; and (ii) (I) was not accepted by the lead agency under subparagraph (A) for detailed evaluation in an environmental impact statement or environmental assessment; or (II) (aa) was evaluated by the lead agency; and (bb) was not selected for any environmental impact statement or environmental assessment for the project. (C) Only feasible alternatives evaluated In the case of a project that is constructed, managed, funded, or carried out by a project sponsor that is not a Federal agency, the head of a Federal agency shall only evaluate an alternative that, consistent with the purpose of, and the need for, the project— (i) the project sponsor may feasibly carry out; and (ii) is technically and economically feasible, as determined by the head of the Federal agency. (3) Methodologies (A) In general With respect to an alternative for a project, the lead agency shall, in collaboration with cooperating agencies at an appropriate time during the environmental review for the project, determine the methodologies to be used in, and the level of detail required for, the review. (B) Description required The lead agency shall include in the environmental impact statement or environmental assessment for a project a description of— (i) the methodologies used in preparing the environmental impact statement or environmental assessment; and (ii) the means by which the methodologies were selected. (C) No evaluation of inappropriate alternatives In preparing an environmental impact statement or environmental assessment, a lead agency may omit from the environmental document a detailed evaluation of an alternative determined by the lead agency not to meet the purpose of, and need for, the project. (4) Employment analysis The evaluation of each alternative in an environmental impact statement or environmental assessment shall identify the potential effects of the alternative on employment, including— (A) potential short-term and long-term employment increases and reductions