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Lori Duncan [EH] <br /> From: Lori Duncan [EH] <br /> Sent: Monday, December 07, 2009 1:58 PM <br /> To: 'Jim Barton' <br /> Cc: Nuel Henderson [EH];Adrienne Ellsaesser[EH] <br /> Subject: RE: Prem Dor/Masonite, 433 Scotts Ave., Stockton, San Joaquin Co. <br /> Jim, <br /> The NFAR Figure 12 is.pre-remediation. Figure 13, post-remediation, shows the current <br /> situation. A HHRA was not done, but the consultant addressed the issue of potential vapor <br /> intrusion, and the extent of the groundwater plume, in the conclusions of the NFAR. I've <br /> heard from Margaret and it is her opinion that the .data supports the conclusion that there <br /> is no plume of contamination under the apartments. <br /> Nuel told me that you discussed this site with him this morning, and that you told him you <br /> are not going to concurr with the recommendation to close it. If you issue a letter of <br /> non-concurrance we will then decide what next step to take, but it is unlikely that we <br /> would refer the site to the Regional Board for oversight. <br /> Lori Duncan, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> lduncan@sjcehd.com <br /> (209) 468-0337 ,phone <br /> (209) 468-3433 fax <br /> -----Original Message----- <br /> From: Jim Barton [mailto:jbarton@waterboards.ca.gov] <br /> Sent: Monday, December 07, 2009 6:48 AM <br /> To: Lori Duncan [EH] <br /> Subject: Prem Dor/Masonite, 433 Scotts Ave. , Stockton, San Joaquin Co. <br /> Hi Lori, <br /> I am reviewing the documents for the requested concurrence, and noticed that the NFAR says <br /> a soil gas survey was not conducted. The NFAR Figure 12 shows shallow groundwater <br /> contamination under the apartments south of the site and Figure 6 shows groundwater at <br /> 14 ' in 2006. Please advise where I can find a human health risk assessment conducted for <br /> the residents of the high density housing. Thanks. <br /> Jim Barton <br /> James L.L. Barton, P.G. <br /> Engineering Geologist <br /> California Regional Water Quality Control Board Central valley Region, 11020 Sun Center <br /> Drive, Suite 200, Rancho Cordova, CA 95670 office (916) 464-4615 <br /> fax (916) 464-4704 <br /> '1 <br />