20190865 Ver 1_Construction Drawings_20210519

Strickland, Bev
From: Worth Creech <[e-mail]>
Sent: Wednesday, May 19, 2021 3:47 PM
To: Todd Tugwell; Kim Browning; Davis, Erin B; Leslie, Andrea J; Haywood, Casey M CIV
(USA)
Cc: Wiesner, Paul; John Hamby; 'Grant Lewis'; Kenan Jernigan; Wilson, Travis W.; Stubbs,
Rebecca; Alex Baldwin; Ray Holz
Subject: [External] DMS 100122 Laurel Springs Site Crossing update
Attachments: 2021-05-17 LaurelSprings-100%ConstructionDrawings.pdf
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Report Spam.
Hello,
Through some discussions with our contractor, engineer and Travis Wilson, we have revised the main crossing on Fork
Creek from a rather oversized aluminum arched crossing to an engineered bridge with flood plain pipes. The bridge
eliminates the need to raise the driveway across the floodplain another 3' which would have created an artificial dam
across the entire floodplain. The new crossing will raise the existing road elevations 1/2 to 1', and will include 4- 18"
floodplain pipes. All flood modeling shows this is the best option. The stream will be fully restored under the bridge. We
have updated the plan sheets for construction (attached). Updates are the Cover Sheet, C5.01, C6.04, C6.05, and C8.08.
The bridge and footers are being designed by a separate NC Licensed structural engineer and will be presented in the as -
built.
Please let me know if you have any questions, Worth
Worth Creech I Restoration Systems, LLC
1101 Haynes St. Suite 211 I Raleigh, NC 27604
office: 919.334.9114 I mobile: [phone]
email: [e-mail]
i

SITE DATA TABLE
RIVER BASIN
FRENCH BROAD
8-DIGIT HUC
6010108
TOTAL DISTURBED AREA
27.53 AC
DMS PROJECT ID NO.
100122
FULL DELIVERY CONTRACT NO.
7890
USACE ACTION ID NO.
SAW-2019-00835
DWR PROJECT NO.
2019-0865
RFP NO.
16-007725
COORDINATE SYSTEM
NAD83 NORTH CAROLINA
STATE PLANES, US FOOT
ENHANCEMENT 1
MITIGATION SUMMARY
TRIBUTARY
PROPOSED LENGTH
FORK CREEK
2,341
LF
UT1
234
LF
UT2
858
LF
UT2A
25
LF
UT3
930
LF
UT3A
103
LF
UT4
653
LF
UT5
127
LF
SITE
VICINITY MAP
1" = 2000'
NC DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF MITIGATION SERVICES
CONSTRUCTION PLANS
PRESERVATION
GRAPHIC SCALE
0 150 300
LAUREL SPRINGS SITE
AVERY COUNTY
DATE: MAY 14, 2021
CONSERVATION
EASEMENT
RESTORATION ENHANCEMENT 1
RESTORATION
RESTORATION
600
1 inch = 300 ft.
RESTORATION LEVEL
RESTORATION
ENHANCEMENT I
PRESERVATION
ENHANCEMENT 2
RESTORATION
1‘17'r'"'
1
N
RESTORATION
SHEET INDEX
C1.00
C1.01
C1.02
C5.00 - C5.04
C5.05
C5.06 - C5.08
C5.09 - C5.10
C5.11 - C5.12
C5.13
C6.00 - C6.02
C6.03
C6.04 - C6.07
C6.08 - C6.16
C8.00 - C8.07
C8.08 - C8.09
L5.00 - L5.02
PROPERTY LINE
EASEMENT AND CONTROL POINTS EXHIBIT
INDEX OF SYMBOLS
PROJECT OVERVIEW
FORK CREEK PLAN AND PROFILE
UT 1 PLAN AND PROFILE
UT 2 PLAN AND PROFILE
UT3 PLAN AND PROFILE
UT 4 PLAN AND PROFILE
DRIVEWAY GRADING
EROSION CONTROL NOTES
EROSION CONTROL OVERVIEW
EROSION CONTROL PLAN
EROSION CONTROL DETAILS
STREAM DETAILS
CULVERT DETAILS
PLANTING
TOTAL DISTURBED AREA = 27.53 AC.
STREAM (LF)
3,296
RIPARIAN WETLAND (AC)
NON -RIPARIAN WETLAND (AC)
ENHANCEMENT II
PRESERVATION
274
446
REESTABLISHMENT
REHABILITATION
ENHANCEMENT
1,245
0.198*
7.656
1.845*
TOTALS
MITIGATION UNITS
5,261
4,231*
0.148*
9.847
3.688
*TOTAL STREAM MITIGATION UNITS INCLUDE UNITS FROM THE WIDER BUFFER TOOL
*WETLAND REHABILITATION, ENHANCEMENT, PRESERVATION, AND SOME RE-ESTABLISMENT ARE NOT CREDIT GENERATING.
MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
AXIOM ENVIRONMENTAL, INC.
218 SNOW AVENUE
RALEIGH, NC 27603
CONTACT: GRANT LEWIS
PHONE: [phone]
Axiom Environmental. Inc.
CLIENT
RESTORATION SYSTEMS, LLC
1101 HAYNES ST, SUITE 211
RALEIGH, NC 27604
CONTACT: WORTH CREECH
PHONE: [phone]
RESTORATION
SYSTEMS LLC
SEAL yr c
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GENERAL NOTES:
CONTROL POINT LOCATIONS
CONTROL POINT
NORTHING
EASTING
ELEVATION
100
829943 8048
1117697.5263
2951.36
101
829292.7246
1117983.3 841
2948.17
102
830447.4092
1118061.3990
2941.26
103
829453.9034
1118202.3079
2973.08
104
830965.0697
1118294.5656
2958.02
1. COORDINATE SYSTEM: NAD83 NORTH CAROLINA STATE PLANES, US FOOT
2. TOPOGRAPHY AND SPOT ELEVATIONS SHOWN ARE FROM AN ACTUAL FIELD SURVEY COMPLETED BY K2 DESIGN GROUP.
3. PLANIMETRICS, UTILITIES, INVERTS AND BUILDING INFORMATION (SHOWN FOR REFERENCE) WAS COMPLIED FROM AUTOCAD FILES PROVIDED TO MCADAMS
FROM OTHERS. MCADAMS MAKES NO WARRANTY ABOUT THE ACCURACY OF THE INFORMATION SHOWN PROVIDED BY OTHERS.
4, PRIOR TO CONSTRUCTION, THE SITE CONTRACTOR SHALL FIELD VERIFY ALL SUBSURFACE INFORMATION IN THE PROJECT AREA TO ENSURE ITS ACCURACY AND
DETERMINE ITS ACTUAL FIELD LOCATION.
r
u
GE
233U
30
Know what's below.
CaII before you dig.
cF
104
CE
CE
I m
I
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1
J
%} cF
3a _
_ 3C
30 30
cF
102
cF
CE
3D
CE
30
30
CE
CE
30
CE
m
CE'
33
CE
Cf
CE
CONTRACTOR SHALL NOTIFY "NC811" (811) OR (1-800-632-4949) AT
LEAST 3 FULL BUSINESS DAYS PRIOR TO BEGINNING CONSTRUCTION
OR EXCAVATION TO HAVE EXISTING UTILITIES LOCATED.
CONTRACTOR SHALL CONTACT ANY LOCAL UTILITIES THAT PROVIDE
THEIR OWN LOCATOR SERVICES INDEPENDENT OF "NC811".
REPORT ANY DISCREPANCIES TO THE ENGINEER IMMEDIATELY.
r CE
U
103
m ��J
3C " 33
CE
100
CE
cE
30
CE
dj
CE
I
I
CE
m
30
GRAPHIC SCALE
0 10o 200 400
1inch =200ft.
101
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MCADAMS
The John R. McAdams Company, Inc
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
G2S
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19010-ESMT
RAS
RHW
1" = 60'
02.18.2020
CONSERVATION EASEMENT
AND CONTROL POINTS EXHIBIT
C1.00

1
LEGEND AND SYMBOLS
EROSION CONTROL LEGEND
L0 LD LIMITS OF DISTURBANCE
- -- EXISTING PROPERTY LINE
/ / / DEMOLITION LINE
CE
CE
250
252
250
252
jp
4, W W
W W * 44
4 4,
.4, W .Y W 44,
PROPOSED CONSERVATION EASEMENT
EXISTING STORM DRAINAGE
EXISTING STREAM CENTERLINE
EXISTING DRAINAGE TILE
PROPOSED STREAM CENTERLINE
MAJOR CONTOUR
MINOR CONTOUR
EXISTING MAJOR CONTOUR
EXISTING MINOR CONTOUR
PROPOSED LOG CROSS VANE
PROPOSED LOG VANE
PROPOSED STEP SILL
PROPOSED STEP POOL
PROPOSED DROP STRUCTURE
CONSTRUCTED RIFFLE
WETLAND REHABILITATION AREA
WETLAND RE-ESTABLISHMENT AREA
WETLAND PRESERVATION AREA
MARSH TREATMENT AREA
SF - SF - SF
,111111'
CONSTRUCTION ENTRANCE
HAUL ROAD
SILT FENCE
STAGING/STOCKPILE AREA
SILT FENCE OUTLET
PUMP AROUND PUMP
CHANNEL PLUG
ROCK FLOODPLAIN OUTLET
1111IlI.R.'.
MC _.MS
The John R. McAdams Company, Inc
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE NTS
DATE 02.18.2020
LEGEND AND
SYMBOLS
C1.01
1

FORK CREEK
ROAD CROSSING
FORK CREEK
WETLAND REHABILITATION,
AREA (TYP.) ----,\
WISE, EUGENE G.
PARCEL NO. 181300803670
RESTORATION SYSTEMS, LLC
PARCEL NO. 181200891385
MARSH TREATMENT AREA (TYP.)
— WETLAND PRESERVATION
AREA (TYP.)
0
GRAPHIC SCALE
75 150
1 inch = 150 ft.
300
UT2 ROAD CROSSING
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MCA DAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS 1 LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AX119000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1" = 150'
DATE 02.18.2020
PROJECT
OVERVIEW
C1.02

PROPERTY LINE
PROPOSED CONSERVATION
EASEMENT (TYP.)
NI-
STA. = 0+00.00
ELEV. = 2964.80
2960
2952
ND ENHANCEMENT 1
BEGIN RESTORATION
STA. = 0+91.26
ELEV. = 2962.71
o
co
Z
w
rn�
N U
11 Z
a
z
LI]w
Z
w
m
0+00
HILL SLOPE TO BE
•
PROPOSED
_gyp STREAM C/L
��q (TYP.)
(TYP
PROPOSED TOP
OF BANK (TYP.)
LOG CROSS VANE #1
w co
N
w
U 0,
Z
Q o
2
W 11
oQ
wv~i
N
0)
N
II
w
WETLAND
REHABILITATION
AREA (TYP.)
LOG CROSS VANE #1
POOL (TYP.)
LOG CROSS VANE #2
1 +00
2+00
8gs
696?
/ / /0\
LIMITS OF DISTURBANCE (TYP.)
PROPOSED GRADE
ALONG PROPOSED
CENTERLINE (TYP.)
LOG VANE #3
LOG CROSS VANE #2
296.c
DRAINAGE TILE TO BE
REMOVED (TYP.)
996e
LOG
LOG CROSS VANE #4
she.
WETLAND
RE—ESTABLISHMENT.
(TYP.)
-'" EXISTING 18" CMP
EXISTING GRADE
ir ALONG PROPOSED
CENTERLINE (TYP.)
CROSS VANE #4
3+00
RIFFLE SECT]
LOG CROSS VANE #5
DN (TYP.)
4+00
a,
r
EXISTING BUILDING
st
�r f
MT
EATMENT
atBz - AREA 1 (TYP.) ,,
2960
cLOG CROSS VAJE #5
5+00
2952
5+50
FORK CREEK STRUCTURE LOCATIONS
STRUCTURE TYPE
STATION
ELEVATION
LOG CROSS VANE #1
0+91.26
2962.71
LOG CROSS VANE #2
2+05.98
2960.32
LOG VANE #3
2+80.98
2958.79
LOG CROSS VANE #4
3+65.85
2957.30
LOG CROSS VANE #5
4+97.62
2954.15
0
GRAPHIC SCALE
30 60
120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.
VICINITY MAP
1" = 1000'
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MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
EIS
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60'/1"=50
DATE 02.18.2020
PLAN AND PROFILE
FORK CREEK
STA. 00+00 TH R U STA. 5+50
C5.00

PR.P. 1 F •ODP
SEE SHEET C8.08
EXISTING STREAM C/L
EXISTING BUILDING
-
UT4
PROPERTY LINE
10'X10' CLASS B PR
RIPRAP DISSIPATION PADS SEE SHEET C8 08
DRAINAGE TILE TO BE/
REMOVED (TYP.)
.
'
PROPOSED BRIDGE
2950
LOG CROSS VANE
:LOG CROSS VANE#7.
2940
2937
5+50 6+00
7+00
EXISTING 72" CMP
TO REMAIN
CONTRACTOR TO RESTORE
CHANNEL BOTTOM TO INVERT ---
OF EXISTING CULVERT
EXISTING CHANNEL TO BE
BACKFILLED DOWNSTREAM
- OF CHANNEL CONNECTOR
WETLAND
PROPOSED CONSERVATION
EASEMENT (TYP.)
LOG CROSS VANE #8 -
CONSTRUCTED —
RIFFLE (TYP.)
DRAINAGE TILE TO BE
REMOVED (TYP.)
(TYP.)
REHABILITATION AREA
P,ROPOSED! GRADE ALONG
PROPOSED: CENTERLINE. (TYP)
rEXISTING GRADE ALONG:
PRQPOSI;D CENTERLINE (TYP.)
RIFFLE SECTION (TYP.)
„LQG CROSS VANE #11
POOL (TYP,)
LCG CROSS' VANE #8
LO.c CROSS VANE #9
LOG CROSS VANE 1110
8+00
9+00
10+00
2950
2940
2937
1 1 +00
r'n
LIMITS OF DISTURBANCE (TYP.)
f
•
LOG CROSS VANE #10
LOG CROSS VANE #11
WETLAND
RE—ESTABLISHMENT AREA
(TYP.)
FORK CREEK STRUCTURE LOCATIONS
STRUCTURE TYPE
STATION
ELEVATION
LOG CROSS VANE #6
6+24.77
2950.95
LOG CROSS VANE #7
7+65.04
2947.68
LOG CROSS VANE #8
9+14.60
2944.14
LOG CROSS VANE #9
9+67.85
2942.70
LOG CROSS VANE #10
10+34.80
2941.22
LOG CROSS VANE #11
10+98.31
2939.79
GRAPHIC SCALE
TOTAL DISTURBED AREA = 27.53 AC.
VICINITY MAP
1"=1000'
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MCADAMS
I he John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919, 361. 5000
fax 919, 361. 2269
license number C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
1912,1STARATTON,i
rSYSTEM•S:i L.12(;
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60' / 1"=100'
DATE 05.14.2021
PLAN AND PROFILE
FORK CREEK
STA. 05+00 TH R U STA. 11+00
C5.01

o
LIMITS OF DISTURBANCE (TYP.)
WETLAND '4
RE—ESTABLISHMENT AREA
(TYP.)
DRAINAGE TILE TO BE
; REMOVED (TYP.)
EXISTING CHANNEL
TO BE BACKFILLED
PROPOSED CONSERVATION
EASEMENT (TYP.)
PROPOSED TOP
OF BANK (TYP.)
CONSTRUCTED
RIFFLE (TYP.)
LOG CROSS VANE #12
DRAINAGE TILE TO BE
REMOVED (TYP.)
1
r
LOG CROSS VANE #13
a a
T� a
91 N T
T —
LOG CROSS VANE #15
•
EXISTING BUILDING
WETLAND
REHABILITATION AREA
(TYP.)
EXISTING CHANNEL
TO BE BACKFILLED
FORK CREEK STRUCTURE LOCATIONS
STRUCTURE TYPE
STATION
ELEVATION
LOG CROSS VANE #12
11+46.66
2938.41
LOG CROSS VANE #13
13+34.14
2934.26
LOG CROSS VANE #14
14+55.76
2931.61
LOG CROSS VANE #15
15+71.19
2928.57
GRAPHIC SCALE
0 30 60 120
� 4 �
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.
2940
LOG CROSS VANE #12
............................
ALONG PROPOSED
I
POOL
(TYP.)
_
—
fTEF�LIFI1(TYPT
`
EXISTING
ALCNG
CENTERLINE
--
GRADE
PROPOSED
(TYP.)
RIFFLE SECTION
(TYP.)
LOG CROSS VANE #13
LOG CROSS
VANE #14
LOG CROSS
VANE #15
2940
VICINITY MAP
1"=moo.
2930
2925
11+00
12+00
13+00
14+00
15+00
16+00
2930
2925
1 6+50
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MCADAMS
The John R. McAdams Company, Inc
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS IEEC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60' / 1"=60'
DATE 02.18.2020
PLAN AND PROFILE
FORK CREEK
STA. 11+00 THRU STA. 16+50
C5.02

EXISTING CHANNEL
TO BE BACKFILLED
DRAINAGE TILE TO BE
REMOVED (TYP.)
`- �-
LOG CROSS VANE #16 —
MCADAMS
2920
2914
MARSH
TREATMENT
AREA 2 (TYP.)
PROPERTY UNE
EXISTING CHANNEL
TO BE BACKFILLED z LIMITS OF DISTURBANCE
5 �` �-f-
WETLAND
RE-ESTABLISHMENT AREA
(TYP.)
a
PROPOSED
STREAM C/L (TYP.)
a
LOG VANE #19
EXISTING 24'RCP TO BE
REMOVED
9t6Z
UT2J
a
1
r
a
a
a
oL
PROPOSED CONSERVATION
EASEMENT MP.)
J
LOG CROSS VANE #17
16+50 17+00
The John R, McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919, 361, 5000
fax [phone]
license number: C-0293, C-187
www.mcadamsco,com
18+00
TYr.)
PROPOSED GRADE
ALONG PROPOSED
CENTERLINE :TYP.)
LOG CROSS VANE #18
19+00
EX STING GRADE
ALDNG PROPOSED
CENTERLINE (TYP.)
20+00
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RIFFLE SECTION
(TYP. )
21+00
LOG VANE #19
r
2920
2914
22+00
Axiom Environmental. Inc.
a
FORK CREEK STRUCTURE LOCATIONS
STRUCTURE TYPE
STATION
ELEVATION
LOG CROSS VANE #16
16+51.85
2927.11
LOG CROSS VANE #17
17+57.52
2923.95
LOG CROSS VANE #18
19+71.06
2919.30
LOG VANE #19
21+27.89
2915.79
GRAPHIC SCALE
30 60
120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60' / 1"=60
DATE 02.18.2020
11111
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PLAN AND PROFILE
FORK CREEK
STA. 16+50 THRU STA. 22+00
C5.03
4
'1

LOG CROSS VANE #20
EXISTING CHANNEL
TO BE BACKFILLED
WETLAND PROPERTY LINE
RE—ESTABLISHMENT
AREA (TYP.)
l
>� -
LOG CROSS VANE #20
2910
2907
22+00
CONSTRUCTED
RIFFLE (TYP)-71
i
OVERHEAD
UTILITY
EASEMENT
PROPOSED DRIVEWAY CULVERT
(SEE SHEET C5.13)
PROPOSED TOP
OF BANK (TYP.)
EXISTING 72" CMP
TO REMAIN
END R STORA ION
STA. = 24+00.93
ELEV. = 2909.72
EXISTING STREAM C/L
DROP STRUCTURE #22
LOG CROSS VANE #21
PROPOSED
STREAM C/L
{TYP.)
WETLAND
REHABILITATION AREA
(TYP.)
"(7'z I
ti LIMITS OF DISTURBANCE (TYP.)
PROPOSED GRADE
ALONG PROPOSED
CFNTFRI I♦JF (TYP
POOL (TYP.)
LOG CROSS VANE #21 —
DROP STRLCTURE #22
EXISTING GRADE
ALONG PROPOSED
z,,
o,
Th FLE SECTION
/ — l& IN II
E
23+00
CENTERLINE (TYP.)
PROPOSED CONSERVATION
EASEMENT (TYP.)
2910
2907
24+0024+31.20
gij
MCADAMS
ne ions n. IvILHuams company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
.RESTORATION
SYSTEMS
Axiom Environmental, Inc.
FORK CREEK STRUCTURE LOCATIONS
STRUCTURE TYPE
STATION
ELEVATION
LOG CROSS VANE #20
22+20.69
2914.34
LOG CROSS VANE #21
23+28.47
2911.26
DROP STRUCTURE #22
23+57.16
2911.26
GRAPHIC SCALE
0 30 60
120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.J
VICINITY MAP
1" = 1000'
ss 1 ••••� -v ►.1 i
es'7
1.
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. :
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60' / 1"=50'
DATE 02.18.2020
PLAN AND PROFILE
FORK CREEK
STA. 22+00 THRU STA. 24+31.20
C5.04

WETLAND
RE—ESTABLISHMENT AREA
(TYP.)
PROPERTY LINE
LIMITS OF DISTURBANCE (TYP.)
PROPOSED CONSERVATION
EASEMENT (TYP.) �• �;+:l;
LOG CROSS VANE #7
WETLAND
REHABILITATION AREA
(TYP.)
DEGIN RESTORATION
STA. = 0+00.00
ELEV. = 2947.15
DRAINAGE TILE TO BE
REMOVED (TYP.)
PROPOSED TOP
OF BANK (TYP.)
EXISTING 38" CMP
LOG CROSS VANE #1
LOG CROSS VANE #2 PROPOSED
— LOG CROSS VANE #3 \ STREAM C/L
(TYP,)
EXISTING
OE BACKFILLEDXISTING CHANNEL
•
2950
LOG CROSS VANE #1
z
2938
0+00
` EXISTING STREAM C/L
EXISTING GRADE
ALONG PROPOSED
CENTERLINE (TYP.)
LOG CROSS VANE
POOL (TYF
LOG C.
#2
ND RESTORATIO
N
STA. = 2+33.82
ELEV. = 2939.96
CONSTRUCTED
�4 RIFFLE (TYP.)
RIFFLE SECTION (TYP.)
PROPOSED GRADE
ALONG PROPOSED
CENTERLINE (TYP.)
LOG CROSS VANE #5
LOG CROSS VAN
OG CROSS VANE #4
R05S VANES
LOG CROSS VANE #7
1 +00
#6
2+00
2950
2940
2938
2+46.44
FORK CREEK
UT1 STRUCTURE LOCATIONS
STRUCTURE TYPE
STATION
ELEVATION
LOG CROSS VANE #1
0+04.95
2946.98
LOG CROSS VANE #2
0+29.40
2946.12
LOG CROSS VANE #3
0+53.52
2945.19
LOG CROSS VANE #4
0+91.44
2944.11
LOG CROSS VANE #5
1+26.99
2942.94
LOG CROSS VANE #6
1+58.26
2941.85
LOG CROSS VANE #7
1+98.64
2940.67
GRAPHIC SCALE
0 30 60
120
1 inch = 60 ft.
t TOTAL DISTURBED AREA = 27.53 AC.
VICINITY MAP
1" = 1000'
Ir
37 r
SE� =
049073AL �\
-
MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919, 361. 5000
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I-LLC
Axiom Environmental, Inc,
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60' / 1"=50'
DATE 02.18.2020
PLAN AND PROFILE
UT1
STA. 00+00 TH R U STA. 2+46.66
C5.05

