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10 INTRODUCTION <br /> • <br /> On behalf of the San Joaquin Catholic Cemetery, Ramage Environmental has prepared this <br /> Groundwater Monitoring and Extraction Report First Quarter 2004 for submittal to the San <br /> Joaquin County Environmental Health Division (EHD) and the Central Valley Regional Water <br /> Quality Control Board (RWQCB) <br /> This report documents quarterly groundwater monitoring, sampling and analysis for the Fourth <br /> Quarter of 2003 and the First Quarter of 2004, and three monthly groundwater extraction events <br /> for January, February and March 2004 The groundwater extraction scope of work was outlined <br /> in Ramage Environmental's Work Plan for Groundwater Extraction, dated June 20, 2003 EHD <br /> approved the work plan on September 16, 2003 <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 building (Figures 2 and 3) <br /> 12 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 /> elevations since well installations in the early 1990s resulted in the groundwater table above the <br /> screened intervals of the five original groundwater monitoring wells The rise in groundwater <br /> ' elevations also resulted in static groundwater entering the deep soil vapor extraction wells <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 Soil vapor extraction and air sparging were recommended as <br /> the most efficient and practical remedial alternatives <br /> 3 <br />