20120340 Ver 1_More Info Received_20120717

12'03`x'
2050 Northpoint Drive Suite A Winston Salem NC 27106
896 1300 phone [phone] fax www geotec com
TO
Sue Homewood
NCDENR Regional Office
Waughtown Street
Winston - Salem, NC
WE ARE SENDING YOU
X Attached
RECEIVFn
F'N C
U L P
Regwnai Office
Letter ®f Transmittal
Date 7/1112012
GeoSci Job # 11 277
Rorseman — Creekway Stream Stabilization
FROM John Butler
Under separate cover via
the following
COPIES
DESCRIPTION
3
REVISED Construction Drawings 3) —11 X 17
2
REVISED Construction drawings 2 24 X 36
THESE ARE TRANSMITTED AS CHECKED BELOW
L� For Approval Approved as Submitted
0 For Your Use
As Requested
For Review and Comment
For bids
Time Date
REMARKS
Approved as Noted
Revise and resubmit/for your use
Prints
Other
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►L 1 7 2012
DENR WATER 0i M 1 Y
'ailanan 8 n - -- -
Attached are revised construction drawings and PCN's for a stream stabilization prgj ect
Winston Salem NC Please contact me with questions or comments
Signed

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752—
PROPOSED CONTOURS @ 2- INTERVALS
-750—
PROPOSED CONTOURS @ 10' INTERVALS
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PROPOSED SPOT ELEVATION
EXISTING STREAM CENTERLINE
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PROPOSED CONTOURS @ IV INTERVALS
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EXISTING STREAM CENTERLINE
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SCALE: 1 "=300'
DRAWN BY: JAB

ROLLED EROSION iyi R,' INSTALLATION
TO BE USED IF NAG P550 RECP STREAM BANK REINFORCEMENT
OPTION IS UTILIZED.
14649 HIGHWAY 41 NORTH
EVANSVILLE, IN 47725
800-772-2040
www.nagreen.com
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ANCHOR FABRIC AT TOP
OF BANK PER DETAIL
-2'-5-
CM — 12.5 CM)
in
4' (
STAPLE PATTERN "E" INSTALLATI ❑N GUIDE
6.67' (2,03 M) WIDE ROLLS ONLY
IMPORTANT NOTE: SEE APPROPRIATE STAPLE
PATTERN GUIDE AVAILABLE FROM THE
MANUFACTURER iE ROLL WIDTH OTHER THAN
6:67' C2V3 MID IS USED,
0
-- 10" (0.25m)
3.3' (1.0m)
3.75
STAPLES
PER
SQ.
YD.
(4.5
STAPLES
PER
SQ.
M)
1. FOR EASiEF INSTALLATION, LOWER WATER FROM LEVEL A TO LEVEL B BEFORE INSTALLAT:.iON IF APPLICABLE.
2. PREPARE cOiL BEFORE INSTALLING ROLLED EROSION CONTROL PRODUCTS (RECP's), INCLUDING ANY NECESSARY APPLICATION OF LIME,
FERTILIZER, AND SEED.
NOTE: WHEN USING CELL —O —SEED, DO NOT SEED PREPARED AREA. CELL —O —SEED Mt. ST BE INSTALLED WITH PAPERSIDE DOWN.
3. BEGIN AT THE TOP OF THE STREAM BANK BY ANCHORING THE FABRIC IN A 6" (15 CM) DEEP X 6" (15 CM) WIDE TRENCH
WITH APPROXIMATELY 12" (30 CM) OF EXTENDED BEYOND THE UP —SLOPE PORTION OF THE TRENCH. ANCHOR
THE FABRIC WiTH A ROW OF STAPLES /STAKES APPROXIMATELY 12" (30 CM) APART IN THE BOTTOM OF THE TRENCH.
BACKFILL AA]D COMPACT THE TRENCH AFTER STAPLING. APPLY SEED TO COMPACTED SC1 L AND FOLD REMAINING 12" (30 CM)
PORTION 0- BACK OVER SEED AND COMPACTED SOIL. SECURE OVER COMPACTED SOIL WITH A ROW OF
STAPLES /STAKES SPACED APPROXIMATELY 12" (30 CM) APART ACROSS THE WIDTH OF T--IE ROLL.
