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The existing water rights would allow zoater for the project to be taken from the 1lnocal wells (alluvial) on Parachute Creek during much of the time. If a call is placed on Parachute Creek, water would be taken directly from the Colorado via the existing intake and pipe system. ' 7. Section 1.5, page 1-4 - What are the chemical formulas for soda ash, sodium bicarbonate, and nahcolite? See Section 3.2 (pages 3-14 and 3-15) and Section 7.2.1 (page 7-3). Soda Ash - NazCO3 Sodium Bicarbonate - NaHCO~ Nahcolite - NaHCO, 8. Section 1.5, page 1-4 - How will the product be kept in solution while being transported by pipeline? Control of the concentration and temperature of the fluid will yield a stable fluid for transport. 9. Section 2.1.1, page 2-2 -Need to determine if 43 CFR 3594.5 (c) applies to this project or not. The EIS should cleazly state this project complies with regulations and eliminate any language that implies that American Soda thinks the regulations should not apply to them--- especially when their explanations says cavity will only be 200 feet in diameter and they later state that there is a lot of uncertainty related to the fmal size of the cavities. They cannot state that there will be no impact to adjoining property. As the Mine Plan indicates, 43 CFR 3594.5 applies a 500 foot buffer unless the authorized official approves a different buffer. BLM originally indicated that we needed to include a justification for a different buffer in the Mine Plan. BLM has since indicated that this needs to be requested separately from the Mine Plan. American Soda will submit a separate request to use a smaller buffer. White River Nahcolite has a smaller buffer for their operations. We should check with Paul Daggett at BLM to see if this issue even needs to be addressed in the EIS. This may be an administrative item tltat reallu doesn't have anti implications for the EIS. The uncertainty related to cavity size is with respect to having smaller cavities. 200 feet is the maximum diameter, and it is uncertain that the cavities can grow to that size. American Soda's point here is that, because a solid is being mined rather than a solution deposit that extends off-lease, the rnaximum extent of mining is, in fact, the maximum extent of t{te cavity. Therefore, a smaller botmdary is appropriate. 10. Section 2.1.1:2, page 2-3 -Well field layout. The wells shown in Figure 2-1 aze supposed to be on the ridgetop. What slope criteria was used to define the ridgetop? Will some of the wells be on upper side slopes and require a lot or some cut and fill? Do the well acreages 4