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17(April 1997,' r <br /> ' AGE-NC-960235 <br /> Page 4 of 4 , ' <br /> 12 Complete each boring as a ground water monitoring well using 20 feet-of 0 020-inch s t <br /> lotted E <br /> PVC screen The proposed monrtoringywell completion is illustrated in Figure 3 <br /> 4 GROUND WATER SAMPLING <br /> a - u <br /> 1 Survey the top of each well casing to the nearest 1f100th of a foot relative t <br /> monitoring wells o existing <br /> 2 No sooner' than 72 hours after installation measure to-the nearest 0 01 Foot the static water <br /> level in each monitoring well ' <br /> 3 , Using a submersible pump or dedicated bailer, surge and purge each monitoring well At <br /> 'least three well volumes of water will be removed from each well to stabilize temperature, <br /> pH, and conductivity, stabilization parameters will be measured at ane-gallon intervals <br /> Ground water samples will be collected'using disposable bailers, sainples well 6e collected <br /> in 40-m1 VOA vials and 1-titer amber battles ,° _ <br /> 4 Label and Iog water samples on a chain-of-custody form <br /> f , <br /> 5 Stare the samples in a chilled container and transport under chain-of-custody procedure t <br /> a state-certified laboratory for analysis Ground water samples will be analyzed for TPH-g, <br /> TPH-d and BTE&X with MTBE in accordance with EPA methods 5030, 6ze and 8020 <br /> - <br /> 6 , Store purged water in 55-gallon DOT drums on-site pending analytical,results <br /> 43 REPORTING =` <br /> E <br /> ! A report detailing the results of the work will be prepared The report will=be in a format acceptable <br /> to the PHS-EHD The report ti�ill be reviewed and`signed_by a California Registered Geologist _ <br /> , <br /> a <br /> i <br /> r ' <br /> n 4 <br /> f s <br /> , <br />