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' Sarale Farms, Inc. <br /> - 3 _ August'15, 2011 <br /> Remediation Summary <br /> • Free Product: No free product was documented throughout the life of this case <br /> • Soil Excavation: An unknown of impacted soil was removed and disposed offsite in <br /> 1992 ; <br /> • In-Situ Soil/ Groundwater Remediation: No remediation has been conducted; in-situ« <br /> chemical oxidation pilot test proposed,in a August 2010 work plan y <br /> —'4:. fir..-liar <br /> w � <br /> General Site Conditions <br /> • . Geology and Hydrogeology: The Site is underlain by interbedded and intermixed sand, <br /> silt and clay. .The depth to groundwater varies seasonally between 3 to 6 feet bgs and <br /> the groundwater gradient is southwest at 0.009 feet/foot. <br /> • Groundwater Trends: There are more than 8 years of groundwater monitoring data for. <br /> this Site. Benzene trends are shown below, source area (MW-1) and down gradient <br /> (MW-2) r <br /> BENZENE Results for MW1 <br /> nsoo. <br /> 4000 <br /> 3600 <br /> 31100 o <br /> _2500` t ' <br /> 500 <br /> A" <br /> e Sao v i' _+ <br /> - -BENZENE Tmnd- <br /> BENZENE Results for MW2 l� <br /> si 1400 <br /> 12001 - I <br /> 1000_ _ _ 1..__- ___ _. ...... ---- <br /> i <br /> Boo <br /> 400 <br /> zoo� •�� - `�� -�' ,-..+.w'��!!�, <br /> o <br /> --UrNZENe Trend <br /> Risk Evaluation _ <br /> No human health risk assessment has been noted in Geotracker. There are no water supply <br /> wells or surface water receptors present within 2,000 feet of the Site. <br /> Recommendation , - <br /> July 2010, the Fund recommends that the San Joaquin County LOP direct the Responsible <br /> Party to assess remedial technologies that will achieve Water Quality Objectives in a timely and <br /> cost effective manner. The Fund will review this site next year to track progress. <br />