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�U PDNT <br /> ~ <br /> DL) PONT ENVIRONMENSu l X40 EOIATtOt:SERVICES <br /> 7068 Koll Center Parkway, <br /> Pleasanton,CA 94566 January 25, 1991 <br /> (415)462-7772 Job No-90-Q14-133 <br /> Fax:(415)462-7944 " <br /> Ultramar Inc. <br /> 525 West Third Street <br /> -- Hanford,California 93232 <br /> ATTENTION-,1 IQNt Membroff <br /> an Glenn R.ger, Marketing Environmental <br /> SUBJECT: Quarterly Ground-Water Sampling Report <br /> Fourth Quarter 1990 <br /> Beacon Station 695 <br /> goo South Cherokee lane <br /> Lodi,California <br /> Dear Mr.Dembroff' <br /> INI'RODtJCTION <br /> ,.. <br /> s re esults of the juarterly groundwater sampling which was conduc <br /> art resents the rted at Beacon <br /> Thi P P Lodi, C <br /> Station 695,located at 9alifornia (see the Location Map,Figure 1), ? <br /> 00 South Cherokee Lane, <br /> '_- December 18, lggp. Tht;purpose of this sampling Program is to monitor and evaluate the extent <br /> on Dec rn pert <br /> of hydrocarbon contamination in the ground water at the subject p I Y- <br /> SUMMARY <br /> ted in to re aiding ground-wesen <br /> ater levels for the fourth c1u titer 1790 i i sampling.line <br /> A summary of data g <br /> In,general,ground-water levels have risen approximately 1.7 feet since the hist quarterly <br /> t a <br /> ground-water gradient for this quarter is directed towards the south Ce aChemical magnitude <br /> ical <br /> approximately 0.009 foot Per foal(stet}ye Ground-Water Gradient Map,Fig <br /> see Table B and <br /> --results indicate concentrations of petroleum hydrocarbons continue to he msiximum in the area of MW- <br /> rations <br /> MSV-17 which contained 0.03 foot and 0.64 foot of floating product respective y_ithin the <br /> T <br /> Appendix R). Figure 3 presents interpretive isopleths of ben e boDERSicentriduring February 1991. <br /> - -- <br /> App <br /> water for the site. This site is scheduled for first quartersampling <br /> Better Things For Better Living <br /> f r <br />