20201177 Ver 1_SAW-2020-01307_Stream Relocation Dwgs_20200909

NGS MONUMENT "BOUND"
NC GRID NAD 83
MEASURED AND USED
N-497,312.21
E=1,399,555.48
ELEV=684.18 NAVD 88
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LOT 146
LOT 156 LOT 154 LOT 149 CROSS —VANES -g
LOT 157 LOT 155 LOT 153 LOT 151
O COVENTR MAP 1
COVENT Y MAP 1 1 ti Z MB. 35, G. 345
MB. 35. PG. 345 A
LEGEND:
STREAM A
STREAM IMPACT
STREAM RELOCATION
WETLAND A
FLOODPLAIN BOUNDARY
z
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E
UPPER LIMIT
OF EXISTING
INTERMITTENT
STREAM
Wks
170 LF OF
STREAM IMPACT
ROCK DROP
STRUCTURE LOT 143
LOT 144 LOT 142
COVENTRY MAP 2
MB. 35, PG. 545
MECKLENBURG COUNTY
DB. 29465. PG. 495
GREENWAY
MB. 56, PG. 626
PIN: 219-061-31
SANITARY SEWER
CONNECTION TO
BE BORE AND
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STREAM BED
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GENERAL NOTES: p y 3
1. INSTALL COIR FIBER MATTING FOR BANK STABILIZATION a g o
ALONG ENTIRE LENGTH OF RELOCATED / NEW STREAM o :S.
CHANNEL. --
2. INSTALL RIPARIAN SEEDING FROM NORMAL WATER LEVEL
TO 1' BEYOND TOP OF BANK ON BOTH SIDES OF THE
NEW CHANNEL.
00 0 50 100 2
11

650
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630
620
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GRADE
EX. GRADE EX. CHANNEL
PRO
. GRADE
(CE
PROPOSED
CHANNEL)
0+00
SCALE: 1 " = 10'
1 +00
650
mom
630
620
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SCALE: 1 " = 50'
PROP. BOULDER
CROSS -VANE, TYP.
EX. GRADE
PROP. GRADE
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CHANNEL)
2+00
SCALE: 1 " = 10'
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PROP. BOULDER
CROSS -VANE, TYP.
EX. GRADE
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_ EX. GRADE
PROP. GRADE
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CHANNEL)
3+00
SCALE: 1 " = 10'
4+00
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5+00
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MIN
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BANKFULL (SEE NOTE 3 )—
COARSE—
BACKFILL
(SEE NOTE 8)
JA
X6 \
FLOODPLAIN
SILL (TYPICAL)
I
B
X14
X3 — RIGHT VANE ARM
INTERCEPT CONTROL POINT
ELEVATION (SEE NOTE 3)
X4 — POOL CONTROL
POINT ELEVATION
l FLOW STREAM BANK,
11 TYPICAL
TOE OF BANK,
TYPICAL
1/3X5 1/3X5 1/3X5 �X1 — CROSS VANE INVERT
CONTROL POINT
ELEVATION
X8
ER AND FOOTER BOULDERS,
'VH
CAL (SEE NOTE 6)
A'FILTER FABRIC,
/ \TYPICAL (SEE NOTE 7)
�cPOOL / X13B'
7X2 — LEFT VANE ARM
INTERCEPT CONTROL POINT
STREAM BED ELEVATION (SEE NOTE 3)
BANKFULL STREAM BANK
FILTER FABRIC (SEE NOTE 7)
COARSE BACKFILL (SEE NOTE 8)
HEADER BOULDER (SEE NOTE 6)
X1 FOOTER BOULDER (SEE NOTE 6)
2xX15\\� X15 STREAM BED — POOL
BANKFULL WIDTH
X5
PLAN VIEW
TOE OF BANK
' VARIES ' X14
0' TO 1 /3 X5
VANE ARM SECTION A - A'
X5
X7 1 /3 X5 1 /3 X5 1 /3 X5 X7
X3 X2
X1 7
FLOODPLAIN t x J
SILL, TYPICAL
FILTER \—
FABRIC
HEADER BOULDER, TYPICAL
FOOTER BOULDER, TYPICAL
CROSS SECTION
B-B'
_ BANKFULL
(SEE NOTE 3)
X1 —CROSS VANE ��� — —
INVERT CONTROL — — — —
POINT ELEVATION
(SEE NOTE 2) VARIES
COARSE VARIES
01- X2 OR X3 — LEFT OR
BACKFILL RIGHT VANE ARM INTERCEPT
FLOW X12 (SEE NOTE 10E) CONTROL POINT ELEVATION
X4 — POOL CONTROL
X15
POINT ELEVATION
�(SEE NOTE 2)FLOW
Pool
PROFILE VIEW
CV-1
CV-2
CV-3
I CV-4
622.00
625.00
628.00
631.00
622.16
625.16
628.16
631.16
622.16
625.16
628.16
631.16
620.16
623.16
626.16
629.16
DIMENSIONS
VARIABLE
VALUES
TYPICAL UNIT
DESCRIPTION
X1
FT. (NAVD)
CROSS VANE INVERT CONTROL POINT ELEVATION
X2
FT. (NAVD)
LEFT VANE ARM INTERCEPT CONTROL POINT ELEVATION
X3
FT. (NAVD)
RIGHT VANE ARM INTERCEPT CONTROL POINT ELEVATION
X4
FT. (NAVD)
POOL CONTROL POINT ELEVATION
X5
6
FT.
