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• Sunday Mines Air Permit - CDPHE - 07SM1140 <br />Regulatory Agency: Colorado Department of Health and Environment, Air Pollution Control Division <br />("Division") <br />Date: June 20, 2008 <br />Renewal Date: November 6, 2012 <br />Permitted Source: Discharge into the atmosphere from underground uranium and vanadium mine <br />ventilation systems. <br />1) Commence constructions/modification or operation within 18 months after issuance of permit <br />(December 2009), or commences construction pursuant to permit application. <br />2) Within 180 days of commencement of operations, self certify compliance with conditions. <br />3) Visible emissions shall not exceed 20% opacity during normal operation of the source. <br />4) During periods of startup, process modification, or adjustment of control equipment visible emissions <br />shall not exceed 30% opacity for longer than six minutes in any sixty consecutive minutes. <br />5) Opacity shall be measured by EPA method 9 (Regulation No. 1, Section II.A.I & 4.) <br />"Section II.A.I - Smoke and Opacity. <br />The previous opacity regulations have made ?LnLexceedence of 20% opacity a violation. To <br />conform to the method of opacity measurement used by the U.S. Environmental Protection <br />Agency, the commission has switched to the 6-minute averaging method of measuring opacity <br />• contained in EPA Method 9 (40 CFR, Part 60, Appendix A (July, 1992)). The testimony <br />presented by division representatives indicated investigators in the field have in effect been <br />averaging opacity. The commission encourages the division to continue its practice of allowing <br />non-agency personnel to attend smoke school and receive certification." <br />"Section II.A.4 - Fire Building, Cleaning of Fire Boxes, Soot Blowing, Start-Up, Process <br />Malfunction or Adjustments of Control Equipment. <br />On the same rationale that the limited exception for pilot plants was amended (see comments on <br />II.A.3. above), the limited exceptions for these sources has also been changed from up to three <br />minutes in a 60-minute period at no more than 40% opacity to up to six minutes at 30% opacity <br />(averaged)." <br />EPA method 9 attached. <br />6) Emissions of Air pollutants shall not exceed the following limitations: <br />a) Particulate matter: 13.74 Tons per year <br />b) PM 10 (Particular matter <10pm): 13.74 Tons per year <br />7) A revised Air Pollutant Emission Notice (APEN) shall be filed (Regulation No. 3, Part A, Section <br />II.C.): <br />a) Annually whenever a significant increase in emissions occurs as follows: <br />i) For any criteria pollutant: <br />• (1) For sourced emitting less than 100 tons per year, a change of five tons per year or more, <br />above the level reported on the last APEN submitted.