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DEC-03-2007 11:37 Service Station Systems 408 938 8888 P.04 <br /> 4. TANK ANNULAR TESTING <br /> Test Method Developed By: ❑Tank Manufacturer 0Industry Standard ❑ Professional Engineer <br /> ❑ Other(Specify) <br /> Test Method Used: ❑Pressure 0 Vacuum ❑Hydrostatic <br /> ❑Other(Specify) <br /> Test Equipment Used: Test plugs, venturi pump and gauges Equipment Resolution: 0.5%a of span <br /> Tank#87 Tank It 91/DSL <br /> Is Tank Exempt From Testing?' ❑ Yes 0 No ❑ Yes 0 No <br /> Tank Capacity: 12k 12k <br /> Tank Material: Fiberglass Fiberglass <br /> Tank Manufacturer: Modern welding Modern welding <br /> Product Stored: Gasoline Gasoline/Diesel <br /> Wait time between applying <br /> pressure/vacuum/water and 10 min. 10 min, <br /> starting test: <br /> Test Start Time: 12:30 pm 1:45 pm <br /> Initial Reading(RD: 7"Hg 7"Hg <br /> Test End Time: 1:30 pm 2:45 pm <br /> Final Reading(RF): 7"Hg 7"Hg <br /> Test Duration: 1 hr. 1 hr. <br /> Change in Reading(RF-R): None none <br /> Pass/Fail Threshold or Criteria: No detectable Loss No detectable Loss <br /> Test Result: © Pass Fail El Pass Fait <br /> Was sensor removed for testing? 0 Yes ❑No ❑NA 0 Yes.❑No ❑NA <br /> Was sensor property replaced and ® yes ❑No El NA ® Yes El No❑NA <br /> verified functional after testing? <br /> COMMentS—(utclude in rmation on repairs made prior to testing, and recownewied ollow-up forfailed tests) <br /> "Sensor functionality was not confirmed This procedure is not part of t_he <br /> Secondary Containment testing scone Of work" <br /> Secondary containment systems where the continuous monitoring automatically monitors both the primary and secondary <br /> containment,such as systems that are hydrostatically monitored or under constant vacuum,are exempt from periodic containment <br /> testing. {California Code of Regulations,Title 23,Section 2637(a)(6)) <br />