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Y <br /> August 29, 2011 <br /> Equilon Enterprises � -'4 - Au g <br /> Recommendation <br /> April, 2008, the Fund concurs with the San Joaquin County LOP direct that the Responsible, <br /> Party should continue to conduct groundwater extraction and to maximize the treatment system <br /> as necessary to achieve Water Quality Objectives in a timely manner. The Fund will review this <br /> site next year to track progress. <br /> UPDATED, September 2010, the Fund recommends that the San Joaquin County LOP consider <br /> this site for closure. _ <br /> UPDATED, September 2011, monitoring well MW-4 screened in the source area has <br /> consistently had elevated concentrations of residual hydrocarbons in groundwater. However, <br /> after�11 years of monitoring, the groundwater plume is largely limited to the source area. <br /> Analytical data indicate that WQOs have been achieved in down gradient wells. Groundwater <br /> within the source area will likely remain above WQOs for years to decades. The Fund <br /> recommends that the San Joaquin County LOP review this site for closure. W <br /> Afe <br /> Kirk Larson; P.G. Date` .> i,'Robert Trommer, C.H.G. Date <br /> Engineering Geologist Senior Engineering Geologist <br /> Technical Review Unit Chief, Technical Review Unit <br /> (916) 341-5663 (916) 341-5684 . <br /> 1 <br />