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i <br /> Ge0Cogccal Techics lac, <br /> l l o�7�st. LJ� <br /> Modesto,California 95354 <br /> (209)522-4119/Fax#522-4227 <br /> 8z8zooz <br /> ' February 22, 2002 ��-WENT HEALTH <br /> - PERMIT/SERVICES <br /> GTI Project No.: 750.3 <br /> GTI Project Name: City of Escalon <br /> Ms Heather Kulclo <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-4546-1-0) Startup Inspection Monitoring Results (2/5/02) <br /> ) <br /> City of Escalon(Former Arco Mini Mart), 1305 Escalon, Ave.,Escalon, CA <br /> Dear Ms Kuklo: <br /> Attached are copies of the laboratory data (Air Toxics) for the influent and effluent air samples <br /> collected on February 5, 2002 during the startup inspection of the internal combustion engine <br /> (I.C.). The I.C. is being used to control emissions from the soil vapor extraction system <br /> operating at the Former Arco Mini Mart site. <br /> The attached calculations show that the I.C. was meetingthe 95% efficiency standard and that <br /> Y <br /> the effluent emissions are below the required 40.7 pounds per day. The I.C. has been in <br /> Y continuous operation since the February 5, 2002 inspection. <br /> The laboratory results for the effluent show the presence of high levels of hydrocarbons in the <br /> "C2-C4" range. However, the influent results did not show the presence of "C2-C4" range <br /> hydrocarbons. A call was made to Air Toxics Ltd. regarding this inconsistency. Lisa Argento <br /> reported that "C2-C4" hydrocarbons in the effluent could be a result of unburned propane, <br /> which is a "C3" hydrocarbon. The contractor supplying the I.C. has been contacted and was <br /> f asked to reduce the volume ofpropane being added as supplemental fuel. <br /> fMonthly samples will continue to be collected and the results will be submitted to your office. <br /> If you should have any questions regarding this project please contact myself or Ray Kablanow <br /> at the office. <br /> Respectfully omitted, <br /> GFOLOGlCdL TFCidNlCS!NG <br /> w <br /> Michael J. Niemi <br /> Geologist <br /> w <br /> cc: Lori Duncan—SJC PHS/EHD <br /> Gordon Boggs—RWQCB-CVR <br /> + -1 Doug Stidham—City of Escalon <br /> �'` USTCFP <br />