20200121 Ver 1_More Info Received_20200406

Strickland, Bev
From: Jonathan Herman <[e-mail]>
Sent: Monday, April 6, 2020 3:49 PM
To: Annino, Amy M
Cc: Brown, David W CIV USARMY CESAW (US); Leslie, Andrea J; Jon Swaim
Subject: [External] Moose Branch Subdivision - NDEQ DWR comments
Attachments: Additional Information Request - Moose Branch Subdivision - DWR 2020-0121;
Moose Branch - NCDEQ - Response to Comments FINAL.pdf, PCN Revisions
4-6-20.pdf, Moose Branch Impacts Map 4-6-20.pdf, Revised Construction Sheets.pdf
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We have made an additional update to the Moose Branch Subdivision plans in response to comments from the
NCDEQ DWR dated 03-20-2020 (see attached email). The change affects wetland and stream impacts as
follows:
The shared drive has been reconfigured to mostly avoid permanent impacts to wetlands. Please see the
attached updated PCN table, Impacts Map, and construction plan sheets. Additionally, please see the
attached letter in response to the DWR comments.
We appreciate everyone's coordination with us on this project. If you have any additional comments or need
additional information regarding the revisions let us know.
Thanks,
Jonathan M. Herman
Environmental Planner
McGill Associates, P.A.
1013 State Farm Road, Boone, NC 28607
T 828.386.1920
ionathan.hermanamcaillassociates.com
mcgillassociates.co [mcgillassociates.com
From: Jonathan Herman
Sent: Friday, March 6, 2020 4:22 PM
To: [e-mail] <[e-mail]>; Leslie, Andrea J <[e-mail]>;

Annino, Amy M <[e-mail]>
Cc: Jon Swaim <[e-mail]>
Subject: RE: Moose Branch Subdivision - NCWRC comments
LV
There have been several updates to the Moose Branch Subdivision plans in response to the NCWRC
comments. Two of the changes affect wetland and stream impacts as follows:
A single 44" x 27" Arch RCP pipe is now proposed instead of the dual 24 inch RCP pipes at the upper
stream crossing. The alignment of this pipe was also modified to fit the road right-of-way and
downstream stream location to minimize potential downstream erosion. This modification would result
in slight changes to wetland and stream impacts in this area (see Impacts W2-W5 and S2-S3).
In an effort to promote movement of aquatic organisms, the plans have been revised to show removal
of an existing driveway pipe and restoration of approximately 20 linear feet of `UT to Mauney
Creek'. This activity will result in some additional temporary stream impacts for construction access to
this area (Impacts S7 & S8). We assume this activity would be permitted under Nationwide #27.
Please see the attached updated PCN table, Impacts Map, and construction plan sheets.
Additionally, a response letter to the NCWRC comments is attached.
We appreciate your coordination with us on this project. If you have any comments or need additional
information regarding the revisions let us know.
Thanks,
Jonathan M. Herman
Environmental Planner
McGill Associates, P.A.
1013 State Farm Road, Boone, NC 28607
T 828.386.1920
ionathan.herman(cDmcgillassociates.com
mcgillassociates.com f mcgillassociates.coml
From: Jon Swaim<[e-mail]>
Sent: Tuesday, February 18, 2020 3:25 PM
To: Jonathan Herman <[e-mail]>
Subject: FW: Moose Branch Subdivision - NCWRC comments

�'�III �Ilm
Jon Swaim
Project Manager
McGill Associates, P.A.
1013 State Farm Road, Boone, NC 28607
T 828.386.1920
C 828.434.0951
ion.swaim(cD-mcgillassociates.com
mcgillassociates.com fmcgiIIassociates. coml
From: Leslie, Andrea J <[e-mail]>
Sent: Tuesday, February 18, 2020 3:21 PM
To: Brown, David W CIV USARMY CESAW (US) <[e-mail]>
Cc: Annino, Amy M <[e-mail]>; Jon Swaim<[e-mail]>
Subject: Moose Branch Subdivision - NCWRC comments
HI David — attached are NCWRC's comments on the Moose Branch Subdivision project.
Andrea
Andrea Leslie
Mountain Habitat Conservation Coordinator
NC Wildlife Resources Commission
645 Fish Hatchery Rd., Building B
Marion, NC 28752
828-803-6054 (office)
828-400-4223 (cell)
www.ncwildlife.org
iplus. oo Ie.coml® ifacebook.coml[3ftwitter.com OE] fyoutube.coml
Get NC Wildlife Update delivered to your inbox from the N.C. Wildlife Resources Commission.
Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties.

FAShaping Communities Together
MCJ I11
April 6, 2020
Ms. Amy Annino
Environmental Specialist —Asheville Regional Office
Water Quality Regional Operations Section
NCDEQ — Division of Water Resources
2090 U.S. Hwy. 70
Swannanoa, N.C. 28711
RE: Moose Branch Subdivision Project
UT to Mauney Branch
Graham County, North Carolina
Dear Ms. Annino:
Thank you for your comments regarding the 401 Water Quality Certification application submitted
for the Moose Branch Subdivision Project. Please find a response to your comments below:
1. Please provide more details regarding avoidance and minimization of the shared driveway
impacts for this project. [15A NCAC 02H .0506(f) and (g)]. This Office believes that the proposed
stream and wetland impacts for the 46 LF 36" culvert to accommodate the shared drive can be
moved or reconfigured to avoid the impacts to the UT to Mauney Branch and adjacent wetlands.
Please revise the plans to avoid the impacts or provide a detailed explanation of why this plan for
the activity cannot be practically accomplished, reduced or reconfigured to avoid impacts to the UT
to Mauney Branch and adjacent wetlands.
The intent of the Moose Branch Subdivision plans is to design a site layout which subdivides
the property into useable residential lots and provide access to each of these lots. The
purpose of the shared drive is to provide access to lots 4, 5, and 6. After further review we
determined the shared drive could be reconfigured to mostly avoid permanent wetland
impacts while maintaining sight distance along Moose Branch Road (see attached sheet C-
101). There does not appear to be a way to move or reconfigure the drive to avoid impacts
to UT to Mauney Branch. Early design considerations for only having one entrance from
Moose Branch Road were explored. It was determined that lots 4,5, and 6 would need to be
accessed by a shared drive from Moose Branch Road. Accessing lots 4,5 and 6 from Road
"A" was deemed infeasible because the fill slope south of Road `A' is too steep for driveways
to access these lots. The elevation of Road `A' in this area cannot be lowered to eliminate
the fill slope because this would cause an excessive road slope between Lot 6 and the cul-
de-sac.
2. Condition I. b. of GC 4139 (attached) requires that the project not cause degradation of
downstream surface waters. Please provide calculations to document this. Documentation shall
include a detailed analysis of the hydrological impacts from stormwater runoff when considering the
volume and velocity of stormwater runoff from the project built upon area and the size and existing
condition of the receiving stream(s)..
MCGILL ASSOCIATES 1013 STATE FARM ROAD, BOONE, NC 28607 / 828.386.1920 / MCGILLASSOCIATES.COM

Ms. Amy Annino, NCDEQ DWR
April 6, 2020
2 of 3
A hydrological analysis including calculations is attached. The analysis concluded the
proposed Moose Branch Subdivision should not substantially increase the stormwater
velocity or volume in UT to Mauney Branch and is not expected to degrade downstream
surface waters.
3. The plan set does not specify that culvert burial be 20% of culvert diameter. Please include
the appropriate 20% culvert burial depth for proposed culvert(s) on the plan set.
The `Culvert — Counter Sink Typical' detail (see note #1) on the attached sheet C-505 has
been revised to specify that culvert burial should be 20% of culvert diameter. Additionally,
note #3 on the attached sheet C-101 also specifies the burial depth requirement.
4. Please provide descriptive information regarding the proposed temporary stream impacts
upstream and downstream of both culverts.
Temporary impacts both upstream and downstream of the culverts will be needed for the
proposed temporary stream bypass (see detail on sheet C-506). The bypass will require
dikes, dewatering devices and pipes, and energy dissipation material to be temporarily
installed in -stream and along stream banks. Some temporary impacts are also anticipated
to access the areas where these practices are installed. The bypass is proposed so flow
from the stream will be diverted around the work area and sediment will not wash
downstream. After the work is completed the stream bed and bank will be restored to pre -
construction conditions and disturbed stream banks will be stabilized with a native seed
mix. Further information regarding these practices can be found on the attached sheet C-
506.
Thank you for your review and guidance on this project. We feel the revisions as described in the
responses above adequately address your concerns regarding the project. If you have any
additional comments or there are other issues of significance that may affect this project let us know.
Feel free to contact me at our office phone number of [phone] or my email address
jon.swaim(c-)mcgillassociates.com.
Sincerely,
MCGILL ASSOCIATES, PA
JON SWAIM
Project Manager / Environmental Services
Attachments:
1. Plan and Profile Road `A' (Sheet C-101)
2. Water Line Details (Sheet C-505)
3. Stream Impact Notes and Details (Sheet C-506)
4. Hydrological Analysis
W1CGILL ASSOCIATES 1013 STATE FARM ROAD, BOONE, NC 28607 / 828.386.1920 / MCGILLASSOCIATES.COM

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EIIING _ O 20 cam- TOP: 2083.00'
NJ RE` \ \ ,. - 3� / "I- -0o� y ° y I INV. OUT: 2079.00' 2085
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- _ __� 0 w/ INLET OPENINGS
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-AREP\-0- 51ac.- - - _ - - _ 1 \o T I
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\ CLASS III 77 LF
G� \ \ \ % r - _ - _ _ \ \ \ \ ROPOSED 4 x4 Y.I.
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WITH ENDWALLS \�,� ��" \�� 3 �� �, \\ ` o,. \ - \ \\ LOT \ \ \ \ ° \ " ONN ALL 4 SIDES
APPROX. INVERT ELEV. ��. \e°5�� e �� ��\ \\ \ = \ 7 ac\ \ \ _ \ TOP: 2051.00' 2055
INV. IN:2059.0' x�!0\'e o0 5G9� c \ / 1 o� \5 �\��\ �� \-- -'/ \ \ \ \ \� \�
F. STA: 0+56.
ELEV 2064
TA - 8ii3(
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32.09' C,
Gz\e651 yg 1205 �05 +�,cxx� �\\ \ \ \ \ \ \� INV. IN: 2048.00
INV. OUT: 2057.0 \� 063 °�o .zh•� \ \ \ \ �"�. / - \ \ \\� _ _ XISTI G PA MENT
�-- V � INV. OUT: 2046.00
(REFER TO NOTES 2 ° - .
AND 3) `( �� J•o� � i`. .\ 1 / ,
\� \ ROPOSED 72 LF
18" RCP CLASS IV
-1 +00 0+00 1 +00
�)T-6, _ - - , w/ END SECTION
\ s \ \ ��- - �\ \ - J _ ANND PERM. SWALE
\= osO\ \ _ w/ RIP -RAP
_ STABILIZATION
\ \ �_ _TRE�O�� \ - INV. OUT:2042.00'
50' ROW WIDTH (TYP.
19 PAVEMENT WIDTH (TYP. _ - - -_-
ROAD ALIGNMENT INFORMATION ���\ P \ \?^ \\ C3 \ \^ _ _Is,_ _ _ \ \ \-
G
C1 R=90.00' C2 R=90.00'
PC 1+80.89 PC 5+97.02
PT 3+10.55 PT 8+93.84 /
C3 R=50.00' C4 R=45.00' \
PC 0+19.32 PC 0+75.28
PT 0+75.28 PT 1 +77.51
C5 R=45.00' C6 R=20.00'
PC 1+77.51 PC 0+16.82
PT 2+29.43 PT 0+25.31
NOTES:
1. SEE ROAD AND PAVEMENT CROSS -SECTIONS ON SHEET C-501.
2. ALL STORM CULVERTS TO BE TREATED WITH NCDOT STANDARD
ENDWALLS PER STANDARD DRAWING 838.01.
3. STREAM CULVERTS TO BE INSTALLED SUCH THAT 20% OF THE
PIPE DIAMETER IS BELOW THE NATURAL STREAM BED AND IN
ALIGNMENT WITH THE STREAM CHANNEL. CONTRACTOR SHALL
VERIFY ELEVATION AND ALIGNMENT WITH ENGINEER PRIOR TO
INSTALLATION. SEE DETAIL SHEET C-505.
4. THE CONTRACTOR SHALL FLAG THE BOUNDARIES OF EXISTING
WETLANDS PRIOR TO COMMENCING CONSTRUCTION. ONLY THE
AMOUNTS DESIGNATED AS SHOWN SHALL BE DISTURBED.
55 Broad Street
Asheville, NC 28801
828.252.0575
NC Firm License # C-0459
mcgillassociates.com
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ROAD 'A' PROFILE
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PV STA = 3+94.7
-1--
A.D. = 20.65
00
206.4 ' VC
M115
LOW T. STA 5+96.
PVI STA = 6+40.2
P OPOS D .D. = g7.23
Vlvv
R -P (`I II VFRT 272.30 VC
2+00
\ 50 FT STREAM BUFFER FOR SEPTIC, TYP
20�\ \/ire
2055
25 FT STREAM BUFFER, TYP
T-
\ 032
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36 CLASS IV RCP, eo e� _ _ _ 1y�
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INV. IN:2030.40' �56.\°`�" 506a
INV. OUT: 2028.20' 0 °? oze 1hzop251g �
(REFER TO NOTES 2 \�\� �` \\k��.-z 6 Goo Ql
AND 3)
I I
NO. DATE BY
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II
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A.D. = 13.50
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6+00 7+00 8+00 9+00 10+00
c
SHARED DRIVE PROFILES
II
v
GRADE BREAK STA = 2+29.43
ELEV = 2048.62 2055 2050
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SHARED DRIVE 1
MOOSE BRANCH SUBIDIVISION
GRAHAM COUNTY Uk DEVEOPMENT WHORITY
GRAHAM COUNTY, NORTH CAROLINA
DESCRIPTION
3+00 4+00
60 0
30 60 120
GRAPHIC SCALE
DIVISION VALUE = 60 FEET
OFFICE MANAGER
DESIGNER
M. CATHEY
PO
PROJECT MANAGER
REVIEWER
M. OETTING
B. CATHEY
O
N
II
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J
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N
II
11 +00 12+00 13+00 141
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u 2050
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2045
2045
2040
2040
ASS
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2035
2035
2030
2030
-1 +00 0+00 1 +00 2+00
SHARED DRIVE 2
PLAN AND PROFILE
ROAD 'A'
DATE PROJECT # FUNDING #
FEBRUARY 2020 15.00341 N/A
PROFILE SCALE
HORIZONTAL: 1 "=100'
VERTICAL: 1 "=10'
SHEET
C=1 01

