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1.0 INTRODUCTION <br /> On behalf of the San Joaquin Catholic Cemetery, Ramage Environmental has prepared this <br /> Groundwater Mondonng Report, Second Quarter 2003 for submittal to the San Joaquin County <br /> Environmental Health Division (EHD) and the Central Valley Regional Water Quality Control <br /> Board (RWQCB) This document also includes a re-print of the work plan to conduct batch <br /> groundwater extraction to attempt to reduce the residual concentrations of methyl tertiary butyl <br /> ether(MTBE) remaining in groundwater beneath the site This work plan was previously <br /> submitted in the last quarterly groundwater monitoring report <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) The <br /> project site is located on the east side of the mausoleum budding (Figures 2 and 3) <br /> r <br /> ' 1.2 Previous Work Summary <br /> On November 17, 1989, two underground gasoline storage tanks (UST) and associated <br /> pumping equipment were removed from the site Between August 1990 and April 1995, based <br /> on evidence of impacted soil and groundwater beneath the site, five groundwater monitoring <br /> wells, two soil vapor extraction wells and two soil vapor extraction well nests were installed <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 resulted in groundwater table levels above the <br /> screened interval of the original five groundwater monitoring wells The nse in groundwater <br /> elevation also resulted in static groundwater entering the deep sod vapor extraction wells <br /> i <br /> On April 28, 1998, Ramage Environmental installed two additional groundwater monitoring wells <br /> (MW-6 and MW-7) to re-establish a groundwater table monitoring and sampling capability <br /> On May 20, 1998, Ramage Environmental published a Problem Assessment Report and <br /> Corrective Action Plan for the site Sod vapor extraction and air sparging were recommended as <br /> the most efficient and practical remedial alternatives On September 8, 1998, the USTCF pre- <br /> approved the cost to construct and operate a sod vapor extraction and air sparging system at the <br /> site The San Joaquin Catholic Cemetery contracted with ENSR Consultants (ENSR) to <br /> complete the pre-approved scope of work <br /> . 3 <br /> r <br />