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Praxair Services, Inc. <br /> Technical Solutions for the Industrial World. <br /> UC/SCO U <br /> Tracer Research Cormcon <br /> CERTIFICATION OF ELDsm TRACER TIGHT® TEST RESULTS <br /> Date: 4/12-15/2004 Job # 37233NC <br /> Prepaired For: Site Info: <br /> CGRS Safeway <br /> P.O. Box 1489 6426 N. Pacific Ln. <br /> Fort Collins, CO 80522 Stockton, CA <br /> Test Time Period 4(12-15104 <br /> SYSTEM TRACER STATUS <br /> Diesel Tank A Pass <br /> n' Tank A Pass <br /> 91 Tani< A Pass <br /> Pining a; Primarf 'VV Pass <br /> Piping 91 Primary 10d Pass <br /> Piping Vapor Recovery.;Ven; - Pntnary `Al Pass 1 Pass <br /> Fipinc Diegs - Primary 1N Pass <br /> Pipinc Diesel -Vent- Primary 4N Pass <br /> Dispenser Sumps to I Pass <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 Tight& According to EPA standard test <br /> procedures for evaluating leak detection methods, the Enhanced Tracer Tight® method is <br /> capable of detecting leaks of>0.005gallons per hour with a Probability of Detection (PD)of 0.95 <br /> and Probability of false alarm of<0.05 <br /> Tester: Dave Erickson CA Lic.# 03-1663 <br /> Signature: 2 Date: <br /> I declare under penalty of perjury that I 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 <br /> of tracer. <br /> PASS FAIL <br /> Criteria: Criteria: <br /> No Tracer Detected Tracer Detected <br />