§ 139.12. Emissions of particulate matter.

 Tests for determining emissions of particulate matter from stationary sources shall conform with the following:

   (1)  Test methods for particulate emissions shall include dry filters and provide for at least a 95% collection efficiency of particulate matter.

   (2)  Isokinetic sampling procedures shall be used in sampling for particulate matter emissions and the weight determined gravimetrically after the removal of uncombined water.

   (3)  Test methods and procedures shall be equivalent to those specified in §  139.4(5) (relating to references). The equipment shall be inert where appropriate and similar to that specified in §  139.4(1).

   (4)  The minimum sampling time shall be 1 hour or as specified in an applicable standard or by the Department and the minimum sample volume shall be 50 cubic feet or as specified in an applicable standard or by the Department, corrected to standard conditions (dry basis).

   (5)  Results shall be calculated based upon sample train component weights specified in §  139.4(5). Results shall be reported as pounds of particulate matter per hour and in accordance with the units specified in § §  123.11—123.13 (relating to particulate matter emissions).

   The provisions of this §  139.12 adopted March 3, 1972, effective March 20, 1972, 2 Pa.B. 383; amended June 22, 1979, effective July 1, 1979, 9 Pa.B. 2150; corrected June 29, 1979, effective July 1, 1979, 9 Pa.B. 2150; amended November 25, 1994, effective November 26, 1994, 24 Pa.B. 5899; amended December 26, 1997, effective December 27, 1997, 27 Pa.B. 6804; amended May 1, 1998, effective March 7, 1998, 28 Pa.B. 2035. Immediately preceding text appears at serial page (239781).

   This section cited in 25 Pa. Code §  123.45 (relating to alternative opacity limitations); and 25 Pa. Code §  139.17 (relating to general requirements).