NOTE:
1. GLUED JOINTS WILL NOT BE PERMITTED.
2. VERTICAL BLOW —OFF ARRANGEMENT TO BE USED
ONLY WHEN HORIZONTAL BLOW —OFF IS NOT POSSIBLE.
PLASTIC METER BOX
AND APPROVED
COVER
APPROVED WARNING TAPE %/\%/ \;
24" ABOVE PIPE (PVC
ONLY)_____
STD. METER B
AND LID
NO. 12 COATED COPPER---'
TRACING WIRE (PVC ONLY)
CONCRETE DEAD —MAN
WIDTH: 1 FOOT OUTSIDE
DITCH LINE, EACH SIDE.
I" RAI I \/AI \/I
d 4" GALV.
ROD
d
A
< ° /o<
\/\� SDR-13.5
DUCTILE IRON TRANSITION SLEEVE —
FOR 2" PVC TO 2" THREADED WITH
LUGS FOR RODDING TO DEADMAN
rW— BLOW -OFF DETAIL
22 UPDATED MARCH, 2017
NOT TO SCALE
BRASS OR COPPER TRACING
WIRE WITHIN 1' OF TOP (PVC
ONLY)
BANK FULL
ELEVATION
EXISTING GRADE
FINAL GRADE
CORRUGATED
METAL PIPE
//, BELOW ELEVATION REAMBED
ATERIAL
OF STREAM BED
BRASS NIPPLE FOR HORIZONTAL BLOWOFF. SEE PLANS FOR SIZE. (SEE NOTES FOR REQUIRED DEPTH)
/
EXTEND TO DAYLIGHT.
Notes:
1 /
WASHED STONE
BRASS ELBOW AND NIPPLE FOR
VERTICAL BLOW —OFF SIZE
ACCORDING TO PLANS.
2" IRON BODY, DOUBLE DISC GATE
VALVE W/ 2" SQUARE OPERATING NUT
IX
/ALVE
ASS NIPPLE
.Im
WATER MAIN
TAP TO BE MADE AT HIGH POINT OF PIPELINE
ALL COPPER TUBING AND BRASS PIPING TO MAINTAIN A POSITIVE GRADE
AIR RELEASE VALVE DETAIL
NOT TO SCALE
Culverts greater than 48 inches in diameter will be buried at least one foot below the bed of the stream. Culverts 48
inches in diameter or less shall be buried 20% of the pipe diameter to maintain aquatic passage, and every effort shall be
made to maintain the existing channel slope.
The bottom of the culvert must be placed at a depth below the natural stream bottom to provide for passage during
drought or low flow conditions.
BOLT -ON TYPE SKID
OR STAINLESS STEEL
STAINLESS STEEL BOI
STEEL ENCASEMENT
CULVERT - COUNTER SINK TYPICAL
NOT TO SCALE
MASONRY SEAL AT
BOTH ENDS OF
ENCASEMENT PIPE
WEEP HOLE ON BOTTOM
OF THE PIPE AT THE
LOWER END
BC
(MIN. 2 PER JOINT,
SPACED EVENLY)
CARRIER PIPE
2 PIECE STAINLESS S1 LLL
SUPPORT AND SPACER w/
2 PER JOINT OF CARRIER PIPE
"T��' ENCASEMENT
„BRIER PIPE w/
RESTRAINED JOINTS,
FIELD LOCK GASKETS
OR EQUAL.
NOTE: FOR PRESSURE CARRIER PIPES, IF SUITABLE UNDISTURBED EARTH IS NOT AVAILABLE FOR THRUST BLOCKS
DUE TO EXCAVATION, CONTRACTOR SHALL ATTACH THREADED RODS AS SPECIFIED IN THRUST BLOCK DETAILS TO
THE ENCASEMENT AND ROD FITTINGS DIRECTLY TO THE ENCASEMENT PIPE. ATTACHMENT OF THE RODS SHALL BE
BY WELDING DIRECTLY TO THE ENCASEMENT PIPE OR BY WELDING EYE BOLTS TO THE ENCASEMENT FOR
ATTACHMENT OF THREADED RODS WITH NUTS. MINIMUM OF THREE RODS REQUIRED PER FITTING.
S ENCASEMENT DETAIL - STANDARD
16 UPDATED MARCH, 2017
NOT TO SCALE
11LL1BOTI I VLLJ
ON TOM
AT LOWER
END OF PIPE
SEE PAVEMENT CROSS SECTION DETAIL,
MOOSE BRANCH ROAD ROW
SAWCUT EXISTING PAVEMENT
BITUMINOUS TACK COAT
-- --
EXISTING
EXISTING
L- - - - - - - - - - - - - - - - - --- - - - - - -
Z2, �
BITUMINOUS TACK COAT
2'-0" PIPE 2'-0"
O.D.
z
TRENCH BACKFILL SHALL
BE COMPACTED TO 100%
(FULL DEPTH — SEE NCDOT
SPECA, SECTION 312000,
SUBSECTION 3.16)
//\\\j \\\\ UNDISTURBED EARTH
PAVEMENT REPAIRS ON ROADS NOT TO BE RESURFACED
NOTES:
1. EDGE TO BE SAWED WITH A CONCRETE SAW TO A NEAT SQUARED EDGE AND CLEANED OF DUST BEFORE TACK COATIS
APPLIED.
2. EDGES TO BE TACKED WITH CRS-I OR CRS-II.
3. THICKNESS OF B25.OB OR B25.0 BASE COURSE AND S9.5B OR S9.5C SURFACE COURSE SHALL MATCH
EXISTING CONDITIONS IF GREATER THAN SHOWN ON DETAILS.
4. CONTRACTOR RESPONSIBLE FOR REPLACEMENT OF ANY PAVEMENT MARKINGS DISTURBED OR COVERED BY OVERLAY.
TYPICAL PAVEMENT REPAIRS - NCDOT ROADS
UPDATED MARCH, 2017
NOT TO SCALE
cq� gEFORFy MOOSE BRANCH SUBIDIVISION SHEET
oGoc NOT TO SCALE WATER LINE
55 Broad Street—j �
Asheville, NC 28801 = 04 98 D . D = DETAILS
828.252.0575 '�2 cP Q o GRAHAM COUNTY RURAL DEVELOPMENT AUTHORITY OFFICE MANAGER DESIGNER C=505
NC Firm License # C-0459 �i�tiF G�NEE�` M. CATHEY PO
//� � n. ��\\\ ��/GGING QP� PROJECT MANAGER REVIEWER DATE PROJECT # FUNDING #
mcgillassociates.comGRAHAM COUNTY, NORTH CAROLINA
NO. DATE BY DESCRIPTION I I M. OETTING B. CATHEY FEBRUARY 2020 15.00341 N/A

TOP OF SLOPE I NATIVE PLANT SEEDING MIX FOR STREAMBANK STABILIZATION
NOTES: NCDEO GENERAL CONSTRUCTION CONDITIONS
FULLY BIODEGRADABLE COIR MATTING
SEEDED WITH NATIVE NC RIPARIAN
SEED MIX.
NORMAL WATER SURFACE
ELEVATION
v
SECTION VIEW
NOTES:
1. ALL DISTURBED STREAM BED AND BANKS TO BE RETURNED TO ORIGINAL CONTOURS AND
ELEVATIONS.
2. DISTURBED STREAM BEDS TO BE BACKFILLED USING ORIGINAL MATERIAL.
3. DISTURBED STREAM BANKS TO BE STABILIZED WITH COIR MATTING AND NATIVE SEEDING.
4. INSTALL FULLY BIODEGRADEABLE COIR MATTING (NO BACKING) ON ALL DISTURBED AREAS
OF CREEK SIDE SLOPES, OVERLAP MATTING MIN. OF 2' TO ADJACENT NON -DISTURBED
AREAS. DO NOT MAT CREEK BOTTOM.
STREAM BANK STABILIZATION
NOT TO SCALE
01=610 2021
FENCE IQ
SILT II I Viol I I EXISTING STREAM
PROPOSED TEMPORARY
PUMP AROUND
X
PROPOSED PIPE
ENERGY
DISSIPATOR
PROPOSED SILT
FENCE
X
E
/ x
X
1�
M
77
WORK AREA
I \
IMPERVIOUS DIKE" -
TO BE INSTALLED
IIN CHANNEL \
x
PROPOSED SILT
FENCE I
X _ X I
x
PUMP I
DEWATERING
DEVICE /
J /
IIMPERVIOUS DIKE
I
PROPOSED SILT
FENCE
SEEDING FOR STREAM OR RIVERBANK STABILIZATION SHALL BE A MIXTURE OF
NATIVE GRASSES, NATIVE WETLAND GRASSES, PLANTS AND TREES. NATIVE
PLANT MIX SHALL INCLUDE THE FOLLOWIING:
GRASSES - BIG BLUESTEM (ANDROPOGAN GERARDII), INDIAN GRASS
(SORGASTRUM NUTANS), LITTLE BLUESTEM
(SCHIZACHYRIUM SCOPARIUM), SWITCHGRASS (PANICUM VIRGATUM).
15 LBS/ACRE EACH
AUGUST THRU MAY - GREENRYE (SECALE CEREALE)
25 LBS/ACRE EACH
MAY 1 THRU AUGUST - MILLET (PENNISETUM GLLAUCUM)
25 LBS/ACRE EACH
WETLAND GRASSES - HOP SEDGE (CAREX LUPULINA), BLUNT BROOM SEDGE
(CAREX SCOPARIA), FOX SEDGE (CAREX VULPINOIDEA), DEERTONGE (PANICUM
CLANDESTINUM), EASTERN BUR REED (SPARGANIUM AMERICANUM), SOFT RUSH
(JUNCUS EFFUSUS).
TREES - SILKY DOGWOOD (CORNUS AMONUM), SILKY WILLOW (SALIX SERICEA),
HAZEL ALDER (ALMUS SERRULATA) AND ELDERBERRY (SAMBUEUS CANADENSIS)
NATIVE PLANT MIX VARIATIONS SHALL BE APPROVED BY ENGINEER
NOTE: NO FERTILIZER SHALL BE USED WITHIN 10' OF TOP OF STREAM OR
RIVER BANK.
MAINTAIN SOIL EROSION CONTROL MEASURES UNTIL PERMANENT GROUND
COVER IS ESTABLISHED.
REQUEST FINAL APPROVAL BY THE NORTH CAROLINA DEPARTMENT OF
ENVIRONMENTAL QUALITY, DIVISION OF ENERGY, MINERAL, AND LAND
RESOURCES, LAND QUALITY SECTION.
:1X►O[eljaWto] I=a606 [e]iKo]IaLZO]=NI YIJ:0��_"911111111001 0-A :31WA=P10000 1101A :0�01
TEMPORARY BYPASS NOTES
1. Install all erosion control measures
as shown on Erosion Control Plan and
in this detail.
2. Construct impervious dike
(recommend sand bags or other easily
removable material) on upstream side
of existing channel and install
temporary bypass pump to divert water
around construction area. All material
must be completely removed following
construction.
3. Construct impervious dike
(recommend sand bags or other easily
removable material) on downstream side
of existing channel to prevent backing
up of stream water into the
construction area.
4. Dewater the construction area using
another temporary pump and discharge
water into a dewatering basin or
sediment bag until sediment has settled
and water can be discharged back into
stream. Dewatering basin must be
outside of any restricted buffer areas,
use wattles instead of earth berm if
reasonable.
5. Begin construction of cross -culvert.
Contractor shall inspect system daily
before beginning any construction. No
construction shall continue if system is
not fully operational.
6. Any wash material removed from
bypass area should be stoned outside
the flood zone or regulated buffer area
until construction is complete.
7. Upon completion of culvert
construction, remove bypass system
within (2) two calendar days.
8. Stabilize all areas disturbed during
construction. Stream bed and banks
must be returned to pre -construction
conditions.
9. Contractor shall receive prior
approval from engineer if choosing to
use another method in lieu of bypass
channel.
PROPOSED
ROADWAY
TEMPORARY STREAM BYPASS
UPDATED MARCH, 2017
NOT TO SCALE
55 Broad Street
MCgi Asheville, NC 28801
828.252.0575
NC Firm License # C-0459
mcgil lassociates.com
SEAL -
041598
F'VG
1 N E�
D.
.• ���\��
THE CONTRACTOR SHALL MINIMIZE CLEARING WITHIN WETLANDS AND ACROSS
STREAMS TO THE GREATEST EXTENT PRACTICABLE AND SHALL NOT EXCEED
50' WIDE FOR GAS UTILITY LINES AND 40' WIDE FOR ALL OTHER UTILITY
LINES. EXCEPTIONS TO THIS CONDITION WILL REQUIRE WRITTEN APPROVAL
FROM THE PROJECT ENGINEER. FOR CONSTRUCTION CORRIDORS IN
WETLANDS AND ACROSS STREAM CHANNELS, STUMPS SHALL BE GRUBBED
ONLY AS NEEDED TO INSTALL THE UTILITY AND REMAINING STUMPS SHALL
BE CUT OFF AT GRADE LEVEL. THE GENERAL STRIPPING OF TOPSOIL WITHIN
WETLANDS ALONG THE CONSTRUCTION CORRIDOR IS NOT PERMITTED.
2. PERMANENT MAINTAINED ACCESS CORRIDORS IN WETLANDS AND ACROSS
STREAM CHANNELS SHALL BE RESTRICTED TO THE MINIMUM WIDTH
PRACTICABLE AND SHALL NOT EXCEED 30' WIDE FOR GAS UTILITY LINES
AND 20' WIDE FOR ALL OTHER UTILITY LINES EXCEPT AT MANHOLE
LOCATIONS. 15' X 15' PERPENDICULAR VEHICLE TURN-AROUNDS ARE
ALLOWED IN ACCESS CORRIDORS BUT MUST BE SPACED AT LEAST 500'
APART. EXCEPTIONS TO THIS CONDITION REQUIRE WRITTEN APPROVAL FROM
THE PROJECT ENGINEER.
3. THE CONTRACTOR SHALL HAVE A SPECIFIC PLAN FOR RESTORING WETLAND
CONTOURS. ANY EXCESS MATERIAL SHALL BE REMOVED TO A HIGH GROUND
DISPOSAL AREA. THE MIXING OF TOPSOIL AND SUBSOILS WITHIN WETLANDS
ALONG UTILITY CORRIDORS SHALL BE MINIMIZED TO THE GREATEST EXTENT
PRACTICABLE DURING EXCAVATION. THE SOILS SHALL BE PLACED ON FABRIC
TO MINIMIZE IMPACTS WHENEVER POSSIBLE. TOPSOIL EXCAVATED FROM
UTILITY TRENCHES SHALL BE PILED SEPARATELY FROM SUBSOILS AND
BACKFILLED INTO THE TRENCH ONLY AFTER THE SUBSOILS HAVE BEEN
PLACED AND COMPACTED.
4. NO WASTE, SPOIL, SOLIDS, OR FILL OF ANY KIND CAN OCCUR IN WETLANDS
OR WATERS BEYOND THE FOOTPRINT OF THE IMPACT AREA (INCLUDING
TEMPORARY IMPACTS) OR BEYOND THE PERMITTED THRESHOLDS WITHOUT
WRITTEN AUTHORIZATION FROM THE PROJECT ENGINEER. NO REMOVAL OF
VEGETATION OR OTHER IMPACTS OF ANY KIND CAN OCCUR TO STATE
REGULATED RIPARIAN BUFFERS BEYOND THE FOOTPRINT OF IMPACTS
APPROVED IN A BUFFER AUTHORIZATION OR VARIANCE OR AS LISTED AS AN
EXEMPT ACTIVITY IN THE APPLICABLE RIPARIAN BUFFER RULES.
5. ALL EROSION CONTROL DEVICES SHALL BE MAINTAINED ON ALL
CONSTRUCTION SITES, BORROW SITES, AND WASTE PILE (SPOIL) SITES,
INCLUDING CONTRACTOR OWNED OR LEASED BORROW PITS ASSOCIATED WITH
THE PROJECT. SUFFICIENT MATERIALS REQUIRED FOR STABILIZATION AND/OR
REPAIR OF EROSION CONTROL MEASURES AND STORMWATER ROUTING AND
TREATMENT SHALL BE ON -SITE AT ALL TIMES.
6. SEDIMENT AND EROSION CONTROL MEASURES SHALL NOT BE PLACED IN
WETLANDS OR WATERS EXCEPT WITHIN THE FOOTPRINT OF TEMPORARY OR
PERMANENT IMPACTS AUTHORIZED UNDER THE PERMITS. EXCEPTIONS TO
THIS CONDITION REQUIRE WRITTEN APPROVAL FROM THE PROJECT ENGINEER.
7. EROSION CONTROL MATTING THAT INCORPORATES PLASTIC MESH AND/OR
PLASTIC TWINE SHALL NOT BE USED ALONG STREAMBANKS OR WITHIN
WETLANDS. EXCEPTIONS TO THIS CONDITION REQUIRE WRITTEN APPROVAL
FROM THE PROJECT ENGINEER.
8. AN NPDES CONSTRUCTION STORMWATER PERMIT (NCGO10000) IS REQUIRED
FOR CONSTRUCTION PROJECTS THAT DISTURB ONE OR MORE ACRES OF
LAND. THE NCO010000 PERMIT ALLOWS STORMWATER TO BE DISCHARGED
DURING LAND DISTURBING CONSTRUCTION ACTIVITIES AS STIPULATED IN THE
CONDITIONS OF THE PERMIT. IF THE PROJECT IS COVERED BY THE PERMITS,
FULL COMPLIANCE WITH PERMIT CONDITIONS INCLUDING THE EROSION AND
SEDIMENTATION CONTROL PLAN, INSPECTIONS AND MAINTENANCE,
SELF -MONITORING, RECORD KEEPING AND REPORTING REQUIREMENTS IS
REQUIRED.
9. ALL WORK IN OR ADJACENT TO STREAMS SHALL BE CONDUCTED SO THAT
THE FLOWING STREAM DOES NOT COME IN CONTACT WITH THE DISTURBED
AREA. APPROVED BEST MANAGEMENT PRACTICES FROM THE MOST CURRENT
VERSION OF THE INC SEDIMENT AND EROSION CONTROL MANUAL, OR THE NC
NOTES: STATEMENT OF PERMIT AND
CONTRACTOR RESPONSIBILITIES
1. PROJECT SITE CONTAINS JURISDICTIOANL WATERS OF
THE U.S (WOTUS).
2. PROJECT INVOLVES IMPACTS TO WOTUS IN SEVERAL
LOCATIONS.
3. PROPOSED IMPACTS TO WOTUS ARE REGULATED BY
THE CLEAN WATER ACT SECTIONS 404 AND 401.
4. PERMITS HAVE BEEN OBTAINED TO AUTHORIZE THE
PROPOSED IMPACTS TO WOTUS AND ARE SUBJECT TO THE
TERMS AND CONDITIONS OF THE PERMITS.
5. CWA 404/401 PERMIT REQUIREMENTS, TERMS, AND
CONDITIONS ARE SUMMARIZED ON THIS SHEET ALONG WITH
VARIOUS ASSOCIATED DETAILS AND
SPECIFICATIONS.
6. A COPY OF THE PERMITS HAVE BEEN PROVIDED TO
THE CONTRACTOR AT THE PRE -CONSTRUCTION MEETING.
THE CONTRACTOR IS RESPONSIBLE FOR READING THE
PERMITS, PLANS AND SPECIFICATIONS, AND
UNDERSTANDING HIS/HER RESPONSIBILITIES UNDER THE
PERMITS, WHICH INCLUDE BUT ARE NOT LIMITED TO:
MOOSE BRANCH SUBIDIVISION
JGRAHAM COUNTY Uk DEVEOPMENT AUTHORITY
�Owcmc< GRAHAM COUNTY, NORTH CAROLINA
NO. DATE BY DESCRIPTION I
DOT CONSTRUCTION AND MAINTENANCE ACTIVITIES MANUAL, SUCH AS
SANDBAGS, ROCK BERMS, COFFERDAMS, AND OTHER DIVERSION STRUCTURES
SHALL BE USED TO MINIMIZE EXCAVATION IN FLOWING WATER. EXCEPTIONS
TO THIS CONDITION REQUIRE WRITTEN APPROVAL FROM THE PROJECT
ENGINEER.
10. CULVERTS SHALL BE INSTALLED IN SUCH A MANNER THAT THE ORIGINAL
STREAM PROFILES ARE NOT ALTERED AND ALLOW FOR AQUATIC LIFE
MOVEMENT DURING LOW FLOWS. THE DIMENSION, PATTERN, AND PROFILE OF
THE STREAM ABOVE AND BELOW A PIPE OR CULVERT SHALL NOT BE
MODIFIED BY WIDENING THE STREAM CHANNEL OR BY REDUCING THE DEPTH
OF THE STREAM IN CONNECTION WITH THE CONSTRUCTION ACTIVITY.
11. APPLICATION OF FERTILIZER TO ESTABLISH PLANTED/SEEDED VEGETATION
WITHIN DISTURBED RIPARIAN AREAS SHALL COMPLY WITH ALL OTHER
FEDERAL, STATE AND LOCAL REGULATIONS. FERTILIZER APPLICATION SHALL
BE ACCOMPLISHED IN A MANNER THAT MINIMIZES THE RISK OF CONTACT
BETWEEN THE FERTILIZER AND SURFACE WATERS.
12. IF CONCRETE IS USED DURING CONSTRUCTION, THEN ALL NECESSARY
MEASURES SHALL BE TAKEN TO PREVENT DIRECT CONTACT BETWEEN
UNCURED OR CURING CONCRETE AND WATERS OF THE US. WATER THAT
INADVERTENTLY CONTACTS UNCURED CONCRETE SHALL NOT BE DISCHARGED
TO WATERS OF THE US.
13. ALL PROPOSED AND APPROVED TEMPORARY FILL AND CULVERTS SHALL BE
REMOVED AND THE IMPACTED AREA RETURNED TO NATURAL CONDITIONS
WITHIN 60 CALENDAR DAYS AFTER THE TEMPORARY IMPACT IS NO LONGER
NECESSARY. THE IMPACTED AREAS SHALL BE RETURNED TO ORIGINAL
GRADE, INCLUDING EACH STREAM'S ORIGINAL CROSS SECTIONAL DIMENSIONS,
PLANFORM PATTERN, AND LONGITUDINAL BED PROFILE. ALL TEMPORARY
IMPACTS SHALL BE RESTORED AND STABILIZED WITH NATIVE VEGETATION.
14. ALL PROPOSED AND APPROVED TEMPORARY PIPES/CULVERTS/RIP-RAP
PADS ETC. IN STREAMS SHALL BE INSTALLED AS OUTLINED IN THE MOST
RECENT EDITION OF THE NC SEDIMENT AND EROSION CONTROL PLANNING
AND DESIGN MANUAL OR THE NCDOT BEST MANAGEMENT PRACTICES FOR
CONSTRUCTION AND MAINTENANCE ACTIVITIES SO AS NOT TO RESTRICT
STREAM FLOW OR CAUSE DIS-EQUILIBRIUM DURING USE OF THIS
CERTIFICATION.
15. ANY RIP -RAP REQUIRED FOR PROPER CULVERT PLACEMENT, STREAM
STABILIZATION, OR RESTORATION OF TEMPORARILY DISTURBED AREAS SHALL
BE RESTRICTED TO THE AREA DIRECTLY IMPACTED BY THE APPROVED
CONSTRUCTION ACTIVITY. ALL RIP -RAP SHALL BE PLACED SUCH THAT THE
ORIGINAL STREAM ELEVATION AND STREAM BANK CONTOURS ARE RESTORED
AND MAINTAINED, NOT RESULT IN THE DE -STABILIZATION OF STREAM BED
OR BANKS UPSTREAM OR DOWNSTREAM OF THE AREA, AND NOT RESTRICT
AQUATIC LIFE PASSAGE.
16. ANY RIP -RAP USED FOR STREAM OR SHORELINE STABILIZATION SHALL BE
OF SIZE AND DENSITY TO PREVENT MOVEMENT BY WAVE, CURRENT, OR
STREAM FLOWS, AND WILL CONSIST OF CLEAN ROCK OR MASONRY MATERIAL.
RIP -RAP SHALL NOT BE INSTALLED IN THE STREAMBED EXCEPT IN SPECIFIC
AREAS REQUIRED FOR VELOCITY CONTROL AND TO ENSURE STRUCTURAL
INTEGRITY OF BANK STABILIZATION MEASURES.
17. ALL MECHANIZED EQUIPMENT OPERATED NEAR SURFACE WATERS SHALL BE
INSPECTED, FUELED, LUBRICATED, AND MAINTAINED REGULARLY AND
MAINTENANCE PERFORMED IN A MANNER TO PREVENT CONTAMINATION OF
STREAM WATER FROM FUELS, LUBRICANTS, HYDRAULIC FLUIDS, OR OTHER
TOXIC MATERIALS.
18. HEAVY EQUIPMENT WORKING IN WETLANDS SHALL BE PLACED ON MATS OR
OTHER MEASURES TAKEN TO MINIMIZE SOIL DISTURBANCE.
19. THE CONTRACTOR OR OTHER RESPONSIBLE ENTITY SHALL REPORT ANY
PETROLEUM SPILL OF 25 GALLONS OR MORE; ANY SPILL REGARDLESS OF
AMOUNT THAT CAUSES A SHEEN ON SURFACE WATERS; ANY PETROLEUM
SPILL REGARDLESS OF SIZE THAT OCCURS WITHIN 100-FEET OF SURFACE
WATER; AND ANY PETROLEUM SPILL LESS THAN 25 GALLONS THAT CANNOT
BE CLEANED UP WITHIN 24 HOURS.
A) COMPLIANCE WITH ALL PERMIT CONDITIONS RELATING
TO CONTRACTED CONSTRUCTION ACTIVITIES BOTH
ON -SITE AND OFF -SITE, IF OFF -SITE AREAS ARE
USED FOR PROJECT RELATED PURPOSES (EG:
ACCESS, LAYDOWN, STAGING, BORROW, WASTE, ETC.)
B) CONTRACTOR SHALL NOTIFY PROJECT ENGINEER OF
ANY STAGING AREAS, STOCKPILE AREAS, ACCESS
ROUTES NOT SHOWN ON CONSTRUCTION PLANS PRIOR
TO ANY DISTURBANCE IN THOSE AREAS.
C) COMMUNICATION OF PERMIT COMPLIANCE
RESPONSIBILITIES TO SUBCONTRACTORS WORKING ON
THE PROJECT.
D) COORDINATION WITH PROJECT ENGINEER REGARDING
PERMIT COMPLIANCE RELATED ISSUES AND
QUESTIONS.
E) IMMEDIATE REPORTING TO PROJECT ENGINEER OR
OWNER OF ANY VIOLATION OR SUSPECTED VIOLATION
OF PERMIT CONDITIONS.
F) A COPY OF ALL PERMITS AND CONDITIONS SHOULD
BE MADE AVAILABLE AT THE PROJECT SITE DURING
CONSTRUCTION AND MAINTENANCE ACTIVITIES.
NOT TO SCALE
OFFICE MANAGER
M. CATHEY
PROJECT MANAGER
M. OETTING
DESIGNER
CDB
REVIEWER
B. CATHEY
STREAM IMPACT NOTES
AND DETAILS
DATE PROJECT # FUNDING #
FEBRUARY 2020 15.00341 N/A
SHEET
C=506