4. ROLL RECF's EITHER (A.) DOWN THE SHORELINE FOR LONG BANKS, (TOP TO BOTTOM) CR (B.) HORIZONTALLY ACROSS
THE SHORELINE SLOPE. RECP's WILL UNROLL WITH APPROPRIATE SIDE AGAINST THE S& 'L SURFACE. ALL RECP's MUST
BE SECURELY FASTENED TO SOIL SURFACE BY PLACING STAPLES /STAKES IN APPROPRIATE LOCATIONS AS SHOWN IN THE STAPLE
PATTERN GJIDE. WHEN USING THE DOT SYSTEMT°, STAPLES /STAKES SHOULD BE PLACED THROUGH EACH OF THE COLORED DOTS
CORRESPONDING TO THE APPROPRIATE STAPLE PATTERN.
5. THE EDGES OF ALL HORIZONTAL AND VERTICAL SEAMS MUST BE STAPLED WITH APPROXMATELY 2" — 5" (5 CM — 12.5 CM)
OVERLAP.
* * * *iMPORT�,NT NOTE * * **
SEAM OVER _AP SHOULD BE SHINGLED ACCORDING TO PREDOMINANT EROSIVE ACTION.
6. THE EDGE OF THE FABRIC SHALL TERMINATE
BELOW NORMAL WATER LEVEL AND IT MUST
BE
ANCHORED BY PLACING THE FABRIC
IN A MINIMvM 12" (30 CM)
DEEP X 6" (15
CM) WIDE ANCHOR TRENCH. ANCHOR THE
FABRIC WITH A ROW OF STAPLES /STAKES
SPACED AFROXIMATELY 12"
(30 CM) APART
IN THE TRENCH. BACKFILL AND COMPACT
THE
TRENCH AFTER STAPLING (STONE OR
NATIVE S01_ MAY BE USED
AS BACKFILL.)
* ** *IMPORT, =INT NOTE ****
IN LOOSE SOIL CONDITIONS,
THE USE OF STAPLE OR STAKE LENGTHS GREATER THAN 6"
(15
CM) MAY BE NECESSARY
TO PROPEF_Y ANCHOR THE
RECP's. LONGER
STAKES MAY BE REQUIRED AT THE DISCREi ION
OF THE ENGINEER.
1. SCOPE
The work shall consist of furnishing and installing or planting live plant materials on streambanks and eroding slopes to stabilize the bank and control erosion.
2. MATERIALS
All materials furnished shall meet the following requirements unless otherwise specified In section 9 of this specification:
General - Plant materials shall be live, viable woody vegetation free of insects and diseases. The plants shall consist of the species which will root, such as Salbc species (willow), Comus species (dogwood),
alnus species (alder), or as specified on the drawings or In section 9 of this specification. The plant materials shall be from commercial sources or shall be harvested from existing local stands as specified in
section 9 of this specification.
Root systems and limbs shall be kept intact and undamaged. Pruning cuts or cuts for live unrooted cuttings shall be smooth as not to damage the remaining bark of the plant.
Live stakes shall be living, woody plant cuttings with side branches removed and the bark Intact. They shall be prepared from 112, Inch to 2 inch diameter stock and cut Into lengths that will reach sustainable soil
moisture when installed, generally 2 to 5 feet. The basal or butt ends shall be cleanly cut at an angle to facilitate easy insertion into the soil. The top shall be cut square or blunt. Pilot holes may be required
depending on soil conditions.
Dead Stout Stakes shall be cut to a minimum length of 24 inches from untreated 2 x 4 inch lumber. Each length shall be cut diagonally across the 4 inch face, to produce two dead stout stakes.
The diagonal cut shall begin and end 1/8 to 1/4 Inch from the edge of the piece so the finished stake has a 1/8 to 1/4 inch tip. Only sound lumber shall be used.
Vegetated Geogrids will consist of live plant materials or cuttings between wrapped soil lifts.
3. HARVESTING INDIGENOUS SPECIES
The plant materials shall be harvested from existing stands of living woody vegetation. The harvested plant materials shall be one of the following listed species and determined suitable by the engineer:
Comus amomum, Silky Dogwood
Cephalanthus occidentalis, Buttonbush
Physocarpus opulifolius, Ninebark
Salix sericea, Silky Willow
Sambucus canadensis, American Elderberry
Live cuttings shall be securely bundled at the collection site with branches and limbs kept intact and transported In enclosed or covered vehicles.
Cuttings shall be stored out of direct sunlight, In a cool shaded location, sprayed with water and covered with a wet tarp.
