Current through Register Vol. 54, No. 44, November 2, 2024
Section 139.103 - Opacity monitoring requirementsThis section applies to sources monitoring opacity.
(1) Opacity measurements shall be converted to represent plume opacity as described in the manual referenced in § 139.102(3) (relating to references). The conversion method shall be approved by the Department.(2) Opacity monitoring systems shall meet at least one of the following minimum data availability requirements unless other data availability requirements are stipulated elsewhere in this title for a particular process: (i) At least 90% of the hours in each calendar month shall be valid hours as set forth in the quality assurance section of the manual referenced in § 139.102(3).(ii) At least 95% of the hours in each calendar quarter shall be valid hours as set forth in the quality assurance section of the manual referenced in § 139.102(3).The provisions of this §139.103 adopted April 27, 1979, effective 8/1/1979, 9 Pa.B. 1447; corrected May 11, 1979, effective 8/1/1979, 9 Pa.B. 1534; amended June 19, 1981, effective 6/20/1981, 11 Pa.B. 2132; amended October 26, 1990, effective 10/27/1990, 20 Pa.B. 5416; amended November 25, 1994, effective 11/26/1994, 24 Pa.B. 5899.