20200606 Ver 1_Comment_Response_06232020_20200626

3040 NC 42 West; Clayton, NC 27520
P:804-761-2455

June 23, 2020

Mr. Lyle Phillips
Wilmington District – Raleigh Regulatory Field Office
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587

RE: SAW-2020-00684 – Apex West Greenway

Dear Lyle,

Carolina Ecosystems, Inc. on behalf of Wetherill Engineering, is providing the following responses to
each of the comments, as received on May 28, 2020. The comments are listed below in italics, followed
by the associated responses:

• Can you confirm that impact S1 is a permanent (with loss) stream channel impact from
installation of the culvert and that Impact S2 is a permanent (no functional loss) stream channel
impact from stream stabilization? Will the rip rap be placed only along the stream bank or within
the stream channel? If riprap is to be placed within the channel and be considered “no functional
loss” the rip rap should be keyed in/depressed into the stream bed such that the top of the rip rap
is no higher than the stream bed and the profile view should clearly show that. If above-grade
rip rap is proposed in the stream bed due to needed velocity dissipation, clearly describe this in
the PCN and show on the plans.
o The impact proposed at site S1 is a permanent (with loss) stream channel impact from
culvert installation, and the impact at site S2 is a permanent (with no functional loss)
stream channel impact from stream stabilization. The riprap at site S1 would be placed
both along the streambanks, and within the stream channel. All riprap that is proposed to
be placed within the stream channel will be keyed in such that the top of the riprap will
be no higher than the stream bed. An additional profile views of this proposed impact at
site S1 is being provided for consideration.

• Please provide an explanation of the reason for using a culvert at impact S1. For example, why
could this crossing not be achieved by a greenway bridge similar to the proposed wetland
crossings?
o A culvert is proposed at impact site S1 in order to meet ADA requirements when tying
into the existing American Tobacco Trail. The existing channel appears to have been
modified/redirected previously, as it is currently located on top of the approximate five
foot tall embankment associated with the existing American Tobacco Trail ditch. The
restructuring of the existing channel, and addition of the culverts that are proposed,
would allow for the proposed greenway to maintain the necessary slope to remain ADA
compliant while staying within the existing easement that is owned by the Town of Apex.

• Will the riprap at impact S4 be installed so it is keyed in/depressed into the stream bed such that
the top of the rip rap is no higher than the stream bed?
o The riprap proposed at impact site S4 would be keyed into the stream bed so that it is no
higher than the stream bed. Additional profile drawings are being provided as part of this
response.

3040 NC 42 West; Clayton, NC 27520
P:804-761-2455

• Please provide additional details for the installation of the greenway bridge pilings. For example,
if the timber pilings are being installed without the introduction of fill material (concrete, footers,
etc.) then the activity would not be considered a permanent wetland impact. Additionally, it
appears that the installation of the greenway bridges would result in forested wetlands being
converted to herbaceous wetlands resulting in permanent conversion wetland impacts. Please
update the PCN and impacts maps accordingly.
o The proposed timber piles for both greenway bridges are to be installed without the
introduction of associated fill material such as concrete or footers. The construction of
the bridges would result in approximately 0.02 acre of forested wetland being
permanently converted to herbaceous wetlands in these locations. The attached impact
tables and plans have been updated to reflect this change.

• Please provide details for the clearing of the forested wetlands at the greenway bridge locations.
For example, will temporary wetland impacts occur from stumping or grubbing? If temporary
wetland impacts occur, please update the PCN and exhibits accordingly.
o Temporary wetland impacts will be occurring due to hand clearing of trees at Sites 2 and
4 for the construction of the proposed greenway boardwalk, with stumps resulting from
this hand clearing being left in place. The revised impact drawings and tables reflect the
0.02 acre of temporary wetland impact at Site 2 and the 0.01 acre of temporary wetland
impact at Site 4 that will result from tree removal at these locations.

We look forward to your prompt review of these responses and issuance of the permit for this project.
Please don’t hesitate to contact me at [phone] or [e-mail] if you have
questions or need additional information.

