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� IHTRo88cTI6H�I 't <br /> 1.1 Historical Review _ <br /> The Fallow lug report describes LEE85HILL-HLRKENRilFF, 1NC ed (L0 site <br /> Investigation at a farmer uddergruund fuel tank facility located at 102 South <br /> Wilson Nay in Stacktan, Caii farnla (sae Figure ]1. The sit. was formerly <br /> occupied by a gasoline service station;all tanks and appurtenances were removed <br /> - in late 1978. <br /> J An initial site assessment was conducted by Balbi A Chang Associates, Inc. (BCA) <br /> Sn Apr11 f 198e wlthout contacting or obtaining appropriate permits from the <br /> San d" of County Public Health Services.- Cunseguently, the-initial site <br /> assessment had to be repeated and the results were prasente4 in a 8[A report <br /> 1 dated April 26; 1489. in BLA's tudies, four soil borings and three monitoring <br /> ll wells were Installed. The AprSl 1989 report Igdicatcl same detectable BT%6F <br /> E {e.gasol,ine)uino thalsoilanandt Syr ondwate�a sa plectbutl they final hconclusions .. <br /> 0 Ined conflicttng information (seo sntion 2.2 Previous Investigations). <br /> Mll Ir <br /> in <br /> June of Oeaedslee land raquested 9 LH was contracted <br /> ac conduct <br /> an addltlonai!site Innal vestlgati n touverify <br /> I the presence or absence.oF.sail and/or groundwater c ntaminatian land, If <br /> -� necessary,proVide'Information regarding the vertical and lateral extent of such <br /> ca Conan,net len. <br /> LH suhmi tted a prallmi nary rove gatlon workplan to the Reg lao5l Water Quality <br /> _i Control Board t11116)an September ll,1989. A copy of[his workpplan,along with _ <br /> a well drlliing permit application, was sent to Public Ilealth'services, $an <br /> Joaquin Launty. [onments From RWQCB were received en octaber 16, 1989. Approval <br /> was given under the ccndltla that the comments were addressed. Permit approval <br /> - <br /> was received on October 18, 1989. _ <br /> On November t6 and 17,1989,sail samples were collected by LH From five,6-Inch <br /> L; diameter hollow-stem angered horahoIs.located on the site. On November 21 and - <br /> November 28, 1989, LH installed two, 4-t hdiameter-groundwater monitoring <br /> wells. Groundwater samples re carlected cfrom these two monitorin wells-as <br /> a9. 'I'll's <br />. ember 7 t9 All <br /> were as three existing ,are <br /> we; on Uec. P <br /> s re <br /> cencluslons, and l recomoendatlons of this sites investigation ants the findings; <br /> Ij :j <br /> •1- <br /> i3l <br /> f <br /> I�. <br />