HomeMy WebLinkAbout20190323 Ver 1_Design/Maps/Site Plans_20190312WESTERN NORTH CAROLINA STREAM INITIATIVE
BRUSHY FORK - NORTH FORK NEW RIVER
GENERAL NOTES:
1. STREAM ASSESSMENT DATA (LONGITUDINAL PROFILE,
CROSS-SECTIONS, ETC.) PRESENTED HEREIN COLLECTED BY
BFEC/BFED.
2. CONTOUR DATA PRESENTED IN THIS DOCUMENT IS TAKEN FROM
NCDOT LIDAR DATA (2' and 10' CONTOURS).
3. HORIZONTAL AND VERTICAL GRID CONTROL TIED TO PROJECT BY
RICK SNYDER PLS# L-4418.
STREAM RESTORATION
SHEET INDEX
COVER
1
SITE PLAN (Overall)
2
SITE PLAN (NFNR STA 0+00-13+68)
3
SITE PLAN (NFNR STA 13+68-23+42, Brushy Fork)
4
NFNR LONGITUDINAL PROFILE AND CROSS-SECTIONS
5
NFNR CROSS-SECTIONS
6
NFNR CROSS-SECTIONS
7
BRUSHY FORK LONGITUDINAL PROFILE
8
AND CROSS-SECTIONS
BRUSHY FORK CROSS-SECTIONS
9
TYPICAL CROSS-SECTIONS
10
BRUSHY FORK SUMMARY TABLES
11
NORTH FORK NEW RIVER SUMMARY TABLES
12
CONSTRUCTION DETAILS
13-18
EROSION & SEDIMENT CONTROL DETAILS
E1
� Approximate Quantities �
Item
Quantity
I Unit
Live Stake
18900 SF
Planting: Container Tree &Shrub
65340 SF
J -Hook
15 EA
Cross Vane
10 EA
Bank Sloping and Stabilization
3147 LF
Toe Wood
500 LF
EROSION AND SEDIMENT CONTROL NOTES:
1. ONCE SITE CONSTRUCTION WITHIN AN AREA HAS CEASED ALL
DISTURBED AREAS WILL BE IMMEDIATELY SEEDED (TEMPORARY &
PERMANENT SEED), MATTED (COIR AND COCONUT FIBER EROSION
CONTROL BLANKET, NAG C70013N), AND STABILIZED (SEE SHEET 13).
2. LIVE STAKES AND BIODEGRADABLE MATTING STAKES WILL BE USED
TO SECURE THE MATTING.
3. BROADCAST SEEDING RATES WILL BE AS SPECIFIED ON SHEET 13.
4. NATIVE SHRUB AND TREE SPECIES WILL BE PLANTED THROUGHOUT
THE PROJECT AREA AT A RATE OF 400+ STEMS/ACRE, SECURING
NEAR BANK AREAS AND PROVIDING FUTURE SHADING OF CHANNEL
(SEE CHANNEL REVEGETATION DETAIL SHEET 13).
5. PRECAUTIONS WILL BE TAKEN TO KEEP HEAVY EQUIPMENT OUT OF
THE STREAM CHANNEL EXCEPT WHERE ABSOLUTELY NECESSARY TO
INSTALL BANK STABILIZATION/ENHANCEMENT MEASURES AND
IN -STREAM STRUCTURES.
N
`s
Project Site
Elevation
High :5183
Low : 2157 `C� !■F
North Carolina
Project Location Map
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Avg: 31.0/ Range: 29.0-32.8
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Avg: 16.9 /Range: 13.6-20.3
Avg: 20.5 /Range: 20.0-21.0
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Avg: 1.8 /Range: 1.5-2.2
Avg: 1.5 /Range: 1.4-1.6
1.5
Avg: 35.0/ Range: 14.2-80.3
Avg: 23.8/ Range: 6.0-59.5
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Avg: 2.4 / Range: 2.3-2.7
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Avg: 3.0/ Range: 0.5-7.1
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Avg: 9.4/ Range: 6.2-13.3
Avg: 13.6/ Range: 12.4-15.2
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Avg: 64.0
Avg: 64.0
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Avg: 1.5 /Range: 1.3-1.7
Avg: 1.6/ Range: 1.5-1.8
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Avg: 1.0/ Range: 0.9-1.1
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Avg: 17.2 /Range: 10.7-39.8
Avg: 37.9 /Range: 26.5-81.5
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Avg: 1.5 /Range: 1.2-1.7
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RESOURCE
INSTITUTE
m
4 N RCS
Sheet
60% PROGRESS DRAWINGS TOTHEBESTOFMYKNOWLEDGE,JUDGMENT,
AND BELIEF THESE PLANS MEET APPLICABLE
DO NOT USE FOR CONSTRUCTION NRCS STANDARDS AND LOCAL AND STATE
11 18
REGULATIONS.
1.6-1.9
1.9
Pool Max Depth
Avg: 3.1 / Range: 2.9-3.4
Avg: 3.2 / Range: 3.0-3.3
3.0
Pool Length (ft)
Avg: 35.0/ Range: 14.2-80.3
Avg: 23.8/ Range: 6.0-59.5
Pool Length Ratio
Avg: 2.1 / Range: 0.8-4.7
Avg: 1.2 / Range: 0.3-2.9
Pool to Pool Spacing
(ft)
Avg: 95.5 / Range: 44.5-182.9
Avg: 62.1 /Range: 11.0-146.0
P -P Spacing Ratio
Avg: 5.6/ Range: 2.6-10.8
Avg: 3.0/ Range: 0.5-7.1
D50 (mm)
Avg: 9.4
Avg: 9.4
D84 (mm)
Avg: 64.0
Avg: 64.0
o o
North Fork New River- Upstream Confluence
North Fork New River- Downstream Confluence
3
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Stream Assessment
Parameters
Existing Condition
Proposed Conditions
Typical Cross
Section
Stream Assessment
parameters
Existing Condition
Proposed Condition
Typical Cross
Section
Stream Type
C4
C4
C4
Stream Type
C4
C4
C4
Drainage Area (sq mi)
17.1
17.1
Drainage Area (sq mi)
22.5
22.5
Reach Slope (ft/ftj
0.0055
0.0057
Reach Slope (ft/ft)
0.0059
0.0064
Bankfull Area (sq ft)
Avg: 116.5 /Range: 103.6-129.3
Avg: 135.9/ Range: 135.4-136.4
136.5
Bankfull Area (sq ft)
Avg: 137.2
Avg: 151.9
145.9
Bankfull Width (ft)
Avg: 39.6/ Range: 32.0-47.2
Avg: 48.0/ Range: 0.0-0.0
48.0
Bankfull Width (ft)
Avg: 36.1
Avg: 49.8
49.8
Bankfull Depth (ftj
Avg: 2.9/ Range: 2.7-3.2
Avg: 2.8/ Range: 2.8-2.8
2.8
Bankfull Depth (ft)
Avg: 3.8
Avg: 3.1
2.9
Bankfull Max Depth
Avg: 4.3 / Range: 3.9-4.7
Avg: 3.8 / Range: 3.7-3.9
3.7
Bankfull Max Depth
Avg: 4.8
Avg: 3.8
3.8
LZ
w
4.
