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i s e a.r /y DAY OR NICHT CERTIFICATE - NO. 29I17q1 TELEPHONE (51D) 236-1393 CERTIFIED SERVICES COMPANY CUSTOMER 255 Parr Boulevard • Richmond, California 94$01 Boa Na, 5209224 HENDERSON CONST. FOR: ECOLOGY CONTROL IND-TANK NO. 26792 LOCATION: RICHMOND,CA DATE: 7/28199 TIME:11,50:43 TEST METHOD Vlt3UAtt3At3'!'ECHf1314 BMPN UO LAST PRODUCT This Is to certify that I have personally determined that this tank Is In accordance with the American Petroleum Institute and have found the condition to be in accordance with its assigned designation. This certificate Is based on conditions existing at the time the Inspection herein set forth was completed and Is Issued subject to compliance with all qualifications and Instructions, TANK SIZE f a'000 GALLON TANK CONDITION RAFE FOR FIRE REMARKS: OXYGEN 20.9%LOWER EXPLOSIVE LIMIT LESS THAN 0.1%ECOLOGY CONTROL INDUSTRIES HERBY CERTIFIES THAT THE ABOVE NUMBERED TANK HAS BEEN CUT OPEN,PROCESSED, AND THEREFORE DESTROYED AT OUR PERMITTED HAZARDOUS WASTE FACILrN. TWE 1ANX SWIMO 10 11,11 EOR PROCESSING In the event of any physical or atmospheric changes affecting the gas-free conditions of the above tanks, or if In any doubt, immediately stop all hot work and contact the undersigned. This permit is valid for 24 hours if no physical or atmospheric changes occur. STANDARD SAFETY DESIGNATION SAFE FOR MEN: Meana that in the compartment or apace so designated (a) The oxygen content of the atmosphere Is at least 19.5 percent by volume; and that (b) Toxic materials In the atmosphere are within permissable concentrations; and (c) in the judgment of the Inspector, the residues are not capable of producing toxic materials under existing atmospheric conditions while maintained as directed on the Inspector's certificate. SAFE FOR FIRE: Means that In the compartment so designated (a) The concentration of flammable materials in the atmosphere Is below 10 percent of the lower explosive limit; and that (b) In the judgment of the Inspector, the residues'are not capable of producing a higher concentration that permitted under existing atmospheric conditions in the presence of fire and while maintained as directed on the Inspector's certificate, and further, (c) All adjacent spaces have either been cleaned sufficiently to prevent the spread of fire, are satisfactorily inerted, or in the case of fuel tanks, have been treated as deemed necessary by the Inspector. Theunderal ned repres live acknowledges receipt of this certificate and understands t e con ItIons and Ii it i s under wlNch sued. / REP E ENTATIVE { TITLEN TOR rj ,lir ! i l fik,� Ci1r,n r,4.r rn, is inn n �nnnr -. , nr.•.: