20180542 Ver 2_DB00452 Reforest and Wetland SPs_20191121

DB00452 54 BEAUFORT
Install temporary silt fence around the perimeter of the enclosure in accordance with the details
and as directed if structure is not located in an area where existing erosion and sedimentation
control devices are capable to containing any loss of sediment.
Post a sign with the words "Concrete Washout" in close proximity of the concrete washout area,
so it is clearly visible to site personnel.
The construction details for the above grade and below grade concrete washout structures can be
found on the following web page link:
http://www.ncdot.gov/doh/operations/dp_chief eng/roadside/soil water/details/
Alternate details for accommodating concrete washout may be submitted for review and
approval.
The alternate details shall include the method used to retain and dispose of the concrete waste
water within the project limits and in accordance with the minimum setback requirements. (5 feet
above groundwater, 50 feet from top of bank of perennial stream, other surface water body, or
wetland.)
Maintenance and Removal
Maintain the concrete washout structure(s) to provide adequate holding capacity plus a minimum
freeboard of 12 inches. Remove and dispose of hardened concrete and return the structure to a
functional condition after reaching 75% capacity.
Inspect concrete washout structures for damage and maintain for effectiveness.
Remove the concrete washout structures and sign upon project completion. Grade the earth
material to match the existing contours and permanently seed and mulch area.
Measurement and Payment
Concrete Washout Structure will be paid for per each enclosure installed in accordance with the
details. If alternate details are approved then those details will also be paid for per each approved
and installed device.
Temporary Silt Fence will be measured and paid for in accordance with Article 1605-5 of the
Standard Specifications.
No measurement will be made for other items or for over excavation or stockpiling.
STREAMBANK REFORESTATION:
Description

DB00452 55 BEAUFORT
Streambank Reforestation will be planted in areas designated on the plans and as directed. See
the Streambank Reforestation Detail Sheets.
The entire Streambank Reforestation operation shall comply with the requirements of Section
1670 of the Standard Specifications.
Materials
Item Section
Coir Fiber Mat 1060-14
Live Stakes:
Type I Streambank Reforestation shall be live stakes, planted along both streambanks. Live
stakes shall be 1/2"- 2" in diameter. Stakes shall also be 2 ft. - 3 ft. in length.
Live staking plant material shall consist of a random mix made up of 50% Black Willow (Salix
nigra) and 50% Silky Dogwood (Cornus arnomurn). Other species may be substituted upon
approval of the Engineer. All plant material shall be harvested locally (within the same
physiographic ecoregion and plant hardiness zone) or purchased from a local nursery, with the
approval of the Engineer. All live stakes shall be dormant at time of acquisition and planting.
Staples, stakes, or reinforcement bars shall be used as anchors and shall meet the following
requirements:
Wooden Stakes:
Provide hardwood stakes 12"- 24" long with a 2" x 2" nominal square cross section. One
end of the stake must be sharpened or beveled to facilitate driving through the coir fiber
mat and down into the underlying soil. The other end of the stake needs to have a 1"- 2"
long head at the top with a 1"- 2" notch following to catch and secure the coir fiber mat.
Steel Reinforcement Bars:
Provide uncoated#10 steel reinforcement bars 24" nominal length. The bars shall have a
4" diameter bend at one end with a 4" straight section at the tip to catch and secure the
coir fiber mat.
Staples:
Provide staples made of 0.125" diameter new steel wire formed into a u shape not less
than 12" in length with a throat of 1" in width.
Bare Root Seedlings:
Type II Streambank Reforestation shall be bare root seedlings 12"-18" tall.

