SITE INFORMATION AND CORRESPONDENCE FILE 2

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Page 1 of 1 .i ..J Mike Infurna [EH] From: Ben Chevlen [ben.chevlen@atcassociates.com] Sent: Thursday, October 06, 20114:50 PM To: Mike Infuma [EH] Cc: 'Lathrop, Shelby S (Shaw Environmental, Inc.)'; 'Frank Roanhorse' Subject: Circle K 1205 (16470 Cambridge Ave., Lathrop, CA)-SVE system shut-down due to noise complaint Attachments: WO_1115933_Final Reportl.pdf Mike—I wanted to let you know that ATC staff were on-site today performing standard O&M activities when Matt Brown with the City of Lathrop stopped by; evidently there had been a noise complaint from the SVE equipment. Our staff on-site determined that the excessive noise was originating from a worn-out air dilution valve. I have since instructed our staff to shut-down the system; scheduled to occur tomorrow. As you can see in the most recent influent lab data from the site (attached), influent hydrocarbon concentrations are extremely low;ATC does not expect the SVE system being offline to have any negative effect on site conditions. Please feel free to give me a call or send me an email to discuss. Ben Chevien, PG I Senior Project Manager I ATC Associates Inc. I Los Angeles 805-496-1217 direct 1916-425-4849 mobile 25 Cupania Circle I Monterey Park, California 91755 323-517-9780 tel 1 323-517-9781 fax I www.atcassociates.com. ATC is a leader in developing innovative Environmental, Geotechnical/CMT/Special Inspections and Health &Safety solutions. View our video link to learn more. PLEASE NOTE: This message, including any attachments, may include privileged, confidential and/or inside information. Any distribution or use of this communication by anyone other than the intended recipient is strictly prohibited and may be unlawful, if you are not the intended recipient, please notify the sender by replying to this message and then delete it from your computer. 10/7/2011