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r <br /> I . <br /> January 31, 1990 <br /> Job No. 1088-Q10-5 <br /> Mr. Gregory Fletcher <br /> Conoco Inc. <br /> 600 North Dairy Ashford <br /> TR 3038 <br /> I <br /> Houston,Texas 77079 <br /> SUBJECT: Quarterly Ground-Water Sampling Report <br /> ` December 1989 <br /> y Fast Gas Station <br /> i 9 800 E. Highway 12 <br /> Lodi, California <br /> Dear Mr. Fletcher: <br /> IMERODUCI-IOIN <br /> f T This report presents the results of the quarterly ground-water sampling which was conducted at tip Fast Gas <br /> Station,800 E. Highway 12, Lodi, California (see the Location Map, Figure 1), on December 30, 1989. The <br /> purpose of this sampling program is to monitor and evaluate the extent of hydrocarbon contamination in the <br /> y ground water at the subject property.64 <br /> $ <br /> F 9 <br /> SUMMARY <br /> t <br /> A summary of data regarding ground-water levels for the December, 1989 quarter is presented in Table A. <br /> Groundwater has fallen 3.8 feet in MW-20 since the last quarterly sampling, Ground-water flow for this quarter <br /> cannot be determined from only monitoring well MW-20. Crhemical analytical results;based on well MW-20, <br /> rtxrY indicate a stability in concentrations of petroleum hydrocarbons since the last quarter(see Table B and Appendix <br /> B). This site-is scheduled to be resampled during March, 1990. ' <br /> Respectfully submitted, <br /> t <br /> DU PONT ENVIRONMENTAL SERVICES <br /> Marjorie Lane David J. Blunt <br /> s Staff Geologist Registered Geologist C. <br /> RG 4516 <br /> �$ M1 ML/DJB:cb <br /> l <br /> LJ f <br /> ���d F� _•'"`.."�`°rn^ w...sx:mta.Wn.fis?.usar�. '...A::e�x.,.s.,.P��.. _ _ °^-•w-.'".a.v.'�.,,sF,G.y, , <br /> f_ <br /> t w - i - <br /> �•i f 4 t F s':.�LS :. 5 <br />