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i <br /> "';_T �"� -3= June 19 2008 <br /> , Walter Shockley <br /> Claim No. 9384 <br /> D. Groundwater Trends: <br /> •. TPH-D trends are shown below 4 <br /> Claim 9384 <br /> 1600000 <br /> 1400000 <br /> c 1200000 <br /> 3 1000000 it -+—MW-1 <br /> p 800000 <br /> = 600000 MW-4 <br /> a. <br /> 400000 <br /> 200000 <br /> 0 <br /> d O O O O O O O O O , <br /> L_ Q U_ Q LL Q LL Q LL Q <br /> Time <br /> Vil. SENSITIVE RECEPTOR SURVEY: six'wells identified within Y2 mile of the site <br /> VIII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: retail gasoline station. <br /> B. Site History: the extent of groundwater contamination is defined. <br /> C. Groundwater Monitoring Summary:- strong monitoring history , <br /> D. Remediation Summary: ozone sparging <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: Free product is likely present in the vicinity of MW-1 and <br /> MW-4. The Fund recommends that the San Joaquin County LOP direct the <br /> Responsible Party to assess remedial techniques that will identify remaining <br /> sources of free phase petroleum and recover it to the extent feasible. The Fund <br /> will review this site next year to track progress. <br /> Kirk Larson, P.G. Date Robert Trommer, C.H.G. Date <br /> Technical Review Unit Chief, Technical Review Unit <br /> (916) 341-5663 (916) 341-5684 <br /> i <br /> California Environmental Protection Agency <br /> �.a Recrded Paper <br />