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Page 1 of 2 <br /> ar ../ <br /> Vicki McCartney [EH] <br /> From: Vicki McCartney [EH] <br /> Sent: Tuesday, May 13, 2014 10:17 AM <br /> To: 'ccondon@waterboards.ca.gov' <br /> Cc: 'Barton, Jim@Waterboards' <br /> Subject: FW: 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 /> Good morning Cori, <br /> I am forwarding an email from Larry Silva of Conestoga-Rovers and Associates. The email contains calculations <br /> for when groundwater will reach water quality objectives at Shell-branded Service Station at 2494 Fremont Street <br /> in Stockton. Jim Barton requested this information prior to my submittal of the Case Closure Summary to the <br /> Regional Board. <br /> Vicki McCartney, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 1868 East Hazelton Avenue <br /> Stockton, California 95205 <br /> Phone: (209)468-9852 <br /> Email: vmccartney(a-_)sicehd.com <br /> 0 <br /> i <br /> From: Silva, Larry [mailto:lsilva@craworld.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 subject site. <br /> CRA prepared time to reach WQO calculations for wells S-1, 5-1-85, S-3-84, S-4, 5-4-83,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 /> 5/13/2014 <br />