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07/24/2008 19:36 FAX 925 422 2748 WGMG IA007/007 <br />. I . . 0 9 <br />11. When test has been completed, remove all water and retain as test liquid or <br />dispose of in labeled 55 gallon DOT drums, <br />12, Depressurize secondary product lines, pull back test boots or remove valve cores <br />at sumps. Reinstall leak monitor sensor at lowest point and verify operation. <br />Tank. annular spaces: <br />1. Identify and document tank manufacture. <br />2. Verify annular is dry. ( hydrostatically monitored tanks are exempt.) <br />3. Remove annular sensor. (If required) <br />4. Install test plug and cap vent pipe if required. <br />S. Apply vacuum in accordance with manufactures specifications. <br />6. When appropriate vacuum level has been reached, isolate and close off valve. <br />Turn off pump and allow tank to stabilize (up to 1 hour), holding manufactures <br />minimum vacuum level at all times. Once tank has stabilized. <br />7. Document initial vacuum reading and start of test time. <br />S. Monitor vacuum readings for duration of test and record, Run test a minimum of <br />60 minutes for tanks < 20k and 120 minutes for tanks > 20k. <br />9. Document ending vacuum reading and test time. Tank must record a "0.00" <br />differential loss to pass. Any loss of vacuum is a failed test. <br />10. Notify customer immediately of failed test. No repairs can be made without <br />authorization. <br />11. Release vacuum, remove test equipment and reinstall leak monitor sensor to <br />lowest point of annular. Verify operation. <br />Any waste water generated on site and not brought in and hauled out as test water will be <br />stored in appropriately labeled 55 gallon DOT drums for pick up and disposal by a <br />licensed hazardous materials handler. <br />