; and (V) the sensitivity of the natural and historical resources that could be affected by the project. (iii) Modifications The Secretary may— (I) lengthen a schedule established under clause (i) for good cause; and (II) shorten a schedule only with concurrence of the affected participating and cooperating agencies and the project sponsor or joint lead agency, as applicable. (iv) Dissemination A copy of a schedule established under clause (i) shall be— (I) provided to each participating and cooperating agency and the project sponsor or joint lead agency, as applicable; and (II) made available to the public. (2) Comment deadlines The Federal lead agency shall establish the following deadlines for comment during the environmental review process for a project study: (A) Draft environmental impact statements For comments by Federal and State agencies and the public on a draft environmental impact statement, a period of not more than 60 days after publication in the Federal Register of notice of the date of public availability of the draft environmental impact statement, unless— (i) a different deadline is established by agreement of the Federal lead agency, the project sponsor or joint lead agency, as applicable, and all participating and cooperating agencies; or (ii) the deadline is extended by the Federal lead agency for good cause. (B) Other environmental review processes For all other comment periods established by the Federal lead agency for agency or public comments in the environmental review process, a period of not more than 30 days after the date on which the materials on which comment is requested are made available, unless— (i) a different deadline is established by agreement of the Federal lead agency, the project sponsor, or joint lead agency, as applicable, and all participating and cooperating agencies