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.b <br /> i <br /> DOM <br /> fi Color Spot, Inc. 6 D <br /> February 14, 1990 (88168C) <br /> . w <br /> ; f reportedly contains as many as seven USTs may be a source of the upgradient <br /> !r: benzene contamination. Given the fact that diesel fuel contains less than 0.20 <br /> percent benzene and that not even trace concentrations of benzene have been found <br /> in any soil samples collected at the site, we believe that upgradient benzene <br /> f ;A contamination of the ground water wells caused by the Color Spot facility is s <br /> highly improbable. <br /> F <br /> SGD recommends that Color Spot, Inc., not be required to implement <br /> a ground water investigation and that SJLRD investigate other possible sources <br /> of the benzene contamination. SGD also recommends that the previously suggested <br /> ii quarterly well monitoring program <br /> (Soil Vapor Study, Color Spot, Lodi, <br /> California, October 1989) be discontinued by Color Spot. <br /> N 1 C14SURE <br /> We will be pleased to meet with Color Spot staff and any concerned <br /> regulatory agency to discuss the results and recommendations described herein. <br /> This letter-report has been prepared for the exclusive use of Calor Spot, Inc., <br /> with specific application to the site remediation and water well sampling program <br /> conducted at the subject property. The program was conducted in accordance with i <br /> generally accepted environmental protocols. No other warranty, express or <br /> ( implied, is made or suggested. Should you have any questions, please contact the <br /> undersigned or Mr. Gerald Hels of our staff. �. <br /> Sincerely, f <br /> STAAL, GARDNER & DUNNE, INC. <br /> � h i <br /> vol <br /> a ; <br /> s r 3 <br /> h <br /> 7 <br /> M1, � David A. Gardner f <br /> Certified Engineering Geologist 969 <br /> a <br /> DG:J s:is/24 <br /> ..j <br /> M.; <br /> x 4 5 <br /> i <br /> y^ 1 � <br />