Cuttings should be Installed within 24 hours of harvest.
Live cuttings that cannot be Installed within 24 hours shall be placed in storage at 40 °F to 50 °F.
Cuttings shall be refrigerated, if the air temperature is above 50 °F.
rior to installation the cutting shall be placed (cut ends) in water for 24 hours to allow for uptake of water by the cutting.
4. PLANT MATERIALS FROM COMMERCIAL SOURCES
Plant material from commercial sources shall be harvested just before shipment to the site or harvested no earlier than two months before planting and put In refrigerated storage at 40 °F to
50 °F. When shipped, plants shall be transported in enclosed or covered vehicles and scheduled to arrive on site within 24 hours. The plants shall be bundled and packed to prevent damage to
the bark, limbs, or root systems. All bare root plants shall be treated with a root gel to prevent drying.
Plant materials should be planted the day they arrive on site. Plants that cannot be planted the day of arrival shall be stored onsite and protected from wind, direct sunlight, drying out or other
damage. Cuttings shall be stored to protect them from them from drying out by keeping them In a cool place and damp. CLMngs or uprooted stock not planted within two days after arrival on the
site shall be discarded unless refrigerated at 40 °F to 50 °F. Discarded materials shall be replaced from commercial sources at the Contractor's expense.
5. TIMING OF PREPARATION, INSTALLATION, AND PLANTING
All planting of woody vegetation shall be accomplished during the dormant season between October 1 and May 15.
Installation of plant materials should begin concurrently with the earth moving operations and should be completed no later than 10 days after the slope has been prepared. When the planting Is
delayed beyond 10 days, the slope shall be protected from erosion by mulching with straw at the rate of 2 tons per acre or installing erosion control blankets.
6. INSTALLATION
Live stakes shall be installed In the configuration, spacing, and areas shown on the drawings. The cuttings shall be tamped into the ground at right angles to the slope to a minimum depth of 18
inches for a firm hold. Where soils are soft and 24 inch stakes are not solid (i.e., If they can be moved by hand) 36 inch stakes shall be used. Where soils are so compacted or frozen that 24 inch
stakes cannot be tamped into the ground without splitting, pilot holes shall be drilled using an auger or reinforcing rod. Pilot holes shall be narrower in diameter than the live stakes.
Vegetated geogrids Incorporate brush layers with natural or synthetic geotextile materials wrapped around each soil lift. Starting at the bottom of the slope, the bank shall be excavated to a
depth of 2 feet. Live brush shall be placed horizontally, on the contour, in a crisscross manner. The brash shall be 5 feet in length and placed at the rate of 5 stems per linear foot.
7. PLANTING ROOTED STOCK
Bare Rooted Cuttings, Seedlings or Trees shall be dipped in a root gel just prior to planting. Holes for plants shall be made by a planting bar or shovel in the prepared slope. The holes shall be
of sufficient size to permit placing the plant without bending the root. Plants shall be placed In the holes to the same depth as they were originally growing.
Rooted cuttings or seedlings shall be planted on approximately 5 foot centers in rows or randomly along the contour of the slope. Rows shall be 5 feet apart and plants shall be staggered from row to
row. Random planting and use of multiple species will contribute to a more natural appearance.
Holes made with a shovel shall be filled with excavated soil and pressed firmly around the roots up to the ground surface. Finales made with a planting bar may be closed with the planting bar
firming the soil at the bottom of the hole first and then firming the soil at the top. All spaces within one foot of the plant shall be filled with soil and compacted assure not airspaces remain.
Any plant materials damaged during installation or determined to be unsuitable by the engineer shall be removed and replaced at the Contractor's expense.
BiO -D -BLOCK INSTALLATION NOTES:
1. Before installing BioD -Block coir block system, clean and level the base of the eroded
streambank. If necessary, strengthen the toe and the foundation using rocks as show in the
diagram (Fig. 1). Place at least 2 inches of soil on the top and level the surface well.
2. Place a BioD -Block unit on level surface, keeping the female end towards direction of
extending, and spread the bottom fabric. Anchor the bottom fabric to the ground well with
suitable length metal staples or wooden pegs. Fill soil up to the height of the coir block (Fig.
1) and compact the filled soil well. Cover the compacted filled material with top fabric and
anchor it well (Fig. 2).
