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1 <br /> 8820101-k CDT-5 !. <br /> grout: A traffic-rated Christy box with locking we:lI. cap was used to <br /> complete the well at the surface. Well construction details are depicted <br /> graphically in the appended boring logs. All cuttings from each boring <br /> !! were placed in 55-gallon drums, sealed, labeled and left- onsite for proper <br /> 4 disposal pending the results of the sample analyses. <br /> Following completion of the borings, the soil samples were submitted to the <br /> WCC laboratory in Pleasant Hill, California. Standard WCC sample numbering <br /> and chain-of-custody procedures were used to track the samples. The <br /> samples were identified by boring (monitoring. well) number and sample depth <br /> interval. For example, a sample taken from the boring for MW-1 from the <br /> fifth interval at a depth of 25 feet would be iden6 fied as MW1-25-26.5 <br /> with 26.5 being the lower depth of the sampling interval. <br /> On September 1, 1988, wells MW-1 and MW4 were developed. and. sampled. Well <br /> MW-3 was found to contain only a few :inches of water and therefore could <br /> not be developed or sampled. A minimum of five casing volumes of water <br /> (35 gallons) were removed from each of the two wells using a Teflon <br /> { bailer. Per the state Regional Water Quality Control Board sampling <br /> protocol, all wells were allowed to recover to at least 80 percent of their <br /> ' original water levels prior to sampling. - The well's were sampled using a <br /> x, <br /> clean Teflon bailer, and samples were submitted to the WCC laboratory in <br /> Pleasant Hill for analysis. As with the soil cuttngs, .the recovered water <br /> rwas placed in 55-gallon drums, sealed, labeled and; left onsite for proper <br /> disposal pending the- results of the laboratory analyses. <br /> Laboratory Analyses <br /> All soil and water samples were kept on ice until submitted to 'the WCC <br /> laboratory. Standard WCC chain-of-custody procedures were followed to <br /> ' track the samples. Per the RFP, all soil samples were analyzed for total <br /> petroleum hydrocarbons (TPH) , while samples taken closest to the apparent <br /> water table location: and those with TPN concentrations greater than <br /> f <br /> 1 <br /> t <br />