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Tcl . - <br /> A S S O C I A T E S T N C <br /> June 11, 1999 was calculated to -be 0.002 ft/ft or approximately 10.5 fthi le. A summary of <br /> groundwater monitoring data is presented in Table 1. <br /> CONCLUSIONS <br /> Concentrations from .wells .MW1 and MW3 remained consistent_ with the results from the <br /> ' previous sampling event. The.concentration of toluene decreased to nondetect in:well MW2. <br /> The direction of groundwater flow is consistent with the previou's.event..Groundwater.elevations <br /> have decreased since March 1999. <br /> 1 RECOMMENDATIONS <br /> { <br /> Based on thexesults of the., second. quarter:: 1999 monitoring .epi'sode,_ .`we recommend the <br /> following: . <br /> o Conduct the Third Quarter 1999 groundwater.monitoring and; sampling of wells MW 1 <br /> through.MW3 and analyze samples for TPHg, BTEX, and oxygenate fuel,additives. <br /> Please contact our office at(209) 579-2221 if you have any questions•or.comments. <br /> Respectfully submitted, <br /> ATC.Associa es Inc. <br /> Drew Van Allen <br /> Staff Scientist i= <br /> ,.,: a # <br /> �S 4a A (,/4Vi f rpt-Y <br /> Jeanne Homsey, <br /> CA Registered Civil Engineer No. 47410 <br /> cc: Mr. James Giottonini_, City, of Stockton Department of Public Works <br /> Mark List,RWQCB <br /> i <br /> w:\62574\62574.05\quartly\2gr-1999Aoe 3 <br /> - <br /> 1 - <br />