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is • Page 1 of 2 <br />Garrett Backus [EH] <br />From: Lon Kitagawa [LKitagawa@aascworld.com] <br />Sent: Thursday, March 26, 2009 7:29 AM <br />To: Garrett Backus [EH] <br />Subject: RE: acid spill on Feb 16, 09 <br />Garrett: <br />We did some additional investigation before accepting any proposals. We inserted a camera in the lines but <br />weren't able to detect any cracks. We did however notice that there was liquid on one side and nothing on the <br />other. We also closed off the piping and applied air. The one side without the liquid didn't build up any pressure <br />at all. So we're confident that the break in the pipe is at the elbow joint located outside the building. Our plant <br />engineer also indicated that there were footings for the building wall that go down about 2 feet into the ground. If <br />the leak was inside the building in the piping from the tank to the chiller, it would have had to go down 2 feet <br />below the footings and then back up into that asphalt channel where we noticed the liquid. It's highly unlikely for <br />this scenario so we're pretty confident most of the soil borings will be focused outside of the building. <br />So right now a work plan for determining extent of contamination is being drafted and will be submitted to your <br />agency for permits to drill. Anticipated start date once permits are issued is April 22nd. Once we determine the <br />extent of contamination, the analytical results will be reviewed to determine what cleanup is required, if any. <br />Do you want a copy of the work plan once I receive it? <br />Lon <br />From: Garrett Backus [EH] [mailto:gbackus@sjcehd.com] <br />Sent: Wednesday, March 25, 2009 4:17 PM <br />To: Lon Kitagawa <br />Subject: RE: acid spill on Feb 16, 09 <br />Lon, <br />Is there a cleanup plan for the acid spill? <br />Thank you, <br />Garrett Backus, REHS <br />San Joaquin County Environmental Health Department <br />600 E. Main Street <br />Stockton, CA 95202 <br />telephone: (209) 468-2986 <br />fax: (209) 468-3433 <br />email: gbackus@sjcehd.com <br />From: Lon Kitagawa[mailto:LKitagawa@aascworld.com] <br />Sent: Monday, February 23, 2009 2:23 PM <br />To: Garrett Backus [EH] <br />Subject: RE: acid spill on Feb 16, 09 <br />3/26/2009 <br />