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Mr Kyle Christie <br /> May 15, 1995 <br /> Page 4 <br /> operation will begin during the second quarter 1995 In the interim, the SUETS and the <br /> biofilter will operate in tandem <br /> Brown and Caldwell will continue to operate the SUETS in a manner designed to remediate <br /> soil and soil vapors effectively and quickly by concentrating extraction from areas with <br /> highest concentrations in vapor (as monitored by field instruments and periodic laboratory <br /> analyses of air samples) Additionally Brown and Caldwell will maximize influent <br /> concentrations to the SVETS Influent air samples are collected monthly to evaluate this <br /> criteria <br /> SUMMARY OF WORK <br /> Work Completed in First Quarter 1995 <br /> • Continued monitoring SVETS and optimized system performance <br /> • Submitted fourth quarter 1994 groundwater monitoring and remediation system <br /> evaluation report <br /> • Sampled site groundwater monitoring wells for first quarter 1995 Sampling <br /> performed by EMCON <br /> • Prepared SJVUAPCD reports detailing operation and destruction removal efficiency <br /> of the SVETS. <br /> • Submitted well replacement report for monitoring well W-2 <br /> • Located well W-6 through a geophysical survey performed by Krazan and <br /> Associates. <br /> Work Anticipated During Second Quarter 1995 <br /> • Reconfigure SVETS to remediate entirely through the biofilter <br /> • Remove the catalytic oxidizer for use at another site <br /> • Continue monitoring of SVETS and optimization of Biofilter system performance. <br /> • Submit first quarter 1995 groundwater monitoring and remediation system evaluation <br /> report <br /> • Use or disclosure of data contained on this sheet is subject to the restriction specified at the beginning of this <br /> document <br /> 20654EP0PTs\1ST95gMJZ r <br />