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. m <br /> S <br /> color, and soil type on the boring logs. The boring logs <br /> will be reviewed by a project geologist and a civil engineer <br /> who is registered and/or certified in the State of <br /> California. <br /> u <br /> All samples collected will be properly <br /> Eachhandled <br /> sam le willrbence <br /> with the California DOHS guidelines. P <br /> properly labeled in the field and immediately stored in <br /> laboratory supplied coolers and preserved with blue or dry <br /> ice for transport to a California-certified laboratory for <br /> analysis. <br /> The official chain of custody record accompanies the samples <br /> and includes the site and sample <br /> analysismpedentification, ate and <br /> date <br /> the name <br /> time of sample collection, <br /> and signature of sampler. When transferring the possession <br /> the transferee signs, dates, and indicates <br /> of the samples, <br /> the time on the chain of custody record. The field sampler <br /> will properly package and dispatch ths samples <br /> to thethe <br /> appropriate laboratory for analysis, <br /> sample is properly preserved. <br /> GLQU st uc io <br /> The number, location, and depths of the ground water <br /> monitoring wells will be selected prior to commencement of <br /> work, and may require relocation or modification as the work <br /> proceeds. The ground water wells will be constructed of <br /> Schedule 40 PVC blank <br /> clean, 2-inch--diameter, flush-threaded, _ <br /> casing which extends from grade leVelto ano a depthdestimated at <br /> the highest anticipated water levl, and extending to a <br /> iameter <br /> screened casing with 0.020-inch perforations, <br /> depth of at least 10 feet into the <br /> water <br /> ofable.welle casings, <br /> fittings, screens, and other comp <br /> construction will be thoroughly steam cleaned before <br /> installing the well. <br /> The annular space surrounding the screened portion twoill be <br /> backfilled with No. 3 Monterey sand ofneescreened section. <br /> approximately 2 feet above the top 1-fact thick) will be <br /> A bentonite annular seal (approximately <br /> placed above the filter pack. The remaining annulus will be <br /> grouted with neat cement to the surface. <br /> minimize nt well boxes <br /> will be installed slightly above 9 waterti ht well <br /> infiltration of surface waters. Locking, g <br /> e the integrity of the well. <br /> caps will be installed to ensur <br /> u <br /> We Devolgnment <br /> New ground water monitoring wells will be developed to clean <br /> the well and stabilize the sand, gravel, and aquifer <br /> materials around the perforated section of the well. Well <br />