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13 December 1995 <br /> AGE-NC Project No. 95-0109 <br /> Page 6 of 8 <br /> 3. Decontaminate sampling equipment in an Alconox solution and rinse with water prior to each <br /> sampling run. <br /> 4. Collect soil samples at 5-foot intervals, beginning at 20 feet. Samples will be collected using <br /> a split spoon sampler loaded with three pre-cleaned, 2-inch by 6-inch brass sleeves. <br /> 5. Preserve soil samples in the middle sleeve by covering both ends with Teflon or aluminum <br /> sheets, capping and sealing with tape. <br /> 6. Label and log samples on a chain-of-custody form. <br /> 7. Store samples in a chilled container and transport to a State-certified laboratory for analysis. <br /> Selected soil samples will be analyzed for TPH-g and BTE&X in accordance with EPA <br /> methods 8015m and 8020, respectively. <br /> 8. Analyze selected soil samples for physicochemical properties, general microbiological <br /> enumeration and selected enumeration. <br /> 9. Monitor auger returns and soil sample duplicates for the presence of volatile organics using <br /> a photo-ionization detector (PID) pre-calibrated to isobutylene. <br /> 10. Log auger returns and soil sample duplicates in accordance with the Unified Soil <br /> Classification System. <br /> 11. Place auger returns in 55-gallon DOT drums and store on-site pending analytical results of <br /> soil samples. <br /> 12. Complete boring as a ground water monitoring well using 20 feet of 0.020-inch slotted PVC <br /> screen. The proposed monitoring well completion is illustrated in Attachment A. <br /> 13. Survey the top of the monitoring well casing to the nearest 1/100th of an inch to determine <br /> the elevation relative to existing wells. <br /> 14. No sooner than 72 hours after installation, measure to the nearest 0.01 foot, the static water <br /> level. <br /> 15. Using a dedicated bailer or submersible pump, surge and purge the new monitoring well. At <br /> least three well volumes of water will be removed to stabilize temperature, pH and <br /> conductivity; stabilization parameters will be measured at one-gallon intervals. <br /> 16. Collect a water sample using a polyethylene disposable bailer; the sample will be collected in <br /> 40-m1 VOA vials. <br /> 17. Label and log water sample on a chain-of-custody form. <br /> 18. Store sample in a chilled container and transport under chain-of-custody procedure to a State- <br /> certified laboratory for analysis. The water sample will be analyzed for TPH-g and BTE&X <br /> in accordance with EPA methods 5030/8015m and 602, respectively. <br />