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Fl HAL REIIEDLATtON PLAN <br /> 1399 East Yosemite Avenue Manteca California <br /> 5.0 FINAL REMEDIATION PLAN <br /> ' 5.1 Remedial Action Technology Selection <br /> ' The selected remediation technology for this site will remove and destroy petroleum <br /> hydrocarbons from both sod and groundwater by using an internal combustion (IC) <br /> engine, a power take off, a vacuum pump, air compressor, and a water pump <br /> ' Petroleum hydrocarbons in soil will be removed by vapor extraction technology <br /> Groundwater extraction will create a cone of depression on the groundwater surface, <br /> ' ensuring containment and recovery of the hydrocarbons in groundwater, and also <br /> exposing additional soil to the vapor extraction system <br /> ' 5.2 Proposed Clean Up Levels <br /> Listed below are proposed target concentrations of petroleum hydrocarbons in <br /> groundwater and soil to be achieved through remedial efforts at the site Once it is <br /> demonstrated that the proposed target concentrations have been reached, groundwater <br /> quality trends will be assessed and a recommendation for site closure will be made <br /> ' Contaminant Target Concentrations <br /> Constituent Groundwater Soil <br /> k <br /> Benzene `c 1 0 jjg/L 2 5 mg/L <br /> Toluene E e '`��^� C 2000 Mg/L 2 5 mg/L <br /> Eth lbenzene 5� ��' �ti� 680 L 2 5 m L <br /> Total Xylenes Oil 440 erg/L 25 mg/L <br /> 1 � <br /> The proposed target concentrations for groundwater comply with the Federal MCL and <br /> the proposed secondary maximum contaminant levels in groundwater for the listed <br /> constituents The proposed target concentrations for soil comply with levels presented <br /> to the Leaking Underground Fuel Tank Field Manual using the appropriate work sheets <br /> ' for the listed constituents <br /> 1 <br /> 11 <br /> ' 90-098F RPT 7 <br /> 1 ` <br />