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Mike Infurna [EH] <br /> From: Lathrop, Shelby S (Shaw Environmental, Inc.) <br /> [S h el by.S.Lathrop @contractor.con ocoph i I I i ps.com] <br /> Sent: Wednesday, March 02, 2011 11:46 AM <br /> To: Harms, Clint; Jim Barton; Mike Infurna [EH] <br /> Cc: Peltier, Richard <br /> Subject: RE: Circle K 1205, 16470 Cambridge , Lathrop, CA <br /> I also note that the TPI-Ig concentrations in the treatment zone well with historically highest levels <br /> have declined by over 50% over the past year, and latest MTBE levels are <3 ug/L. <br /> Shelby S. Lathrop <br /> Shaw Environmental, Inc. <br /> Approved service provider of ConocoPhillips - Risk Management & Remediation d� <br /> Client Contact Information: <br /> 76 Broadway <br /> Sacramento, 95818 ! ? x U <br /> (916) 558-76099 3 <br /> fax (916) 558-7639 <br /> -----Original Message----- <br /> From: Harms, Clint [mailto:Clint.Harms@stantec.com] <br /> Sent: Wednesday, March 02, 2011 11:32 AM <br /> To: Jim Barton; Mike Infurna [EH] <br /> Cc: Lathrop, Shelby S (Shaw Environmental, Inc.); Peltier, Richard <br /> Subject: RE: Circle K 1205, 16470 Cambridge , Lathrop, CA <br /> Jim - We didn't generate Hex Chromium or Bromate, but we got elevated dissolved manganese in <br /> several wells that was not in the baseline sampling. We are working with or Geochemist to <br /> determine what may be happening as dissolved manganese is generally a result of reducing <br /> conditions which is the opposite of what we are trying to do with ozone injection. We don't plan to <br /> leave the ozone system off for an extended period, just to collect one more set of samples for <br /> evaluation in the pilot test. <br /> Clinton Harms <br /> Senior Scientist <br /> Stantec <br /> 3017 Kilgore Road Suite 100 <br /> Rancho Cordova CA 95670 <br /> Ph: (916) 861-0400 Ext. 228 <br /> Fx: (916) 861-0430 <br /> Cell: (916) 826-4186 <br /> www.stantec.com <br /> The content of this email is the confidential property of Stantec and should not be copied, modified, <br /> retransmitted, or used for any purpose except with Stantec's written authorization. If you are not the <br /> intended recipient, please delete all copies and notify us immediately. <br /> I <br />