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DAY QR NIGHT CERTIFICATE <br />R TELEPHONE <br />(510) 235-1393 CERTfIED SERVICES COM*PANY <br />255 Parr Boulevard Richmond, California 94801 <br />FOR: Li �"SCn , Inc TANK NO. 8 J <br />LOCATION: <br />R1ch:nond <br />TEST METHOD � isual Gastech/1314 SMP' <br />f— r- <br />• rc a, 0 0 1 <br />CUSTOMER <br />RIEDEL <br />JOB NO. <br />18208 <br />DATE: <br />04/24/92 TIME: 08;12;34 <br />LAST PRODUCT LG <br />This is to certify that I have personally determined that this tank is in accordance with the American <br />Petroleum Institute and have found the condition to be in accordance with its assigned designation. <br />This certificate is based on conditions existing at the time the inspection herein set forth was <br />completed and is issued subject to compliance with all qualifications and instructions. <br />4000 Gallon Tank <br />CONDITION <br />REMARKS: OXYGEN 20.9 <br />00 <br />LOWER EXPLOSIVE LT%IIT LESS THAN 0.10, <br />SAFE FOR FIRE <br />"ERICKSON INC. HEREBY CERTIFIES THAT THE ABOVE NUMBERED TANK HAS BEEN <br />CLOT OPEN, PROCESSED, AND THEREFORE DESTROYED AT OUR PERMITTED HAZARDOUS <br />WASTE FACILITY.„ <br />In the event of any physical or atmospheric changes affecting the gas -free conditions of the above tanks, or if in any doubt, <br />immediately stop all hot work and contact the undersigned. This permit is valid for 24 hours if no physical or atmospheric <br />changes occur. <br />f <br />SAFE FOR MEN: Means that in the compartment or space so designated (a) The oxygen content of the atmosphere is at least <br />19.5 percent by volume; and that (b) Toxic materials in the atmosphere are within permissable concentrations; and (c) In the <br />judgment of the Inspector, the residues are not capable of producing toxic materials under existing atmospheric conditions <br />while maintained as directed on the Inspector's certificate. <br />SAFE FOR FIRE: Means that in the compartment so designated (a) The concentration of flammable materials in the <br />atmosphere is below 10 percent of the lower explosive limit; and that (b) In the judgment of the Inspector, the residues are <br />not capable of producing a higher concentration that permitted under existing atmospheric conditions in the presence of fire <br />and while maintained as directed on the Inspector's certificate, and further, (c) All adjacent spaces have either been cleaned <br />sufficiently to prevent the spread of fire, are satisfactorily inerted, or in the case of fuel tanks, have been treated as deemed <br />necessary by the Inspector. <br />The undersigned represejtative acknowledges receipt of this certificate and understands the conditions and limitations under <br />which it was issued.! f f 1, <br />REPRESENTA <br />TITLE <br />n� <br />fl . <br />INSPE&OR <br />