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Allen Sorenson: <br />The other potential source of contamination is casing failures in your pressurized injection <br />and recovery well. That's where you can contaminate an aquifer and the water didn't come <br />from the cavity. Something flowing out of your well. It's the air gap and monitoring the air <br />gap. That's why monitoring your system is a better way of detecting rather than monitoring <br />the water. <br />Roger Day: <br />We need the gap between the formation and the solution. There'll always be an air gap <br />between a drinking water aquifer and the solution. How far below this requirement is <br />determined by operating conditions. The gas may extend below the casing and there may be <br />times when it's up into the base of the casing. We'll be experimenting up and down. But <br />we're committed to having air separating fluids from the aquifer. <br />Allen Sorenson: <br />Keeping the air gap in there is a good idea but it doesn't address any possible leakage in the <br />annulus outside the casing. <br />Ned Banta: <br />Monitoring the A- or B- Groove is a potential. <br />Roger Day: <br />Approaching it scientifically is important, but not as important as protecting sources of <br />drinking water. The zone between the A and the B is already a highly fractured separation <br />between these two aquifers. At White River we went through all these discussions about <br />how important maintaining the aquifer separation was. As soon as we started the water pump <br />in the A- Groove, there went the levels in the B Groove in response. It is a very leaky <br />aquitard and the water quality of the A- Groove and the B- Groove is about the same. They <br />mix now on a large regional basis. Any potential solution mining impact are insignificant. <br />However, no impact is expected. <br />END OF TAPE 2 SIDE B <br />(from notes): <br />Paul Daggett: <br />Where are you going to get your process water? <br />Roger Day: <br />We still haven't decided whether it will be from the alluvial or the A- or B- Groove. Each has <br />its advantages. <br />Harry Posey: <br />It's a good idea to emphasis in the permit the redundancy with the mechanical testing of the <br />wells. Are you going to monitor the Uinta? <br />Jerry Daub: <br />No, we're monitoring the A- and B- Grooves. Five quarters equals 13 months of monitoring <br />data. <br />32 <br />