20181737 Ver 2_RESTORATION PLAN_20190730

RESTORATION PLAN
LINES 448 & 449 PROJECT
The proposed project has been designed to avoid and minimize jurisdictional impacts where practicable.
As part of the mitigation for unavoidable impacts, the following plan shall be implemented to restore
temporarily-affected wetlands, streambanks, and jurisdictional ditch banks. This plan describes the
restoration of temporarily-affected jurisdictional resources to be restored to their pre-disturbance contours
and site conditions to the degree practicable upon completion of project construction. No fill or dredged
material, or spoils of any kind, will remain in the jurisdictional resources following construction. No fill or
dredged material, or spoils of any kind, will be placed within stream or ditch channels during construction.
Disturbed areas within wetlands and along stream and ditch banks will be permanently stabilized with native
vegetative cover. The measures outlined below will be specified in the contract documents prepared for
construction of the proposed project.
Proposed restoration activities will include the removal of placed dredged (i.e., excavated topsoil and
subsoil) material and restoration to pre-construction contours. Excavated material shall be returned to the
trench to the extent possible, and remaining material relocated and retained on an upland site, if necessary.
Excavated topsoil will be stockpiled separately, kept viable, and then replaced uniformly over the area of
excavation from which is was removed. The native seed mix identified in Table 1 below will be utilized within
temporarily-disturbed portions of the construction limits that are comprised of wetlands; and Table 2
identifies the native seed mix to be utilized on temporarily-disturbed stream banks and jurisdictional ditch
banks.
The appropriate seed mix shall be applied to all disturbed wetlands, streambanks, and ditch banks and
extend a minimum of 10-feet landward into the adjacent upland areas. The recommended application rate
for each mix is 25 pounds per acre. In areas where streams and wetlands overlap, the wetland seed mix
shall be used exclusively. Appropriate native seed substitutions, or changes to seed percentages, for the
species identified in Tables 1 and 2 may be necessary due to seed availability. Appropriate substitutions
must be approved by the Project environmental inspector or Piedmont environmental manager.
Table 3 identifies appropriate species for cover/companion crops used along with native seed mixes to
provide early germination and increase cover of disturbed soils. The companion crops will aid the
establishment of native species and will typically be out-competed by native species when established. The
species identified in Table 3 are to be applied in addition to or augmented with the appropriate native seed
mix.
Table 1: Wetland Seed Mix
Species Name Common Name Percentage of
Mix
Panicum virgatum Switchgrass 23
Elymus riparius Riverbank wild rye 20
Panicum dichotomiflorum Smooth panicgrass 14
Carex vulpinoidea Fox sedge 12
Panicum rigidulum Redtop panicgrass 8
Dichanthelium clandestinum Deer tongue 8
Bidens aristosa Showy tickseed sunflower 7
Juncus effusus Soft rush 4
Polygonum pensylvanicum Smartweed 2
Sparganium amricanum Eastern bur reed 2
Total 100
Table 2: Stream Bank and Riparian Seed Mix
Species Name Common Name Percentage of
Mix
Elymus virginicus Virginia wild rye 20
Agrostis perennans Autumn bentgrass 15
Panicum virgatum Switchgrass 15
Andropogon gerardii Big bluestem 10
Coreopsis lanceolata Lanceleaf Coreopsis 10
Rudbeckia hirta Black-eyed Susan 10
Juncus effusus Soft rush 5
Schizachyrium scoparium Little bluestem 5
Sorghastrum nutans Indian grass 5
Tripsacum dactyloides Eastern gamma 5
Total 100
Table 3: Cover/Companion Crops
Species Name Common Name
Application
Season Application Rate Notes
Lolium perenne Perennial rye Early Fall or Spring 30 lbs/acre
Grows less than 2’, grows for less than 2
years, then typically dies out
Secale cereale Cereal or Winter rye Early Spring or Fall 30 lbs/acre Grows 3-4’ tall, not a strong competitor
Urocloa ramose Brown top millet Spring or Summer 30 lbs/acre
Good early germination, frost kill, does not
tolerate mowing, not a strong competitor