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using a photo-ionization detector (PID) pre-calibrated to isobutylene. <br /> 10) Place auger returns on plastic sheeting and store on-site pending analytical results. <br /> 11) Analyze soil samples for total petroleum hydrocarbons (TPH as gasoline, diesel and <br /> motor oil) in accordance with EPA method 8015. <br /> 12) Decontaminate sampling equipment in an alconox solution and rinse twice with water <br /> prior to each sampling run. <br /> 13) Install a 2-inch diameter PVC slotted casing (0.010 inch) in each boring and backfill <br /> while extracting the augers. The casing will be surrounded with #1120 sand from the <br /> bottom of the boring to five feet above first groundwater. A bentonite plug will be <br /> placed above the sand and the boring will then be sealed to the surface with grout_ <br /> Augers will be steam-cleaned between borings. <br /> 14) No sooner than 48 hours after installation, measure to the nearest 0.01 foot, the <br /> static water level in the well. <br /> 15) Using a bailer or submersible pump, surge and purge. each well of standing water to <br /> stabilize ten1perature, pH and conductilylity. Well parameters will be measured at <br /> one-gallon intervals. A minimum of three well volumes of water will be removed <br /> from each well. <br /> 16) Store purge water on-site in DOT-approved drums pending laboratory results. If <br /> laboratory analysis of groundwater samples indicate that no target contaminants are <br /> present in groundwater at the site, the purge water will be discharged on-site and the <br /> drums will be removed front the site by GeoAudit. However, if laboratory results <br /> indicate that impacted groundwater is present at the site, the drums will remain on- <br /> site to store additional purge water. Onre full, each drum will be tested and <br /> disposed in appropriate manner. <br /> 17) After stabilization, collect one groundwater sample. The samples will be collected icr <br /> EPA 40-tnl vials; the sample will be collected using a new disposable bailer. <br /> 18) Transport groundwater samples under chain-of-custody to a state-certified laboratory <br /> for analysis. The groundwater sample will analyzed for TPH (gasoline, diesel and <br /> motor oil) and chlorinated pesticides in accordance with the appropriate EPA <br /> methods. <br /> 19) Preparation of a report detailing the results of the work in an appropriate format to <br /> be submitted to the PHSfEHD. <br /> 4 <br /> 9C-Va¢lSdt-1'NAcDurSd IJud AW Sim As.Gof N'P[1+-95 <br /> g 'd OOLO 956 6OZ ON 39tV VJOdJ Hd9 V =V 564;l-p7i-5 <br />