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1 <br /> twell MW-1 at concentrations of 2 9 and 0 5 These concentrations are below <br />' their respective MCLS of 6 0 µg/1 and 10 0 µg11 <br /> Bis (2-ethylhexyl) phthalate (BEP) was detected in two monitoring wells, MW-1 and <br />' MW-2 at concentrations of 50 µg/l and 46 µg11 respectively Both these concentrations <br /> exceed the Primary MCL for BEP of 4 0 µg/1 It should be noted that the laboratory <br />' reporting limit for BEP was 10 0 µg11, which is above the established MCL of 4 0 µg/l <br /> Additionally, BEP is a common constituent in plastic and glass materials and is often <br /> considered an outside contaminant when detected at low concentrations in groundwater <br />' samples <br />' The following dissolved metals were detected in groundwater samples from the newly <br /> installed monitoring wells at the site. <br />' • Arsenic, • Nickel, <br /> • Barium, • Selenium, <br /> 1 <br /> • Chromium, • Vanadium, <br />'. • Molybdenum, • Zinc <br /> 1 <br /> There are currently no Primary MCLs listed for molybdenum, vanadium, or zinc None of the <br />' metals concentrations detected in groundwater samples from the monitoring wells exceed their <br /> respective MCLs <br />' Groundwater elevation contours indicate a northeasterly groundwater flow across the site <br /> Monitoring well MW-1 was situated as an upgradient well from the former UST location The <br /> purpose of this well was to establish upgradient groundwater quality and to assess the potential <br /> for contaminants to be migrating onto the site from an upgradient offsite source Both TPH as <br />' diesel and other chlorinated solvents were detected in this well <br />' 7.0 CONCLUSIONS AND RECOMMENDATIONS <br /> Based on the previous environmental data generated for the site and the information from current <br />' site investigation activities, URS has made the following conclusions and recommendations <br /> I <br /> r ' <br /> 13 V\Goodwin ProctoffinaiReport doc <br />