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• May 1993, Results of March 1993 Quarterly Monitoring event are presented Report <br /> submitted by WESTON also includes documentation of excavation activities at former tank <br /> pit <br /> • Spring 1993, Seventh Quarterly Monitoring Event (June 1993) <br /> I • Summer 1993 Eighth Quarterly Monitoring Event (August 1993 <br /> ) <br /> • Fall 1993, Ninth Quarterly Monitoring Event (December 1993) <br />' • Winter 1994, Tenth Quarterly Monitoring Event (March 1994) <br /> • April 1994, SECOR retained to implement focused additional environmental investigation <br />' activities at the Major Mart Site in response to February 1994 concerns of the PHS/EHD and <br /> CRC The investigation included a site specific subsurface utility review, procurement of <br /> appropriate drilling permits from PHS/EHD and the installation of four soil borings (SB-1, <br /> -2, -3 and-4)by the subcontractor, West Hazmat Drilling Corp (No 554979 C57 License) <br />' • May/June 1994, SE.COR installs four soil borings as outlined above <br /> i • Spring 1994, Eleventh Quarterly Monitoring Event (June 1994) <br />■ • <br /> August 1994, P g SECOR submits Report of Findings from Additional Environmental <br /> g <br /> Investigation - Major Mart Facility <br /> • October 4 1994 SECORresents an outline of the September 3Q 1994 Summa of <br /> P P �' <br /> Investigation Findings and Closure Report to the San Joaquin County Technical Review <br /> Committee <br />' • Fall 1994, Twelfth and Final Quarterly Monitoring Event (October 1994) <br /> 1.2 SUMMARY OF CLOSURE REPORT <br /> A number of conclusions have been developed based on the findings described in SECOR's <br /> September 1994 Closure Report Soil analytical data collected from investigations to date indicate <br /> that petroleum hydrocarbon impacts to the groundwater zone of saturation are limited to a non- <br />' BTEX constituent The characterization of soil and groundwater conditions at the Site appears to <br /> be completed Specifically, our review of the results of the final groundwater sampling event <br /> conducted on October 24, 1994 confirm that no detectable petroleum hydrocarbon compounds are <br /> present in Site groundwater <br /> SECOR International Inc (SECOR®) CRC Environmental Risk Management,Inc <br /> N0026 ooi 01 add 3 November 30 1994 <br />