HYDROLOGICAL ANALYSIS
MOOSE BRANCH SUBDIVISION
GRAHAM COUNTY RURAL
DEVELOPMENT AUTHORITY
GRAHAM COUNTY, NORTH CAROLINA
CA
S
AL
041598
-GI N EEC-
DDp.� 0�5�� \S��'
Matthew Oetting, P.E.
Christine Brown, CPSWQ, CPESC
1 I IShaping
m C9Communities
Together
1240 19TH Sheet Lane, NW
Hickory, North Carolina 28601
March 31, 2020
Job No. 15.00341

MOOSE BRANCH SUBDIVISION
Job No. 15.00341
March 26, 2020
MOOSE BRANCH SUBDIVISION
GRAHAM COUNTY RURAL DEVELOPMENT
AUTHORITY
HYDROLOGICAL ANALYSIS
PURPOSE OF THE ANALYSIS
The purpose of the analysis is to compare the stormwater runoff parameters during the
predevelopment and post -development conditions. This analysis will take into consideration the
changes due to the proposed subdivision including the addition of built -upon area to the
watershed.
SITE DESCRIPTION
The total land area for the property to be developed is 11.9 acers. The site currently has one
residential property, a cleared electrical line easement and areas which have been cleared in the
past. The proposed site is bordered to the west by Moose Branch Road. Parallel to Moose
Branch Road, is an unnamed tributary of Mauney Branch, whose Surface Water Classification is
Class C. The site is not located within a special flood hazard area per Flood Insurance Rate Map
numbers 3700566100J and 3700566000J effective 2/18/2009. The project is in the Little
Tennessee River Basin. There is limited off -site stormwater coming onto the property. The site
slopes mainly from east to west. The proposed drainage patterns will remain similar to the
existing drainage patterns. The majority of the site slope is 20 to 30%.
The total watershed for the unnamed tributary where it ties to Mauney branch is ±37.4 acres.
The majority of the watershed is undeveloped dense woods. Approximately 4.3 acres of the
watershed is somewhat developed with 2-acre (±) residential lots along Moose Branch Road.
Thirteen lots at approximately 0.5 acres each are proposed for the project. The roadway for the
proposed lots and infrastructure will be built for the project, the houses and driveways will be
built as lots are sold. The proposed project will not alter the size of the watershed.
ANALYSIS PARAMETERS
A weighted CN number and time of concentration was arrived at for each the predevelopment
and the post -development conditions. The soil is in the Hydrology Group B. NOAA
Precipitation values for Robbinsville, NC were used in the analysis.

MOOSE BRANCH SUBDIVISION
Job No. 15.00341
March 26, 2020
ANALYSIS SUMMARY
The following table summarizes the results of the analysis. See attached hydrographs and
velocity and shear stress calculations:
37.4 AC
WEIGHTED
PEAK-
FLOW
VELOCITY
VOLUME
SHEER -
WATERSHED
CN
FLOW
DEPTH
STRESS
1-YR
EVENT
PREDEVELOPMENT
58
7.76 cfs
.38
4.17
54,687
1.01
cu.ft.
POST-
61
12.87
.49
4.82
68,846
1.30
DEVELOPMENT
cfs
cu.ft.
CONCLUSION
The proposed Moose Branch Subdivision should not substantially increase the stormwater
velocity or volume in the existing channel. The capacity and character of the existing channel
are shown to be able to handle the increases due to stormwater run-off from the planned
subdivision. See attached hydrograph modeling and calculations. By field observation the
existing channel was found to consists mainly of loam, gravel and some cobbles and rock. Per
Table 8.05d of the North Carolina Erosion and Sediment Control Manual, the Maximum
Permissible Velocities for Unprotected Soils in Existing Channels, the maximum permissible
velocity for the unnamed tributary would be 5 fps. The attached table, (USACE referenced
document Stability Thresholds for Stream Restoration Materials by Craig Fischenich) references
the permissible shear stress for selected lining materials. For the gravel/cobble 2-in. to 6-in.
existing channel bed, the permissible shear stress is indicated to be between 0.67 lb/sqft and 2.0
lb/sqft. The characteristics of the channel and the vegetative stream buffer will remain
unchanged with the exception of the entrance road and private driveway crossings. The existing
driveway crossing will be removed and the stream restored at that location. In summary, the
proposed project is not expected to degrade the surface waters downstream of the existing
unnamed tributary.

Hydrograph Return Period �qRI y raf ow y graphs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2
Hyd.
No.
Hydrograph
type
(origin)
Inflow
hyd(s)
Peak Outflow (cfs)
Hydrograph
Description
1-yr
2-yr
3-yr
5-yr
10-yr
25-yr
50-yr
100-yr
1
2
SCS Runoff
SCS Runoff
------
------
7.757
12.87
16.71
24.49
-------
-------
-------
-------
49.44
63.32
74.70
92.02
-------
-------
122.72
145.92
Predevelopment
Postdevelopment
Proj. file: Hydro Watershed.gpw
Thursday, 03 / 26 / 2020

Hydrograph Summary RePQrt
y raflow Hydrographs Extension for Autodesk®Civil 3D® 2019 by Autodesk, Inc. v2019.2
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cuft)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
Description
1
SCS Runoff
7.757
2
734
54,687
------
------
------
Predevelopment
2
SCS Runoff
12.87
2
732
68,846
------
------
------
Postdevelopment
Hydro Watershed.gpw
Return Period: 1 Year
Thursday, 03 / 26 / 2020

Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk@ Civil 3D® 2019 by Autodesk, Inc. v2019.2 Thursday, 03 / 26 / 2020
Hyd. No. 1
Predevelopment
Hydrograph type
= SCS Runoff
Peak discharge
= 7.757 cfs
Storm frequency
= 1 yrs
Time to peak
= 12.23 hrs
Time interval
= 2 min
Hyd. volume
= 54,687 cuft
Drainage area
= 37.380 ac
Curve number
= 58*
Basin Slope
= 18.3 %
Hydraulic length
= 2433 ft
Tc method
= LAG
Time of conc. (Tc)
= 27.58 min
Total precip.
= 3.37 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
* Composite (Area/CN) = [(4.250 x 65) + (21.230 x 55) + (11.900 x 60)] / 37.380
Q (cfs)
8.00
. Me
9 Iasi
2.00
0 2 4
Hyd No. 1
6 8
Predevelopment
Hyd. No. 1 -- 1 Year
Q (cfs)
8.00
. 00
4.00
2.00
yr 81 1 I I I I 1 0.00
10 12 14 16 18 20 22 24 26
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk0 Civil 3DO 2019 by Autodesk, Inc. v2019.2
Hyd. No. 2
Postdevelopment
Thursday, 03 / 26 / 2020
Hydrograph type
= SCS Runoff
Peak discharge
= 12.87 cfs
Storm frequency
= 1 yrs
Time to peak
= 12.20 hrs
Time interval
= 2 min
Hyd. volume
= 68,846 cuft
Drainage area
= 37.380 ac
Curve number
= 61 *
Basin Slope
= 18.3 %
Hydraulic length
= 2433 ft
Tc method
= LAG
Time of conc. (Tc)
= 25.56 min
Total precip.
= 3.37 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
" Composite (Area/CN) _ [(4.250 x 65) + (11.900 x 70) + (21.230 x 55)] / 37.380
Postdevelopment
Q (cfs) Hyd. No. 2 -- 1 Year
14.00
12.00
10.00
8.00
6.00
4.00
2.00
000
Q (cfs)
14.00
12.00
10.00
8.00
6.00
4.00
2.00
0 00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
- Hyd No. 2 Time (hrs)

Hydraflow Rainfall Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Friday, 03 / 27 / 2020
Return
Period
Intensity -Duration -Frequency Equation Coefficients (FHA)
(Yrs)
B
D
E
(NIA)
1
52.9072
12.2000
0.8752
--------
2
62.7166
12.9000
0.8783
--------
3
0.0000
0.0000
0.0000
--------
5
65.0704
12.9000
0.8417
--------
10
66.8672
12.5000
0.8057
--------
25
60.7702
11.1000
0.7446
--------
50
57.5182
10.1000
0.6957
--------
100
55.0908
9.2000
0.6574
--------
File name: Robbinsville.IDF
Intensity = B / (Tc + D)"E
Return
Period
Intensity Values (in/hr)
(Yrs)
5 min
10
15
20
25
30
35
40
45
50
55
60
1
4.39
3.51
2.94
2.53
2.23
2.00
1.81
1.66
1.53
1.42
1.33
1.25
2
4.98
4.01
3.37
2.92
2.58
2.31
2.10
1.92
1.78
1.65
1.54
1.45
3
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
5
5.74
4.66
3.95
3.44
3.05
2.75
2.51
2.31
2.14
1.99
1.87
1.76
10
6.66
5.44
4.63
4.05
3.61
3.26
2.98
2.75
2.56
2.39
2.25
2.12
25
7.68
6.28
5.36
4.70
4.21
3.82
3.51
3.25
3.03
2.84
2.68
2.54
50
8.70
7.13
6.11
5.38
4.84
4.41
4.06
3.78
3.54
3.33
3.15
2.99
100
9.63
7.90
6.78
6.00
5.40
4.94
4.57
4.25
3.99
3.77
3.57
3.40
Tc = time in minutes. Values may exceed 60.
PreciD. file name: O:\Public\Chris\Hvdroaraohs\Robbinsville.Dco
Rainfall Precipitation Table (in)
Storm
Distribution
1-yr
2-yr
3-yr
5-yr
10-yr
25-yr
50-yr
100-yr
SCS 24-hour
3.37
4.04
0.00
4.14
5.77
6.88
6.41
8.79
SCS 6-Hr
2.11
2.42
0.00
2.93
3.38
4.04
4.45
5.47
Huff -1st
0.00
1.55
0.00
2.75
4.00
5.38
6.50
8.00
Huff-2nd
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Huff-3rd
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Huff-4th
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Huff-Indy
0.00
1.55
0.00
2.75
4.00
5.38
6.50
8.00
Custom
0.00
1.75
0.00
2.80
3.90
5.25
6.00
7.10

