20220896 Ver 1_More Info Received_20220912

EAGLE ENGINEERING
September 7, 2022
NCDWR
RE: Long Creek Village — Winston-Salem, NC
DWR # 20220896
We are in receipt of your review comments for the construction documents associated with Long Creek
Village, located on Mizpah Church Rd in Winston Salem, NC. Please find below responses to the
requested information.
NCDWR COMMENTS
Contact: Sue Homewood
1) Please clarify if NCDOT or a local government will be assuming responsibility for the proposed
roads. If either entity will be assuming future maintenance of the roads, please provide
confirmation that they have reviewed the bottomless culvert design and will accept the roadway as
designed.
—> The City of Winston-Salem will own and maintain the internal subdivision streets.
Documentation is provided with this letter that shows Winston-Salem will accept the BridgeCor
product if it meets NCDOT standards.
—> NCDOT is currently reviewing the BridgeCor product to ensure it meets their standards;
documentation will be provided as soon as it is available.
2) Based on the Divisions previous experience with these structures, the shading that will occur under
the proposed bottomless culvert will lead to the die -off of woody vegetation which provides the
structure that keeps the stream banks intact. Erosion of stream banks then occurs leading to
sediment loading in the stream, over -widening of the channel, and reductions in habitat
heterogeneity will subsequently occur. Such reductions in stream function are considered as
indirect impacts / losses of existing uses of the stream channel, and therefore justify compensatory
mitigation pursuant to 15A NCAC 02H .0506(c). Please provide a stream mitigation plan for the
total perennial stream losses from both direct and indirect impacts within the entire proposed
project.
—> While the total impacts for the project exceed 300 LF, the two culvert impacts only total 289 LF.
The remaining impacts include riprap that will be installed flush with the existing stream
channel temporary coffer dams used for installation. As noted in the response to comment #3,
the riprap apron for the bottomless arch culvert has been shifted under the arch for stability.
There is no anticipated functional loss of stream channel and the total impacts of the two
culverts is less than 300 LF, therefore no stream mitigation shall be required.
www.eagleonline.net
2013-A Van Buren Avenue
Indian Trail, NC 28079
Ph 704 882 4222
Fax [phone]

3) Please explain why a riprap apron is required in the stream downstream of the bottomless culvert.
This would indicate that the culvert is expected to increase the velocity within the stream channel.
As noted above, any functional loss to the stream channel as a result of installation of the
bottomless culvert would be considered to be indirect and cumulative impacts and should be
accounted as such in the application.
- The riprap apron placed downstream of the bottomless culvert has been moved underneath
the culvert arch for stability. The apron will be installed flush with the existing grade and will
not result in functional loss of stream channel. There is no expected increase in velocity within
the stream.
4) Please explain why Culvert #2 is not proposed to be buried within the stream channel.
- Culvert #2 has been revised to a 72" pipe buried 1' below existing channel grade.
5) It appears that Wetland Impacts #3 and #4 could be completely avoided with a minor adjustment
to the plans to shorten the road and remove lots 41 and 42, or to use retaining walls to minimize
the fill to these areas. Given the total number of lots proposed for this development, please
provide justification as to why the loss of only 2 lots is not practical.
- The cul-de-sac has been shortened; two lots were removed & the grading was revised to
eliminate the impacts to the two wetland areas (previously designated W-3 & W-4). The total
wetland impact has been reduced from 0.484 acres to 0.244 acres.
As you have any questions, please do not hesitate to contact our office.
Sincerely,
Eagle Engineering Inc.
/RAA/Lexv Tito rn cq5
Lauren Thomas, PE
Senior Project Manager
www.eagleonline.net
2013-A Van Buren Avenue
Indian Trail, NC 28079
Ph 704 882 4222
Fax [phone]

I
MUDDY CREEK
\ \\
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z WL:53
4 s
7i,156SF
FEMA FLOOD WAY LIMITS
FEMA 100-YR FLOODLINE
FEMA 500-YR FLOODLINE
WL:46
287SF �\
WL:50
1,019 SF
WL:54
363 SF
WL:58
70 SF
WL:32
350 SF
r
WL:35
180 Sq
168
167*
166*
165*
164"
WL:39
165 SF
170
EX. PROPERTY LINE
172
173
174
292 291
EX. WETLANDS
-
176
177
PROP.
SCM
\(\
WL:59
N6 SF
242"
187*
188*
212
245*
246*
•
• PROP.
• SCM
•
•
•
- 29,520SF------
248*
206
20i"
249*
SHEET W-1.3 ■
PROP.
SCM
252"
253*
WL:33 .
.14,760 ..
SHEET W-1.1
129
128**
126"*
-
MIZPAH CHURCH RD.
PROP.
SCM
25
\
PROP. BOTTOMLESS ARCH \
CULVERT W/ HEADWALLS \
— WL: 3
I
1,115
-` S
- —
\ 23
24
TRIBUTARIES OF
MUDDY CREEK
PROP.
SCM
SHEET W-1.2
S-5 trip
t‘Ah.
S-6
PROP. TRADITIONAL
72" CAP CULVERT W/ HEADWALLS
��... \I119I
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STREAM BUFFERS
MEASURED FROM
TOP OF BANK
WL:44
,355 S
- -
BOTTOMLESS ARCH CULVERT & HEADWALLS:
(W-1A & W-18) WETLANDS IMPACTED = 6,829 SF (0.157 AC)
S-1 = 87 LF (348 SF, INCLUDES 15 LF CLASS 1 RIPRAP
INSTALLED FLUSH UNDERNEATH BAC)
S-2 = 5 LF (20 SF) DOWNSTREAM TEMP. COFFER DAM
S-3 = 20 LF (80 SF) UPSTREAM TEMP. COFFER DAM
TOTAL = 112 LF (448 SF = 0.010 AC)
TRADITIONAL PIPED CULVERT & HEADWALLS:
(W-2) WETLANDS IMPACTED = 5,667 SF (0.130 AC)
S-4 = 202 LF (303 SF)
S-5 = 15 LF (22.5 SF) CLASS 1 RIPRAP APRON
S-6 = 5 LF (7.5 SF) DOWNSTREAM TEMP. COFFER DAM
S-7 = 15 LF (22.5 SF) UPSTREAM TEMP. COFFER DAM
TOTAL = 237 LF (355.5 SF = 0.008 AC)
\
118
117
__
VESTAL RD. EXT.
EX. PROPERTY LINE
LAKE DR.
- -
EXISTING STREAM COVERED
BY BOTTOMLESS ARCH CULVERT,
TO REMAIN UNDISTURBED
S-1, 2 & 3 TOTAL = 112 LF / 448 SF (0.010 AC)
EXISTING STREAM TO BE
IMPACTED BY PIPED CULVERT
S-5, 6, 7 & 8 TOTAL = 237 LF / 355.5 SF (0.008 AC)
EXISTING WETLANDS TO
REMAIN UNDISTURBED
-
I/
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PROP.
SCM
It
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1
1
1
GRAPHIC SCALE
VESTAL
RD.
