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Table 4 Oxygen Injection Summary • 7-Eleven Store#19976 1399 Main Street Manteca California Oxygen Injection Data Cumulative Dissolved Oxygen Oxygen Mass Length of Mass Oxygen Pre- After Well Date of Volume Injected Injection Injected Injection Injection Number Injection Injected(ft') (pounds) (hours) (pounds) (mg1L) (mg/L) Comments SP-1A 03/14/03 150 134 13 134 70 258 SP-1 &SP-1A Injected Simultaneously 04/10102 150 134 -- 267 159 356 SP-1 &SP-1A Injected Simultaneously 04/21/03 150 134 08 401 379 41 8 SPA &SP-1A Injected Simultaneously 05/02103 150 134 15 534 244 433 SPA &SP-1A Injected Simultaneously 05/12103 150 134 15 668 198 433 SP-1 &SP-1A Injected Simultaneously 07/24103 0 00 -- 668 65 390 SP-1A not injected 08/04/03 150 134 10 801 -- -- SPA &SP-1A Injected Simultaneously 08/19103 150 134 10 935 -- -- SPA &SP-1A Injected Simultaneously 09/05/03 150 134 12 1068 41 84 SPA &SP-1A Injected Simultaneously 09/16/03 150 134 10 1202 60 193 SPA &SP-1A Injected Simultaneously 11/07/03 150 134 1 5 1335 84 164 SP-1 &SP-1A Injected Simultaneously 12/12/03 150 134 08 1469 33 236 SPA &SP-1A Injected Simultaneously 12/22/03 150 134 1 0 1602 -- -- SPA &SP-1A Injected Simultaneously 01/07/04 150 134 05 1736 -- SP-1 &SP-1A Injected Simultaneously 01/23/04 150 134 1 0 1869 -- -- SPA &SP-1A Injected Simultaneously 02/04/04 150 134 1 0 2003 -- - SP-1 &SP-1A Injected Simultaneously 02/19/04 150 134 05 2136 - SPA &SP-1A Injected Simultaneously 03/05/04 150 134 1 0 2270 - — SPA &SP-1A Injected Simultaneously . 03/22/04 150 134 05 2403 - — SPA &SP-1A Injected Simultaneously 03/30104 150 134 05 2537 460 460 SPA &SP-1A Injected Simultaneously 04/12/04 150 134 08 2670 — -- SP-1 &SP-1A Injected Simultaneously 04/23/04 150 134 1 0 2804 401 460 SP-1 &SP-1A Injected Simultaneously 05/13/04 125 11 1 08 291 5 -- -- SP-1 &SP-1A Injected Simultaneously 05/18/04 150 134 1 0 3048 -- -- SP-1 &SP-1A Injected Simultaneously 05/24/04 150 134 1 0 3182 -- SP-1 &SP-1A Injected Simultaneously 06/07/04 150 134 05 331 5 - SP-1 &SP-1A Injected Simultaneously 06/21/04 150 134 05 3449 - SP-1 &SP-1A Injected Simultaneously 07/19/04 150 134 05 3582 - SPA &SP-1A Injected Simultaneously 08/02/04 150 134 05 3716 -- SPA &SP-1A Injected Simultaneously 08/16/04 150 134 08 3849 - 5P-1 &SP-1A Injected Simultaneously 08/30/04 150 134 05 3983 - - SP-1 &SP-1A Injected Simultaneously 09/13/04 150 134 07 411 6 - - SP-1 &SP-1A Injected Simultaneously 10/01/04 150 134 05 4250 - - SPA &SP-1A Injected Simultaneously 10/14/04 150 134 05 4383 — SP-1 &SP-1A Injected Simultaneously 10/25/04 150 134 08 451 7 -- -- SP-1 &SP-1A Injected Simultaneously 11/08104 150 134 05 4650 -- -- SP-1 &SP-1A Injected Simultaneously 12/08/04 150 134 05 4784 -- SP-1 &SP-1A Injected Simultaneously 12/20104 150 134 05 491 7 — - SP-1 &SP-1A Injected Simultaneously Explanation [;96 ilotal Pounds Oxygen Injected Dissolved Oxygen Readings collected using downhole meter mg/L=milligrams per liter W=cubic feet 1 ft'Oz=0 089 Ib of 02 -=Not measured/not sampled 7-ELevenl7-11 Stores/24248/Tables/19976 O&M Data 04-04 As Page 2 of 2