DB00452 56 BEAUFORT
Construction Methods
Coir fiber matting shall be installed on the streambanks where live staking is to be planted as
shown on the Streambank Reforestation Detail Sheets and in locations as directed. Work
includes providing all materials, excavating and backfilling, and placing and securing coir fiber
mat.
Provide a smooth soil surface free from stones, clods, or debris that will prevent the contact of
the matting with the soil. Place the matting immediately upon final grading and permanent
seeding. Take care to preserve the required line, grade, and cross section of the area covered.
Unroll the matting and apply without stretching such that it will lie smoothly but loosely on the
soil surface. Bury the top slope end of each piece of matting in a narrow trench at least 6" deep
and tamp firmly. Where one roll of matting ends and a second roll begins, overlap the end of the
upper roll over the buried end of the second roll so there is a 6" overlap. Construct check
trenches at least 12" deep every 50 ft. longitudinally along the edges of the matting, or as
directed. Fold over and bury matting to the full depth of the trench, close and tamp firmly.
Overlap matting at least 6" where 2 or more widths of matting are installed side by side.
Wooden stakes, reinforcement bars, or staples may be used as anchors in accordance with the
Streambank Reforestation Detail Sheets and as directed. Place anchors across the matting at
ends,junctions, and check trenches approximately 1 ft. apart. Place anchors down the center of
each strip of matting 3 ft. apart. Place anchors along all lapped edges 1 ft. apart. Refer to the
Streambank Reforestation Detail Sheets for anchoring pattern. The Engineer may require
adjustments in the trenching or anchoring requirements to fit individual site conditions.
During preparation of the live stakes, the basal ends shall be cleanly cut at an angle to facilitate
easy insertion into the soil, while the tops shall be cut square or blunt for tamping. All limbs
shall be removed from the sides of the live cutting prior to installation.
Live stakes shall be installed within 48 hours of cutting. Outside storage locations should be
continually shaded and protected from wind and direct sunlight. Live cut plant material shall
remain moist at all times before planting.
Stakes shall be spaced approximately 4 ft. on center. Live stakes shall be installed according to
the configuration presented on the Streambank Reforestation Detail Sheets.
Tamp live stakes perpendicularly into the finished bank slope with a dead blow hammer, with
buds oriented in an upward direction. Stakes should be tamped until approximately 3/4 of the
stake length is within the ground. The area around each live stake shall be compacted by foot
after the live stake has been installed.
1"- 2" shall be cut cleanly off of the top of each live stake with loppers at an angle of
approximately 15 degrees following installation. Any stakes that are split or damaged during
installation shall be removed and replaced.

DB00452 57 BEAUFORT
The bare root seedlings shall be planted as soon as practical following permanent Seeding and
Mulching. The seedlings shall be planted from top of bank out, along both sides of the stream, as
designated on the plans.
Root dip: The roots of reforestation seedlings shall be coated with a slurry of water, and either a
fine clay (kaolin) or a superabsorbent that is designated as a bare root dip. The type, mixture
ratio, method of application, and the time of application shall be submitted to the Engineer for
approval.
With the approval of the Engineer, seedlings may be coated before delivery to the job or at the
time of planting, but at no time shall the roots of the seedlings be allowed to dry out. The roots
shall be moistened immediately prior to planting.
Seasonal Limitations: Streambank reforestation shall be planted from November 15 through
March 15.
Measurement and Payment
Streambank Reforestation will be measured and paid for as the actual number of acres of land
measured along the surface of the ground, which has been acceptably planted in accordance with
this section.
Payment will be made under:
Pay Item Pay Unit
Streambank Reforestation Acre
WETLAND GRASS SEEDING:
Description
Wetland Grass Seeding will be planted in areas as directed.
Materials
Seed shall be provided by the Department to meet the following requirements at an application
rate of 25 pounds per acre:
Species Common Name Percent Pounds
Elymus riparius Riverbank wild rye 20 5
Panicum rigidulum Redtop Panicgrass 8 2
Panicum dichotomiflorum Smooth Panicgrass 14 3.5
Carex vulpinoidea Fox sedge 12 3
Panicum virgatum Switchgrass 23 5.75

DB00452 58 BEAUFORT
Dichanthelium clandestinum Deer tongue 8 2
Bidens aristosa Showy Tickseed Sunflower 7 1.75
Juncus effusus,NC Ecotype Soft rush 4 1
Polygonum pensylvanicum PA Smartweed 2 .5
Sparganium amricanum Eastern bur reed 2 .5
In addition, provide Creeping Red Fescue at a rate of 12 pounds per acre and German or
Browntop Millet at a rate of 25 pounds per acre.
Approved Creeping Red Fescue Cultivars:
Aberdeen Boreal Epic Cindy Lou
Construction Methods
The Contractor shall be responsible for taking sufficient soil samples for testing by the North
Carolina Department of Agriculture and Consumer Services, Agronomic Division, Soil
Testing Section, to determine the soil pH and nutrient content. Samples shall be taken in the
presence of the Engineer. Results shall be received by the Engineer directly from the North
Carolina Depaitiiient of Agriculture and Consumer Services. The Contractor shall be
responsible for the addition of fertilizer and/or other soil amendments as needed to ensure
livability of the wetland grass seeding.
Seed and mulch the area in accordance with Section 1660 of the Standard Specifications.
The Contractor shall supply and install a slow release, coated fertilizer (14-14-14) topdressing
at the rate of 500 pounds per acre prior to project acceptance as directed. Another fertilizer
analysis may be substituted,upon written approval of the Engineer.
Seasonal limitations: Wetland Grass Seeding shall be completed between April 15 and June 1.
No seeding shall be done when the temperature is below 32 degrees F or when the soil is
frozen.
Measurement and Payment
Wetland Grass Seeding will be measured and paid for as the actual number of acres of land,
measured along of the surface of ground, which has been acceptably planted with grasses in
accordance with these specifications. Such payment shall be full compensation for furnishing
and applying seed, fertilizer and or other soil amendments, mulch and fertilizer topdressing.
Payment will be made under:
Pay Item Pay Unit
Wetland Grass Seeding Acre