P�g
Bankfull Width /
Depth Ratio
Avg: 13.5/ Range: 9.9-17.2
Avg: 17.0/ Range: 16.9-17.0
16.9
Bankfull Width /
Depth Ratlo
Avg: 9.5
Avg: 16.3
17
Bankfull Max Depth
Ratio
Avg: 1.5 /Range: 1.3-1.6
Avg: 1.3 / Range: 1.3-1.4
Bankfull Max Depth
Ratio
Avg: 1.3
Avg: 1.2
Bank Height Ratio
Avg: 1.0/ Range: 0.9-1.1
Avg: 1.0/Range: 1.0-1.0
Bank Height Ratio
Avg: 1.1
Avg: 1.0
Entrenchment Ratio
>5
>5
Entrenchment Ratio
>5
>5
Riffle Length (ft)
Avg: 27.4/ Range: 21.6-36.7
Avg: 78.0/ Range: 55.0-97.0
Riffle Length (ft)
Avg: 31.2/ Range: 11.7-59.0
Avg: 69.8/ Range: 32.7-92.0
Riffle Length Ratio
Avg: 0.8 / Range: 0.6-1.0
Avg: 1.6 / Range: 1.1-1.9
Riffle Length Ratio
Avg: 0.8 / Range: 0.3-1.5
Avg: 1.5 / Range: 0.7-1.9
Riffle Slope (ft/ft)
Avg: 0.0088/ Range: 0.0044-
0.0130
Avg: 0.0065/ Range: 0.0061-
0.0073
RiffleSlope (ft/ft)
Avg: 0.0120/ Range: 0.0046-
0.0270
Avg: 0.0082/ Range: 0.0061-
0.0120
Riffle Slope Ratio
Avg: 2.2/ Range: 0.8-4.9
Avg: 1.4/Range: 1.1-2.1
Riffle Slope Ratio
Avg: 1.5/ Range: 0.7-2.2
Avg: 1.0/ Range: 1.0-1.1
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Pool Area
Avg: 121.6/ Range: 117.9-124.1
Avg: 153.0/ Range: 149.2-155.6
152.6
Pool Area
173.9
Pool Bkf Width
49.8
Pool Bkf Width
Avg: 36.0/ Range: 35.4-36.6
Avg: 49.0/ Range:48.0-52.1
48.0
pool Bkf Depth
3.5
c
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Pool Bkf Depth
Avg: 3.1 / Range: 2.6-3.4
Avg: 3.1 /Range: Z.9 -3.Z
3.2
pool Max Depth
5.0
Pool Max Depth
Avg: 4.4/ Range: 4.3-4.6
Avg: 4.8/ Range: 4.5-5.1
4.8
Pool Length (ft)
Avg: 32.7/ Range: 21.3-39.5
Avg: 43.0/ Range: 18.0-59.0
Pool Length (ft)
Avg: 45.8/ Range: 19.6-89.0
Avg: 59.4/ Range: 18.0-95.0
0.5-3.3
pool Len th Ratio
g
Av 0.9 Ran e: 0.6-1.1
g: / g
Av 0.9 Ran e: 0.4-1.2
g: / g
Pool Length Ratio
Avg: 1.2/ Range: 0.5-Z.Z
Avg: 1.Z/ Range: 0.4-2.0
Avg: 20.0
Pool to Pool Spacing
(ft)
Avg: 132.5/ Range: 63.1-192.4
Avg: 101.7/ Range: 23.0-164.0
Avg: 28.0
Pool to Pool Spacing
(ft)
Avg: 124.3/ Range: 51.6-258.6
Avg: 123.6/ Range: 23.0-220.0
Avg: 66.0
P -P Spacing Ratio
Avg: 3.7 /Range: 1.7-5.3
Avg: 2.0/ Range:
Avg: 72.0
P -P Spacing Ratio
Avg: 3.1/Range: 1.3-6.5
Avg: 2.6/ Range: 0.5-4.6
RESOURCE No
INSTITUTE
4 N RCS
TO THE BEST OF MY KNOWLEDGE,JUDGMENT,
AND BELIEF THESE PLANS MEET APPLICABLE
NRCS STANDARDS AND LOCAL AND STATE
REGULATIONS.
J L
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Sheet
12 18
60%PROGRESS DRAWINGS
DO NOT USE FOR CONSTRUCTION
0.5-3.3
D50 (mm)
Avg: 20.0
Avg: 20.0
D50 (mm)
Avg: 28.0
Avg: 28.0
D84 (mm)
Avg: 66.0
Avg: 66.0
D84 (mm)
Avg: 72.0
Avg: 72.0
TYPICAL CHANNEL RE -VEGETATION PLAN VIEW DETAIL
PLAN VIEW
SYMBOL
DESCRIPTION
SYMBOL
DESCRIPTION
NATIVE SOD MATTING AND/OR EROSION CONTROL FABRIC ARE TO BE
NATIVE TREE AND SHRUB
PLACED ON NEAR BANK AND DISTURBED AREAS WHEN AVAILABLE.
4..
(BAREFOOT OR I-3 GALLON
III III
\ — 6��
CONTAINERS) SPECIES TO BE
1. SEED IMMEDIATELY WITH TEMPORARY RYEGRASS.
2. FOLLOWING CONSTRUCTION, AREA TO BE SEEDED WITH A
PERMANENT GRASS/HERB MIXTURE. MATTING AND FABRIC ARE TO
4"
PL ANTED AT A DENSITY SUFFICIENT
TO PROVIDE 400 TREES/ACRE AT
MATURITY -FLOODPLAIN SPECIES
6"
A
BE STAKED DOWN WITH LARGE STAPLES AND/OR NATIVE/WOODY
STAKES.
B
INCLUDE BUT ARE NOT LIMITED TO:
Acer rubrum, Amelanchier
3. LIVESTAKE SPECIES INCLUDE BUT ARE NOT LIMITED TO:
1
arbores, Betula nigra, Ilex spp.,
luglands nigra, Liriodendron
Comus amomum, Physocarpus opulifolius, Salix serecia, Sambucus
tullpifem, Malus coronaria,
canadensis.
�^
Phys—pus opulifolius, Quercus
��
rubra, etc.
COMBINATION OF
CONTAINER OR BARE ROOT
NATIVE TREES 81OR SHRUBS
(SEE PLAN VIEW DETAIL FOR
1. PREPARE SOIL BEFORE INSTALLING BLANKETS, INCLUDING ANY NECESSARY APPLICATION OF LIME, FERTILIZER, AND SEED.
2. BEGIN AT THE TOP OF THE SLOPE BY ANCHORING THE BLANKET IN A 6" (15 CM) DEEP X 6" (15 CM) WIDE TRENCH WITH APPROXIMATELY 12"
(30CM) OF BLANKET EXTENDED BEYOND THE UP-SLOPE PORTION OF THE TRENCH. ANCHOR THE BLANKET WITH A ROW OF STAPLES/STAKES
APPROXIMATELY 12" (30 CM) APART IN THE BOTTOM OF THE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. APPLY SEED TO
COMPACTED SOIL AND FOLD REMAINING 12" (30 CM) PORTION OF BLANKET BACK OVER SEED AND COMPACTED SOIL. SECURE BLANKET OVER
COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED APPROXIMATELY 12" (30 CM) APART ACROSS THE WIDTH OF THE BLANKET.
