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. TABLE 5 AIR SPARGING PILOT TESTING DATA Compass Group USA, Inc 1500 Shaw Road Stockton, California AS Well(IAS1) Observation Well V1W-13 ObservationWell.MW 13A Clock Spargmg Pressure PID Depth to Dissolved Pressure PID Depth to Dissolved Time Pressure Reading Reading Water Oxygen Reading Reading Water Oxygen Date (Elasped) (psig) (m we) (ppmv) (feet) (mg/L) (in w c) (ppmv} (feet) (mg/L) 02/27/02 9 00 (0 00) 4 0 000 23 5265 112 0 000 74 5260 241 10 00 (1 00) 4 0 000 69 5268 082 0 000 82 5258 181 11 00 (2 00) 4 NM NM NM NM NM NM NM NM 12 00 (3 00) 4 0 050 65 5257 087 0 005 44 5254 175 1 00 (4 00) 4 0 065 119 5261 106 0 005 39 5252 2 11 2 00 (5 00) 4 0 150 185 5257 NM 0 005 4 5249 NM 3 00 (6 00) 4 0 030 388 5257 1 17 0 010 3 8 5249 273 4 00 (7 00) 4 0 120 665 5257 NM 0 010 3 3 5250 NM 5 00(8 00) 4 0 300 540 5257 NM NM NM NM NM 02/28/02 8 30 (23 30) 4 0 300 628 52 67 1 52 0 020 10 4 5261 176 AS Well IAS-1) Observation Well VE-2A Observation Well MW-1 Clock Spargmg Pressure PID Depth to Dissolved Pressure PID Depth to Dissolved Time Pressure Reading Reading Water Oxygen Reading Reading Water Oxygen Date (Elasped) (psig) (in we) (ppmv) (feet) (mg/L) (in w.c.) (ppmv) (feet) (mg/L) 02/27/02 9 00 (0) 4 0 000 93 NM NM 0 000 5 7 5346 469 10 00 (1 00) 4 0 030 103 NM NM 0 000 6 5346 445 11 00 (2 00) 4 NM NM NM NM NM NM NM NM 12 00 (3 00) 4 0 090 72 NM NM 0 000 3 9 5343 424 1 00 (4 00) 4 0 150 86 NM NM 0 000 3 5 5339 481 2 00 (5 00) 4 0 150 80 NM NM 0 000 3 5 5339 NM 3 00 (6 00) 4 0 125 93 NM NM 0 000 36 5339 490 4 00 (7 00) 4 0 125 108 NM NM 0 000 34 5339 NM 5 00 (8 00) 4 0 125 122 NM NM0 000 NM NM NM 02/28/02 8 30(23 30) 4 0200 208 NM NM 0 000 2 8 5349 433 psig-pounds per square inch, gauge in w c -inches of water column ppmv-parts per million,volume PID-Photo-loiuzation Detector