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<br />I <br /> <br />I <br /> <br />it is all black -- we find that the precipitators are very sensitive <br />to the product that goes into them. So we placed fabric cloth filters <br />on our station at Nucla. And it took us about two years to make those <br />things work properly. Once we redesigned and modified them and did a <br />lot of experimental work on them, we think that is the right way to go <br />to remove particulate matter, because you can barely go past Nucla <br />station and ever even see whether that station is on. You can't detect <br />anything coming out of the stack. <br /> <br />Now, the reason I bring that up is that we are a member of the Electric <br />Power Research Institute, and we asked them to come down and do a little <br />experimental work on removing sulphur from the stack gas effluent use <br />of nacolyte, Or some soda-ash compound, and they did run some very short <br />experiments there. The results were quite effective. The trouble that <br />we had was that we are not set up to do regular experimental work. At <br />the Arapahoe station of the Public Service Company in Denver, EPRI has <br />a regular test facility, and they will be doing some of this work. so <br />there is a possibility that rather than go to the wet limestone type <br />of a thing, that in the future we might be able to go to fabric cloth <br />filters, which are far more effective, in my mind, than electrostatic <br />precipitators for removing particulates. And if we coat those bags with <br />a SOda-ash material, we can also maybe meet the sulphur dioxide stan- <br />dards more economically than we can by running this chemical plant -- <br />and that is all a wet limestone scrubber is, and very corrosive, to do <br />that. <br /> <br />That is a thing that may be an offering in the future, and we are going <br />to continue to try to do that. <br /> <br />so, Felix, in the future we may be able to not use so much water. <br /> <br />MR. SPARKS: Good. <br /> <br />MR. BUGAS: We may find another way to do this. <br />technology is just not catching up to the rapid <br />regulations and the laws are being passed at. <br /> <br />Our problem is that the <br />pace that the rules and <br /> <br />MR. SPARKS: I hope that some way can be found to reduce the consumptive <br />use of water, because it is becoming rather frightening. The water <br />requirements for the energy industry are now more than double what our <br />studies showed some 15 years ago. We are rapidly approaching what <br />appears to be, with some oil shale industry, that the consumptive use will <br />be half a million acre-feet a year in Colorado. It has been of extreme <br />concern, I know, to the GOvernor. Whereas, 15.years ago we didn't think <br />it was such a great demand; we have had to constantly revise our figures <br />upward. <br /> <br />I recall some 15 years ago we were talking about less than about 10,000 <br />acre-feet per thousand megawatts. We were figuring at that time a <br />return flow to the stream, and now we have just doubled that fugure, <br />all based upon environmental considerations and no return to the stream, <br />which, obviously, doubles the consumptive use. <br /> <br />MR: BUGAS: Right. <br /> <br />-7- <br />