Channel Report
Hydraflow Express Extension for Autodesk0 AutoCADO Civil 3D0 by Autodesk, Inc.
Predevelopment
Stream Analysis
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z:1)
= 5.00, 5.00
Total Depth (ft)
= 4.20
Invert Elev (ft)
= 1.00
Slope (%)
= 4.25
N-Value
= 0.030
Calculations
Compute by:
Known Q
Known Q (cfs)
= 7.76
Elev (ft) Section
6.00
5.00
4.00
3.00
2.00
1.00
Niue
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Thursday, Mar 26 2020
= 0.38
= 7.760
= 1.86
= 4.17
= 6.88
= 0.46
= 6.80
= 0.65
Depth (ft)
5.00
4.00
3.00
2.00
1.00
ewe
_� nn
5 10 15 20 25 30 35 40 45 50 55 vv
Reach (ft)

Channel Report
Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.
Post -development Stream Analysis
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z:1)
= 5.00, 5.00
Total Depth (ft)
= 4.20
Invert Elev (ft)
= 1.00
Slope (%)
= 4.25
N-Value
= 0.030
Calculations
Compute by:
Known Q
Known Q (cfs)
= 12.87
Elev (ft) Section
6.00
5.00
4.00
3.00
2.00
1.00
rOY11911
Highlighted
Depth (ft)
Q (cfs)
Area (sqft)
Velocity (ft/s)
Wetted Perim (ft)
Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Thursday, Mar 26 2020
= 0.49
= 12.87
= 2.67
= 4.82
= 8.00
= 0.60
= 7.90
= 0.85
Depth (ft)
5.00
4.00
3.00
2.00
1.00
F I1
_I nn
I 5 10 15 20 25 30 35 40 45 50 55 vV
Reach (ft)

MOOSE BRANCH SUBDIVISION
3/26/2020
ICDB
Calculated
Max. Allowable
CHANNEL
Q1(1)
SIDE
TEMP.(2)
LINER(3)
Q1 DEPTH
Shear Stress
Shear Stress
COMMENT
NO.
CFS
SLOPE, Z
LINER
n
FT.
PSF
PSF
ROAD A
1 yr PRE
7.8
5.0
0.033
0.38
1.01
2.00
OK
1 yr POST
12.9
5.0
0.033
0.49
1.30
2.00
OK
Shear Calculation: (62.4
Ib/ft) x Q1 Depth
(ft.) x slope

StreamStats
Page 2 of 3
Moose Branch StrearnStats Report
Region ID:
Workspace ID:
Clicked Point (Latitude, Longitude):
Time:
�D
Basin Characteristics
Parameter Code
Parameter Description
Value
Unit
DRNAREA
Area that drains to a point on a stream
0.0575
square miles
PCTREGI
Percentage of drainage area located in Region 1
0
percent
PCTREG2
Percentage of drainage area located in Region 2
100
percent
PCTREG3
Percentage of drainage area located in Region 3
0
percent
PCTREG4
Percentage of drainage area located in Region 4
0
percent
PCTREG5
Percentage of drainage area located in Region 5
0
percent
Peak -Flow Statistics ParameterslPeaksomhealusavers gm120095158I
Parameter Code
Parameter Name Value
Units
Min Limit
Max Limit
DRNAREA
Drainage Area 2� (� �a 0.0575
square miles
1
9000
PCTREG1
Percent Area in Region 1 0
percent
0
100
PCTREG2
Percent Area in Region 2 100
percent
0
100
PCTREG3
Percent Area in Region 3 0
percent
0
100
PCTREG4
Percent Area in Region 4 0
percent
0
100
PCTREG5
Percent Area in Region 5 0
percent
0
100
Peak -Flow Statistics DisclaimerslPeak SMheaec US over 1 84m120995158)
one or more of the parameters is outside the suggested range. Estimates were extrapolated with unknown errors
Peak -Flow Statistics Flow ReportlPeak samheaer us aver 1 egmi 20a9 51 ssi
Statistic
Value
2 Year Peak Flood
11.9
5 Year Peak Flood
24.6
10 Year Peak Flood
35.2
25 Year Peak Flood
50.4
Unit
fta3/s
ft^3/s
ft^3/s
ft"3/s
htti)s:Hstreamstats.usas.Rov/ss/ 3/25/2020

StreamStats
Page 3 of 3
Statistic
Value
Unit
50 Year Peak Flood
61.6
ft^3/s
100 Year Peak Flood
75.1
ft^3/s
200 Year Peak Flood
87.2
ft^3/s
500 Year Peak Flood
106
ft13/s
Peak -Flow Statistics Citations
Weaver, J.C., Feaster, T.D., and Gotvald, A.J.,2009, Magnitude and frequency of rural floods in the Southeastern United States, through
2006—Volume 2, North Carolina: U.S. Geological Survey Scientific Investigations Report 2009-5158, 111 p.
(http://Pubs.usgs.gov/sir/2009/51 58/)
USGS Data Disclaimer: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were
collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty
expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.
USGS Software Disclaimer: This software has been approved for release by the U.S. Geological Survey (USGS). Although the software has been subjected to rigorous review, the USGS reserves
the right to update the software as needed pursuant to further analysis and review. No warranty, expressed or implied, is made by the USGS or the U.S. Government as to the functionality of the
software and related material nor shall the fact of release constitute any such warranty. Furthermore, the software is released on condition that neither the USGS nor the U.S. Government shall
be held liable for any damages resulting from its authorized or unauthorized use.
USGS Product Names Disclaimer: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Application Version: 4.3.11
https:Hstreamstats.usgs.gov/ss/ 3/25/2020

StreamStats Page 2 of 6
Mauney Branch StreamStats Report
Region ID: NC
Workspace ID: NC20200325214120879000
Clicked Point (Latitude, Longitude): 35.32574,-83.81461
Time: 2020-03-25 17:41:37 -0400
r, {
Lip fir'r j;i Ltjft;l [11
Basin Characteristics
Parameter
Code Parameter Description Value Unit
DRNAREA Area that drains to a point on a stream 0.33 square
miles
PCTREG1 Percentage of drainage area located in Region 0 percent
1
PCTREG2 Percentage of drainage area located in Region 100 percent
2
https:Hstreamstats.usgs.gov/ss/ 3/25/2020

StreamStats
Page 4 of 6
Parameter
Min
Max
Code
Parameter Name
Value
Units
Limit
Limit
PCTREG2
Percent Area in Region
100
percent
0
100
2
PCTREG3
Percent Area in Region
0
percent
0
100
3
PCTREG4
Percent Area in Region
0
percent
0
100
4
PCTREG5
Percent Area in Region
0
percent
0
100
5
Peak -Flow Statistics Disclaimers[Peak southeast US over 1 sgmi 2009 5158]
One or more of the parameters is outside the suggested range. Estimates were extrapolated
with unknown errors
Peak -Flow Statistics Flow Report[Peak southeast
us over 1 sgmi 2009 5158]
Statistic
Value
Unit
2 Year Peak Flood
46.2
ft^3/s
5 Year Peak Flood
91.1
ft^3/s
10 Year Peak Flood
128
ft"3/s
25 Year Peak Flood
178
ft^3/s
50 Year Peak Flood
216
ft^3/s
100 Year Peak Flood
261
ft^3/s
200 Year Peak Flood
301
ft"3/s
500 Year Peak Flood
364
ft^3/s
Peak -Flow Statistics Citations
Weaver, J.C., Feaster, T.D., and Gotvald, A.J.,2009, Magnitude and frequency of
rural floods in the Southeastern United States, through 2006—Volume 2, North
Carolina: U.S. Geological Survey Scientific Investigations Report 2009-5158, 111
p.(http://pubs.usgs.gov/sir/2009/5158/)
https:Hstreamstats.usgs.gov/ss/ 3/25/2020

Table 2. Permissible Shear and Vel
for Selected Lining Materials'
Soils
Fine colloidal sand
0.02 - 0.03
1.5
A
Sandy loam (noncolloidal)
0.03 - 0.04
1.75
A
Alluvial silt (noncolloidal)
0.045 - 0.05
2
A
Silty loam (noncolloidal)
0.045 - 0.05
1.75 - 2.25
A
Firm loam
0.075
2.5
A
Fine gravels
0.075
2.5
A
Stiff clay
0.26
3 - 4.5
A, F
Alluvial silt (colloidal)
0.26
3.75
A
Graded loam to cobbles
0.38
3.75
A
Graded silts to cobbles
0.43
4
A
Shales and hardpan
0.67
6
A
Gravel/Cobble
1-in.
0.33
2.5 -
A
2-in.
0.67
3 - 6
A
6-in.-- -
- 2.0 -
- 4 - 7.5
A
12-in.
4.0
5.5 - 12
A
Vegetation
Class A turf
3.7
6-8
E, N
Class B turf
2.1
4-7
E, N
Class C turf
1.0
3.5
E, N
Long native grasses
1.2 - 1.7
4-6
G, H, L, N
Short native and bunch grass
0.7 - 0.95
3-4
G, H, L, N
Reed plantings
0.1-0.6
N/A
E, N
Hardwood tree plantings
0.41-2.5
N/A
E, N
Temporary Degradable RECPs
Jute net
0.45
1 -2.5
E, H, M
Straw with net
1.5 - 1.65
1 - 3
E, H, M
Coconut fiber with net
2.25
3-4
E, M
Fiberglass roving
2.00
2.5-7
E, H, M
Non -Degradable RECPs
Unvegetated
3.00
5-7
E, G, M
Partially established
4.0-6.0
7.5 - 15
E, G, M
Fully vegetated
8.00
8 - 21
F, L, M
Ri,orao
6 - in. d5o
2.5
5 - 10
H
9- in. d50
3.8
7-11
H
12- in. d50
5.1
10-13
H
18- in. d50
7.6
12-16
H
24- in. d5o
10.1
14-18
E
Soil Bioengineering
Wattles
0.2 - 1.0
3
C, I, J, N
Reed fascine
0.6-1.25
5
E
Coir roll
3-5
8
E, M, N
Vegetated coir mat
4-8
9.5
E, M, N
Live brush mattress (initial)
0.4 - 4.1
4
B, E, I
Live brush mattress (grown)
3.90-8.2
12 B, C, E, I, N
Brush layering (initial/grown)
0.4 - 6.25
12
E, I, N
Live fascine
1.25-3.10
6-8
C, E, I, J
Live willow stakes
2.10-3.10
3 - 10
E, N, O
Hard Surfacing
Gabions
10
14 - 19
D
Concrete
12.5
>18
H
Ranges of values generally reflect multiple sources of data or different testing conditions.
A. Chang, H. H. (1988).
F. Julien, P.Y. (1995).
K. Sprague, C.J. (1999).
B. Florineth. (1982)
G. Kouwen, N.; Li, R. M.; and Simons, D.B., (1980).
L. Temple, D.M. (1980).
C. Gerstgraser, C. (1998).
H. Norman, J. N. (1975).
M. TXDOT (1999)
D. Goff, K. (1999).
I. Schiechtl, H. M. and R. Stern. (1996).
N. Data from Author
(2001)
E. Gray, D.H., and Sotir, R.B. (1996).
J. Schoklisch, A. (1937).
O. USACE (1997).
ERDC TN-EMRRP SR-29 5

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4/6/2020
New Submission
REVISED PCN INFORMATION
D. Proposed Impacts Inventory
1. Impacts Summary
ia. Where are the impacts associated with your project? (check all that apply):
OO Wetlands) Streams -tributaries
O Open Waters
O Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
"W." will be used in the table below to represent the word "wetland".
Buffers
https://edocs.deq.nc.gov/Forms/Pre-Construction_Notification_Form 8/16

4/6/2020
New Submission
2a. Site #* M I2a1 Reason*(?) 'lrb.
full
Construction Acce:
JE—
Impact type* M
♦
2c. Type of W.
Headwater Forest •
2d. W. name"
I1Netland A
�
2e. Forested" 2f. Type of Jurisdicition*
)
Yes • Both ♦ I
2g• Impact
area
003
(acres)
V2 Road Crossing
i—
P ♦
Headwater Forest •
�1Netland A
[ J
Ye��
Both ♦ I
019
(acres)
/3 Road Crossing
L
1 P ♦ 1
Headwater Forest
I1Netland A
Yes ♦
Both ♦ I
.004
(acres)
11'/4 Construction Acce,
i
♦ 1
FT
Headwater Forest •
Wetland A
EE�
Both ♦ I
003
(acres)
/5
Construction Acce:
f T • ]
I`
[ Headwater Forest •
N1/etland A l�Yes
11
•
Both ♦
.002
(acres)
I""�
Construction Acce:
T • ]
Headwater Forest ♦ ]
N1/etland A j
)�
Yes •
Both •
.002
(acres)
/V7 Roa�1[�ea��ter
g
P ♦
I`
Forest .'
Wetland A
nj[B.th
♦ I�1-
001
(acres)
Add
2g. Total Temporary Wetland Impact
0.010
2g. Total Permanent Wetland Impact
0.024
2g. Total Wetland Impact
0.034
2h. Comments:
Revised PCN impacts due to plan revisions addressing comments from NCDEQ Division of Water Resources.
Original PCN submitted on 1/20/2020. Revised on March 6, 2020 due to plan revisions addressing comments from
NC Wildlife Resource Commission.
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this question for all stream sites impacted.
https://edocs.deq.nc.gov/Forms/Pre-Construction_Notification_Form 9/16

4/6/2020
New Submission
"S." will be used in the table below to represent the word "stream".
Fla,
Reason for impact * (')
3b.lmpact type"
3c. Type of impact*
3d. S. name* 13e.
Stream Type*
M
3f. Type of
Jurisdiction*
3g. S. width*
3h. Impact
length*
1
POnstruction Access
Temporary • 1
Workpad/Causeway ♦
UT-1 Mauney Creek
Perennial ♦ ]
Both ♦ ]
Average (feet)
10
(linearfeet)
S2
Raad CfOsslny
Permanent • ]
Fill ♦
1 UT-1 Mauney Creek
J
Perennial ♦ ]
Both ♦ 1
Average (feet)
I.
(linear feet)
S3
�COnStructlOn Access
Temporary • 1
Workpad/Causeway ♦
�10T-1 Mauney Creek
JAverage
Perennial ♦
Both • 1�
(feet)
11
(linearfeet)
��Llo
nstruction Access
Temporary ♦ ]
17-
Workpad/Causeway ♦ I
1UT-1 Mauney Creek
Perennial ♦ ]
Both • ]
Average (feet)
10
(linearfeet)
ss
rRoad Crossing 1
11
Permanent ♦ 1
Fill
r
1 UT-1 Mauney Creek
11
[Perennial ♦ ]
Both
Averege(fcet)
(linearfeet)
S6
Construction Access
Temporary ♦ 1
Workpad/Causeway . I
�UT-1 Mauney Creek
Perennial ♦
Both ♦ 1
4�
Average (feet)
12
(linear feet)
S7
Llonstruction ACC2SS
Temporary ♦ 1
Workpad/Causeway ♦
��T-i Mauney Creek
t
Perennial ♦
Both ♦ ]
Average (feet)
r(linear feet)
S8
Pnstruction Access
Temporary ♦ 1
Workpad/Causeway ♦ I
��UT-1 Mauney Creek
Perennial ♦ ]
Both • ]
Average (feet)
(linear feet)
Add another impact
** All Perennial or Intermittent streams must be verified by DWR or delegated local government.
31. Total jurisdictional ditch impact in square feet:
31. Total permanent stream impacts:
133
3i. Total temporary stream impacts:
53
hftps:Hedocs.deq.nc.gov/Forms/Pre-Construction_Notification_Form 10/16

4/6/2020
New Submission
31. Total stream and ditch impacts:
186
3j. Comments:
Revised PCN impacts due to plan revisions addressing comments from NCDEQ Division of Water Resources.
Original PCN submitted on 1/20/2020. Revised on March 6, 2020 due to plan revisions addressing comments
from NC Wildlife Resource Commission.
E. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project: *
"Additional Avoidance and Minimization Measure" - The layout of the proposed shared drive has been revised to
mostly avoid impacts to wetlands (see updated Impacts Map and construction plans).
https://edocs.deq.nc.gov/Forms/Pre-Construction_Notification_Form 11/16

