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ii <br /> Geofoglca[TeclYics -Inc* <br /> 2741 Rover Roar! <br /> } Mo&sto,California 95351 <br /> - (209)538-64241`fax#538-5852 <br /> December 4, 1997 <br /> OEC D 8 1997 <br /> GTI Project No.. 251.3 <br /> GTI Project Name: McGranahan(Gawne Rd.) Cf9iu �: ".;IAL HEALTH <br /> Ms. Diane Bufalacchi PERMIT-" <br /> ERNii1 /SERVICES <br /> San Joaquin Valley Unified Air Pollution Control District <br /> 4230 Kiernan Road, Suite 130 <br />` Modesto, California 95356 . <br /> 4 <br /> RE: Authority To Construct(N-3946-1-0)Inspection Lab Test Results (11112197) <br /> Former Moresco Property, 16865 Gawne Rd., Stockton, CA 95352 <br /> Dear Ms.-Bufa <br /> Herewith attached are copies of the laboratory data (Air Toxics LTD.)j,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. <br /> 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 /> i - <br /> Respectfully Sub ed, <br /> f <br /> Michael J. Niemi 1 °� <br /> a3 <br /> Geologist <br /> f <br /> cc: Ron Rowe - SJC PHS/EHD <br /> Elizabeth Thayer- CRWQCB-CVR <br /> Mike McGranahan- Trustee <br /> USTCFP <br /> I <br /> kF <br /> I <br /> y <br />