If any license party proposes an alternative to a preliminary condition under Sec. 1.671(a)(1), the Forest Service must do the following within 60 days after the deadline for filing comments to FERC's NEPA document under 18 CFR 5.25(c):
(a) Analyze the alternative under Sec. 1.673; and
(b) File with FERC:
(1) Any condition that the Forest Service adopts as its modified condition; and
(2) Its analysis of the modified condition and any proposed alternatives under Sec. 1.673(c).