The board rules shall govern all matters initiated after they take effect; and shall also govern all matters pending on the effective date, except to the extent that the board shall determine that application to a particular matter would not be feasible or would work a substantial injustice, in which event the procedure in effect prior to the effective date of these sections applies.

Source Note: The provisions of this §509.4 adopted to be effective September 15, 1980, 5 TexReg 3561.