3. ROLL THE BLANKETS IN DIRECTION OF WATER FLOW. BLANKETS WILL UNROLL WITH APPROPRIATE SIDE AGAINST THE SOIL SURFACE. ALL
BLANKETS MUST BE SECURELY FASTENED TO SOIL SURFACE BY PLACING STAPLES/STAKES IN APPROPRIATE LOCATIONS AS SHOWN IN THE STAPLE
PATTERN GUIDE. WHEN USING THE DOT SYSTEM, STAPLES/STAKES SHOULD BE PLACED THROUGH EACH OF THE COLORED DOTS CORRESPONDING
TO THE APPROPRIATE STAPLE PATTERN.
4. THE EDGES OF PARALLEL BLANKETS MUST BE STAPLED WITH APPROXIMATELY 2" - S" (5 CM - 12.5 CM) OVERLAP DEPENDING ON BLANKET TYPE. 5.
CONSECUTIVE BLANKETS SPLICED DOWN THE SLOPE MUST BE PLACED END OVER END (SHINGLE STYLE) WITH AN APPROXIMATE 3" (7.5 CM)
OVERLAP. STAPLE THROUGH OVERLAPPED AREA, APPROXIMATELY 12" (30 CM) APART ACROSS ENTIRE BLANKET WIDTH.
5. PLACE CONSECUTIVE BLANKETS END -OVER -END (SHINGLE STYLE) WITH A 4"-6" OVERLAP. USE A DOUBLE ROW OF STAPLES STAGGERED 4" APART AND
4" ON CENTER TO SECURE BLANKETS .
6 FULL LENGTH EDGE OF BLANKETS AT TOP OF SIDE SLOPES MUST BE ANCHORED WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12"(30CM)
APART INA 6"(15CM) DEEP X 6"(15CM) WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING.
7. ADJACENT BLANKETS MUST BE OVERLAPPED APPROXIMATELY 2"-5" (5-12.5CM) (DEPENDING ON BLANKETS TYPE) AND STAPLED.
SPECIES)
CROSS-SECTION
INSPECTION AND MAINTENANCE:
This consists primarily of two components, stream stabilization
structures (J -Hooks, Cross vanes, etc.) and planting of the stream
banks and riparian areas. In the event that the stream structures
shift, wash away, settle, or otherwise physically cannot function as
designed, contact the area NRCS Agent. If the new plantings
experience a mortality rate of greater than 25%, the dead/dying
plants will need to be replaced.
PERMANENT SEED MIX:
APPLY AT 15 LBS PER ACRE OF DISTURBANCE (per specifications of
seed supplier):
ERNST CONSERVATION SEED MIX ERNMX-178 (FLOODPLAIN MIX)
WHICH INCLUDES THE FOLLOWING SPECIES:
Fox Sedge, Partridge Pea, Dear Tongue, Little Bluestem, Virginia Wild
Rye, Riverbank Wild Rye, Swamp Sunflower, Ox Eye Sunflower, Arrow
Wood, Big Bluestem, Silky Dogwood, Switchgrass, Indiangrass,
Staghorn Sumac, Showy Tick Trefoil, Purple Bergamot, Black Eyed
Susan, Joe Pye Weed , Soft Rush, Giant Ironweed, Tall White Beard
Tongue, Spotted Joe Pye Weed, Bone Set, and Blue False Indigo.
TEMPORARY SEED MIX AND SPECIFICATIONS:
Common Name Scientific Name Rate per Acre Optimal
Planting Dates
Rye grain Secale cereale 30 lbs Aug 15
-May 15
Browntop millet Urochloa ramosa 10 lbs May 15
- Aug 15
Seedbed Preparation:
Disturbed soils within riparian areas will be amended to provide an
optimum environment for seed germination and seedling growth.
Surface soils will be loose enough for water infiltration and root
penetration. Lime will be added to the soil to ensure a pH level
between 5.5 - 7. Fertilizer (18-46-0) will be added to nutrient deficient
areas. All riparian areas will be raked to loosen compacted soil prior to
seeding.
TYPICAL BEDFORM GRADING DETAIL
RUN I POOL
\
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POOL G�lo / RUN POOL I
F4OW 1 PLAN VIEW
WATER
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13/18
EROSION CONTROL MATTING
12"
4..
6°IIIIIIII II
III III
\ — 6��
1111 II—III—
_ III=
4"
6"
A
2"-S"
B
1
,
�^
��
CRITICAL POINTS
"
%"
A. Overlaps and Seams
— ' ">"
NOTE:
B. Projected Water Line
`."-"'.�-";.•'.
" *IN LOOSE SOIL CONDITIONS,
C. Channel Bottom/Side
y •" . " • THE USE OF STAPLE OR STAKE
Slope Vertices
III'.' "• "
. • `- LENGTHS GREATER THAN 6" (15
CM) MAY BE NECESSARY TO
I I I_I I I �I I
II I II I II I III�II II I �II
PROPERLY SECURE THE
BLANKETS.
II 11=1 11=1 11=1 I
I I III I III III I I I
SLOPE INSTALLATION INSTRUCTIONS:
I
1. PREPARE SOIL BEFORE INSTALLING BLANKETS, INCLUDING ANY NECESSARY APPLICATION OF LIME, FERTILIZER, AND SEED.
2. BEGIN AT THE TOP OF THE SLOPE BY ANCHORING THE BLANKET IN A 6" (15 CM) DEEP X 6" (15 CM) WIDE TRENCH WITH APPROXIMATELY 12"
(30CM) OF BLANKET EXTENDED BEYOND THE UP-SLOPE PORTION OF THE TRENCH. ANCHOR THE BLANKET WITH A ROW OF STAPLES/STAKES
APPROXIMATELY 12" (30 CM) APART IN THE BOTTOM OF THE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. APPLY SEED TO
COMPACTED SOIL AND FOLD REMAINING 12" (30 CM) PORTION OF BLANKET BACK OVER SEED AND COMPACTED SOIL. SECURE BLANKET OVER
COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED APPROXIMATELY 12" (30 CM) APART ACROSS THE WIDTH OF THE BLANKET.
3. ROLL THE BLANKETS IN DIRECTION OF WATER FLOW. BLANKETS WILL UNROLL WITH APPROPRIATE SIDE AGAINST THE SOIL SURFACE. ALL
BLANKETS MUST BE SECURELY FASTENED TO SOIL SURFACE BY PLACING STAPLES/STAKES IN APPROPRIATE LOCATIONS AS SHOWN IN THE STAPLE
PATTERN GUIDE. WHEN USING THE DOT SYSTEM, STAPLES/STAKES SHOULD BE PLACED THROUGH EACH OF THE COLORED DOTS CORRESPONDING
TO THE APPROPRIATE STAPLE PATTERN.
4. THE EDGES OF PARALLEL BLANKETS MUST BE STAPLED WITH APPROXIMATELY 2" - S" (5 CM - 12.5 CM) OVERLAP DEPENDING ON BLANKET TYPE. 5.
