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' 05 November 1996 <br /> AGE-NC Project No. 96-0273 <br /> Page 3 of 4 <br /> equipped with 1.125-inch diameter rods. Proposed probe boring locations are depicted on <br /> Figure 2. If field observations indicate that hydrocarbon-impacted soil and/or ground water <br /> is present, additional probe borings may be advanced at the site. <br /> I <br /> 4. Decontaminate sampling equipment in an Alconox solution and rinse with water prior to <br /> each sampling run. <br /> S. Obtain soil samples at 5-foot intervals. Samples will be collected using a Geoprobe soil <br /> sampling assembly pre-loaded with four 1.125-inch byj 6-inch brass sleeves. <br /> 6. Preserve soil samples in the second brass sleeve by covering both ends with Teflon sheets, <br /> capping, and sealing with tape. <br /> 7. Label and log samples on a chain-of-custody form. <br /> 8. 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, BTE&X and MTBE in accordance with <br /> EPA methods 8015m, 8020 and 8020, respectively. <br /> 9. Monitor soil sample duplicates for the presence of volatile organics using a photo-ionization <br /> detector(PID) pre-calibrated to isobutylene. <br /> i <br /> { 10. Log soil sample duplicates in accordance with the Unified Soil Classification System. <br /> 11. Backfill each probe boring to surface grade using Portland Cement. <br /> 4.2. GROUND WATER SAMPLING <br /> Grab ground water samples will be collected from selected soil probe borings. The following <br /> procedures will be performed: <br /> 1. Collect a grab ground water sample from two selected probe borings. Ground water samples <br /> will be collected using a Geoprobe water sampling assembly. Each sample will be collected <br /> in 40-m1 VOA vials containing hydrochloric acid. <br /> 2. Transmit each ground water sample to a State-certified laboratory under chain-of-custody <br /> procedure. <br /> 3. Analyze each ground water sample for TPH-g,BTE&X 6d MTBE in accordance with EPA <br /> methods 8015m, 602 and 602, respectively. <br /> r <br /> i <br /> 1 <br /> i <br />