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a <br /> Eggirr hn's Hydraulic Gare 4 - August 25, 2011 r <br /> - Risk Evaluation <br /> No human health risk assessment is noted in Geotracker. There are no water supply wells or <br /> surface water,receptors present within 1,400 feet of the Site. <br /> Recommendation <br /> April 2008, the Fund recommends that the San Joaquin County LOP direct the Responsible <br /> Party to assess remedial technologies that may achieve Water Quality Objectives more rapidly. <br /> The Fund will review this site next year to track progress. <br /> UPDATED, September 2010, the Fund concurs with the San Joaquin County LOP that active <br /> remediation should commence without delay. <br /> UPDATED, September 2011, monitoring well MW-2 screened in the source area and MW-7 <br /> down rgradient of the source area have consistently had elevated concentrations of residual <br /> hydrocarbons in groundwater. However, after 10 years of monitoring, the groundwater plume is <br /> largely limited to the source area. Analytical data indicate that WQOs have been achieved in <br /> down gradient wells. Groundwater within the source area will likely remain above WQOs for <br /> years to decades. The Fund recommends that the San Joaquin County LOP review this site for <br /> closure. <br /> Kirk Larson, P.G. Date 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 />