BANKFULL WIDTH
X6
8
FT.
VANE ARM LENGTH
X7
3
FT.
FLOODPLAIN SILL LENGTH
X8
3
FT.
LENGTH OF COARSE BACKFILL
X9
12
IN.
D50 OF COARSE BACKFILL
X10
30
DEGREES
VANE ARM ANGLE WITH STREAM BANK
X11
1 2"
IN. OR FT.
DIFFERENCE BETWEEN TOP OF BANK (BANKFULL) AND VANE
ARM INTERCEPT POINT
X12
2%
PERCENT
VANE ARM SLOPE
X13
24"-36"
IN. OR FT.
BOULDER LENGTH
X14
24
IN. OR FT.
BOULDER WIDTH
X15
8"
IN. OR FT.
BOULDER THICKNESS
X16
2
FT.
MAXIMUM POOL DEPTH
X17
6
IN.
HEADER BOULDER SETBACK
NU E8:
1. A BOULDER CROSS VANE IS A GRADE CONTROL, IN -STREAM STRUCTURE THAT DIRECTS STREAM FLOW AWAY FROM THE STREAM BANKS AND IN TOWARD THE CENTER OF THE CHANNEL.
2. ELEVATION CONTROL POINTS SHALL BE DESIGNATED AT THE UPSTREAM INVERT (CENTER) OF THE CROSS VANE TO ESTABLISH PART OF THE PROFILE. POOL ELEVATION CONTROL POINTS OR EXCAVATION TO A SPECIFIED MAXIMUM
POOL DEPTH SHALL BE DESIGNATED TO ESTABLISH THE REMAINING PROFILE. SURVEY OF CONTROL POINTS SHALL BE REQUIRED TO ESTABLISH ACCURATE CROSS VANE INSTALLATION WITHIN THE TOLERANCE SPECIFIED BY THE
DESIGNER.
3. THE VANE ARM SHALL INTERCEPT THE STREAM BANK AT A HEIGHT EQUAL TO BETWEEN % BANKFULL STAGE AND BANKFULL STAGE. ELEVATION CONTROL POINTS MAY BE ESTABLISHED AT THE LEFT AND RIGHT STREAM BANK/VANE
ARM INTERCEPT POINTS. THE VANE ARM INTERCEPT LOCATION MAY BE OTHERWISE DESCRIBED BY ITS RELATIONSHIP TO BANKFULL STAGE OR BY THE LENGTH AND SLOPE OF THE VANE ARM. BANKFULL IS NOT NECESSARILYTHE TOP
OF THE STREAM BANK SLOPE.
4. IF PLANS DESIGNATE THE USE OF MULTIPLE BOULDER CROSS VANES, ATABLE OF ALL STATION LOCATIONS AND CONTROL POINT ELEVATIONS SHALL BE PROVIDED IN THIS DETAIL OR PROVIDED ELSEWHERE IN THE PLANS AND
REFERENCED HEREIN.
5. TYPICAL RIFFLE AND POOL CROSS SECTIONS SHALL BE PROVIDED ELSEWHERE IN THE PLANS TO ESTABLISH THE DIMENSIONS OF THE CHANNEL GRADING INTO WHICH THE BOULDER CROSS VANES ARE TO BE INSTALLED.
6. THE CROSS VANE SHALL BE CONSTRUCTED WITH FLAT -SIDED BOULDERS OF ASIZE (LENGTH, WIDTH, AND DEPTH) AS SPECIFIED BY THE DESIGNER.
