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TANK ANNULAR TESTING <br /> Test Method By : • Manufacturer C Industry Standard O Professional Engr, O Other (see below) <br /> Test Method Uses : o 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 - 89 Gasoline - 91 <br /> Tank manufacturer Unknown Unknown Unknown <br /> Tank material Steel Steel Steel <br /> Tank capacity (US gallons) 12 , 000 10 , 000 8 ,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 :05 0 :05 0 :05 <br /> Test start time 9 :59 AM 9 :47 AM 9 :39 AM <br /> Initial vacuum (inches Hg) 7.0 7 .0 7 . 0 <br /> Test end time 10 :59 AM 10:47 AM 10:39 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 /> © 2017 Walton Engineering , Inc. <br />