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Colorado Department of Public Health and Environment <br />Air Pollution Control Division <br />Mountain Coal Company. LL.C - West Elk Mine Surface Facilities <br />Permit No 95GU508-2 <br />Final Approval - Modification-3 <br />CFR 60 11 <br />b No article, machine, equipment or process shall be used to conceal an emission <br />that would otherwise constitute a violation of an applicable standard Such <br />concealment includes, buts not limited to the use of gaseous diluents to achieve <br />compliance with an opacity standard or with a standard that is based on the <br />concentration of a pollutant in the gases discharged to the atmosphere. (§ 60.12) <br />C Written notification of construction and initial startup dates shall be submitted to <br />the Division as required under § 60.7. <br />d Records of startups. shutdowns and malfunctions shall be maintained, as <br />required under § 60 7 <br />e Compliance with opacity standards shall be demonstrated according to § 60.11. <br />11. A Revised Air Pollutant Emission Notice (APEN) shall be filed (Reference Regulation No. 3, Part <br />A. Section II C ) <br />a Annually whenever a significant increase in emissions occurs as follows. <br />For any criteria pollutant: <br />For sources emitting less than 100 tons per year, a change in actual emissions of five <br />tons per year or more, above the level reported on the last APEN submitted <br />b Whenever there is a change in the owner or operator of any facility process, or activity; or <br />c. Whenever new control equipment is installed, or whenever a different type of control equipment <br />replaces an existing type of control equipment, or <br />d Whenever a permit limitation must be modified, or <br />e No later than 30 days before the existing APEN expires APEN/s expires five (5) years from the <br />date;s of -ubn tai <br />a <br />rles ayay P L R K Hancock I, P E <br />A ?Ie <br />Permit Review Engineer Construction Permits Unit Supervisor <br />AIRS Point ID 051;00151012 Page 3 of 5