UT 2A
PRESERVATION
STA. 00+00 TO STA. 00+25
BEGIN PRESERVATION
STA. = 0+00.00
ELEV. = 3036.50
/ I /
LIMITS
f f �
N1 PR RVATI.N
BEGIN ENHANCEMENT 2
STA. = 1+83.54
ELEV. = 2995.17
\ PROPOSED TOP
OF BANK (TYP.)
WETLAND PRESERVATION
AREA (TYP.)
33
OF DISTURBANCE (TYP.)
PROPOSED�
STREAM C/L
(TYP.)
EXISTING STREAM C/L
PROPOSED CONSERVATION
EASEMENT (TYP.)
31 \
30
j•
sa
3030
3020
3010
3000
2990
2980
2970
J
aLo
v
n0
la II
im W
0+00
1 +00
U)w
mW
2+00
EXISTING GRADE
AL -OM PR 0 roscl)
CENTERLINE (TYP.)
3+00
3030
3020
3010
3000
2990
2980
2970
3+50
i
GRAPHIC SCALE
0 30 60
120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.
VICINITY MAP
1" = 1000'
v+
y
I SEAL �r:
049073
. it, E,.
\s.
r
... . A"III rI
MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco,com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
•RESTORATION"
SYrrSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY
DRAWN BY
SCALE
DATE
RAS
RHW
1"=60' / 1"=40'
02.18.2020
PLAN AND PROFILE
UT2
STA. 00+00 THRU STA. 03+50
C5.06

PROPOSED TOP
OF BANK (TYP.)
//
F '
' i , /
PROPOSED I
STREAM CA (TYP.•
)
END ENHANCEMENT 2
BEGIN RESTORATION ,
STA. = 3+81.66
f ELEV. = 2964.35
STEP POOL #9
f
STEP POOL #1
STEP POOL #8
STEP POOL #7
STEP POOL #6
-STEP POOL #2
.4i,' - ' f „._ c * •
y STEP POOL {J3
STEP POOL #4
'''A STEP POOL #5
n _
EXISTING STREAM C/L
'"'� 410
WETLAND PRESERVATION
AREA (TYP.)
� l
PROPOSED CONSERVATION
EASEMENT (TYP.)
z
LIMITS OF DISTURBANCE (TYP.)
CONSTRUCTED
RIFFLE (TYP.)
f'1- OVERHEAD
UTILITY
EASEMENT
UT2 STRUCTURE LOCATIONS
STRUCTURE TYPE
STATION
ELEVATION
STEP POOL #1
3+78.06
2964.95
STEP POOL#2
4+51.14
2954.27
STEP POOL#3
4+66.26
2952.28
STEP POOL#4
4+83.20
2949.34
STEP POOL#5
4+95.32
2947.41
STEP POOL#6
5+08.43
2945.47
STEP POOL#7
5+16.62
2943.68
STEP POOL#8
5+32.89
2941.83
STEP POOL #9
5+45.81
2939.89
GRAPHIC SCALE
0 30 60 120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.
STEP P00
2970
EXISTING GRADE
ALONG PROPOSED
2970
#1
2960
II
CENTERLINE (TY'.
PROPOSED
ALONG
CENTS
P00
GRAB
PROPOSED
INE (TY•.)
(TYP.)
2960
2950
I END ENHANCEMe
! STA. = 3+81.6e
II ELEV. = 2964.31I
L..orr; A occT/Nn A'fl
RI'
I'
FLE SEC
TEP PO*L
STEP •00L
STE
ION (TYP
#2
#3
POOL #
2950
2940
•
POOL #5
II
!
t
I1
1
STEP POI
STEP P(
STEP
2940
2937
STEP POOL #
1
I
2937
3+50 4+00
5+00 5+50
L #6
OL #7
POOL #8
VICINITY MAP
1" = 1000'
MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY
DRAWN BY
SCALE
DATE
RAS
RHW
1"=60' / 1"=100'
02.18.2020
PLAN AND PROFILE
UT2
STA. 03+50 TH R U STA. 05+50
C5.07

OVERHEAD
UTILITY
EASEMENT
PROPOSED ELLIPTICAL CMP
SPAN = 3.167'
RISE = 2'
LENGTH = 40 LF
INV IN = 2931.15
INV OUT = 2927.78-
EXISTING 12" CPP
TO BE REMOVED
STEP POOL #10
STEP POOL #11
4� `
/ STEP SILL #13 ' i�'�
LOG CROSS VANE #12 1 i�' lel
•-1/ CONSTRUCTED PROPOS i '' ` �`�''''' ,,s
/ RIFFLE (TYP.) STREAM C
WETLAND PRESERVATION
NO FLOODPLAIN CULVERTS ARE
IPROPOSED FOR FOR THE UT2
CROSSING DUE TO THE STEEPNESS
AND LACK OF DEFINED FLOODPLAIN
TOPOGRAPHY IN THE TRIBUTARY.
STEP POOL #10
S
2940
AREA (TYP.)
(TY
1 A
STEP POOL #11
STEP SILL #14 , �•
EXISTING STREAM CA
STEP SILL #15
PROPOSED TOP
OF BANK (TYP.)
LOG CROSS VANE #16 i
LOG CROSS VANE #17
'i►�
/L ` LOG CROSS VANE #19
LOG CROSS VANE #18
•JJJ
MATCH NE SE MEET C5.❑
I 1
i PROPOSED CONSERVATION
EASEMENT (TYP.) /
PROPOSED ELLIPTICAL RCP
F
F F F
2940
`
2930
+,
LOG
VANE
t
CROSS
#12
\
_.
UT2 ROAD CROSSING
EXISTING GRADE
ALONG PROPOSED
CENTERLINE
pROPOSFf+ GpADc
(TYP,)
2930
ILL STEP
PROPOSED
ELLIPTI:AL
RIFFLE
2920
#13
RCP
SECTION
SILL
(TYP.)
STEP #14
r1
ALONG PROPOSEC
CENTERLINE (TYP.1
1 SILL STEP
LOG CROSS
LOG CROSS
LOG
#15
VANE #16
VANE #17
CROSS VANE #18
0
ate;
0 +
2920
2911
. `
LOG CROSS VANE
LOG CROSS
----
#19 1
VANE #20 -----4.'
r
END RE
�STA.
N
5+50 6+00
7+00
8+00
9+-36.39
- 30
CROSS VANE #20
I
END RESTORATION
STA. = 9+25.92
ELEV. = 2912.39
UT2 STRUCTURE LOCATIONS
STRUCTURE TYPE
STATION
ELEVATION
STEP POOL #10
5+56.48
2938.02
STEP POOL #11
5+71.61
2935.87
LOG CROSS VANE #12
5+84.29
2934.35
SILL STEP #13
6+22.88
2932.22
SILL STEP #14
6+91.20
2924.52
SILL STEP #15
7+05.87
2923.09
LOG CROSS VANE #16
7+34.03
2920.62
LOG CROSS VANE #17
7+50.18
2919.12
LOG CROSS VANE #18
7+63.23
2917.93
LOG CROSS VANE #19
8+88.87
2914.75
LOG CROSS VANE #20
9+04.98
2913.76
GRAPHIC SCALE
0 30 60
120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.
SEAL �•�
049073R�
MCADAMS
The John R. McAdams Company, Inc
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60' / 1"=100'
DATE 02.18.2020
PLAN AND PROFILE
UT2
STA. 05+50 THRU STA. 9+36.39
C5.08

i
PRS RV TI
STA. = 0+30.56
ELEV. = 3042.00
WETLAND PRESERVATION
AREA (TYP.)
1 PROPOSED TOP
OF BANK
(TYP.)
■
LIMITS OF DISTURBANCE (TYP.)
PROPOSED
STREAM C/L (TYP.)
UT 3A
PRESERVATION
STA. 00+00 TO STA. 01+03
S RVATION
BEGIN ENHANCEMENT 2 PROPOSED CONSERVATION
STA. = 2+95.70 � EASEMENT (TYP.)
ELEV. = 2989.69
\1 \
/J JZ
NHAN M NT
STA. = 5+44.28
ELEV. = 2961.85
OVERHEAD
UTILITY
EASEMENT
i
0
GRAPHIC SCALE
30 60
120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.
3040
3030
3020
3010
3000
2990
2980
29/0
2960
N
1-
2
w
Id O
W tR
N
7' —�
+NSN
I-
0
N Ld 1 CC 40
II
CO W
co
—
FXISTIN( GRADE
"t..
a
�av
1
d0
0z
f ALONG PROPOSED
��¢
N
0
x
_
_
CENTERLINE (TYP.)
ll0La
II
Ili
EI
�— —'
'�f-z
Y
ut�
— —
- _
—
ffW
.-
I.J
N
m W
— — —
0+00
1 +00
2+00
3+00
4+00
5+00
3040
3030
3020
3010
3000
2990
2980
29/0
2960
5+50
VICINITY MAP
1" = 1000'
PROPOSED GRADE
ALONG PROPOSED
CENTERLINE (TYP.)
\%%•,111
14.4
.1'
rs
• r
SEAL p
049073 n crLA
•..� .tic r r+• c:;.
" I CCAu1y'C.Jl��*�
1.111
McADAMs
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919, 361. 5000
fax [phone]
license number: C-0293, C-187
www, mcada msco. com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60'/ 1"=50
DATE 02,18.2020
PLAN AND PROFILE
UT3
STA. 00+00 TH R U STA. 05+50
C5.09

OVERHEAD
UTILITY
EASEMENT
C 1,
SILL STEP #1
SILL STEP #2
W▪ ETLAND
PRESERVATION
AREA (TYP.)
SILL STEP #3 r- ^�
PROPOSED TOP
• SILL STEP #4 OF BANK (TYP.)
SILL STEP #5 •
SILL STEP #6
SILL STEP #7
• LOG CROSS VANE #8
LOG CROSS VANE #9
•
EXISTING 12" CMP
TO BE REMOVED
START ENHANCEMENT 1
STA. = 5+85.71
ELEV. = 2956.29
SILL STEP #11
,4\
LOG CROSS VANE #17
CONSTRUCTED
RIFFLE (TYP.)
SILL STEP #13
SILL STEP #12
5/
PROPOSED CONSERVATION
EASEMENT (TYP.)
WETLAND RE-ESTABLISHMENT
AREA (TYP.)
/ /
EXISTING STREAM C/L
/ 1 /
LOG CROSS VANE #16
LOG CROSS VANE #15
/
LOG CROSS VANE #14
PROPOSED o
STREAM C/L ,
(TYP.)
SILL STEP #10
END ENHANCEMENT 1
START RESTORATION
STA. = 7+68.70
ELEV. = 2940.15
�k / !I+
,,....111L
\ii
-1)LIMITS OF DISTURBANCE (TYP )
111 , / I•1
END RESTORATION `
STA. = 10+01.66
ELEV. = 2929.22
FORK CREEK
WETLAND
REHABILITATION AREA
(TYP.)
F F F
F F F
F Fcg6zF
F F F F F F
F F F F F F
1I/
GRAPHIC SCALE
0 30 60 120
1 inch = 60 ft.
2960
2950
2940
2930
2927
1
-ST
-4--
.-
--
E STEP 77
SILL STEP #3
SILL STEP
SILL STE
I SILL S
I
'4
#5
-EP #6
�-N-LOG
,rimz
.4rnd
`fix
II
kz
II
SI
\
1
�-
w;ILL
r
_POQL__LTYP.)
.L STEP #7
CROSS VANE
-LOG CROSS VANE
SILL
•�a�IL
#8
#9
STEP #10
STEP #11
- SILL STEP 12
mi.")L
RIFFLE:
EX
ALONG
CENTERLINTYP.
SECTION (TYP.)
STING GRADE
IL---____
1
f
1
INHANCEMENT 1
7+68.70/ -1
�,Nj
ll�
ST 1 '
LOG CROSS
LOG CROSS
`
V
ze
VANE #14 O`r'u
VANE #15 ��i
N
w
I
0i4-Li
w(II..J.l
'V
II
PROPOSED
zap'=
n
PROPOSED FADE
LOG
CRI
SS
'ANE
#1'
AL •
CE
NG
TERLINE
PRO'
.SEIF
TYP.)
LOIG
5+50 6+00
7+00
8+00
9+00
2960
2950
2940
2930
2927
CROSS VANE #17
101f O29.94
UT3 STRUCTURE LOCATIONS
STRUCTURE TYPE
1
STATION
ELEVATION
SILL STEP #1
5+56.11
2960.19
SILL STEP #2
5+71.11
2957.91
SILL STEP #3
5+86.10
2956.23
SILL STEP #4
6+00.88
2953.87
SILL STEP #5
6+16.77
2951.55
SILL STEP #6
6+30.53
2949.74
SILL STEP #7
6+55.33
2947.33
LOG CROSS VANE #8
6+78.62
2945.33
LOG CROSS VANE #9
6+89.29
2944.67
SILL STEP #10
7+52.10
2941.60
SILL STEP #11
7+64.16
2940.75
SILL STEP #12
7+80.77
2938.94
SILL STEP #13
8+01.55
2936.58
LOG CROSS VANE #14
8+31.37
2934.56
LOG CROSS VANE #15
8+55.02
2933.67
LOG CROSS VANE #16
8+68.64
2932.88
LOG CROSS VANE #17
9+85.95
2929.63
TOTAL DISTURBED AREA = 27.53 AC.
VICINITY MAP
1" = 1000'
- SEAL 9�'
049073 �.`
'i;'Qi
� '
'''
MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www. mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE
DATE
1"=60' / 1"=100'
02.18.2020
PLAN AND PROFILE
UT3
STA. 05+50 THRU STA. 10+29.24
C5.10

N P
STA. = 0+32.08
ELEV. = 2991.91
UT 5
/r I �_ 4r `U PRESERVATION
(—1_ _— STA. 00+00 TO STA. 00+60
WETLAND PRESERVATION
.—P. 7 AREA (TYP.)
1
�` ` ` —_ PROPOSED TOP
-----OF BANK (TYP.)
N N\ r7fi N
��
PROPOSED CONSERVATION
EASEMENT (TYP.)
UT 5
PRESERVATION
STA. 00+00 TO STA. 00+67
PROPOSED
STREAM C/L
(TYP.)
-tom 9\
LIM1ITS OF DISTURBANCE (TYP.)
) I
l I
PROPOSED CONSERVATION
EASEMENT (TYP.)
cY
r�V
3030
3020
.5010
3000
2990
2980
2970
2960
2950
ID
N
M
ID
=r
0)
4.1
ACV
II
0+00 1+00 2+00 3+00
3030
4+00
EXISTING GRADE
ALUNG F'KUPUSEU
GENTERLrNE (T(P,)
3020
30f 0
.5000
2990
2980
29 /0
5+00
2960
^' 2950
5+50
GRAPHIC SCALE
0 30 60
120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC. 1
VICINITY MAP
1" = 1000'
MCADAMS
The John R, McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60'/1"=50
DATE 02.18.2020
PLAN AND PROFILE
UT4
STA. 00+00 THRU STA. 05+50
C5.11

END PRESERVATION
BEGIN RESTORATION
STA. = 5+72.77
ELEV. = 2955.41
EXISTING STREAM C/L
LIMITS OF DISTURBANCE (TYP.)
PROPOSED CONSERVATION
EASEMENT (TYP.)
-r
EXISTING BUILDING
CONSTRUCTED
RIFFLE (TYP.) _ ,
PROPOSED
STREAM C/L (TYP.)
l PROPOSED
TOP OF BANK
(TYP.)
LOG CROSS VANE #
i o \ ■ 1 ♦�J
LOG CROSS VANE #2
/LOG CROSS VANE #3
LOG CROSS VANE #4 a5 ea
1.4' ti
2(
WETLAND RE—ESTABLISHMENT
AREA (TYP.)
FORK CREEK
6y61'
/
WETLAND
REHABILITATION AREA
(TYP.)
STA. = 6+84.81
ELEV. = 2954.38
EXISTING GRADE /
ALONG PROPOSED
CENTERLINE (TYP.)
LOG C
2952
LOG CROSS VANE #4
m
w'A
a II
�
II,_ LOG
= •
CROSS VANE #3 �Xnt
N
l7 z
LtN
POOL (TYP.)vr �
J �� III
II
�—_-
�¢
_ \
�Nw
BOSS VANE #1
LOG CROSS VANE
#2 RIFFLE SECTION (TYP.)
PROPOSED GRADE
ALONG PROPOSE)
•CENTERLINE (TYP.)
5+50
6+00
2952
74408.80
UT4 STRUCTURE LOCATIONS
STRUCTURE TYPE
STATION
ELEVATION
LOG CROSS VANE #1
5+99.33
2955.33
LOG CROSS VANE #2
6+22.41
2955.25
LOG CROSS VANE #3
6+50.54
2955.15
LOG CROSS VANE #4
6+70.50
2954.77
0
GRAPHIC SCALE
30 60
120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.
VICINITY MAP
1" = 1000'
- •� SEAL ��'
0490731 \
■ AI
MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax 919, 361. 2269
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60' / 1"=40'
DATE 02.18.2020
PLAN AND PROFILE
UT4
STA. 05+50 TH R U STA. 07+08.80
C5.12

CONSTRUCT BERM TO
DIRECT RUNOFF INTO THE
UT2 DESIGN CHANNEL
30 30
MCADAMS
0
30
30
I he John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www,mcadamsco.com
PROPOSED CONSERVATION EASEMENT
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
LIMITS OF DISTURBANCE /
2
PROPERTY LINE
NCDOT CLASS B RIP RAP
OUTLET PROTECTION TO
CREATE DIFUSE FLOW
3'(W) X 6'(L)
Axiom Environmental, Inc.
r
GRAPHIC SCALE
0 15 30
60
1 inch = 30 ft.
I TOTAL DISTURBED AREA = 27.53 AC.
i
OVERHEAD UTILITY
EASEMENT
r
CONSTRUCT BERM TO PREVENT
RUNOFF FROM BYPASSING THE
PROPOSED DRIVEWAY CULVERT
PROPOSED 12" HDPE CULVERT
LENGTH = 40'
INV. IN: 2913.0'
INV. OUT: 2912.0'
MIN. 1' COVER OVER CULVERT
BENEATH ROAD BED
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PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-P1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60' / 1"=100'
DATE 02.18.2020
DRIVEWAY
GRADING
C5.13
1

