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CHAPTERFOUR Responses to Public and Agency Comments <br />Letter and <br />Comment No. Response <br />or disposal of waste materials in the cavities. American Soda would be <br />required to amend its Commercial Mine Plan and Underground Injection <br />Control (IIIC) permit, as appropriate, for such disposal. <br />F-2.6 Since the Draft EIS was published, the proponent submitted a refined <br />regional haze analysis for the construction peraut application to the <br />Colorado Air Pollution Control Division (dated Mazch 1, 1999). This <br />report indicates that using the refined modeling features available in the <br />CALPUFF model for long-range transport results in substantially lower <br />predicted effects. The highest 24-hour extinction from both the Piceance <br />and Parachute facilities was calculated at the Flat Tops azea as a deciview <br />change of 0.126. <br />Based on the anticipated increase in emissions associated with the <br />Accelerated Development Alternative, there would be an increased effect <br />on regional haze. It is anticipated that the light extinction as deciview <br />change would double or triple as a result of this alternative. Even at triple <br />{0.378 deciview) the anticipated impact is below 0.5 deciview. <br />F-2,7 As stated on page 2-23 of the Draft EIS, the amount of petroleum products <br />stored on site during either construction or operation would be less than the <br />regulatory threshold limits for a Spill Prevention, Control and <br />Countermeasure (SPCC) Plan. Refer to Cornntent F-2.8 for spill prevention <br />measures for other potentially hazazdous materials used on site. <br />F-2.8 Spill prevention and control measures for activities at the Piceance and <br />Parachute sites aze being developed and aze included in the Preliminary <br />Response Plan prepared for the BLM, EPA, and other appropriate agencies. <br />(Refer to Section 2.3.6.2 for a description of the Plan). A spill plan for the <br />product pipeline and gathering pipelines is included as Attachment 7 in the <br />Pipeline Plan of Development (Appendix E). The Record of Decision <br />(ROD) will also have a condition of approval regulating hazazdous material <br />use, storage, and disposal. <br />F-2.9 The UIC Class I well for waste brine disposal will continue through the <br />construction phase of the Piceance Site. Once the commercial operations <br />begin, the disposal well would not opernte. <br />F-2.10 Refer to the Groundwater and Surface Water Monitoring Plan provided in <br />Appendix G. This plan presents an adequate monitoring well and surface <br />water sampling network. It also addresses sampling/analysisprntocols, and <br />it is based on discussions between the proponent, BLM, Colorado Division <br />of Minerals and Geology (CDMG), U.S. Geological Survey (L1SGS), Rio <br />Blanco County, and EPA before the plan was finalized. <br />4-5 <br />