Sincerely,
Carolina Ecosystems, Inc.

Robert Crowther
Project Scientist

Cc:
Stephanie Goss, NC Division of Water Resources

Attachments:
- Updated Wetland Impact Table
- Updated Impact Exhibits (Permit Drawing Sheets 1-3)
- Updated Wetland and Surface Water Impact Summary Sheet (Permit Drawing Sheet 4)
- Additional Profile Views of Proposed Structures
Apex West GreenwayJune 20202. Wetland ImpactsSite # Reason Impact Type Type of Wetland Wetland Name Forested Type of Jurisdiction Impact Area (ac)2 Boardwalk Permanent Headwater Forest WC Y Corps 0.022 Hand Clearing Temporary Headwater Forest WC Y Corps 0.024 Boardwalk Permanent Headwater Forest WA Y Corps 0.014 Clearing Temporary Headwater Forest WA Y Corps 0.01Total Temporary Wetland Impact0.03 acreTotal Permanent Wetland Impact0.03 acreTotal Wetland Impact0.06 acre
SITE
PROJECTWAKE COUNTYCHATHAM COUNTY64
REEDY BRANCH
540
SR1163 KELLY RD.SR1160 OLIVE CHAPEL RD.SR1145 RICHARDSON RD.BEAVER CREEK
BEAVER CREEK.DR LEPAHC EVILO - LLIH WEN 1411RS.DR EUCEBRAB XEPA 2611R
SLIAR
T OCCABOT NACIREMA VICINITY MAP
150 OLI
VE CHAPEL RD.CONCEXI
STI
NG 30’ POW
ER EASEM
ENTEXI
STI
NG 30’ PO
W
ER EA
SEM
EN
TEXISTING 40’ TOWN OF CARY UTILITY & PIPELINE EASEMENT(IN
SI
DE R/
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)
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ULTI-USE EASEM
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MULTI-USE EASEMENT
EXISTING 20’ TOWN OF APEX
MON
CONC
EIP
EIP
EIP
R/W MON
R/W MON
MON
CONC SOI
LGRAVELNC GRID
NAD 83 NA 2011
WOODS
WOODS
WOODS
SI
DEW
ALK EASEM
ENTEX
I
STI
NG R/
W
EX
I
STIN
G R/
W
EXI
STI
NG R/
WAMERICAN TOBACCO TRAILAPPROXIM
ATE EXI
STI
NG R/
W (CALCULATED)APPROXIM
ATE EXI
STI
NG R/
W
(CALCULATED)
R/W MON
WIDTH VARIES2
0.0
0’
MULTI-USE EASEMENT
EXISTING 20’ TOWN OF APEX
20.00’
MULTI-USE EASEMENT
EXISTING 20’ TOWN OF APEX
(FROM APEX GI
S
I
NFO)15+00F
T
10
0
2 02FT10F
T
10
0
2
SHEET 1 OF 4
PERMIT DRAWING
PROJECT DATA
-L- STA. 11+70.00
BEGIN BOARDWALK
-L- STA. 12+80.00
END BOARDWALK
-L- STA. 15+74.00
BEGIN BOARDWALK
-L- STA. 16+44.00
END BOARDWALK
TOBACCO TRAIL
TIE TO AMERICAN
-L- STA. 10+08.00
BEGIN PROJECT
MULTI-USE PATH
TIE TO EXISTING
-L- STA. 17+00.00
END PROJECT
SITE 1
SITE 4
SITE 3
SITE 2
REVISIONS:
NO.DATE
PLANS PREPARED BY:
ENGINEERING
ETHERILL
DESCRIPTION
Bus: 919 851 8077 Fax: [phone]
License No. F-0377
1223 Jones Franklin Rd. Raleigh, N.C. 27606
PLANS PREPARED FOR:
APEX WEST GREENWAY
TO AMERICAN TOBACCO TRAIL
OLIVE CHAPEL ROAD
CONNECTION FROM
919.372.7468
APEX, NC 27502
PO BOX 250
PARKS AND GREENWAY PLANNER
ANGELA REINCKE
PROJECT CONTACT:
Apex, NC 27502
73 Hunter Street
TOWN OF APEX
WEI PROJECT NO.:
20326.01
UNLESS ALL SIGNATURES COMPLETED
DOCUMENT NOT CONSIDERED FINAL
ENGINEER
ROADWAY DATE: MARCH 4, 2020
the certifications signed on the cover sheet of these construction plans.
The signatures affixed below certify that this sheet has been reviewed and approved solely per
Date
Date
Date
Date
Date
Date
Date
Date
Date
Date
Building Inspections
WR - Utility Engineering
PW - Transportation
Electric
WR - S&E
WR - Stormwater
Planning
Planning - Transportation
Fire
Parks, Recreation & Cultural Res.
ENGINEER
HYDRAULICS
PRELIMINARY PLANS
DO NOT USE FOR CONSTRUCTION
PRELIMINARY PLANS
DO NOT USE FOR CONSTRUCTION