3. If the water table is close to the top of the first soil layer, plant native plants on and
around BioD -Block (Fig. 3a). If the soil surface is at the water level, do not plant at this time.
Most of the woody plants including willows will not grow in submerged conditions.
4. Repeat the coir block installation procedure described above to make soil lift layers as
needed or to the top of the bank. On the very top layer, spread grass seeds.
5. Joining BioD -Block units can be done easily with their unique connection method. Male
and female end connection in BioD -Block maintains continuity and structural integrity of the
connected section. Fabric extending beyond fiber block at female end provides structural
support for inserted male end. insert male end of second BioD- BlockT" to female end of first
BloD- BiockT"I and drive stakes as shown in the picture. Make sure to drive stakes through
overlapping fabrics of two BioD- BlockTm units at their connection. Once again do not drive
stakes all the way. Keep adding BioD- BlockTm units until desired length is achieved.
6. We recommend using minimum 1 in x 1.5 in x 15 in pine wedges at every 3 ft to anchor
the bottom fabric to the ground before filling with soil and 2 in x 2 in x 24 in pine wedges on
the top fabric after filling with soil. These wedges may be substituted with 12 in or longer
metal staples if necessary. Additional anchors will increase the safety factor of the
constructed slope.
NA-VIRM
7/11/12-NOTES
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NOTE: ELAN
CONTRA:TOR SHALL FOLLOW CONSTRUCTION
SEQUEii"-.E AS NOTED ON CONTRACT DRAWINGS.
3*-0*
POLYETHYLENE MEMBRANE ON LEVEL WITH TOP OF BANK
FACE 20 MIL THICK rl —OR AS NECESSARY
Is to B�:
'N
is o
Z
SANb---.AGS, CLASS 1 RIP RAP
OR bNER NON-ERODIBLE
MATE:'AL
SYNTi-:TIC FILTER FABRIC—
CLASS 1 RIP RAP, NJ BARRIER
OR OTHER APPROVED MATERIAL
(IF USING RIP-RAP DOWNSTREAM,
SLOPE No GREATER THAN1.0 : 1)
SECTION A
CREEK CROSSING — COFFER DAM
4 R Y CFA R Daft/
N.T.S.
TEMPORARY COFFER DAM NOTES,
1. ALL WORK SHALL BE CONDUCTED DURING PERIODS OF DRY WEATHER IF POSSIBLE,
2. A PUMP OF ADEQUATE CAPACITY SHALL BE USED TO PUMP NON-SEDIMENT LADEN
0 WATER AROUND THE WORK AREA,
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Table 6.10a
Temporary Seeding
Recommendations for Late
Winter and Early Spring
6.141.4
Seeding mixture
Species Rate (Iblacre)
Rye (grain) 120
Annual lespecleza (Kobe in
Piedmont and Coastal Plain,
Korean In Mountains) so
Omit annual lespeclaza, when duration of temporary cover is not to
extend beyond June.
Seeding dates
Mountains--Above 2500 feet: Feb. 15 - May 15
Below 2600 feet Feb. I- May I
Piedmont—Jan. 1 - May I
Coastal Plain—Dec. I -Apr. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 Iblacre ground
agricultural limestone and 750 lb /acre 10-10-10 fertilizer.
Mulch
Apply 4,000 Iblacre straw. Anchor straw bytacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize If growth Is not fully adequate. Reseed, refartilize and mulch
immediately following erosion or other damage.
•
Table 6.14a
tautening materials anal Apps cation Kates
Material
Rate Per Acre
Quality
Notes
Organic Mulches
Straw
1.2 tons
Dry, unchopped,
Should come from wheat or oats;
unweathered; avoid
spread by hand or machine, must
weeds.
be tacked down.
Wood chips
5-6 tons
Air dry
Treat with 12 lbs nitrogeniton. Apply
with mulch blower, chip handler, or
by hand. Not for use In fine turf.
Wood fiber
0.5-1 tons
Also referred to as wood cellulose.
May be hydroseeded. Do not use In
hot, dry weather.
Bark
36 cubic yards
Air dry, shredded or
Apply with mulch blower, chip
hammer-milled, or chips.
handler, or by hand. Do not use
asphalt tack.
Com stalks
4-8 tons
Cut or shredded In 4-6
Apply with mulch blower or by hand.
in. lengths.
Not for use in fine turf.
