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TANK ANNULAR TESTING <br /> Test Method By: • Manufacturer Industry Standard ':) Professional Engr. J Other(see below) <br /> Test Method Uses: I Pressure • Vacuum c: Hydrostatic Other(see below) <br /> Measuring Equipment Used: Vacuum Gauge (range 0 to 30 inches Hg) <br /> Description Tank#1 Tank#2 Tank#3 Tank#4 <br /> Product stored Gasoline-91 Gasoline-89 Gasoline-87 _ Diesel <br /> Tank manufacturer Trusoo Trusco Trusco Trusoo <br /> Tank material _ Steel Steel Steel Steel <br /> Tank capacity (US gallons) 3,000 5,000 12,000 4,000 <br /> Is this a mufti-compartment tank? Yes Yes _ No Yes <br /> Dry or Brine filled annular? Dry Dry Dry Dry <br /> Monitoring system show normal annular? __ Yes Yes _ Yes -Yes <br /> Is water table above tank bottom? Unknown Unknown Unknown Unknown <br /> Was sensor removed for testing? Yes Yes Yes Yes <br /> Was sensor properly replaced after testing? Yes Yes Yes Yes <br /> Wait time for vacuum to stabilize (hrmin) 0:05 0:05 0:05 _ 005 <br /> Test start time 9:10 AM 9:10 AM 9:14 AM 9.10 AM <br /> Initial vacuum (inches Hg) 7.0 _ 7.0 7.0 _. 7.0 <br /> Test end time 10:10 AM 10:10 AM 10:14 AM 10:10 AM <br /> Final vacuum (inches Hg) 7.0 _ 7.0 7.0 7.0 <br /> Test duration (hr:min) 1:00 1:00 1:00 1:00 <br /> Change in vacuum (inches Hg) 0.0 _ 0.0 0.0 0.0 <br /> Pass/Fail threshold (inches Hg/hour) 2.0 2.0 2.0 2.0 <br /> TEST RESULT PASS PASS PASS PASS <br /> Comments: <br /> 0 2006 Walton Engineering,Inc. <br />