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M r <br /> a ci Property Page 2 <br /> p Y 9 <br /> 2969 Loomis Road r December 28, 2011 <br /> Stockton, California 95205 <br /> The EHD concurs with GTI's evaluation of TPH-d concentrations verses groundwater <br /> gradient; however, as the CUF will only reimburse for closure related expenses once the five- <br /> year review unit recommends site closure consideration, the EHD is considering closure of <br /> this site. To this end, the EHD directs that a site closure report be submitted to this <br /> department that: <br /> • Provides an estimate when groundwater will return to water quality goals; <br /> Includes Table 1 - Checklist of Required Data for No Further Action Requests at <br /> Underground Tank Sites (Appendix A — Reports, Tri-regional Board Staff <br /> Recommendations for Preliminary Investigation and Evaluation of Underground Tank <br /> Sites, dated 16 April 2004, published by the California Environmental Protection <br /> Agency Regional Water Quality Control Board Central Valley Region; and <br /> • Includes calculations showing estimates of the current dissolved and adsorbed <br /> contaminant masses of TPH-d. <br /> The EHD directs that all monitoring and sampling of wells at this site be suspended while. <br /> this site is being considered for closure.- If you have any questions, please contact Vicki <br /> McCartney at (209) 468-9852 or by e-mail at vmccartney(cDsjcehd.com. <br /> Sincerely, <br /> L I I%�e � — <br /> Victoria L. McCartney, REHS Nuel C. Henderson, Jr., PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> c: Ms Tamorah Bryant, PE, Geological Technics Inc., 1172 Kansas Avenue, Modesto, <br /> California 95351-1526 <br /> Mr. James L.L. Barton, PG, California Regional Water Quality Control Board Central <br /> Valley Region, 11020 Sun Center Drive, Suite 200, Rancho Cordova, California 95670 <br /> f <br />