Sedcea
1-3 tons
Green or dry; should
lespecleza
contain mature seed.
seed-bearing
stems
Nets and Mats'
Jute not
Cover area
Heavy, uniform; woven
Withstands waterflow, Best when
of single Jute yam.
used with organic mulch.
Fiberglass net
Cover area
Withstands waterflow. Best when
used with organic mulch.
Excelsior
Cover area
Withstands waterflow.
(wood fiber)
mat
Fiberglass roving
0.5-1 tons
Continuous fibers of
Apply with a compressed air ejector,
drawn glass bound
Tack with emulsified asphalt at a
together with a non -toxic
rate of 25-35 gai11.000 sq fl.
agent.
Chemical Stabilizers'
Aquatain follow Not beneficial to plant growth.
Aerospray manufacturer's
Curasol AK specifications
Petroset SB
Terta Tack
Crust 500
Genaqua 743
M-1145
'Refer to Practice No. 6.30, Gress Lined Channels.
2Use of trade names does not imply endorsement of product.
6.14.2
Table 6.10b
Temporary Seeding
Recommendations for
Summer
Practice Standards and Specifications
Seeding mixture
Species Rate (lb /acre}
German millet 40
In the Piedmont and Mountains, a small-stemmed Suclangrass may be
substituted at a rate of 50 lb/acre.
Seeding dates
Mountains--May 16 -Aug. 15
Piedmont—May 1 -Aug. IS
Coastal Plain --Apr. 15 -Aug, 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 Iblacre ground
agricultural limestone and 750 Iblacre 10-10-10 fertilizer.
Mulch
I
Apply 4,ODO, lb/acre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch
lmrnedlaiteil� following erosion or other damage.
----------
6.1015
Practice Standards and Sped,
Table 6.11111
Seeding No. I P for: Steep
Slopes or Poor Sol Is; Low
Maintenance
Seeding mixture
Species, Rate (lb/acre)
Tell fescue 100
Saricea Iespedeza 30
Kobe lespedoza 10
Seeding notes
1. In Eastern Piedmont, add 25 lb/acre Pensacola Bahlagrass or 10 lbt
acre common Bermudagrass. Use common Bermudagrass only where
It is unlikely to become a pest
2.A!terAug. 15, use unscarified sericea seed.
3. 'Mhere a neat appearance Is desired, omit serIcea and substitute 40
Iblacre Bahlagrass or 15 Iblacre Bermudagrass.
4. To extend spring seeding dates Into June, add 15 Iblacre hulled
Bernnuclagrass. However, It is preferable to seed temporary cover and
seed fescue In Sept.
Nurse plants
BeNfeen May I and Aug, 15, add 10 lb/acre German millet or 15 lb/
acre, Sudangrass. Prior to May 1 or after Aug. 16, add 40 lb/acre rye
Seeding dates
Best Possible
Fall:, Aug. 25 - Sept. 15 Aug. 20 - Oct. 25
Late Winter. Feb. 15 - Mar, 21 Feb. I -Apr. 15
Fall's best for tall fescue, and lespeciazas In late winter. OverseedIng
of Kobe lespedeza over fall-seeded fall fescue Is very effective. Use
unhuflad Bermudagrass seed in fall.
Soli amendments
AppFf lime and fertilizer according to soil tests or apply 4,000 Iblacre
grc�Und agricultural limestone and 1,000 lb/acre 10-10-10 fertilizer.
App'lly 4,000-5,000 lb/acre grain straw or equivalent cover of another
suitable mulching material. Anchor mulch by tacking with asphalt,
rovI.,ing, or netting. Netting is the preferred anchoring method on steep
staples.
Maintenance
Refeerflize In the second year unless growth is fully adequate. May be
maiied once or twice a year, but mowing is not necessary, Reseed,
fertr,ite, and mulch damaged areas Immediately.
'Re`:er to Appendix 8.02 for botanical names.
6.11.19
SEEDING NOTES:
1, NOTE: THE CONTRACTOR SHALL HAVE A REGISTERED LANDSCAPE PROFESSIONAL VERIFY !HAT THE SEEDING SPECIFICATION
GIVEN IS APPROPRIATE FOR SITE CONDITIONS AT THE TIME OF PLANTING, ADJUST THE SEEDING MIXTURE AS NECESSARY TO
ENSURE GROWTH OF GROUND COVER, ANY SEED MIX USED SHALL CONFORM WITH NCDENR SPECIFICATIONS,
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