TERIPORART
IMPACT Sl
DETAIL - IMPACT AREA A 1 INCH = 20 FEEL
DETAIL - IMPACT AREA B 1 INCH = 20 FEET
Study
Limits �, p UT-1 to
hh Mauney Creek �o
LEGEND
� II
IMPACT
Study Limits AREA C
RV r 8s
to
o -
Limits of -
Disturbance -- - - - - - - -
Wetland
Limits GSQPGFR������_��
r -P
Stream
Limits F IMPACT
4u
Proposed
Contours �P
Existing I
Contours I T — 0� hry
DATE PROJECT#
L
/
IMPACT
AREA B
4/6/2020
15.00341
MOOSE BRANCH SUBDIVISION
1013 State Farm Road
Boone, NC 28607
OFFICE MANAGER
M. CATHEY
DELINEATOR
J. HERMAN
GRAHAM COUNTY RURAL DEVELOPMENT AUTHORITY
M�
gill
NC Firm License # C-0459
PROJECT MANAGER
REVIEWER
mcgillassociates.com
GRAHAM COUNTY, NORTH CAROLINA
B. CATHEY
J. SWAIM
STREAM AND WETLAND IMPACTS
TABLE
IMPACT TYPE I TOTAL
Temporary Stream
40 Linear Feet
Impacts
Permanent Stream
129 Linear Feet
Impacts
Temporary Wetland
0.010 Acres
Impacts
Permanent Wetland
0.024 Acres
Impacts
TEMPORARY
PROPOSED IMPACT S8
PIPE REMOVAL 5 L.F.
AND STREAM VA)
RESTORATION O
100
TEMPORARY IMPACT S7
5 L.F.
DETAIL - 1 INCH = 20 FEET
IMPACT AREA C
JURISDICTIONAL WETLANDS AND WATERS
IDENTIFIED ON THIS MAP HAVE BEEN LOCATED
WITHIN SUB -METER ACCURACY UTILIZING A
THALES MAPPING GRADE GLOBAL
POSITIONING SYSTEM (GPS) AND THE
SUBSEQUENT DIFFERENTIAL CORRECTION OF
THAT DATA. GPS POINTS MAY DEMONSTRATE
Mauney Creek , UNCORRECTABLE ERRORS DUE TO
TOPOGRAPHY, VEGETATIVE COVER, AND/OR
MULTIPATH SIGNAL ERROR.
NOTE: THE ILLUSTRATED WETLAND AND
STREAM LOCATIONS ARE APPROXIMATE. THESE
AREAS HAVE BEEN FLAGGED IN THE FIELD;
HOWEVER, THEY HAVE NOT BEEN SURVEYED.
,J \
ALTHOUGH MCGILL ASSOCIATES, P.A. (MCGILL)
J /
IS CONFIDENT IN OUR ASSESSMENT, THE US
ARMY CORPS OF ENGINEERS IS THE ONLY
AGENCY THAT CAN MAKE FINAL DECISIONS
REGARDING JURISDICTIONAL WETLAND AND
WATERS OF THE US DELINEATIONS.
THIS MAP WAS PREPARED BY MCGILL USING
411
m
THE BEST INFORMATION AVAILABLE TO
y 5
MCGILL AT THE TIME OF PRODUCTION. THIS
Z
MAP IS FOR INFORMATIONAL PURPOSES ONLY
AND SHOULD NOT BE USED TO DETERMINE
PRECISE BOUNDARIES, ROADWAYS, PROPERTY
BOUNDARY LINES, NOR LEGAL DESCRIPTIONS.
THIS MAP SHALL NOT BE CONSTRUED TO BE
AN OFFICIAL SURVEY OF ANY DATA DEPICTED.
100 0 50 100 200
GRAPHIC SCALE DIVISION VALUE = 100 FEET
FIGURE
IMPACTS MAP 1

- J �
2150 160 \\ 1\ \\\
215
RREA--083�ae�\\
\\\\
2140 L CUL-DE-SAC
STA. 11 +87.90
213 -
�/
--- �- o
-,SOT \\ \\ \ I I I I ( \ \ \\ \ \\ \ \\ \\ \�xp - ?75t0 oO \ /
�11'4R�'4: Q Ia-2140
n.
O1 T/��- __ \\ \ \ 1 \ 1 1 1 1 1 \ \ IAREW :10.49 a-c.� _--- -t?7
A /A `90.77 ac\\ \\ \\ 1 1 1 1 1 1 1 1\ \ \ \ \ \\ \------ S _ \
2°9--- �'� \ \ \\ \ \` 1 11 1 1 1 \\ \ \ \\\\ \\ \ - -AREA O.ac 2130_//-� O., PT: 8+93.84
C. v \ �\ SSW V v v \ y - - -AREA-0-5
-----_ - \ 2120
1
2165
2160
2155
2150
2145
2140
2135
2130
2125
2120
2115
2110
2105
\ '/ / ///�/ 4 C�\\� \---------- rJl
EXISTING PROPERTY \ _ _ � � \ � /�� 2080 20a0 7p0 � _ _ _ '_ _ ROPOSED 230 LF
----------
LINE / x \ 2� - - - _ - -' /' = �� j ROPOSED
DETAIL. 2100
66s6 �o_ \ 70 '`---__--_---__\---Ao/-_;;--����0 )f SHOULDER WIDTH 5.
v2095
�- _
n
0� / _ _ - W 1 ROPOSED 4 x4 Y.I.
T\\\\\\\\ \ \ \ �/ / �X \ \
• I w/ INLET OPENINGS 2090
W STORY
- �/7 --20� \ O \ \\ ` - _ - ��� \ %'o' - S4 / ON ALL 4 SIDES
EIIING _ O 20 cam- TOP: 2083.00'
NJ RE` \ \ ,. - 3� / "I- -0o� y ° y I INV. OUT: 2079.00' 2085
- - ROPOSED 18» RCP,
_ _ CLASS III 80 LF
0 - KEYED INTO SLOPE p
6g• ° \2 6g• 1� _ \ 2080
P �\ \\ `\ \ \� _ _ - 2oso - ' - 2� V�/ (REFER TO DETAIL
_ ` \ _ _ - ON C-502 \C\`tOV \�--Ow ` Q \ �5a 2oao \ �� �� \\ \ \ \ \ \2075
I�TIIT� o �v )
�. �RE�ac. \ \\ \ Ai�€�:;0 55�� - �Et6C B - - - - ?08 3Q- I \ I ROPOSED 4 x4 Y.I.
- _ __� 0 w/ INLET OPENINGS
2 7 - -�` I ON ALL 4 SIDES
�8T _ _ - -�970 \ \ P TOP: 2064.00' 2070
-AREP\-0- 51ac.- - - _ - - _ 1 \o T I
I � � INV. IN: 2061.00
____-__GP_ J INV. OUT: 2060.00'
\\JG `�� \ \ �'`� �. I' ��= ��- \ - - -2060- - \ \\\I ` \\ \\\ \ \ 2065
\S� PROPOSED 39 LF e , \\�_ ��Q QRIVE 1 �0T-4 , , \ \ \ \ _ ROPOSED 18" RCP,
\ CLASS III 77 LF
G� \ \ \ % r - _ - _ _ \ \ \ \ ROPOSED 4 x4 Y.I.
51I N31" CLASS IV 2R°6°$g9 \ \ /. �� - � � � 4 VE- _ -A : 0.58 ac. \ \ \ \\ \ 2060
ARCH RCP CULVERT �\ °,zoy / \ \TA_ 0+00- _ - - _ _ _ _ _ _ \ \\ \\ \ ` \\.w/ INLET OPENINGS
WITH ENDWALLS \�,� ��" \�� 3 �� �, \\ ` o,. \ - \ \\ LOT \ \ \ \ ° \ " ONN ALL 4 SIDES
APPROX. INVERT ELEV. ��. \e°5�� e �� ��\ \\ \ = \ 7 ac\ \ \ _ \ TOP: 2051.00' 2055
INV. IN:2059.0' x�!0\'e o0 5G9� c \ / 1 o� \5 �\��\ �� \-- -'/ \ \ \ \ \� \�
F. STA: 0+56.
ELEV 2064
TA - 8ii3(
D. = 1 .42
32.09' C,
Gz\e651 yg 1205 �05 +�,cxx� �\\ \ \ \ \ \ \� INV. IN: 2048.00
INV. OUT: 2057.0 \� 063 °�o .zh•� \ \ \ \ �"�. / - \ \ \\� _ _ XISTI G PA MENT
�-- V � INV. OUT: 2046.00
(REFER TO NOTES 2 ° - .
AND 3) `( �� J•o� � i`. .\ 1 / ,
\� \ ROPOSED 72 LF
18" RCP CLASS IV
-1 +00 0+00 1 +00
�)T-6, _ - - , w/ END SECTION
\ s \ \ ��- - �\ \ - J _ ANND PERM. SWALE
\= osO\ \ _ w/ RIP -RAP
_ STABILIZATION
\ \ �_ _TRE�O�� \ - INV. OUT:2042.00'
50' ROW WIDTH (TYP.
19 PAVEMENT WIDTH (TYP. _ - - -_-
ROAD ALIGNMENT INFORMATION ���\ P \ \?^ \\ C3 \ \^ _ _Is,_ _ _ \ \ \-
G
C1 R=90.00' C2 R=90.00'
PC 1+80.89 PC 5+97.02
PT 3+10.55 PT 8+93.84 /
C3 R=50.00' C4 R=45.00' \
PC 0+19.32 PC 0+75.28
PT 0+75.28 PT 1 +77.51
C5 R=45.00' C6 R=20.00'
PC 1+77.51 PC 0+16.82
PT 2+29.43 PT 0+25.31
NOTES:
1. SEE ROAD AND PAVEMENT CROSS -SECTIONS ON SHEET C-501.
2. ALL STORM CULVERTS TO BE TREATED WITH NCDOT STANDARD
ENDWALLS PER STANDARD DRAWING 838.01.
3. STREAM CULVERTS TO BE INSTALLED SUCH THAT 20% OF THE
PIPE DIAMETER IS BELOW THE NATURAL STREAM BED AND IN
ALIGNMENT WITH THE STREAM CHANNEL. CONTRACTOR SHALL
VERIFY ELEVATION AND ALIGNMENT WITH ENGINEER PRIOR TO
INSTALLATION. SEE DETAIL SHEET C-505.
4. THE CONTRACTOR SHALL FLAG THE BOUNDARIES OF EXISTING
WETLANDS PRIOR TO COMMENCING CONSTRUCTION. ONLY THE
AMOUNTS DESIGNATED AS SHOWN SHALL BE DISTURBED.
55 Broad Street
Asheville, NC 28801
828.252.0575
NC Firm License # C-0459
mcgillassociates.com
°�eJ� 1 \
�• �JP N� A
0
SHARED DRIVE 1
STA. 0+19.00
Cq i �,�,�gEFORF)
G
EA [_
041598 = o
F O NE
.5 EGGING PP
\
ROAD 'A' PROFILE
HIGH PT. STA: 4+0 .66
PV STA = 3+94.7
-1--
A.D. = 20.65
00
206.4 ' VC
M115
LOW T. STA 5+96.
PVI STA = 6+40.2
P OPOS D .D. = g7.23
Vlvv
R -P (`I II VFRT 272.30 VC
2+00
\ 50 FT STREAM BUFFER FOR SEPTIC, TYP
20�\ \/ire
2055
25 FT STREAM BUFFER, TYP
T-
\ 032
ROPOSED 43 LF \��z //G�e�� zoz2o yo°
36 CLASS IV RCP, eo e� _ _ _ 1y�
WITH ENDWALLS 4%`e�$s �; \��•°
APPROX. INVERT ELEV. G° \$o\z$\,, Zp26. e _ Il
INV. IN:2030.40' �56.\°`�" 506a
INV. OUT: 2028.20' 0 °? oze 1hzop251g �
(REFER TO NOTES 2 \�\� �` \\k��.-z 6 Goo Ql
AND 3)
I I
NO. DATE BY
3+00 4+00 5+00
N
cd rn
LOW PT. STA: 0+90.93
LOW PT ELEV: 2038.47
o
PVI STA = 1+15.00
II
PVI ELEV = 2037.18
A.D. = 13.50
K: 7.41
N
LQ 100.00, VC
Y
p
Q
�
w
O
m
N
PVI STA = 9+9C
D. = 0.00
242.30 VC
6+00 7+00 8+00 9+00 10+00
c
SHARED DRIVE PROFILES
II
v
GRADE BREAK STA = 2+29.43
ELEV = 2048.62 2055 2050
Ir
>
00CD
(nCV
7
2050
+
2050
O
N
U
U
2045
>00
>
W
W g
2045
2040
�3.
2040
2035
2035
2030
CULVERT
2030
EXISTI
G PA
MEN
CR
.
-1 +00 0+00 1 +00 2+00
nil
SHARED DRIVE 1
MOOSE BRANCH SUBIDIVISION
GRAHAM COUNTY Uk DEVEOPMENT WHORITY
GRAHAM COUNTY, NORTH CAROLINA
DESCRIPTION
3+00 4+00
60 0
30 60 120
GRAPHIC SCALE
DIVISION VALUE = 60 FEET
OFFICE MANAGER
DESIGNER
M. CATHEY
PO
PROJECT MANAGER
REVIEWER
M. OETTING
B. CATHEY
O
N
II
w
J
w
N
N
N_
II
N
II
11 +00 12+00 13+00 141
N
00
O
II
H
Q
w
w
m
u 2050
0
Q
2045
2045
2040
2040
ASS
D�
2035
2035
2030
2030
-1 +00 0+00 1 +00 2+00
SHARED DRIVE 2
PLAN AND PROFILE
ROAD 'A'
DATE PROJECT # FUNDING #
FEBRUARY 2020 15.00341 N/A
PROFILE SCALE
HORIZONTAL: 1 "=100'
VERTICAL: 1 "=10'
SHEET
C=1 01

NOTE:
1. GLUED JOINTS WILL NOT BE PERMITTED.
2. VERTICAL BLOW —OFF ARRANGEMENT TO BE USED
ONLY WHEN HORIZONTAL BLOW —OFF IS NOT POSSIBLE.
PLASTIC METER BOX
AND APPROVED
COVER
APPROVED WARNING TAPE %/\%/ \;
24" ABOVE PIPE (PVC
ONLY)_____
STD. METER B
AND LID
NO. 12 COATED COPPER---'
TRACING WIRE (PVC ONLY)
CONCRETE DEAD —MAN
WIDTH: 1 FOOT OUTSIDE
DITCH LINE, EACH SIDE.
I" RAI I \/AI \/I
d 4" GALV.
ROD
d
A
< ° /o<
\/\� SDR-13.5
DUCTILE IRON TRANSITION SLEEVE —
FOR 2" PVC TO 2" THREADED WITH
LUGS FOR RODDING TO DEADMAN
rW— BLOW -OFF DETAIL
22 UPDATED MARCH, 2017
NOT TO SCALE
BRASS OR COPPER TRACING
WIRE WITHIN 1' OF TOP (PVC
ONLY)
BANK FULL
ELEVATION
EXISTING GRADE
FINAL GRADE
CORRUGATED
METAL PIPE
//, BELOW ELEVATION REAMBED
ATERIAL
OF STREAM BED
BRASS NIPPLE FOR HORIZONTAL BLOWOFF. SEE PLANS FOR SIZE. (SEE NOTES FOR REQUIRED DEPTH)
/
EXTEND TO DAYLIGHT.
Notes:
1 /
WASHED STONE
BRASS ELBOW AND NIPPLE FOR
VERTICAL BLOW —OFF SIZE
ACCORDING TO PLANS.
2" IRON BODY, DOUBLE DISC GATE
VALVE W/ 2" SQUARE OPERATING NUT
IX
/ALVE
ASS NIPPLE
.Im
WATER MAIN
TAP TO BE MADE AT HIGH POINT OF PIPELINE
ALL COPPER TUBING AND BRASS PIPING TO MAINTAIN A POSITIVE GRADE
AIR RELEASE VALVE DETAIL
NOT TO SCALE
Culverts greater than 48 inches in diameter will be buried at least one foot below the bed of the stream. Culverts 48
inches in diameter or less shall be buried 20% of the pipe diameter to maintain aquatic passage, and every effort shall be
made to maintain the existing channel slope.
The bottom of the culvert must be placed at a depth below the natural stream bottom to provide for passage during
drought or low flow conditions.
BOLT -ON TYPE SKID
OR STAINLESS STEEL
STAINLESS STEEL BOI
STEEL ENCASEMENT
CULVERT - COUNTER SINK TYPICAL
NOT TO SCALE
MASONRY SEAL AT
BOTH ENDS OF
ENCASEMENT PIPE
WEEP HOLE ON BOTTOM
OF THE PIPE AT THE
LOWER END
BC
(MIN. 2 PER JOINT,
SPACED EVENLY)
CARRIER PIPE
2 PIECE STAINLESS S1 LLL
SUPPORT AND SPACER w/
2 PER JOINT OF CARRIER PIPE
"T��' ENCASEMENT
„BRIER PIPE w/
RESTRAINED JOINTS,
FIELD LOCK GASKETS
OR EQUAL.
NOTE: FOR PRESSURE CARRIER PIPES, IF SUITABLE UNDISTURBED EARTH IS NOT AVAILABLE FOR THRUST BLOCKS
DUE TO EXCAVATION, CONTRACTOR SHALL ATTACH THREADED RODS AS SPECIFIED IN THRUST BLOCK DETAILS TO
THE ENCASEMENT AND ROD FITTINGS DIRECTLY TO THE ENCASEMENT PIPE. ATTACHMENT OF THE RODS SHALL BE
BY WELDING DIRECTLY TO THE ENCASEMENT PIPE OR BY WELDING EYE BOLTS TO THE ENCASEMENT FOR
ATTACHMENT OF THREADED RODS WITH NUTS. MINIMUM OF THREE RODS REQUIRED PER FITTING.
S ENCASEMENT DETAIL - STANDARD
16 UPDATED MARCH, 2017
NOT TO SCALE
11LL1BOTI I VLLJ
ON TOM
AT LOWER
END OF PIPE
SEE PAVEMENT CROSS SECTION DETAIL,
MOOSE BRANCH ROAD ROW
SAWCUT EXISTING PAVEMENT
BITUMINOUS TACK COAT
-- --
EXISTING
EXISTING
L- - - - - - - - - - - - - - - - - --- - - - - - -
Z2, �
BITUMINOUS TACK COAT
2'-0" PIPE 2'-0"
O.D.
z
TRENCH BACKFILL SHALL
BE COMPACTED TO 100%
(FULL DEPTH — SEE NCDOT
SPECA, SECTION 312000,
SUBSECTION 3.16)
//\\\j \\\\ UNDISTURBED EARTH
PAVEMENT REPAIRS ON ROADS NOT TO BE RESURFACED
NOTES:
1. EDGE TO BE SAWED WITH A CONCRETE SAW TO A NEAT SQUARED EDGE AND CLEANED OF DUST BEFORE TACK COATIS
APPLIED.
2. EDGES TO BE TACKED WITH CRS-I OR CRS-II.
3. THICKNESS OF B25.OB OR B25.0 BASE COURSE AND S9.5B OR S9.5C SURFACE COURSE SHALL MATCH
EXISTING CONDITIONS IF GREATER THAN SHOWN ON DETAILS.
4. CONTRACTOR RESPONSIBLE FOR REPLACEMENT OF ANY PAVEMENT MARKINGS DISTURBED OR COVERED BY OVERLAY.
TYPICAL PAVEMENT REPAIRS - NCDOT ROADS
UPDATED MARCH, 2017
NOT TO SCALE
cq� gEFORFy MOOSE BRANCH SUBIDIVISION SHEET
oGoc NOT TO SCALE WATER LINE
55 Broad Street—j �
Asheville, NC 28801 = 04 98 D . D = DETAILS
828.252.0575 '�2 cP Q o GRAHAM COUNTY RURAL DEVELOPMENT AUTHORITY OFFICE MANAGER DESIGNER C=505
NC Firm License # C-0459 �i�tiF G�NEE�` M. CATHEY PO
//� � n. ��\\\ ��/GGING QP� PROJECT MANAGER REVIEWER DATE PROJECT # FUNDING #
mcgillassociates.comGRAHAM COUNTY, NORTH CAROLINA
NO. DATE BY DESCRIPTION I I M. OETTING B. CATHEY FEBRUARY 2020 15.00341 N/A

