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TANK ANNULAR TESTING <br />Test Method By: • Manufacturer O 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 <br />Tank manufacturer <br />Gasoline - 87 <br />Xerxes <br />Gasoline - 89 <br />Xerxes <br />Gasoline - 91 <br />Xerxes <br />Tank material <br />FRP <br />FRP <br />FRP <br />Tank capacity (US gallons) <br />10,000 <br />10,000 <br />8,000 <br />Is this a multi -compartment tank? <br />No <br />No <br />No <br />Dry or Brine filled annular? <br />Monitoring system show normal annular? <br />Dry <br />Yes <br />Dry <br />Yes <br />Dry <br />Yes <br />Is water table above tank bottom? <br />Unknown <br />Unknown <br />Unknown <br />Was sensor removed for testing? <br />No <br />No <br />No <br />Was sensor properly replaced after testing? <br />N/A <br />N/A <br />N/A <br />Wait time for vacuum to stabilize (hr:min) <br />0:10 <br />0:10 <br />0:10 <br />Test start time <br />10:24 AM <br />10:24 AM <br />10:24 AM <br />Initial vacuum (inches Hg) <br />10.0 <br />10.0 <br />10.0 <br />Test end time <br />11:24 AM <br />11:24 AM <br />11:24 AM <br />Final vacuum (inches Hg) <br />10.0 <br />10.0 <br />10.0 <br />Test duration (hr:min) <br />1:00 <br />1:00 <br />1:00 <br />Change in vacuum (inches Hg) <br />0.0 <br />0.0 <br />0.0 <br />Pass/Fail threshold (inches Hg / hour) <br />2.0 <br />2.0 <br />2.0 <br />TEST RESULT <br />PASS <br />PASS <br />PASS <br />Comments: <br />The annulars for tanks #1 - #3 are manifolded together with a single annular vent line. <br />The vent was capped and a single unified test was performed with vacuum gauges <br />on each annular riser. Tank #1 was used to record the test. The vent cap was <br />replaced upon completion of the test. <br />© 2004 Walton Engineering, Inc. <br />