09/08/2022
ISSUE
ADDRESS CITY OF WINSTON SALEM COMMENTS
ADDRESS WETLAND CONSULTANT COMMENTS
ADDRESS DWR COMMENTS
I
03
m
m
DATE
N
O
in
0
07/27/2022
09/08/2022
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SITE GRADING:
(W-3) WETLANDS IMPACTED = 3,780 SF (0.087AC)
(REFER TO SHEETS C-3.8 & C-6.7 FOR TEMP. COFFER DAM)
EXISTING WETLANDS
TO BE IMPACTED
W-1 A, W-18, W-2 & W-3 = 10,609 SF (0.244 AC)
0
120'
240'
( IN FEET )
1 inch = 120 ft.

875
870
865
860
855
850
845
843
-(l+
RIDGE BLUFF DR. WEST WALL
PROP. GRADE
STA:-0+28.01
ELEV:872.94
STA:0+33.28
ELEV:872.15
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890
880
870
860
850
840
830
820
875
870
865
860
855
850
845
843
+ i'-
-850
LIMITS OF
EXIST.
WETLANDS
0
PROP. PSDE
an
inn
BW:848.43
TW:855.00
BW:847.51
TW:859.99
PROP. SECURITY FENCE
AT TOP OF WALL
(OWNER TO SELECT STYLE)
BW:847.39
TW:865.00
(W-1A) 2,046 SF
WETLANDS TO
BE IMPACTED
• N \\\' BW:847.82
• \ • 1 TW:871.30
\ 1 \ \ • 2•. CLASS 1 RIPRAP APRON TO BE
\ \ , INSTALLED FLUSH W/ EX. GRADE
•\ \ UNDERNEATH BOTTOMLESS CULVERT
LIMITS OW \\\ \ TW:871.69
EXIST. WETLANDS •
H
i - r
\10-BW:852.10
TW:857.00
(S-2) 5 LF (20 SF) BY DOWNSTREAM
TEMPORARY COFFER DAM
PROP. HEADWALL TO BE
• DESIGNED BY OTHERS
BW:850.49,
TW:861.61
GRAPHIC SCALE
20'
40'
( IN FEET )
1 inch = 20 ft.
- 42
TW.872.02
BW:847.01
TW:872.13
BW:846.98
(W-1 B) 4,783 SF
WETLANDS TO
BE IMPACTED
50' PUBLIC RO• W
-12
m
c
EXISTING WETLANDS
TO BE IMPACTED
W-1A & W-1B = 6,829 SF (0.157 AC)
\\
PROP.\ GUARDRAIL
.
.0:
PROP. 8" SANITARY SEWER
A 1 1- -1_ 1 1
PROP. 8" WATER LINE
PROP. STORM DRAINAGE
+
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(S-1) 87 LF (348 SF) STREAM
COVERED BY BOTTOMLESS
CULVERT (4' WIDE STREAM BED
TO REMAIN UNDISTUREBD)
BW:847.90
TW:871.29 - -
EX:844.99
TW:871.65
TW:871.98
BW.851.36
TW:872.12
BW:853.99
6,532
EXISTING STREAM COVERED BY BOTTOMLESS ARCH CULVERT (BAC),
TO REMAIN UNDISTURBED (4' BOTTOM WIDTH)
S-1 = 87 LF (348 SF, INCLUDES 15 LF CLASS 1 RIPRAP
INSTALLED FLUSH UNDERNEATH BAC)
S-2 = 5 LF (20 SF) DOWNSTREAM TEMP. COFFER DAM
S-3 = 20 LF (80 SF) UPSTREAM TEMP. COFFER DAM
TOTAL = 112 LF (448 SF = 0.010 AC)
RIDGE BLUFF DR. STREAM CENTERLINE
1
860
PROP. PSDE •
le-
BW:854.15
TW:857.00 •
J
BW- :851.00
TW:862.00 '
s
•
550'
w �X /
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PROP. HEADWALL TO BE \ I I I
DESIGNED BY OTHERS
J /
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EXIST. TRIBUTARY
, OF MUDDY CREEK
(S-3) 20 LF (80 SF) OF STREAM IMPACTED
BY UPSTREAM TEMPORARY COFFER DAM
BW:856.00
TW:865.00
BW:860.00 N
TW:864.11 '
- -1-
875
870
865
860
855
850
845
843
-(l+
PROP. 50' PUBLIC R/W
PROP. GRADE
TOP OF WALL
STA:1+97.11
RIDGE
BLUFF
DR. CENTERLINE
TOP OF WALL -
STA:1+24.93 STA:1+61.84 ELEV:872.79
ELEV:871.70 I
VM
ELEV:871.65
8" SS
18" RCP
EXIST. GRADE
TOP
•
OF CULVERT
BOTTOMLESS CULVERT
& HEADWALLS TO BE
DESIGNED BY OTHERS
ALONG
STREAM
CENTERLINE
STA:1+19.90
ELEV:844.00
(S-1) 87 LF STREAM
(STREAM
COVERED BY BOTTOMLESS
BED TO REMAIN UNDISTURBED)
CULVERT
STA:2+02.24
ELEV:845.00
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IELEV:873.19
STA:0+33.22
ELEV:872.13
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890
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VERTICAL
SCALE
( IN FEET )
1 inch = 20 ft.
GRAPHIC SCALE
0 20'
40'
820 ( IN FEET )
1 inch = 20 ft.
VERTICAL
SCALE
( IN FEET )
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0
875
870
865
LL
860
855
850
845
843
+(l(I
GRAPHIC SCALE
20'
40'
( IN FEET )
1 inch = 20 ft.
09/08/2022
ISSUE
ADDRESS CITY OF WINSTON SALEM COMMENTS
ADDRESS WETLAND CONSULTANT COMMENTS
ADDRESS DWR COMMENTS
I m
m
m
m
DATE
N
N
in
0
07/27/2022
09/08/2022
14'
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PROP. MC
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VESTAL RD.
CL ELEV:887.97
EXT.
1
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PROP. 24"
RCP
PROP. 24"
RCP
EXIST. GRADE
\ TW:874.14
PROP. GRADE
TW:874.24
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STA:0+50.00
EL EV:865.00
890
PROP. 8"
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885
880
875
870
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GRADE
865
863
+(JO
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STREAM BUFFER
50' FROM TOP OF BANK
3,0:1,
(S-5) 15 LF (22.5 SF) OF STREAM
IMPACTED BY RIPRAP APRON &
(S-6) 5 LF (7.5 SF) BY DOWNSTREAM
TEMPORARY COFFER DAM
BW:868.30
TW:873.42
(S-4) 202 LF (303 SF) OF STREAM
IMPACTED BY PROPOSED CULVERT
(W-2) 5,667 SF WETLANDS
IMPACTED BY PROP. CULVERT
PROP. STORM
• DRAINAGE PIPE
• \
PROP. 8" WATER LINE
120**
EXISTING WETLANDS IMPACTED BY
PROPOSED TRADITIONAL CULVERT
W-2 = 5,667 SF (0.130 AC)
EXISTING STREAM IMPACTED BY PROPOSED
TRADITIONAL CULVERT (1.5' BOTTOM WIDTH)
S-4 = 202 LF (303 SF)
S-5 = 15 LF (22.5 SF) CLASS 1 RIPRAP
S-6 = 5 LF (7.5 SF) DOWNSTREAM TEMP. COFFER DAM
S-7 = 15 LF (22.5 SF) UPSTREAM TEMP. COFFER DAM
TOTAL = 237 LF / 355.5 SF (0.008 AC)
900
B W:865.73
TW:873.36
PROP. SECURITY FENCE
AT TOP OF WALL
(OWNER TO SELECT STYLE) ,
BUFFER
100' FROM TOP
, EXIST. TRIBUTARY
• OF MUDDY CREEK •
CLASS 1 RIPRAP APRON TO BE
INSTALLED FLUSH W/ EX. GRADE I '
' PROP. HEADWALL TO
BE DESIGNED BY OTHERS
TW:884.65
EX:867.14
TW:884.77
BW:872.56 \
30,355 SF
0
VESTAL RD. EXT. CULVERT
PROP. GRADE
890 TW:884.60
880
PROP. 50' PUBLIC R/W
VESTAL RD. EXT.
