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r <br /> Geologica[Tec&eZrs -inc. +„ <br /> 3741 River Road <br /> M-iesu,Cufxfancia 95351 <br /> (209)538-6424/F¢r#538-5852 <br /> December 4, 1997 <br /> GTI Project No.: 2513 <br /> GTI Project Name: McGranahan(Gawne Rd.) <br /> ' A EALTH <br /> Ms. Diane Bufalacchi PERIOT SERVICES <br /> San Joaquin Valley Unified Air Pollution Control District <br /> 4230 Kiernan Road, Suite 130 <br /> Modesto, California 95356 <br /> RE: Authority To Construct(N-3946-1-0)Inspection Lab Test Results(11/12/97) <br /> Former Moresco Property, 16865 Gawne Rd., Stockton, CA 95352 <br /> Dear Ms. Bufalacchi: <br /> Herewith attached are copies of the laboratory data (Air Toxics LTD.) 'for the influent and <br /> effluent air samples collected during the initial inspection on: November 12, 1997 from the <br /> thermal oxidizer (TO) being used to control emissions from the soil vapor extraction system <br /> operating at the former Moresco Property site. The attached calculations show that the TO was <br /> effective in controlling emissions to permit conditions. At the time these samples were collected <br /> the extraction system was pulling from the air recharge wells. <br /> On November 16, 1997 the vapor extraction system was switched over to:the vapor extraction <br /> well. On November 19, 1997 samples were collected from; both the influent and effluent <br /> streams. Upon receipt of the results from the laboratory I will perform,the calculations and <br /> submit them to you. <br /> If you should have any questions regarding this project please contact myself or Ray Kablanow <br /> at the office. <br /> Respectfully Sub d, <br /> GrFOL00c'4� TEC�fNZCS 2NC. <br /> Michaeri.Niemi <br /> Geologist <br /> cc: Ron Rowe - SJC PHS/EHD <br /> Elizabeth Thayer- CRWQCB-CVR <br /> Mike McGranahan - Trustee <br /> USTCFP <br />