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TANK ANNULAR TESTINGENVIRONMENTAL' <br /> Test Method By • Manufacturer O Industry Standard 0 Professional Engr.[.(F:XYr0Ivqc0nmft !'+ <br /> Test Method Uses: o Pressure • vacuum o Hydrostatic o Other(see below) <br /> Measuring Equipment Used: Vacuum Gauge (range D to 30 inches Hg) <br /> Description Tank#1 Tank#2 Tank#3 <br /> Product stored Gasoline-87 Gasoline-91 Diesel <br /> Tank manufacturer Modern Modern Modern <br /> Tank material Steel Steel Steel <br /> Tank capacity (US gallons) 8,000 4,000 12,000 <br /> Is this a multi-compartment tank? Yes Yes No <br /> Dry or Brine filled annular? Dry N/A Dry <br /> Monitoring system show normal annular? Yes Yes <br /> Is water table above tank bottom? Unknown Unknown <br /> Was sensor removed for testing? Yes Yes <br /> Was sensor properly replaced after testing? Yes Yes <br /> Wait time for vacuum to stabilize (hrmin) :20 :20 <br /> Test start time 10:53 AM 10:43 AM <br /> Initial vacuum (inches Hg) 7.0 7.0 <br /> Test end time 11:53 AM 11:43 AM <br /> Final vacuum (inches Hg) 7.0 7.0 <br /> Test duration (hr:min) 1:00 1:00 <br /> Change in vacuum (inches Hg) 0.0 0.0 <br /> Pass/Fail threshold (inches Hg/hour) 2.0 2.0 <br /> TEST RESULT PASS PASS <br /> Comments: <br /> Tank#2 is the second compartment of a two compartment tank(#1 /#2). <br /> 0 2015 Walton Engineering,Inc. <br />