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, •- ' F 6MA mayIN,'I. <br /> Ultramar <br /> UIlram 4 py_Ins. 7eleco 209.584.6113 crodit&wholesale <br /> F I <br /> P.O.Box 466 209-583.3330 Administrative <br /> +• 525 W.Third Street <br /> arv 209.583.3302 Iniormahfln Satviees <br /> -0466 <br /> Harford,CA 93232 4 t i 1 . <br /> 'e (209)582.0241 t..s*-;,, „��,, r a_,, ,;,�' 200.583.3358 Accounting <br /> f SEP 2 1 IM <br /> i E t=WRON y^LWAL FIEALTH <br /> PERMIT/SERVICES <br /> September 5, 1990 <br /> k <br /> Mr. Thomas Peltier <br /> _ Regional Water Quality Control Board p <br /> Centra] Valley Region <br /> I 3443 Routier Road <br /> Sacramento, California 95827-3098 <br /> � � I <br /> SUBJECT: WORK PLAN FOR SUBSURFACE ENVIRONMENTAL INVESTIGATION AT BEACON <br /> STATION 696. 800 FAST HIGHWAY 12, LODI, CALIFORNIA # <br /> Dear Mr. Peltier: <br /> 1n response.to your letter to us dated August 17, 1990, we have prepared <br /> ,i the enclosed Work.Plan :summarizes additional work necessary to evaluate <br /> the presence of hydrocarbon constituents in the deep ground water beneath <br /> :the above-referenced site. The proposed work will be performed by an <br /> -� enviranmental,cansuitarat selected by Ultramar and includes drilling out <br /> i and properly abandoning 5 wells at the site (MW-1 through HW-5), drilling , <br /> three soil borings at the site to a depth of approximately 70 feet each; <br /> collecting soil "samples from the borings for visual inspection and <br /> laboratory analysis; constructing a 4-inch-diameter ground-water <br /> .monitoring well in each boring; purging the monitoring wells and <br /> collecting water samples for laboratory analysis; evaluating the <br /> jgroundwater flow direction and gradient using data obtained from the <br /> ' wells, and preparing a technical report documenting field methodology and <br /> presenting-findings, conclusions, and recommenuations. <br /> As you are aware, -the site has a very long history of envircomertal <br /> activity. , AFproximately 30 monitoring wells of various deaths and casing <br /> sizes Were.'drilled at the site prior to Ultramar's acquisition of the <br /> property,in Ju! 1990: As of the third quarter 1988, all but one well at <br /> the site:(�14f-20) was dry. <br /> J <br /> all N <br /> BEAC <br /> A Member of the Ultramar Group of Companies rt Quality and service <br /> r <br /> e <br />