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4m <br /> t <br /> b K <br /> Ei <br /> A S S O C I A T E S I N C <br /> 1 <br /> t <br /> SELF-MONITORING RESULTS <br /> From the date of its startup, December 20, 2002, through February 23, 2004, the groundwater <br /> treatment system had an average flowrate of 0 56 gallons per minute (gpm) and 808 gallons per <br /> day (gpd) and a total discharge of 259,718 gallons During the reporting period for February <br /> 2004, the groundwater treatment system had an average flowrate of 0 64 gpm and 916 gpd and a <br /> discharge of 21,413 gallons The LEL did not exceed 10% during the February 2004 monitoring <br /> period <br /> The final treated groundwater sample (Effluent) collected on February 23, 2004, contained no <br /> detectable concentrations of total petroleum hydrocarbons, TPHg, BTEX, MTBE, ETBE, TBA, <br /> TAME, DIPE, 1,2-DCA, or EDB The final treated groundwater sample (Effluent) collected on <br /> February 23, 2004 indicate that pH was within the required range Results of the monthly self- <br /> monitoring program are summarized 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 /> Nathan Christman <br /> Staff Geologist <br /> � ��4f <br /> Drew Van Allen t i <br /> Senior Protect Manager <br /> No <br /> Jedfine Homsey, P E <br /> awl -t <br /> CA Registered Civil Engineer No 47410 ^ , ,°'• <br /> • `�;n1 <br /> cc Mr and Mrs Raymond Farmer ^ `"- <br /> Mr Jeff Wong, SCJEHD <br /> s 1625961reportslwaterdischarge102, 04 doc 2 <br />