7. FILTER FABRIC OF ATYPE AND SIZE SPECIFIED BY THE DESIGNER SHALL BE USED TO SEAL THE GAPS BETWEEN THE BOULDERS AND UNDER THE COARSE BACKFILL MATERIAL. THERE SHALL BE NO FILTER FABRIC VISIBLE IN THE
FINISHED WORK; EDGES SHALL BE FOLDED, TUCKED, OR TRIMMED AS NEEDED.
8. COARSE BACKFILL OF THE BOULDER CROSS VANE SHALL BE OF ATYPE, SIZE, AND GRADATION AS SPECIFIED BY THE DESIGNER. COARSE BACKFILL SHALL BE PLACED TO ATHICKNESS EQUAL TO THE DEPTH OF THE HEADER AND
FOOTER BOULDERS AND SHALL EXTEND OUT FROM THE VANE ARMS TO THE STREAM BANK AND UPSTREAM A DISTANCE SPECIFIED BY THE DESIGNER.
9. THE INVERT (CENTER) OF THE BOULDER CROSS VANE SHALL BE CONSTRUCTED FIRST, FOLLOWED BY ONE VANE ARM AND THEN THE OTHER VANE ARM. THE FLOODPLAIN SILLS SHALL BE CONSTRUCTED LAST.
10. BOULDER CROSS VANE SHALL BE BUILT TYPICALLY AS FOLLOWS:
A. OVER -EXCAVATE STREAM BED TO A DEPTH EQUAL TO THE TOTAL THICKNESS OF THE HEADER AND FOOTER BOULDERS.
B. PLACE FOOTER BOULDERS. THERE SHALL BE NO GAPS BETWEEN BOULDERS.
C. INSTALL FILTER FABRIC.
D. PLACE COURSE BACKFILL BEHIND THE FOOTER BOULDERS.
E. INSTALL HEADER BOULDERS ON TOP OF AND SET SLIGHTLY BACK FROM THE FOOTER BOULDERS (SUCH THAT PART OF THE HEADER BOULDER IS RESTING ON THE COARSE BACKFILL). HEADER BOULDERS SHALL SPAN
THE SEAMS OF THE FOOTER BOULDERS. THERE SHALL BE NO GAPS BETWEEN BOULDERS. THE SLOPE OF THE VANE ARM IS MEASURED ALONG THE VANE ARM WHICH IS INSTALLED AT AN ANGLE TO THE STREAM BANK AND
PROFILE.
F. PLACE COARSE BACKFILL BEHIND HEADER BOULDERS ENSURING THAT ANY VOIDS BETWEEN THE BOULDERS ARE FILLED.
11. IF ANY EROSION CONTROL MATTING IS SPECIFIED FOR USE IN THE VICINITY OF THE VANE ARM INTERCEPT POINTS AND FLOODPLAIN SILLS ALL MATTING EDGES SHALL BE NEATLY SECURED AROUND THE BOULDERS.

TOP OF BANK, TYPICAL
X3 - RIGHT VANE ARM INTERCEPT
CONTROL POINT ELEVATION,
TYPICAL (SEE NOTE 2)
COARSE BACKFILL
(SEE NOTE 8)
TOP OF BANK
X10
X8
1 /3 X4
PLAN VIEW
X16
X4
X17 1/3 X4
1
+7
X3 - RIGHT VANE ARM
INTERCEPT CONTROL
POINT ELEVATION
X1 - ROCK DROP STRUCTURE INVERT CONTROL
POINT ELEVATION, TYPICAL (SEE NOTE 2)
CONNECTING BOULDER, TYPICAL
(SEE NOTE 9)
SCOUR POOL, TYPICAL
FLOODPLAIN SILL,
TYPICAL
X2 - LEFT VANE ARM INTERCEPT
CONTROL POINT ELEVATION,
TYPICAL (SEE NOTE 2)
FILTER FABRIC
(SEE NOTE 7)
X2 - LEFT VANE ARM INTERCEPT
CONTROL POINT ELEVATION
_ FLOW TOP OF BANK
FILTER FABRIC
-� X7 _
HEADER BOULDER,TYPICAL
X1 - ROCK DROP STRUCTURE \\j\\� X11
INVERT CONTROL POINT ��/\\/\\ \
ELEVATION, TYPICAL
(SEE NOTE 2) \\/�\\\�\\\�\\\�\\\ \\ \ \ X10
FOOTER BOULDER,TYPICAL
PROFILE
1
2
3
4
5
6
DIMENSIONS (VALUES TO BE PROVIDED BY DESIGNER)
STA 1+48
STA 1+35
STA 1+23
STA 1+17
STA 1+10
STA 1+05
VARIABLE
VALUES
TYPICAL UNIT
DESCRIPTION
619.00
618.50
618.00
617.50
617.00
616.50
X1
FT. (NAVD)
INVERT CONTROL POINT ELEVATION
619.10
618.60
618.10
617.60
617.10
616.60
X2
FT. (NAVD)
LEFT INTERCEPT CONTROL POINT ELEVATION
619.10
618.60
618.10
617.60
617.10
616.60
X3
FT. (NAVD)
RIGHT INTERCEPT CONTROL POINT ELEVATION
X4
6
FT.
