No person may permit the emission to the outdoor atmosphere of particulate matter from any incinerator, at any time, in such a manner that the particulate matter concentration in the effluent gas exceeds 0.1 grain per dry standard cubic foot, corrected to 12% carbon dioxide.
25 Pa. Code § 123.12
This section cited in 25 Pa. Code § 121.8 (relating to compliance responsibilities); and 25 Pa. Code § 139.12 (relating to emissions of particulate matter).