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GENERAL NOTES:
1. CONTRACTOR SHALL OBTAIN ALL NECESSARY LICENSES AND PERMITS REQUIRED TO COMPLETE THE
WORK INCLUDED IN THE CONTRACT DOCUMENTS AT THE CONTRACTOR'S EXPENSE.
IT IS THE CONTRACTOR'S RESPONSIBILITY TO VERIFY THAT THEY AND THEIR SUBCONTRACTOR'S HAVE THE
CORRECT/MOST UP-TO-DATE PLANS AVAILABLE.
CONTRACTOR SHALL GIVE MINIMUM 72 HOURS NOTICE TO AVERY COUNTY AND THE PROJECT ENGINEER
PRIOR TO CONSTRUCTION.
ALL WORK WITHIN JURISDICTIONAL BOUNDARIES (WETLAND AND STREAMS) SHALL BE PERFORMED IN
STRICT ACCORDANCE WITH APPROVED NATIONWIDE PERMIT NO. SAW-2019-00835
CONSTRUCTION OPERATIONS SHALL BE CARRIED OUT IN SUCH A MANNER THAT EROSION AND WATER
POLLUTION IS MINIMIZED.
CONTRACTOR SHALL MINIMIZE DISTURBANCE TO EXISTING BUFFER VEGETATION AND CONSTRUCTION
CORRIDOR TO THE MAXIMUM EXTENT PRACTICAL.
THERE MAY BE WETLANDS WITHIN THIS SITE. IT IS THE OWNER'S RESPONSIBILITY FOR WETLANDS
JURISDICTION AND PERMIT DISTURBANCE PRIOR TO ANY GRADING ACTIVITY.
IF THE CONTRACTOR, IN THE COURSE OF WORK, FINDS ANY DISCREPANCIES IN THE PLANS OR NOTES
GIVEN BY THE PROJECT ENGINEER, IT SHALL BE HIS/HER DUTY TO IMMEDIATELY INFORM THE PROJECT
ENGINEER, IN WRITING, AND THE PROJECT ENGINEER WILL PROMPTLY VERIFY THE SAME. ANY WORK
DONE AFTER SUCH DISCOVERY, UNTIL AUTHORIZED, WILL BE AT THE CONTRACTOR'S RISK.
ANY DAMAGE TO PRIVATE PROPERTY AND/OR EXISTING UTILITIES INCURRED DURING CONSTRUCTION
ACTIVITIES SHALL BE THE SOLE RESPONSIBILITY OF THE CONTRACTOR.
ALL MECHANIZED EQUIPMENT OPERATED NEAR SURFACE WATERS SHALL BE INSPECTED AND
MAINTAINED REGULARLY TO PREVENT CONTAMINATION OF SURFACE WATERS FROM FUELS,
LUBRICANTS, HYDRAULIC FLUIDS, OR OTHER TOXIC MATERIALS. CONSTRUCTION SHALL BE STAGED IN
ORDER TO MINIMIZE THE EXPOSURE OF EQUIPMENT TO SURFACE WATERS TO THE MAXIMUM EXTENT
PRACTICABLE. FUELING, LUBRICATION, AND GENERAL EQUIPMENT MAINTENANCE SHALL BE PERFORMED
IN A MANNER TO PREVENT, TO THE MAXIMUM EXTENT PRACTICABLE, CONTAMINATION OF SURFACE
WATERS BY FUELS AND OILS.
11. HEAVY EQUIPMENT WORKING IN WETLANDS SHALL BE PLACED ON MATS OR OTHER MEASURES SHALL BE
TAKEN TO MINIMIZE SOIL DISTURBANCE.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Mc_ADAM
The John R McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
CONSTRUCTION SEQUENCE:
1. OBTAIN PLAN APPROVAL AND OTHER APPLICABLE PERMITS.
2. OBTAIN AN APPROVED (STAMPED) EROSION & SEDIMENT CONTROL PLAN AND KEEP IT ON -SITE EITHER IN THE INSPECTION BOX, CONSTRUCTION OFFICE, OR WITH THE CONTRACTOR.
3. PROJECT IS LOCATED AMONG SURFACE WATERS WITH TROUT WATER (TR) CLASSIFICATION PER NC DWR. AS SUCH, CONSTRUCTION PRACTICES SHALL BE CONDUCTED IN ACCORDANCE WITH
THE APPROVED EROSION CONTROL PLAN AND IN SUCH A MANNER AS TO MINIMIZE THE EXTENT AND DURATION OF DISTURBANCE OF THE STREAM CHANNEL.
4. SCHEDULE AND HOLD AN ON -SITE PRE -CONSTRUCTION CONFERENCE AT LEAST ONE WEEK PRIOR TO BEGINNING ANY LAND -DISTURBING ACTIVITIES. THE CONFERENCE SHOULD BE
ATTENDED BY THE AVERY COUNTY EROSION CONTROL INSPECTOR, THE GENERAL CONTRACTOR, ANY SUBCONTRACTORS, THE ENGINEER, AND A REPRESENTATIVE OF THE OWNER.
5. CONTRACTOR SHALL NOTIFY "NC811" (811) OR (1-800-632-4949) AT LEAST 3 FULL BUSINESS DAYS PRIOR TO BEGINNING CONSTRUCTION OR EXCAVATION TO HAVE EXISTING UTILITIES
LOCATED. CONTRACTOR SHALL CONTACT ANY LOCAL UTILITIES THAT PROVIDE THEIR OWN LOCATOR SERVICES INDEPENDENT OF "NC811". REPORT ANY DISCREPANCIES TO THE ENGINEER
IMMEDIATELY.
6. ALL DIMENSIONS AND GRADES SHOWN ON THE PLANS SHALL BE FIELD VERIFIED BY THE CONTRACTOR PRIOR TO CONSTRUCTION. CONTRACTOR SHALL NOTIFY THE ENGINEER IF ANY
DISCREPANCIES EXIST PRIOR TO PROCEEDING WITH CONSTRUCTION, FOR NECESSARY PLAN OR GRADE CHANGES. NO EXTRA COMPENSATION SHALL BE PAID TO THE CONTRACTOR FOR ANY
WORK DONE DUE TO DIMENSIONS OR GRADES SHOWN INCORRECTLY ON THESE PLANS IF SUCH NOTIFICATION HAS NOT BEEN GIVEN.
7. ESTABLISH CONSTRUCTION ENTRANCE (SEE DETAIL ON SHEET C6.13) AND STAGING AREAS ACCORDING TO THE EROSION CONTROL PLANS. IF NECESSARY, TEMPORARY DRIVEWAY PERMIT
FOR CONSTRUCTION ENTRANCES IN NCDOT RIGHT OF WAY MUST BE PRESENTED AT PRE -CONSTRUCTION MEETING. THE CONTRACTOR SHOULD DOCUMENT, VISUALLY AND IN WRITING,
THE EXISITNG CONDITIONS OF ANY PERMANENT SITE ACCESS LOCATIONS AND ACCESS ROUTES TO BE USED DURING CONSTRUCTION.
8. ALL EROSION CONTROL MEASURES SHALL BE CONSTRUCTED IN ACCORDANCE WITH AVERY COUNTY EROSION AND SEDIMENT CONTROL REQUIREMENTS.
9. INSTALL SILT FENCE, INLET PROTECTION, SEDIMENT TRAPS, DIVERSION DITCHES, TREE PROTECTION, AND OTHER MEASURES AS SHOWN ON PLANS, CLEARING ONLY AS NECESSARY TO
INSTALL THESE DEVICES.
10. LIMITS OF DISTURBANCE SHALL BE MARKED BY SAFETY FENCING EITHER WITH SILT FENCE OR ORANGE TREE PROTECTION FENCE (SEE DETAIL ON SHEET C6.14).
11. USE THE AREAS DESIGNATED ON THE PLANS FOR ALL STAGING ACTIVITIES RELATED TO THE PROJECT.
12. PARK ALL CONSTRUCTION EQUIPMENT, INCLUDING TRUCKS AND HEAVY EQUIPMENT WITHIN THE LIMITS OF DISTURBANCE.
13. WHEN ACCESS TO A CONSTRUCTION AREA REQUIRES CROSSING A DELINEATED JURISDICTIONAL FEATURE, IMPACTS SHALL BE MINIMIZED BY PLACING A TEMPORARY STREAM/WETLAND
CROSSING ACROSS THE FEATURE PRIOR TO ACCESSING THE AREA WITH HEAVY EQUIPMENT PER APPROVED PLANS AND SPECIFICATIONS. SEE DETAIL SHEETS C6.13 AND C6.17 FOR
TEMPORARY STREAM AND WETLAND CROSSINGS.
14, INSTALL REMAINING EROSION CONTROL MEASURES AS SHOWN ON SHEETS C6.04 THROUGH C6.07. CLEAR AND GRUB ONLY AS NECESSARY TO INSTALL THESE DEVICES.
15. BEGIN GRADING ACTIVITIES. IN GENERAL, THE CONTRACTOR SHALL WORK FROM UPSTREAM TO DOWNSTREAM AND CONSTRUCTION IN A LIVE CHANNEL UTILIZE A PUMP -AROUND OR
FLOW DIVERSION MEASURE AS SHOWN ON THE PLANS. MAINTAIN AND ADJUST E&SC MEASURES AS GRADING PROGRESSES. SEE TABLE 1- WORKING SECTIONS ON SHEET C6.01 FOR
PROGRESSION OF SITE GRADING AS DETERMINDED BY THE ENGINEER. CHANGES TO THE SITE GRADING SEQUENCE MAY BE MADE WITH APPROVAL OF THE ENGINEER.
16. CONTRACTOR SHALL EXCAVATE THE PROPOSED CHANNEL AND MODIFY PORTIONS OF THE EXISTING CHANNEL BASED ON RIFFLE ELEVATIONS IN SECTIONS NO GREATER THAN 300' IN
LENGTH AT A TIME (EXCEPT WHERE LONGER SECTIONS ARE NECESSARY TO MAINTAIN CONSTRUCTABILITY).
17. AT THE END OF EACH WORKING DAY, THE CONTRACTOR WILL BE RESPONSIBLE FOR THE APPLICATION OF SEED AND STRAW, AS APPLICABLE, TO NEWLY ESTABLISHED STREAMBANKS AND
DISTURBED AREAS. EROSION CONTROL MATTING WILL BE INSTALLED ON TOP OF THE SEED AND STRAW IN ACCORDANCE WITH THE EROSION CONTROL CONSTRUCTION SEQUENCE.
18. WORK SECTIONS THAT INVOLVE THE CONSTRUCTION OF A CONFLUENCE OF TWO OR MORE REACHES MAY REQUIRE THE USE OF TWO OR MORE PUMP -AROUND OPERATIONS.
19 GRADING OF SOME PORTIONS OF THE PROPOSED FLOODPLAIN MAY NEED TO BE DELAYED UNTIL AFTER WORK IN SUBSEQUENT SECTIONS HAS BEEN COMPLETED, ESPECIALLY NEAR THE
CONFLUENCES. HAUL ROADS AND TEMPORARY SILT FENCE MAY ALSO NEED TO BE REMOVED BEFORE THE PROPOSED FLOODPLAIN CAN BE COMPLETED AND/OR UNUSED EXISTING
CHANNEL BE FILLED.
20. AFTER EXCAVATING THE CHANNEL TO DESIGN GRADES, INSTALLING IN -STREAM STRUCTURES, SEED AND MULCH, MATTING, AND TRANSPLANTS, THE NEW CHANNEL CAN RECEIVE FLOW
AFTER APPROVAL BY THE ENGINEER.
21. WATER WILL BE TURNED INTO THE CONSTRUCTED CHANNEL ONCE THE AREA IN AND AROUND THE NEW CHANNEL HAS BEEN STABILIZED. NO WATER SHALL BE TURNED INTO ANY SECTION
OF CHANNEL PRIOR TO THE CHANNEL BEING COMPLETELY STABILIZED WITH ALL STRUCTURES INSTALLED.
22. ANY GRADING ACTIVITIES ADJACENT TO THE STREAM CHANNEL SHALL BE COMPLETED PRIOR TO TURNING WATER INTO THE NEW STREAM CHANNEL SEGMENTS. THE CONTRACTOR SHALL
NOT GRADE OR ROUGHEN ANY AREAS WHERE EXCAVATION ACTIVITIES HAVE NOT BEEN COMPLETED.
23. CONTRACTOR SHALL IMPROVE AND CONSTRUCT THE FARM ROADS AND PERMANENT CROSSINGS BY INSTALLING CULVERTS, STABILIZING SIDE SLOPES, AND MODIFYING THE FARM ROAD
BED ACCORDING TO THE PLANS AND SPECIFICATIONS. PERMANENT STREAM CROSSINGS WILL HE INSTALLED WHILE THE WORKING SECTION CONTAINING THE CROSSING HAS BEEN
DEWATERED. ADJUST HAUL ROADS AND ASSOCIATED SILT FENCE AS NECESSARY WHEN PERMANENT STREAM CROSSINGS ARE INSTALLED. THE CONTRACTOR MAY PLACE A TEMPORARY
STREAM CROSSING (I.E. LOG MAT) IN THE LOCATION OF THE PERMANENT CROSSING PRIOR TO INSTALLATION OF THE PERMANENT STRUCTURE.
24. THE CONTRACTOR SHALL DILIGENTLY AND CONTINUOUSLY MAINTAIN ALL EROSION CONTROL DEVICES AND STRUCTURES.
25. FOR PHASED EROSION CONTROL PLANS, CONTRACTOR SHALL MEET WITH EROSION CONTROL INSPECTOR PRIOR TO COMMENCING WITH EACH PHASE OF EROSION CONTROL MEASURES.
26. WHEN APPLICABLE, THE LAND DEVELOPMENT INSPECTOR SHOULD BE CALLED TO CONDUCT INSPECTIONS ON STORM DRAINAGE, SIDEWALKS, DRIVE WAY IMPROVEMENTS, AND ALL
ASPECTS OF ROAD CONSTRUCTION.
27. STABILIZE THE SITE AS AREAS ARE BROUGHT TO FINISHED GRADE. AT THE CONCLUSION OF GRADING AND CONSTRUCTION OR IF LAND -DISTURBING ACTIVITY STOPPED FOR MORE THAN 14
CONSECUTIVE CALENDAR DAYS, PERMANENT VEGETATIVE COVER SHALL BE INSTALLED PER SHEETS L5.00 - L5.02.
28. CONTRACTOR SHALL PLANT WOODY VEGETATION AND LIVE STAKES, ACCORDING TO PLANTING DETAILS AND SPECIFICATIONS. THE CONTRACTOR SHALL COMPLETE THE LIVE STAKING AND
REFORESTATION (BARE -ROOT PLANTING) PHASE OF THE PROJECT AND APPLY PERMANENT SEEDING AT THE APPROPRIATE TIME OF YEAR.
29. COORDINATE WITH THE EROSION CONTROL INSPECTOR PRIOR TO REMOVAL OF ANY EROSION CONTROL MEASURES.
30. STABILIZE ALL DISTURBED AREAS. REMOVE STAGING AREA AND CONSTRUCTION ENTRANCE
31. REMOVE ALL EROSION CONTROL MEASURES AND CONTACT AVERY COUNTY FOR FINAL INSPECTION ONCE PERMANENT VEGETATION HAS BEEN ESTABLISHED.
32. PERMANENT SITE ACCESS LOCATIONS AND ACCESS ROUTES USED DURING CONSTRUCTON SHALL BE RETURNED TO EQUAL OR BETTER CONDITION THAN THEY EXISTED PRIOR TO THE
BEGINING OF CONSTRUCTION ACTIVITIES BEFORE DEMOBILIZING FROM THE SITE.
33. DEMOBILIZE ALL EQUIPMENT AND MATERIALS FROM SITE.
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
7
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC1
CHECKED BY RAS
DRAWN BY RHW
SCALE NTS
DATE 02.18.2020
►11111
CA
SEAL -17r
..0490.730
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1
EROSION CONTROL
NOTES
C6.00

TABLE 1 - WORKING SECTIONS
Order of
Progress
Reach
Upstream Pump
Station
Downstream Pump
Station
Notes
1
UT2
3+80
6+80
Construct the proposed channel, install proposed structures, and construct f
permanent crossing.
2
UT2
6+20
7+80
Construct the proposed channel and install proposed structures. Allow the
constructed channel to safely discharge to the exisitng Fork Creek channel.
3
UT3
5+40
8+00
Construct the proposed channel east of existing Fork Creek. Allow the
constructed channel to safely discharge to the existing Fork Creek channel.
4
Fork Creek, UT1,
UT2, UT3, UT4
Construct Fork Creek where the proposed channel is off-line of the existing
channel. Construct each tributary and the confluence where the proposed
channel is off-line of the exising channel. When necesssary, pump stream
flow from UT1 to existing Fork Creek.
5
Fork Creek
0+00
2+00
Construct the upstream tie-in of Fork Creek. Pump stream flow around the
area where construction is occuring, discharging the diverted flow back into
the existing channel downstream of the area of work.
•
6
Fork Creek
23+00
24+30
Construct the downstream tie-in of Fork Creek. Pump stream flow around
the area where construction is occuring, discharging the diverted flow back
into the existing channel downstream of the area of work.
7
Fork Creek
Remove pump around upstream of the constructed channel.
8
UT2
7+80
8+50
Fill the existing Fork Creek channel and construct the remaining proposed
channel and install proposed structures.
9
UT3
8+00
9+00
Fill the existing Fork Creek channel and construct the remaining proposed
channel and install proposed structures.
10
UT1
0+00
0+50
Construct the upstream tie-in of UT1. When the constructed channel is
stable, remove the pump around.
11
UT4
5+70
7+10
Fill the existing Fork Creek channel and construct the remaining proposed
channel and install proposed structures.
Notes:
1. Pump stations are approximate and may be changed at the discretion of the contractor.
2. Construction sequencing may be changed at the discretion of the engineer.
3. If multiple construction crews are on site, the above sequencing may occur simultaneously.
CHANNEL CONSTRUCTION (PUMP AROUND):
1. INSTALL PUMP AROUND ALONG 200' TO 300' OF STREAM CHANNEL, OR NO MORE THAN CAN BE CONSTRUCTED IN ONE (1) WORKING DAY (DEWATERING AND PUMP
AROUND DETAILS ON SHEETS C6.10 AND C.11). SUGGESTED CONSTRUCTION SEQUENCE PROVIDED ON TABLE 1 - WORKING SECTIONS.
2 RIPRAP APRONS WILL BE CONSTRUCTED TO IMPEDE ANY EROSION OF THE CHANNEL AND STREAM BANKS BY THE WATER DIVERTED FROM THE PUMP -AROUND PROCEDURE.
3. WORK SECTIONS THAT INVOLVE THE CONSTRUCTION OF A CONFLUENCE OR TWO REACHES MAY REQUIRE THE USE OF TWO PUMP -AROUND OPERATIONS.
4. HARVEST MATERIAL FROM THE BOTTOM OF THE EXISTING CHANNEL TO BE PLACED IN THE BOTTOM OF THE PROPOSED CHANNEL. THIS SHALL INCLUDE THE SURFACE
MATERIAL AND UP TO ONE (1) FOOT BELOW TO INCLUDE THE HYPORHEIC ZONE. ADDITIONAL RIVER STONE SHALL BE MIXED WITH EXISTING CHANNEL MATERIAL AS
NECESSARY.
5. IN -STREAM STRUCTURES WILL BE INSTALLED ACCORDING TO THE DETAILS PRESENTED ON SHEETS C8.01 THRU C8.06.
6. FILL EXISTING CHANNEL ON THE SAME WORKING DAY AS COMPLETING THE PROPOSED CHANNEL WHERE THE CONSTRUCTION SEQUENCING ALLOWS. IN NO EVENT SHALL
THE EXISTING CHANNEL BE FILLED PRIOR TO THE COMPLETE CONSTRUCTION OF THE CORRESPONDING PROPOSED CHANNEL.
7. ANY EXCAVATED MATERIAL CONTAINING MANMADE MATERIAL IS NOT SUITABLE MATERIAL FOR CHANNEL FILL AND MUST BE DISPOSED OF OFFSITE UNLESS OTHERWISE
DIRECTED BY OWNER.
8. IN ANY SECTION WHERE THE NEW CHANNEL ALIGNMENT CROSSES THE EXISTING CHANNEL A CLAY PLUG WILL BE INSTALLED IN THE EXISTING CHANNEL AS PER DETAIL ON
SHEET C6.13.
9. THE PROPOSED CHANNEL BANKS SHALL BE STABILIZED WITH EROSION CONTROL MATTING AND TEMPORARY SEEDING UPON COMPLETION OF EACH SECTION AS PER DETAIL
ON SHEETS C6.14 AND L5.02.
10. COMPLETE ALL EARTHWORK, STRUCTURE INSTALLATION, AND STABILIZATION IN THE PUMP AROUND AREA.
11. FILL THE EXISTING CHANNEL AS SHOWN IN THE PLANS OR AS DIRETED BY THE ENGINEER. PLACE CHANNEL PLUGS AS SHOWN IN THE PLANS OR AS DIRECTED BY THE
ENGINEER ON SITE.
12. CONTRACTOR SHALL NOTIFY ENGINEER UPON DISCOVERY OF ANY CONSTRAINTS DISCOVERED IN THE CONSTRUCTION OF THE PROPOSED CHANNEL OR STRUCTURE
PLACEMENT AND ADJUSTMENTS CAN BE MADE ON SITE.
13. GRADING OF THE PROPOSED FLOODPLAIN MAY NEED TO BE DELAYED UNTIL AFTER WORK IN SUBSEQUENT SECTIONS HAS BEEN COMPLETED, ESPECIALLY NEAR
CONFLUENCES. HAUL ROADS AND TEMPORARY SILT FENCE MAY ALSO NEED TO BE REMOVED BEFORE THE PROPOSED FLOODPLAIN CAN BE COMPLETED AND/OR UNUSED
EXISTING CHANNEL CAN BE FILLED.
EXISTING CONDITION & DEMOLITION NOTES:
1. THERE SHALL BE NO DEMOLITION ACTIVITIES UNTIL AFTER A PRE -CONSTRUCTION MEETING HAS TAKEN PLACE.
2. ALL MATERIAL TO BE DEMOLISHED SHALL BE REMOVED FROM THE SITE AND DISPOSED OF AT A PERMITTED SITE IN ACCORDANCE WITH
ALL LOCAL, STATE AND FEDERAL LAWS.
3. EXISTING UTILITIES AND STRUCTURES SHOWN, BOTH UNDERGROUND AND ABOVE GROUND, ARE BASED ON A HELD SURVEY AND THE
BEST AVAILABLE RECORD DRAWINGS. THE CONTRACTOR SHALL VERIFY FIELD CONDITIONS PRIOR TO BEGINNING RELATED
CONSTRUCTION. ANY DISCREPANCIES SHALL BE REPORTED TO THE ENGINEER IMMEDIATELY.
SITE PREPARATION: CLEARING & TOPSOIL/SUBSOIL EXCAVATION
1. ALL SHRUBS AND SMALL TREES DESIGNATED BY THE ENGINEER WILL BE SAVED FOR TRANSPLANTING. PLANTS THAT ARE TO BE
TRANSPLANTED WILL BE MARKED WITH HIGHLY VISIBLE TAPE.
2. ANY UNUSABLE TREES & BRUSH REMOVED DURING CLEARING & GRUBBING OF SITE SHALL BE CHIPPED AND HAULED OFF SITE FOR
DISPOSAL OR BURNED.
3. CONTRACTOR SHALL MANAGE EXCAVATED TOPSOIL SEPARATELY FROM EXCAVATED SUBSOIL EXCAVATED TOPSOIL SHALL BE PLACED
WITHIN THE DESIGNATED TEMPORARY STOCKPILE AREAS AWAY FROM THE CHANNEL TO BE FILLED (SEE PLANS). TOPSOIL SHALL BE FREE
OF STONES OVER 1" IN DIAMETER, ROOTS, STICKS, RUBBISH, STIFF CLAY, AND EXTRANEOUS MATTER.
4. EXCAVATED SUBSOIL SHALL BE PLACED NEAR THE CHANNEL TO BE FILLED. ONCE THE NEW STREAM IS CONSTRUCTED, SUBSOIL SHALL
BE USED TO FILL THE EXISTING CHANNEL FIRST, THEN STOCKPILED TOPSOIL SHALL BE USED FOR THE FINAL 6 INCHES OF FILL TO ACHIEVE
DESIGN GRADES AND CREATE A SOIL BASE FOR VEGETATION.
5. IMPORTED TOPSOIL SHALL HAVE A LOAMY TEXTURE AND HAVE SAND, SILT, AND CLAY PERCENTAGES THAT MEET THE U.S.
DEPARTMENT OF AGRICULTURE CHARACTERISTICS OF A LOAMY SOIL. ORGANIC CONTENT SHALL NOT BE LESS THAN 1.5% BY WEIGHT.
PH RANGE SHALL BE FROM 6-7.5. IF PH IS LESS THAN 6, LIME SHALL BE ADDED. SOLUBLE SALTS SHALL NOT EXCEED 500PPM. IMPORTED
TOPSOIL SHALL BE FREE OF DEBRIS, ROOTS, PLANTS, STICKS, RUBBISH, STIFF CLAYS, AND STONES OVER 1 INCH IN DIAMETER.
6. CONTRACTOR SHALL HARVEST AND STOCKPILE NATIVE CHANNEL SUBSTRATE (COBBLE, STONE, ETC.) FOR USE IN PROPOSED IN -STREAM
STRUCTURES.
SEAL '7r
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049073
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The John R. McAdams Company, Inc
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361_ 5000
fax [phone]
license number: C-0293, C-187
www mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19000-EC1
RAS
RHW
NTS
02.18.2020
EROSION CONTROL
NOTES
C6.01
1

