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,5 <br /> AM720- t MSc "_LWb -LTi A� <br /> E <br /> F �s <br /> 6.3 System Monitoring <br /> During start up and operation system sampling and monitoring will <br /> comply with the requirements of the project discharge permit. This <br /> will include periodic sampling of system influent/effluent for <br /> specified analytes and continuous flora rate monitoring. The <br /> analytical results of the influent/effluent sampling will be used to <br /> assess system efficacy and to predict filter breakthroug'�. <br /> Routine operational monitoring will be conducted on at least a once <br /> or twice weekly basis. This monitoring wO_1 include recording line <br /> pressures, current and totalized flow, and power usage. Additionally, <br /> lines, fittings and wellheads will be inspected and maintenance or <br /> repair conducted as needed. <br /> In addition to discharge and operational monitoring a quarterly <br /> groundwater monitorinq program will hs maintained. This program will <br /> include the recording of water table elevations for all wells on the <br /> site and sampling for the following analytes: <br /> -benzene, toluene, xylenes, ethylbenzene (EPA method 8020) <br /> - -total gasolins hydrocarbons (EP) method 8015) <br /> A report will be submitted quarterly to the County Environmental <br /> Health Division and the Regional'. Water Qualit7 Control Hoard <br /> summarizing all 'analytical and operational data. This report will <br /> ; include: <br /> -status of remediation program <br /> -any problems encountered or unusual operating conditions <br /> --results of all water sample analyses <br /> isoconcentration plots of cheatical analytes <br /> -groundwater elevations plots (monthly) <br /> -projected activities for the coming quarter <br /> The quarterly report will be submitted on the tenth day of the month <br /> following the end of the calendar quarter. <br /> 6.4 Site Closure <br /> The pump anti,- treat system will be operated Until contaminant levels <br /> drop below state mandated maximum contaminant levels (MCLS). When <br /> these thresholds are reached system operation will continue for a <br /> time while verification monitoring is performed. If concentrations <br /> below action levels are verified, the system operation will be <br /> discontinued, however, t?'ta groundwater monitoring program will <br /> continue. If one year -of monitoring (4 events) continues to <br /> demonstrate levels below-MCLs, closure will be requested. Site <br /> closure would includes the decontamination and removal of all <br /> ---— -- ----- equipment-and--the abandonment-of all_wells_on <br /> Veber Point Property - 475 l 2 - - - - - - <br /> H20R"791.TLP _ <br />