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V1117 Lone Palm Suite B <br /> Modesto California 95351 <br /> www atc-envi ro Com <br /> 2095792221 <br /> Fax 209 579 2225 <br /> A S S O C I A T E S I N C <br /> October 4, 2001 0 C T 0 8 Z 0 Q <br /> 54 17292 0001 ENVIRONMENT HEALTH <br /> PC 'rwr'c <br /> ra <br /> Mr Jeff Wong <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Street, Third Floor <br /> Stockton, California 95202 - - <br /> Subject Fourth Qu r 2000 undwater Monitoring Report and Workplan for Adgi#conal <br /> Subsurface In on, Franklin High School, 300 North Gertrude Avenue, -� <br /> Stockton, California <br /> Dear Mr Wong <br /> • ATC Associates Inc , on behalf of the Stockton Unified School District, has prepared this letter to <br /> serve as a Fourth Quarter 2000 Monitoring report and a workplan for additional subsurface <br /> investigation for the subject site (Figure 1) <br /> INTRODUCTION <br /> ATC's activities during the Fourth Quarter of 2000 included monitoring the water level and <br /> collecting groundwater samples from on-site monitoring well MW-1, analyzing the collected <br /> groundwater samples for petroleum hydrocarbon constituents, and preparing this quarterly <br /> monitoring report <br /> GROUNDWATER MONITORING <br /> Groundwater Monitoring and Sampling <br /> On November 28, 2000, ATC personnel conducted quarterly monitoring and sampling at the <br /> above referenced site The well was monitored, purged, and sampled in accordance with ATC's <br /> Site Safety Plan and Quality Assurance/Quality Control Plan (QA/QC Plan) submitted to <br /> PHS/EHD on February 1, 1999 <br /> The groundwater level in the monitoring well was 56 01 feet below grade, indicating a decrease in <br /> the water table of 1 21 feet since water depth was last measured in September 2000 The <br /> groundwater monitoring data are summarized in Table 1 <br /> w 40"tpro117292\t7292 oiUteportsA qnY 2000 aoc 1 <br />