EROSION & SEDIMENT CONTROL NOTES:
1. GRADING AND EROSION CONTROL METHODS SHALL ADHERE TO THE AVERY COUNTY STANDARDS AND SPECIFICATIONS.
2. EROSION AND SEDIMENT CONTROL (E&SC) PERMIT AND A CERTIFICATE OF COVERAGE (COC) MUST BE OBTAINED BEFORE ANY LAND DISTURBANCE
ACTIVITIES.
3. WHEN PROJECT 15 COMPLETE, THE PERMITEE SHALL VISIT DEQ.NC.GOV/NCGO1 TO SUBMIT AN ELECTRONIC NOTICE OF TERMINATION (E-NOT). A $100
ANNUAL GENERAL FEE WILL BE CHARGED UNTIL THE E-NOT HAS BEEN FILLED OUT.
4. E&SC DEVICES MUST BE INSTALLED AND INSPECTED PRIOR TO ANY GRADING ON SITE. THE CONTRACTOR SHALL CALL FOR AN INSPECTION BY AVERY
COUNTY ONCE INITIAL MEASURES ARE IN PLACE.
5. A COPY OF THE APPROVED EROSION CONTROL PLAN MUST BE ON FILE AT THE JOB SITE AT ALL TIMES. FAILURE TO FOLLOW THE APPROVED PLAN
SEQUENCE AND DETAILS COULD SUBJECT THE CONTRACTOR TO FINES AND PENALTIES ISSUED BY AVERY COUNTY.
6. CONSTRUCTION, MAINTENANCE, AND REMOVAL OF ALL EROSION CONTROL DEVICES ARE THE RESPONSIBILITY OF THE GRADING CONTRACTOR UNLESS
OTHERWISE NOTED.
7. ANY GRADING BEYOND THE DENUDED LIMITS SHOWN ON THE PLAN IS A VIOLATION OF THE APPROVED EROSION CONTROL PLAN AND IS SUBJECT TO
A FINE BY AVERY COUNTY.
8. DISTURBANCE OUTSIDE OF THE SITE PROPERTY LIMITS OR PUBLIC R/W SHALL ONLY BE ALLOWED BY SIGNED GRADING AGREEMENTS AND/OR
EASEMENTS BETWEEN THE DEVELOPER AND OFFSITE PROPERTY OWNER.
9. THE CONTRACTOR IS RESPONSIBLE TO MAINTAIN SAFE OPEN ACCESS TO ALL ADJACENT PROPERTIES DURING THE CONSTRUCTION PERIOD FOR
IMPROVEMENTS.
10. STAGING AREAS, STOCKPILE AREAS, CONSTRUCTION ENTRANCES, AND ACCESS ROADS WILL BE IDENTIFIED AND LOCATED ACCORDING TO THE
EROSION CONTROL PLANS AND LANDOWNER. VARIANCES WILL BE ALLOWED ASSUMING BOTH THE CONTRACTOR AND THE ENGINEER VERBALLY
AGREE.
11. CONTRACTOR SHALL SEED AND STABILIZE ALL STEEP SLOPES (GREATER THAN 3H:1V) WITHIN 7 DAYS, 10 DAYS FOR MODERATE SLOPES (3H:1V OR LESS)
AND WITHIN 14 CALENDAR DAYS EVERYWHERE ELSE ACCORDING TO THE TEMPORARY SEEDING SCHEDULE ON SHEET L5.02.
12. FOR ANY LAND DISTURBING ACTIVITY WHERE GRADING ACTIVITIES HAVE BEEN COMPLETED, TEMPORARY OR PERMANENT GROUND COVER (SHEET
L5.02) SUFFICIENT TO RESTRAIN EROSION SHALL BE PROVIDED AS SOON AS PRACTICAL, BUT IN NO CASE LATER THAN SEVEN (7) DAYS AFTER
COMPLETING THE WORK. STABILIZATION IS THE BEST FORM OF EROSION CONTROL. TEMPORARY SEEDING IS NECESSARY TO ACHIEVE EROSION
CONTROL ON LARGE DENUDED AREAS AND ESPECIALLY WHEN SPECIFICALLY REQUIRED AS PART OF THE CONSTRUCTION SEQUENCE ON THE PLAN.
13. THE EROSION CONTROL INSPECTOR MAY REQUIRE ADDITIONAL FIELD MEASURES AS NECESSARY TO PROVIDE ADEQUATE PROTECTION FROM
RECEIVING WATER COURSES.
14. PROTECTION OF EXISTING VEGETATION: AT THE START OF GRADING INVOLVING THE STRIPPING OF TOPSOIL OR LOWERING OF EXISTING GRADE
AROUND A TREE, A CLEAN, SHARP, VERTICAL CUT SHALL BE MADE AT THE EDGE OF THE TREE SAVE AREA AT THE SAME TIME AS OTHER EROSION
CONTROL MEASURES ARE INSTALLED. THE TREE PROTECTION FENCING SHALL BE INSTALLED ON THE SIDE OF THE CUT FARTHEST AWAY FROM THE
TREE TRUNK AND SHALL REMAIN IN PLACE UNTIL ALL CONSTRUCTION IN THE VICINITY OF THE TREES IS COMPLETE. NO STORAGE OF MATERIALS, FILL,
OR EQUIPMENT AND NO TRESPASSING SHALL BE ALLOWED WITHIN THE BOUNDARY OF THE PROTECTED AREA AND SHALL BE POSTED ON THE
PROTECTION FENCE. A PROTECTION FENCE CONSTRUCTED OF MATERIAL RESISTANT TO DEGRADATION BY SUN, WIND, AND MOISTURE FOR THE
DURATION OF THE CONSTRUCTION, SHALL BE INSTALLED AT THE SAME TIME AS THE EROSION CONTROL MEASURES AND SHALL BE IN PLACE UNTIL ALL
CONSTRUCTION IN THE VICINITY OF THE TREES IS COMPLETE.
15. A CONSTRUCTION SEQUENCE HAS BEEN PROVIDED (SEE SHEET C6.00 AND C6.01). INSTALLATION OF ALL PROPOSED E&SC MEASURES IN THE
SEQUENCE(S) PROVIDED AND MAINTENANCE OF THOSE DEVICES IS REQUIRED. THE CONTRACTOR MAY BE ALLOWED, WITH PRIOR APPROVAL FROM
THE OWNER, TO COORDINATE CHANGES TO THE PLAN WITH THE ON -SITE E&SC INSPECTOR AND THE ENGINEER.
16. CONTRACTOR SHALL INSPECT AND REPAIR ALL EROSION CONTROL DEVICES AT LEAST ONCE PER WEEK AND AFTER EVERY SIGNIFICANT RAINFALL
EVENT. EACH DEVICE IS TO BE MAINTAINED OR REPLACED IF SEDIMENT ACCUMULATION HAS REACHED ONE HALF THE CAPACITY OF THE DEVICE.
17. CONTRACTOR WILL FIELD LOCATE ALL SILT FENCE OUTLETS AT LOW POINTS IN SILT FENCE AND A MINIMUM OF EVERY 100 LINEAR FEET TO PROVIDE
RELIEF FROM CONCENTRATED FLOWS. SILT FENCE OUTLETS SHOWN ON THESE PLANS ARE BASED ON THE BEST TOPOGRAPHIC INFORMATION
AVAILABLE AT THE TIME OF DESIGN. CONTRACTOR TO FIELD VERIFY AND ADJUST LOCATIONS OF SILT FENCE OUTLETS AND/OR PLACE ADDITIONAL
OUTLETS TO INSURE THAT ALL LOW SPOTS ALONG THE SILT FENCE HAVE AN OUTLET.
18. WASHED STONE AND WIRE BACKING SHALL BE USED WITH SILT FENCE WHENEVER SILT FENCE IS PLACED AT THE TOE OF A SLOPE >10' VERTICAL OR
ALONG ANY CHANNEL OR WATER COURSE WHERE 50' OF BUFFER IS NOT PROVIDED.
19. ALL DIMENSIONS AND GRADES SHOWN ON THE PLANS SHALL BE FIELD VERIFIED BY THE CONTRACTOR PRIOR TO CONSTRUCTION. CONTRACTOR SHALL
NOTIFY THE OWNER IF ANY DISCREPANCIES EXIST PRIOR TO PROCEEDING WITH CONSTRUCTION FOR NECESSARY PLAN OR GRADE CHANGES. NO
EXTRA COMPENSATION SHALL BE PAID TO THE CONTRACTOR FOR ANY WORK DONE DUE TO DIMENSIONS OR GRADES SHOWN INCORRECTLY ON
THESE PLANS IF SUCH NOTIFICATION HAS NOT BEEN GIVEN.
20. NO DEBRIS SHALL BE TRACKED ONTO PUBLIC RIGHT OF WAY, IF THE SITUATION OCCURS WHERE MUD, ROCKS AND DEBRIS IS TRACKED ONTO
PAVEMENT, THE CONTRACTOR SHALL CLEAN THE PAVEMENT AND INSTALL ADDITIONAL MEASURES TO PREVENT FUTURE OCCURRENCES.
21. INSTALL SILT FENCE FOR ALL STAGING AND STOCKPILE AREAS (SEE DETAIL ON SHEET C6 09). ANY STOCKPILE AREAS SHALL USE TWO (2) ROWS OF SILT
FENCE.
22. IF CONCRETE WASHOUTS ARE UTILIZED, THESE AREAS ARE TO BE WITHIN THE LIMITS OF DISTURBANCE AND SHOULD BE LOCATED AT LEAST 50 FT.
AWAY FROM STORM DRAIN INLETS AND SURFACE WATER.
EROSION & SEDIMENT CONTROL MAINTENANCE PLAN:
1. QUALIFIED PERSONNEL, ON A DAILY BASIS WILL EVALUATE ALL TEMPORARY EROSION AND SEDIMENT CONTROL
PRACTICES FOR STABILITY AND OPERATION.
2. INSPECT AND MAINTAIN ALL EROSION CONTROL MEASURES EVERY 7 DAYS AND AFTER EACH SIGNIFICANT RAINFALL
(0.5" OR GREATER) AND DOCUMENT WITH INSPECTION REPORTS AND WRITTEN LOGS SHALL BE KEPT.
3. A RAIN GAUGE WILL ALSO BE KEPT ON -SITE AND DAILY RAINFALL AMOUNTS WILL BE RECORDED.
4. ANY REPAIRS NEEDED WILL BE PERFORMED IMMEDIATELY TO MAINTAIN ALL PRACTICES AS DESIGNED.
5. THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE MAINTENANCE OF TEMPORARY ON -SITE E&SC MEASURES.
6. THE CONTRACTOR SHALL BE RESPONSIBLE FOR IMPLEMENTING AND FOLLOWING THE APPROVED E&SC PLAN.
7. A COPY OF THE COMBINED SELF -INSPECTION MONITORING FORM CAN BE FOUND ON THE NC DEMLR WEBSITE AT:
HTTPS://DEQ. NC.GOV/ABOUT/DIVISIONS/ENERGY-MINERAL-LAND-RESOURCES/EROSION-SEDIMENT-CONTROL/FORMS
SEALtANE
:
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DA M. S
The John R McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC1
CHECKED BY RAS
DRAWN BY RHW
SCALE NTS
DATE 02.18, 2020
1
EROSION CONTROL
NOTES
C6.02

LIMITS OF DISTURBANCE
(TYP.)
OVERHEAD
UTILITY
EASEMENT
\\\
PROPERTY LINE (TYP.)
SHEET C6.05
PROPOSED CONTRUCTION
ENTRANCE (TYP.)
PROPOSED CONSERVATION
EASEMENT (TYP.)
PROPOSED CONTRUCTION
ENTRANCE (TYP)
GRAPHIC SCALE
75 150
1inch =150ft.
IlIM
SEAL s
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=• 049073 -
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MCA DAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1" = 1501
DATE 02.18,2020
EROSION CONTROL
OVREVIEW
C6.03

MCADAMS
_
= 5 — PROPOSED CONSERVATION
:0;0 - EASEMENT
G CHANNEL
company, Inc
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361, 5000
fax 919. 361, 2269
license number: C-0293, C-187
www.mcadamsco.com
EXISTIN r
TO BE FILLED ^
-.
LIMITS OF „0/ ,
_ DISTURBANCE : ROCK FLOODPLAIN
PROPERTY LINE
:dam
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is
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PROPOSED
CONSTRUCTION
ENTRANCE
LITTLE BUCK HILL ROAD
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AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
-
•
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Axiom Environmental, Inc.
•
0
NOTE:
TWO ROWS OF SILT FENCE SHALL BE INSTALLED AROUND
STAGING/STOCKPILE AREAS PER THE E&SC NOTES.
GRAPHIC SCALE
30 60
120
1inch =60ft.
TOTAL DISTURBED AREA = 27.53 AC.
VICINITY MAP
1" = 1000'
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PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC1
CHECKED BY RAS
DRAWN BY RI-IW
SCALE 1"=60'
DATE 05.14.2021
1
EROSION CONTROL
PLAN
C6.04

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2905 Meridian Parkway
Durham, NC 27713
phone 919. 361, 5000
fax 919, 361. 2269
license number: C-0293, C-187
www.mcadamsco,com
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EXISTING CHANNEL
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AVERY COUNTY, NORTH CAROLINA
RP_STORATTON
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Axiom Environmental, Inc.
1
NOTE:
TWO ROWS OF SILT FENCE SHALL BE INSTALLED AROUND
STAGING/STOCKPILE AREAS PER THE E&SC NOTES.
0
GRAPHIC SCALE
30 60
120
linch =60ft,
TOTAL DISTURBED AREA = 27.53 AC.
VICINITY MAP
1" = 1000'
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PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60'
DATE 05.14.2021
EROSION CONTROL
PLAN
C6.05
1

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The John R. McAdams Company, Inc
2905 Meridian Parkway
Durham, NC 27713
phone 919, 361. 5000
fax [phone]
license number: C-0293, C-187
www.mcadamsco,com
PROPOSED
1 EXISTING CHANNEL
TO BE FILLED
CONSERVATION �
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LIMITS OF -
DISTURBANCE
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
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Axiom Environmental, Inc.
-
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GRAPHIC SCALE
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PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60'
DATE 02.18.2020
EROSION CONTROL
PLAN
C6.06

CHANNEL
PLUG (TYP.)
s y r
ROCK FLOODPLAIN
OUTLET (TYP.)
01
— PROPOSED
CONSTRUCTION
ENTRANCE
AREA (TYP.)
EXISTING CHANNEL
TO BE FILLED
INSTALL ROCK CHECK DAMS
JIN SWALE AS NECESSARY TO
1 RETAIN SEDIMENT RUNOFF
UNTIL HILLSIDE IS STABILIZED.
CHECK DAMS SHOULD BE
CLEANED OUT REGULARLY TO
MAINTAIN CAPACITY.
MATCH LINE - SEE SHEET C6.06
i
OVERHEAD
UTILITY
EASEMENT
NOTE:
TWO ROWS OF SILT FENCE SHALL BE INSTALLED AROUND
— - STAGING/STOCKPILE AREAS PER THE E&SC NOTES.
ra
1
//LIMITS OF ' ' f
DISTURBANCE ' l
)
SEED AND MULCH HILLSIDE '
IMMEDIATELY AFTER GRADING. /
INSTALL EROSION CONTROL
MATTING AS NEESSARY,
0
GRAPHIC SCALE
30 60
120
1 inch = 60 ft.
TOTAL DISTURBED AREA = 27.53 AC.
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1" = 1000'
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MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
.RESTORATION
SYSTEMS ILLC•
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC1
CHECKED BY RAS
DRAWN BY RHW
SCALE 1"=60'
DATE 02.18.2020
EROSION CONTROL
PLAN
C6.07

CLASS 'A' STONE
8 IN. MIN. DEPTH
NOTES
1. PROVIDE TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGE
TRUCKS
2. LOCATE ENTRANCES TO PROVIDE FOR UTILIZATION
BY ALL CONSTRUCTION VEHICLES.
3. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT
TRACKING OR DIRECT FLOW OF MUD ONTO STREETS.
PERIODIC TOPDRESSING WITH STONE WILL BE NECESSARY.
4. ANY MATERIAL TRACKED ONTO THE ROADWAY MUST BE
CLEANED UP IMMEDIATELY.
5. LOCATE GRAVEL CONSTRUCTION ENTRANCE AT ALL POINTS OF
INGRESS AND EGRESS UNTIL SITE IS STABILIZED. PROVIDE
FREQUENT CHECKS OF THE DEVICE AND TIMELY MAINTENANCE.
6. NUMBER AND LOCATION OF CONSTRUCTION ENTRANCES TO
BE DETERMINED BY THE ENGINEER.
7. USE CLASS 'A' STONE OR OTHER COARSE AGGREGATE APPROVED
BY THE ENGINEER.
8. INSTALL CONSTRUCTION ENTRANCES IN A WAY TO PREVENT VEHICLES
FROM BYPASSING CONSTRUCTION ENTRANCE LEAVING PROJECT SITE.
NOTE: PLACE GEOTEXTILE FOR DRAINAGE BENEATH STONE
0
SHEET t OF
1607.01
CONSTRUCTION ENTRANCE
N.T.S.
STREAM (ANALI
CONSTRUCTION ACCESS NOAO .
CLASS O STONE
GEOTEM T ILE FOR DRAINAGE
NOTES
PLAN VIEW
12" MIN.
6' P5 0R AS, STONE IN ACCORDANCE
WITH SECTION IFI5 OF NC OOT
STANDARD SPECIFICATION
— CROSS PIPE(S): SIZE
• DETERMINED RV
CONTRACTOR
Cuss B STONE
as OR N67 STONE. 6 DEPTH (MIN )
• I1A1NNAL
ONOW10
CLASS 0 STONE
CROSS PIPE'S) )SEE NOTE)
SECTION A -A
NOT TO SCALE
PIPE(S)
FOR T PASS THE PEAK OR
BANKFULLFLOW,WH WHICHEVER STREAM
ISE CROSSING S,FROM A 2 YDESIGNED °
EAR PEAK STORM,WITHOUT OVER TOPPING.
TEMPORARY STREAM CROSSING
N.T.S.
NOTE:
LOG MATS MAY BE USED IN PLACE OF TEMPORARY CULVERT STREAM CORSSINGS WHERE APPROPRIATE.
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2905 Meridian Parkway
Durham, NC 27713
phone 919. 361, 5000
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS ILLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC2
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02.18.2020
EROSION CONTROL
DETAILS
C6.08

i
TOP AND BOTTOM STRAND
SHALL BE 10 GAUGE MIN.
WIRE
NOTES
USE GEOTEXTILE A MINIMUM OF
36" IN WIDTH AND FASTEN ADEQUATELY
TO THE POSTS AND WIRE AS DIRECTED.
USE WIRE A MINIMUM OF 32"
IN WIDTH AND WITH A MINIMUM
OF 5 LINE WIRES WITH 12" VERTICAL
SPACING.
PROVIDE 5'-0" STEEL POST OF
THE SELF -FASTENER ANGLE STEEL
TYPE.
FOR MECHANICAL SLICING METHOD
INSTALLATION, GEOTEXTILE SHALL
BE A MAXIMUM OF 18" ABOVE GROUND
SURFACE.
8' MAX. WITH WIRE
(6' MAX. WITHOUT WIRE)
MIDDLE AND VERTICAL WIRES
SHALL BE 12 %2 GAUGE MIN.
GEOTEXTILE -
GEOTEXTILE
COMPACTED FILL -
24" MAX.
(18" MIN.)
STEEL POST - 2' 0" DEPTH
EXTENSION OF GEOTEXTILE AND
WIRE INTO TRENCH
oco
ROADWAY STANDARD
5HFrr 1 OF 1
1605.01
TEMPORARY SILT FENCE
N T S.
NOTES
USE NO. 5 OR NO, 57 STONE FOR SEDIMENT
CONTROL STONE.
USE HARDWARE CLOTH 24 GAUGE WIRE MESH
WITH 14 INCH MESH OPENINGS.
INSTALL 5 FT. SELF FASTENER ANGLE STEEL
POST 2 FT. DEEP MINIMUM.
ATTACH HARDWARE CLOTH TO POSTS WITH WIRE
STAPLE OR OTHER ACCEPTABLE METHODS.
SPACE POSTS A MAXIMUM OF 3 FT.
FOR INSTALLATION BETWEEN SECTIONS OF
SILT FENCE, EXTEND SEDIMENT CONTROL
STONE A MINIMUM OF 12" ON EACH SIDE OF
SPECIAL SEDIMENT CONTROL FENCE SECTION.
11
VARIABLE
DIMENSION 7i
3 ft
1,4 WIRE MESH
SEDIMENT CONTROL STONE
f- 1 ft min
WATER FLOW —�
114 WIRE MESH
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The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax 919. 36L 2269
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
R ESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AX119000-EC2
RAS
RHW
N.T.S.
02.18.2020
EROSION CONTROL
DETAILS
C6.09
1

NOTES:-
1. EXCAVATION SHALL BE PERFORMED IN ONLY DRY SECTIONS OF CHANNEL UNLESS DRAINAGE AREA EXCEEDS 6 SQUARE MILES.
2. IMPERVIOUS DIKES SHOULD BE USED TO ISOLATE WORK AREAS FROM STREAM FLOW.
3. THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN CAN BE STABILIZED IN ONE WORKING DAY.
4. EACH PUMP AROUND PUMP SHOULD ADEQUATELY CONVEY BASE FLOW VOLUMES.
5. PUMP AROUND OPERATIONS SHOULD NOT BE UNDERTAKEN IF SIGNIFICANT RAINFALL IS FORECAST IN THE CONSTRUCTION PERIOD.
SEQUENCE OF CONSTRUCTION FOR TYPICAL PUMP AROUND
1. INSTALL SEDIMENT BAG AT THE DOWNSTREAM END OF THE DESIGNATED PROJECT WORKING AREA.
2. THE CONTRACTOR WILL INSTALL THE PUMP AROUND PUMP AND THE THE TEMPORARY PIPING THAT WILL CONVEY
UPSTREAM OF THE WORK SITE TO THE SEDIMENT BAG.
3. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING OPERATIONS FOR STREAM DIVERSION.
4. INSTALL THE DOWNSTREAM IMPERVIOUS DIKE AND PUMPING APPARATUS IF NEEDED TO DEWATER THE ENTRAPPED
HOSE FOR THIS PURPOSE SHALL BE OF SUFFICIENT SIZE TO DEWATER THE WORK AREA. THIS WATER WILL ALSO
BAG.
5. THE CONTRACTOR WILL PERFORM STREAM RESTORATION WORK IN ACCORDANCE WITH THE PLAN AND FOLLOWING THE GENERAL
CONSTRUCTION SEQUENCE.
6. THE CONTRACTOR WILL EXCAVATE ANY ACCUMULATED SEDIMENT AND DEWATER BEFORE REMOVAL OF THE IMPERVIOUS DIKE. REMOVE
IMPERVIOUS DIKES, PUMPS, AND TEMPORARY FLEXIBLE HOSE/PIPING STARTING WITH THE DOWNSTREAM DIKE FIRST.
7. ONCE THE WORKING AREA IS COMPLETED, REMOVE THE STILLING BASINS AND STABILIZE DISTURBED AREAS TO SPECIFICATIONS AS SHOWN
ON PLANS.
i
TEMPORARY RIPRAP DISSIPATION
PAD (SEE DETAIL, LOCATE AS
DIRECTED AT THE TIME OF
CONSTRUCTION)
IMPERVIOUS DIKE
(LOCATE AS DIRECTED
AT THE TIME OF
CONSTRUCTION)
TEMPORARY PIPING
PUMP AROUND PUMP
SEDIMENT BAG
77— (AS DIRECTED AT
THE TIME OF
CONSTRUCTION)
DEWATERING
PUMP
0
-Z
0
IMPERVIOUS DIKE
(LOCATE AS
DIRECTED AT
THE TIME OF
CONSTRUCTION)
TYPICAL PUMP AROUND SETUP
N.T.S.
THE BASE FLOW FROM
AREA. THE PUMP AND
FLOW INTO A SEDIMENT
FILTER FABRIC
FOR DRAINAGE
(NON —WOVEN)
COMPACTED
FILL LINED
WITH STONE
WORKING
AREA
IMPERVIOUS SHEET
BASEFLOW
IMPERVIOUS DIKE DETAIL
(PROFILE VIEW)
It
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MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc-
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC2
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02.18.2020
EROSION CONTROL
DETAILS
C6.10

