Current through Register No. 13, March 27, 2025
In addition to the information required by Env-Wt 311, the
applicant shall submit the following for all stream crossing projects that
require a standard permit:
(a) On the
USGS map or updated data based on LiDAR required by Env-Wt 311.06, the
following:
(1) The approximate boundaries of
the contributing watershed;
(2) The
size of the contributing watershed; and
(3) Identification of the stream tier based
on watershed size;
(b)
Plans showing the following:
(1) The scale, a
north arrow, and at least 3 cross-sections outside of the construction
disturbance area that are representative of the stream system away from the
area of direct influence by the crossing;
(2) Clearing limits showing all proposed work
areas;
(3) For both the existing
structure, if any, and the proposed structure, the following:
d. Inlet and outlet invert
elevations;
(4) The
extent of channel excavation and filling;
(5) Road locations, including road edges,
centerline, and boundaries of the right-of-way;
(6) Proposed channel work including bank
erosion control features, grade control, and channel linings; and
(7) For the proposed structure,
cross-sections showing the water surface elevation resulting from the
applicable design storm, with bed material and backfill zones;
(c) Existing crossing metrics,
including:
(1) Existing riparian zone,
including the extent and type of existing vegetation surrounding or in the
stream bank; and
(2) Existing
tailwater control, including its location and materials, and pool
configuration;
(d) The
dewatering system, as follows:
(1) Estimates
of the maximum flow anticipated during construction, including any summer storm
estimates;
(2) The hydraulic
calculation for the bypass pipe or channel size, length, and
gradient;
(3) Location, height, and
width of the diversion dam;
(4)
Sump locations, including estimate of necessary flow and sump capacity;
(5) Backwater prevention method;
and
(6) Sediment treatment plan
with methods, release point, and extent;
(e) Erosion and pollution controls, as
follows:
(1) Any additional methods of
controlling erosion;
(2) A soil
stabilization plan, including but not limited to where to cover stockpiles and
place straw bales; and
(3)
Pollution control methods for pumps, fuel stations, and equipment
storage;
(f) The number
and location of footings, if any, and the following for each:
(1) Estimate of bearing capacity;
(2) Dimensions of each footing; and
(g) A narrative explaining why the
cross-sections identified pursuant to (b)(7), above, are
representative;
(h) The design
features used to improve aquatic organism passage and the expected distance, in
linear feet, of downstream and upstream improvement for aquatic organism
passage or fish passage;
(i) The
hydraulic capacity of the proposed crossing, in terms of flood frequency event,
and of the existing crossing, if any; and
(j) The following channel information at the
crossing and for the reference reach:
(1) The
classification of the stream using the Rosgen classification system as
described in Applied River Morphology by Dave Rosgen, 1996, available as noted
in Appendix B, at the crossing and upstream and downstream of the
crossing;
