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d <br /> 16 April 1997 <br /> AGGNC Project No . 95 -0121 <br /> Page 9 of 9 <br /> 3 . Boring locations will be marked at least 48 hours in advance for an Underground Service <br /> Alert ( USA) check of underground utilities or pipes. <br /> 4 . Advance approximately three soil borings to a total depth of approximately 35 feet bsg <br /> utilizing a van-mounted Geoprobe equipped with 1 . 125- inch probe rods. <br /> 5 . Decontaminate all sampling equipment in an alconox solution and rinse twice with water prior <br /> to each sampling run . Steam -clean auger flights before advancement of each boring . <br /> 6 . Soil samples will be collected at five-foot intervals beginning at 10 feet below site grade (bsg) <br /> using a Geoprobe soil assembly and associated 1 . 125-inch diameter brass sleeves . The middle <br /> brass sleeve will be removed and the ends covered with Teflon tape or aluminum sheets, <br /> sealed with plastic end caps, secured with tape, and immediately placed in a chilled container. <br /> Each sample sleeve will be labeled with the following : boring location, depth, time, date, <br /> sampler's initials, and transported to a state certified laboratory. <br /> 7 . Store the samples under ice and transport the samples in a chilled ice chest to a State certified <br /> laboratory for analysis. Screen soil sample duplicates for the presence of volatile organics <br /> using a photo-ionization detector (PID) pre-calibrated to isobutylene. Selected soil samples <br /> will be analyzed for TPH-g, TPH-d, BTEKX and MTBE in accordance with the appropriate <br /> EPA methods. <br /> 4. 4 . REPORTING <br /> As remediation of hydrocarbon impaction at this site is implemented, quarterly reports will be <br /> submitted to the PHS-EHD and the CVRWQCB . The quarterly reports x ill include analytical results <br /> and field readings, and report remedial progress at the site. Quarterly reports will be reviewed and <br /> signed by a California Registered Geologist. <br />