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TEL No Mar 12.97 12:37 No .007 P.11 <br /> ll1Si�U.ThOSEETTLFWNT,FnRNMTIsXACO .2- 3 Mamh 1197 <br /> 3o5SALITH MJTC11lN5;STREEI <br /> J.t)1)t,SATs J(�A(1t:TJld(:t�'UNTY. <br /> cxcltasively.. 01of ded gasoline'was first used in 1975.) The highest concentration orDOA within <br /> the scilvent°plume wel,e detected in MW-I on Togo"s property. <br /> The soil investigation at the T sit,w ec incornplctc, Additional>investigatton;vf DCA and volatis <br /> organic in st if at T09A is ncccssary in corder for the C:ity'ofLodi,OTSC and the:Rieg'0 1Acturd <br /> to eliminate the TOP'S site aS-4 possible source of DCA within the Lodi solventpltir>tae: <br /> . Jean Young;of C,author of the 4 Nd. vember 1996 letter,required the 1 ttgo's responsible pan' <br /> To Ontinuc semi-annual monitoring of the.wells and conduct a soil gas inveattgat on.0r.*0 property. <br /> 5, Should the r+espo risible ptirties for the Togo's site fail to complete the add tional.soil invcstigat on <br /> requested by Board.:, and show that I)C"A, not present in the;.subsurfmce sail at their sites they <br /> All remain a,possible$ource of LxCA The City of Lodi and.DT$( will require that the Togh'a <br /> rmpoilsiblc partt+r participate in the larger solvent plume investigation and cleanup: <br /> 6< TheTogv's site is=downgradicnt of another service station owned by Mel`Hokides Petroleum: <br /> (00k desk and formerly operated by Texaco. This site also has groundwater contamination Iforn an <br /> underground tank release of gasoline and is a possible source of the MTBE found in the groundwater <br /> tit the Togo's site. The Hokides site,alone or cornnungl d with contamination from the Togo's site. <br /> is a passible source of gasoline and J A at the Togo's site. <br /> 7 if,by completing the soil investigation,the Togo's site can be ruled out as source of DCA, thew. <br /> a. It may"be less expensive for Bokides to take responsibility f or one or more of Toga's <br /> monitoring wells,than it would be to install new wells, Several of the Togo's wells are for <br /> monitoring the Bokides plume <br /> b. It may also be less expensive for the City of Lodi to use some of:the Toga's wells in their <br /> investigation of the solvoni plumo <br /> S. We.believe our recommendations In the 2 November 1996 letter and memos are:ct>nw and <br /> recommend that`I zgts's complete the additional soil investigation for the presence of DCA Ii'apne <br /> is(bund thea must maintain theirmonitoring,wells until: <br /> a. They receive:aaclfurther action determination from the Regional,Board and,release from <br /> itY.b-y.1Y1.*f%C%by.1 ;1.*f%C and <br /> h 13okdes and the City Pfjl-odi have had an opportunity to determine whetltcr the atly or toll ortlie. <br /> we11s wc�vld be suitable ftir inotutormg..theirir plumes and subsequently take:.responsibility for <br /> >x>Ripta ning and.monitoring the wells. Texaco's involvement in bath thellIegu's arld OokidCs <br /> sites,may fiaicilitate ransi'er of responsibility for the Togo's wells. The Togo's responsible <br /> parties would not rrtaintairx liability or responsibility for the wells All other wells r+statied by <br /> the responsible partics would be destroyed. <br /> Atttailaticut fl <br /> MAR <br /> EWIRONWNML <br /> WITISERt/ICES <br />