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Page 1 of 2 <br /> Vicki McCartney [EH] <br /> From: Vicki McCartney [EH] <br /> Sent: Wednesday, January 25, 2012 4:21 PM <br /> To: 'Brown, Damon' <br /> Subject: RE: 7-11 #19976- 1399 N Main Street, Manteca <br /> Good afternoon Damon, <br /> Will you please forward the fourth quarter 2011 and first quarter 2012 analytical data for the 7-Eleven Store No. <br /> 19976 so that l can better determine whether it is necessary to resume the oxygen injections at this site? <br /> Thank you. <br /> Vicki McCartney, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 600 East Main Street <br /> Stockton,California 95202 <br /> Phone: (209)468-9852 <br /> Fax: (209)468-3433 <br /> Email: vmccartneynsicehd.com <br /> From: Brown, Damon [mailto:Damon.Brown@stantec.com] <br /> Sent: Wednesday, January 25, 2012 8:56 AM <br /> To: Vicki McCartney [EH] <br /> Cc: Lichtenberger, Deborah;.Manning, Danielle <br /> Subject: 7-11 #19976 - 1399 N Main Street, Manteca <br /> 7-11 #19976 <br /> 1399 North Main Street <br /> Manteca, CA <br /> Ms. McCartney, <br /> Good morning. <br /> As you know, Stantec ceased the oxygen injection events at this site in the 3rd quarter 2011 in order to <br /> observe if any rebound or recharge of dissolved petroleum hydrocarbons would occur once injections <br /> ceased. There was a moderate recharge in one well, MW-2, during the 4th quarter and again in the 1st <br /> quarter 2012 (though the 1st quarter concentrations decreased noticeably). <br /> Unless you object, Stantec will resume the oxygen injections at this site focusing specifically on targeting <br /> MW-2. Stantec believes this site may be a candidate for closure based on low-risk factors, but while we <br /> evaluate the applicability of requesting closure, we propose resuming the oxygen injections. <br /> Please let me know if you have any questions or comments. <br /> Thank You, <br /> Damon Brown <br /> Senior Geologic Consultant <br /> Stantec Consulting Services Inc. <br /> 3017 Kilgore Road Suite 100 <br /> Rancho Cordova CA 95670 <br /> Ph: (916)861-0400 Ext.230 <br /> Fx: (916)861-0430 <br /> 1/25/2012 <br />