4'
PROVIDE HIGH STRENGTH DOUBLE
STITCHED J TYPE SEAMS
HEAVY DUTY
DIRTBAG 55
OR EQUAL
SEWN IN SPOUT
7-
- HIGH Sp STRAPPING FORENGTH R
HOLDING HOSE
IN PLACE
rr
OPENING TO
ACCOMMODATE UP TO
4" DISCHARGE HOSE
WATER FLOW
FROM PUMP
AGGREGATE UNDERLAYMENT
(3" THICK NCDOT NO. 57
STONE)
NOTES
1. THE DEWATERING BAG SHALL BE MADE OF NON —WOVEN GEOTEXTILE WITH A MIN. SURFACE AREA OF 225 SQUARE FEET PER SIDE.
2. ALL STRUCTURAL SEAMS SHALL BE SEWN WITH A DOUBLE STITCH USING A DOUBLE NEEDLE MACHINE WITH HIGH STRENGTH THREAD,
3. THE SEAM STRENGTH SHALL WITHSTAND 100 LB/IN USING ASTM D-4884 TEST METHOD,
4. THE GEOTEXTILE FABRIC SHALL BE 10 OZ NON —WOVEN FABRIC.
5. DISCHARGE FROM THE DEWATERING BAG SHALL BE DIRECTED SUCH THAT PRE —DISTURBANCE HYDROLOGY IS NOT CHANGED.
6. TRANSPORT AND PLACE DEWATERING BAGS WITH CARE TO PREVENT RIPPING OR TEARING THE FABRIC.
7. AVOID INSTALLING ON STEEP SLOPES AS THE BAG MAY ROLL, CAUSING FAILURE.
8. INSERT THE DISCHARGE HOSE A MINIMUM OF 1—FOOT INSIDE THE DEWATERING BAG. DO NOT INSERT MORE THAN ONE DISCHARGE HOSE INTO
THE DEWATERING BAG.
9. AVOID USE OF EXCESSIVE FLOW RATES OR OVERFILLING THE DEWATERING BAG. THIS MAY CAUSE THE BAG TO RUPTURE OR CAUSE FAILURE TO
THE HOSE TO BAG CONNECTION.
MAINTENANCE
1, FOLLOW ALL MANUFACTURER RECOMMENDATIONS FOR INSPECTION AND MAINTENANCE GUIDELINES. REPLACE DEWATERING BAGS WHEN TRAPPED
SEDIMENT HAS ACCUMULATED TO 50% OF THE BAG CAPACITY OR IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS.
2. DEWATERING BAGS ARE FULL WHEN THEY NO LONGER EFFICIENTLY FILTER SEDIMENT OR PASS WATER AT A REASONABLE RATE.
SEDIMENT FILTER BAG DETAIL
N.T.S.
NOTES
1. IN WELL-DEFINED CHANNEL, EXTEND THE RIPRAP APRON UP THE CHANNEL BANKS TO AN ELEVATION OF 6" ABOVE THE MAXIMUM
TAILWATER DEPTH OR TO THE TOP OF BANK WHICHEVER IS LESS.
2. A FILTER BLANKET AND NON -WOVEN GEOTEXTILE FABRIC SHOULD BE INSTALLED BETWEEN THE RIPRAP AND SOIL FOUNDATION. FILTER
BLANKET SHALL CONSIST OF MINIMUM 4" THICK LAYER OF STONE (NCDOT#57) UNDERLAIN WITH NON -WOVEN GEOTEXTILE FABRIC.
A
ASSUMED HOSE SIZE
IS 4" DIAMETER
NCDOT CLASS 'B' RIPRAP
5'L X 2'W AND 18" THICK
ASSUMED HOSE SIZE
IS 4" DIAMETER
PLAN VIEW
SECTION A' -A'
FILTER BLANKET
TEMPORARY RIPRAP DISSIPATION PAD
N.T.S.
NCDOT CLASS 'B' RIPRAP
5'L X 2'W AND 18" THICK
►► Muir
A
9
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11
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The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax 919, 361, 2269
license number: C-0293, C-187
www, mcada msco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
R F SJORATTTON.I
. SYSTEMS I LLC•
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19000-EC2
RAS
RHW
N.T.S.
02.18.2020
EROSION CONTROL
DETAILS
C6.11

A
0
m
0
-n
co
X.
z
0
0
-n
o3
>
z
-0P OF BANK (TYP)
I -OE OF BANK (TYP)
01
PLAN VIEW
NOTE:
DETAIL PROVIDED FOR INFORMATIONAL PURPOSES.
USE OF LOG MAT IS AT THE CONTRACTORS DISCRETION.
12"X 12" +/—
ROUGH CUT TIMBER
LENGTH VARIES
A'
B'
LOG MAT
N.T.S.
12"X12" +/—
ROUGH CUT TIMBER
LENGTH VARIES
5'
MIN.
1
12'
MAX
5'
MIN.
12"X12" +/—
ROUGH CUT TIMBER
LENGTH VARIES
SECTION A - A'
SECTION B - B'
BOLT TIMBERS
— TOGETHER AS
NECESSARY
tttti ; Illll��',,
SEAL
7.
049073 0/A
Z
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
R-ESTORi1TIO
SYSTEMS:l
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC2
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02.18.2020
EROSION CONTROL
DETAILS
C6.12

CHANNEL PLUG NOTES:
1. CHANNEL PLUGS TO BE LOCATED AS SHOWN ON PLAN SHEETS C6.04 THROUGH C6.07 AND AT OTHER LOCATIONS AS DIRECTED BY THE CONSTRUCTION MANAGER.
2. CHANNEL PLUG MATERIAL SHALL BE CLAY SOIL HARVESTED ON SITE OR BROUGHT INTO THE SITE AS WELL AS MATERIAL USED IN REMOVED ROCK CHECK DAMS IF SUITABLE.
3. CHANNEL MATERIAL SHALL BE FREE OF ALL VISIBLE ORGANIC DEBRIS SUCH AS ROOTS AND LIMBS. SOILS WITH ORGANIC MATTER CONTENT EXCEEDING 5% BY WEIGHT SHALL NOT BE USED.
4. ROCKS AND STONES WITH A DIAMETER GREATER THAN 3 INCHES (IN ANY DIRECTION) SHALL BE REMOVED FROM FILL PRIOR TO COMPACTION.
5. FILL MATERIAL PLACED AT DENSITIES LOWER THAN SPECIFIED MINIMUM DENSITIES OR AT MOISTURE CONTENTS OUTSIDE THE SPECIFIED RANGES OR OTHERWISE NOT CONFORMING TO THE SPECIFIED REQUIREMENTS SHALL
BE REMOVED AND REWORKED AND REPLACED WITH ACCEPTABLE MATERIALS.
6. TOPSOIL SHALL BE PLACED ON TOP OF THE SOIL LIFTS IN THE SAME MANOR AS THE REST OF THE GRADED CONSTRUCTION SITE
7. CHANNEL PLUGS WILL BE PLANTED ACCORDING TO THE PLANTING PLAN ON SHEETS L5.00 - L5.02.
8. MINIMUM CHANNEL PLUG LENGTH TO BE 20 LINEAR FEET.
TOP OF
EXISTING BANK
(TYP.)
EXISTING
CHANNEL
BOTTOM
(TYP.)
TOP OF
A
FLOW
EXISTING BANK
(TYP.)
CHANNEL PLUG —
B
PLAN VIEW
I
CHANNEL PLUG
2' 2'
MIN EXISTING CHANNEL WIDTH MIN
PROPOSED
ELEVATION
1
CHANNEL PLUG
IMPERVIOUS CHANNEL PLUG DETAILS
N.T.S.
m
w
>
EXISTING CHANNEL
BOTTOM
VARIES
SECTION B-B'
5' MIN.
VARIES
TOP OF EXISTING CHANNEL
SECTION A -A'
I I
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone[phone]
fax [phone]
license number: C-0293, C-187
') L � �_.
3 .r. -_a- k www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
EXISTING
CHANNEL
-BOTTOM
Axiom Environmental. Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC2
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02,18.2020
EROSION CONTROL
DETAILS
C6.13

NOTES:
1. AN EROSION CONTROL BLANKET SHALL BE USED TO STABILIZE THE NEWLY CONSTRUCTED
CHANNEL FROM THE TOP OF BANK TO TOE OF SLOPE AND SHALL BE 100%
BIODEGRADABLE.
2. THE CHANNEL SIDE SLOPES SHALL BE FINE GRADED, SEEDED, FERTILIZED, AND LIMED
PRIOR TO INSTALLING THE EROSION CONTROL BLANKET. REMOVE ROOTS, TWIGS, AND
OTHER DEBRIS WHICH WOULD CAUSE BULGES IN THE MATTING AS WELL AS PREVENT THE
MATTING FROM BEING LAID FLUSH TO THE FINISHED SURFACE.
3. KEY -IN EDGES OF MATTING A MINIMUM OF 6 INCHES INTO FINISHED GRADE. LAY
MATTING SHINGLED DOWNSTREAM TO UPSTREAM, OVERLAPPING AT EDGES A MINIMUM
OF 1 FOOT.
4. INSTALL STAKES TO ENSURE GOOD GROUND CONTACT OF THE MATTING TO WITHSTAND
MEDIUM TO HIGH FLOWS. STAKES SHALL BE 100% BIODEGRADABLE AND INSTALLED PER
THE MANUFACTURER'S SPECIFICATIONS INCLUDING, BUT NOT LIMITED TO, THE
MANUFACTURER'S RECOMMENDED DENSITY AND PATTERN.
5 KEY -IN EDGES OF MATTING A MINIMUM OF 6 INCHES, PARTICULARLY NEAR RESTORATION
STRUCTURES, BOULDERS, LOGS, ETC. CHECK MATTING FOR LOOSE ENDS, FLAPS, OR OTHER
WEAKNESSES OR DAMAGE WHICH MAY CAUSE IT TO BECOME LOOSE UNDER FLOW
CONDITIONS.
6. MATTING SHALL BE PLACED ALONG THE OUTSIDE BANK OF ALL BENDS AND ALONG BOTH
SIDES OF THE CHANNEL IN TANGENT AREAS.
7. FIELD ADJUSTMENTS TO MATTING LOCATION MAY BE MADE AT THE DISCRETION OF THE
DESIGNER.
8. THE EROSION CONTROL BLANKET SHALL CONSIST OF A MACHINE -PRODUCED BLANKET
MADE OF COCONUT FIBER AND BE EQUIVALENT OR BETTER THAN THE FOLLOWING
SPECIFICATION. SOIL STABILIZATION MATTING WHICH USES PLASTICS, METALS, OR OTHER
MAN-MADE MATERIALS IN THE CONSTRUCTION OF THE MATERIAL WILL NOT BE
PERMITTED.
WEIGHT = 13.6 OZ/SY
TENSILE STRENGTH DRY (ASTM D 4595) =
TENSILE STRENGTH WET (ASTM D 4595) =
ELONGATION FAILURE WET (ASTM D 4595)
780 LBS/FT MACHINE DIRECTION
744 LBS/FT CROSS DIRECTION
672 LBS/FT MACHINE DIRECTION
648 LBS/FT CROSS DIRECTION
= 30% MACHINE DIRECTION
28% CROSS DIRECTION
OPEN AREA = 65%
RECOMMENDED SHEAR STRESS = 3LBS/SQ.FT
RECOMMENDED FLOW = 8FT/S
RECOMMENDED SLOPE </= 1:1
MINIMUM TWINE COUNT PER FOOT= 15X14
TOP OF BANK (TYP.)
BLANKET
KEYED 6" MIN
BLANKET KEYED 6" MIN
OVERLAP ROLL EDGES
1 FOOT MINIMUM (TYP.)
6 INCH DEEP (MIN.)
KEY IN TRENCH
PREPARED SLOPE
WITH SEED IN PLACE
(TYP.)
TOP OF BANK
(TYP)
BANKFULL STAGE
1' MIN
EROSION CONTROL
CROSS-SECTION VIEW TOE OF BANK
SLOPE APPLICATION ISOMETRIC VIEW
EROSION CONTROL BLANKET DETAILS
N.T.S.
TOE OF BANK
(TYP)
PLAN VIEW
(TYP.)
BLANKET
FILL MAT VOIDS
IF SPECIFIED
6 IN MIN. OVERLAP
AT ROLL END (TYP.)
COIR FIBER MATTING TO BE
INSTALLED ON CHANNEL SIDE
SLOPES FROM TOE OF BANK TO
MIN. 1' BEYOND TOP OF BANK.
rr
9
▪ 1 ▪ , " SEAL r'
049073 •�`
41-
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-EC2
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02.18.2020
EROSION CONTROL
DETAILS
C6.14

GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCGOI CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCGO1 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority having jurisdiction. All details and specifications shown on this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction.
SECTION E: GROUND STABILIZATION
Required Ground Stabilization Timeframes
Stabilize within this
Site Area Description
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
perimeter slopes
7
None
(b) High Quality Water
(HQW) Zones
7
None
(c) Slopes steeper than
If slopes are 10' or less in length and are
3:1
7
not steeper than 2:1, 14 days are
allowed
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
(d) Slopes 3:1 to 4:1
14
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
(e) Areas with slopes
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HQW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: After the permanent cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case longer than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintained in a manner to render the
surface stable against accelerated erosion until permanent ground stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
Temporary StablRzatio n Permanent Stabilization
• Temporary grass seed covered with straw or • Permanent grass seed covered with straw or
other mulches and tackifiers other mulches and tackifiers
• Hydroseeding • Geotextile fabrics such as permanent soil
• Rolled erosion control products with or reinforcement matting
without temporary grass seed • Hydroseeding
• Appropriately applied straw or other mulch • Shrubs or other permanent plantings covered
• Plastic sheeting with mulch
• Uniform and evenly distributed ground cover
sufficient to restrain erosion
• Structural methods such as concrete, asphalt or
retaining walls
• Rolled erosion control predir<,Is withgrass seed
RYLAMIDES (PANS) AND FLOCCULANTS
1 Setec utants that are appropriate for the soils being exposed du
construction, ing from the NC DWR List of Approved P occukznts.
2. Apply flocculants at or the inlets to Erosion diment Control Measures.
3. Apply flocculants at the concentr s din the NC DWR List of Approved
PAMS/Flocculants and in accord it anufacturer's instructions.
4. Provide ponding area f tainment of treated ater before discharging
offsite.
5 Stor Wants in leak -proof containers that are kept understorrn-r nt cover
surrounded by secondary containment structures.
EQUIPMENT AND VEHICLE MAINTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide drip pans under any stored equipment.
3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the
project.
4. Collect all spent fluids, store in separate containers and properly dispose as
hazardous waste (recycle when possible).
5. Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products
to a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1. Never bury or burn waste. Place litter and debris in approved waste containers.
2. Provide a sufficient number and size of waste containers (e.g dumpster, trash
receptacle) on site to contain construction and domestic wastes,
3. Locate waste containers at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4. Locate waste containers on areas that do not receive substantial amounts of runoff
from upland areas and does not drain directly to a storm drain, stream or wetland.
5. Cover waste containers at the end of each workday and before storm events or
provide secondary containment. Repair or replace damaged waste containers.
6. Anchor all lightweight items in waste containers during times of high winds.
7. Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8. Dispose waste off -site at an approved disposal facility.
9. On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1. Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2. Locate paint washouts at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
3. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site.
5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1. Install portable toilets on level ground, at least 50 feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocation of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags.
2. Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3. Monitor portable toilets for leaking and properly dispose of any leaked material.
Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace
with properly operating unit.
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of
five feet from the toe of stockpile,
3. Provide stable stone access point when feasible.
4. Stabilize stockpile within the timeframes provided on this sheet and in accordance
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
fA{ ' '`' NORTH CAROLINA�AF
Environmental Quality
. .vim, 4,
I
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER
FfLIId
ELtli
SCOCETI VAPOR rnkrnm CD. TO Mr
atuov_sia r u iti_a itclu".t
aea
LOGIIM .,ow.
YAMS RN 0, TV
NCRETE WASHOUTS
Do not discharge concrete or cement slurry from the site.
pose of, or recycle settled, hardened concrete residue in accordance wit ocal
ate solid waste regulations and at an approved facility.
3. Mane:. washout from mortar mixers in accordance with the above i and in
addition .ce the mixer and associated materials on impervious b tier and within
lot perimete ilt fence.
4. Install tempora concrete washouts per local requirements here applicable. If an
alternate method product is to be used, contact your a • rroyal authority for
review and approval. local standard details are not a ifable, use one of the two
types of temporary con . to washouts provided on is detail.
5. Do not use concrete washo. 5 for dewatering or oring defective curb or sidewalk
sections. Stormwater accum ted within the ashout may not be pumped into or
discharged to the storm drain sy• m or re ving surface waters. Liquid waste must
be pumped out and removed from oje
6. Locate washouts at least 50 feet fro •rm drain inlets and surface waters unless it
can be shown that no other altersves reasonably available. At a minimum,
install protection of storm drain lets) dos • to the washout which could receive
spills or overflow.
7. Locate washouts in an ea ' accessible area, on le1 ground and install a stone
entrance pad in front n e washout. Additional co 'ols may be required by the
approving authority
8. Install at least on ign directing concrete trucks to thewa •ut within the project
limits. Post Sit age on the washout itself to identify this Coca
9 Remove le- ngs from the washout when at approximately 75% r scity to limit
overflo vents. Replace the tarp, sand bags or other temporary st ctural
comp . ents when no longer functional. When utilizing alternative or • oprieta ry
pructs. follow manufacturer's instructions.
10. the completion of the concrete work, remove remaining leavings and dis r . of
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturba
caused by removal of washout.
HERBICIDES. PESTICIDES AND RODENTICIDES
1. Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2. Store herbicides. pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
accidental poisoning.
3 Do not store herbicides, pesticides and rodenticides in areas where flooding is
possible or where they may spill or leak into wells, stormwater drains, ground water
or surface water. If a spill occurs, clean area immediately.
4. Do not stockpile these materials onsite.
H oxIC WASTE
1. Create designated ha
2. Place hazardous wast
3. D
e.
er cov dary containment.
azardous chemicals, drums or bagged materials Ire
collectio
round.
NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING
EFFECTIVE: 04/01 / 19
SEAL r
" 049073, `
,+`, CA S
� t+111tlltti �,•t+
.M.- A DA M `
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919, 361.5000
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS ILLC
Axiom Environmental, Inc
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19000-EC2
RAS
RHW
N.T.S.
02.18.2020
J
EROSION CONTROL
DETAILS
C6.15

PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF -INSPECTION
Self -inspections are required during normal business hours in accordance with the table
below. When adverse weather or site conditions would cause the safety of the inspection
personnel to be in jeopardy, the inspection may be delayed until the next business day on
which it is safe to perform the inspection. In addition, when a storm event of equal to or
greater than 1.0 inch occurs outside of normal business hours, the self -inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
Inspect
11).RxIngnsrir
maintained in
good working
order
Frequency
(during normal
business hours)
malty
Inspection records must include:
Daily rainfall amounts.
If no daily rain gauge observations are made during weekend or
holiday periods, and no individual day rainfall information is
available, record the cumulative rain measurement for those un
attended days (ant this will determine if a site inspection Is
needed). Days on which no rainfall nu:ulled shall be recorded as
"zero" The permittee may use another ram-momtonng device
reproved by the Dlvblen
f2). E&SC
Measures
; Al least once per
7 calendar days
and within 24
l hours of a ram
event? LO inch in
24 hours
1 frfoit1ihwtlgn aftfW measures inspected,
2 Dale and time of the inspection,
3 Name of the person performing the inspection,
4, Indication of whether the measures were operating
properly,
5 Description of maintenance needs for the measure,
6 ttf.;;ttptfaft. aulrhfntC, and dale of entreclign warms tarn
(a1 Slinglwernr
discharge
outfalls (SDCs)
'i At least once per
7 calendar days
and within 24
hours of a rain
event > 1.0 inch in
24 hours
1 Identification of the discharge outfalls Inspected,
2 Date and time of the insperiion,
3. Name of the person performing the inspection,
4 Evidence of indicators of stormwater pollution such as nil
sheen, floating or suspended solids or discoloration,
5. Indication of visible seditnent leaving the site,
6. Descrptlon, evidence, and date of corrective actions taken,
(4) Perimete• of
site
At least once per
7 calendar days
and within 24
hours of a rain
event > 1 0 inch in
24 horn
If visible sedimentation is found outside site limits, then a record
of the following shall he made:
1, Actions taken to clean up or stabilize the sediment that has left
the site limits,
2 Description, evidence, and dale of corrective actions taken, and
3 An explanation as to the actions taken to control future
releases
(5) Streams or
wetlands onsite
or of (site
(whore
accessible)
(6) Ground
stabilization
measut es
hr least nnre per
7 rnlrtndar days
and within 74
hour* nr.a rall.
event? 1.0 Inch In
24 hnuls
Nicer narh phase
nl graditlpt
If the stream or wetland has increased visible sedimentation or a
stream has visible increased turbidity from the construction
activity, then a record of the following shall be made:
1 Description, evidence and date of corrective actions taken, and
2 Records of the required reports to the appropriate Division
Regional Office per Part III, Section C, Item (2)(a) of this permit.
1. The phase of grading (Installation of perimeter E&SC
measut es, clearing and grubbing, installation of storm
drainage facilities, completion of all land -disturbing
activity, construction or redevelopment, permanent
ground cover).
2 Documentation that the required ground stabilization
measures have been provided within the required
timeframe or an assurance that they will be provided as
seen Al yusdhfe
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1. E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The
approved E&SC plan must be kept up-to-date throughout the coverage under this permit.
The following items pertaining to the E&SC plan shall be kept on site and available for
inspection at all times during normal business hours.
Item to Document
Documentation Requirements
(a) Each E$SC measure has been installed
and does not significantly deviate from the
locations, dimensions and relative elevations
shown on the approved E&SC plan.
Initial and date each E&SC measure on a copy
of the approved E&SC plan or complete, date
and sign an inspection report that lists each
E&SC measure shown on the approved E&SC
plan, This documentation is required upon the
initial installation of the E&SC measures or if
the E&SC measures are modified after initial
installation,
(b) A phase of grading has been completed.
Initial and date a copy of the approved E&SC
plan or complete, date and sign an inspection
report to indicate completion of the
construction phase.
(c) Ground cover is located and installed
in accordance with the approved E&SC
plan.
(d) The maintenance and repair
requirements for all E&SC measures
have been performed,
Initial and date a copy of the approved E&5C
plan or complete, date and sign an inspection
report to indicate compliance with approved
ground cover specifications.
Complete, date and sign an inspection report.
(e) Corrective actions have been taken
to E&SC measures.
Initial and date a copy of the approved E&SC
plan or complete, date and sign an inspection
report to indicate the completion of the
corrective action.
2. Additional Documentation to be Kept on Site
In addition to the E&SC plan documents above, the following items shall be kept on the
site and available for inspectors at all times during normal business hours, unless the
Division provides a site -specific exemption based on unique site conditions that make
this requirement not practical:
(a) This General Permit as well as the Certificate of Coverage, after it is received.
(b) Records of inspections made during the previous twelve months. The permittee shall
record the required observations on the Inspection Record Form provided by the
Division or a similar inspection form that includes all the required elements. Use of
electronically -available records in lieu of the required paper copies will be allowed if
shown to provide equal access and utility as the hard -copy records.
3. Documentation to be Retained for Three Years
All data used to complete the e-NOI and all inspection records shall be maintained for a period
of three years after project completion and made available upon request [40 CFR 122.41]
PART II, SECTION G, ITEM (4)
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT
Sediment basins and traps that receive runoff from drainage areas of one acre or more shall use outlet structures that withdraw water from the surface when these devices need to be drawn down
for maintenance or close out unless this is infeasible. The circumstances in which it is not feasible to withdraw water from the surface shall be rare (for example, times with extended cold Weather),
Non -surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met:
(a) The E&SC plan authority has been provided with documentation of the non -surface withdrawal and the specific time periods or conditions in which it will occur. The non -surface withdrawal
shall not commence until the E&SC plan authority has approved these items,
(b) The non -surface withdrawal has been reported as an anticipated bypass in accordance with Part III, Section C, Item (2)(c) and (d) of this permit,
(c) Dewatering discharges are treated with controls to minimize discharges of pollutants from stormwater that is removed from the sediment basin. Examples of appropriate controls include
properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems,
(d) Vegetated, upland areas of the sites or a properly designed stone pad is used to the extent feasible at the outlet of the dewatering treatment devices described in Item (c) above,
(e) Velocity dissipation devices such as check dams, sediment traps, and riprap are provided at the discharge points of all dewatering devices, and
(f) Sediment removed from the dewatering treatment devices described in Item (c) above is disposed of in a manner that does riot cause deposition of sediment into waters of the United States.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1. Occurrences that Must be Reported
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) Oil spills if:
• They are 25 gallons or more,
• They are less than 25 gallons but cannot be cleaned up within 24 hours,
• They cause sheen on surface waters (regardless of volume), or
• They are within 100 feet of surface waters (regardless of volume).
(c) Releases of hazardous substances in excess of reportable quantities tender Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117-3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S. 143-215.85.
(d) Anticipated bypasses and unanticipated bypasses.
(e) Noncompliance with the conditions of this permit that may endanger health or the
environment.
2. Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact
the appropriate Division regional office within the timeframes and in accordance with the
other requirements listed below. Occurrences outside normal business hours may also be
reported to the Department's Environmental Emergency Center personnel at (800)
858-0368.
Occurrence
(a) Visible sediment
deposition in a
stream or wetland
(h) Oi) spills and
release of
hazardous
Substances per Item
L(s)•(c) above
fc) Anticipated
Ityfiasses 14(1CFR
t 22.41.(m)(3)I
(0) Unantftipated
bypasses (no CFR
7 22.41(in)(3)1
(el Noncompliance
with the condItIttns
of this permit that
may endanger
hcatth or the
enyironmcnt140
CFR 122,4)(I)(7))
Reporting Timeframes (After Discovery) and Other Requirements
• Within 24 hours, an oral or electronic notification.
■ Within 7 calendar days, a report that contains a description of the
sediment and actions taken to address the cause of the deposition
Division staff may waive the requirement for a written report on a
case -by -case basis.
■ If the stream is named on the NC 303(d) list as impaired for sediment -
related causes, the permittee may be required to perform additional
monitoring, inspections or apply more stringent practices if staff
determine that additional requirements are needed to assure compliance
with the federal or state impaired• waters conditions.
■ Within 24 hours, an aral or electronic notification, The notification
shall include information about the date, time, nature, volume and
location of the spill cr release.
• A report at least ten days before the date of the bypass, 1f possible.
The report shall include an evaluation of the anticipated quality and
effect of the bypass.
• Within 24 hours, an Dral or electronic notification,
• Within 7 calendar days, a report that includes an evaluation of the
quality and effect of the bypass. _ _
• Within 24 hours, an oral or electronic notification.
• Within 7 calendar days, a report that contains a description of the
noncompliance, and its causes; the period of noncompliance,
including exact dates and times, and if the noncompliance has not
been corrected, the anticipated time noncompliance is expected to
continue; and steps taken or planned to reduce, eliminate, and
prevent reoccurrence of the noncompliance. [40 CFR 122,41(1)(6).
o Division staff may waive the requirement for a written report on a
CM- •[ale basis.
NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING
NORTH CAROLINA
,br' Environmental Quality
EFFECTIVE: 04/01/19
• SEAL r
049073 `4l• `
awthe
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 36L 5000
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19000-EC2
RAS
RHW
N.T.S.
02.18.2020
EROSION CONTROL
DETAILS
C6.16
1

