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c, <br /> 1117 Lane Palm Avenue <br /> --Suite 13- <br /> Modesto, CA 95351 <br /> 209.579.2221 <br /> Fax 209.579.2225 <br /> ASSOCIATES I INC . <br /> April 12, 2000 <br /> 17292.0002 <br /> Mr. Jeff Wong <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E. Weber Street, Third Floor <br /> I <br /> Stockton, California 95202 <br /> Subject: First Quarter 2000 Groundwater Monitoring Report, Stagg High School, 1621 <br /> Brookside Road, Stockton, California <br /> Dear Mr. Wong: <br /> ATC Associates Inc., on behalf of the Stockton Unified School District, has prepared this letter <br /> to serve as a First Quarter 2000 Monitoring report for the subject site (Figure 1). <br /> INTRODUCTION <br /> ATC's activities during the First Quarter of 2000 included monitoring water levels and collecting <br /> groundwater samples from on-site monitoring well MW-1, analyzing the collected groundwater <br /> samples for petroleum hydrocarbon constituents, and preparation of this quarterly report. The <br /> location of the well is shown on Figure 3. <br /> GROUNDWATER MONITORING <br /> Groundwater Monitoring and Sam lin <br /> On March 15, 2000 ATC personnel conducted quarterly monitoring and sampling at the above <br /> referenced site. The well was monitored, purged, and sampled in accordance with ATC's Site <br /> Safety Plan and Quality AssurancelQuality Control Plan (QA/QC Plan) submitted to PHS/EHD <br /> on February 1, 1999. <br /> The groundwater level in the monitoring well was measured at 8.82 feet below grade, indicating <br /> a rise in the water table of 3.13 feet since water depth was last measured in July 1999. The <br /> groundwater monitoring data are summarized in Table 1. <br /> w:117292.0002Veportsu qmr 2000.doc l <br />