CONSECUTIVE BLANKETS SPLICED DOWN THE SLOPE MUST BE PLACED END OVER END (SHINGLE STYLE) WITH AN APPROXIMATE 3" (7.5 CM)
OVERLAP. STAPLE THROUGH OVERLAPPED AREA, APPROXIMATELY 12" (30 CM) APART ACROSS ENTIRE BLANKET WIDTH.
5. PLACE CONSECUTIVE BLANKETS END -OVER -END (SHINGLE STYLE) WITH A 4"-6" OVERLAP. USE A DOUBLE ROW OF STAPLES STAGGERED 4" APART AND
4" ON CENTER TO SECURE BLANKETS .
6 FULL LENGTH EDGE OF BLANKETS AT TOP OF SIDE SLOPES MUST BE ANCHORED WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12"(30CM)
APART INA 6"(15CM) DEEP X 6"(15CM) WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING.
7. ADJACENT BLANKETS MUST BE OVERLAPPED APPROXIMATELY 2"-5" (5-12.5CM) (DEPENDING ON BLANKETS TYPE) AND STAPLED.
SPECIES)
CROSS-SECTION
INSPECTION AND MAINTENANCE:
This consists primarily of two components, stream stabilization
structures (J -Hooks, Cross vanes, etc.) and planting of the stream
banks and riparian areas. In the event that the stream structures
shift, wash away, settle, or otherwise physically cannot function as
designed, contact the area NRCS Agent. If the new plantings
experience a mortality rate of greater than 25%, the dead/dying
plants will need to be replaced.
PERMANENT SEED MIX:
APPLY AT 15 LBS PER ACRE OF DISTURBANCE (per specifications of
seed supplier):
ERNST CONSERVATION SEED MIX ERNMX-178 (FLOODPLAIN MIX)
WHICH INCLUDES THE FOLLOWING SPECIES:
Fox Sedge, Partridge Pea, Dear Tongue, Little Bluestem, Virginia Wild
Rye, Riverbank Wild Rye, Swamp Sunflower, Ox Eye Sunflower, Arrow
Wood, Big Bluestem, Silky Dogwood, Switchgrass, Indiangrass,
Staghorn Sumac, Showy Tick Trefoil, Purple Bergamot, Black Eyed
Susan, Joe Pye Weed , Soft Rush, Giant Ironweed, Tall White Beard
Tongue, Spotted Joe Pye Weed, Bone Set, and Blue False Indigo.
TEMPORARY SEED MIX AND SPECIFICATIONS:
Common Name Scientific Name Rate per Acre Optimal
Planting Dates
Rye grain Secale cereale 30 lbs Aug 15
-May 15
Browntop millet Urochloa ramosa 10 lbs May 15
- Aug 15
Seedbed Preparation:
Disturbed soils within riparian areas will be amended to provide an
optimum environment for seed germination and seedling growth.
Surface soils will be loose enough for water infiltration and root
penetration. Lime will be added to the soil to ensure a pH level
between 5.5 - 7. Fertilizer (18-46-0) will be added to nutrient deficient
areas. All riparian areas will be raked to loosen compacted soil prior to
seeding.
TYPICAL BEDFORM GRADING DETAIL
RUN I POOL
\
/ GLIOE
POOL G�lo / RUN POOL I
F4OW 1 PLAN VIEW
WATER
F[Ow`.
PRnFri F vrFLv
N'It CO
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13/18
ROCK ]-HOOK VANE STRUCTURE
MATERIAL NOTES:
1. ROCK DIMENSIONS SHALL BE APPROXIMATELY 1'-2' THICK, 2'-3'
WIDE, AND 3'-5' LONG.
2. ROCK SHALL BE NATIVE STONE HARVESTED LOCALLY OR FROM
EXISTING STREAM.
3. THE ROCKS SHOULD BE RECTANGULAR OR NEARLY SO AT THE
ROCK TO ROCK CONTACT. THE ROCK TO ROCK CONTACT
SHOULD BE SOLID. IF ROCKS ARE NOT PERFECTLY FLAT, THE
THICKER END SHOULD BE PLACED DOWNSTREAM.
CONSTRUCTION NOTES:
1. STRUCTURE DIMENSION, ELEVATION, AND LOCATION LOCATION
DETAILS PROVIDED IN TABLES.
2. THE LOWER ROCK FOOTER WILL FIRST BE PLACED FOLLOWED BY
THE HEADER ROCK TO SET THE INITIAL STRUCTURE ELEVATION.
3. THE SUBSEQUENT ROCK (MOVING UPSTREAM) AND ASSOCIATED
FOOTERS WILL THEN BE SET SIGHTING THE PROPOSED 20-30° BANK
DEFLECTION LINE.
4. ROCK PLACEMENT FOLLOWS MOVING UPSTREAM ATA 2-7% SLOPE
UNTIL A BANKFULL ELEVATION IS REACHED AT THE END OF THE
STRUCTURE WING.
5. A ROCK SILL WILL THEN BE CONSTRUCTED PERPENDICULAR TO THE
STRUCTURE ANGLE TO PREVENT THE FORMATION OF A CUTOFF
CHANNEL.
6. A TRENCH SHALL BE DUG UPSTREAM ON THE BANKSIDE OF THE
VANE ARM WHERE NON -WOVEN GEOTEXTILE FABRIC WILL BE PLACED
WITH APPROX. 2' OF OVERLAP
7. BACKFILL TRENCH WITH NATIVE MATERIALS AND RE -VEGETATE. Q
VANE ARM
APEX ROCK
B (it
APS 1/4 TO 1/3 ROC B'
IAMETER IN HOOK
1/3 GLIDE
F o�
HEADER ROCK
FOOTER ROCK
GEOTEXTILE FABRIC
CUT-OFF SILL
'-OFF SILL (TYP)
CUT-OFF SILL ('
PLAN VIEW
1 ..
A -A' `FOOTER ROCK
STONE AND COBBLE CROSS-SECTION HEADER ROCK
MACE ROCK
W61619-1
2%-7%
GEOTEXTILE
FABRIC
O:. F .11.
