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y <br /> This site is located a <br /> s� ne <br /> Mokelumne River. The r�veriintthisolachalf mile west of the <br /> to the northwest and is subject to generally <br /> f ti recent years, the periodic flooding. In <br /> overflowed its banks pros <br /> site was flooded when the river <br /> Quijano). The regional groundwater flows communication with Mr. Juan <br /> gene' the Mokelumne River to the north; however, the rfloallw is is <br /> surmised to be affected by local pumping wells. <br /> 3.0 REMEDIAL ACTION PLAN <br /> • 3.1 Soil Remediation <br /> �. Soils removed during excavation of the <br /> aerated on site. Confirmation samples former tanks were <br /> dets.detectable levels of p reported non- <br /> ectable <br /> tank o to was gasoline <br /> emgleda Loon confirm that me <br /> soil contamination was removed. The results reported noall <br /> n- <br /> detectable levels of gasoline hydrocarbons and subsequently <br /> the tank pits were backfilled with the aerated soil. <br /> No soil contamination was detected during the installatio <br /> Of the 6 monitoring wells. n <br /> Field observations and laboratory results indicate that all <br /> .._ soil contamination above the capillary zone <br /> and thus warrants no has been removed <br /> further soil remediation. Any soil <br /> contamination below the capillary zone will be remediated <br /> during groundwater remediation. <br /> 3.2 Groundwater Remediation <br /> w Groundwater remediation for the Tri Valley Growers, Plant T <br /> facility has been developed to reduce <br /> concentrations detected in groundwater samplesh taken afrom <br /> monitor wells at the sits, to below State Department of <br /> Health Services Drinking Water Standards. A groundwater <br /> remediation system consisting of extraction, <br /> air stripping, and infiltration of treated groundwatert has <br /> been designed based on information generated by the site <br /> assessment investigation. <br /> 3.3 Groundwater Extraction <br /> WaterWork proposes to initiate groundwater remediation <br /> initiating Pumping i r _ b <br /> A g n M.d <br /> pneumatic � Rith a pneumatic pump. A <br /> pump was selected to .accomodate the existing well <br /> diameter of 2.-inches and anticipated flow rate of less than <br /> 1 gallon per minute. <br /> The optimum pumping rate will be established <br /> --_ <br /> firstseveralweeks of system operation. Careful recording <br /> - -- - - <br /> -- g <br /> during a -- <br /> of system operational data Including flow rate and well <br /> drawdowns will be used to propose modifications to assure <br /> 3 <br /> i�+ <br />