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NORTH CAROLINA
TOWN OF APEX
APEX WEST GREENWAY
COVER SHEET
GRADING, PAVING, STRUCTURE, DRAINAGE, & EROSION CONTROL
TYPE OF WORK:
FROM OLIVE CHAPEL RD. TO AMERICAN TOBACCO TRAIL
LOCATION:
CONSTRUCTION PLANS FOR:
WETLAND AND SURFACE WATER IMPACTS PERMIT
SITE 1
SITE 2
SITE 3
SITE 4
herbaceous beneath the boardwalk.
Wetland converted from wooded to
Trees cleared with the easement.15+00TIE TO EXIST TRAIL
-L- STA. 10+08.00
BEGIN PROJECT
TIE TO EXISTING DITCH
-D- STA. 10+00.00
BEGIN CONTRUCTION
TIE TO EXISTING DITCH
-D- STA. 12+00.00
END CONTRUCTION
TIE TO EXIST TRAIL
-L- STA. 17+00.00
END PROJECT
-L- STA. 15+74.00
BEGIN BOARDWALK
-L- STA. 16+44.00
END BOARDWALK
F
T
10
0
2 02FT10F
T
10
0
2
-L- STA. 12+80.00
END BOARDWALK
-L- STA. 11+70.00
BEGIN BOARDWALK
2ft INSIDE EASEMENT.
COMBO SILT/TREE PROTECT. FENCE
INSTALL TREE PROTECT. FENCE OR
SEE DETAIL ON SHEET 6
-L- STA. 10+20, 8’ LT
YIELD SIGN
SEE DETAIL ON SHEET 6
-L- STA. 14+20.00
INSTALL BOLLARDS
SEE DETAIL ON SHEET 6
-L- STA. 15+05.00
INSTALL BOLLARDS
SEE DETAIL ON SHEET 6
-L- STA. 14+15, 8’ RT
INTERSECTION SIGN
SEE DETAIL ON SHEET 6
-L- STA. 15+50, 8’ LT
INTERSECTION SIGN
SEE DETAIL ON SHEET 6
ORIENT 90 TO DRIVEWAY
-L- STA. 14+72, 15’ RT
PRIVATE PROPERTY SIGN
SHEET 2 OF 4
PERMIT DRAWING
HC HC
CLEARING
DENOTES HAND
DI
WITH FLARED END SECTIONS
18" RCP-III
SEE DETAIL A
SEE DETAIL D
SEE DETAIL B
RETAIN
REMOVE
SEE DETAIL D
SEE DETAIL C
WITH FLARED END SECTIONS
30" RCP-III
SEE DETAIL SHEET EC-4
CLASS I RIP RAP
10’ L X 15’ W X 15" D
OUTLET PROTECTION
SEE DETAIL SHEET EC-4
CLASS B RIP RAP
6’ L X 9’ W X 12" D
OUTLET PROTECTION
SEE DETAIL SHEET EC-4
CLASS B RIP RAP
5’ L X 7.5’ W X 12" D
OUTLET PROTECTION
SECTION AT OUTLET
15" RCP-IV WITH FLARED END
EXISTING MULTI-USE PATH
END OF EXISTING MULTI-USE PATH
Slope
Ditch
Front
Geotextile
GROUND
NATURAL
SLOPE
FILL
REVISIONS:
NO.DATE
PLANS PREPARED BY:
ENGINEERING
ETHERILL
DESCRIPTION
Bus: 919 851 8077 Fax: [phone]
License No. F-0377
1223 Jones Franklin Rd. Raleigh, N.C. 27606
PLANS PREPARED FOR:
APEX WEST GREENWAY
TO AMERICAN TOBACCO TRAIL
OLIVE CHAPEL ROAD
CONNECTION FROM
919.372.7468
APEX, NC 27502
PO BOX 250
PARKS AND GREENWAY PLANNER
ANGELA REINCKE
PROJECT CONTACT:
Apex, NC 27502
73 Hunter Street
TOWN OF APEX
WEI PROJECT NO.:
20326.01
UNLESS ALL SIGNATURES COMPLETED
DOCUMENT NOT CONSIDERED FINAL
ENGINEER
ROADWAY DATE: MARCH 4, 2020
the certifications signed on the cover sheet of these construction plans.
The signatures affixed below certify that this sheet has been reviewed and approved solely per
Date
Date
Date
Date
Date
Date
Date
Date
Date
Date
Building Inspections
WR - Utility Engineering
PW - Transportation
Electric
WR - S&E
WR - Stormwater
Planning
Planning - Transportation
Fire
Parks, Recreation & Cultural Res.
ENGINEER
HYDRAULICS
PRELIMINARY PLANS
DO NOT USE FOR CONSTRUCTION
PRELIMINARY PLANS
DO NOT USE FOR CONSTRUCTION

