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v <br /> A S S o C 1 A T E S I N C <br /> by EPA method 624 and 625, prior to the discharge into the sewer system ATC collected a <br /> sample on January 28, 2003 and analyzing the sample for these parameters on an expedited <br /> turnaround time <br /> SELF-MONITORING RESULTS <br /> From the date of its startup, December 20, 2002, through January 31, 2003, the groundwater <br /> treatment system had an average flowrate of 0 83 gallons per minute (gpm) and 1,191 gallons per <br /> day (gpd) During January 2003, the groundwater treatment system had an average flowrate of <br /> 0 89 gpm and 1,279 gpd The LEL did not exceed 10% during the January 2003 monitoring <br /> period <br /> Final treated groundwater samples (Effluent) collected on January 10, 2003, contained no <br /> detectable concentrations of TPHg, BTEX, MTBE, ETBE, TBA, TAME, DIPE, 1,2-DCA, or <br /> EDB Final treated groundwater samples (Effluent) collected on January 28, 2003 indicate that <br /> pH was within the required range and total cadmium, chromium, copper, lead, nickel, zinc, and <br /> total toxic organics were less than the discharge limit Results of the monthly self-monitoring <br /> program are sumrnanzed in Table 1 and analytical data is attached <br /> If you require any additional information,please contact our office at (209) 579-2221 <br /> Respectfully submitted, <br /> ATC Associates Inc <br /> Drew Van Allen <br /> Semor Project Manager <br /> Je rHomse <br /> y, P E <br /> CA Registered Civil Engineer No 47410 <br /> cc Mr and Mrs Raymond Farmer <br /> w lwordprol625961reportslwarerdtscharge101_03 doc 2 <br />