Laserfiche WebLink
t- J <br /> The Customer Company -4 - January 30, 2012 <br /> Recommendation <br /> May 2008, the San Joaquin County LOP has directed the Responsible Party to define the extent <br /> of contamination west of the site. The Fund concurs and will review this site next year to track <br /> progress. <br /> UPDATED, May 2009, the Fund recommends that the San Joaquin County LOP consider <br /> reviewing this site for closure. <br /> UPDATED, February 2011, the Fund recommends that the San Joaquin County LOP review <br /> this site for closure. <br /> UPDATED, February 2012, source area monitoring well MW-4 has historically had elevated <br /> concentrations of residual hydrocarbons in groundwater. However, after 23 years of monitoring, <br /> the groundwater plume is shrinking in size and concentration. Analytical data indicate that <br /> WQOs have been achieved in down gradient wells. Water quality objectives have nearly been <br /> achieved in all wells. The affected shallow groundwater is not used as a source of water supply <br /> nor is it likely to be used as a source of water supply in the foreseeable future. Water users in <br /> the vicinity of the site rely on the City of Tracy Public Works. Based on facts in the record and <br /> hydrologic and geologic conditions at the site, the limited residual petroleum hydrocarbons that <br /> remain in soil and groundwater pose a low risk to human health, safety and the environment. <br /> The Fund recommends that the San Joaquin County LOP review this site for 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 />