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?d December 2UOO <br /> AGL -NC Pro_;cct No. 95-0114 <br /> I'age 6 W <br /> 31. PREMUM "MON I'1.AN <br /> Upon rtmnplehon Of We pilot study. a leadhility study report 011 be pmpmvd presenting the JKlings <br /> ofthe pilot study. The report will present an evaluation otthe Ceasihilitx of,round V%MC1' e..Xtraction <br /> as a site remediation method. Conclusions and applicable recommendations v�ill also he included <br /> in the report. ]'he report Nmdl be in a format acceptable to the PI-IS-FI ID and the RWQ('B. and will <br /> be rcvievyed and sifned by a California Registered Geologist. <br /> 4.0. FIELD PROM)URF.S <br /> All licld pruccdures will he uverseen by an AGE representative- under the superyisiun ofa C'alikwnia <br /> Registered Gculogist. Pnmedures liar the vNell insm ikdom well develoilrnent_ dedicated MAW <br /> pump installation and aground water extraction procedures and dedicated pressure transducer <br /> installation are detailed below. <br /> 4.1 . PILOT SOIL BORING <br /> Sit soil pilot hohngs "W he Mblisltcd on and neat the site to a maximum depth ut'45 beet bst­ <br /> utilizin� a [Ruck-naourlled drill rig, with 8-inch hollow-sterns and onk soil pilot horing, �vgill he <br /> established in the tormcr UST area to a maximum depth ol' 50 legit hsg with 12-inch diameter <br /> 11011O-Mem for the ('round Ntiater extraction Ny011 construction. <br /> Cuttin4gs generated during drilling will be placed in DOT-approved 55-gallon drums or steel <br /> containers for disposal, Rinscatc will be containerized in properly labeled D(A"approved 55-gallon <br /> drums. and stored on-site in an area lacking public access. Disposal alterna k es "ll. be evaluated <br /> and selected based on results of soil anti water analysis. <br /> 4.2. SOIL SAN11111,.' COL Ll,_C'l'ION <br /> Soil samples will be collected at 5400t intervals from 10 feet bsg to total depth using a C'alit nda <br /> splinspoon sampler and brass sleeves. 'rhe sampler will be driven by dropping a 140-pound "eight <br /> Irom a height ol'30 inches. "Chc member of blows required to drive each 6-inch lem_th of the sampler <br /> (hloX� Counts) will be recorded on boring logs compiled by an AC1L staffgoeoIogist. <br /> I;pon sample retrieval. the leading brass sleeve will be rcmoycd from the sampler. "Ile ends ofthe <br /> sleevc will he immediately covered with -etlon sheets and sealed With 1-lactic end raps secured with <br /> tape. I'hc preserved samples wM then he iminedia Q placed under iCC ir; a chilled Container for <br /> tran s'portation to a state-ccrtified lahu mory. Each soil sample sleeve -vvill be labeled with horin,) <br /> location. vertical depth, sampling time, elate and sampler's initials. The preserved soil samples will <br /> Ten be immediately placed in a chilled container for transportation under chain ofcustody to a state- <br /> ldra rced GeoEn%ironmentaL lire. <br />