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C- VVATC <br /> A s S O C 1 A T E S I N C <br /> SELF-MONITORING RESULTS <br /> From the date of its startup, December 20, 2002, through February 28, 2003, the groundwater <br /> treatment system had an average flowrate of 0 90 gallons per minute (gpm) and 1,292 gallons per <br /> day (gpd) During February 2003, the groundwater treatment system had an average flowrate of <br /> 0 98 gpm and 1,411 gpd The LEL did not exceed 10% during the February 2003 monitoring <br /> period <br /> Final treated groundwater samples (Effluent) collected on February 28, 2003, contained no <br /> detectable concentrations of total petroleum hydrocarbons, TPHg, BTEX, MTBE, ETBE, TBA, <br /> TAME, DIPE, 1,2-DCA, or EDB Final treated groundwater samples (Effluent) collected on <br /> January 28, 2003 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 /> 110Y i h- <br /> Drew Van Allen <br /> Senior Project Manager <br /> IJ �- <br /> Je e Homsey, P E <br /> CA Registered Civil Engineer No 47410 <br /> cc Mr and Mrs Raymond Farmer " <br /> wlwordprol625961reportslwaterdischarge102_03 doc 2 <br />