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CAPACITY 6,000 g PRECISION UNDERGROUND TANK TESTING RESULTS Patent Pending <br />TANK <br /># North <br />PAGE 4 <br />STAT <br /># N/A <br />TEST PROCEDURES <br />TEST <br />DATE: <br />10/27/1988 <br />Copyright 1985 <br />NDE TECHNOLOGY, INC. PROPRIETARY <br />1. <br />(a) <br />THE UNDERGROUND <br />STORAGE TANK SYSTEM CERTIFIED TIGHT AT PRODUCT <br />HEIGHT EQUAL TO <br />THE GRADE LEVEL. Yes <br />(b) <br />Allowable leak resolution <br />of instrumentation or allowable change <br />per California <br />Administrative Code Title 23 Waters, Chapter 3 <br />Water Resources <br />Control Board Subchapter 16 Underground Storage <br />Regulations, Part <br />2643 (b), Page 4.14; 0.05 gallons per hour. <br />*k <br />(c) <br />MEASURED HOURLYCHANGE <br />OR GAIN (-) GALLONS OR <br />NUMERICAL LEAK RATE"IS: <br />0.028 Gal Hr. <br />This measurement <br />is within the legal limits as defined in (b). <br />(See also <br />computer plots <br />or reduced data of leakage rate, Part III) <br />Product <br />level of the <br />storage system at the time of testing: <br />2. <br />Total <br />product level <br />146° <br />3. <br />Fill <br />pipe height <br />from <br />bottom of tank <br />140" <br />4. <br />Test <br />pipe height <br />from <br />bottom of tank <br />170" <br />5. <br />Grade <br />level <br />from <br />bottom of tank <br />144° <br />6. <br />Tank <br />top height from <br />bottom of tank <br />excluding <br />piping, or <br />tank diameter 96`° <br />7. <br />Test <br />conduction - <br />total <br />time <br />Time <br />leak rate calculated <br />1:04 Hours <br />8. <br />Start <br />10:01 <br />9. <br />End <br />11:05 <br />(See also computer plots or reduced data of leakage rate, Part III) <br />(Calculated leak rate shall be based on data generated during the <br />second hour of testing) <br />Distance from grade level and/or location at which the test was <br />conducted (tank top level, distance below grade level, distance <br />above grade, etc.) <br />10. Distance from grade level to location <br />test conducted: +2" <br />11. Fluid level where the test was conducted. Test Stand <br />12. Does the tank show the presence of vapor pockets? <br />No <br />If yes, was the owner informed of steps that must be taken to <br />release all vapor pockets in order to complete testing? <br />Owners of storage tanks are under a legal obligation to report <br />any leaking tanks to the agency having jurisdiction of the tank <br />test. <br />NDE TECHNOLOGY, INC. PROPRIETARY <br />WATT INC. 3131 FAIRHAVEN DRIVE, BAKERSFIELD, CA 93308 (805) 322-9827 <br />