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1 v <br /> ATC <br /> A S SO C I ATE S I N C . <br /> detectable concentrations of TBA. Groundwater samples from MW1, MW2, MW4, MW6b, <br /> MW6c, MW7a, MW7b, MW7c, MW10b, and EW1 contained detectable concentrations of 1, 2- <br /> DCA. <br /> Analytical results of groundwater samples are summarized in Table 2. Laboratory data sheets and <br /> chain-of-custody documentation are contained in Attachment 2. Isoconcentration maps depicting <br /> the TPHg and benzene are presented in Figures 6 and 7. MTBE concentrations in the A, B, and C <br /> water bearing zones are presented in Figures 8, 9 and 10 respectively. <br /> 1 <br /> 3.0 GEOTRACKER DATA UPLOAD <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 7423065006) and the laboratory data was also submitted electronically to <br /> the SWRCB Geotracker database (confirmation numbers 6511470139, 3013225317, and <br /> 9467188298 for January 28, 2005, February 22, 2005 and March 16-17, 2005 respectively). <br /> Documentation of the data submittal is contained in Attachment 3. <br /> 4.0 REMEDIATION SYSTEM O&M ACTIVITIES <br /> rThis section of the report presents the results of operation and monitoring during the period of <br /> January through March 2005 for the ozone air sparging (C-SpargeTM) remediation system at the <br /> 1 Jamar property. The results of the remediation activities are also compared with conditions prior <br /> 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 /> microencapsulated ozone (03). This remediation technology combines the operations of air <br /> stripping and oxidative decomposition in a single process. The C-SpargeTM process employs <br /> 1 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 /> ■ GHH Engineering Inc.'s Interim Groundwater Treatment System, Jamar Service, 4075 <br /> East Main, Stockton, California, dated October 2003. <br /> ■ ATC's Remediation System Installation Report for Jamar_Property, 4075 East- Main -- ---- - <br /> Street, Stockton, California dated 27 May 2003. <br /> ' S:1268231QM reports12005 IstQR.doc 4 <br />