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v <br /> ///APEX Cn <br /> E N Y I R 0 T E C H INC . 7844 Madison Avenue,Suite 106 • Fair Oaks,CA 95628 <br /> r 1 800 242 5249 - Ph 916 535 0200 Fax 916 535 0207 <br /> July 7, 1998 <br /> Ms Patricia Anderson <br /> Central Valley Regional Water Quality Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, CA 95827 <br /> Subject Response to Delay No Further Action Required Decision <br /> And Closure Request <br /> Moore Petroleum, Inc (Frank's Exxon) <br /> 14800 West Frontage Road, Manteca, California <br /> Apex Project No ERA02 009 <br /> Dear Ms Anderson <br /> This is in response to your letter to Ms Margaret Lagono of San Joaquin County Environmental <br /> Health Division(SJCEHD) dated May 26, 1998 (Appendix A) The letter requested that the <br /> following items be addressed before a"No Further Action Required" letter is issued <br /> 1 Determine the amount of remaining contamination on site <br /> 2 Conduct a fate and transport study and estimate the concentration of contaminants that may <br /> impact the on-site domestic well <br /> 3 Obtain information concerning the location, and construction details of the proposed trailer <br /> park domestic well, and estimate the concentration of contaminants that may impact this <br /> well <br /> 4 Explain why conditions remaining at this site will not adversely impact water quality, health, <br /> or other beneficial uses <br /> Apex Envirotech, Inc (Apex) believes, and is concurred by the Regional Board that significant <br /> remedial activities had occurred at the subject site from January 1995 to November 1996 In <br /> November 1996, the SJCEHD concurred with Apex to shut down the soil vapor and groundwater <br /> extraction system on site due to low system influent concentrations <br /> The constituents of concern at the site are mainly total petroleum hydrocarbons, as gasoline <br /> 1 (TPHg), 1,2-dichloroethane (1,2-DCA) and methyl tert-butyl ether (MTBE) in the shallow <br />