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71 0 <br /> • <br /> Margaret Lagorio [EH] <br /> From: Margaret Lagorio [EH] <br /> Sent: Thursday, December 07, 2006 9:08 AM <br /> To: 'Jim Barton' <br /> Subject: RE: 6437 Banner, Lodi <br /> That well was not just a fire suppression well, it was the well that initially served <br /> Chevron and was destroyed on April 20, 1995. I don't know when it was originally drilled <br /> or have any well construction details. The destruction permit shows 144 feet so that was <br /> the depth and 12 3/4 inch so that was the casing diameter. It also states the casing was <br /> perforated from 50 to 85 feet and was filled from the bottom up with 6 sack sand cement <br /> slurry. <br /> -----Original Message----- <br /> From: Jim Barton [mailto:jbarton@waterboards.ca.gov] <br /> Sent: Thursday, December 07, 2006 6:19 AM <br /> To: Margaret Lagorio [EH] <br /> Cc: Robert Busby <br /> Subject: Re: 6437 Banner, Lodi <br /> Thanks for your response and the information/figure on the fire suppression well <br /> immediately north of Flag City Chevron, Margaret. Are there any well construction details <br /> available? I will incorporate this information into the final CAO. <br /> Jim <br /> James L.L. Barton, P.G. <br /> Engineering Geologist <br /> California Regional Water Quality Control Board <br /> Central Valley Region, <br /> 11020 Sun Center Drive, Suite 200, <br /> Rancho Cordova, CA 95670 <br /> office (916) 464-4615 <br /> fax (916) 464-4704 <br /> >>> "Margaret Lagorio [EH] " <MLagorio@sjcehd-.com> 12/6/2006 11:51 AM >>> <br /> Jim, <br /> Sorry it took longer to get this information to you than I thought but here are some <br /> points and information on the Shell and Chevron sites. <br /> 1. A drinking water well was installed at 14749 Thornton Road for 3 B's truck facility in <br /> July 1981 when Richard Bokides owned the property. This well still exists but its use is <br /> minimal. <br /> 2 . A drinking water well for 14659 Thornton Road, Rocky's Restaurant, was installed in <br /> March 1984. The first time this well water was tested for MTBE was 2/25/99 and it had 7 <br /> ppb MTBE. This well was destroyed in March 2002 after the County Service area 31 (CSA31) <br /> allowed the restaurant to connect to their water system. It is very effident that this <br /> well affected the flow of groundwater at the Chevron site. <br /> 3 . The first UST's were installed at the Chevron site in 1983. The water for the site <br /> was from a well north of the Chevron site (see drawing attached) . In May 1991 three <br /> monitoring wells were installed at the Chevron site for an environmental assessment. The <br /> May 9, 1991 contour map showed water flowing north-northeast towards the drinking water <br /> well. A May 18, 1993 potentiometric map shows water flowing northwest (between the <br /> Chevron well and Rocky's well) and a water sample from MW1 had benzene so the site was <br /> placed in the LOP on May 21, 1993 . <br /> 4 . CSA 31 wells were drilled southeast of Chevron in September 1994 . The Chevron site <br /> was connected to the CSA31 water system and the well north of Chevron was destroyed on <br /> 4/20/95. The July 19, 1996 Groundwater elevation map (attached) shows water flow <br /> 1 <br />