A
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P15" HDPEN 1803’23" E271.03’N 6034’46" E
390.29’N 2001’07" E94.30’N 8932’22" E
364.47’
N 8932’22" E
115.10’S 1209’04" W264.90’OLI
VE CHAPEL RD.CONCN 0244’33" E216.38’SSMH
SSMH
SSMH
TOP=262.35’
TOP=250.26’
TOP=246.77’EXI
STI
NG 30’ POW
ER EASEM
ENTEXI
STI
NG 30’ POW
ER EASEM
ENTEXISTING 40’ TOWN OF CARY UTILITY & PIPELINE EASEMENT(I
NSI
DE R/
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)
M
ULTI-USE EASEM
ENTEXI
STI
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N OF APEX
M
ULTI-USE EASEM
ENTEXI
STI
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N
O
F APEX
MULTI-USE EASEMENT
EXISTING 20’ TOWN OF APEX
MON
CONC
EIP
EIP
EIP
R/W MON
R/W MON
MON
CONC 36"
W
OOD SPLI
T RAI
LSOI
LGRAVELNC GRID
NAD 83 NA 2011
WOODS
WOODS
WOODS
SI
DEW
ALK EASEM
ENTEXI
STI
NG R/
W
EXI
STI
NG R/
W
EXI
STI
NG R/
W
JV OWNER, LLC
RREF II-SH RICHARDSON
JV OWNER, LLC
RREF II-SH RICHARDSON
WAKE COUNTY
RACHEL B. PRICE &
WAKE COUNTY
OF AMERICA
UNITED STATESAMERICAN TOBACCO TRAILAPPROXI
M
ATE EXI
STI
NG R/
W
(CALCULATED)APPROXI
M
ATE EXI
STI
NG R/
W
(CALCULATED)
R/W MON
SADDLEBROOK SUBDIVISIONWIDTH VARIES2
0.0
0’
MULTI-USE EASEMENT
EXISTING 20’ TOWN OF APEX
20.00’
MULTI-USE EASEMENT
EXISTING 20’ TOWN OF APEX
(FROM APEX GI
S
I
NFO)
0
1"=30’
1530 30 60
EXISTING CONDITIONS
4
( Not to Scale)
STANDARD BASE DITCH
DETAIL A
B= 2.0 Ft.
Max. d= 2.0 Ft.
Min. D= 2.0 Ft.
*When B is < 6.0’
( Not to Scale)
STANDARD BASE DITCH
DETAIL B
B= 2.0 Ft.
Min. D= 1.0 Ft.
FROM STA 10+00. TO STA. 10+85 -D-
FROM STA. 11+08 TO STA. 12+00 -D-
Flatter4:1 or
D
( Not to Scale)
SPECIAL CUT DITCH
FROM STA. 15+00 TO STA. 15+25 -L- RT
DETAIL C
Min. D= 0.5 Ft.
Ground
Natural
B
2:12:1D
Ground
Natural
Ground
Natural
2:12:1D
B
d
Ground
Natural
Ground
Natural
Type of Liner= CLASS I Rip-Rap
Flatter4:1 or
S S SURFACE WATER
DENOTES IMPACTS IN
TS TS
IMPACTS IN SURFACE WATER
DENOTES TEMPORARY
T T FILL IN WETLAND
DENOTES TEMPORARYRR
WETLANDS
DENOTES CONVERTED
( Not to Scale)
TOE PROTECTION
d
FLATTER2:1 ORDETAIL D
b
b= 5.0 Ft.
d= 1.0 Ft.
Type of Liner= COIR FIBER MATTING
FROM STA. 15+25 TO STA. 15+50 -L- RT
FROM STA. 11+50 TO STA. 11+75 -L- RT
150 N 1803’23" E271.03’N 6034’46" E
390.29’N 2001’07" E94.30’N 8932’22" E
364.47’
