176.415—Permit requirements for Division 1.5, ammonium nitrates, and certain ammonium nitrate fertilizers.

[Amdt. 176-30, 55 FR 52706, Dec. 21, 1990, as amended at 56 FR 66282, Dec. 20, 1991; Amdt. 176-35, 59 FR 49134, Sept. 26, 1994; 65 FR 58630, Sept. 29, 2000; 66 FR 45185, 45384, 45385, Aug. 28, 2001; 68 FR 45041, July 31, 2003; 74 FR 53189, Oct. 16, 2009]