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Page 1 of 1 <br /> Vicki McCartney [EH] <br /> From: Andrew Dorn[AndrewD@gtienv.com] <br /> Sent: Tuesday, July 24, 2012 4:22 PM <br /> To: Vicki McCartney [EH] <br /> Cc: Jenny Weese; Ray Kablanow; Liz Emmons <br /> Subject: JM Equipment site- 1245 W. Charter Way, Stockton <br /> Good Afternoon Vicki, <br /> I am contacting you in regards to the JM Equipment site located at 1245 West Charter Way in Stockton,CA. As <br /> recommended in our 15Y Semi-Annual Groundwater Monitoring Remedial Effectiveness Report(2"d Quarter <br /> 2012)dated June 29, 2012,GTI will be implementing the proposed interim remediation plan next week(August <br /> 1, 2012). <br /> July 31, 2012-Final monthly GWM event <br /> August 15Y, 2012-First Interim hydrogen peroxide injection event <br /> Interim hydrogen peroxide work includes: <br /> Remove ORC sock from injection well IW-1 and end well IW 3's use as a "control" (no remediation) <br /> Begin bi-monthly hydrogen peroxide injection in wells IW-1 and IW-3 <br /> Begin reduced monthly hydrogen peroxide injection in well IW-2 <br /> Continue air sparging in well IW-4 <br /> Reduce groundwater monitoring for remedial performance from monthly to quarterly <br /> o Last event was on July 31, 2012 and next event will be end of October 2012 <br /> Please let me know if you have any questions or concerns. <br /> Thank you, <br /> Andrew Dorn <br /> 6 Geological Technics Inc. <br /> 1172 Kansas Ave <br /> Modesto,CA 95351 <br /> (209)522-4119 <br /> andrewd@gtienv.com <br /> gti@gtienv.com <br /> 7/24/2012 <br />