; and (2) by adding at the end the following: 106 Procedures for determinations (a) Environmental impact statements (1) Request for public comment Each notice of intent to prepare an environmental impact statement under section 102 shall include a request for public comment on potential alternatives or impacts and on relevant information, studies, or analyses with respect to the proposed Federal action. (2) Sponsor preparation A lead agency may allow a project sponsor to prepare an environmental impact statement, if such agency provides such sponsor with appropriate guidance and assists in the preparation. The lead agency shall independently evaluate the environmental impact statement before adopting it, and shall take responsibility for the contents upon adoption. (3) Deadline Each environmental impact statement shall be completed not later than 2 years after the date of publication of the notice of intent to prepare such environmental impact statement is issued unless the lead agency approves a delay in writing and establishes a new timeline that provides only so much additional time as is necessary to complete such environmental impact statement. The lead agency may only approve such a delay if such delay is necessary to complete the environmental impact statement. (4) Statement of purpose and need Each environmental impact statement shall include a statement of purpose and need that briefly summarizes the underlying purpose and need for the proposed agency action. In a case where the agency is reviewing an application for authorization, such statement shall focus on the goals of the applicant and the agency’s authority. (5) Estimated total cost The cover sheet for each environmental impact statement shall include a statement of the estimated total cost of preparing such environmental impact statement, including the costs of agency full-time equivalent personnel hours, contractor costs, and other direct costs. (6) Word limit A statement of environmental impact may not exceed 75,000 words unless— (A) the