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Page 1 of 2 <br /> `40 <br /> Vicki McCartney [EH] <br /> From: Silva, Larry [Isilva@craworld.com] <br /> Sent: Tuesday, May 13, 2014 12:52 AM <br /> To: Vicki McCartney [EH] <br /> Subject: RE: 2494 Fremont <br /> Attachments: Summary Table.pdf; S-1 -MTBE, 1,2-DCA.pdf; S-1 -TPHg, Benzene.pdf; S-1-85 1,2-DCA.pdf; S- <br /> 3-84- 1,2-DCA.pdf; S4- 1,2-DCA.pdf; S-4-83 1,2-DCA.pdf; S-6-MTBE, 1,2-DCA.pdf <br /> Ms McCartney, <br /> Please find attached calculations for groundwater to reach water quality objectives(WQOs)for the subject site. <br /> CRA prepared time to reach WQO calculations for wells S-1, S-1-85, 5-3-84, S-4, S-4-83,and S-6. If a <br /> constituent of concern (COC)in a well was below its respective WQO for at least the last four consecutive <br /> sampling events then CRA did not prepare time to reach WQO calculations for it. The exception was for 1,2- <br /> DCA in wells S-2 and S-5,and benzene in S-6,where the COCs during the last four sampling events were overall <br /> 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:vmccartnevCcbsicehd.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 Fremont Shell <br /> Station at 2494 East Fremont Street in Stockton since it appears that no chemicals of concern were detected from <br /> 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 water quality <br /> objectives. Once I receive this information, I will begin preparing the Case Closure Summary to send to the <br /> 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 /> 5/13/2014 <br />