*TYPICAL POOL CROSS-SECTION ORIENTATION IS FOR A MEANDER BEND
TOWARD STREAM RICHT AND SHALL BE MIRRORED FOR MEANDER BENDS
TOWARDS STREAM LEFT*
WFPA
VARIES
1% MIN.
WPOOL = 21.1 FT
dMAx = 2.0 FT
WFPA = 100 FT
VARIES
1% MIN.
Wbkf = 16.3 FT
dMAX = 1.5 FT
Abkr = 18.9 SF
dMEAN = 1.2 FT
WFPA = 100 FT
4.55' II
TYPICAL POOL
WFPA
_ i VARIES
VARIES
1% MN.
7.34
TYPICAL RIFFLE
FORK CREEK
N.T.S.
dMAX
1% MN.
i
*TYPICAL POOL CROSS-SECTION ORIENTATION IS FOR A MEANDER BEND
TOWARD STREAM RIGHT AND SHALL BE MIRRORED FOR MEANDER BENDS
TOWARDS STREAM LEFT*
VARIES
VARICS
WPooL = 6.5 FT
dMAX = 0.6 FT
WFPA = 25 FT
VARIES
VARIES
Wbkr = 5.0 FT
dMAx = 0.5 FT
Abkf = 1.8 SF
dMEyAN = 0.4 FT
WFPA = 25 FT
r
w! PA
Wynn! VARIES
VARIES
TYPICAL POOL
WJ3Kf
n
2.0
TYPICAL RIFFLE
UT 2
N.T.S.
dMAX
VARIES
VARIES
*TYPICAL POOL CROSS-SECTION ORIENTATION IS FOR A MEANDER BEND
TOWARD STREAM RIGHT AND SHALL BE MIRRORED FOR MEANDER BENDS
TOWARDS STREAM LEFT*
WPOOL = 13.8 FT
dMAx = 1.3 FT
WFPA = 100 FT
VARIES
1% MIN.
Wbkf = 10.6 FT
dMAX = 1.0 FT
Abkf = 8.1 SF
dMEAN = 0.8 FT
WFPA = 100 FT
2.9'
TYPICAL POOL
WFKF
TYPICAL RIFFLE
UT 1
N.T.S.
dMAX
*TYPICAL POOL CROSS-SECTION ORIENTATION IS FOR A MEANDER BEND
TOWARD STREAM RIGHT AND SHALL BE MIRRORED FOR MEANDER BENDS
TOWARDS STREAM LEFT*
WPOOL = 6.9 FT
dMAx = 0.6 FT
WFPA = 25 FT
VARIES
WBKF
WFPA
1.45'
TYPICAL POOL
F I y
VARIES
VARIES
Wbkr = 5.3 FT
dMAx = 0.5 FT
Abu = 2.0 SF
dMEAN = 0.4 FT
WFPA = 25 FT
3:
dMAx
TYPICAL RIFFLE
UT3&4
N.T.S.
I JPR1'C5
VARIES
s‘0 1 A ►.
s l•►►
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SEAL -57'
I 049073 ,� 1-
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M CA DA M
The John R. McAdams Company, Inc,
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-D1
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02.18.2020
STREAM
DETAILS
C8.00

GENERAL NOTES:
1. A LOG 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. A NOTCH MAY BE CUT INTO THE LOG ATTHE
INVERT LOCATION. 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 INSTALLATION WITHIN THE TOLERANCE SPECIFIED BY THE DESIGNER.
3. THE VANE ARM SHALL BE SLOPED 3-5% AND 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 NECESSARILY THE TOP OF THE STREAM BANK SLOPE.
4. IF THE PLANS DESIGNATE THE USE OF MULTIPLE LOG CROSS VANES A TABLE 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 LOG CROSS VANES ARE
TO BE INSTALLED.
6. LOGS SHALL BE RELATIVELY STRAIGHT HARDWOOD, RECENTLY HARVESTED AND BE A MINIMUM OF 18" DIAMETER. THE LENGTH SHALL BE SUCH THAT THE LOG IS BURIED INTO THE SOIL OF THE
STREAM BANK (ON ONE END) AND STREAM BED (ON THE OTHER END) A MINIMUM DISTANCE AS SPECIFIED BY THE DESIGNER. THE INVERT LOG SHALL BE KEYED INTO THE BANK A MINIMUM 2
FEET PAST TOP OF BANK WIDTH.
7. A SINGLE LOG MAY BE USED IN LIEU OF A HEADER/FOOTER LOG COMBINATION. A DOUBLE FOOTER LOG MAY BE REQUIRED IN SAND BED STREAMS.
8. NON -WOVEN GEOTEXTILE FABRIC OF A TYPE AND SIZE SPECIFIED BY THE DESIGNER SHALL BE USED TO SEAL THE GAPS BETWEEN THE LOG(S) AND THE STREAM BED, 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.
9. COARSE BACKFILL OF THE LOG CROSS VANE SHALL BE OF A TYPE, SIZE, AND GRADATION AS SPECIFIED BY THE DESIGNER. COARSE BACKFILL SHALL BE PLACED TO A THICKNESS EQUAL TO THE
DEPTH OF THE HEADER (AND ANY FOOTER) LOGS AND SHALL EXTEND OUT FROM THE VANE ARMS TO THE STREAM BANK AND UPSTREAM A DISTANCE SPECIFIED BY THE DESIGNER.
10. AS AN OPTION, FLAT -SIDED BOULDERS OF A SIZE (LENGTH, WIDTH, AND THICKNESS) AS SPECIFIED BY THE DESIGNER MAY BE PLACED AS BALLAST ON TOP OF THE STREAM BANK SIDE OF THE
EMBEDDED VANE ARMS. DUCK BILL ANCHORS MAY BE USED IN LIEU OF BALLAST BOULDERS.
11. DUCKBILL ANCHORS WITH GALVANIZED CABLE ATTACHED (OF A GAGE ADEQUATE TO SECURE THE SPECIFIED DIAMETER LOG) MAY BE USED TO SECURE LOGS INTO THE STREAM BED AND/OR
BANKS TO THE SPECIFIED DEPTH. FLAT SIDED BOULDERS (LENGTH, WIDTH, AND THICKNESS SPECIFIED BY DESIGNER) CAN BE USED IN LIEU OF THE LOG INVERT/DUCKBILL ANCHOR SYSTEM.
CONSTRUCTION GUIDELINES:
1. THE VANE ARMS OF THE LOG CROSS VANE SHALL BE CONSTRUCTED FIRST, FOLLOWED BY THE LOG INVERT.
2. OVER -EXCAVATE STREAM BED TO A DEPTH EQUAL TO THE TOTAL THICKNESS OF THE HEADER (AND FOOTER IF SPECIFIED) LOGS.
3. PLACE VANE ARM FOOTER LOGS, IF SPECIFIED. THE SLOPE OF THE VANE ARM IS MEASURED ALONG THE VANE ARM WHICH IS INSTALLED AT AN ANGLE TO THE STREAM BANK AND PROFILE
4. INSTALL VANE ARM HEADER LOG ON TOP OF AND SET SLIGHTLY FORWARD OR BACK FROM THE FOOTER LOG.
5. INSTALL INVERT LOG AND DUCKBILL ANCHOR.
6. NAIL FILTER FABRIC TO THE HEADER LOG USING A GALVANIZED NAIL WITH A PLASTIC CAP. THE SIZE AND GAGE OF NAIL AND NAIL SPACING SHALL BE SPECIFIED BY THE DESIGNER.
7. PLACE COARSE BACKFILL BEHIND LOG(S) ENSURING THAT ANY VOIDS BETWEEN THE LOGS ARE FILLED.
8. IF ANY EROSION CONTROL MATTING IS SPECIFIED FOR USE IN THE VICINITY OF THE VANE ARM INTERCEPT POINTS, ALL MATTING EDGES SHALL BE NEATLY SECURED AROUND THE LOGS.
TRIBUTARY
Wbkf (FT)
FORK CREEK
16.3
UT1
10.6
UT2
5.0
UT3 & UT4
5.3
FLOW
HEADER LOG
COIR LOG
RIFFLE MATERIAL
#57 STONE/NATIVE
CHANNEL MATERIAL
NON WOVEN
GEO-TEXTILE FABRIC
Wbkf Wbkf Wbkf J (TYP.)
NON WOVEN
GEO-TEXTILE
BACKFILLED AND FABRIC (TYP.)
COMPACTED
WITH NATIVE
CHANNEL
MATERIAL
PLAN VIEW
LOG SILL
HEADER LOG
FOOTER LOG-
COIR-
HEADER LOG LOG
MIN. 18"
FOOTER LOG
MIN. 18"
STREAMBED
ELEVATION
LOG CROSS VANE DETAIL
N.T.S.
FLOW
SECTION A - A
\L-NON WOVEN
GEO-TEXTILE FABRIC
(TYP.)
SECTION B - B
TOP OF BANK
(BANKFULL)
STREAMBED
ELEVATION
TOP OF BANK
(BANKFULL)
EXISTING GROUND
(TYP.)
BAC/SFILLED AND COMPACTED
WITH NATIVE CHANNEL
MATERIAL
NOTE: GEOTEXTILE FABRIC (NON -WOVEN) SHALL CONFORM TO THE FOLLOWING SPECIFICATIONS.
MECHANICAL PROPERTIES
TEST METHOD
UNIT
MINIMUM AVERAGE ROLL
VALUE
MD
CD
GRAB TENSILE STRENGTH
ASTM D 4632
N (Ibs)
912 (205)
912 (205)
GRAB TENSILE ELONGATION
ASTM D 4632
%
50
50
TRAPEZOID TEAR STRENGTH
ASTM D 4533
N (Ibs)
356 (80)
356 (80)
CBR PUNCTURE STRENGTH
ASTM D 6241
N (Ibs)
2225 (500)
APPARENT OPENING SIZE (AOS)i
ASTM D 4751
mm (U.S SIEVE)
0.18 (80)
PERMITTIVITY
ASTM D 4491
sec -1
1.1
FLOW RATE
ASTM D 4491
I/min/m' (gal/min/ft')
3870 (95)
UV RESISTANCE (AT 500 HOURS)
ASTM D 4355
% STRENGTH RETAINED
70
1ASTM D 4751: AOS IS A MAXIMUM OPENING DIAMETER VALUE
PHYSICAL PROPERTIES
TEST METHOD
UNIT
TYPICAL VALUE
WEIGHT
ASTM D 5261
g/m' (oz/yd')
271 (8.0)
THICKNESS
ASTM D 5199
mm (mils)
1.8 (72)
ROLL DIMENSIONS (WIDTH X LENGTH)
-
ft
12.5 X 360 15 X 300
1
ROLL AREA
-
m' (yd')
418 (500)
ESTIMATED ROLL WEIGHT
-
kg (lb)
120 (265)
NON -WOVEN GEOTEXTILE FABRIC
MATERIAL SPECIFICATIONS
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The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-D1
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02.18.2020
STREAM
DETAILS
C8.01
1

GENERAL NOTES
1. LOG VANES WILL BE ANGLED @20-30° FROM STREAM BANK.
2. LOG VANES SHALL BE LARGE ENOUGH TO OCCUPY 3 OF THE POOL MAXIMUM DEPTH.
3. LOG VANE WILL BE SLOPED AT3-5%.
4. SEED AND SOIL STABILIZATION MATTING WILL BE PLACED ALONG STREAM BANKS FOR STABILIZATION PURPOSES WHERE DISTURBANCES HAS OCCURRED AS A RESULT STRUCTURE INSTALLATION.
5. DESIGN ENGINEER SHALL CONSIDER IMPLEMENTATION OF OTHER STREAM BANK PROTECTION MEASURES IN CONJUNCTION WITH LOG VANE STRUCTURE.
CONSTRUCTION GUIDELINES
1. ALL EROSION AND SEDIMENT CONTROL DEVICES SHOULD BE INSTALLED IN ACCORDANCE WITH AN APPROVED EROSION AND SEDIMENT CONTROL (E&SC) PLAN.
2. FLOW FROM THE STREAM SHOULD BE DIVERTED AWAY FROM THE WORK AREA IN ACCORDANCE WITH THE APPROVED E&SC PLAN AND THE SITE SHOULD BE DEWATERED.
3. LOG VANES SHOULD BE ANGLED 20 TO 30 DEGREES FROM THE UPSTREAM BANK. LOG VANE ARMS SHOULD BE INSTALLED WITH A VERTICAL ANGLE ALONG THE VANE ARM RANGING FROM 3 TO 5
PERCENT. LOG VANES SHOULD SPAN APPROXIMATELY ONE-HALF TO TWO-THIRDS OF THE BANKFULL CHANNEL WIDTH.
4. EXCAVATE THE TRENCH AND PREPARE THE AREA ALONG THE STREAMBANK AND IN THE STREAMBED FOR PLACEMENT OF FOOTER ROCKS. FOOTER ROCKS SHOULD BE INSTALLED AT BOTH THE
STREAMBANK AND THALWEG LOCATIONS TO ENSURE PROPER FOOTING OF THE LOG VANE STRUCTURE AND TO ELIMINATE SCOUR AT KEY TIE-IN POINTS.
5. PLACE LOG ONTO THE FOOTER ROCKS SUCH THAT THE LOG VANE ARM THAT TIES INTO THE STREAMBANK WILL BE INSTALLED AT THE BANKFULL ELEVATION AND THE OTHER END OF THE LOG VANE
ARM WILL BE EMBEDDED INTO THE STREAMBED AT THE THALWEG ELEVATION AND WILL BE LOCATED WITHIN THE MIDDLE THIRD OF THE BANKFULL CHANNEL WIDTH.
6. ANCHOR ROCKS SHOULD BE INSTALLED ON TOP OF BOTH ENDS OF THE LOG VANE. ANCHOR STONES IN THE STREAMBED WILL BE OFFSET TO THE UPSTREAM SIDE OF THE LOG VANE AND PLACED TO
MINIMIZE ROLLING OF ANCHOR STONE AND WILL NOT PROTRUDE FROM THE STREAMBED ELEVATION MORE THAN ONE-THIRD THE THICKNESS OF THE ANCHOR ROCK. ANCHOR ROCKS WILL BE PLACED
ALONG THE STREAMBANK POSITION OF THE LOG VANE ARM IN SIMILAR FASHION AND WILL NOT EXTEND MORE THAN ONE-THIRD THE THICKNESS OF THE ANCHOR ROCK.
7. THE LOG VANE ARM THAT TIES INTO THE STREAMBANK SHOULD EXTEND A MINIMUM OF 5 TO 6 FEET INTO THE STREAMBANK. ADDITIONALLY THE THALWEG END OF THE STRUCTURE SHOULD BE
EMBEDDED A MINIMUM OF 2 TO 3 FEET. WHEN TWO LOGS ARE USED TO ACCOMPLISH THE DESIGN SPECIFICATION OF THE LOG VANE, THE LOGS SHOULD BE SECURED TOGETHER WITH CABLES OR
REBAR MATERIAL BASED UPON MANUFACTURING SPECIFICATIONS. LOG VANES SHOULD BE ANCHORED INTO THE STREAMBED WITH SUPPORT PILINGS AND/OR DUCKBILL ANCHORS WITH LENGTHS
EXCEEDING THE POTENTIAL OF LONG-TERM BED DEGRADATION AND/OR SCOUR DEPTHS.
8. PLACEMENT OF SALVAGED STREAMBED MATERIAL OBTAINED DURING TRENCH EXCAVATIONS WILL BE PLACED ALONG THE UPSTREAM SIDE OF THE LOG VANE ARM AND BETWEEN THE STREAMBANK
TO CREATE A UNIFORM SLOPE BETWEEN THE LOG VANE ARM AND THE STREAMBANK. AT THE MINIMUM, STREAMBED GRAVEL WILL BE PLACED TO THE ELEVATION OF THE SLOPING LOG VANE ARM ON
THE UPSTREAM SIDE OF THE LOG VANE,
9. SOIL STABILIZATION MATTING WILL BE INSTALLED ALONG THE STREAMBANKS IN THE AREA OF DISTURBANCES AND SHOULD BE SEEDED, MULCHED, AND PLANTED WITH APPROVED LANDSCAPING.
10. REMOVE THE APPROVED E&SC PLAN DEVICES UPON STABILIZATION OF THE CHANNEL IN ACCORDANCE WITH THE APPROVED PLAN.
ANCHOR STONE
CONTROL POINT TO BE
LOCATED APPROXIMATELY
AT CHANNEL MID —POINT
RIGHT BANKFULL
ELEVATION LINE
T.
FLOW
20'-30'
WBKF
LEFT BANKFULL
ELEVATION LINE
PLAN VIEW
STREAMBED MATERIAL TO BE USED TO
BACKFILL BEHIND LOG VANE ARM AND
BRING TO ELEVATION OF LOG VANE ARM
CONTROL POINT TO BE
LOCATED APPROXIMATELY AT
CHANNEL MID —POINT
BANKFULL/FLOODPLAIN
ELEVATION
ANCHOR STONE TO BE
PRESENT IN MIDDLE
THIRD OF CHANNEL AT
STREAMBED ELEVATION
THIS PORTION OF
LOG ANCHORED IN
CHANNEL BED
LOG VANE DETAIL
N.T.S.
WBKF
TRIBUTARY
Wbkf (FT)
FORK CREEK
16.3
UT1
10.6
UT2
5.0
UT3 & UT4
5.3
BANKFULL/FLOODPLAIN
ELEVATION
ANCHOR STONE
FOOTER STONE
(TYP.)
EROSION CONTROL -
BLANKET (TYP.)
SEE DETAIL SHEET C8.06
SECTION A' - A'
THIS PORTION OF LOG
SECURED BY ANCHOR STONE.
ANCHOR STONE INSTALLED AT
APPROX. FLOODPLAIN GRADE
TOP OF BANK
NNV8 AO d01
TOP OF
BANK (TYP)
WIDTH VAIRES PER
FIELD CONDITIONS
TOP O RANK
6"-8" THICK
1 TO Dmax
CONCENRATED
FLOODPLAIN
FLOW
CLASS A/B
RIP RAP
TOE OF
BANK (TYP)
TOE OF BANK
SECTION B - B'
LENGTH VAIRES PER
FIELD CONDITION
6"-8" THICK
10% SLOPE MAX
SECTION A - A'
ROCK FLOODPLAIN OUTELT
N.T.S.
NOTE:
1. CONSTRUCT ROCK FLOODPLAIN OUTLETS WHERE CONCENTRATED FLOWS IN
THE FLOODPLAIN ENTER THE DESIGN CHANNEL.
2. MAKE ADJUSTMENTTO THE LOCATION OF ROCK FLOODPLAIN OULETS SHOWN
IN THE PLANS BASED ON FIELD CONDITIONS ATTHE TIME OF CONSTRUCTION.
3. THE ENGINEER ON SITE MAY MAKE CHANGES TO THE QUANTITY AND
LOCATION OF ROCK FLOODPLAIN OUTLETS BASED ON FIELD CONDITIONS AT
THE TIME OF CONSTRUCTION.
CLASS A/B
RIP RAP
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The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361, 5000
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
• SYSTEMS ILLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19000-D1
RAS
RHW
N.T.S.
02.18.2020
STREAM
DETAILS
C8.02