ir
POOL
.. •7,_ OCK
PROFILE
Brushy Fork Structure Dimension Table
1/3 Bankfull Width
6.7
Vane Arm Angle (deg)
20.0
Vane Arm Angle (rad)
0.35
Stream Length (ft)
18.3
Vane Arm Length (ft)
19.5
Vane Slope (%)
3.3-3.8
Vane Arm Height (ft)*
0.65-0.75
Bankfull Max Depth (ft)
2.3
TW Elevation Change (ft)
0.2-0.3
*Structures to be installed at 3/4
Bankfull Elevation (BKF- 0.5 ft)
NFNR Upstream Structure Dimension Table
1/3 Bankfull Width
16.0
Vane Arm Angle (deg)
20.0
Vane Arm Angle (rad)
0.35
Stream Length (ft)
44.0
Vane Arm Length (ft)
46.8
Vane Slope (%)
4.3-4.9
Vane Arm Height (ft)*
2.0-2.3
Bankfull Max Depth (ft)
3.7
TW Elevation Change (ft)
0.2-0.6
NFNR Upstream Structure Dimension Table
1/3 Bankfull Width
16.0
Vane Arm Angle (deg)
20.0
Vane Arm Angle (rad)
0.35
Stream Length (ft)
44.0
Vane Arm Length (ft)
46.8
Vane Slope (%)
4.3-4.9
Vane Arm Height (ft)*
2.0-2.3
Bankfull Max Depth (ft)
3.7
TW Elevation Change (ft)
0.2-0.6
Brushy Fork J -Hook Structure Elevation Table
North Fork New River J -Hook Structure Elevation Table
J -Hook
1
2
3
4
5*
6*
Apex Sta. (ft)
0+95.5
2+15.0
3+59.0
5+85.0
6+46.0
7+69.0
Downstream Sta. (ft)
1+13.8
2+33.3
3+77.3
6+03.3
6+64.3
7+87.3
Apex TW EL. (ft)
3023.80
3022.70
3021.60
3020.10
3019.70
3019.00
Top of Apex Header EL. (ft)
3024.75
3023.65
3022.55
3021.05
3020.65
3019.95
Apex BKF EL. (ft)
3026.10
3025.00
3023.90
3022.40
3022.00
3021.30
Vane Slope (%)
3.8%
3.8%
3.8%
3.8%
3.8%
3.8%
Downstream BKF EL. (ft)
3026.00
3024.90
3023.80
3022.30
3021.90
3021.20
3/4 Downstream BKF EL. (ft)
3025.50
3024.40
3023.30 1
3021.80 1
3021.40
3020.70
*Backwater conditions, design bankfull elevation is not top of bank
N
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Sheet
14/18
North Fork New River J -Hook Structure Elevation Table
Upstream Reach
Downstream Reach
J -Hook
1
2
3
4 1
5
6
7
8
Apex Sta. (ft)
1+95.0
3+26.0
6+45.0
8+25.0
14+10.0
15+78.0
21+20.0
22+38.0
Downstream Sta. (ft)
2+39.0
3+70.0
6+89.0
8+69.0
14+54.0
16+22.0
21+65.6
22+83.6
Apex TW EL. (ft)
3028.00
3027.20 1
3025.00
3024.20
3021.40
3020.60
3017.50
3016.80
Top of Apex Header EL. (ft)
3029.20
3028.40
3026.20
3025.40
3022.60
3021.80
3018.80
3018.10
Apex BKF EL. (ft)
3031.70
3030.90
3028.70
3027.90
3025.10
3024.30
3021.30
3020.60
Vane Slope (%)
4.9%
4.9%
4.9%
4.7%
4.9%
4.9%
4.9%
4.9%
Downstream BKF EL. (ft)
3031.50
3030.70
3028.50
3027.60
3024.90
3024.10
3021.10
3020.40
N
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Sheet
14/18
MATERIAL NOTES:
1. ROCK DIMENSIONS SHALL BE 1'-2' THICK, 2'-3' WIDE, AND 3'-5'
LONG.
2. ROCK SHALL BE LOCALLY HARVESTED NATIVE STONE.
3. THE ROCKS SHOULD BE RECTANGULAR OR NEARLY SO AT THE
ROCK TO ROCK CONTACT. THE ROCK TO ROCK CONTACT
SHOULD BE SOLID. IF ROCKS ARE NOT PERFECTLY FLAT, THE
THICKER END SHOULD BE PLACED DOWNSTREAM.
CONSTRUCTION NOTES
1. STRUCTURE DIMENSION, ELEVATOR, AND LOCATION DETAILS
PROVIDED IN TABLES.
2. CONSTRUCTION SHALL BEGIN WITH THE INSTALLATION OF THE
VANE ARM PORTIONS OF THE STRUCTURE INCLUDING HEADER
AND FOOTER ROCKS.
3. ARM ANGLE AND SLOPE WILL BE STAKED OUT OR VERIFIED BY
CONSTRUCTION OVERSIGHT STAFF PRIOR TO CONSTRUCTION.
4. GEOTEXTILE CLOTH WILL BE PLACED AGAINST THE OUTSIDE EDGE
OF THE THE VANE ARM BOULDERS.
5. THE VANE ARM CUT-OFF SILLS WILL BE CONSTRUCTED
PERPENDICULAR TO THE ARM ANGLE TO PREVENT THE
FORMATION OF A CUTOFF CHANNEL.
6. IN THE CENTER (CROSS) PORTION THE HEADER ROCKS SHALL BE
PLACED SO THAT THE TOP OF THE FOOTER ROCK IS AT AN
ELEVATION EQUAL TO THE PROPOSED BED ELEVATION.
7. GEOTEXTILE FABRIC SHALL BE PLACED ALONG THE ARM TRENCH
WITH APPROX. 2 FT. OF OVERLAP.
8. ROCK FILL MATERIAL SHALL BE BACK FILLED AROUND THE FABRIC.
9. THE HEADER ROCKS ON THE VANE ARM PORTION SHALL BE
PLACED SO THAT THEY SLOPE UP FROM THE BED ELEVATION AT
THE CROSS PORTION, TO A BANKFULL ELEVATION AND MEET THE
BANK ATA 150-220 ANGLE.
FOOTER
ROCK CROSS -VANE STRUCTURE
CUT-OFF SILL
SURFACE ROCK (TYP)- `NNQV%`
NOTE:
POOL STEP OMITTED FOR CLARITY
GAPS a - 3
ROCK DIAMETER
)NE AND COBBLE
ROCK
FLOW
A -A'
CROSS-SECTION
SET TOP OF FOOTER TO
MATCH THALWEG ELEVATION
rIL
BASEDONSIILAR
L BY ROSGEN.
