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'CVvATC <br /> • A S S O C I A T E S I N C <br /> by EPA method 624 and 625, prior to the discharge into the sewer system ATC is collecting a <br /> sample on January 28, 2003 and analyzing the sample for these parameters on an expedited <br /> turnaround tune The results will be provided to the City of Stockton upon receipt <br /> SELF-MONITORING RESULTS <br /> From the date of its startup, December 20, through December 27, 2002, the groundwater <br /> treatment system had an average flowrate of 0 65 gallons per minute (gpm) and 939 gallons per <br /> day (gpd) The LEL did not exceed 10% during the monitoring period Final treated <br /> groundwater samples (Effluent) collected on December 27, 2002, contained no detectable <br /> concentrations of TPHg, BTEX, MTBE, ETBE, TBA, TAME, DIPE, 1,2-DCA, or EDB Results <br /> of the monthly self-monitoring program are summarized in Table 1 and analytical data is <br /> attached <br /> If you require any additional information, please contact our office at (209) 5 79-2221 <br /> Respectfully submitted, <br /> ATC Associates Inc <br /> 3"", ,JLA— <br /> Drew Van Allen <br /> Senior Project Manager <br /> t y9 <br /> Jeanne Hornsey, P E <br /> CA Registered Civil Engineer No 47410 <br /> cc Mr and Mrs Raymond Farmer <br /> W Iwordpro1625961reportslwaterdischarge112_02 doc 2 <br />