Section 3622.1 - Program: General(a) Persons may collect limited quantities of petrified wood for noncommercial purposes under terms and conditions consistent with the preservation of significant deposits as a public recreational resource.(b) The purchase of petrified wood for commercial purposes is provided for in § 3602.10 et seq. of this chapter.48 FR 27015, June 10, 1983, as amended at 66 FR 58909 , Nov. 23, 2001