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Y S E c o R -- - - - ------ <br /> Second Quarter 2003 Remedial Systems Status Report <br /> July 29, 2003 <br /> Page 2 <br /> Remediation system field data sheets are presented in Attachment 1 Air sparge operational data, <br /> including flow rate and applied pressure data, are presented in Table 1 Dissolved oxygen <br /> concentrations for wells MW-1 through MW-9 are presented in Table 2 <br /> CONCLUSIONS <br /> The SVE system has been deactivated due to elevated groundwater levels The AS system <br /> continues to operate, injecting air into the subsurface providing oxygen for in-situ bioremediation of <br /> any remaining petroleum hydrocarbons <br /> If you have any questions or require additional information, please contact Mr Greg McIver at (916) <br /> 861-0400 extension 279 <br /> Sincerely, <br /> SECOR International Incorporated <br /> �� <br /> KKaram Parm r elver <br /> Staff Engineer Project Manager <br /> Enclosures <br /> Figure 1 Site Location Map <br /> Figure 2 Site Plan <br /> Table 1 Air Sparge System Operational Data <br /> Table 2 Dissolved Oxygen Well Concentrations <br /> Attachment 1 Remedial System Field Data Sheets <br /> cc Lori Duncan, San Joaquin County Environmental Health Division, Stockton, California <br /> Marcus Pierce, RWQCB-CVR, 3443 Routier Road, Suite A, Sacramento, California <br /> 1 IChevron1942751Periodic Monitoring12003 OW2003 O&M Report 9-4275 doc <br />