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L, M. ALEXANDER It is our intent to monitor in the most representative way to assure that minimum concentrations of concern which are now present remain low after plant start-up. Ultimately we plan to sample the air quality at several of the historic sites to provide assurance that our contentions are correct. 2, Noise Abatement Normally a plant of this kind is not relatively nejisy, But in the clear dry nighttime air in the Page area, noise may traveL We will instruct the engine~r'constructor to incorporate noise suppression in his plans for the plant. We have been assured that this can be done, without undue cost, 3. Water Quality The temperature and quality of the water to be ret;urned to Lake Powell is another consideration, plans call for installation of cooling towers to reduce the temperature of water used at the facility, An ecologist is beginning a study of data on stream flows, temperatures, stratification, and depths to evaluate the best way and location to make the return flow. There is some thought that the maximum 900 return temperature permitted to us under the water service contract will actually be beneficial to fish and wildlife. You may be sure we are fully conscious of th~ need to be sure that the effects of thermal pollution are minimized, Our task is made much easier by the minimal amount of water that will be returned-a maximum of 5900 A,F. per year in a lake' that has a present capacity of 11 million AF, and a maximum capacity of 29 million A,F, The remaining concern for water quality involves the quantity of solids contained in the water which will be returned to the lake. We alreadY know th~t in comparison, the tons per year of dissolved solids removed from the lake will be greater than the tons per year of dissolved solids returned, Studies are being made on this subject too, so that we ican practically eliminate any adverse ecological effects. ' 4. Dust Abatement Improper handling of coal and ash can cause an undesirable local dust problem at the plant, We will attack this proHem in several ways: (a) cover and house all coal dumping and conveyqr and silo storage operations, (b) provide means for dust collecting from cQvere:d apd housed areas. (c) add 'vater to ~sh to stabilize it for transpo~tat\on to the ash disposal area some two miles northeast of the plant, I (d) cover ash with backfill at the disposal area to preyent blow away, (e) maintain adequate housekeeping at all times, 5. Aesthetic Consideration Slide 24 Power plants do not have to be ugly neighbors: These slides show current construction on a nuclear and thermal plant which have both been enYirdnmentalized. We expect to do as much at -28-