CL ELEV:888.04 -\
8" SS- 8" WM-/i°
EX:867.00
870
860
24" RCP
110.28' of 72" CAP @ 1.86%
900
890
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TW:873.25
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ti
860
PROP. HEADWALL TO BE
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(S-7) 15 LF (22.5 SF) OF STREAM
IMPACTED BY TEMPORARY COFFER DAM
LIMITS OF
EXIST. WETLANDS
0
GRAPHIC SCALE
20'
40'
( IN FEET )
1 inch = 20 ft.
VERTICAL
SCALE
( IN FEET )
1 inch = 20' ft.
GRAPHIC SCALE
0 20'
40'
890
885
880
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875
870
865
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VESTAL
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-
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TW:885.37
TW:885.40
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VERTICAL
SCALE
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0
890
885
HEADWALL
BY
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880
875
870
GE)
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865
+u0
GRAPHIC SCALE
20'
40'
( IN FEET )
1 inch = 20 ft.
09/08/2022
ISSUE
ADDRESS CITY OF WINSTON SALEM COMMENTS
ADDRESS WETLAND CONSULTANT COMMENTS
ADDRESS DWR COMMENTS
03
I
03
m
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07/27/2022
09/08/2022
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(S-7) 15 LF
COFFER DAM
(S-5) 15 LF RIPRAP &
(S-6) 5 LF COFFER DAM
( IN FEET )
1 inch = 20 ft.

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29,520 SF
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LIMITS OF
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(TO REMAIN
UNDISTURBED)
EXIST. TRIBUTARY
OF MUDDY CREEK,
BOTTOM WIDTH: 4.0'
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EXISTING WETLANDS TO BE
IMPACTED BY SITE GRADING
W-3 = 3,780 SF (0.087 AC)
GRAPHIC SCALE
0 40'
"38
80'
( IN FEET )
1 inch = 40 ft.
811
•
09/08/2022
ISSUE
ADDRESS CITY OF WINSTON SALEM COMMENTS
ADDRESS WETLAND CONSULTANT COMMENTS
ADDRESS DWR COMMENTS
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07/27/2022
09/08/2022
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09

[e-mail]
From: Matthew Gantt <[e-mail]>
Sent: Wednesday, August 3, 2022 2:23 PM
To: Keith Huff; [e-mail]
Cc: 'Matt Kirchner'; 'Jeremy L. Roberts'; 'Haley Hardin'; 'Kayle Schmidt'
Subject: RE: [EXTERNAL] Long Creek Village (22-0018)
Hi Lauren,
Our City Engineer, Robert Prestwood, will accept the use of the :ontech Bridgecc structural steel plate. It will also have
to be approved for use by NCDOT. Supporting documentation will need to be provided. As previously noted, we may
not issue the driveway permit without final sealed plans for the culverts.
Thanks,
Matt
MENSalvni
ONE TEAM
Committed to Excellence
Matthew E. Gantt, PE 141
Senior Civil Engineer
Bryce A. Stuart Municipal Building
101 East First Street
Winston-Salem, NC 27101
Office: 336-747-6846
Email: [e-mail]
All e-mails including attachments sent to and from this address are
subject to being released to the media and the public in accordance
with the North Carolina Public Records Law.
From: Keith Huff <[e-mail]>
Sent: Wednesday, August 3, 2022 2:05 PM
To: [e-mail]
Cc: Matthew Gantt <[e-mail]>; 'Matt Kirchner' <[e-mail]>; 'Jeremy L. Roberts'
<[e-mail]>; 'Haley Hardin' <[e-mail]>; 'Kayle Schmidt'
<[e-mail]>
Subject: RE: [EXTERNAL] Long Creek Village (22-0018)
Hi Lauren,
I am going to speak with the City Engineer about the approval process for this request. Field Operations has purview
over the mechanically stabilized slope sections of the code but not this section of the IDS. I will follow up with you ASAP.
Thanks,
Keith
1

From: [e-mail] <[e-mail]>
Sent: Tuesday, August 2, 2022 9:31 AM
To: Keith Huff <[e-mail]>
Cc: Matthew Gantt <[e-mail]>;'Matt Kirchner'<[e-mail]>; 'Jeremy L. Roberts'
<[e-mail]>;'Haley Hardin'<[e-mail]>;'Kayle Schmidt'
<[e-mail]>
Subject: RE: [EXTERNAL] Long Creek Village (22-0018)
* * * CAUTION! EXTERNAL SENDER * * * STOP. EVALUATE. VERIFY. Were you expecting this email?
Does the content make sense? Can you verify the sender? If the email is suspicious: Do not click links or o . en
attachments. Click the Report Message button in Outlook to notify Information Systems.
Good morning, Keith,
I am requesting another exception for Long Creek Village for the use of a structural steel plate bottomless culvert. Please
see the attached letter outlining the request.
Thank you,
Lauren Thomas, P.E.
Eagle Engineering, Inc.
Senior Project Manager I Civil Division
(704)-893-1262 - Direct
(704)-882-4222 - Office
lauren.thomas©eagleonline.net
2013 Van Buren Avenue, Suite A
Indian Trail, NC 28079
www.eagleonline.net
Any attached files are for information use only. Eagle Engineering, Inc. (EEI) assumes no responsibility for the accuracy or the validity of any electronic data. All
construction should follow signed and sealed construction documents. The content of this email is the confidential property of EEI and should not be copied, modified,
retransmitted, or used for any purpose except with EEI's written authorization. If you are not the intended recipient, please delete all copies and notify us immediately.
From: Matthew Gantt <[e-mail]>
Sent: Monday, August 1, 2022 2:07 PM
To: [e-mail]
Subject: RE: [EXTERNAL] Long Creek Village (22-0018)
Hi Lauren,
The use of the structural steel plate would need to be approved by our Stormwater Director, Keith Huff. He may be
reached at [phone] or at [e-mail]. For Engineering, we need to have the completed design
submitted in conjunction with the driveway permit drawings.
