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Page 2 of 3 <br /> —.s- <br /> YI! <br /> From: Silva, Larry rmailto:lsilvaCabcraworld.com] <br /> Sent: Tuesday, May 13, 2014 12:52 AM <br /> To: Vicki McCartney [EH] <br /> Subject: RE: 2494 Fremont <br /> Ms McCartney, <br /> Please find attached calculations for groundwater to reach water quality objectives(WQOs)for the <br /> subject site. <br /> CRA prepared time to reach WQO calculations for wells S-1, S-1-85, 5-3-84, S-4, 5-4-83,and S-6. <br /> If a constituent of concern(COC) in a well was below its respective WQO for at least the last four <br /> consecutive sampling events then CRA did not prepare time to reach WQO calculations for it. The <br /> exception was for 1,2-DCA in wells S-2 and S-5,and benzene in S-6,where the COCs during the <br /> last four sampling events were overall lower than WQOs. <br /> Please let me know if I can start to prepare the public notification letter. <br /> Regards, <br /> Larry J. Silva <br /> Conestoga-Rovers & Associates (CRA) <br /> 10969 Trade Center Drive, Suite 107 <br /> Rancho Cordova, CA 95670 <br /> Phone: 916.889.8914 <br /> Fax: 916.889.8999 <br /> Email: Isilva@craworld.com <br /> www.CRAworld.com <br /> From: Vicki McCartney [EH] rmailto:vmccartnev@sicehd.com] <br /> Sent: Monday, May 12, 2014 9:36 AM <br /> To: Silva, Larry <br /> Subject: 2494 Fremont <br /> Good morning Larry, <br /> I received notification from the Regional Board that no additional sampling will be required at <br /> Fremont Shell Station at 2494 East Fremont Street in Stockton since it appears that no chemicals of <br /> concern were detected from soil samples collected during both waste oil tank removals. <br /> The only thing that I need now is for CRA to provide the time required for groundwater to return to <br /> water quality objectives. Once I receive this information, I will begin preparing the Case Closure <br /> Summary to send to the Regional Board. <br /> Larry, when do you estimate that I will receive this information? <br /> Vicki McCartney, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 5/21/2014 <br />