N 8932’22" E
115.10’S 1209’04" W264.90’OLI
VE CHAPEL RD.CONCN 0244’33" E216.38’SSMH
SSMH
SSMH
TOP=262.35’
TOP=250.26’
TOP=246.77’EXI
STI
NG 30’ POW
ER EASEM
ENTEXI
STI
NG 30’ POW
ER EASEM
ENTEXISTING 40’ TOWN OF CARY UTILITY & PIPELINE EASEMENT(I
NSI
DE R/
W
)
M
ULTI-USE EASEM
ENTEXI
STI
NG TOW
N OF APEX
M
ULTI-USE EASEM
ENTEXI
STI
NG TOW
N
O
F APEX
MULTI-USE EASEMENT
EXISTING 20’ TOWN OF APEX
MON
CONC
EIP
EIP
EIP
R/W MON
R/W MON
MON
CONC 36"
W
OOD SPLI
T RAI
LSOI
LGRAVELNC GRID
NAD 83 NA 2011
WOODS
WOODS
WOODS
GPS-2
SI
DEW
ALK EASEM
ENTEXI
STI
NG R/
W
EXI
STI
NG R/
W
EXI
STI
NG R/
W
JV OWNER, LLC
RREF II-SH RICHARDSON
JV OWNER, LLC
RREF II-SH RICHARDSON
WAKE COUNTY
RACHEL B. PRICE &
WAKE COUNTY
OF AMERICA
UNITED STATESAMERICAN TOBACCO TRAILSB
WC-01
WC-02
WC-03
WC-04
WC-101
WC-102
WC-103
WC-104
WC-105
WB-03
WB-02
SA
WB-01
SA
WA-10
WA-09
WA-06
WA-07
WA-08
WA-02
WA-03
WA-04 WA-11
WA-12
WA-13
WA-01
WA-14
WA-15
144
252.19
138
248.36
WA-05APPROXI
M
ATE EXI
STI
NG R/
W
(CALCULATED)APPROXI
M
ATE EXI
STI
NG R/
W
(CALCULATED)
R/W MON
SADDLEBROOK SUBDIVISIONWIDTH VARIES2
0.0
0’
MULTI-USE EASEMENT
EXISTING 20’ TOWN OF APEX
20.00’
MULTI-USE EASEMENT
EXISTING 20’ TOWN OF APEX
(FROM APEX GI
S
I
NFO)24"
R
C
P15" HDPEREVISIONS:
NO.DATE
PLANS PREPARED BY:
ENGINEERING
ETHERILL
DESCRIPTION
Bus: 919 851 8077 Fax: [phone]
License No. F-0377
1223 Jones Franklin Rd. Raleigh, N.C. 27606
PLANS PREPARED FOR:
APEX WEST GREENWAY
TO AMERICAN TOBACCO TRAIL
OLIVE CHAPEL ROAD
CONNECTION FROM
919.372.7468
APEX, NC 27502
PO BOX 250
PARKS AND GREENWAY PLANNER
ANGELA REINCKE
PROJECT CONTACT:
Apex, NC 27502
73 Hunter Street
TOWN OF APEX
WEI PROJECT NO.:
20326.01
UNLESS ALL SIGNATURES COMPLETED
DOCUMENT NOT CONSIDERED FINAL
ENGINEER
ROADWAY DATE: MARCH 4, 2020
the certifications signed on the cover sheet of these construction plans.
The signatures affixed below certify that this sheet has been reviewed and approved solely per
Date
Date
Date
Date
Date
Date
Date
Date
Date
Date
Building Inspections
WR - Utility Engineering
PW - Transportation
Electric
WR - S&E
WR - Stormwater
Planning
Planning - Transportation
Fire
Parks, Recreation & Cultural Res.
ENGINEER
HYDRAULICS
PRELIMINARY PLANS
DO NOT USE FOR CONSTRUCTION
PRELIMINARY PLANS
DO NOT USE FOR CONSTRUCTION