Thanks,
Matt
2

litsionSalein
ONE TEAM
Committed to Excellence
Matthew E. Gantt, PE 11)
Senior Civil Engineer
Bryce A. Stuart Municipal Building
101 East First Street
Winston-Salem, NC 27101
Office: 336-747-6846
Email: [e-mail]
All e-mails including attachments sent to and from this address are
subject to being released to the media and the public in accordance
with the North Carolina Public Records Law.
From: [e-mail] <[e-mail]>
Sent: Monday, August 1, 2022 11:08 AM
To: Matthew Gantt <[e-mail]>
Subject: [EXTERNAL] Long Creek Village (22-0018)
*** CAUTION! EXTERNAL SENDER *** STOP. EVALUATE. VERIFY. Were you expecting this email?
Does the content make sense? Can you verify the sender? If the email is suspicious: Do not click links or o . en
attachments. Click the Re . ort Messa e button in Outlook to notif Information S stems.
Hey Matt,
We are working through the comments for Long Creek Village. Regarding the first comment you provided, the
bottomless culvert is proposed as the Contech Bridgecor structural steel plate. Will that be an acceptable product? I see
in the IDS manual that all metal pipe should be CAP, but it isn't clear if that applies to the bottomless culvert as well.
Contech will design the bottomless culvert, and a third party structural engineer will design the retaining walls at each
culvert. Is it ok for us to make a resubmittal of the civil plans to address all other comments, and once we have full
design documents for the culvert & walls, we can submit that info for final approval?
Thank you,
Lauren Thomas, P.E.
Eagle Engineering, Inc.
Senior Project Manager I Civil Division
(704)-893-1262 - Direct
(704)-882-4222 - Office
lauren.thomas©eagleonline.net
2013 Van Buren Avenue, Suite A
Indian Trail, NC 28079
www.eagleonline.net
Any attached files are for information use only. Eagle Engineering, Inc. (EEI) assumes no responsibility for the accuracy or the validity of any electronic data. All
construction should follow signed and sealed construction documents. The content of this email is the confidential property of EEI and should not be copied, modified,
retransmitted, or used for any purpose except with EEI's written authorization. If you are not the intended recipient, please delete all copies and notify us immediately.
3

../
/ /
../ /
.../
/
/ Ai ../
/ /
/ /
/ /
/ /
/ /
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/ /
//
/ / /
/ / /
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�_- /
// //
/ /
/
/ / - -/
• FINAL GRADE ONCE
HEADWALL IS INSTALLED
(TOP ELEV = 872)
s •
PROP. SANDBAG COFFERDAMS
TO PREVENT BACKFLOW
DOWNSTREAM OF CULVERT
PROP. SILT BAG
/ FOR DEWATERING
WORK AREA
_/'
PROP. WORK AREA
DEWATERING PUMP
/, / /
/ /
/ //
// /' /
/
-/ /-,-'*---
.„....-
..//
/
PROP. TIMBER MAT
FOR INITIAL STREAM &
WETLAND CROSSING, TYP.
(REF. DETAIL ON C-6.7)
�jQ-Q�Q�C
DO'® •
SILT FENCE, TYP.
(NCDEQ STD. 6.62)
ROCK FILTER BERM, TYP.
(NCDEQ STD. 6.55)
USE STAPLES AS NEEDED
TO SECURE HOSE IN PLACE
PROP. FLEXIBLE .
PUMP HOSE
PROP. WATER PUMP
, 4E-
PROP. SANDBAG COFFERDAMS
TO BLOCK FLOW UPSTREAM
OF CULVERT
DIRECTION OF EX.
STREAM FLOW
HIGH HAZARD SILT FENCE / -
BELOW WALL W/ STONE OUTLET
CONSTRUCTION SEQUENCE FOR DRY CULVERT INSTALLATION:
TIMBER MAT INSTALLATION:
1. INSTALL TEMPORARY TIMBER MATS AT STREAM AND WETLAND CROSSINGS AS SHOWN TO PROVIDE CONSTRUCTION
EQUIPMENT ACCESS TO THE WORKING AREAS.
2. REFER TO DETAIL & NOTES ON SHEET C-6.7.
3. DISTURBANCE OF THE STREAMS AND WETLAND AREAS SHALL BE MINIMIZED DURING TIMBER MAT INSTALLATION.
4. ORIENTATION OF CROSSING MAY CHANGE IN ORDER TO TIE INTO ACCESS ROAD. CLEAR DISTANCE FROM STREAM
TO REMAIN 5+ FEET.
5. MODIFICATION TO CROSSING MAY BE REQUIRED TO ACCOMMODATE LARGER/HEAVIER EQUIPMENT. THE CLEAR
DISTANCE FROM STREAM WILL NOT CHANGE.
6. PROPER EROSION CONTROL DEVICES TO PREVENT MATERIAL FROM ENTERING STREAM AND WETLAND AREAS AND
TO PROTECT STREAM BANK SHALL BE INSTALLED AND MAINTAINED.
COFFERDAM INSTALLATION:
1. INSTALL UPSTREAM SAND BAG COFFER DAMS. LAY THICK MIL POLY SHEETING ALONG THE STREAM BED BEFORE
PLACING SANDBAGS. EXCESS PLASTIC SHOULD BE FOLDED OVER THE SAND BAGS IN THE UPSTREAM DIRECTION
AND ANOTHER LAYER OF SAND BAGS PLACED ON TOP OF THE PLASTIC TO HELP SEAL THE DAM FROM INFILTRATION.
2. EXTEND PLASTIC ALONG THE STREAM BOTTOM AS FAR UPSTREAM AS PRACTICABLE TO INCREASE THE FLOW
LENGTH OF SUBSURFACE FLOW & PREVENT FLOW FROM GOING BENEATH THE SAND BAG COFFERDAM.
* NOTE: IF INDUSTRIAL SAND BAGS ARE USED, ADDITIONAL SMALL SAND BAGS MAY BE PLACED IN BETWEEN LARGE
SAND BAGS TO HELP SEAL THE WORK AREA.
3. ONCE THE UPSTREAM COFFERDAM IS SECURED, DIVERT UPSTREAM FLOWS AROUND THE COFFERDAM AREA BY
USING A BYPASS PUMP. THIS WATER SHOULD BE DISCHARGED DIRECTLY INTO THE STREAM CHANNEL BELOW THE
DOWNSTREAM COFFERDAM. AT THE PUMP OUTLET, HIGH VELOCITY (>5 FPS) WATER BEING DISCHARGED BACK INTO
THE STREAM HAS THE POTENTIAL TO ERODE THE STREAM SUBSTRATE & CAUSE A TURBIDITY RELEASE. IMPLEMENT
SCOUR PREVENTION MEASURES AT THE DISCHARGE SITE TO REDUCE ENERGY AT THE POINT OF DISCHARGE AND
PREVENT ELEVATED TURBIDITY LEVELS.
4. INSTALL DOWNSTREAM SAND BAG COFFERDAM IN THE SAME MANNER AS THE UPSTREAM COFFERDAM. THE
DOWNSTREAM COFFERDAM ACTS AS A SAFEGUARD AGAINST FAILURE OF THE UPSTREAM COFFERDAM AND TO
CONTROL DOWNSTREAM BACKWATER SITUATIONS.
