Section 4.40 - Applicability(a)Applicability. The provisions of this subpart apply to any application for an initial license for a major unconstructed project that would have a total installed capacity of more than 10 megawatts, and any application for an initial or new license for a major modified project with a total installed capacity more than 10 megawatts. An applicant for license for any major unconstructed or major modified water power project that would have a total installed generating capacity of 10 megawatts or less must submit application under subpart G of this part (§§ 4.60 and 4.61 ).(b)Guidance from Commission staff. A prospective applicant for a license for a major unconstructed project or major modified project may seek advice from the Commission's Office of Energy Projects regarding the applicability of this subpart to its project [see§ 4.32(h) ], including the determinations whether any proposed repair, modification or reconstruction of an existing dam would result in a significant change in the normal maximum surface elevation of an existing impoundment, or whether any proposed change in existing project works or operation would result in a significant environmental impact.Order 184, 46 FR 55936, Nov. 13, 1981, as amended by Order 413, 50 FR 11683, Mar. 25, 1985; Order 499, 53 FR 27002, July 18, 1988; Order 2002, 68 FR 51119 , Aug. 25, 2003; Order 877, 86 FR 42714 , Aug. 5, 2021