TOP OF SLOPE I NATIVE PLANT SEEDING MIX FOR STREAMBANK STABILIZATION
NOTES: NCDEO GENERAL CONSTRUCTION CONDITIONS
FULLY BIODEGRADABLE COIR MATTING
SEEDED WITH NATIVE NC RIPARIAN
SEED MIX.
NORMAL WATER SURFACE
ELEVATION
v
SECTION VIEW
NOTES:
1. ALL DISTURBED STREAM BED AND BANKS TO BE RETURNED TO ORIGINAL CONTOURS AND
ELEVATIONS.
2. DISTURBED STREAM BEDS TO BE BACKFILLED USING ORIGINAL MATERIAL.
3. DISTURBED STREAM BANKS TO BE STABILIZED WITH COIR MATTING AND NATIVE SEEDING.
4. INSTALL FULLY BIODEGRADEABLE COIR MATTING (NO BACKING) ON ALL DISTURBED AREAS
OF CREEK SIDE SLOPES, OVERLAP MATTING MIN. OF 2' TO ADJACENT NON -DISTURBED
AREAS. DO NOT MAT CREEK BOTTOM.
STREAM BANK STABILIZATION
NOT TO SCALE
01=610 2021
FENCE IQ
SILT II I Viol I I EXISTING STREAM
PROPOSED TEMPORARY
PUMP AROUND
X
PROPOSED PIPE
ENERGY
DISSIPATOR
PROPOSED SILT
FENCE
X
E
/ x
X
1�
M
77
WORK AREA
I \
IMPERVIOUS DIKE" -
TO BE INSTALLED
IIN CHANNEL \
x
PROPOSED SILT
FENCE I
X _ X I
x
PUMP I
DEWATERING
DEVICE /
J /
IIMPERVIOUS DIKE
I
PROPOSED SILT
FENCE
SEEDING FOR STREAM OR RIVERBANK STABILIZATION SHALL BE A MIXTURE OF
NATIVE GRASSES, NATIVE WETLAND GRASSES, PLANTS AND TREES. NATIVE
PLANT MIX SHALL INCLUDE THE FOLLOWIING:
GRASSES - BIG BLUESTEM (ANDROPOGAN GERARDII), INDIAN GRASS
(SORGASTRUM NUTANS), LITTLE BLUESTEM
(SCHIZACHYRIUM SCOPARIUM), SWITCHGRASS (PANICUM VIRGATUM).
15 LBS/ACRE EACH
AUGUST THRU MAY - GREENRYE (SECALE CEREALE)
25 LBS/ACRE EACH
MAY 1 THRU AUGUST - MILLET (PENNISETUM GLLAUCUM)
25 LBS/ACRE EACH
WETLAND GRASSES - HOP SEDGE (CAREX LUPULINA), BLUNT BROOM SEDGE
(CAREX SCOPARIA), FOX SEDGE (CAREX VULPINOIDEA), DEERTONGE (PANICUM
CLANDESTINUM), EASTERN BUR REED (SPARGANIUM AMERICANUM), SOFT RUSH
(JUNCUS EFFUSUS).
TREES - SILKY DOGWOOD (CORNUS AMONUM), SILKY WILLOW (SALIX SERICEA),
HAZEL ALDER (ALMUS SERRULATA) AND ELDERBERRY (SAMBUEUS CANADENSIS)
NATIVE PLANT MIX VARIATIONS SHALL BE APPROVED BY ENGINEER
NOTE: NO FERTILIZER SHALL BE USED WITHIN 10' OF TOP OF STREAM OR
RIVER BANK.
MAINTAIN SOIL EROSION CONTROL MEASURES UNTIL PERMANENT GROUND
COVER IS ESTABLISHED.
REQUEST FINAL APPROVAL BY THE NORTH CAROLINA DEPARTMENT OF
ENVIRONMENTAL QUALITY, DIVISION OF ENERGY, MINERAL, AND LAND
RESOURCES, LAND QUALITY SECTION.
:1X►O[eljaWto] I=a606 [e]iKo]IaLZO]=NI YIJ:0��_"911111111001 0-A :31WA=P10000 1101A :0�01
TEMPORARY BYPASS NOTES
1. Install all erosion control measures
as shown on Erosion Control Plan and
in this detail.
2. Construct impervious dike
(recommend sand bags or other easily
removable material) on upstream side
of existing channel and install
temporary bypass pump to divert water
around construction area. All material
must be completely removed following
construction.
3. Construct impervious dike
(recommend sand bags or other easily
removable material) on downstream side
of existing channel to prevent backing
up of stream water into the
construction area.
4. Dewater the construction area using
another temporary pump and discharge
water into a dewatering basin or
sediment bag until sediment has settled
and water can be discharged back into
stream. Dewatering basin must be
outside of any restricted buffer areas,
use wattles instead of earth berm if
reasonable.
5. Begin construction of cross -culvert.
Contractor shall inspect system daily
before beginning any construction. No
construction shall continue if system is
not fully operational.
6. Any wash material removed from
bypass area should be stoned outside
the flood zone or regulated buffer area
until construction is complete.
7. Upon completion of culvert
construction, remove bypass system
within (2) two calendar days.
8. Stabilize all areas disturbed during
construction. Stream bed and banks
must be returned to pre -construction
conditions.
9. Contractor shall receive prior
approval from engineer if choosing to
use another method in lieu of bypass
channel.
PROPOSED
ROADWAY
TEMPORARY STREAM BYPASS
UPDATED MARCH, 2017
NOT TO SCALE
55 Broad Street
MCgi Asheville, NC 28801
828.252.0575
NC Firm License # C-0459
mcgil lassociates.com
SEAL -
041598
F'VG
1 N E�
D.
.• ���\��
THE CONTRACTOR SHALL MINIMIZE CLEARING WITHIN WETLANDS AND ACROSS
STREAMS TO THE GREATEST EXTENT PRACTICABLE AND SHALL NOT EXCEED
50' WIDE FOR GAS UTILITY LINES AND 40' WIDE FOR ALL OTHER UTILITY
LINES. EXCEPTIONS TO THIS CONDITION WILL REQUIRE WRITTEN APPROVAL
FROM THE PROJECT ENGINEER. FOR CONSTRUCTION CORRIDORS IN
WETLANDS AND ACROSS STREAM CHANNELS, STUMPS SHALL BE GRUBBED
ONLY AS NEEDED TO INSTALL THE UTILITY AND REMAINING STUMPS SHALL
BE CUT OFF AT GRADE LEVEL. THE GENERAL STRIPPING OF TOPSOIL WITHIN
WETLANDS ALONG THE CONSTRUCTION CORRIDOR IS NOT PERMITTED.
2. PERMANENT MAINTAINED ACCESS CORRIDORS IN WETLANDS AND ACROSS
STREAM CHANNELS SHALL BE RESTRICTED TO THE MINIMUM WIDTH
PRACTICABLE AND SHALL NOT EXCEED 30' WIDE FOR GAS UTILITY LINES
AND 20' WIDE FOR ALL OTHER UTILITY LINES EXCEPT AT MANHOLE
LOCATIONS. 15' X 15' PERPENDICULAR VEHICLE TURN-AROUNDS ARE
ALLOWED IN ACCESS CORRIDORS BUT MUST BE SPACED AT LEAST 500'
APART. EXCEPTIONS TO THIS CONDITION REQUIRE WRITTEN APPROVAL FROM
THE PROJECT ENGINEER.
3. THE CONTRACTOR SHALL HAVE A SPECIFIC PLAN FOR RESTORING WETLAND
CONTOURS. ANY EXCESS MATERIAL SHALL BE REMOVED TO A HIGH GROUND
DISPOSAL AREA. THE MIXING OF TOPSOIL AND SUBSOILS WITHIN WETLANDS
ALONG UTILITY CORRIDORS SHALL BE MINIMIZED TO THE GREATEST EXTENT
PRACTICABLE DURING EXCAVATION. THE SOILS SHALL BE PLACED ON FABRIC
TO MINIMIZE IMPACTS WHENEVER POSSIBLE. TOPSOIL EXCAVATED FROM
UTILITY TRENCHES SHALL BE PILED SEPARATELY FROM SUBSOILS AND
BACKFILLED INTO THE TRENCH ONLY AFTER THE SUBSOILS HAVE BEEN
PLACED AND COMPACTED.
4. NO WASTE, SPOIL, SOLIDS, OR FILL OF ANY KIND CAN OCCUR IN WETLANDS
OR WATERS BEYOND THE FOOTPRINT OF THE IMPACT AREA (INCLUDING
TEMPORARY IMPACTS) OR BEYOND THE PERMITTED THRESHOLDS WITHOUT
WRITTEN AUTHORIZATION FROM THE PROJECT ENGINEER. NO REMOVAL OF
VEGETATION OR OTHER IMPACTS OF ANY KIND CAN OCCUR TO STATE
REGULATED RIPARIAN BUFFERS BEYOND THE FOOTPRINT OF IMPACTS
APPROVED IN A BUFFER AUTHORIZATION OR VARIANCE OR AS LISTED AS AN
EXEMPT ACTIVITY IN THE APPLICABLE RIPARIAN BUFFER RULES.
5. ALL EROSION CONTROL DEVICES SHALL BE MAINTAINED ON ALL
CONSTRUCTION SITES, BORROW SITES, AND WASTE PILE (SPOIL) SITES,
INCLUDING CONTRACTOR OWNED OR LEASED BORROW PITS ASSOCIATED WITH
THE PROJECT. SUFFICIENT MATERIALS REQUIRED FOR STABILIZATION AND/OR
REPAIR OF EROSION CONTROL MEASURES AND STORMWATER ROUTING AND
TREATMENT SHALL BE ON -SITE AT ALL TIMES.
6. SEDIMENT AND EROSION CONTROL MEASURES SHALL NOT BE PLACED IN
WETLANDS OR WATERS EXCEPT WITHIN THE FOOTPRINT OF TEMPORARY OR
PERMANENT IMPACTS AUTHORIZED UNDER THE PERMITS. EXCEPTIONS TO
THIS CONDITION REQUIRE WRITTEN APPROVAL FROM THE PROJECT ENGINEER.
7. EROSION CONTROL MATTING THAT INCORPORATES PLASTIC MESH AND/OR
PLASTIC TWINE SHALL NOT BE USED ALONG STREAMBANKS OR WITHIN
WETLANDS. EXCEPTIONS TO THIS CONDITION REQUIRE WRITTEN APPROVAL
FROM THE PROJECT ENGINEER.
8. AN NPDES CONSTRUCTION STORMWATER PERMIT (NCGO10000) IS REQUIRED
FOR CONSTRUCTION PROJECTS THAT DISTURB ONE OR MORE ACRES OF
LAND. THE NCO010000 PERMIT ALLOWS STORMWATER TO BE DISCHARGED
DURING LAND DISTURBING CONSTRUCTION ACTIVITIES AS STIPULATED IN THE
CONDITIONS OF THE PERMIT. IF THE PROJECT IS COVERED BY THE PERMITS,
FULL COMPLIANCE WITH PERMIT CONDITIONS INCLUDING THE EROSION AND
SEDIMENTATION CONTROL PLAN, INSPECTIONS AND MAINTENANCE,
SELF -MONITORING, RECORD KEEPING AND REPORTING REQUIREMENTS IS
REQUIRED.
9. ALL WORK IN OR ADJACENT TO STREAMS SHALL BE CONDUCTED SO THAT
THE FLOWING STREAM DOES NOT COME IN CONTACT WITH THE DISTURBED
AREA. APPROVED BEST MANAGEMENT PRACTICES FROM THE MOST CURRENT
VERSION OF THE INC SEDIMENT AND EROSION CONTROL MANUAL, OR THE NC
NOTES: STATEMENT OF PERMIT AND
CONTRACTOR RESPONSIBILITIES
1. PROJECT SITE CONTAINS JURISDICTIOANL WATERS OF
THE U.S (WOTUS).
2. PROJECT INVOLVES IMPACTS TO WOTUS IN SEVERAL
LOCATIONS.
3. PROPOSED IMPACTS TO WOTUS ARE REGULATED BY
THE CLEAN WATER ACT SECTIONS 404 AND 401.
4. PERMITS HAVE BEEN OBTAINED TO AUTHORIZE THE
PROPOSED IMPACTS TO WOTUS AND ARE SUBJECT TO THE
TERMS AND CONDITIONS OF THE PERMITS.
5. CWA 404/401 PERMIT REQUIREMENTS, TERMS, AND
CONDITIONS ARE SUMMARIZED ON THIS SHEET ALONG WITH
VARIOUS ASSOCIATED DETAILS AND
SPECIFICATIONS.
6. A COPY OF THE PERMITS HAVE BEEN PROVIDED TO
THE CONTRACTOR AT THE PRE -CONSTRUCTION MEETING.
THE CONTRACTOR IS RESPONSIBLE FOR READING THE
PERMITS, PLANS AND SPECIFICATIONS, AND
UNDERSTANDING HIS/HER RESPONSIBILITIES UNDER THE
PERMITS, WHICH INCLUDE BUT ARE NOT LIMITED TO:
MOOSE BRANCH SUBIDIVISION
JGRAHAM COUNTY Uk DEVEOPMENT AUTHORITY
�Owcmc< GRAHAM COUNTY, NORTH CAROLINA
NO. DATE BY DESCRIPTION I
DOT CONSTRUCTION AND MAINTENANCE ACTIVITIES MANUAL, SUCH AS
SANDBAGS, ROCK BERMS, COFFERDAMS, AND OTHER DIVERSION STRUCTURES
SHALL BE USED TO MINIMIZE EXCAVATION IN FLOWING WATER. EXCEPTIONS
TO THIS CONDITION REQUIRE WRITTEN APPROVAL FROM THE PROJECT
ENGINEER.
10. CULVERTS SHALL BE INSTALLED IN SUCH A MANNER THAT THE ORIGINAL
STREAM PROFILES ARE NOT ALTERED AND ALLOW FOR AQUATIC LIFE
MOVEMENT DURING LOW FLOWS. THE DIMENSION, PATTERN, AND PROFILE OF
THE STREAM ABOVE AND BELOW A PIPE OR CULVERT SHALL NOT BE
MODIFIED BY WIDENING THE STREAM CHANNEL OR BY REDUCING THE DEPTH
OF THE STREAM IN CONNECTION WITH THE CONSTRUCTION ACTIVITY.
11. APPLICATION OF FERTILIZER TO ESTABLISH PLANTED/SEEDED VEGETATION
WITHIN DISTURBED RIPARIAN AREAS SHALL COMPLY WITH ALL OTHER
FEDERAL, STATE AND LOCAL REGULATIONS. FERTILIZER APPLICATION SHALL
BE ACCOMPLISHED IN A MANNER THAT MINIMIZES THE RISK OF CONTACT
BETWEEN THE FERTILIZER AND SURFACE WATERS.
12. IF CONCRETE IS USED DURING CONSTRUCTION, THEN ALL NECESSARY
MEASURES SHALL BE TAKEN TO PREVENT DIRECT CONTACT BETWEEN
UNCURED OR CURING CONCRETE AND WATERS OF THE US. WATER THAT
INADVERTENTLY CONTACTS UNCURED CONCRETE SHALL NOT BE DISCHARGED
TO WATERS OF THE US.
13. ALL PROPOSED AND APPROVED TEMPORARY FILL AND CULVERTS SHALL BE
REMOVED AND THE IMPACTED AREA RETURNED TO NATURAL CONDITIONS
WITHIN 60 CALENDAR DAYS AFTER THE TEMPORARY IMPACT IS NO LONGER
NECESSARY. THE IMPACTED AREAS SHALL BE RETURNED TO ORIGINAL
GRADE, INCLUDING EACH STREAM'S ORIGINAL CROSS SECTIONAL DIMENSIONS,
PLANFORM PATTERN, AND LONGITUDINAL BED PROFILE. ALL TEMPORARY
IMPACTS SHALL BE RESTORED AND STABILIZED WITH NATIVE VEGETATION.
14. ALL PROPOSED AND APPROVED TEMPORARY PIPES/CULVERTS/RIP-RAP
PADS ETC. IN STREAMS SHALL BE INSTALLED AS OUTLINED IN THE MOST
RECENT EDITION OF THE NC SEDIMENT AND EROSION CONTROL PLANNING
AND DESIGN MANUAL OR THE NCDOT BEST MANAGEMENT PRACTICES FOR
CONSTRUCTION AND MAINTENANCE ACTIVITIES SO AS NOT TO RESTRICT
STREAM FLOW OR CAUSE DIS-EQUILIBRIUM DURING USE OF THIS
CERTIFICATION.
15. ANY RIP -RAP REQUIRED FOR PROPER CULVERT PLACEMENT, STREAM
STABILIZATION, OR RESTORATION OF TEMPORARILY DISTURBED AREAS SHALL
BE RESTRICTED TO THE AREA DIRECTLY IMPACTED BY THE APPROVED
CONSTRUCTION ACTIVITY. ALL RIP -RAP SHALL BE PLACED SUCH THAT THE
ORIGINAL STREAM ELEVATION AND STREAM BANK CONTOURS ARE RESTORED
AND MAINTAINED, NOT RESULT IN THE DE -STABILIZATION OF STREAM BED
OR BANKS UPSTREAM OR DOWNSTREAM OF THE AREA, AND NOT RESTRICT
AQUATIC LIFE PASSAGE.
16. ANY RIP -RAP USED FOR STREAM OR SHORELINE STABILIZATION SHALL BE
OF SIZE AND DENSITY TO PREVENT MOVEMENT BY WAVE, CURRENT, OR
STREAM FLOWS, AND WILL CONSIST OF CLEAN ROCK OR MASONRY MATERIAL.
RIP -RAP SHALL NOT BE INSTALLED IN THE STREAMBED EXCEPT IN SPECIFIC
AREAS REQUIRED FOR VELOCITY CONTROL AND TO ENSURE STRUCTURAL
INTEGRITY OF BANK STABILIZATION MEASURES.
17. ALL MECHANIZED EQUIPMENT OPERATED NEAR SURFACE WATERS SHALL BE
INSPECTED, FUELED, LUBRICATED, AND MAINTAINED REGULARLY AND
MAINTENANCE PERFORMED IN A MANNER TO PREVENT CONTAMINATION OF
STREAM WATER FROM FUELS, LUBRICANTS, HYDRAULIC FLUIDS, OR OTHER
TOXIC MATERIALS.
18. HEAVY EQUIPMENT WORKING IN WETLANDS SHALL BE PLACED ON MATS OR
OTHER MEASURES TAKEN TO MINIMIZE SOIL DISTURBANCE.
19. THE CONTRACTOR OR OTHER RESPONSIBLE ENTITY SHALL REPORT ANY
PETROLEUM SPILL OF 25 GALLONS OR MORE; ANY SPILL REGARDLESS OF
AMOUNT THAT CAUSES A SHEEN ON SURFACE WATERS; ANY PETROLEUM
SPILL REGARDLESS OF SIZE THAT OCCURS WITHIN 100-FEET OF SURFACE
WATER; AND ANY PETROLEUM SPILL LESS THAN 25 GALLONS THAT CANNOT
BE CLEANED UP WITHIN 24 HOURS.
A) COMPLIANCE WITH ALL PERMIT CONDITIONS RELATING
TO CONTRACTED CONSTRUCTION ACTIVITIES BOTH
ON -SITE AND OFF -SITE, IF OFF -SITE AREAS ARE
USED FOR PROJECT RELATED PURPOSES (EG:
ACCESS, LAYDOWN, STAGING, BORROW, WASTE, ETC.)
B) CONTRACTOR SHALL NOTIFY PROJECT ENGINEER OF
ANY STAGING AREAS, STOCKPILE AREAS, ACCESS
ROUTES NOT SHOWN ON CONSTRUCTION PLANS PRIOR
TO ANY DISTURBANCE IN THOSE AREAS.
C) COMMUNICATION OF PERMIT COMPLIANCE
RESPONSIBILITIES TO SUBCONTRACTORS WORKING ON
THE PROJECT.
D) COORDINATION WITH PROJECT ENGINEER REGARDING
PERMIT COMPLIANCE RELATED ISSUES AND
QUESTIONS.
E) IMMEDIATE REPORTING TO PROJECT ENGINEER OR
OWNER OF ANY VIOLATION OR SUSPECTED VIOLATION
OF PERMIT CONDITIONS.
F) A COPY OF ALL PERMITS AND CONDITIONS SHOULD
BE MADE AVAILABLE AT THE PROJECT SITE DURING
CONSTRUCTION AND MAINTENANCE ACTIVITIES.
NOT TO SCALE
OFFICE MANAGER
M. CATHEY
PROJECT MANAGER
M. OETTING
DESIGNER
CDB
REVIEWER
B. CATHEY
STREAM IMPACT NOTES
AND DETAILS
DATE PROJECT # FUNDING #
FEBRUARY 2020 15.00341 N/A
SHEET
C=506