5. ONCE BOTH COFFERDAMS ARE INSTALLED, DEWATER THE AREA BETWEEN THE COFFERDAMS USING A PUMP TO
CREATE A "DRY" WORK AREA (SEE NOTES FOR DEWATERING). IF THE WATER IS TURBID FROM DISTURBANCE
CAUSED BY THE INSTALLATION OF THE COFFERDAMS, THE WATER SHOULD BE PUMPED TO A TEMPORARY SILT BAG
TO ALLOW FILTRATION TO OCCUR. IF THE WATER INSIDE OF THE COFFERDAMS VISUALLY APPEARS TO BE AS
TURBID AS THE WATER FLOWING INTO THE UPSTREAM COFFERDAM, IT CAN BE PUMPED DOWNSTREAM OF THE
DOWNSTREAM COFFERDAM.
6. COFFERDAMS ARE SUBJECT TO A SMALL DEGREE OF LEAKAGE. A PUMP SHOULD BE PLACED IN THE WORK AREA TO
CATCH & EVACUATE ACCUMULATING WATER TO THE TEMPORARY SILT BAG MENTIONED IN STEP 5.
STONE SILT FENCE
OUTLET, TYP.
i 850
DEWATERING:
1. AFTER THE COFFERDAMS ARE INSTALLED, IT IS NECESSARY TO
DEWATER THE WORK AREA. THIS WATER SHOULD BE PUMPED
INTO A TEMPORARY SILT BAG FOR FILTRATION BEFORE
DISCHARGING BELOW THE DOWNSTREAM COFFERDAM AND
BACK INTO THE STREAM.
2. A SILT BAG MADE OF FILTER FABRIC SHALL BE USED TO FILTER
TURBID WATER. PLACE THE SILT BAG ON 8" OF NO. 5 OR 57
STONE OR ON WOOD PALLETS. USE AN ADEQUATE NUMBER OF
PALLETS TO FULLY ELEVATE THE ENTIRE SILT BAG ABOVE
NATURAL GROUND. ENSURE THE PUMP PRESSURE DOES NOT
EXCEED FILTER MEDIA PRESSURE RATING.
3. THE SILT BAG SHOULD BE LOCATED CLOSE TO THE WORK AREA
WITH ADEQUATE VEGETATION BETWEEN IT AND THE STREAM TO
PROVIDE ADDITIONAL FILTRATION. (THESE SILT BAGS ARE
SHOWN IN PLAN VIEW BUT SHOULD BE PLACED IN THE BEST
LOCATION BASED ON FIELD CONDITIONS AT THE CONTRACTORS
DISCRETION.)
4. WHEN PUMPING DIRTY WATER TO THE SILT BAGS:
• HOSES SHALL BE SET UP BETWEEN THE SILT BAG AND THE
WORK AREA PUMP BETWEEN THE COFFERDAMS TO BE
DEWATERED.
• THE 'DIRTY WATER' PUMP(S) WILL THEN BE STARTED AND THE
WATER WILL BE PUMPED TO THE SILT BAG.
6. EVACUATE ANY FISH OR WILDLIFE FROM THE DEWATERED WORK
AREA AND PUMP IT DRY AS SOON AS POSSIBLE.
7. IF THERE IS LEAKAGE AROUND THE COFFERDAM OR UPWELLING
IN THE WORK AREA, POCKETS WILL BE EXCAVATED IN THE
WORK AREA TO COLLECT THE WATER. THIS WATER SHALL BE
PUMPED INTO THE SILT BAG FOR FILTRATION PRIOR TO ITS
RELEASE BACK INTO THE STREAM. CLEAN CRUSHED STONE
SHALL BE PLACED AROUND THE WORK AREA PUMP INTAKE TO
FURTHER MINIMIZE SUSPENDED SEDIMENTS FROM BEING
PUMPED INTO THE SILT BAG.
PROP. SANDBAG COFFERDAMS
TO PREVENT BACKFLOW
DOWNSTREAM OF CULVERT
PROP. SILT BAG
FOR DEWATERING -
/ WORK AREA ./
FINAL GRADE ONCE
HEADWALL IS INSTALLED
(TOP ELEV = 873)
\ /
/ / / / -r / � / -- / EXIST. WETLANDS , /
/ / ' / DIRECTION OF EX. /
/ / / / 1*-404.--.�STREAM FLOW /
/ / / / / PROP. PUMP OUTFLOW .
110vffirl/
w / -�
PROP. 72" CORRUGATED
ALUMINUM PIPE CULVERT
• // �/, /
/ ,/,
// Yr j- O
/
DIRECTION OF EX.
CULVERT INSTALLATION:
1. ONCE THE COFFERDAMS ARE IN PLACE AND THE WORK AREA IS DRY,
CONSTRUCTION OF THE CULVERTS MAY BEGIN. THE BOTTOMLESS CULVERT,
PIPED CULVERT & HEADWALLS SHALL BE INSTALLED IN ACCORDANCE WITH THE
MANUFACTURER'S SPECIFICATIONS. THE SIZE & ELEVATION OF THE REQUIRED
FOOTINGS ARE TO BE DESIGNED BY OTHERS. FURTHER DETAIL OF SPECIFIC
INSTALLATION INSTRUCTIONS FOR THE CULVERTS AND RETAINING WALLS WILL
BE PROVIDED WITH THE DESIGN DOCUMENTS UNDER SEPARATE COVER.
2. AS BACKFILL IS PLACED, SLOPES SHALL BE IMMEDIATELY STABILIZED WITH
SEEDING & EROSION CONTROL MATTING.
3. AT THE END OF EACH WORK DAY, SILT FENCE SHALL BE PLACED ALONG THE
EDGE OF DISTURBANCE TO DETER SEDIMENT FROM ENTERING THE STREAM.
4. SILT FENCE OUTLET WITH ADDITIONAL HORSESHOE ROCK DAM SHALL BE
PLACED AT THE BOTTOM OF SLOPES TO FILTER WATER AS IT EXITS THE
DISTURBED AREA.
COFFERDAM REMOVAL:
1. AFTER THE BOTTOMLESS CULVERTS ARE INSTALLED, BACKFILL IS PLACED, AND
SLOPES ARE STABILIZED, THE COFFERDAMS CAN BE REMOVED TO RESTORE
STREAM FLOW THROUGH THE CULVERTS.
2. THE DIVERSION PUMP SYSTEM WILL BE STOPPED AND THE UPSTREAM
COFFERDAM SHOULD SLOWLY BE BREACHED. THE FIRST FLUSH OF DIRTY
WATER WILL BE CAPTURED BY THE WORK AREA 'DIRTY WATER' PUMP, WHICH
WILL THEN PUMP THE WATER INTO THE SILT BAG.
3. WHEN THE WATER BEHIND THE REMAINING INTACT COFFERDAM IS VISUALLY
SIMILAR, THAT DAM SHALL BE BREACHED.
