25 Pa. Code § 287.10 – Coproduct determination transition.

(a) A coproduct determination made after January 13, 2001, shall be performed in accordance with this chapter.
(b) A person may continue to operate under a coproduct determination made prior to January 13, 2001, provided that the person maintains documentation that demonstrates continuing compliance with the coproduct determination.
(c) After January 13, 2003, a person shall only operate under a coproduct determination that meets the requirements of this chapter.

The provisions of this § 287.10 adopted January 12, 2001, effective January 13, 2001, 31 Pa.B. 235.