A
NILO
RAC HTRO
NLA
NOISSEFORP
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250
255
255
255
260SITE 1
SITE 2
SITE 3
SITE 4
herbaceous beneath the boardwalk.
Wetland converted from wooded to
Trees cleared with the easement.245245245245245245
245
245245245245250250250250250250250250250250250250250
250
250
255255255255255255255255255260260260260260260260260260265265270270SHEET 3 OF 4
PERMIT DRAWING
HC HC
CLEARING
DENOTES HAND
TIE TO EXIST TRAIL
-L- STA. 10+08.00
BEGIN PROJECT
TIE TO EXISTING DITCH
-D- STA. 10+00.00
BEGIN CONTRUCTION
TIE TO EXISTING DITCH
-D- STA. 12+00.00
END CONTRUCTION
TIE TO EXIST TRAIL
-L- STA. 17+00.00
END PROJECT
-L- STA. 15+74.00
BEGIN BOARDWALK
-L- STA. 16+44.00
END BOARDWALK
-L- STA. 12+80.00
END BOARDWALK
-L- STA. 11+70.00
BEGIN BOARDWALK
2ft INSIDE EASEMENT.
COMBO SILT/TREE PROTECT. FENCE
INSTALL TREE PROTECT. FENCE OR
SEE DETAIL ON SHEET 6
-L- STA. 10+20, 8’ LT
YIELD SIGN
SEE DETAIL ON SHEET 6
-L- STA. 14+20.00
INSTALL BOLLARDS
SEE DETAIL ON SHEET 6
-L- STA. 15+05.00
INSTALL BOLLARDS
SEE DETAIL ON SHEET 6
-L- STA. 14+15, 8’ RT
INTERSECTION SIGN
SEE DETAIL ON SHEET 6
-L- STA. 15+50, 8’ LT
INTERSECTION SIGN
SEE DETAIL ON SHEET 6
ORIENT 90 TO DRIVEWAY
-L- STA. 14+72, 15’ RT
PRIVATE PROPERTY SIGN
DI
WITH FLARED END SECTIONS
18" RCP-III
SEE DETAIL A
SEE DETAIL D
SEE DETAIL B
RETAIN
REMOVE
SEE DETAIL D
SEE DETAIL C
WITH FLARED END SECTIONS
30" RCP-III
SEE DETAIL SHEET EC-4
CLASS I RIP RAP
10’ L X 15’ W X 15" D
OUTLET PROTECTION
SEE DETAIL SHEET EC-4
CLASS B RIP RAP
6’ L X 9’ W X 12" D
OUTLET PROTECTION
SEE DETAIL SHEET EC-4
CLASS B RIP RAP
5’ L X 7.5’ W X 12" D
OUTLET PROTECTION
SECTION AT OUTLET
15" RCP-IV WITH FLARED END
EXISTING MULTI-USE PATH
END OF EXISTING MULTI-USE PATH
Slope
Ditch
Front
Geotextile
GROUND
NATURAL
SLOPE
FILL
15+00F
T
10
0
2 02FT10F
T
10
0
2
0
1"=30’
1530 30 60
EXISTING CONDITIONS
4
( Not to Scale)
STANDARD BASE DITCH
DETAIL A
B= 2.0 Ft.
Max. d= 2.0 Ft.
Min. D= 2.0 Ft.
*When B is < 6.0’
( Not to Scale)
STANDARD BASE DITCH
DETAIL B
B= 2.0 Ft.
Min. D= 1.0 Ft.
