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Lisa Medina [EH] <br /> From: Manning,'.Danielle <Danielle.Manning@stantec.com> <br /> Sent: Tuesday,April 09, 2013 2:20 PM <br /> To: Lisa Medina [EH] <br /> Cc: Magee,Amanda; Lichtenberger, Deborah;Tanner, Jennifer <br /> Subject: 7-11#14117, 2725 Country Club Boulevard, Stockton, CA <br /> Attachments: 14117 hydrographs.pdf <br /> Dear Ms. Medina, <br /> Stantec has been performing oxygen injection.as a remedial measure at 7-Eleven store# 14117, located at 2725 Country <br /> Club Boulevard in Stockton, CA since April 27, 2009 on a bi-weekly basis. Stantec has prepared the attached <br /> hydrographs which depict the declining methyl tertiary butyl ether(MtBE) and total petroleum hydrocarbons as gasoline <br /> (TPHg)concentrations in groundwater monitoring wells MW-2, MW-3, MW-4, and MW-8. Based on the declining <br /> concentration trends, Stantec proposes to cease oxygen injection at the site starting with the second quarter 2013, and <br /> evaluate the site for case closure under the RWQCB Low-Threat Case Closure Policy. <br /> Please provide any input or concurrence with Stantec's proposed plan. <br /> Additionally, I would like to inform you that Damon Brown has accepted another position within Stantec and has since <br /> relocated. I am now the Project Manager for the northern California 7-Eleven portfolio. Amanda Magee will be the <br /> Professional Geologist of record for our portfolio. You may contact me at(916) 384-0706 if you have any questions. <br /> Thank you, <br /> Danielle Manning <br /> Project Manager <br /> Stantec <br /> 3017 Kilgore Road Suite 100 <br /> Rancho Cordova CA 95670 <br /> Ph: (916) 384-0706 <br /> Fx: (916)861-0430 <br /> Cell: (916)281-4942 <br /> danielle.manning@stantec.com <br /> stantec.com <br /> The content of this email is the confidential property of Stantec and should not be copied, modified, retransmitted, or used for any <br /> purpose except with Stantec's written authorization. If you are not the intended recipient, please delete all copies and notify us <br /> immediately. <br /> Please consider the environment before printing this email. <br /> Email is virus free, scanned by Emsisoft Anti-Malware - www.emsisoft.com <br /> Last signature update: 3/5/2013 - 12,091,028 known threats in database <br /> 1 <br />