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FEB-20-2008 09:03 Service Station Systems 408 938 8888 P.04 <br /> 4. TANK ANNULAR TESTING <br /> 'fest Method Developed By: ❑Tank Manufacturer ®Industry Standard ❑ Professional Engineer <br /> ❑ Other(Specify) <br /> Test Method Used: ❑Pressure ®Vacuum ❑Hydrostatic <br /> ❑Other(Specify) <br /> Test Equipment Used:Test plugs,venturi pump and gauges Equipment Resolution: 0.5% of span <br /> Tank <br /> :87 Tank# 89 Tank#91 <br /> Is Tank Exempt From Testing?` ❑Yes ® No []Yes ® No ❑Yes X No <br /> Tank Capacity: 10k l0k l0k <br /> Tank Material: Fiberglass Fiberglass Fiberglass <br /> Tank Manufacturer: Owens corning Owens corning Owens corning <br /> Product Stored: Gasoline Gasoline Gasoline <br /> Wait time between applying <br /> pressure/vacuum/water and 10 minutes 10 minutes 10 minutes <br /> starting test: <br /> Test Start Time: 1:30 pm 2:40 pm 3:50 pm <br /> Initial Reading(R,): 7"hg 7"hg 7"hg <br /> Test End Time: 2:30 pm 3:40 pm 4:50 pm <br /> Final Reading(RF): 7"hg 7"hg 7"hg <br /> Test Duration: 1 hour 1 hour 1 hour <br /> Change in Reading(RF R,): None None None <br /> Pass/Fail Threshold or Criteria: No detectable loss No detectable loss No detectable loss <br /> Test Result: M Pass Fail O Pass Fail M Pass Fail <br /> Was sensor removed for testing? ®Yes ❑ No ❑NA ®Yes ❑No ❑NA ®Yes ❑No ❑NA <br /> Was sensor properly replaced and ®Yes❑No ❑NA ® Yes ❑No E]NA ®Yes [I No ❑NA <br /> verified functional after testing? <br /> COMMelltS—(include information on repairs made prior to testin{,and recommended follow-up for failed tests) <br /> "Sensor functionality was not confirmed.This procedure is not part of the Secondary Containment testing scope 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 />