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L <br />CAPACITY 25000 g PRECISION UNDERGROUND TANK TESTING RESULTS Patent Pending <br />TANK * D -67-25K-02 PAGE 7 <br />STAT * N/A TEST PROCEDURES <br />TEST DATE: 4/25/1988 Copyright 1985 <br />NDE TECHNOLOGY, INC. PROPRIETARY <br />COMPUTERIZED PRINTOUT OF DIGITAL LEAKAGE RATE DATA <br />Tank Owner - PACIFIC BELL <br />Tank Number - 02 <br />Measurement # 13 <br />Date of Test 04/25/1988 <br />Time of measurement -12:53:29 <br />Tank Temperature - 64.4801 degrees F <br />Tank Pressure - .1629 psi <br />Basic Tank Volume - 2S@00.040 Gallons. <br />Temperature Correction - S2.081 Gallons. <br />Pressure Correction - .019 Gallons. <br />Corrected Volume - 2S052.140 Gallons. <br />Volume Change - -.0019 Gallons. <br />Expected Level Change - -.14160 inches <br />Measured Level Change - .07760 inches <br />Total Fluid Level - 174.156 inches <br />Primary Apparent Leak - -.003 Gallons. <br />Elapsed time - ®®:56:46 <br />Primary Apparent Leak Rate - -.003 Gallons/Hour <br />Geometry Band - -.0000 Gallons/Hour <br />Stratified Expected Level Change - -.414 inches <br />Stratified Apparent Leak - -.007 Gallons. <br />Stratified Apparent Leak Rate - -.007 Gallons/Hour <br />Averaged Measured Level Change - .06530 inches. <br />Averaged Volume Change - -.0024 Gallons. <br />Averaged Expected Level Change - -.17991 inches. <br />Averaged Apparent Leak - -.003 Gallons., <br />Averaged Apparent Leak Rate - -.00S Gallons/Hour. <br />Averaged Stratified Volume Change - -.0029 Gallons. <br />Averaged Expected Stratified Level Change - -.21247 inches. <br />Averaged Stratified Apparent Leak - -.004 Gallons., <br />Averaged Stratified Apparent Leak Rate - -.005 Gallons/Hour. <br />COMPUTERIZED PLOTS OF LEAKAGE RATE DATA <br />� <br />P <br />.1000 <br />.0900 <br />.0800 <br />.0700 <br />.0600 <br />.0400 <br />.0300 <br />.0200 <br />M <br />.OlOe <br />y® <br />m (D ®� <br />omi <br />—.0100 <br />J <br />-.0200 <br />:` <br />-.0300 <br />-.040 <br />® P <br />- <br />-.0 0 <br />00 <br />TEP TlUg t1INJJTES <br />NDE TECHNOLOGY, INC. PROPRIETARY <br />WATT INC. 3131 FAIRHAVEN DRIVE, BAKERSFIELD, CA 93308 (805) 322-9827 <br />