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*?_AA` MEMORANDUM <br /> 4 <br /> 011 <br /> x 97 FE6 27 A I#,` i Pete <br /> eWoson <br /> TO: Allan Patton <br /> State Water ;3. <br /> Manager <br /> Resources <br /> Control Board << <br /> 2014 T Sa=t, <br /> MED. y <br /> Suite 136 .. <br /> sumtt nto,CA FRo1X s Richard Ralph Rempel <br /> 95814 u <br /> Malt Code" Regi tered Geologist No. 6089 <br /> (9:16)227-4396 DIVISION OF CLEAN WATER PROGRAMS <br /> FAX(916)227-4349 r <br /> DATE: F ' a <br /> 13IM <br /> .. ;a» ., t :�s�• ... A .._<• - ".. c =4:;. .: :-*•• ..s�''.,�� •.� '+-r ' • mss,...,.,,,.,_ •,�-ts..i�rw;r.•-+5.y:3,.�_:r�a��,.. ��+.t.a:-...• •, <br /> sglaJECT= DISPUTE SETTLEMENT AT FORMER TEXACO OW TOGO'S) <br /> AT 305 SOUTH HUTCHINS STREET,LOM I <br /> I <br /> Findings i <br /> - As the lead regulatory agency. inthe subject leaki.�n •under ound fuel tank(LUFT) <br /> caseSan Joaquil <br /> County Public Health Services;has-indicated its satisfaction with <br /> the progress of site investigation and remediation after more than five years of data <br /> collection and etluation; and after six months of active soil.vapor extraction, <br /> However,Regional Beard LUFT Program staff contends'that data are inadequate <br /> :and,thus, does not agree with the County's recommendation.for closure of the E <br /> <i <br /> T{5go's LUFT case. .. <br /> Although a gas station had operated at the site since 1926, gasoline has not been <br /> dispensed for neA rly 20 years, since the last stati6n closed in 1977. The remaining <br /> underground storage tanks were removed in 197$ In July 1.996, concentrations of <br /> residual benzene toluene, ethyl benzene, and xylene measured in groundwater <br /> beneath the"site.were."non-detect'�':in-all:four onsite monitoring wells.- 1Mothyl`v <br /> tertiary butyl ethbr(MTBE)has also been detected in these wells and in <br /> upgradient, offsite monitoring wells. It is generally understood that MTBE was <br /> not added to: 611 in California until 1979 at the. earliest. <br /> Thee site lies downgradient of an active service station. More importantly, the site <br /> :also lies within a0.n existing chlorinated solvents ptFlume reportedly emanating from <br /> soveral dry cleaning establishments;in Lodi which includes PCE ,TCE; <br /> chloroform, 1::,2-bCE, and 1,2-DCA;{dichlorc ethane) and which is being ' <br /> investigated mces:Controllead.andrDepartentofToxicSubstan <br /> 1?ecycleil:Aitper i�ur»fission is to Preserve.and enhance the guatity of and <br />'_ ensure their proper.allocatinn and Olilent usefor the benefit ofproent rrrtd future ene rt pns.. <br />