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DAY OR NIGHT CERTIFICATE TELEPHONE CERTIFIED SERVICESO ANY CUSTOMS- URS CORPORATION (510)235-1393 255 Parr Boulevard Richmond,California 94801 JOB.NO 52T3257 Downing Ave FOR: ECOLOGY CONTROL !NC TANK NO.:33295 Stockton, Ca. LOCATION:RICHMOND DATE:1 /21/06 TIME: 3:45pm TEST METHOD.VISUAL GASTECHM314 SLV„IPN LAST PRODUCT HEATING OIL This is to certify that I have personally determined that this is in accordance with the American PetroleumInstitute 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 : 100 GALLON CONDITION:SAFE FOR FIRE REMARKS: OXYGEN 20.9% LOWER EXPLOSIVE LIMITLESS THAN 0.1% ECOLOGY CONTROL INDUSTRIES HEREBY CERTIFIES THAT THE ABOVE NUMBERED TANK HAS BEEN CUT OPEN,PROCESSED AND THEREFORE DESTROYED AT OUR PERbIITTED HAZARDOUS WASTE FACILITY. ECOLOGY CONTROL INDUSTRIES HAS THE APPROPRIATE PERMITS FOR AND HAS ACCEPTED THE TANK SHIPPED TO US FOR PROCESSING. In the event of any physical or atmospheric changes affecting the gas-free conditions of the above tanks, or it 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. STANDAPLD SAFETY DESIGNATION SAFE FOR MEN: Means that in the compartment or space 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 permissible concentrations; and(c) In the judgment of 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. The undersigned representative acknowledges receipt of this certificate and understands the conditions and limitations under which it was issued�TIVl or R ESENTTITLE INSPSCTOR Z,d 60L£9CZ0I,9l, puouayoW - 1 0 3 del:V0 LO CO U'8r