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ow. g4W"w0gpU.P' �tmpm wwtiwlwo <br /> p - <br /> P <br /> ab <br /> Applied GeoSystems <br /> .1141�T I'nttirr Snn Rrr.ui, �u r.rrtrrn'er. {�� , <br /> { • S. (-PA'.1F�TU • CULVER Clil' • S1N IC)ti[ <br /> • FRF�10ti'T • IRVINF • HOUSTON • 61�5T(lti _ <br /> _�_--_- <br /> ,,lay 24, 1991 <br /> AGS 30008-4W <br /> Mr. Chuck Carmel <br /> ARCO Products Company <br /> P.O. Box 5811 <br /> San I`faien, California 94402 <br /> Subject: Addendum to WO Plan for a Subsurface Investd'g C�liforn 3RC0 Service <br /> Station No. 2076, 800 East };ettleman Road, Lo <br /> Mr. Carmel: <br /> At the request of ARCO Products Company ;ARCO), Applied GeoSvstems, Inc. <br /> (Applied GeoSy <br /> stems) is submitting an addendum to our previous work plan Na. 30008- <br /> ional work <br /> 1W , dated rep vapor extraction we0. llstin the borings!and performing a vapor-extraction <br /> udes drilling three soil borings, <br /> installing three vapor <br /> test. The purpose of the additional work is to evaluate whether remediation of <br /> hydrocarbons in native soil underlying the ne is feasible <br /> soil ibles y vapor <br /> tractiso . The datf a <br /> will be used to evaluate remedial alternatives <br /> warranted. ARCO Servi�eStation No. 2076 is located on the southwest corner of the <br /> Lane <br /> i tLane and Iighway 99�in Lodi Californiacas shownon <br /> intersection of East Kettn <br /> an <br /> the Site Vicinity hlap (Plate P-1). <br /> he site in October 1990 to conduct a preliminary' <br /> tank <br /> Applied GeoSystems was at tborings <br /> replacement investigation. �ltank cavit bsevathe drnd thelling, of prop sed tank cavity locations shown on <br /> 5) near the existing gasoline <br /> the Generalized Site Plan (Plat hydrocarbons 2) , esults noof the t pre <br /> sent inctober �the nsoil taround the <br /> indicated that residual gasoline <br /> perimeter of the existing tank cavity or near the proposed tank cavity at concentrations <br /> that warrant remediation. However, hydrocarbons may be present me� iso.junderlying the <br /> existing underground-storage tanks at concentrations requiring <br /> s in <br /> To investigate the feasibility�three vaporoext act on wsing vapr extraction tlisr(shawnton1Plaie P 2)nand soil <br /> below the site, we will instal <br /> i conduct a vapor-extraction test using the wells. Our procedures for well installation and <br />--- — -- <br /> _.- - ----conducting a vapor-extractior..aest_are_discussed under Field h et o s. <br />