BANKFULL WIDTH
X5
24
IN. OR FT.
D50 OF COARSE BACKFILL
X6
12
FT.
VANE ARM LENGTH
X7
VARIES
FT.
LENGTH OF INDIVIDUAL GRADE CONTROL STRUCTURE
X8
10
FT.
LENGTH OF FLOODPLAIN SILL
X9
30
DEGREES
VANE ARM ANGLE WITH TOP OF BANK
X10
181,
IN. OR FT.
DIFFERENCE BETWEEN TOP OF BANK AND VANE ARM INTERCEPT
POINT
X11
6°
IN. OR FT.
DROP BETWEEN INVERTS
X12
1%
PERCENT
VANE ARM SLOPE
X13
24"-36"
IN. OR FT.
BOULDER LENGTH
X14
12
IN. OR FT.
BOULDER WIDTH
X15
8
IN. OR FT.
BOULDER THICKNESS
X16
6'
FT.
CHANNEL WIDTH
X17
3: 1
NONE
BANK SLOPE RATIO (HORIZONTAL COMPONENT)
FOOTER BOULDER, TYPICAL (SEE NOTE 6)
HEADER BOULDER, TYPICAL (SEE NOTE 6)
X1 - ROCK DROP STRUCTURE INVERT
CONTROL POINT ELEVATION
CROSS SECTION A - A'
NOTES:
1. A ROCK DROP STRUCTURE IS A SERIES OF TWO OR MORE INTERCONNECTED IN -STREAM, GRADE CONTROL STRUCTURES THAT DIRECT STREAM FLOW AWAY FROM THE STREAM BANKS AND IN
TOWARD THE CENTER OF THE CHANNEL. THESE STRUCTURES SHALL TYPICALLY BE USED TO TIE-IN STORM DRAINAGE PIPES AND CHANNELS TO STREAMS ON STEEP SLOPES. FISH PASSAGE IS NOT A
CONCERN. IF FISH PASSAGE IS A CONCERN HOWEVER, THE DROPS BETWEEN EACH STRUCTURE SHALL BE LIMITED AS SPECIFIED BY THE DESIGNER.
2. ELEVATION CONTROL POINTS SHALL BE DESIGNATED THE UPSTREAM INVERT OF EACH GRADE CONTROL STRUCTURE TO ESTABLISH PART OF THE PROFILE. SURVEY OF CONTROL POINTS SHALL BE
REQUIRED TO ESTABLISH ACCURATE ROCK DROP STRUCTURE INSTALLATION WITHIN THE TOLERANCE SPECIFIED BY THE DESIGNER.
3. EACH VANE ARM SHALL RISE FROM THE INVERT TO INTERCEPT THE STREAM BANK AT A HEIGHT EQUAL TO BETWEEN % BANKFULL STAGE AND BANKFULL STAGE. ELEVATION CONTROL POINTS MAYBE
ESTABLISHED AT THE LEFT AND RIGHT STREAM BANK/VANE ARM INTERCEPT POINTS. BANKFULL IS NOT NECESSARILY THE TOP OF THE STREAM BANK SLOPE.
4. ATABLE OF ALL STATION LOCATIONS AND CONTROL POINT ELEVATIONS OF THE ROCK DROP STRUCTURE SHALL BE PROVIDED IN THIS DETAIL.
5. ATYPICAL CROSS SECTION SHALL BE PROVIDED ELSEWHERE IN THE PLANS TO ESTABLISH THE DIMENSIONS OF THE CHANNEL GRADING INTO WHICH THE ROCK DROP STRUCTURE IS TO BE INSTALLED.
