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mi <br /> MM <br /> .. <br /> November 1990 .10_ M&8168D <br /> Benzene was found in trace concentrations in the January 9,1990, .�., <br /> 7 <br /> irrigation/domestic g-round water well samples. However, benzene concentrations �•; <br /> f were not detected in any of the following: <br /> • Confirmatory soil samples collected from the floor and walls ; <br /> of the UST excavation on January 9, 1990, <br /> I <br /> • Soil samples collected during the supplemental site assessment <br /> (October 8 and 9, 1990), and <br /> i r <br /> i <br /> • Ground water sample collected from Within the hollow stem <br /> auger at DH-2 during the supplemental site assessment (October <br /> 8 and 9, 1990). <br /> 7F' 'Therefore, it is our opinion, this ground water contamination is the result of <br /> a source other than the former UST at the site or may represent a naturally <br /> occurring condition. <br /> ` SGD recommends that no additional site characterization of <br /> hydrocarbon contamAnzted ground water be conducted at the site by.Color Spot,. <br /> r Inc. , the existing ground water monitoring well be abandoned, and the site be <br /> ' granted closure status, in regards to ground water.contamination, by SJLHD.. <br /> r CLOSURE <br /> i 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 /> The report has been prepared for the exclusive use of Color Spot,Ine., with <br /> Specific application to the.-site .remediation and,water sampling t <br /> p g program <br /> conducted at the subject property. The program was conducted in accordance with <br /> x <br /> generally accepted environmental .protocols. No other warranty, express or <br /> implied, is. made or suggested. � , f <br /> i <br /> v i I <br /> �77it a - ----- - - -- — -- ----- ---- — ------- ----- ---- ---- ---- ---- <br /> k , <br /> 4 <br /> JWN0� - <br /> n'e a � <br />