Section R. 323.1312 - Applicability of rulesRule 312. These rules do not apply to any of the following:
(a) A watershed that has a drainage area of less than 2 square miles when measured at the downstream limits of the proposed project.(b) An improvement proposed under Act No. 40 of the Public Acts of 1956, as amended, being §280.1 et seq. of the Michigan Compiled Laws.(c) A flood control project designed by the United States army corps of engineers.(d) A flood control project designed by the United States soil conservation service.(e) Bridge or culvert replacements, upon certification, by the owner or by the owner's engineering consultant, that the replacement is designed with an equal or greater hydraulic capacity, that the existing bridge or culvert and its approaches do not cause harmful interference, and that deletion of existing auxiliary openings and road overflow areas is not planned.(f) New bridges or culverts, upon certification, by the owner or by the owner's engineering consultant, that the bridge or culvert is designed to pass the 100-year flood without causing harmful interference. Preliminary bridge or culvert plans, hydraulic waterway design calculations and construction methods, and procedures covering protection of natural resources shall be furnished with the certification to the department.(g) The extension of an existing bridge or culvert where the total extended length is not more than 24 feet.(h) A deck replacement of an existing bridge or resurfacing over an existing culvert.(i) A roadway resurfacing project where the road grade or shoulders will be increased only by the addition of a new wearing course.(j) Utility crossings of a floodplain where the floodplain will be restored essentially to existing elevations.(k) Noncommercial piers, docks, spring piles, pile clusters, and stream bank restorations, including seawalls, bulkheads, and other permanent revetment structures, that are classified as minor projects under R 281.816 (1) (a), (b), and (c).(l) Excavating or dredging activities where dredged materials are placed in an upland area that is out of the floodplain.(m) Boat ramps that conform to existing streambank contours.Mich. Admin. Code R. 323.1312