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CAPACITY 2500 g. PRECISION UNDERGROUND TANK TESTING RESULTS Patent Pending TANK * Field Office PAGE 2 STAT # N/A SHORT REPORT FORM - TEST PROCEDURES TEST DATE: 05/03/1988 Copyright 1985 NDE TECHNOLOGY, INC. PROPRIETARY COMPUTERIZED PRINTOUT OF DIGITAL LEAKAGE RATE DATA Tank Owner - CA. WATER SERVICE CO. Tank Number - STCKTN 2.5K FLO OFFICE Measurement 4 14 Date of Test 05/03/1988 Time of measurement =11:37:26 Tank Temperature = 71.8974 degrees F Tank Pressure = .3521 psi Basic Tank Volume = 2500.599 Gallons. Temperature Correction = 19.694 Gallons. Pressure Correction = 005 Gallons. Corrected Volume = 2520.298 Gallons. Volume Change - -.0063 Gallons. Expected Level Change - -.10247 inches Measured Level Change = .46913 inches Total Fluid Level = 99.066 inches Primary Apparent Leak - -.035 Gallons. Elapsed time = 00:S9:50 Primary Apparent Leak Rate = -.035 Gallons/Hour Geometry Band = -.0001 Gallons/Hour Secondary Expected Level Change = -.102 inches Secondary Apparent Leak = -.034 Gallons. Secondary Apparent Leak Rate = -.034 Gallons/Hour Stratified Expected Level Change - -.166 inches Stratified Apparent Leak = -.039 Gallons. _ Stratified Apparent Leak Rate = -.039 Gallons/Hour Averaged Measured Level Change = .44311 inches. Averaged Volume Change = -.0046 Gallons. Averaged Expected Level Change - -.07502 inches. Averaged Apparent Leak = -.032 Gallons. , Averaged Apparent Leak Rate = -.039 Gallons/Hour. Averaged Stratified Volume Change - -.0083 Gallons. Averaged Expected Stratified Level Change = -.13487 inches. Averaged Stratified Apparent Leak - -.035 Gallons. , Averaged Stratified Apparent Leak Rate = -.044 Gallons/Hour. COMPUTERIZED PLOTS OF LEAKAGE RATE DATA .1000 .0800 .0800 .0700 .0600 Pass A152A ro .0400 o✓ .0300 .0200 J .0100 me� m m m N -.0100 -, -.0200 -.0300 _ -.0400 r- Pas - 00 TEST TIME - HINUIES NDE TECHNOLOGY, INC. PROPRIETARY WATT INC. 3131 FAIRHAVEN DRIVE, BAKERSFIELD, CA 93308 (805) 322-9827