GENERAL NOTES:
1. A DROP STRUCTURE IS A LOG SILL COUPLED WITH A CONSTRUCTED RIFFLE TO PROVIDE GRADE CONTROL.
2. AN ELEVATION CONTROL POINT SHALL BE DESIGNATED AT THE CENTER OF THE LOG TO ESTABLISH PART OF THE PROFILE. SURVEY OF CONTROL POINTS SHALL BE REQUIRED TO ESTABLISH ACCURATE INSTALLATION WITHIN THE TOLERANCE SPECIFIED BY THE DESIGNER.
3. NO PART OF THE LOG SHALL BE PLACED ABOVE THE ELEVATION OF THE STREAM BED.
4. MAXIMUM ELEVATION DROP BETWEEN EACH LOG STEP SHALL BE 0.3' -0.5'.
5. REFER TO THE PLAN -PROFILE FOUND ON SHEET C5.04 FOR THE STATION LOCATIONS AND CONTROL POINT ELEVATIONS OF EACH LOG SILL SPECIFIED FOR THE PROJECT.
6. LOGS SHALL BE OF A LENGTH AND DIAMETER SPECIFIED BY THE DESIGNER AND BE ROT -RESISTANT, RELATIVELY STRAIGHT HARDWOOD, RECENTLY HARVESTED. USE LOGS HARVESTED FROM THE PROJECT SITE WITHIN THE LIMITS OF DISTURBANCE, THE LENGTH OF THE LOG EMBEDDED INTO EACH BANK SHALL EQUAL OR
EXCEED THE DIMENSIONS SHOWN IN SECTION B'-B' OF THIS DETAIL.
7. NON -WOVEN GEOTEXTILE FABRIC OF A TYPE AND SIZE SPECIFIED BY THE DESIGNER SHALL BE USED TO SEAL THE GAPS BETWEEN THE LOG(S) AND THE STREAM BED, UNDER THE COARSE BACKFILL MATERIAL. THE FABRIC SHALL BE NAILED TO THE ENTIRE LENGTH OF THE LOG USING A GALVANIZED NAIL WITH A PLASTIC CAP.
THE SIZE AND GAGE OF NAIL AND NAIL SPACING SHALL BE SPECIFIED BY THE DESIGNER. 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 LOG SILL SHALL BE OF A TYPE, SIZE, AND GRADATION AS SPECIFIED BY THE DESIGNER. COARSE BACKFILL SHALL BE PLACED TO A THICKNESS EQUAL TO THE DEPTH OF THE HEADER (AND ANY FOOTER) LOG AND SHALL EXTEND UPSTREAM FROM THE SILL A DISTANCE SPECIFIED BY THE DESIGNER.
9. SOIL WHERE THE LOGS ARE KEYED IN SHOULD BE COMPACTED. LARGER BOULDERS CAN BE USED TO KEEP THE LOGS IN PLACE WHERE NECESSARY.
10. EXCAVATED CHANNEL MATERIAL DEEMED SUITABLE FOR USE (FREE OF WASTE AND DEBRIS) IS PLACED AROUND THE LOGS TO BRING THE RIFFLE TO FINAL GRADE.
11. RIFFLE ARMOR DEPTH SHALL BE A MINIMUM OF 1.5 FEET.
12. EXTEND RIFFLE ARMOR UP TO HALF BANKFULL DEPTH MAINTAINING DESIGN CHANNEL DIMENSIONS.
13. RIFFLE SURFACE STONE SHALL BE NATIVE CHANNEL MATERIAL. RIFFLE SUBGRADE MATERIAL SHALL BE NCDOT CLASS 'B' RIPRAP OR RIVER COBBLE OF EQUIVALENT SIZE AND HAVE AN AVERAGE DIAMETER OF 8". NATIVE CHANNEL MATERIAL FROM THE EXISTING CHANNEL SHALL BE USED WHENEVER POSSIBLE.
14. GRAVEL SUBSTRATE FROM THE EXISTING CHANNEL SHALL BE STOCKPILED AND REUSED AS SURFACE STONE IN THE NEW CHANNEL. GRAVEL SHALL BE PLACED AT EACH RIFFLE LOCATION IN ACCORDANCE WITH THE GRADATION SHOWN ON THESE PLANS. SOME EXCAVATION OF CHANNEL BED MATERIAL MAY BE NECESSARY
PRIOR TO PLACEMENT OF RIFFLE TO ENSURE PROPER CROSS -SECTIONAL DIMENSIONS ONCE RIFFLE IS CONSTRUCTED. RE -DRESSING OF CHANNEL AND BANKS MAY BE REQUIRED FOLLOWING CONSTRUCTION OF RIFFLES AND CHANNEL.
CONSTRUCTION GUIDELINES:
1. STREAM SHALL BE DIVERTED AWAY FROM THE WORK AREA AND THE SITE SHALL BE DEWATERED.
2. OVER -EXCAVATE STREAM BED TO A DEPTH EQUAL TO THE TOTAL THICKNESS AND LENGTH OF THE HEADER LOGS,
3. PLACE HEADER LOGS AS SHOWN IN THIS DETAIL WITHIN THE EXCAVATED TRENCH. PLACE LOGS AT ANGLES ALONG THE LENGTH OF THE RIFFLE (MAX 2% SLOPE) , KEYED INTO THE BANKS INTO EACH BANK SHALL EQUAL OR EXCEED THE DIMENSIONS
SHOWN IN SECTION B'-B' OF THIS DETAIL A LAYER OF BEDDING MATERIAL UNDER THE LOG MAY BE SPECIFIED BY THE DESIGNER. THE TOP OF THE HEADER LOG SHALL CONFORM TO THE STREAM BED ELEVATION AT THE LOCATION WHICH IT IS PLACED. SET
LOG INVERTS AT ELEVATIONS SHOWN ON THE PLAN AND PROFILE SHEETS. NO ELEVATIONS OF THE LOGS MAY VARY FROM THE PLAN SHEETS WITHOUT DIRECTION FROM THE ENGINEER.
4. SECURE LOG(S) WITH ANCHORS AT MAXIMUM SPACING OF 2 FEET ON CENTER. ANCHORS SHALL BE 4" DIAMETER MINIMUM REBAR OR DRIFT PIN. ANCHOR MUST HAVE SUFFICIENT LENGTH TO PASS THROUGH BOTH LOGS AND ENTER THE GROUND AT
LEAST 6 INCHES.
5. PLACE FILTER FABRIC BEHIND LOG SILL AND ALONG THE BOTTOM OF THE STREAM BED. NAIL FILTER FABRIC TO THE HEADER LOG.
6. PLACE COARSE BACKFILL BEHIND LOG(S) ENSURING THAT ANY VOIDS BETWEEN THE LOGS ARE FILLED.
7. TRIM ANY EXPOSED FILTER FABRIC AROUND THE SILL INSTALLATION. CHECK PROPER FUNCTION/FLOW PATH BY OBSERVING FLOW OVER STRUCTURE. REPAIR AS NEEDED TO ENSURE PROPER FUNCTION.
8. ENSURE NO LEAKAGE/FLOW UNDER OR AROUND STRUCTURE BY PROPERLY GRADING, SEALING, AND COMPACTING UNDER AND AROUND THE STRUCTURE.
9. REPEAT STEPS FOR ALL LOG INSTALLATION, THEN INSTALL RIFFLE SUBSTRATE PER THE DIMENSIONS SHOWN ON THE DETAIL. RIFFLE MATERIAL SHALL BE PLACED AT A UNIFORM THICKNESS SUCH THAT, IN CROSS SECTION, ITS LOWEST ELEVATION OCCURS IN
THE CENTER OF THE CHANNEL. RIFFLE MATERIAL SHALL BE COMPACTED USING AN EXCAVATOR BUCKET SUCH THAT FUTURE SETTLEMENT OF THE MATERIAL IS KEPT TO A MINIMUM.
10. EROSION CONTROL BLANKET SHALL BE INSTALLED IN AREAS SHOWN ON THIS DETAIL AND IN COMPLIANCE WITH INSTALLATION INSTRUCTIONS ON THE EROSION CONTROL DETAIL ON SHEET C6.14. ENSURE EROSION CONTROL BLANKET WRAPS THE TOE OF
THE STREAM BED ON EACH BANK IN THE AREA AND ALL MATTING EDGES SHALL BE NEATLY SECURED AROUND THE LOGS.
11. INSTALL NATIVE CHANNEL MATERIAL ON THE DOWN SLOPE OF EACH LOG. NATIVE CHANNEL MATERIAL TO BE FLUSH WITH THE CHANNEL BANK FACE.
EROSION
CONTROL
BLANKET
(SEE DETAIL
SHEET C6.14)
RIFFLE
SURFACE
STONE TO BE
NATIVE
CHANNEL
MATERIAL
RIFFLE
SUBSTRATE
NCDOT CLASS
'B' RIP RAP
OR RIVER
COBBLE OF
EQUIVALENT
SIZE
PLAN VIEW
LOGS MIN 18"
DIAMETER KEYED IN
MIN 5' BOTH BANKS
NATIVE CHANNEL
MATERIAL TO PROTECT
BANKS ON THE
DOWNSLOPE OF LOGS
TOE OF CHANNEL
SLOPE
BANKFULL
NOTE: REFER TO PLAN
AND PROFILE SHEET C5.04
FOR NUMBER OF LOG
SILLS, STATION
LOCATIONS, AND
CONTROL POINT
ELEVATIONS FOR EACH
DROP STRUCTURE
SPECIFIED FOR THE
PROJECT
NATIVE CHANNEL
MATERIAL TO PROTECT
BANKS ON THE
DOWNSLOPE OF LOGS
MIN 18"
DIAMETER
LOG
DROP STRUCTURE DETAIL
N.T.S.
STREAMBED
ELEVATION
FLOW
0.3'-0.5'(MAX)
RIFFLE SUBSTRATE
DEPTH MIN. = 1.5'
MIN. 5'
SECTION A - A
SECTION B - B
LOG INVERT CONTROL POINTS
SEE SHEET C5.04 FOR
ELEVATIONS
- RIFFLE SURFACE
STONE
TOE OF SLOPE
TOP OF BANK
MIN. 5'
TRIBUTARY
BOTTOM
CHANNEL
AH N L
Wbkf(FT)WI
MIN. LOG
LENGTH (FT)
FORK CREEK
9.1
16.3
20.0
UT1
5.8
10.6
16.0
UT2
2.6
5.0
13.0
UT3 & UT4
2.9
5.3
13.0
TRIBUTARY
DROP
STRUCTURE
NUMBER OF
LOG SILLS
PLAN SHEET
FORK CREEK
#22
10
C5.04
EROSION CONTROL
BLANKET
(SEE DETAIL
SHEET C8.06)
7
SEAL
= 049073,��
�'..�.:;G N�3. � as � •`.
4aa�aarM
McADAM
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS ILLC
Axiom Environmental, Inc,
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19000-D 1
RAS
RHW
N.T.S.
02.18.2020
STREAM
DETAILS
C8.03

GENERAL NOTES:
1. A BOULDER OR LOG SILL MAY BE USED ALONE OR IN COMBINATION WITH A CONSTRUCTED RIFFLE. CONTRACTOR TO CONSULT
DESIGN ENGINEER FOR FINAL MATERIAL SPECIFICATIONS.
2. AN ELEVATION CONTROL POINT SHALL BE DESIGNATED AT THE CENTER OF THE SILL 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 INSTALLATION WITHIN THE
TOLERANCE SPECIFIED BY THE DESIGNER.
3. NO PART OF THE SILL SHALL BE PLACED ABOVE THE ELEVATION OF THE STREAM BED.
4. REFER TO THE PLAN -PROFILE FOUND ON SHEETS C5.08 AND C5.10 FOR THE STATION LOCATIONS AND CONTROL POINT ELEVATIONS
OF EACH BOULDER SILL SPECIFIED FOR THE PROJECT.
5. ALL BOULDERS SHALL CONSIST OF ANGULAR, TABULAR, FLAT ROCK WITH MINIMUM OF TWO PARALLEL SIDES, AND HAVE A
NATURAL APPEARANCE AND COLOR. ROUNDED EDGES ARE ACCEPTABLE SO LONG AS ROUNDED EDGES ARE NOT BEARING OR
SUPPORTING. APPROXIMATE DIMENSIONS OF BOULDERS SHALL MEASURE IN LENGTH, WIDTH, AND HEIGHT SPECIFIED IN THE TABLE
BELOW. ALL STONE SHALL BE FREE FROM LAMINATION AND WEAK CLEAVAGES. THE STONE SHOULD NOT DISINTEGRATE
SIGNIFICANTLY FROM THE ACTION OF AIR, WATER, OR IN HANDLING AND PLACING. STONE WITH TOOL MARKS, DRILL HOLES, AND
OTHER BLASTING EVIDENCE SHALL NOT BE UTILIZED IN EXPOSED LOCATIONS.
6. FILTER FABRIC OF A TYPE AND SIZE SPECIFIED BY THE DESIGNER SHALL BE USED TO SEAL THE GAPS BETWEEN THE BOULDERS AND
THE STREAM BED, 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.
7. BACKFILL ROCK ON THE UPSTREAM SIDE OF THE STRUCTURE SHALL BE NATIVE CHANNEL MATERIAL OR RIVER COBBLE OF
EQUIVALENT SIZE AND HAVE AN AVERAGE DIAMETER OF 8". SMALLER AGGREGATE (I.E. NO. #57) OR COBBLE STONES SHALL BE USED
TO FILL VOIDS SUCH THAT EACH BOULDER RESTS SOLIDLY ON THE PREVIOUS ROCK LAYER WITH MINIMAL OPPORTUNITY FOR
MOVEMENT.
CONSTRUCTION GUIDELINES:
1. STREAM SHALL BE DIVERTED AWAY FROM THE WORK AREA AND THE SITE SHALL BE DEWATERED.
2. EXCAVATE TRENCH FOR FOOTER ROCKS TO THE ELEVATION AND GRADES NECESSARY FOR PLACEMENT OF BOTH FOOTER AND
HEADER BOULDER SO THAT THE DESIRED ELEVATION OF THE HEADER BOULDER MEETS THE LINES AND GRADES OF THE
STRUCTURE SCHEDULE IN ACCORDANCE WITH THE PLANS AND PROFILES.
3. PLACE FOOTER BOULDERS IN EXCAVATED TRENCH WITH ADJACENT BOULDERS ABUTTING EACH OTHER. FOOTER BOULDERS
SHALL BE PLACED NEATLY SO THAT THE HEADER BOULDERS CAN REST SECURELY ON TWO FOOTER BOULDERS. SMALLER ROCK
SHALL BE USED TO FILL VOID SPACES 50 THAT EACH BOULDER RESTS SOLIDLY ON THE PREVIOUS BOULDER WITH MINIMAL
OPPORTUNITY FOR MOVEMENT.
4. BOULDER SILL ROCKS WILL TIE INTO THE CHANNEL BOTTOM ELEVATION AT THE LOCATION OF EACH SILL AND EXTEND INTO THE
STREAMBANK A MINIMUM OF 5' UNLESS OTHERWISE SPECIFIED BY THE DESIGNER.
5. PLACE FILTER FABRIC BEHIND BOULDER SILL AND ALONG THE BOTTOM OF THE STREAM BED.
6. PLACE COARSE BACKFILL BEHIND BOULDERS ENSURING THAT ANY VOIDS BETWEEN THE ROCKS ARE FILLED.
7. TRIM ANY EXPOSED FILTER FABRIC AROUND THE SILL INSTALLATION. CHECK PROPER FUNCTION/FLOW PATH BY OBSERVING FLOW
OVER STRUCTURE. REPAIR AS NEEDED TO ENSURE PROPER FUNCTION.
8. ENSURE NO LEAKAGE/FLOW UNDER OR AROUND STRUCTURE BY PROPERLY GRADING, SEALING, AND COMPACTING UNDER AND
AROUND THE STRUCTURE.
9. EROSION CONTROL BLANKET SHALL BE INSTALLED IN AREAS SHOWN ON THIS DETAIL AND IN COMPLIANCE WITH INSTALLATION
INSTRUCTIONS ON THE EROSION CONTROL DETAIL ON SHEET C6.14.
TRIBUTARY
BOTTOM
CHANNEL
WIDTH (FT)
Wbkf(FT)
MIN. SILL
LENGTH (FT)
FORK CREEK
9.1
16.3
20.0
UT1
5.8
10.6
16.0
UT2
2.6
5.0
13.0
UT3 & UT4
2.9
5.3
13.0
TRIBUTARY
BOULDER
LENGTH*
(FT)
BOULDER
WIDTH*
(FT)
BOULDER
HEIGHT*
(IN)
FORK CREEK
3.5
3.5
12.0
UT1
3.0
3.0
12.0
UT2
3.5
3.5
12.0
UT3 & UT4
3.5
3.5
12.0
*MINIMUM DIMENSIONS SHOWN
TOE OF BANK
(TYP. )
TOP OF BANK
(TYP.) �I
SILL CONTROL
POINT SEE SHEETS
C5.08 AND C5.10
FOR ELEVATION
VANE ARM MAY BE
CONSTRUCTED OF LOG OR
STONE
STREAM BANK
(TYP.)
SILL STEP DETAIL
N.T.S.
T
1
HEADER BOULIbER
(DIMENSIONS EE TABLE)
FOOTER BOII! LDER
(DIMENSIONS SEE TABLE)
-.J
- NATIVE CHANNEL
MATERIAL IS TO BE
PLACED ALONG THE BANK
IMMEDIATELY UPSTREAM
OF THE SILL
NON -WOVEN GEOTEXTILE AND
CLASS 'A' STONE (OR
EQUIVALENT) ON UPSTREAM
OF VANE ARMS
Iluu
s
= !�` SEAL 1
049073 A E.
The John R McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361_ 5000
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
R ESTORATTON
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19000-D1
RAS
RHW
N.T.S.
02.18.2020
STREAM
DETAILS
C8.04

GENERAL NOTES:
1. A BOULDER SILL MAY BE USED ALONE OR IN COMBINATION WITH A CONSTRUCTED RIFFLE. CONTRACTOR TO CONSULT DESIGN ENGINEER
FOR FINAL MATERIAL SPECIFICATIONS
2. AN ELEVATION CONTROL POINT SHALL BE DESIGNATED AT THE CENTER OF THE SILL 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 INSTALLATION WITHIN THE TOLERANCE
SPECIFIED BY THE DESIGNER.
3. NO PART OF THE SILL SHALL BE PLACED ABOVE THE ELEVATION OF THE STREAM BED.
4. REFER TO THE PLAN -PROFILE FOUND ON SHEETS C5.07 AND C5,08 FOR THE STATION LOCATIONS AND CONTROL POINT ELEVATIONS OF
EACH BOULDER SILL SPECIFIED FOR THE PROJECT.
5. ALL BOULDERS SHALL CONSIST OF ANGULAR, TABULAR, FLAT ROCK WITH MINIMUM OF TWO PARALLEL SIDES, AND HAVE A NATURAL
APPEARANCE AND COLOR. ROUNDED EDGES ARE ACCEPTABLE SO LONG AS ROUNDED EDGES ARE NOT BEARING OR SUPPORTING.
APPROXIMATE DIMENSIONS OF BOULDERS SHALL MEASURE IN LENGTH, WIDTH, AND HEIGHT AS SPECIFIED IN THE TABLE BELOW. ALL
STONE SHALL BE FREE FROM LAMINATION AND WEAK CLEAVAGES. THE STONE SHOULD NOT DISINTEGRATE SIGNIFICANTLY FROM THE
ACTION OF AIR, WATER, OR IN HANDLING AND PLACING. STONE WITH TOOL MARKS, DRILL HOLES, AND OTHER BLASTING EVIDENCE
SHALL NOT BE UTILIZED IN EXPOSED LOCATIONS.
6. FILTER FABRIC OF A TYPE AND SIZE SPECIFIED BY THE DESIGNER SHALL BE USED TO SEAL THE GAPS BETWEEN THE BOULDERS AND THE
STREAM BED, 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.
7. BACKFILL ROCK ALONG THE STREAM BANK SHALL BE NATIVE CHANNEL MATERIAL OR RIVER COBBLE OF EQUIVALENT SIZE AND HAVE AN
AVERAGE DIAMETER OF 8". SMALLER AGGREGATE (I.E. NO. #57) OR COBBLE STONES SHALL BE USED TO FILL VOIDS SUCH THAT EACH
BOULDER RESTS SOLIDLY ON THE PREVIOUS ROCK LAYER WITH MINIMAL OPPORTUNITY FOR MOVEMENT.
8. DETAIL SHOWS TWO STEP POOLS IN SERIES; HOWEVER, NUMBER OF STEP POOLS MAY VARY BY DESIGN. REFERENCE SHEETS C5.07 AND
C5.08.
CONSTRUCTION GUIDELINES:
1. STREAM SHALL BE DIVERTED AWAY FROM THE WORK AREA AND THE SITE SHALL BE DEWATERED.
2. EXCAVATE TRENCH FOR FOOTER ROCKS TO THE ELEVATION AND GRADES NECESSARY FOR PLACEMENT OF BOTH FOOTER AND HEADER
BOULDER SO THAT THE DESIRED ELEVATION OF THE HEADER BOULDER MEETS THE LINES AND GRADES OF THE STRUCTURE SCHEDULE IN
ACCORDANCE WITH THE PLANS AND PROFILES.
3. PLACE FOOTER BOULDERS IN EXCAVATED TRENCH WITH ADJACENT BOULDERS ABUTTING EACH OTHER. FOOTER BOULDERS SHALL BE
PLACED NEATLY 50 THAT THE HEADER BOULDERS CAN REST SECURELY ON TWO FOOTER BOULDERS. SMALLER ROCK SHALL BE USED TO
FILL VOID SPACES SO THAT EACH BOULDER RESTS SOLIDLY ON THE PREVIOUS BOULDER WITH MINIMAL OPPORTUNITY FOR MOVEMENT.
4. BOULDER SILL ROCKS WILL TIE INTO THE CHANNEL BOTTOM ELEVATION AT THE LOCATION OF EACH SILL AND EXTEND INTO THE
STREAMBANK A MINIMUM OF 5' UNLESS OTHERWISE SPECIFIED BY THE DESIGNER.
5. PLACE FILTER FABRIC BEHIND BOULDER SILL AND ALONG THE BOTTOM OF THE STREAM BED.
6. PLACE COARSE BACKFILL BEHIND BOULDERS ENSURING THAT ANY VOIDS BETWEEN THE ROCKS ARE FILLED.
7. TRIM ANY EXPOSED FILTER FABRIC AROUND THE SILL INSTALLATION. CHECK PROPER FUNCTION/FLOW PATH BY OBSERVING FLOW OVER
STRUCTURE. REPAIR AS NEEDED TO ENSURE PROPER FUNCTION.
8. ENSURE NO LEAKAGE/FLOW UNDER OR AROUND STRUCTURE BY PROPERLY GRADING, SEALING, AND COMPACTING UNDER AND
AROUND THE STRUCTURE.
9. EROSION CONTROL BLANKET SHALL BE INSTALLED IN AREAS SHOWN ON THIS DETAIL AND IN COMPLIANCE WITH INSTALLATION
INSTRUCTIONS ON THE EROSION CONTROL DETAIL ON SHEET C6.14.
TRIBUTARY
BOTTOM
N
CHANNEL
WIDTH (FT)
(
Wbkf(FT)
MIN. SILL
LENGTH (ET)
FORK CREEK
9.1
16.3
20.0
UT1
5.8
10.6
16.0
UT2
2.6
5.0
13.0
UT3
2.9
5.3
13.0
TOE OF BANK
(TYP.)
TOP OF BANK
(TYP.)
BOULDER SILL
CONTROL POINT
SEE SHEETS C5.07
AND C5.08 FOR
ELEVATION
VANE ARM MAY BE
CONSTRUCTED OF LOG OR
STONE
HEADER BOULDER
(DIMENSIONS SEE TABLE)
FOOTER BOULDER
(DIMENSIONS SEE TABLE)
STREAM BANK
(TYP.)
-
0
IN -STREAM STEP POOL DETAIL
N.T.S.
BOULDER SILL
CONTROL POINT
SEE SHEETS C5.07
AND C5.08 FOR
ELEVATION
NATIVE CHANNEL
MATERIAL IS TO BE
PLACED ALONG THE
BANK
NON -WOVEN GEOTEXTILE AND CLASS
'A' RIPRAP (OR EQUIVALENT) ON
UPSTREAM OF VANE ARMS
1
rr
SEAL
\•
r+r��11tCA S ,.I
049073 l
+tr
M:.A
M 0
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco-com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RS
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19000-D1
RAS
RHW
N.T.S.
02.18.2020
STREAM
DETAI LS
C8.05

