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ATTACHMENT H:OPERATING DATA (Appendix 2). Daily injection volumes,for the days injection occurs since injection well operation began in 2000,range from 344 to 1,078,400 gallons. The average injection volume is 143,670 gallons,excluding the days the injection did not occur. Figure H-1 shows the daily injection volumes at the STIG-1 well. Daily injection flow rates at the STIG-1 well,also shown on Figure H-1, are relatively consistent. They range from 95.4 to 107.0 psi and average 99.7 for the 8 years of operation. The injection well has two 100 gpm pumps and routine injection generally only utilizes one pump. Therefore,this consistent injection flow rate is reasonable. LEC-1 The LEC-1 well will support the LEC,which is planned to routinely operate to support baseload electricity demands. The injection rate of the well will depend on the number of times the water is cycled through the cooling tower. At 5 cycles,the maximum injection rate is expected to be 197 gpm. The maximum injection flow rate is expected to average 131 gpm at 7 cycles. LEC-2 Specific injection volumes and rates cannot be determined because they will be dependent upon operational demands. However,at no time will the injection rate exceed the permitted rate of 225 gpm. Average and Maximum Injection Pressures The average and maximum injection pressure are presented in this section. STIG-1 The monthly average and maximum historic injection pressures observed during routine operation, or non-testing conditions, are shown in Figure H-2. The historic operating data show that the injection pressures range between 261 (August 2004) and 506 (June 2008) psig. Although there is a general trend to increasing injection pressures over time,this is to be expected. Even with the increase in injection pressure over time, the injection pressure is considerably below the permitted pressure of 975 psig. Several factors were considered for the increase in overall injection pressure,but no specific factor was isolated. No direct relationship was observed between changes in pressure after the well has not operated for up to several months. Additionally,no direct relationship could be identified between the amount of fluid injected and the injection pressure (Figure H-2). Therefore,the observed pressure buildup is attributed to the overall injection process. LEC-1 and LEC-2 The range of injection pressures for the proposed wells is expected to be similar to what has been observed at the STIG-1 well. H-2 SAC/371322/082550024(ATTACHMENT-H.DOC)