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{ <br /> f <br /> r <br /> 1.0 INTRODUCTION <br /> Ramage Environmental has prepared this Groundwater Monitoring Report for the Fourth Quarter <br /> i, of 1998, as requested by Mr. Al Vigil of the San Joaquin Catholic Cemetery. The scope of work <br /> 1 was reviewed and supervised by Mr. Harlin Knoll of the San Joaquin County Public Health <br /> Services Environmental Health Division (PHSIEHD). The cost to complete the scope of work <br /> was pre-approved on February 25, 1998 by the Underground Storage Tank Cleanup Fund <br /> (USTCF), under Claim #1092. <br /> 1.1 Site Description <br /> The subject property is an operating cemetery located on the northeast corner of Harding Way <br /> * and Cemetery Lane in the city of Stockton (San Joaquin County), California (Figure 1 - Site <br /> j Location Map). The project site is located on the east side of the mausoleum building (Figure 2 <br /> —Site Plan). <br /> 1.2 Previous Work <br /> To date, two underground gasoline storage tanks (UST) and associated pumping equipment <br /> have been removed from the site. Based on evidence of impacted soil and groundwater <br /> beneath the site, a total of seven groundwater monitoring wells, two soil vapor extraction wells <br /> and two soil vapor extraction well nests have been installed. No active soil or groundwater <br /> remediation has been conducted at the site. <br /> Groundwater has been sampled at the site since August 1990. A dramatic rise in groundwater <br /> elevation since well installation in the early 1990s has resulted in groundwater table levels above <br /> the screened interval of the five groundwater monitoring wells. The rise in groundwater <br /> elevation also resulted in static groundwater entering the deep soil vapor extraction wells. <br /> During the summer of 1996, sampling of the groundwater monitoring wells was discontinued and <br /> sampling of the deep soil vapor extraction wells begun. <br /> On May 20, 1998, Ramage Environmental published a Problem Assessment Report and <br /> Con-ective Action Plan for the site. Soil vapor extraction and air sparging were recommended as <br /> the most efficient and practical remedial alternatives. <br /> 1�� 1 <br /> I <br />