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INTRODUCTION <br /> This Annual Groundwater Monitoring Report has been prepared by American <br /> Environmental Management Corporation (AEMC) for Newark Sierra Paperboard, <br /> Corporation (NSPC) to investigate the groundwater conditions at their facility (site) <br /> located at 800 West Church Street, Stockton, California. <br /> This report has been prepared in response to a request by the California Regional Water <br /> Quality Control Board-Central Valley Region (RWQCB-CV) to monitor the existing wells <br /> located adjacent to a 5,300 barrel, below ground concrete storage tank for the presence of <br /> petroleum hydrocarbons in the groundwater. Figure 1 illustrates the site location, and <br /> Figure 2 shows the locations of the wells. AEMC installed Monitoring Wells MW-1, 2 and <br /> 3 on 16 December 1988; and, Monitoring Well MW-4 on 27 March 1990. The wells are 2- <br /> inch diameter and are constructed of Schedule 40, Polyvinyl-Chloride (PVC) pipe. The <br /> PVC slotted screen was approximately 5-feet long except for MW-4 which had a screen <br /> length of 10-feet. The top of the screened interval began at depth 25.5 feet in MW-1, <br /> 25 feet in MW-2, 24.5 feet in MW-3 and 15 feet in MW-4. The previous sampling of the <br /> monitoring wells was completed by AEMC on 14 March 1991. <br /> rmpm(wz) Page 1 <br /> AMERICAN <br />