The alternatives section should present the environmental impacts of the proposed action and the alternatives in comparative form based on the information and analysis presented in the sections on the affected environment (§ 1502.15) and the environmental consequences (§ 1502.16). In this section, agencies shall:
(a) Evaluate reasonable alternatives to the proposed action, and, for alternatives that the agency eliminated from detailed study, briefly discuss the reasons for their elimination.
(b) Discuss each alternative considered in detail, including the proposed action, so that reviewers may evaluate their comparative merits.
(c) Include the no action alternative.
(d) Identify the agency's preferred alternative or alternatives, if one or more exists, in the draft statement and identify such alternative in the final statement unless another law prohibits the expression of such a preference.
(e) Include appropriate mitigation measures not already included in the proposed action or alternatives.
(f) Limit their consideration to a reasonable number of alternatives.