AND HYDROLOGY, 2013
B -B'
PROFILE VIEW
Brushy Fork Structure Dimension Table
1/3 Bankfull Width
6.7
Vane Arm Angle (deg)
20.0
Vane Arm Angle (rad)
0.35
Stream Length (ft)
18.3
Vane Arm Length (ft)
19.5
Vane Slope (%)
3.3-3.8
Vane Arm Height (ft)*
0.65-0.75
Bankfull Max Depth (ft)
2.3
TW Elevation Change (ft)
0.2-0.3
*Structures to be installed at 3/4
Bankfu
Il Elevation (BKF- 0.5 ft)
NFNR Upstream Structure Dimension Table
1/3 Bankfull Width
16.0
Vane Arm Angle (deg)
20.0
Vane Arm Angle (rad)
0.35
Stream Length (ft)
44.0
Vane Arm Length (ft)
46.8
Vane Slope (%)
4.3-4.9
Vane Arm Height (ft)*
2.0-2.3
Bankfull Max Depth (ft)
3.7
TW Elevation Change (ft) F
0.2-0.6
NFNR Upstream Structure Dimension Table
1/3 Bankfull Width
16.0
Vane Arm Angle (deg)
20.0
Vane Arm Angle (rad)
0.35
Stream Length (ft)
44.0
Vane Arm Length (ft)
46.8
Vane Slope (%)
4.3-4.9
Vane Arm Height (ft)*
2.0-2.3
Bankfull Max Depth (ft)
3.7
TW Elevation Change (ft)
0.2-0.6
Brushy Fork Cross Vane Structure Elevation Table
Cross Vane
1
2
3
4*a
Apex Sta. (ft)
0+27.0
2+87.0
4+30.0
7+07.5
Downstream Sta. (ft)
0+45.3
3+05.3
4+48.3
7+25.8
Apex TW EL. (ft)
3024.40
3022.20
3021.00
3019.40
Top of Apex Header EL. (ft)
3025.35
3023.15
3021.95
3020.35
Apex BKF EL. (ft)
3026.70
3024.50
3023.30
3021.70
Vane Slope (%)
3.3%
3.3%
3.3%
3.3%
Downstream BKF EL. (ft)
3026.50
3024.30
3023.10
3021.50
3/4 Downstream BKF EL. (ft)
3026.00
3023.80
3022.60 1
3021.00
*Backwater conditions, design bankfull elevation is not top of bank
a Cross Vane has nos tep
North Fork New River Cross Vane Structure Elevation Table
Upstream Reach
Downstream Reach
Cross Vane
1
2
3
4a
5
6
Apex Sta. (ft)
0+55.0
4+64.0
9+90.0
12+30.0
17+63.0
19+36.0
Downstream Sta. (ft)
0+99.0
5+08.0
10+34.0
12+74.0
18+07.0
19+81.6
Apex TW EL. (ft)
3029.10
3026.30
3023.60
3022.20
3019.80
3018.60
Top of Apex Header EL. (ft)
3030.30
3027.50
3024.80
3023.40
3021.00
3019.90
Apex BKF EL. (ft)
3032.80
3030.00
3027.30
3025.90
3023.50
3022.40
Vane Slope (%)
4.7%
1 4.3%
4.7%
4.9%
4.3%
4.3%
Downstream BKF EL. (ft)
3032.50
1 3029.50
3027.00
3025.70
3023.00
3021.90
a Cross Vane has no step
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Sheet
15118
MATERIAL NOTES:
1. HEADER ROCK DIMENSIONS SHALL BE I'-2' THICK, 2'-3' WIDE,
AND 3'-5' LONG.
2. ROCK SHALL BE NATIVE STONE HARVESTED LOCALLY OR FROM
EXISTING STREAM.
3. LOG VANES AND ROOTWADS SHALL BE 12" MINIMUM
DIAMETER AT BREAST HEIGHT (DBH).
4. ROOT WADS SHALL HAVE A MINIMUM 5' DIAMETER ROOT
FAN.
S. LOG VANES SHALL BE LONG ENOUGH TO FULFILL STRUCTURE
DIMENSION REQUIREMENTS AND TO EXTEND 5' INTO
SUBSTRATE AS WELL AS 5' INTO STREAMBANK.
CONSTRUCTION NOTES:
1. THE ROOTWAD SHALL BE PLACED FIRST, EXTENDING A MINIMUM
OF 15' INTO THE STREAMBANK.
2. PLACE THE LOG VANE ON TOP OF THE FOOTER LOG VANE,
EXTENDING 5' INTO THE SUBSTRATE, 5' INTO THE STREAMBANK,
KEYING IN AT BANKFULL.
3. PLACE HEADER ROCK FLUSH WITH SUBSTRATE AT APEX OF LOG
VANE TO SECURE STRUCTURE.
4. A TRENCH SHALL BE DUG UPSTREAM ON THE BANKSIDE OF THE
WING WHERE NON -WOVEN GEOTEXTILE FABRIC WILL BE PLACED
WITH APPROX. 2' OF OVERLAP.
5. SECURE GEOTEXTILE FABRIC ON THE UPSTREAM SIDE OF THE
ENTIRE LOG VANE WITH ROOFING NAILS.
6. BACKFILL TRENCH WITH NATIVE MATERIALS AND RE -VEGETATE.
SINGLE LOG VANE STRUCTURE
BURIED 15-20' EXTENDING
INTO STREAMBANK
NON -WOVEN GEOTEXTILE
FABRIC LAID OVER WOODY
DEBRIS ON INSIDE OF LOG.
;TEN WITH ROOFING NAILS.
pt0tv1/4-1/3
BKF WIDTH
0*1�7
8
L____
ROOTWAD--
\\\ t
Q�
J
HEADER ROCK (BURIED
FLUSH WITH SUBSTRA7
LOG VANES KEYED IN
EXTENDING 4-5' INTO Q
SUBSTRATE
IJI_vilayiMm
HEADER ROCK FLUSH WITH SUB STRA7E /
LOG VANE
A -A'
CROSS-SECTION
1-1
NITS,
aaseo om smrua
BY ROSGEN.
HYDROLOGY, 201J_
FLOW
2D/o-7D/D
HEADER ROCK FLUSH WITH SUBSTRATE
i
LOG VANES KEYED IN—_4
EXTENDING 4-5' INTO
SUBSTRATE
8-8'
PROFILE VIEW
LOG VANES KEYED IN
EXTENDING 4-5'INTO
STREAMBANK
B'
LOG VANES KEYED IN
EXTENDING 4-5'INTO
STREAMBANK
ROOTWAD PROTRUDING
INTO FLOW, USED AS
FOOTER LOG
TOE WOOD BANK STABILIZATION
Wbkf
ROOT WAD
n.
112 BKF
A -A' yl
CROSS-SECTION
20� Oo
FOOTER LOG (TYP)f
FLOW `
ROOT WAD
NOTES:
1. A TRENCH SHALL BE DUG ALONG THE TOE OF THE BANK
TO A DEPTH OF THE DIAMETER OF THE FOOTER LOG.
2. A PRUNED FOOTER LOG SHALL BE PLACED AT THE TOE
OF THE CHANNEL AND THE ROOT WAD SHALL BE
PLACED DIRECTLY ABOVE IT.
3. THE VELOCITY VECTORS OF THE STREAM IN THE
CHANNEL ARE ALIGNED WITH THE TRUNKS
LONGITUDINAL AXIS AND WILL INTERSECT THE ROOT
MASS AT A 90 DEGREE ANGLE.
4. A BOULDER MAY BE PLACED ON THE DOWNSTREAM SIDE,
ON TOP OF, AND ON THE UPSTREAM SIDE BETWEEN
THE ROOTMASS AND THE BANK TO PROVIDE EROSION
CONTROL.
5. ROOTWAD LOGS SHALL BE AT LEAST 15' IN LENGTH AND
HAVE A MINIMUM DIAMETER AT BREAST HEIGHT (DBH)
OF 12".
6. SHALLOW -ROOTED RATHER THAN DEEP-ROOTED TREE SPECIES
WITH RATIOS OF ROOT FAN DIAMETERS TO BOLE DIAMETERS
OF 4.0 OR GREATER ARE PREFERRED; AVOID NARROW BASED,
FAN DIAMETER RATIOS LESS THAN 3.0.
-I
PROPOSED BANK BENCH,
-FOOTER LOG
FILLER LOGS, TOPS, LIMBS,
BRUSH, AGGREGATE, SOIL
P
Sheet
16/18
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PLAN VIEW
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Sheet
16/18
SINGLE ROCK VANE STRUCTURE
MATERIAL NOTES:
1. ROCK DIMENSIONS SHALL BE APPROXIMATELY 1'-2' THICK, Z-3'
WIDE, AND 3'-5' LONG.
