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v <br /> ASSOCIATESATC <br /> I N C <br /> SELF-MONITORING RESULTS <br /> From the date of its startup, December 20, 2002, through May 26, 2004, the groundwater <br /> treatment system had an average flowrate of 0 52 gallons per minute (gpm) and 755 gallons per <br /> day (gpd) and a total discharge of 283,091 gallons During the reporting period for May 2004, <br /> the groundwater treatment system had an average flowrate of 0 25 gpm and 359 gpd and a <br /> discharge of 2,639 gallons The LEL did not exceed 10% during the May 2004 monitoring <br /> period <br /> The final treated groundwater sample (Effluent) collected on May 26, 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 /> May 26, 2004 indicated that pH was with <br /> un 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 Chnstman <br /> Staff Geologist <br /> Drew Van Allen ' <br /> 1 �r <br /> Senior Project Manager �q <br /> 0 � � <br /> J e Homsey, P E <br /> w <br /> CA Registered Civil Engineer No 47410 .s <br /> cc Mr and Mrs Raymond Farmer FK <br /> Mr Jeff Wong, SJCEHD <br /> • <br /> s 162596\repoMkwaterdischarge105_04 doe 2 <br />