4. THE REMAINDER OF THE UPSTREAM COFFERDAM AND THE DIVERSION PUMP
SYSTEM SHALL BE REMOVED. SAND BAG COFFERDAMS SHALL BE REMOVED BY
HAND.
5. ONCE WATER FLOW IS RESTORED TO THE AREA INSIDE OF THE NEW CULVERT,
RESTORATION OF THE CONSTRUCTION SITE SHALL BEGIN. COMPLETE FINAL
STABILIZATION TREATMENTS, RESTORATION OF ANY TEMPORARY WORK AREAS,
AND REBUILD THE ROADWAY ON TOP OF THE NEW CULVERT.
6. AREAS STEEPER THAN 2H:1 V SHALL BE LINED WITH RIPRAP. ALL OTHER SLOPES
SHALL BE VEGETATED WITH SEED MIX THAT ALLOWS FOR RAPID GROWTH AND
STABILIZATION AS WELL AS PLANTS THAT HAVE SUBSTANTIAL ROOT SYSTEMS
FOR STABILIZATION THAT TAKE LONGER PERIODS TO BE ESTABLISHED.
ROCK FILTER BERM, TYP.
(NCDEQ STD. 6.55)
SILT FENCE, TYP.
(NCDEQ STD. 6.62)
/ - STONE SILT FENCE
OUTLET, TYP.
I
PROP. SANDBAG COFFERDAMS
TO BLOCK FLOW UPSTREAM
/, y ...... OF CULVERT
PROP. TIMBER MAT
FOR INITIAL STREAM &
WETLAND CROSSING, TYP.
(REF. DETAIL ON C-6.7)
PROP. WATER PUMP
PROP. PUMP INFLOW
/
/
/
/ / /
/ /
/
EROSION CONTROL LEGEND
DESCRIPTION SYMBOL ON PLANS
POROUS BAFFLES (NCDEQ 6.65)
LIMITS OF DISTURBANCE
DRAINAGE AREA DELINEATION
SILT FENCE (NCDEQ 6.62)
TEMPORARY DIVERSION DITCH
(NCDEQ 6.20)
FLEXIBLE SLOPE DRAIN
(NCDEQ 6.32)
RIPRAP
ROCK CHECK DAM (NCDEQ 6.63)
STONE SILT FENCE OUTLET
LOD
r
TD >
LOD
GRAPHIC SCALE
0 20'
40'
( IN FEET )
1 inch = 20 ft.
\\IIIII/t1/
GI N Eti
1 1 1 1 1, 'bJ/08/2022
ISSUE
ADDRESS CITY OF WINSTON SALEM COMMENTS
ADDRESS CITY OF WINSTON SALEM COMMENTS
ADDRESS DWR COMMENTS
I m
m
m
m
DATE
N
CV
0
N
CV
N
CO
09/08/2022
('
(0
N.
LONG CREEK VILLAGE
BHR LAND HOLDINGS, LLC
4389 INDIAN TRAIL FAIRVIEW RD
INDIAN TRAIL, NC 28079
( C-3.8
Sheet
11/4

a03 ONIMVUa MIVaNVIS HSI1DN3
SHEET 1 OF 1
1607.01
/
/
/
/
/
CLASS "A" STONE
8 IN. MIN. DEPTH
SO
NOTES:
1. PROVIDE TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGE
TRUCKS
2. LOCATE ENTRANCE(S) TO PROVIDE FOR UTILIZATION
BY ALL CONSTRUCTION VEHICLES.
3. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT
TRACKING OR DIRECT FLOW OF MUD ONTO STREETS.
PERIODIC TOPDRESSING WITH STONE WILL BE NECESSARY.
4. ANY MATERIAL TRACKED ONTO THE ROADWAY MUST BE
CLEANED UP IMMEDIATELY.
5. LOCATE GRAVEL CONSTRUCTION ENTRANCE AT
ALL POINTS OF INGRESS AND EGRESS UNTIL SITE IS STABILIZED.
PROVIDE FREQUENT CHECKS OF THE DEVICE AND TIMELY
MAINTENANCE.
6. NUMBER AND LOCATION OF CONSTRUCTION ENTRANCES TO
BE DETERMINED BY THE ENGINEER.
7. USE CLASS 'A' STONE OR OTHER COARSE AGGREGATE APPROVED
BY THE ENGINEER.
NOTE: PLACE FILTER FABRIC BENEATH STONE
O o
Q
Q
H .:c
LI_Ja1--1Z
00co_
cc
a U Q o
H-
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CC 0000Occ
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LL
ENGLISH STANDARD DRAWING
SHEET 1 OF 1
1607.01
Steel
post
Wire
fence
24"
e9
8' max. standard strength fabric with wire fence
6' max. extra strength fabric without wire fence
18-24"
8" down & 4"
forward along
the trench
4
Plastic or
wire ties
Natural
ground
Filter
fabric
Wire
fence
Filter
Steel fabric
post
• • • • .
• '•. • .: • • •
4 • •'
••• min•.•
• • • • • • ••. •
• • • . •.• •
24"
▪ ...••••
•.• . • • • • • • • •
• • •. ••• e
.•
Figure 6.62a Installation detail of a sediment fence.
••.
••
Cross -Section
View
Backfill trench
and compact
thoroughly
T
8"
min
Natural
ground
vpslope-
STEEL POST
WIRE FENCING
(IF APPLICABLE)
WOVEN FILTER FABRIC
GENERAL NOTES:
4' MAX.
-I I 1III-I
:III=III=1I1=
-1 El
11mmIIj
11
IIE
CLASS 1 OR 2
RIP -RAP WITH
4 INCHES OF
WASHED STONE ON
UPSTREAM FACE
I -III -II
-1 I -III -I 1 b I 1=11 11=11 I� 11=11 k
it 11111 IT 1 1-111 IT 1 1--111 IT I 1--111Trl
lEl 1 IE I lE11 IE I lE11 1E 1111111 E
_,III-111-111=1 I I -I 11=1 I I -I 11=1 I I-1
1. SEDIMENT FILTER OUTLET SHALL BE 16 INCHES HIGH BUT NO TALLER THAN 18 INCHES.
2. CLASS 1 OR 2 RIP -RAP SHALL BE USED AND COVERED WITH 4 INCHES OF NCDOT #5 OR
#57 WASHED STONE ON THE UPSLOPE SIDE.
3. POSTS SHALL BE NO MORE THAN 4 FEET APART.
4. SITE OUTLETS AT ANY POINT SMALL CONCENTRATED FLOWS ARE ANTICIPATED AND AT THE
DIRECTION OF THE INSPECTOR.
5. ONE ACRE MAXIMUM DRAINAGE AREA PER OUTLET.
CLASS 1 OR 2
RIP -RAP
MAINTENANCE NOTES:
1' MIN.
STEEL POST
WASHED STONE
,,,,/-(NCDOT #5 OR #57)
FLOW
II II 11-11 11 11 11 n n nIf '
111111
1. FILTER OUTLETS SHALL BE INSPECTED BY THE FINANCIALLY RESPONSIBLE PARTY OR
HIS AGENT IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING
PROLONGED RAINFALL. ANY REPAIRS NEEDED SHALL BE MADE IMMEDIATELY.