GENERAL NOTES
1. RIFFLE ARMOR DEPTH SHALL BE A MINIMUM OF 6 INCHES.
2. EXTEND RIFFLE ARMOR UP TO HALF BANKFULL DEPTH.
3. LOW POINT (THALWEG) SHALL BE IN THE CENTER OF CHANNEL.
4. RIFFLE SUBGRADE MATERIAL SHALL BE NCDOT CLASS'B' RIPRAP OR RIVER COBBLE OF EQUIVALENT SIZE
AND HAVE AN AVERAGE DIAMETER OF 8". NATIVE CHANNEL MATERIAL FROM THE EXISTING CHANNEL
SHALL BE USED WHENEVER POSSIBLE.
5. GRAVEL SUBSTRATE FROM THE EXISTING CHANNEL SHALL BE STOCKPILED AND REUSED AS SURFACE
STONE IN THE NEW CHANNEL. GRAVEL SHALL BE PLACED AT EACH RIFFLE LOCATION IN ACCORDANCE
WITH THE GRADATION SHOWN ON THESE PLANS. SOME EXCAVATION OF CHANNEL BED MATERIAL MAY
BE NECESSARY PRIOR TO PLACEMENT OF RIFFLE TO ENSURE PROPER CROSS -SECTIONAL DIMENSIONS
ONCE RIFFLE IS CONSTRUCTED. RE -DRESSING OF CHANNEL AND BANKS MAY BE REQUIRED FOLLOWING
CONSTRUCTION OF RIFFLES AND CHANNEL.
EROSION
CONTROL
BLANKET
3'
r
EROSION
CONTROL
BLANKET
BANKFULL WIDTH �J
WIDTH AT
HALF Dekr -
B
PLAN VIEW
3.
RIFFLE ARMOR
RIFFLE SURFACE STONE
RIFFLE SUBGRADE
d50= 8" MIN
HEAD OF RIFFLE
FLOW
RIFFLE
SUBGRADE
D5o= 8„ MIN.
CONSTRUCTED RIFFLE DETAIL
N T.S.
BANKFULL WIDTH
CROSS SECTION A -A'
PROFILE B-B'
INSTALL EROSION
CONTROL BLANKET
IN 6" TRENCH
(SEE DETAIL ON
SHEET C6.14)
LOW POINT SHALL BE IN
CENTER OF CHANNEL
SLOPE VARIES THROUGHOUT.
REFER TO STREAM PROFILE
RIFFLE SURFACE STONE
POOL
TRIBUTARY
BOTTOM
CHANNEL
WIDTH (FT)
Wbkf(FT)
WIDTH AT HALF
Dbkf(FT)
FORK CREEK
9,1
16.3
12.7
UT1
5.8
10.6
8.2
UT2
2.6
5.0
3.8
UT3
2.9
5.3
4.1
tis'��N 1tir1A14q��..r
~ q-1
SEAL
-0732.1
•
4.111111310
c £ L. )A m
The John R McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-D1
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02.18.2020
STREAM
DETAILS
C8.06

MARSH/WETLAND
AREA
15(MIN.):1
LOW FLOW CHANNEL
SECTION A -A'
NOTE:
CONSTRUCT ROCK OUTLET TO PROVIDE DIFFUSE FLOW.
CLASS A/B
ROCK OUTLET
STABLILZATION
LOW FLOW CHANNEL
MARSH/WETLAND AREA
MARSH TREATMENT AREA
N.T.S.
SHALLOW POOL
12"-1 6" (TYP)
PLAN VIEW
VELOCITY DISSIPATON PAD SIZES
Location
Stone Size
Length (ft)
Width (ft)
Marsh Treatment Area 1
Class B
9.0
4.5
Marsh Treatment Area 2
Class I
12.0
4.5
SWALE OR CULVERT OUTLET
VELOCITY DISSIPATION PAD.
LENGTH AND WIDTH PER TABLE.
ttttttttu1181.,►
SEAL c-'s
1 049073 2,1
r# �rCAtnt- � OO
MCADAMS
The John R, McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco,com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-D1
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02.18.2020
STREAM
DETAILS
C8.07

4 X 18" PROPOSED HDPE FLOODPLAIN CULVERTS.
LOCATION TO BE DETERMINED AT TIME OF CONSTRUCTION
AND APPROVED BY DESIGN ENGINEER.
LENGTH = 26'
APPROX INV. IN = 2951.0'
APPROX. INV. OUT = 2950.5'
Hill 1-
'f
";IllifI
• I- l -. •_1 I- 4' BED #57 STONE
MIN. 1.0' OF COVER
OVER FLOODPLAIN CULVERTS
PROPOSED ACCESS ROAD
APPROX. ROAD CREST ELEV. = 2954.2'
ACCESS ROAD BRIDGE
MIN. LOW CHORD ELEV. = 2952,2'
*APPROX. HIGH CHORD ELEV. = 2954.2'
WIDTH = 12.0'
*BRIDGE AND FOOTERS TO BE DESIGNED BY OTHERS
•
ARMOR SIDE SLOPES
WITH MIN. CLASS B
RIPRAP OR STONE OF
EQUILAVENT SIZE.
FORK CREEK BRIDGE CROSSING
N.T.S.
PROPOSED GROUND
(TYP.)
ANKFU
MAX. 2(H):1(V)
SIDE SLOPE
FLOW
CHANNEL P
PROPOSED GROUND
(TYP.)
UT2 CULVERT NOT TO BE -
EMBEDDED DUE TO THE STEEPNESS
CHANNEL IN VICINITY OF CROSSING.
MIN. 1.0' OF COVER -\\
/-ACCESS ROAD CROSSING
OVER CULVERT IJI
-II. ill'Il--lll:lll�l�l III-I11- I+
E 1 I I -I I l 1 II ICI I l i l-I I I1! G I= 1 I f =f I! -i "-
ELLIPTICAL CMP
SPAN = 3.167'
RISE = 2'
INV IN = 2931.15
INV OUT = 2927.78
ELLIPTICAL CMP
SPAN = 3.167'
RISE = 2'
LENGTH = 40 LF
INV IN = 2931.15
INV OUT = 2927.78
PROPOSED ROAD ELEV = EL. 2936.00
UT 2 CULVERT CROSSING
N.T.S.
ROAD WIDTH = 12'
ACCESS ROAD BRIDGE
APPROX. ROAD CREST
ELEV. = 2954.2'
GENERAL NOTES
1. INSTALL PERMANENT CROSSING WHILE CONSTRUCTION LOCATION WITHIN STREAM HAS
BEEN DEWATERED.
2. IF UNABLE TO INSTALL WHILE LOCATION 15 DRY, PLACE MATTING ON EXPOSED 50115,
3. CONTRACTOR TO INSTALL CROSSING PIPE AND HEADWALL TO MANUFACTURER'S
SPECIFICATION THIS INCLUDES SPECIFIED BEDDING AND BACKFILL REQUIREMENTS,
4- ALL MATERIAL TO BE PLACED AND COMPACTED WITHIN ROAD EMBANKMENT SHALL BE FREE
FROM ROOTS, STUMPS, WOOD, STONES GREATER THAN 6", AND FROZEN OR OTHER
OBJECTIONABLE MATERIAL.
'-NO FLOODPLAIN CULVERTS ARE
PROPOSED FOR FOR THE UT2
CROSSING DUE TO THE STEEPNESS
AND LACK OF DEFINED FLOODPLAIN
TOPOGRAPHY IN THE TRIBUTARY.
SEE DETAIL SHEET
C8.09 FOR
VELOCITY
DISSIPATER PAD
SEAL
049073
MCADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-167
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I L1.0
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-D1
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 05.14.2021
CULVERT
DETAILS
C8.08

r
NOTES:
1. A FILTER BLANKET IS TO BE INSTALLED BETWEEN THE RIPRAP AND SOIL FOUNDATION. THE
FILTER BLANKET WILL CONSIST OF A MINIMUM 4" THICK LAYER OF STONE (NCDOT #57)
UNDERLAIN WITH MIRAFI FILTER WEAVE 700 OR ENGINEER -APPROVED EQUIVALENT.
2. RIPRAP TO EXTEND TO TOP OF CHANNEL WITH 2:1 SIDE SLOPES THROUGHOUT THE EXTENT
OF CHANNEL.
ALUMINUM STRUCTURAL
PLATE HEADWALL
40 LF ELLIPTICAL CMP CULVERT —
SEE SHEET C8.08
20'
PLAN VIEW
MINIMUM DIMENSIONS
NCDOT CLASS I RIPRAP
20'L X 5.0'W X 22" THICK
TO BE LINED WITH
GEOTEXTILE FABRIC OR
ENGINEER —APPROVED
EQUIVALENT
40 LF ELLIPTICAL CMP CULVERT
SEE SHEET C8.08
FILTER BLANKET
(SEE NOTE)
ALUMINUM STRUCTURAL PLATE HEADWALL
PROFILE VIEW
UT2 CULVERT VELOCITY DISSIPATER
N.T.S.
22" LAYER
OF CLASS
I RIPRAP
4" FILTER
BLANKET
1111+++++
1.
SEAL : S.
049073j,\
Z
M_A AM
The John R. McAdams Company, Inc
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS I LLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI19000-D1
RAS
RHW
N.T.S.
02.18.2020
CULVERT
DETAILS
C8.09

„
-side
fll FAI
VVegeldion .Association
NIonlane Alluvial
Pored*
Acidic cove ForesI*
Stream
Assemblage**
Area (acres)
.0
4.7
2.5
16.2
Species
# planter'
" . of lulal
# plaided*
"4, o1'lolal
1) planted**
'.o tiflulaE
# planted
Isistem lionluck(73,, r, c•un9dewit .0
612
N
639
20
—
--
1251
('hem birch (flea,,!, teen,)
612
lu
(39
'0
1360
211
2611
1
Ye11o« birch (B vula ell lt yha)nc/r,Yi,s 1
612
639
'0
1360
20
2611
Seeamore (Plormr1LY c,eeidentahs)
612
]0
.-
—
136(1
20
1972
I
;r tulip poplar (Liriodcmlrore II,lipq-era )
612
'
10
639
20
680
10
1931
Sltodhuslt (Inml,enchierorhorea)
612
10
—
.-
--
612
White oak (Qucreloalbol
612
10
--
--
--
612
Rit•crhitch (keii,h, nip.tr 1
612
10
--
680
10
1292
White pine (PAees snonrr.,1
612
10
—
--
--
612
Red splice (1',cca nihee.$)
612
10
..
—
—
..
612
Red oak Wei c r c.er.s ...id, ref 1
—
.639
10
—
••
.01,1
Hack wino c(4So/,.enrkra)
-.
—
—
1360
.0
1360
r
TO FAL
6120
100
3196
100
6800
100
16116
* Plated at a densitc of6S0 stems'acre,
**Named at a denoitr bl'2720 stems acre
.rr.rwiteavr.�ooir. n.*
•
4
LEGEND
0
Easement Boundary = 29.19 ac
Major Topography Line (5-ft)
Minor Topography Line (1-ft)
Streamside Assemblage
Acidic Cove Forest
Montane Alluvial Forest
Approximate Area of Herbaceous Dominated Wetlanc
• View
GRAPHIC SCALE
100 200
400
1 inch = 200 ft.
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PLANTING PLAN
O
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NOTES:
1. AREAS NOTED AS BARE ROOT PLANTINGS WITHIN THE PLANTING ZONE SHALL BE PLANTED WITH SPECIES LISTED ON
SHEET L5.00.
2. DURING PLANTING, SEEDLINGS SHALL BE KEPT IN A MOIST CANVAS BAG OR SIMILAR CONTAINER TO PREVENT ROOT
SYSTEMS FROM DRYING.
3. PLANTING BAR SHALL HAVE A BLADE WITH A TRIANGULAR CROSS SECTION, AND SHALL BE 12 INCHES LONG, 4 INCHES
WIDE AND 1 INCH THICK AT CENTER.
4. ALL SEEDLINGS SHALL BE ROOT PRUNED, IF NECESSARY, SO THAT NO ROOTS EXTEND MORE THAN 10 INCHES BELOW
THE ROOT COLLAR.
I. INSERT PLANTING BAR 12" INTO
THE GROUND AS SHOWN AND
PULL HANDLE TOWARD
PLANTER.
l
2. REMOVE PLANTING BAR AND 3. INSERT PLANTING BAR 2 INCHES
PLACE SEEDING AT CORRECT TOWARD PLANTER FROM
DEPTH. SEEDING.
4. PULL HANDLE OF BAR TOWARD 5. PUSH HANDLE FORWARD 6 LEAVE COMPACTION HOLE OPEN
PLANTER, FIRMING SOIL AT
BOTTOM.
FIRMING SOIL AT TOP WATER THOROUGHLY.
BARE ROOT PLANTING DETAIL
N.T.S.
NOTES:
1. AREAS NOTED AS LIVE STAKES WITHIN THE PLANTING ZONE SHALL BE PLANTED WITH SPECIES LISTED ON SHEET L5.00.
2. ONE LIVE STAKE SPECIES PER LIVE STAKE AREA. ALTERNATE SPECIES PER LIVE STAKE AREA.
3- ALL LIVE STAKES SHALL BE DORMANT AT TIME OF ACQUISITION AND PLANTING.
4. LIVE STAKES SHALL BE 1/2-2" IN DIAMETER. LIVE STAKES SHALL ALSO BE 2 - 4 FEET IN LENGTH.
5. DURING PREPARATION, THE BASAL ENDS OF THE LIVE STAKES 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.
6. CUTTINGS FOR LIVE STAKES SHALL BE HARVESTED IN A MANNER SUCH THAT THEY ARE CUT, IMMEDIATELY PUT INTO
WATER TO BE SOAKED FOR 10 DAYS, AND THEN PLANTED IMMEDIATELY AFTER THE 10 DAYS ARE COMPLETED.
CUTTINGS SHALL REMAIN WET UNTIL THEY ARE PLANTED. OUTSIDE STORAGE LOCATIONS SHOULD BE CONTINUALLY
SHADED AND PROTECTED FROM WIND AND DIRECT SUNLIGHT.
7, LIVE STAKES SHALL BE TAMPED AT AN ANGLE INTO THE GROUND SURFACE 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. ANY STAKES THAT ARE SPLIT OR DAMAGED DURING INSTALLATION SHALL BE REMOVED AND
REPLACED.
8. THE AREA AROUND EACH LIVE STAKE SHALL BE COMPACTED BY FOOT AFTER THE LIVE STAKE HAS BEEN INSTALLED.
9. ONE TO TWO INCHES SHALL BE CUT CLEANLY OFF OF THE TOP OF EACH LIVE STAKE (WITH LOPPERS) AT AN ANGLE OF
APPROXIMATELY 15 DEGREES FOLLOWING INSTALLATION.
BANKFULL
EROSION CONTROL BLANKET
(SEE DETAIL SHEET C6.19)
CHANNEL BED —\
LIVE STAKE
(SEE DETAIL NOTES)
LIVE STAKE DETAIL
N.T.S.
•
N
l AA� %%0,
S�r
049073EAL.i
i
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''�.,,EecA11151
MC.ADAMS
The John R, McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax 919, 361. 2269
license number: C-0293, C-187
www.mcadamsco,com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
RESTORATION
SYSTEMS ILLC
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO. AXI-19000
FILENAME AXI19000-LS
CHECKED BY RAS
DRAWN BY RHW
SCALE N.T.S.
DATE 02.18.2020
PLANTING DETIALS
L5.01

TEMPORARY SEEDING SCHEDULE:
TEMPORARY SEEDING SHALL BE APPLIED AS NEEDED DURING CONSTRUCTION TO STABILIZE BARE OR DISTURBED AREAS OF SOIL AND AT THE COMPLETION OR ALL
GRADING AND EARTHWORK ACTIVITIES WITHIN A PARTICULAR AREA OF THE SITE. PERMANENT SEED MAY BE DISTRIBUTED WITH TEMPORARY SEED UPON THE FINAL
APPLICATION OF TEMPORARY SEED.
SEEDING DATE
AUG 15 - MAY 15
AUG 15 - MAY 15
MAY 15 - AUG 15
MAY 15 - AUG 15
SEEDING METHODS
SEEDING MIXTURE
ANNUAL RYE (GRAIN)
WINTER WHEAT
GERMAN MILLET
BROWNTOP MILLET
APPLICATION RATE
30 LBS/AC
30 LBS/AC
10 LBS/AC
10 LBS/AC
1. EVENLY APPLY SEED USING A CYCLONE SEEDER, DRILL, CULTIPACKER SEEDER, OR HYDROSEEDER. THIS MUST BE DONE WITHIN 48 HOURS OF LAND DISTURBING
ACTIVITIES.
2, MULCH WITH CLEAN WHEAT STRAW,
3. AFTER SEEDING, APPLY MULCH TO AREAS UNDER HARSH CONDITIONS SUCH AS AREAS THAT HAVE BEEN GRADED, OR THOSE WHICH WILL RECEIVE CONCENTRATED
FLOWS. AREAS CONSIDERED TO BE UNDER HARSH CONDITIONS WILL BE CONSIDERED THE AREAS GRADED FOR THE WETLAND VALLEY.
4. RESEED AND MULCH AREAS WHERE SEEDLING EMERGENCE IS LESS THAN 80% COVERAGE, OR WHERE EROSION OCCURS, AS SOON AS POSSIBLE. DO NOT MOW,
PROTECT FROM TRAFFIC AS MUCH AS POSSIBLE.
NOTES
1. TEMPORARY ANNUAL SEED SELECTION SHOULD BE BASED ON SEASON OF PROJECT INSTALLATION.
2. A SINGLE SPECIES FOR TEMPORARY COVER IS ACCEPTABLE
3. IN SOME CASES WHERE SEASONS OVERLAP, A MIXTURE OF TWO OR MORE SPECIES MAY BE NECESSARY. HOWEVER, APPLICATION RATES SHOULD NOT EXCEED THE
TOTAL RECOMMENDED RATE PER ACRE.
4. TEMPORARY SEED SHOULD BE MIXED AND APPLIED SIMULTANEOUSLY WITH THE PERMANENT SEED MIX IF OPTIMAL PLANTING DATES ALLOW.
PERMANENT SEEDING SCHEDULE:
PLANT MATERIAL SELECTION
1. REFER TO THE TABLES ON THIS SHEET FOR APPROPRATE SELECTION OF NATIVE PERMANENET SEEDS.
2. PERMANENT SEED MIXTURE SHOULD BE APPLIED USING AN APPLICATION RATE AND METHOD RECOMMENDED BY THE NURSERY.
SEEDBED PREPRATION
1. DISTURBED SOILS WITHIN THE RIPARIAN AREAS MUST BE AMMENDED TO PROVIDE AN OPTIMUM ENVORONMENT FR SEE GERMINATION AND SEEDNG GROWTH.
2. THE pH OF THE SOIL MUST BE SUCH THAT IT IS NOT TOXIC AND NUTRIENTS ARE AVAILABLE,
3. SOIL ANALYSIS SHOULD BE PERFORMED TO DETERMINE NUTRIENT AND LIME NEEDS OF EACH SITE,
4. APROPRIATE pH LEVELS ARE BETWEEN 5.5 AND 7.0
5, RIPARIAN BUFFERS REGULATED FOR NUTRIENT MANAGEMENT MAY BE LIMITED TO A SINGLE APPLICATION OF FERTILIZER.
6, SUITABLE MECHANICAL MEANS SUCH AS DISKING, RAKING, AND HARROWING MUST BE EMPLOYED TO LOOSEN COMPACTED SOILS PRIOR TO SEEDING.
PLANTING
1. APPLY SEED UNIFORMLY WITH A CYCLONE SEEDER, DROP -TYPE SPREADER, DRILL, OR HYDROSEEDER ON A FIRM, FRIABLE SEEDBED.
2. IN FINE SOILS, SEEDS SHOULD BE DRILLED 0.25-0.5 INCHES. IN COURSE SAND SOILS, SEEDS SHOULD BE PLANTED NO MORE THAN 0.75 INCHES.
MULCH
1. MULCH ALL PLANTING AREAS IMMEDIATELY AFTER SEEDING.
2. IF PLANTING ON STREAMBANKS STEEPER THAN 10% OR OTHER AREAS SUBJEC TO FLOODING, A BIODEGRADEABLEL ROLLED EROSION CONTROL PRODUCT IS
RECOMMENDED TO HOLD SEED AND SOIL IN PLACE.
MAINTENANCE
1. THE RECOMMENEDED PERMANENT GRASS SPECIES MAY REQIRE TWO YEARS FOR ESTABLISHMENT DEPENDIG ON SITE CONDITIONS,
2. INSPECT SEEDED AREAS FOR FAILURE AND MAKE NECESSARY REPAIRS, SOIL AMENDMENTS, AND RE-SEEEDINGS,
3. IF WEEDY EXOTIC SPECIES HAVE TAKEN OVER AREAS AFTER THE FIRST GROING SEASON, THE INVASIVE SPECIES MUST BE ERADICATED TO ALLOW STAIVE SPECIES TO
GROW,
4. MONITORING THE SITE UNTIL LONG-TERM STABILITY HAS BEEN ESTABLISHED.
PERMANENT SEEDING MIXTURE
(2 LB/ACRE)
Name
Percent of Seed Mix
Agrostis alba
20
Tridens flavus
20
Agrostis hyemalis
5
Agrostis stolonifera
5
Chrysanthemum
leucanthemum
5
Coreopsis lanceolata
5
Coreopsis tinctoria
5
Elymus virginicus
5
Panicum clandestinum
5
Rudbeckia hirta
5
Echinacea purpurea
3
Eupatorium perfoliatum
3
Chamaecrista fasciculata
2
Chamaecrista nictitans
1
Cosmos bipinnatus
1
Desmodium canadense
1
Helianthus angustifolius
1
Heliopsis helianthoides
1
Hibiscus moscheutos
1
Lespedeza capitata
1
Lespedeza virginica
1
Liatris spicata
1
Silphium perfoliatum
1
Verbena hastata
1
Eupatorium coelestinum
0.5
Monarda fistulosa
0.25
Pycanthemum tenuifolium
0.25
*ERNST SEEDS "ERNMX-305, NC FACW MIX"
PERMANENT STREAM BANK SEEDING MIXTURE
(4 LB/ACRE)
Name
Percent of Seed Mix
Panicum rigidulum
35
Panicum anceps
23
Elymus virginicus
20
Carex lurida
12
Juncus effusus
3
Helenium flexuosum
2
Hibiscus moscheutos
2
Scirpus cyperinus
2
Juncus tenuis
1
SEAL -
-
04907 r r' �L1
- ▪ 1.5
MADA M S
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919, 361. 5000
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
LAUREL SPRINGS MITIGATION PLAN
CONSTRUCTION DRAWINGS
AVERY COUNTY, NORTH CAROLINA
Axiom Environmental, Inc.
PLAN INFORMATION
PROJECT NO.
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
AXI-19000
AXI19000-LS
RAS
RHW
N.T.S.
02.18.2020
PLANTING NOTES
L5.02