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ATC Associates Inc <br /> \\// 1 117 Lone Palm Avenue, Suite B <br /> Modesto, California 95351 <br /> 209-579-2221 <br /> ASSOCIATE s INC Fax 209-579-2225 <br /> ANALYTICAL RESULTS <br /> MW1, MW2, MW4, MW5, MW6, and MW9 contained detectable concentrations of TPHg <br /> and/or BTEX constituents The groundwater samples collected from MW3 and MWS and the <br /> on-site domestic well contained no detectable concentrations of TPHg or BTEX TPHg and <br /> BTEX constituents detected in MW1 decreased significantly since the previous groundwater <br /> monitoring event conducted on November 19, 2004 <br /> MW5 and MW6 contained detectable concentrations of MTBE at 3 4 micrograms per liter (ug/L) <br /> and 89 ug/L, respectively MW1, MW2, MW5, MW6, and MW9 contained detectable <br /> concentrations of 1, 2-DCA respectively as follows 61 ug/L, 46 ug/L, 12 ug/L, 240 ug/L, and 2 3 <br /> ug/L The groundwater samples collected from MW1, MW2, MW3, MW4, MW8 and MW9 <br /> contained no detectable concentrations of MTBE, TBA, DIPE, ETBE, TAME, or EDB although <br /> the reporting limits for MW1 and MW2 were elevated due to dilution <br /> The soil cuttings did not contain any detectable concentrations of TPHg, BTEX or MTBE <br /> Analytical results of groundwater samples are summarized in Table 2 Analytical results of the <br /> . drum cuttings are summarized in Table 3 Laboratory data sheets for groundwater and soil <br /> cuttings are contained in Attachment 2 <br /> ADDITIONAL ACTIVITIES <br /> On January 24, 2005 ATC supervised the abandonment of MW10 On January 25, 2005 ATC <br /> supervised the installation of an extraction well VE4, which will be incorporated into the <br /> upcoming remediation system <br /> ATC has submitted appropriate permits (i e , Air Pollution Control District) to begin <br /> development and operations of the remediation system at the site The project is in transition <br /> until permits are received <br /> GEOTRACKER DATA UPLOAD <br /> The facility has been assigned a Geotracker global identification number T0607700051 The <br /> depth to water data was submitted electronically to the State Water Resources Control Board <br /> (SWRCB) Geotracker database (confirmation number 9355010807) and the laboratory data was <br /> also submitted electronically to the SWRCB Geotracker database (confirmation number <br /> 6449656486) Documentation of the data submittal is contained in Attachment 3 <br /> RECOMMENDATIONS <br /> Based on the results of the first quarter 2005 monitoring event, we recommend the following <br /> S\env iromenta1125291\reports\]QR-2005 doc 3 <br />