2. THE STONE SHALL BE REPLACED PROMPTLY AFTER ANY EVENT THAT HAS CLOGGED
OR REMOVED IT.
3. SEDIMENT DEPOSITS SHOULD BE REMOVED WHEN DEPOSITS REACH HALF THE HEIGHT
OF THE BARRIER. ANY SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT
FENCE OUTLET IS REMOVED SHALL BE DRESSED TO CONFORM TO THE EXISTING
GRADE, PREPARED AND SEEDED.
TEMPORARY CONSTRUCTION ENTRANCE
PVC End
Cap
Arm Assembly
PERSPECTIVE VIEW
PVC Elbow
Water Surface
4- "C" Enclosure
Water Entry
Unit
PVC Vent
Pipe
Schedule 40
PVC Pipe
PVC Tee
r WPM.
PVC End
Cap
PVC Pipe
Z" Holes in
Underside
Flexible
Hose
Schedule 40
PVC Pipe
limPlori
PVC Tee Orifice
Plate
Bottom Surface
END VIEW
FRONT VIEW
Inlet zone
25% of surface area
5'Crest Width
Inflow
Structure
Ri pra p
or Slope Drain
Earthen
embankment
with stabilized
side slopes
TEMPORARY SILT FENCE
First Chamber
25% of surface area
e
•
NCDEQ STD. 6.62
Second Chamber
25% of surface area Outlet zone
i
Baffles
Ili
Ofi
111
111
kip
I41
4IIIII►
4
Ago
2590 of surface area
Skimmer
Dewatering
Device
Emergency
Spillway
TEMPORARY SILT FENCE OUTLET
Drape baffle material over wire strand and
secure with plastic ties at posts and on wire every 12"
9 Gauge Min High -.0***iv
Tension Wire Strand
Shall Be Secured
To Post To Support
Baffle Material
1=I1=II=II=1I=11
Baffle Material
4' Max.
Extend 9 gauge wire to basin side or installT-post to anchor
baffle to side of basin and secure to vertical post
�
3' MIN * %�ris,stkr'77);? Variable Depth
r+ iy
�1��A l V�i;
= = = _ • = Secure bottom of baffle to ground with
12" staples at 12" maximum spacing.
* If the temporary sediment basin will be
converted to a permanent stormwater basin
of greater depth, the baffle height should be
based on the pool depth during use as a
temporary sediment basin.
Note: Install three (3) coir fiber baffles in basins
at drainage outlets with a spacing of 1/4 the
basin Iength. Two (2) coir fiber baffles can be
installed in the basins less than 20 ft in Iength
with a spacing of 1/3 the basin Iength.
11 Gauge
Landscaping Staple
,II
•
•
1
1
Baffle Materia I
Steel Post
2'-0" Depth
Baffle Material should be secured to the bottom
and sides of basin using 12" landscape staples
NCDEQ STD. 6.62
NCDEQ STD. 6.64
SKIMMER
GRATE
EXPANSION
RESTRAINT
INI■ININININININININININ1
SECTION
HOOD
NOTES:
1. INLET MAINTENANCE SHALL BE DOCUMENTED IN PROJECT LOG BOOK.
2. FILTER TYPES SHALL BE APPROVED BY THE CITY INSPECTOR PRIOR
TO INSTALLATION.
3. FILTER BAGS MAY BE REMOVED WHEN SITE IS STABILIZED AT THE
DIRECTION OF THE ENGINEER.
4. FILTER BAGS SHALL BE REMOVED PRIOR TO STREET ACCEPTANCE
AND/OR CLOSE OUT OF GRADING PERMIT.
5. FILTER BAGS SHALL BE CLEANED OR REPLACED ON A REGULAR
BASIS (NOT BE MORE THAN HALF FULL AT ANY TIME).
6. FILTER BAGS MAY BE INSTALLED IN EXISTING CITY OR NCDOT ROADS
AS LONG AS STORM DRAINAGE IS NOT IMPEDED.
GRATE
1" REBAR FOR BAG
REMOVAL FROM INLET
FILTER BAG
DUMP LOOPS
CATCH BASIN
DEFLECTOR REQUIRED WHEN USED ON
EXISTING MAINTAINED STREETS.
DEFLECTOR SHALL BE PLACED SUCH THAT
IT WILL NOT COMPLETELY OBSTRUCT STORM
WATER FLOW FROM ENTERING VIA THE CURB
OPENING. ENSURE NO MORE THAN 25% OF
CURB OPENING IS OBSTRUCTED.
OUTLET
INSTALLATION
WIRE FENCING
OF APPLICABLE)
WOVEN FILTER FABRIC
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-111-1 111E
NCDEQ STD. 6.65
BAFFLE PLACEMENT
HARDWARE CLOTH
BETWEEN POSTS
AND COVERED BY
STONE
GENERAL NOTES:
1. SEDIMENT FILTER OUTLET AND HARDWARE CLOTH SHALL BE 16 INCHES HIGH BUT NO
TALLER THAN 18 INCHES.
2. HARDWARE CLOTH SHALL BE ANCHORED TO THE STEEL POSTS SECURELY USING
APPROPRIATE ANCHORS. HARDWARE CLOTH SHALL BE KEYED IN A MINIMUM OF 12 INCHES
IN LENGTH AND BACKFILLED PROPERLY AS SHOWN IN ABOVE DETAIL. HARDWARE CLOTH TO
BE SAME AS STD. 30.09 (19 GAUGE, 1/4" SPACING).
3. POSTS SHALL BE NO MORE THAN 4 FEET APART.
4. SITE OUTLETS AT ANY POINT SMALL CONCENTRATED FLOWS ARE ANTICIPATED AND AT THE
DIRECTION OF THE INSPECTOR.
STEEL POST
HARDWARE CLOTH
WASHED STONE
(NCDOT #5 OR #57)
FLOW
ANCHOR SKIRT;
EXCAVATE TRENCH
AND COMPACT
BACKFILL
MAINTENANCE NOTES:
1. FILTER OUTLETS SHALL BE INSPECTED BY THE FINANCIALLY RESPONSIBLE PARTY OR
HIS AGENT IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING
PROLONGED RAINFALL. ANY REPAIRS NEEDED SHALL BE MADE IMMEDIATELY.
2. THE STONE SHALL BE REPLACED PROMPTLY AFTER ANY EVENT THAT HAS CLOGGED
OR REMOVED IT.
3. SEDIMENT DEPOSITS SHOULD BE REMOVED WHEN DEPOSITS REACH HALF THE HEIGHT
OF THE BARRIER. ANY SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT
FENCE OUTLET IS REMOVED SHALL BE DRESSED TO CONFORM TO THE EXISTING
GRADE, PREPARED AND SEEDED.
DIRECTION
OF STREAM
FLOW
•
5' MIN.
-T
DIRECTION
OF TRAVEL
12' MIN.
BAFFLE DETAIL IN SEDIMENT BASIN
•
RIPRAP ACCESS ROAD PLACED ON EARTH
EMBANKMENT & TYPE 4 ENGINEERING FABRIC
4k1'x14' STACKED TIMBER MATS ON
RIPRAP BASE W/ TYPE 4 GEOTEXTILE
• _L.