2. ROCK SHALL BE NATIVE STONE HARVESTED LOCALLY OR FROM
EXISTING STREAM.
3. THE ROCKS SHOULD BE RECTANGULAR OR NEARLY SO AT THE
ROCK TO ROCK CONTACT. THE ROCK TO ROCK CONTACT
SHOULD BE SOLID. IF ROCKS ARE NOT PERFECTLY FLAT, THE
THICKER END SHOULD BE PLACED DOWNSTREAM.
CONSTRUCTION NOTES:
1. THE LOWER ROCK (HEAD ROCK) FOOTER WILL FIRST BE PLACED
FOLLOWED BY THE HEAD ROCK TO SET THE INITIAL STRUCTURE
ELEVATION.
2. THE SUBSEQUENT ROCK (MOVING UPSTREAM) AND ASSOCIATED
FOOTERS WILL THEN BE SET SIGHTING THE PROPOSED 20-30° BANK
DEFLECTION LINE.
3. ROCK PLACEMENT FOLLOWS MOVING UPSTREAM AT A 2-7010 SLOPE
UNTIL A BANKFULL ELEVATION IS REACHED AT THE END OF THE
STRUCTURE WING.
4. A ROCK SILL WILL THEN BE CONSTRUCTED PERPENDICULAR TO THE
STRUCTURE ANGLE TO PREVENT THE FORMATION OF A CUTOFF
CHANNEL.
5. A TRENCH SHALL BE DUG UPSTREAM ON THE BANKSIDE OF THE
WING WHERE NON -WOVEN GEOTEXTILE FABRIC WILL BE PLACED
WITH APPROX. 2' OF OVERLAP
6. BACKFILL TRENCH WITH NATIVE MATERIALS AND RE -VEGETATE.
1/4-1/3 Ba
FLOW
VE STONE AND COBBLE CROSS-SECTION
gilr"CE
ROCK
GEOTEXTILEFOOTER ROCK(S)—
NONC :O
FABRICFL
POOL
k -F•. •1
B -B'
PROFILE VIEW
MATERIAL NOTES:
1. ROCK DIMENSIONS SHALL BE 1'-2' THICK, 2'-3' WIDE, AND 3'-5'
LONG.
2. ROCK SHALL BE NATIVE STONE HARVESTED LOCALLY OR FROM
EXISTING STREAM.
3. THE ROCKS SHOULD BE RECTANGULAR OR NEARLY SO AT THE
ROCK TO ROCK CONTACT. THE ROCK TO ROCK CONTACT F_
SHOULD BE SOLID. IF ROCKS ARE NOT PERFECTLY FLAT, THE v'
THICKER END SHOULD BE PLACED DOWNSTREAM.
4. VANE AND SUPPORT LOGS SHALL 12" MINIMUM DIAMETER AT B
BREAST HEIGHT (DBH). B
5. ROOT FANS SHALL BE 5' MINIMUM DIAMETER.
CONSTRUCTION NOTES:
1. THE LOG FOOTER ROCK WILL FIRST BE PLACED FOLLOWED BY
THE VANE LOG TO SET THE INITIAL STRUCTURE ELEVATION.
2. SET THE SUPPORT LOG AND VANE LOG UPSTREAM AT A 2-7%
SLOPE UNTIL A BANKFULL ELEVATION IS REACHED AT THE END
OF THE VANE LOG.
3. ENSURE THE ROOTWADS OF VANE AND SUPPORT LOGS ARE IN
GOOD CONTACT WITH EACH OTHER AND THE ROOTS AS
INTERLOCKED AS POSSIBLE.
4. SECURE GEOTEXTILE FABRIC TO VANE LOG WITH ROOFING NAILS.
5. CONSTRUCT THE ROCK HOOK BEGINNING FROM THE APEX OF THE
VANE LOG.
6. A ROCK CUT OFF SILL WILL THEN BE CONSTRUCTED
PERPENDICULAR TO THE ROCK HOOK TO PREVENT THE
FORMATION OF A CUTOFF CHANNEL.
7. A TRENCH SHALL BE DUG UPSTREAM ON THE BANKSIDE OF THE
VANE LOG WHERE NON -WOVEN GEOTEXTILE FABRIC WILL BE
PLACED WITH APPROX. 2' OF OVERLAP. ATTACH FABIRC TO VANE
LOG WITH ROOFING NAILS.
8. BACKFILL TRENCH WITH NATIVE MATERIALS AND RE -VEGETATE.
CUT-OFF
GEOTEXTILE FABRIC
ROCK/LOG ]-HOOK VANE STRUCTURE
BURIED
SUPPORTLOG-� 'I Q
NON -WOVEN GEOTEXTILE
FABRIC LAID OVER WOODY
DEBRIS ON INSIDE OF LOG.
TEN WITH ROOFING NAILS.
RUGLIDE
BURIED 4-5' 113i %� ��
HEADER ROCK
I OOTER ROCK
GAPS 3 - 3 ROCKS jCUT-OFF SILL
DIAMETER IN
HOOK
BUTTRESS ROCK BURIED
FLUSH WITH BANK ON LARGE
LATERAL ROOT
aa�
B' -
CUT-OFF SILL
PLAN VIEW
LOG VANE
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LOG FOOTER ROCK
J �
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EADER ROCK A A'
m
._
FOO ER ROCK(S) CROSS-SECTION
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v J
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/ POOL
BURIED 8-10 .7 a�
FOOTER ROCK
c
B -B'
Sheet
PROFILE VIEW
17/18
NOTE: SEE
LONGITUDINAL
PROFILE FOR RI
LENGTH AND SI
A
NOTE: UTILIZE
NATURAL SUBSTRATE
EXCAVATED FROM
SCOUR POOLS WITH
MEDIAN PARTICLE
SIZE 1 "-3 ".
LINE ENTIRE WIDTH OF
ACTIVE BED WITH SUBSTRATE
TO PREVENT SCOURING
CONSTRUCTED RIFFLE
TOE OF BANK)
PLAN VIEW
A'
TOP OF BANK
LARGE COBBLE/
SMALL BOULDER
BACKFILL
AIl1TFC-
FMA
CROSS-SECTION
RIFFLE MATERIAL
::7M
TOP OF BANK
OF BANK
LARGE WOODY
DEBRIS
1. CONSTRUCTED RIFFLES ARE INSTALLED ONLYAT LOCATIONS DESIGNATED
ON SITE PLAN AT ELEVATIONS PROVIDED IN THE LONGITUDINAL PROFILE.
ALL OTHER PROPOSED RIFFLES IN THE PROFILE WILL FORM NATURALLY
OVER TIME.
2. CONSTRUCTED RIFFLES INSTALLED WHERE NATURAL CHANNEL FACETS
HAVE SHIFTED DURING LATERAL MIGRATION OF CHANNEL, AND RIFFLE
MUST BE SHIFTED OUT OF MEANDER BEND.
3. CONSTRUCTED RIFFLES ESTABLISH GRADE UPSTREAM OF INSTREAM
STRUCTURES TO STABILIZE BOTH PROFILE AND PATTERN.
4. ADD SMALL BOULDER/LARGE COBBLE AND LARGE WOODY DEBRIS TO
CREATE HETEROGENEITY IN SUBSTRATE FLOW.