6. THE ROCK DROP STRUCTURES SHALL BE CONSTRUCTED WITH FLAT -SIDED BOULDERS OF A SIZE (LENGTH, WIDTH, AND DEPTH) AS SPECIFIED BY THE DESIGNER.
7. FILTER FABRIC OF A TYPE AND SIZE SPECIFIED BY THE DESIGNER SHALL BE USED TO SEAL THE GAPS BETWEEN THE BOULDERS AND UNDER THE COARSE BACKFILL MATERIAL.
8. COARSE BACKFILL OF THE ROCK DROP STRUCTURE SHALL BE OF A TYPE, SIZE, AND GRADATION AS SPECIFIED BY THE DESIGNER. COARSE BACKFILL SHALL BE PLACED IN EACH GRADE CONTROL
STRUCTURE TO ATHICKNESS EQUAL TO THE DEPTH OF THE HEADER AND FOOTER BOULDERS AND SHALL ALSO EXTEND OUT FROM THE VANE ARMS TO THE STREAM BANK.
9. THE INVERT (CENTER) OF EACH GRADE CONTROL STRUCTURE SHALL BE CONSTRUCTED FIRST, FOLLOWED BY ONE VANE ARM AND THEN THE OTHER VANE ARM. BOULDERS CONNECTING THE
INDIVIDUAL GRADE CONTROL STRUCTURES SHALL THEN BE INSTALLED. THE FLOODPLAIN SILLS SHALL BE CONSTRUCTED LAST AND ARE REQUIRED ON AT LEAST THE FIRST AND LAST OF THE
INTERCONNECTED GRADE CONTROL STRUCTURES.
10. ROCK DROP STRUCTURES SHALL BE BUILT TYPICALLY AS FOLLOWS:
A. BEGIN WITH THE DOWNSTREAM -MOST (LOWEST) GRADE CONTROL STRUCTURE.
B. OVER -EXCAVATE STREAM BED TO A DEPTH EQUAL TO THE TOTAL THICKNESS OF THE HEADER AND FOOTER BOULDERS.
C. PLACE FOOTER BOULDERS. THERE SHALL BE NO GAPS BETWEEN BOULDERS.
D. INSTALL FILTER FABRIC.
E. PLACE COURSE BACKFILL BEHIND THE FOOTER BOULDERS.
F. INSTALL HEADER BOULDERS ON TOP OF AND SET SLIGHTLY BACK FROM THE FOOTER BOULDERS (SUCH THAT PART OF THE HEADER BOULDER IS RESTING ON THE COARSE
BACKFILL). HEADER BOULDERS SHALL SPAN THE SEAMS OF THE FOOTER BOULDERS. THERE SHALL BE NO GAPS BETWEEN BOULDERS.
G. PLACE COARSE BACKFILL BEHIND HEADER BOULDERS ENSURING THAT ANY VOIDS BETWEEN THE BOULDERS ARE FILLED.
11. IF ANY EROSION CONTROL MATTING IS SPECIFIED FOR USE IN THE VICINITY OF THE VANE ARM INTERCEPT POINTS AND FLOODPLAIN SILLS ALL MATTING EDGES SHALL BE NEATLY SECURED AROUND
THE BOULDERS.

X7
B,
(SEE N
MATTING, TYPICAL
(SEE NC
TOP OF BANK Af
(SEE DETAIL, SHE
DEAD STOUT STAKE,
TYPICAL (SEE DETAIL,
THIS SHEET)
MATTING
(SEE DETAIL, THI!
MATTING STAKE, TYPI(
TOE OF BANK ANCHOR
CROSS-SECTION
TOP OF BANK
MATTING, TYPICAL
(SEE NOTE 1)
MATTING ANCHOR DETAIL
ATE BASE
fER LEVEL
y� 4
UNTREATED
2" X 4" (NOMINAL)
BOARD
X9
0"-1/2„
DEAD STOUT STAKE DETAIL
MATTING WRAP
(SEE NOTE 2)
0
TOE OF BANK
STOUT STAKE, TYPICAL
(SEE DETAIL, SHEET 1)
NOTES:
1. EROSION CONTROL MATTING SHALL CONSIST OF A GEOTEXTILE OF A TYPE SPECIFIED BY THE DESIGNER INSTALLED FLAT AND STAKED AGAINST
A SLOPE AND/OR A STREAM BANK.
