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Frorn:LEDCOR CONSTRUCTIC 206 2308833 03*2004 12:26 #100 P.002/002 <br /> 03/29/2004 11:33 FAX 1 002 <br /> € raxa'sr Services, inc. <br /> Technical Solutions for the Industnal World <br /> UGISGO J Tra09r RBGeMrch Corrocon <br /> CER IFIC TIO�4 OF EL SMT AC R TIGHT® TEST RESULTS <br /> Date: 03102/04 Jots# 37197NC <br /> Prepared For: Site info: <br /> Costco <br /> Ledcor Construction <br /> 1618 E. Hammer Lane <br /> 9655 SE 36th St. Suite 210 Stockton, CA 95210 <br /> Mercer Island,WA 98040 <br /> Test Time Period 0 310 1-0 210 4 STATUS <br /> SYSTEM TRACER <br /> MTankh (Tank1) R PASth (Tank 2) R PASS <br /> (Tank 3) RPASS <br /> 7 PnmaryN PASS <br /> 91 Primary W PASS <br /> 89 Primary N PASS <br /> piping Vapor Recovery Primary W PASS <br /> Piping Vent Primary <br /> Piping Diesel -Primary <br /> Piping iesei -Vent- Primary N PASS <br /> Dispenser Sumps <br /> Praxair Services Inc. certifies that the tank and product distribution lines listed in the above table <br /> have been tested by means,of Enhanced Tracer Tights. According to EPA standard test Procedures <br /> for evaluating leak detection methods,the Enhanced Tracer Tight®method is capable of detecting <br /> leaks of>o.005gallons per hour with a Probability of Detection (PD)of 0.95 and Probability of false <br /> alarm of<0.05 <br /> Tester: Clarence Sullivan CA Lic.# 1604 <br /> Date: 312104 <br /> Signature: 4"Z <br /> I declare under penalty of perjury that 1 am a licensed tank tester in the State of California and that <br /> the information contained in this report is true and correct to the best of my knowledge. <br /> The following criteria are used for the classification of leakage based on the presence or absence of <br /> tracer. FAIL <br /> PASS <br /> Criteria: Criteria. <br /> No Tracer Detectecl Tracer Detected <br />