FROM STA 10+00. TO STA. 10+85 -D-
FROM STA. 11+08 TO STA. 12+00 -D-
Flatter4:1 or
D
( Not to Scale)
SPECIAL CUT DITCH
FROM STA. 15+00 TO STA. 15+25 -L- RT
DETAIL C
Min. D= 0.5 Ft.
Ground
Natural
B
2:12:1D
Ground
Natural
Ground
Natural
2:12:1D
B
d
Ground
Natural
Ground
Natural
Type of Liner= CLASS I Rip-Rap
Flatter4:1 or
S S SURFACE WATER
DENOTES IMPACTS IN TS TS
IMPACTS IN SURFACE WATER
DENOTES TEMPORARY
T T FILL IN WETLAND
DENOTES TEMPORARY
( Not to Scale)
TOE PROTECTION
d
FLATTER2:1 ORDETAIL D
b
b= 5.0 Ft.
d= 1.0 Ft.
Type of Liner= COIR FIBER MATTING
FROM STA. 15+25 TO STA. 15+50 -L- RT
FROM STA. 11+50 TO STA. 11+75 -L- RT
R R
WETLANDS
DENOTES CONVERTED
Permanent Hand Existing Existing
Wetlands Temp. Excavation Mechanized Clearing Permanent Temp. Channel Channel Natural
Site Station Structure Impacts Fill In in Clearing in SW SW Impacts Impacts Stream
No.(From/To)Size / Type (Converted)Wetlands Wetlands in Wetlands Wetlands impacts impacts Permanent Temp.Design
(ac)(ac)(ac)(ac)(ac)(ac)(ac)(ft)(ft)(ft)
1 -L- 10+39 Channel Stabilization 0.014 155
30" RCP 0.002 25
2 -L- 11+75 to 12+75 20x 7.5" timber piles 0.023 0.023
3 -L- 15+00 LT RR outlet/Pipe Removal 0.001 0.001 10 10
4 -L- 15+70 to 16+40 9x 7.5" timber piles 0.010 0.006
TOTALS*:0.03 0.01 0.00 0.00 0.02 0.02 0.00 190 10 0
*Rounded totals are sum of actual impacts
NOTES:
Revised 2018 Feb SHEET 4 OF 4
WETLAND AND SURACE WATER IMPACTS SUMMARY
SURFACE WATER IMPACTSWETLAND IMPACTS
DIVISION OF HIGHWAYS
forested wetlands to herbaceous wetlands. Additionally, there is approximately 4 sqft additional temporary impact for the timber piles.
6/9/2020
Wake Co.
NC DEPARTMENT OF TRANSPORTATION
Apex Greenway
SITE 2: Boardwalk footprint impacts include temporary, HC impacts for stumping and grubbing, and permanent impacts for conversion of
forested wetlands to herbaceous wetlands. Additionally, there is approximately 7 sqft additional temporary impact for the timber piles.
SITE 4: Boardwalk footprint impacts include temporary impacts for stumping and grubbing, and permanent impacts for conversion of