5' MIN.
4'x1' (VARIABLE LENGTH) TIMBER MATS W/
TYPE 2 FILTER FABRIC SECURED BELOW
TOP OF
STREAM BANK
NOTES: f
1. TEMPORARY MAT CROSSINGS MAY BE USED AS A TEMPORARY BRIDGE OVER A STREAM OR WETLAND
AREA TO ALLOW VEHICLES ACCESS TO THE WORK SITE. MATS SHOULD NOT BE PLACED IN A WAY
THAT THEY RESTRICT THE NATURAL FLOW OF THE STREAM.
2. DURING INSTALLATION OF THE TEMPORARY MAT CROSSINGS, LIMIT EXCAVATION TO THE MINIMUM
EXTENT REQUIRED TO ALLOW INSTALLATION AND REMOVAL OF THE CROSSING.
3. THE CENTERLINE OF THE CROSSING SHOULD ALIGN WITH THE CENTERLINE OF THE ROADWAY
APPROACH ON BOTH SIDES FOR AT LEAST 50 FEET FROM EACH STREAM BANK. A SHORTER
DISTANCE MAY BE APPROVED ON SITE -SPECIFIC BASIS IF PHYSICAL CONSTRAINTS PRECLUDE
THE 50 FOOT MINIMUM.
4. AFTER CONSTRUCTING THE TEMPORARY CROSSINGS, STABILIZE ALL AREAS DISTURBED DURING
INSTALLATION USING RIPRAP, VEGETATION OR OTHER APPROPRIATE MEASURES.
5. MATS SHOULD BE IN GOOD CONDITION TO ENSURE PROPER INSTALLATION, USE AND REMOVAL.
6. OPERATING HEAVY EQUIPMENT IN WETLANDS SHALL BE MINIMIZED, AND SUCH EQUIPMENT OTHER
THAN FIXED EQUIPMENT (DRILL RIGS, FIXED CRANES, ETC.) SHALL NOT BE STORED, MAINTAINED,
FUELED OR REPAIRED IN WETLANDS UNLESS THE EQUIPMENT IS BROKEN DOWN AND CANNOT BE
EASILY REMOVED.
7. WOODY VEGETATION SHALL BE CUT AT OR ABOVE GROUND LEVEL AND NOT UPROOTED IN ORDER
TO PREVENT DISRUPTION TO THE WETLAND SOIL STRUCTURE AND TO ALLOW STUMP SPROUTS TO
REVEGETATE THE WORK AREA.
8. WHERE FEASIBLE, PLACE MATS IN A LOCATION THAT WOULD MINIMIZE THE AMOUNT NEEDED FOR
THE WETLAND CROSSING.
9. MINIMIZE IMPACTS TO STREAM AND WETLAND AREAS DURING INSTALLATION, USE AND REMOVAL.
10. INSTALL ADEQUATE EROSION CONTROLS AT APPROACHES TO MATS TO PROMOTE A SMOOTH
TRANSITION TO, AND MINIMIZE SEDIMENT TRACKING ONTO, THE MATS.
11. SELECT DECKING MATERIALS THAT ARE OF SUFFICIENT STRENGTH TO SUPPORT THE ANTICIPATED
LOAD.
12. ENSURE COMPONENTS ARE BUTTED TIGHTLY AND FASTENED SECURELY TO PREVENT SOIL TRACKED
ONTO THE BRIDGE FROM FALLING INTO THE STREAM/WETLANDS.
13. SECURELY ANCHOR THE BRIDGE AT ONE END USING STEEL CHAIN OR CABLE. ANCHORS MAY
INCLUDE LARGE TREES, BOULDERS, OR DRIVEN STEEL ANCHORS.
LIMITS OF
WETLANDS
•
•
•
•
MAINTENANCE NOTES:
•
•
•
•
16' MIN.
L
NCDEQ STD. 6.65
. /
NOT TO SCALE
1. TEMPORARY MAT CROSSINGS SHOULD BE MONITORED TO ASSURE CORRECT FUNCTIONING OF
THE MATS.
2. LOOK FOR ANY DEFECTS OR STRUCTURAL PROBLEMS REGULARLY.
3. MATS WHICH BECOME COVERED WITH SOILS OR CONSTRUCTION DEBRIS SHOULD BE CLEANED
AND THE MATERIALS REMOVED AND DISPOSED OF IN AN UPLAND LOCATION.
4. THE MATERIAL SHOULD NOT BE SCRAPED AND SHOVELED INTO THE RESOURCE AREA.
5. MATS WHICH BECOME IMBEDDED MUST BE RESET OR LAYERED TO PREVENT MUD FROM
COVERING THEM OR WATER PASSING OVER THEM.
REMOVAL NOTES:
1. MATS SHOULD BE REMOVED BY "BACKING" OUT OF THE SITE, REMOVING THEM ONE AT A TIME.
ANY RUTTING OR SIGNIFICANT INDENTATIONS IDENTIFIED DURING MAT REMOVAL SHOULD BE
REGRADED IMMEDIATELY, TAKING CARE NOT TO COMPACT SOILS.
2. CROSSINGS SHOULD BE INSPECTED FOLLOWING MAT REMOVAL TO DETERMINE THE LEVEL OF
RESTORATION REQUIRED.
3. SPECIAL PRECAUTIONS SHOULD BE TAKEN TO PROMPTLY STABILIZE AREAS OF DISTURBED SOIL
NEAR WETLANDS AND STREAMS. MATTED AREAS WITHIN WETLANDS SHALL BE RESTORED TO
THEIR ORIGINAL CONDITION AND ELEVATION. THIS MAY INVOLVE NATURAL REVEGETATION FROM
EXISTING ROOT AND SEED STOCK OF NATIVE PLANT SPECIES. CONDITIONS MAY WARRANT
PLANTING AND THE BROADCAST OF A WETLAND SEED MIX OVER THE MATTED AREA TO
SUPPLEMENT THE EXISTING SEED AND RESTOCK. SEED MIXES AND VEGETATION SHALL CONTAIN
ONLY PLANS SPECIES NATIVE TO THE AREA. THE USE OF MULCH IN WETLANDS SHALL CONSIST
OF WEED -FREE MULCH TO MITIGATE THE RISK OF THE SPREAD OF INVASIVE PLANT SPECIES.
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SEAL • _
04550
'/1/IIIIIII �065/11/2022
ISSUE
ADDRESS CITY OF WINSTON-SALEM COMMENTS; ADD PHASE 2
ADDRESS CITY OF WINSTON SALEM COMMENTS
ADDRESS CITY OF WINSTON SALEM COMMENTS
♦
m
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CO
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CO
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DATE
05/06/2021
02/01/2022
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BHR LAND HOLDINGS, LLC
4389 INDIAN TRAIL FAIRVIEW RD
♦
INDIAN TRAIL, NC 28079
SILT SACK INLET PROTECTION
STONE SILT FENCE OUTLET
TIMBER MAT CROSSING
Sheet
C-6. 7