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ORIGINAL <br /> Praxair Services, Inc. <br /> Technical Solutions for the Industrial World. <br /> 1 A�1 <br /> UCi C , � a � a +srrx ¢�p� E1`aV1RONPN ES <br /> pE;�fiJ�11(SE <br /> CERTIFICATION OF ELDSM 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/ Sumps A Pass <br /> 87 Primary Pipe W Pass <br /> 91 Tank/ Sumps A Pass <br /> 91 Primary Pipe W Pass <br /> VR/Vent Primary Pipe W Pass <br /> Diesel Tank/ Sumps A Pass <br /> Diesel Primary Pipe W Pass <br /> Diesel Vent Primary W Pass <br /> Dispenser Sumps #1 61 1 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 /> >0.005gallons per hour with a Probability of Detection (PD) of 0.95 and Probability of false alarm of <br /> <0.05 <br /> Tester: Nick Poynter tate Lic. # 04-1686 <br /> Signature: Date: 11-9-04 <br /> I declare under penalty of perjury t at-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 /> cut'sitsQ »>» >> [>[[>1 >` > i > >> ....... 1'`<......::;<:':<_ > >:>:<<;>:: <br /> :::...:.-.--......._............ _ .................................................................. .....- <br /> Certification Confirmed by: --3ti�„ Date: ` <br />