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(3) If the 6 -minute average opacity readings are less than or equal to half the <br />applicable opacity limit (all 6 -minute averages are less than or equal to 10.;), <br />then the observation period may be reduced from 1 hour to 30 minutes. <br />(4) A visible emissions observer may conduct visible emission observations for up to <br />three fugitive, stack, or vent emission points within a 15 -second interval if the <br />following conditions are met: No more than three emissions points may be <br />read concurrently. All three emissions points must be within a 70 degree <br />viewing sector or angle in front of the observer such that the proper sun <br />position can be maintained for all three points. If an opacity reading for any <br />one of the three emissions points is within 5 percent opacity from the <br />applicable standard (excluding readings of zero opacity), then the observer <br />must stop taking readings for the other two points and continue reading just <br />that single point. <br />C. Initial performance tests are required for the following point(s): AIRS ID point 211 at <br />the exhaust outlet for any control device. <br />d. Results of initial performance tests must be submitted to the APCD (Administrator or <br />delegated authority), consistent with the provisions of section 60.8. <br />e. After July 1, 2011, within 60 days after the date of completing each performance <br />evaluation conducted to demonstrate compliance with this subpart, the owner or <br />operator of the affected facility must submit the test data to EPA by successfully <br />entering the data electronically into EPA's WebFIRE data base available at <br />http://cfoub.epa.Qov/oarweb/index.cfm?action=fire.main. For performance tests that <br />cannot be entered into WebFIRE (i.e., Method 9 of appendix A-4 of this part opacity <br />performance tests) the owner or operator of the affected facility must mail a summary <br />copy to United States Environmental Protection Agency; Energy Strategies Group; 109 <br />TW Alexander DR; mail code: D243 01; RTP, NC 27711. A written copy must be <br />submitted to the Division. <br />In addition, the following requirements of Regulation No. 6, Part A, Subpart A, General <br />Provisions, apply. <br />At all times, including periods of start-up, shutdown, and malfunction, the facility and <br />control equipment must, to the extent practicable, be maintained and operated in a <br />manner consistent with good air pollution control practices for minimizing emissions. <br />Determination of whether or not acceptable operating and maintenance procedures are <br />being used will be based on information available to the Division, which may include, <br />but is not limited to, monitoring results, opacity observations, review of operating and <br />maintenance procedures, and inspection of the source. (Reference: Regulation No. 6, <br />Part A. General Provisions from 40 CFR 60.11 <br />g. No article, machine, equipment or process must be used to conceal an emission that <br />would otherwise constitute a violation of an applicable standard. Such concealment <br />includes, but is not limited to, the use of gaseous diluents to achieve compliance with <br />an opacity standard or with a standard that is based on the concentration of a pollutant <br />in the gases discharged to the atmosphere. (S 60.12) <br />h. Records of startups, shutdowns, and malfunctions must be maintained, as required <br />under S 60.7. <br />Compliance with opacity standards must be demonstrated according to 5 60.11. <br />®� <br />COLORADO <br />Air Pollution Control Division <br />Oewlwtent of P[t6Lc Health 6 Enwtxvnent <br />Page 5 of 26 <br />