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• •' <br />Roger Day: <br />There is nothing these people can do that concerns us. We went through that. There's a <br />spring that comes out right here at the base of the hill near Ryan and Piceance Creek. The <br />water quality became significantly higher in sulfates as we were asking the EPA to modify <br />our injection permit. Marathon objected to the permit. We had to go convince them that <br />there was no way that was impact from our operation. This was done and Marathon's <br />hydrologist said, "There's no way you guys could causing that influx —your talking miles <br />away. <br />Jerry Daub: <br />The other thing to note on this hydrostratigraphic column is that with White River Nahcolite <br />the dissolution surface is up in the L5 Zone, and there's another salt that we refer to as the <br />upper salt, which is the Boies Bed, that is both nahcolitic and halitic. That does not exist <br />over in this area. What's happening is, the depositional center of the basis is real close to this <br />area right here, and as you go out from this area, the subsurface erosion by percolating <br />groundwater has reduced that. In addition to the fact that when you go out from that center, <br />the beds are thinner and you go through a facies change from halitic or halite bearing to more <br />nahcolite bearing. <br />Paul von Guerard: <br />Is there a conclusion as to why the spring water changed? <br />Roger Day: <br />We chased it back and:got all the data of the stresses that are changing the waters. Near <br />surface waters are high in sulfates generally throughout the basin. Some springs are higher <br />than others. That's just characteristic of the shallow alluvial aquifers, probably only a year's <br />duration from the mean precipitation to coming out. It didn't tie in with the stuff we were <br />doing. But it was changing. Whether it was just a natural progression or a response to that <br />nuclear blast that was done up there, which increased the flow rates out of all springs in the <br />basin. It made a major change in the entire aquifer separation system. Mobil Oil also had <br />been producing and reinjecting and in their gas operation, which is above there. And so on. <br />There are now two major Exxon drill rigs here. The possibilities are limitless. Right before <br />the blast and right after the blast, that spring was sampled and it's in the USGS reports. Then <br />there was this long period of time... <br />END OF TAPE 1 SIDE B <br />(from notes): <br />Paul Daggett: <br />Are you going to take water quality measurements at the dissolution surface? <br />Jerry Daub: <br />We would like to take an initial water quality sample. After that we will just take water level <br />measurements. <br />Jim Komatinsky: <br />Is it really 70,000 ppm? <br />15 <br />