BOULDER TOE REVETMENT
E: a
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Sheet
18/18
2(MAX)
1
BRING TOP OF FABRIC
"?•.
PERMANENT STREAM CROSSING
TO 6" BELOW BACKFILL\\ :`;`=i LIVE STAKE
TOE OF VEGETATED
\\\� `•
NON -WOVEN FILTER FABRIC ; •'.:• ROCK SLOPE
OVERLAP 2' MIN AT AL : •:`.;,
NOTES:
JOINTS AND EDGES \\\\j ":;' ":; ..','': STREAM BED
PROPOSED STREAMBED 1.
STREAM CROSSING WIDTH SHALL BE 12'
%•' ' •'
BASEFLOW
PERPENDICULAR TO STREAM FLOW.
FREE -DRAINING BACKFIL \ •� 1.5'MIN
_ 2.
4'1
STREAM CROSSING LOCATION IS DESIGNATED IN THE
FOUNDATION BOULDER
`L
I1 III —I III—III I
SITE PLAN WITH ELEVATION PROVIDED IN THE
I =
LONGITUDINAL PROFILE.
III I —III—III—I — V I—III—III I 3.
SIDE SLOPES SHALL BE 2:1 MAXIMUM.
NOTES:
_—III—
III I I—III—III—III_ III—III III—III 1 4.
TEMPORARY STREAM CROSSING INSTALLED IN FLOOD
1. MIN. ROCK DIMENSIONS SHALL BE V-2' THICK, 2'-3' WIDE, AND 3'-5' LONG.
—I = _ _
-I I �-III-III-I I i -III -I I -III -III III I -III-
PLAIN DITCH SHALL MEET THESE SPECIFICATIONS
2. 4' MAXIMUM ROCK SLOPE HEIGHT.
III
—III—III—III—III— I
WITHOUT BOULDER SILLS AND WILL BE REMOVED
3. USE NATURAL STONE THAT IS FRESH TO SLIGHTLY WEATHERED, HARD (RINGS WITH HAMMER BLOW),
—III—III—III-I _ I _— GEOTEXTILE FABRIC
—I I I—I I I-_ 1
I—I I 1=1 1 I—
AFTER CONSTRUCTION.
AND FREE OF OPEN JOINTS OR DISCONTINUITIES.
—11 — (NON-WOVEN, NRCS CLASS I)
4. BOULDERS SHALL HAVE AT LEAST TWO FLAT SIDES THAT ARE PARALLEL HORIZONTALLY WHEN
GRAVEL STONE; 6" MIN THICKNESS) BOULDER SILL (2' DIA)
STACKED.
(2-4"
A_ A
5. THE FIRST BOULDER STACKED ON TOP OF A FOUNDATION BOULDER SHALL BE STACKED DIRECTLY
1
ABOVE THE FOUNDATION BOULDER.
—
NG "'gyp CON5E0.VaT1ON PRACTICE
lE 9)8 ESTREAM CEOSSCAROLINA5TpNOARo CROSS-SECTION
6. SUBSEQUENT BOULDERS SHALL BE SET BACK TO ACHIEVE A SLOPE FACE AT I -HORIZONTAL TO
4 -VERTICAL.
7. BOULDERS SHALL BE PLACED IN A RUNNING BOND TO COVER THE JOINT BETWEEN ADJACENT
BOULDERS BELOW AND AVOID A STACKED BOND ARRANGEMENT OF BOULDERS.
8. EXTEND BOULDERS UPSLOPE TO THE INNER BERM ELEVATION. ADDITIONAL BOULDERS MAT BE
NEEDED IF SCOUR ELEVATION ON THE BANK FACE IS HIGHER.
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Sheet
18/18
50' MIN.
TEMPORARY CONSTRUCTION ENTRANCE DETAIL
EXISTING NATURAL
GROUND
PUBLIC ROAD
CLEAN WASHED STONE SIZES
3" UNDERCUT PRIOR TO FROM 2" TO 4" 8" DEPTH
PLACEMENT OF MACHINED
RI PRAP
ZX GEOTEXTILE FABRIC SHALL BE
TEMPORARY DRAINAGE PLACED UNDER ENTIRE
PIPE WHERE NEEDED WIDTH OF RIPRAP
A -A'
CROSS-SECTION
EDGE OF /
PUBLIC ROAD
A 2� R
50' MIN.
/ <2% SLOPE
WIRE -BACKED SILT FENCE
PLACE WOVEN WIRE FENCE BACKING BETWEEN FABRICAND
POSTS AND FASTEN SECURELY.
48"MINIMUM LENGTH STEEL POST
4' MAX CENTER DRIVEN A MINIMUM OF 18" INTO
TO CENTER GROUND
28" MINIMUM HEIGHT OF
GEOTEXTILE CLASS F
6" MINIMUM DEPTH IN
GROUND
FLOW FLOW PLACE WOVEN WIRE FENCE
BACKING BETWEEN FABRIC
48" MINIMUM STEEL AND POSTS AND FASTEN
PERSPECTIVE VIEW POST LENGTH n T SECURELY.
FILTER _I � k STEEL POST SECTION
CLOTHNI MUM 30' ABOVE
GRO
FLOW
UNDISTURBED
GROUND
EMBED GEOTEXTILE CLASS F STEEL POST DRIVEN A
A MINIMUM OF 6" VERTICALLY MINIMUM OF 18" INTO
INTO THE GROUND THE GROUND
POSTS i 2
Na SECTION 8 CROSS-SECTION
SECTION A
TOP VIEW
(JOINING TWO ADJACENT
SILT FENCE SECTIONS)
PLAN VIEW
d
CLEAN WASHED STONE SIZES FROM 2" TO 4" 8"
DEPTH WITH GEOTEXTILE FABRIC
TEMPORARY DRAINAGE
PIPE WHERE NEEDED
NOTES:
1. STEEL POSTS SHALL BE A MINIMUM OF 48" LONG DRIVEN A MINIMUM OF 18" INTO THE
GROUND. THE STEEL POSTS MAY BEA STANDARD TOR U SECTION WEIGHING NO LESS
THAN 1.3 LBS/FT.
2. GEOTEXTILE AND WOVEN WIRE FENCE BACKING SHALL BE FASTENED SECURELY TO EACH
POST FROM TOP TO GROUND LEVEL AND THE GEOTEXTILE SHALL MEET THE FOLLOWING
REQUIREMENTS:
TENSILE STRENGTH WARP 260 LBS/1N. (MIN), FILL 180 LBS/IN.
BURSTING STRENGTH 175 LBS/IN. (MIN)
FLOW RATE 70 GPM/SQ.FT.
3. WHERE ENDS OF GEOTEXTILE FABRIC COME TOGETHER THEY SHALL BE OVERLAPPED,
FOLDED, AND SECURED TO PREVENT SEDIMENT BYPASS.
4. SILT FENCE SHALL BE INSPECTED BEFORE AND AFTER EACH RAIN EVENT AND MAINTAINED
WHEN BULGES OCCUR OR WHEN SEDIMENT ACCUMULATION REACHES 50% OF THE FABRIC
HEIGHT.
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Sheet
E1