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925-307-1500 <br /> MARCOR Remediation, Inc. 925-307-1510 (FAX) <br /> 66AA Sierra Lane 800-888-9501 <br /> Dublin, CA 94568-2793 w .marcoccom <br /> CA License#736681 25 Venr5 <br /> April 27, 2005 <br /> Richard Ryan <br /> Neil O. Anderson & Associates, Inc <br /> 902 Industrial Way <br /> Lodi, CA 95240 <br /> Per your request: <br /> I Derek Janich, Project Manager, hereby state that MARCOR Remediation Inc., <br /> Triple Rinsed the Aviation Gas, 12,000 GL. Double Walled, UST on <br /> 4/19/05 and lowered the LEL levels within the UST from 100% down to 5%. <br /> On 4/20/05 at approximately 9:00 a.m. MARCOR monitored the UST with an <br /> LEL Meter and noted a reading at the top, middle and bottom of the UST of 0% <br /> LEL. MARCOR then excavated the UST and prepared for a 4/21/05 removal <br /> at 1:00 p.m. <br /> On 4/21/05 MARCOR then inerted with 400 lbs. of Dry Ice <br /> and lowered the 02 levels down to below 5%. The 110 gallons of rinsate <br /> will be hauled off the site under Uniform Hazardous Waste Manifest for <br /> disposal. <br /> Thank you, <br /> M. D k Janich <br /> Proj ct Manager <br /> 510-376-4607 cell <br /> 925-307-1500 office / 925-307-1510 Fax <br /> MARCOR Remediation, Inc. <br /> 6644 Sierra Lane <br /> Dublin, CA 94568 <br /> ASBESTOS•LEAD•MOLD•PCBs•TANKS•HAZWASTE•COATINGS•SOIL•GROUNDWATER•DECOMMISSIONING•DEMO•DISASTERS <br />