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1 <br /> 1 <br /> x Catogicat reC/'.lZlCS lac. <br /> 1101 Th Street <br /> Modesto,California 95354 <br /> (209)522-4119/Fax(209)522-4227 <br />� r <br /> REPORT <br /> Groundwater Monitoring <br /> 2"a Quarter 2003 <br /> City of Escalon <br /> Former Arco Gas Mini Mart <br /> r1305 Escalon Ave. <br /> �+ Escalon, CA <br /> I <br /> Project No. 750.2 <br /> July 22, 2003 <br /> o <br /> EXECUTIVE SUMMARY <br /> I <br /> This report summarizes the 2"d Quarter 2003 groundwater monitoring and sampling event <br /> that took place at the site on June 5, 2003. Fourteen monitoring events have been <br /> completed to date since the groundwater investigation was initiated in April 2000. <br /> Groundwater samples collected during the June 2003 monitoring event were non-detect for <br /> all analyzed constituents. <br /> • MWA has been non-detect for TPH-G for four consecutive events <br /> •' . MW-2, MW-3 and MW4 have been non-detect for all analyzed constituents since their <br /> installation in 2000 <br /> MW-5 has been non-detect for all analyzed constituents for six consecutive events <br /> • The deep well MW-101 was non-detect for the ninth consecutive event <br /> The groundwater gradient for June 5, 2003, is 0.0026 ft/ft flowing N74°W. This is <br /> consistent with past events (see Figure 4). Depth to groundwater at the site was <br /> approximately 63-feet below ground surface (bgs). The average elevation of groundwater <br /> r for the June 2003 monitoring event was 56.96 feet above mean sea level. <br /> L.� <br /> L <br />