Laserfiche WebLink
2 <br /> Former J.M. Equipment Company October 9, 2 Page e 2 <br /> 1245 West Charter Way <br /> Stockton, California 95351 <br /> During the fourth quarter of the feasibility study, GTI implemented Interim Remedial Plan that <br /> included modifying the feasibility study as follows: <br /> Removal of the ORC Advance socks from IW-1 and termination of the study; <br /> • Termination of the natural attenuation study of groundwater collected from control well <br /> IW-3; <br /> • Bimonthly injections of hydrogen peroxide into the former control injection well IW-3 <br /> and the former ORC Advanced well IW-1; <br /> • Monthly injection of hydrogen peroxide into IW-2 instead of bimonthly; <br /> • Continuation of air sparging operations in IW-4 (even through analytical data do not <br /> support a continuation of this remedial method); and <br /> • Quarterly groundwater monitoring for remedial performance, instead of monthly. <br /> GTI has indicated that these changes to the pilot study would continue until there is <br /> approval/(denial) of the CAP by the EHD; additional monies are allocated from the <br /> underground Storage Tank Cleanup Fund to implement proposals presented in the CAP, and <br /> final implementation of the CAP. Although the EHD was not consulted prior to implementing <br /> these changes, the EHD approves the implementation of the Interim Remedial Plan based on <br /> the findings provided in the report. <br /> Please note that the currently approved groundwater monitoring program does not preclude <br /> obtaining depth-to-water measurements in wells not scheduled for sampling if the data are <br /> needed for groundwater gradient determination. <br /> If you have any questions, please contact Vicki McCartney at (209) 468-9852 or by e-mail at <br /> vmccartney(@sicehd.com. <br /> Sincerely, <br /> -- <br /> �� Nuel C. Henderson, Jr., PG <br /> Victoria L. McCartney, RI HS Engineering Geologist <br /> Senior Registered Environmental He Specialist 9 g <br /> c: Mr. Raynold I. Kablanow II, Ph.D., PE, Geological Technics Inc., 1172 Kansas <br /> Avenue, Modesto, 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 />