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• . Page 1 of 4 <br /> Mike Infurna [EH] ��,, <br /> From: Mike Infurna [EH] <br /> Sent: Thursday, June 11, 2009 9:07 AM <br /> To: 'Westhoff, Brian' <br /> Subject: RE: Arco 4932, 16 E. Harding Way, Stockton, CA - Monitoring and Sampling Plan Confirmation <br /> The EHD has evaluated your request to increase the sampling/analyzing for DMW- <br /> 10 from biennial to semi-annually. Your request is tentatively approved for Third <br /> Quarter -2009 with the condition ARCO provides technical justification for this need <br /> before your 3rd-2009 sampling event occurs and with enough time for the EHD <br /> to evaluate the request (one week minimum) . After the EHD has reviewed your <br /> technical justification, you will be notified if continued semi-annual sampling and <br /> laboratory analyses is approved or not for DMW-10. <br /> Detectable amounts of Xylene and 1 ,2 DCA were detected in DMW-10 on January <br /> 21 , 2009. These constituents are to be added to the MtBE analysis you propose to <br /> analyze for in the 3rd-2009 event. <br /> From: Westhoff, Brian [mailto:Brian.Westhoff@stantec.com] <br /> Sent: Wednesday, June 10, 2009 4:16 PM <br /> To: Mike Infurna [EH] <br /> Subject: RE: Arco 4932, 16 E. Harding Way, Stockton, CA - Monitoring and Sampling Plan Confirmation <br /> We are working on a commingled plume option for these two sites since some of the MTBE on the CP site <br /> may have come from Arco. <br /> The pelf of the 1 Q09 report shows those figures 14, 15, 16 as First Quarter 2009. This is not what yours <br /> says? <br /> Brian Westhoff <br /> Geologic Consultant <br /> Stantec <br /> 3017 Kilgore Road Suite 100 <br /> Rancho Cordova CA 95670 <br /> Ph: (916)861-0400 Ext.270 <br /> Fx: (916)861-0430 <br /> Cell: (916)412-2459 <br /> brian.westhoff@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 <br /> used for any purpose except with Stantec's written authorization. If you are not the intended recipient, please delete all <br /> copies and notify us immediately. <br /> (-t Please consider the environment before printing this email. <br /> From: Mike Infurna [EH] [mailto:MInfurna@sjcehd.com] <br /> Sent: Wednesday, June 10, 2009 4:05 PM <br /> To: Westhoff, Brian <br /> Subject: RE: Arco 4932, 16 E. Harding Way, Stockton, CA - Monitoring and Sampling Plan Confirmation <br /> 6/11/2009 <br />