Strickland, Bev
From: Annino, Amy M <[e-mail]>
Sent: Friday, March 20, 2020 10:15 AM
To: Jon Swaim; Jonathan Herman
Cc: Leslie, Andrea J
Subject: Additional Information Request - Moose Branch Subdivision - DWR 2020-0121
Attachments: GC4139.pdf
The Division of Water Resources (Division) has performed a preliminary review of a 401 Water Quality Certification
application submitted for the above referenced project dated January 20, 2020, and received on January 20, 2020, with
the appropriate fee received on January 23, 2020. The Division has determined that your application is incomplete and
cannot be processed. The application is on -hold until all of the following information is received:
Please provide more details regarding avoidance and minimization of the shared driveway impacts for this
project. [15A NCAC 02H .0506(f) and (g)]
o This Office believes that the proposed stream and wetland impacts for the 46 LF 36" culvert to
accommodate the shared drive can be moved or reconfigured to avoid the impacts to the UT to Mauney
Branch and adjacent wetlands. Please revise the plans to avoid the impacts or provide a detailed
explanation of why this plan for the activity cannot be practically accomplished, reduced or reconfigured
to avoid impacts to the UT to Mauney Branch and adjacent wetlands.
Condition I. b. of GC 4139 (attached) requires that the project not cause degradation of downstream surface
waters. Please provide calculations to document this. Documentation shall include a detailed analysis of the
hydrological impacts from stormwater runoff when considering the volume and velocity of stormwater runoff
from the project built upon area and the size and existing condition of the receiving stream(s).
The plan set does not specify that culvert burial be 20% of culvert diameter. Please include the appropriate 20%
culvert burial depth for proposed culvert(s) on the plan set.
Please provide descriptive information regarding the proposed temporary stream impacts upstream and
downstream of both culverts.
Pursuant to Title 15A NCAC 02H .0502, the applicant shall furnish all of the above requested information for the proper
consideration of the application. If all of the requested information is not received within 30 calendar days of receipt of
this email, the DWR will be unable to approve the application and it will be returned. The return of this project will
necessitate reapplication to the DWR for approval, including a complete application package and the appropriate fee.
Amy Annino
Environmental Specialist —Asheville Regional Office
Water Quality Regional Operations Section
NCDEQ — Division of Water Resources
828 296 4656 office
984 232 1222 mobile
amy.anninoa-ncdenr.gov
2090 U.S. Hwy. 70
Swannanoa, N.C. 28711

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
WATER QUALITY GENERAL CERTIFICATION NO.4139
GENERAL CERTIFICATION FOR PROJECTS ELIGIBLE FOR US ARMY CORPS OF ENGINEERS
• NATIONWIDE PERMIT NUMBER 18 (MINOR DISCHARGES),
• NATIONWIDE PERMIT NUMBER 29 (RESIDENTIAL DEVELOPMENT),
• NATIONWIDE PERMIT NUMBER 39 (COMMERCIAL AND INSTITUTIONAL
DEVELOPMENTS),
• NATIONWIDE PERMIT NUMBER 40 (AGRICULTURAL ACTIVITIES),
• NATIONWIDE PERMIT NUMBER 41(RESHAPING EXISTING DRAINAGE DITCHES),
• NATIONWIDE PERMIT NUMBER 42 (RECREATIONAL FACILITIES),
• NATIONWIDE PERMIT NUMBER 44 (MINING ACTIVITIES),
• NATIONWIDE PERMIT NUMBER 46 (DISCHARGES IN DITCHES),
• NATIONWIDE PERMIT NUMBER 51(LAND BASED RENEWABLE ENERGY GENERATION
FACILITIES), AND
• NATIONWIDE PERMIT NUMBER 52 (WATER BASED RENEWABLE ENERGY GENERATION
PILOT PROJECTS).
Water Quality Certification Number 4139 is issued in conformity with the requirements of
Section 401, Public Laws 92-500 and 95-217 of the United States and subject to the North
Carolina Regulations in 15A NCAC 02H .0500 and 15A NCAC 02B .0200 for the discharge of fill
material to surface waters and wetland areas as described in 33 CFR 330 Appendix A (B) (18, 29,
39, 40, 41, 42, 44, 46, 51 and 52) of the US Army Corps of Engineers regulations.
The State of North Carolina certifies that the specified category of activity will not violate
applicable portions of Sections 301, 302, 303, 306 and 307 of the Public Laws 92-500 and 95-
217 if conducted in accordance with the conditions hereinafter set forth.
Effective date: December 1, 2017
Signed this day: December 1, 2017
By
for Linda Culpepper
Interim Director

GC4139
Activities meeting any one (1) of the following thresholds or circumstances require written
approval for a 401 Water Quality Certification from the Division of Water Resources (DWR):
a) If any of the conditions of this Certification (listed below) cannot be met; or
b) Any impacts to streams from excavation or dredging other than excavation that is
conducted as preparation for installing permanent fill or structures; or
c) Total temporary and permanent impacts to streams greater than 150 feet; or
d) Any stream relocation or stream restoration; or
e) Complete dewatering and drawdowns to a sediment layer related to pond/dam
maintenance or removal; or
f) Total temporary and permanent impacts to wetlands or open waters equal to or greater
than one -tenth (1/10) acre; or
g) Any high -density project, as defined in 15A NCAC 02H .1003(2)(a) and by the density
thresholds specified in 15A NCAC 02H .1017, which:
L Disturbs one acre or more of land (including a project that disturbs less than one
acre of land that is part of a larger common plan of development or sale); and
ii. Has permanent wetland, stream or open water impacts; and
iii. Is proposing new built -upon area; and
iv. Does not have a stormwater management plan reviewed and approved under a
state stormwater program' or a state -approved local government stormwater
program2.
Projects that have vested rights, exemptions, or grandfathering from state or locally -
implemented stormwater programs and projects that satisfy state or locally -
implemented stormwater programs through use of community in -lieu programs require
written approval.; or
h) Any permanent impacts to waters, or to wetlands adjacent to waters, designated as:
ORW (including SAV), HQW (including PNA), SA, WS-I, WS-II, Trout, or North Carolina or
National Wild and Scenic River; or
i) Any permanent impacts to coastal wetlands [15A NCAC 07H .0205], or Unique Wetlands
(UWL) [15A NCAC 02H .0506]; or
j) Any impact associated with a Notice of Violation or an enforcement action for
violation(s) of NC Wetland Rules (15A NCAC 02H .0500), NC Isolated Wetland Rules (15A
NCAC 02H .1300), NC Surface Water or Wetland Standards (15A NCAC 02B .0200), or
State Regulated Riparian Buffer Rules (15A NCAC 02B .0200); or
k) Any impacts to subject water bodies and/or state regulated riparian buffers along
subject water bodies in the Neuse, Tar -Pamlico, or Catawba River Basins or in the
Randleman Lake, Jordan Lake or Goose Creek Watersheds (or any other basin or
watershed with State Regulated Riparian Area Protection Rules [Buffer Rules] in effect
at the time of application) unless:
L The activities are listed as "EXEMPT" from these rules; or
1 e.g. Coastal Counties, HQW, ORW, or state -implemented Phase II NPDES
2 e.g. Delegated Phase II NPDES, Water Supply Watershed, Nutrient -Sensitive Waters, or Universal Stormwater
Management Program
Page 2 of 11

GC4139
ii. A Buffer Authorization Certificate is issued by the NC Division of Coastal
Management (DCM); or
iii. A Buffer Authorization Certificate or a Minor Variance is issued by a delegated or
designated local government implementing a state riparian buffer program
pursuant to 143-215.23.
Activities included in this General Certification that do not meet one of the thresholds listed
above do not require written approval.
I. ACTIVITY SPECIFIC CONDITIONS:
1. If this Water Quality Certification is used to access residential, commercial or industrial
building sites, then all parcels owned by the applicant that are part of the single and
complete project authorized by this Certification must be buildable without additional
impacts to streams or wetlands. If required in writing by DWR, the applicant shall provide
evidence that the parcels are buildable without requiring additional impacts to wetlands,
waters, or state regulated riparian buffers. [15A NCAC 02H .0506(b)(4) and (c)(4)]
2. For road construction purposes, this Certification shall only be utilized from natural high
ground to natural high ground. [15A NCAC 02H .0506(b)(2) and (c)(2)]
3. Deed notifications or similar mechanisms shall be placed on all lots with retained
jurisdictional wetlands, waters, and state regulated riparian buffers within the project
boundaries in order to assure compliance with NC Wetland Rules (15A NCAC 02H .0500), NC
Isolated Wetland Rules (15A NCAC 02H .1300), and/or State Regulated Riparian Buffer Rules
(15A NCAC 02B .0200). These mechanisms shall be put in place at the time of recording of
the property or individual parcels, whichever is appropriate. [15A NCAC 02H .0506(b)(4)
and (c)(4)]
4. For all dam removal projects meeting the definition under G.S. 143-215.25 and
requirements under G.S. 143-215.27 of a professionally supervised dam removal, the
applicant shall provide documentation that any sediment that may be released has similar
or lower level of contamination than sediment sampled from downstream of the dam in
accordance with Session Law 2017-145.
5. For the North Carolina Department of Transportation, compliance with the NCDOT's
individual NPDES permit NCS000250 shall serve to satisfy this condition. All other high -
density projects that trigger threshold Item (g) above shall comply with one of the following
requirements: [15A NCAC 02H .0506(b)(5) and (c)(5)]
Page 3 of 11

