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REGAL 603 8/16/91 <br /> has taken place the water (approximately 100 gallons) will be <br /> dumped to the sewer and another batch dump of water will be <br /> aerated for 2.5 hours. is <br /> shed <br /> air <br /> Again the aeratioosin the <br /> ed"innthelbottonaofothe ltank byheated <br /> air <br /> spray nozzles p <br /> tr e 1 <br /> be <br /> into the water pumped from MW3. The <br /> lowerexplosionlimitemeter <br /> pumped to the sewer after passing by <br /> alarmed at 2o% total petroleum hydrocarbon vapor and auto shut <br /> down at 40% total petroleum hydrocarbon vapor. An influent and <br /> effluent water sample will be obtained during the water <br /> treatability test, labeled, preserved, chain of custody delivered <br /> to Chemtech Laboratories (OHS x;359) for certified analysis using <br /> EPA methods 8015 for gasoline and diesel range hydrocarbons and <br /> 602 for benzene, toluene, ethyatmen , the wateretreatment• After <br /> system <br /> the initial week of water treatment, <br /> will be turned off until receipt of the laboratory analysis and <br /> permission from the City of Stockton Municipal utilities <br /> Department allowing us to discharge to the sewer, see Figure 7C- <br /> schematic of Pumping-Treatment of Ground Water. Prior to pumping, <br /> depth to ground water measurements wi..1 be obtained from all of <br /> the monitor wells- During the pump test these measurements will <br /> be continuously recorded by thetransducer <br /> trMW3, MWA, and aMW8. For the <br /> recorders at monitor wells MW1, , <br /> logcjers or <br /> n <br /> remaining monitor wells, depth to water measurements will be <br /> obtained daily to 0.01' using a calibrated resistivity probe for <br /> the one week test period. Once pumping has ceasedndtMWerwilleba <br /> rate of monitor well MW3 along with MW1, MW2, MW4, <br /> recorded using the recorded transducers as mentioned above. <br /> each <br /> this data, time drawdown curves will be plotted <br /> observation well and using time and distance draw down type curves <br /> for an unconfined aquifer, a calculated transmissivityandstorage <br /> water <br /> coefficient will be obtained. From this data a ground <br /> modeling program will be used to determine the recovery rate and <br /> wells needed to capture the contaminant plume. <br /> PAGE 12 <br />