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TANK ANNULAR TESTING <br /> IDEPARTMiEN <br /> Test Method By: • Manufacturer O Industry Standard O Professional Engr. O Other(see below) <br /> Test Method Uses: Pressure • vacuum o Hydrostatic o Other(see below) <br /> Measuring Equipment Used: Vacuum Gauge (range 0 to 30 inches Hg) <br /> -Description Tank#1 Tank#2 Tank#3 <br /> Product stored Gasoline-87 Gasoline-91 _ _ Diesel <br /> Tank manufacturer Modem _ Modern Modem <br /> Tank material Steel Steel Steel <br /> Tank capacity (US gallons) 12,000 8,000 10,000 <br /> Is this a multi-compartment tank? No No No <br /> Dry or Brine filled annular? Dry Dry Dry <br /> Monitoring system show normal annular? _ Yes Yes Yes <br /> Is water table above tank bottom? Unknown Unknown Unknown <br /> Was sensor removed for testing? Yes Yes Yes <br /> Was sensor properly replaced after testing? Yes Yes Yes <br /> Wait time for vacuum to stabilize (hr:min) 0:10 _ 0:10 0:10 <br /> Test start time 10:10 AM 10:05 AM 9:57 AM <br /> Initial vacuum (inches Hg) 7.0 7.0 7.0 <br /> Test end time 11:10 AM 11:05 AM 10:57 AM <br /> Final vacuum (inches Hg) 7.0 7.0 7.0 <br /> Test duration (hr:min) 1:00 1:00 1:00 <br /> Change in vacuum (inches Hg) 0.0 0.0 0.0 <br /> Pass/Fail threshold (inches Hg/hour) 2.0 2.0 2.0 <br /> TEST RESULT PASS PASS PASS <br /> Comments: <br /> 02017 Walton Engineering,Inc. <br />