9VAC5-170-10. Use of terms

A. For the purpose of this chapter and subsequent amendments to it, of regulations of the board, or of orders issued by the department, the words or terms shall have the meanings given them in 9VAC5-170-20 . B. Unless specifically defined in the Virginia Air Pollution Control Law or in the regulations of the board, terms used shall have the meanings commonly ascribed to them by recognized authorities.