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Praxair Services, Inc. <br /> Technical Solutions for the industrial World. <br /> CERTIFICATION OF ELDs"" TRACER TIGHT@ TEST RESULTS <br /> ELD TEST TYPE_ Final <br /> Date: 11/09/04 Job # 37396NC <br /> Prepared For: Site Info: <br /> CGRS Chevron <br /> PO Box 1489 2615 W Grant line Road <br /> Fort Collins, CO Tracy, CA <br /> Start Date: 11/8/2004 End Date: 11/9/2004 <br /> SYSTEM TRACER STATUS <br /> 87 Tank/Sums A Pass <br /> 87 Primary Pipe W Pass <br /> 91 Tank/Sumps A Pass <br /> 91 Primary Pipe W Pass <br /> VR/Vent Primary Pie W Pass <br /> Diesel Tank/Sums A Pass <br /> Diesel Primary Pipe W Pass <br /> Diesel Vent Primary W Pass <br /> iepeneer Sumps #1 61 W Pass <br /> Praxair Services Inc. certifies that the tank and product distribution lines listed In the above table have <br /> been tested by means of Enhanced Tracer Tight. According to EPA standard test procedures for <br /> evaluating leak detection methods, the Enhanced Tracer Tight(&method is capable of detecting leaks of <br /> a0.005gallons per hour with a Probability of Detection(PD) of 0.95 and Probability of false alarm of <br /> <0.05 <br /> Tester: Nick Poynter State Lic. 9 04-16A6 <br /> Signature: Date: 11-9-04 <br /> 1 declare under penalty of perjury that the Information contained in this report is true and correct to the <br /> best of my knowledge. <br /> The following criteria are used for the classification of leakage based on the presence or absence of <br /> tracer. <br /> PASS FAIL <br /> Criteria. Criteria: <br /> No Tracer Detected Tracer Detected <br /> Certlflcation Confirmed by: Date: <br /> Td b1d92:S0 VOOE 6T '(',0H Xtd-� WOdd <br />