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CAPACITY 25000 g PRECISION UNDERGROUND TANK TESTING RESULTS Patent Pending TANK D -67-25K-02 PAGE 4 "STAT N/A TEST PROCEDURES TEST DATE: 4/25/1988 Copyright 1985 NDE TECHNOLOGY, INC. PROPRIETARY 1. (a) THE UNDERGROUND STORAGE TANK SYSTEM CERTIFIED TIGHT AT PRODUCT HEIGHT EQUAL TO THE GRADE LEVEL. Yes (b) Allowable leak resolution of instrumentation or allowable change per California Administrative Code Title 23 Waters, Chapter 3 Water Resources Control Board Subchapter 16 Underground Storage Regulations, Part 2643 (b), Page 4.14; 0.05 gallons per hour. *** (c) MEASURED HOURLY CHANGE: LOSS (+) OR GAIN (-) GALLONS OR NUMERICAL LEAK RATE IS: -0.003 Gal/Hr. ----------------------------------------------------------------- This measurement is within the legal limits as defined in (b). (See also computer plots or reduced data of leakage rate, Part III) (See also computer plots or reduced data of leakage rate, Part III) (Calculated leak rate shall be based on data generated during the second hour of testing) Distance from grade level and/or location at which the test was conducted (tank top level, distance below grade level, distance above grade, etc.) 11. Distance from grade level to location test conducted: +6/4 12. Fluid level where the test was conducted. Test Stand 13. Piping Pressure Test - None - Suction Pump Used 14. Pneumatic Pressure Data Amount of pressure applied to system: N/A NDE TECHNOLOGY, INC. PROPRIETARY WATT INC. 3131 FAIRHAVEN DRIVE, BAKERSFIELD, CA 93308 (805) 322-9827 Product level of the storage system at the time of testing: 2. Total product level 174" 3. Fill pipe height 166" from bottom of tank 4. Test pipe height 196" from bottom of tank 5. Grade level 168" from bottom of tank 6. Tank top height from bottom of tank 143" excluding piping, or tank diameter 7. Groundwater level BELOW BOTTOM OF TANK 8. Test conduction - total time Time leak rate calculated 4:00 Hours 9. Start 09:00 10. End 13:00 (See also computer plots or reduced data of leakage rate, Part III) (Calculated leak rate shall be based on data generated during the second hour of testing) Distance from grade level and/or location at which the test was conducted (tank top level, distance below grade level, distance above grade, etc.) 11. Distance from grade level to location test conducted: +6/4 12. Fluid level where the test was conducted. Test Stand 13. Piping Pressure Test - None - Suction Pump Used 14. Pneumatic Pressure Data Amount of pressure applied to system: N/A NDE TECHNOLOGY, INC. PROPRIETARY WATT INC. 3131 FAIRHAVEN DRIVE, BAKERSFIELD, CA 93308 (805) 322-9827