will be submitted for <br /> laboratory analyses . If no OVA-FID meter responses are recorded above background <br /> levels , a minimum of three soil samples will be selected for laboratory analysis . The <br /> collected soil sample (s) will be laboratory analyzed by EPA Method 8021 <br /> (BTEX/MTBE) , based upon historical site detections and documented groundwater <br /> impacts . <br /> • Using DPT sampling equipment, groundwater samples will be collected by Geosyntec <br /> personnel at up to 10 locations (around the current USTs , in the vicinity of the fuel <br /> dispensers and in the area of the former UST/fuel dispenser) . Additionally, Geosyntec <br /> will collect groundwater samples from a minimum of six existing site monitoring wells . <br /> Collected groundwater samples will be laboratory analyzed for BTEX/MTBE by EPA <br /> Method 8021 . <br /> • All soil borings will be backfilled with native material and patched with concrete prior to <br /> leaving the site . <br /> Task 3 : UST Closure and Remediation Bidding Documents and Procurement Services <br /> Geosyntec personnel will prepare construction bid procedures and drawings for the closure of <br /> the USTs and associated fuel dispenser system , removal and off- site disposal of the overhead <br /> canopy, and UST closure generated construction and demolition debris , disposal of petroleum <br /> impacted soils , requirements for any groundwater remediation (e . g . open excavation <br /> groundwater aeration, dewatering/treatment, and/or chemical treatment) , and site restoration <br /> (incorporating any specific IRC requirements for excavation backfilling and compaction) . In <br /> addition to the bid documents, a bidding form ( Schedule of Prices) will be prepared by <br /> Geosyntec, and required for subcontractor project bidding . The draft bidding package will be <br /> provided to IRC for review. Upon approval , the bidding package will be submitted to a <br /> minimum of three Pollutant Storage System Contractors (PSSCs) and Geosyntec will coordinate <br /> a site visit prior to bid submittals . <br /> XR10109/CCR10024.DOC <br /> engineers I scientists I innovators <br />