2. MATTING SHALL BE ANCHORED IN A TRENCH AT BOTH THE TOE AND TOP OF THE STREAM BANK. DEAD STOUT STAKES AND CLEAN SOIL
BACKFILL SHALL BE USED TO SECURE THE MATTING INTO THE TOE AND TOP OF BANK TRENCHES. TO PREVENT EROSION OR "WASHING OUT"OF
BACKFILL IN THE TOE OF BANK ANCHOR TRENCH, MATTING SHALL BE INSTALLED SO THAT IT WRAPS OVER THE DEAD STOUT STAKE AND
BACKFILL, THUS POSITIONING THE REMAINING MATTING FOR INSTALLATION UP THE STREAM BANK.
3. THE SLOPE AND/OR STREAM BANK SHALL BE PREPARED (GRADED, TILLED, SMOOTHED, ETC.) AND SEEDED AND MULCHED AS SPECIFIED BY THE
DESIGNER PRIOR TO THE PLACEMENT OF THE MATTING.
4. THE MATTING SHALL BE INSTALLED SO AS TO NOT BE IN TENSION, BUT BE PLACED NEATLY, FLUSH AGAINST THE SOIL, AND WITH NO GAPS OR
WRINKLES.
5. ANY MATTING OVERLAPS NECESSARY SHALL BE OF A LENGTH SPECIFIED BY THE MANUFACTURER OR AS OTHERWISE SPECIFIED BY THE
DESIGNER. ALSO, OVERLAPS SHALL BE ORIENTED IN A DOWN -SLOPE DIRECTION, DOWNSTREAM DIRECTION, OR OTHERWISE "SHINGLE-STYLE"IN
ACCORDANCE WITH THE DIRECTION OF THE DOMINANT EROSIVE ACTION SO THAT THE MATTING END IS PROTECTED AGAINST MOVEMENT.
6. THE FIELD OF THE MATTING OVER THE SURFACE OF THE SLOPE AND/OR STREAM BANK SHALL BE SECURED WITH MATTING STAKES OF A SIZE
AND TYPE, IN A PATTERN, AND WITH SPACING DIMENSIONS AS SPECIFIED BY THE MANUFACTURER OR AS OTHERWISE SPECIFIED BY THE
DESIGNER.
7. MATTING SHALL BE NEATLY SECURED AROUND ANY PROJECT STRUCTURES, STRUCTURE ARMS, AND/OR SILLS TO PREVENT ANY LOOSE OR
FRAYED EDGES.
8. THERE SHALL BE NO LOOSE ENDS OR UNSECURED MATTING ON THE COMPLETED WORK.
9. THE PLAN VIEW ILLUSTRATES A PERPENDICULAR PERSPECTIVE OF EACH SURFACE DEPICTED IN THE CROSS SECTION. THERE IS NO
FORESHORTENING OF THE STREAM BANK (OR ANY OTHER SLOPED SURFACE) IN THE PLAN VIEW.
x
TOP OF BANK ANCHOR
(SEE DETAIL, SHEET 2)
MATTING OVERLAP
(SEE DETAIL, THIS SHEET)
MATTING, TYPICAL
X5 (SEE NOTE 1)
zTOP OF BANK
MATTING STAKE TYPICAL
(SEE NOTE 6)
APPROXIMATE BASE
FLOW WATER LEVEL
TOE OF BANK
TOE OF BANK ANCHOR / t_v vv `DEAD STOUT
(SEE DETAIL, SHEET 2)J STAKE TYPICAL
(SEE DETAIL, THIS SHEET)
PLAN VIEW
(SEE NOTE 9)
6,41
MATTING OVERLAP DETAIL
DIMENSIONS (VALUES TO BE PROVIDED BY DESIGNER)
VARIABLE
VALUES
TYPICAL
UNIT
DESCRIPTION
X1
3'-6'
FT.
MATTING HEIGHT (SPECIFY RANGE IF HEIGHT VARIES)
X2
18"
FT. OR IN.
MATTING OVERLAP
X3
1 2" ABOVE
FT. OR IN.
MATTING RELATIONSHIP TO APPROXIMATE BASE FLOW
WATER LEVEL
X4
6'
FT. OR IN.
MATTING STAKE SPACING
X5
3'
FT. OR IN.
DEAD STOUT STAKE SPACING IN ANCHOR TRENCHES
X6
1 2"
IN.
TOP OF BANK ANCHOR TRENCH SETBACK FROM TOP OF
BANK
X7
6"
IN.
ANCHOR TRENCH DEPTH
X8
6"
IN.
ANCHOR TRENCH WIDTH
X9
1 ' - 6
IN.
DEAD STOUT STAKE LENGTH

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