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} • • <br /> www.advgeoenv.com <br /> This email/fax message is for the sole use of the intended recipient(s) and may contain <br /> confidential and privileged information. Any unauthorized review, use, disclosure or <br /> distribution of this email/fax is prohibited. If you are not the intended recipient, <br /> please contact the sender by email/fax and destroy all paper and electronic copies of the <br /> original message. <br /> -----Original Message----- <br /> From: Jim Barton [mailto:jbarton@waterboards.ca.gov] <br /> Sent: Tuesday, May 13, 2008 9:58 AM <br /> To: Tim Cuellar <br /> Cc: Bob Marty; Mike Infurna; Nuel Henderson <br /> Subject: Re: FCC well abandonments <br /> Hi Tim, <br /> Mike Infurna and I discussed your proposal in depth prior to receiving this email. Mike <br /> said Nuel has some concerns with it, however, under the circumstances they are willing to <br /> allow it for this well. I would prefer pushing the geoprobe rod down to total depth (it <br /> should also follow the path of least resistance) and use it as a guide for the augers. I <br /> know that will probably turn the polyethylene to mush, but so will the open augers. What <br /> does the geoprobe company think at this point? Thanks. <br /> Jim <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 /> >>> "Tim Cuellar" <tcuellar@advgeoenv.com> 5/13/2008 9:46 AM >>> <br /> Jim, <br /> Due to the complications we encountered at FCC well MW-13, and because of space <br /> limitations to excavate, I have discussed with San Joaquin County EHD the possibility of <br /> abandoning just this well by hollow stem auger using open-hole techniques. Because there <br /> is virtually no grout seal, and because the well was virtually a ND well, they appear to <br /> be somewhat open to the idea. Mike Infurna asked me to prepare an addendum. <br /> There is virtually no grout seal at this well, so augers should be able to be advanced to <br /> a depth of 155 feet with virtually no effort. There is an abundance of silts and clays to <br /> depths of 125 feet, so the augers should theoretically follow the path of least resistance <br /> down the borehole.If EHD approves the method, would you have any issues with abandoning <br /> well MW-13 by <br /> hollow stem auger overdrill? Thanks - Tim <br /> 2 <br />