GC4139
a. Provide a completed Stormwater Management Plan (SMP) for review and approval,
including all appropriate stormwater control meAsure (SCM) supplemental forms and
associated items, that complies with the high -density development requirements of 15A
NCAC 02H .1003. Stormwater management shall be provided throughout the entire
project area in accordance with 15A NCAC 02H .1003. For the purposes of 15A NCAC
02H .1003(2)(a), density thresholds shall be determined in accordance with 15A NCAC
02H .1017.
b. Provide calculations to document that the project will not cause degradation of
downstream surface waters. Documentation shall include a detailed analysis of the
hydrological impacts from stormwater runoff when considering the volume and velocity
of stormwater runoff from the project built upon area and the size and existing
condition of the receiving stream(s).
Exceptions to this condition require application to and written approval from DWR.
II. GENERAL CONDITIONS:
1. When written authorization is required, the plans and specifications for the project are
incorporated into the authorization by reference and are an enforceable part of the
Certification. Any modifications to the project require notification to DWR and may require
an application submittal to DWR with the appropriate fee. [15A NCAC 02H .0501 and .0502]
2. No waste, spoil, solids, or fill of any kind shall occur in wetlands or waters beyond the
footprint of the impacts (including temporary impacts) as authorized in the written approval
from DWR; or beyond the thresholds established for use of this Certification without
written authorization. [15A NCAC 02H .0501 and .0502]
No removal of vegetation or other impacts of any kind shall occur to state regulated riparian
buffers beyond the footprint of impacts approved in a Buffer Authorization or Variance or
as listed as an exempt activity in the applicable riparian buffer rules. [15A NCAC 02B .0200]
3. In accordance with 15A NCAC 02H .0506(h) and Session Law 2017-10, compensatory
mitigation may be required for losses of greater than 300 linear feet of perennial streams
and/or greater than one (1) acre of wetlands. Impacts associated with the removal of a
dam shall not require mitigation when the removal complies with the requirements of Part
3 of Article 21 in Chapter 143 of the North Carolina General Statutes. Impacts to isolated
and other non-404 jurisdictional wetlands shall not be combined with 404 jurisdictional
wetlands for the purpose of determining when impact thresholds trigger a mitigation
requirement. For linear publicly owned and maintained transportation projects that are not
determined to be part of a larger common plan of development by the US Army Corps of
Engineers, compensatory mitigation may be required for losses of greater than 300 linear
feet per perennial stream.
Page 4 of 11

GC4139
Compensatory stream and/or wetland mitigation shall be proposed and completed in
compliance with G.S. 143-214.11. For applicants proposing to conduct mitigation within a
project site, a complete mitigation proposal developed in accordance with the most recent
guidance issued by the US Army Corps of Engineers Wilmington District shall be submitted
for review and approval with the application for impacts.
4. All activities shall be in compliance with any applicable State Regulated Riparian Buffer
Rules in Chapter 2 of Title 15A.
5. When applicable, all construction activities shall be performed and maintained in full
compliance with G.S. Chapter 113A Article 4 (Sediment and Pollution Control Act of 1973).
Regardless of applicability of the Sediment and Pollution Control Act, all projects shall
incorporate appropriate Best Management Practices for the control of sediment and
erosion so that no violations of state water quality standards, statutes, or rules occur. [15A
NCAC 02H .0506 (b)(3) and (c)(3) and 15A NCAC 026.0200]
Design, installation, operation, and maintenance of all sediment and erosion control
measures shall be equal to or exceed the requirements specified in the most recent version
of the North Carolina Sediment and Erosion Control Manual, or for linear transportation
projects, the NCDOT Sediment and Erosion Control Manual.
All devices shall be maintained on all construction sites, borrow sites, and waste pile (spoil)
sites, including contractor -owned or leased borrow pits associated with the project.
Sufficient materials required for stabilization and/or repair of erosion control measures and
stormwater routing and treatment shall be on site at all times.
For borrow pit sites, the erosion and sediment control measures shall be designed,
installed, operated, and maintained in accordance with the most recent version of the
North Carolina Surface Mining Manual. Reclamation measures and implementation shall
comply with the reclamation in accordance with the requirements of the Sedimentation
Pollution Control Act and the Mining Act of 1971.
If the project occurs in waters or watersheds classified as Primary Nursery Areas (PNAs), SA,
WS-I, WS-II, High Quality Waters (HQW), or Outstanding Resource Waters (ORW), then the
sedimentation and erosion control designs shall comply with the requirements set forth in
15A NCAC 046 .0124, Design Standards in Sensitive Watersheds.
6. Sediment and erosion control measures shall not be placed in wetlands or waters except
within the footprint of temporary or permanent impacts authorized under this Certification.
Exceptions to this condition require application to and written approval from DWR. [15A
NCAC 02H .0501 and .0502]
7. Erosion control matting that incorporates plastic mesh and/or plastic twine shall not be
used along streambanks or within wetlands. Exceptions to this condition require
application to and written approval from DWR. [15A NCAC 02B .0201]
Page 5 of 11

GC4139
8. An NPDES Construction Stormwater Permit (NCG010000) is required for construction
projects that disturb one (1) or more acres of land. The NCG010000 Permit allows
stormwater to be discharged during land disturbing construction activities as stipulated in
the conditions of the permit. If the project is covered by this permit, full compliance with
permit conditions including the erosion & sedimentation control plan, inspections and
maintenance, self -monitoring, record keeping and reporting requirements is required. [15A
NCAC 02H .0506(b)(5) and (c)(5)]
The North Carolina Department of Transportation (NCDOT) shall be required to be in full
compliance with the conditions related to construction activities within the most recent
version of their individual NPDES (NCS000250) stormwater permit. [15A NCAC 02H
.0506(b)(5) and (c)(5)]
9. All work in or adjacent to streams shall be conducted so that the flowing stream does not
come in contact with the disturbed area. Approved best management practices from the
most current version of the NC Sediment and Erosion Control Manual, or the NC DOT
Construction and Maintenance Activities Manual, such as sandbags, rock berms,
cofferdams, and other diversion structures shall be used to minimize excavation in flowing
water. Exceptions to this condition require application to and written approval from DWR.
[15A NCAC 02H .0506(b)(3) and (c)(3)]
10. If activities must occur during periods of high biological activity (e.g. sea turtle nesting, fish
spawning, or bird nesting), then biological monitoring may be required at the request of
other state or federal agencies and coordinated with these activities. [15A NCAC 02H
.0506(b)(2) and 15A NCAC 04B .0125]
All moratoriums on construction activities established by the NC Wildlife Resources
Commission (WRC), US Fish and Wildlife Service (USFWS), NC Division of Marine Fisheries
(DMF), or National Marine Fisheries Service (NMFS) shall be implemented. Exceptions to
this condition require written approval by the resource agency responsible for the given
moratorium. A copy of the approval from the resource agency shall be forwarded to DWR.
Work within a designated trout watershed of North Carolina (as identified by the
Wilmington District of the US Army Corps of Engineers), or identified state or federal
endangered or threatened species habitat, shall be coordinated with the appropriate WRC,
USFWS, NMFS, and/or DMF personnel.
11. Culverts shall be designed and installed in such a manner that the original stream profiles
are not altered and allow for aquatic life movement during low flows. The dimension,
pattern, and profile of the stream above and below a pipe or culvert shall not be modified
by widening the stream channel or by reducing the depth of the stream in connection with
the construction activity. The width, height, and gradient of a proposed culvert shall be
such as to pass the average historical low flow and spring flow without adversely altering
flow velocity. [15A NCAC 02H .0506(b)(2) and (c)(2)]
Page 6 of 11

GC4139
Placement of culverts and other structures in streams shall be below the elevation of the
streambed by one foot for all culverts with a diameter greater than 48 inches, and 20% of
the culvert diameter for culverts having a diameter less than or equal to 48 inches, to allow
low flow passage of water and aquatic life.
If multiple pipes or barrels are required, they shall be designed to mimic the existing stream
cross section as closely as possible including pipes or barrels at flood plain elevation and/or
sills where appropriate. Widening the stream channel shall be avoided.
When topographic constraints indicate culvert slopes of greater than 5%, culvert burial is
not required, provided that all alternative options for flattening the slope have been
investigated and aquatic life movement/connectivity has been provided when possible (e.g.
rock ladders, cross vanes, etc.). Notification, including supporting documentation to include
a location map of the culvert, culvert profile drawings, and slope calculations, shall be
provided to DWR 60 calendar days prior to the installation of the culvert.
When bedrock is present in culvert locations, culvert burial is not required provided that
there is sufficient documentation of the presence of bedrock. Notification, including
supporting documentation such as, a location map of the culvert, geotechnical reports,
photographs, etc. shall be provided to DWR a minimum of 60 calendar days prior to the
installation of the culvert. If bedrock is discovered during construction, then DWR shall be
notified by phone or email within 24 hours of discovery.
If other site -specific topographic constraints preclude the ability to bury the culverts as
described above and/or it can be demonstrated that burying the culvert would result in
destabilization of the channel, then exceptions to this condition require application to and
written approval from DWR.
Installation of culverts in wetlands shall ensure continuity of water movement and be
designed to adequately accommodate high water or flood conditions. When roadways,
causeways, or other fill projects are constructed across FEMA-designated floodways or
wetlands, openings such as culverts or bridges shall be provided to maintain the natural
hydrology of the system as well as prevent constriction of the floodway that may result in
destabilization of streams or wetlands.
The establishment of native woody vegetation and other soft stream bank stabilization
techniques shall be used where practicable instead of rip -rap or other bank hardening
methods.
12. Bridge deck drains shall not discharge directly into the stream. Stormwater shall be
directed across the bridge and pre-treated through site -appropriate means to the maximum
extent practicable (e.g. grassed swales, pre -formed scour holes, vegetated buffers, etc.)
before entering the stream. -Exceptions to this condition require application to and written
approval from DWR. [15A NCAC 02H .0506(b)(5)]
Page 7 of 11

GC4139
13. Application of fertilizer to establish planted/seeded vegetation within disturbed riparian
areas and/or wetlands shall be conducted at agronomic rates and shall comply with all
other Federal, State and Local regulations. Fertilizer application shall be accomplished in a
manner that minimizes the risk of contact between the fertilizer and surface waters. [15A
NCAC 02B .0200 and 15A NCAC 026 .0231]
14. If concrete is used during construction, then all necessary measures shall be taken to
prevent direct contact between uncured or curing concrete and waters of the state. Water
that inadvertently contacts uncured concrete shall not be discharged to waters of the state.
[15A NCAC 02B .0200]
15. All proposed and approved temporary fill and culverts shall be removed and the impacted
area shall be returned to natural conditions within 60 calendar days after the temporary
impact is no longer necessary. The impacted areas shall be restored to original grade,
including each stream's original cross sectional dimensions, planform pattern, and
longitudinal bed profile. For projects that receive written approval, no temporary impacts
are allowed beyond those included in the application and authorization. All temporarily
impacted sites shall be restored and stabilized with native vegetation. [15A NCAC 02H
.0506(b)(2) and (c)(2)]
16. All proposed and approved temporary pipes/culverts/rip-rap pads etc. in streams shall be
installed as outlined in the most recent edition of the North Carolina Sediment and Erosion
Control Planning and Design Manual or the North Carolina Surface Mining Manual or the
North Carolina Department of Transportation Best Management Practices for Construction
and Maintenance Activities so as not to restrict stream flow or cause dis-equilibrium during
use of this Certification. [15A NCAC 02H .0506(b)(2) and (c)(2)]
17. Any rip -rap required for proper culvert placement, stream stabilization, or restoration of
temporarily disturbed areas shall be restricted to the area directly impacted by the
approved construction activity. All rip -rap shall be placed such that the original stream
elevation and streambank contours are restored and maintained. Placement of rip -rap or
other approved materials shall not result in de -stabilization of the stream bed or banks
upstream or downstream of the area or in a manner that precludes aquatic life passage.
[15A NCAC 02H .0506(b)(2)]
18. Any rip -rap used for stream or shoreline stabilization shall be of a size and density to
prevent movement by wave, current action, or stream flows and shall consist of clean rock
or masonry material free of debris or toxic pollutants. Rip -rap shall not be installed in the
streambed except in specific areas required for velocity control and to ensure structural
integrity of bank stabilization measures. [15A NCAC 02H .0506(b)(2)]
19. Applications for rip -rap groins proposed in accordance with 15A NCAC 07H .1401 (NC
Division of Coastal Management General Permit for construction of Wooden and Rip -rap
Groins in Estuarine and Public Trust Waters) shall meet all the specific conditions for design
and construction specified in 15A NCAC 07H .1405.
Page 8 of 11

GC4139
20. 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. [15A NCAC
02H .0506(b)(3) and (c)(3) and 15A NCAC 02B .0211(12)]
21. Heavy equipment working in wetlands shall be placed on mats or other measures shall be
taken to minimize soil disturbance. [15A NCAC 02H .0506(b)(3) and (c)(3)]
22. In accordance with 143-215.85(b), the applicant shall report any petroleum spill of 25
gallons or more; any spill regardless of amount that causes a sheen on surface waters; any
petroleum spill regardless of amount occurring within 100 feet of surface waters; and any
petroleum spill less than 25 gallons that cannot be cleaned up within 24 hours.
23. If an environmental document is required under the State Environmental Policy Act (SEPA),
then this General Certification is not valid until a Finding of No Significant Impact (FONSI) or
Record of Decision (ROD) is issued by the State Clearinghouse. If an environmental
document is required under the National Environmental Policy Act (NEPA), then this
General Certification is not valid until a Categorical Exclusion, the Final Environmental
Assessment, or Final Environmental Impact Statement is published by the lead agency [15A
NCAC 01C .0107(a)]
24. This General Certification does not relieve the applicant of the responsibility to obtain all
other required Federal, State, or Local approvals before proceeding with the project,
including those required by, but not limited to Sediment and Erosion Control, Non -
Discharge, Water Supply Watershed, and Trout Buffer regulations.
25. The applicant and their authorized agents shall conduct all activities in a manner consistent
with State water quality standards (including any requirements resulting from compliance
with §303(d) of the Clean Water Act), and any other appropriate requirements of State and
Federal Law. If DWR determines that such standards or laws are not being met, including
failure to sustain a designated or achieved use, or that State or Federal law is being violated,
or that further conditions are necessary to assure compliance, then DWR may revoke or
modify a written authorization associated with this General Water Quality Certification.
[15A NCAC 02H .0507(d)]
26. The permittee shall require its contractors and/or agents to comply with the terms and
conditions of this permit in the construction and maintenance of this project, and shall
provide each of its contractors and/or agents associated with the construction or
maintenance of this project with a copy of this Certification. A copy of this Certification,
including all conditions shall be available at the project site during the construction and
maintenance of this project. [15A NCAC 02H .0507 (c) and 15A NCAC 02H .0506 (b)(2) and
(c)(2)]
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27. When written authorization is required for use of this Certification, upon completion of all
permitted impacts included within the approval and any subsequent modifications, the
applicant shall be required to return a certificate of completion (available on the DWR
website https://edocs.deg.nc.gov/Forms/Certificate-of-Completion). [15A NCAC 02H
.0502(f)]
28. Additional site -specific conditions, including monitoring and/or modeling requirements,
may be added to the written approval letter for projects proposed under this Water Quality
Certification in order to ensure compliance with all applicable water quality and effluent
standards. [15A NCAC 02H .0507(c)]
29. If the property or project is sold or transferred, the new permittee shall be given a copy of
this Certification (and written authorization if applicable) and is responsible for complying
with all conditions. [15A NCAC 02H .0501 and .0502]
GENERAL CERTIFICATION ADMINISTRATION:
1. In accordance with North Carolina General Statute 143-215.3D(e), written approval for a
401 Water Quality General Certification must include the appropriate fee. An applicant for
a CAMA permit under Article 7 of Chapter 113A of the General Statutes for which a Water
Quality Certification is required shall only make one payment to satisfy both agencies; the
fee shall be as established by the Secretary in accordance with 143-215.3D(e)(7).
2. This Certification neither grants nor affirms any property right, license, or privilege in any
waters, or any right of use in any waters. This Certification does not authorize any person
to interfere with the riparian rights, littoral rights, or water use rights of any other person
and this Certification does not create any prescriptive right or any right of priority regarding
any usage of water. This Certification shall not be interposed as a defense in any action
respecting the determination of riparian or littoral rights or other rights to water use. No
consumptive user is deemed by virtue of this Certification to possess any prescriptive or
other right of priority with respect to any other consumptive user regardless of the quantity
of the withdrawal or the date on which the withdrawal was initiated or expanded.
3. This Certification grants permission to the Director, an authorized representative of the
Director, or DWR staff, upon the presentation of proper credentials, to enter the property
during normal business hours. [15A NCAC 02H .0502(e)]
4. This General Certification shall expire on the same day as the expiration date of the
corresponding Nationwide Permit and/or Regional General Permit. The conditions in effect
on the date of issuance of Certification for a specific project shall remain in effect for the life
of the project, regardless of the expiration date of this Certification. This General
Certification is rescinded when the US Army Corps of Engineers reauthorizes any of the
corresponding Nationwide Permits and/or Regional General Permits or when deemed
appropriate by the Director of the Division of Water Resources.
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5. Non-compliance with or violation of the conditions herein set forth by a specific project may
result in revocation of this General Certification for the project and may also result in
criminal and/or civil penalties.
6. The Director of the North Carolina Division of Water Resources may require submission of a
formal application for Individual Certification for any project in this category of activity if it
is deemed in the public's best interest or determined that the project is likely to have a
significant adverse effect upon water quality, including state or federally listed endangered
or threatened aquatic species, or degrade the waters so that existing uses of the water or
downstream waters are precluded.
History Note: Water Quality Certification (WQC) Number 4139 issued December 1, 2017
replaces WQC 4092 issued March 3, 2017; WQC 3890 issued March 19, 2012; replaces WQC
Number 3821 issued April 6, 2010; WQC Number 3631 issued March 19, 2007; WQC 3402 issued
March 28, 2003; WQC Number 3362, issued March 18, 2002; WQC 3287, issued June 1, 2000;
WQCs 3106 and 3108 issued February 11, 1997.
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