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CvvATC <br /> A S S O C I A T E S I N C . <br /> �m were detected in MWI, MW2 and MW3. Benzene, ethylbenzene and xylenes were detected in <br /> EWl. Only toluene was detected in MW6a and MW7a. <br /> us TPHg and BTEX were not detected in MW4, MW6B, MW6c, MW7b, MW8, MW9a, MW9b, <br /> MW9c, MW10a, MW10b and MW10c. None of the groundwater samples contained detectable <br /> concentrations of TPHd. <br /> 6o <br /> MTBE was detected in groundwater samples collected from MWl, MW2, MW4, MW5, MW6a, <br /> MW6b, MW6c, MW7a, MW7b, MW7c, MW8, MWIOb and EWl. The groundwater sample <br /> collected from MW2 also contained a detectable concentration of TBA. Groundwater samples <br /> collected from MWI, MW2, MW4, MW6b, MW7a, MW7b, MW7c, MW10b, and EWl <br /> contained detectable concentrations of 1,2-DCA. <br /> Analytical results of groundwater samples are summarized in Table 2. Laboratory data sheets and <br /> i chain-of-custody documentation are contained in Attachment 2. Isoconcentration maps depicting <br /> the TPHg and benzene in the shallow groundwater zone are presented in Figures 6 and 7, <br /> respectively. MTBE concentrations in the A, B, and C water bearing zones are presented in <br /> ` Figures 8, 9 and 10, respectively. <br /> 3.0 GEOTRACKER DATA UPLOAD <br /> b. <br /> The site facility global ID number is T0607700858. The depth to water data was submitted <br /> electronically to the State Water Resources Control Board (SWRCB) Geotracker database <br /> (confirmation number 7978581070) and the laboratory data was also submitted electronically to <br /> the SWRCB Geotracker database (confirmation number 4844917118). Documentation of the <br /> data submittal is contained in Attachment 3. <br /> 4.0 REMEDIATION SYSTEM O&M ACTIVITIES <br /> This section of the report presents the results of operation and monitoring during the period of <br /> October, November, and December of 2004 for the ozone air sparging (C-SpargeTM)remediation <br /> system at the Jamar property. The results of remediation activities also compared with conditions <br /> prior to start-up activities. Cumulative data is discussed. <br /> The C-SpargeTM process at the Jamar Property site is an in situ air stripping process using <br /> microenca sulated ozone 03). This remediation technology p ( combines the operations of air <br /> stripping and oxidative decomposition in a single process. The C-SpargeTM process employs <br /> L. <br /> nano- to micro-sized bubbles of air-encapsulated 03, created by forcing an air/ 03 mixture <br /> through Spargepoints®into soil or groundwater. <br /> The primary documents for the design, installation, operation and monitoring of the Jamar <br /> property are: <br /> S:\26823\QM repons\2004 4QR.doc 4 <br />