20190432 Ver 1_More Info Received_20190515

Homewood, Sue
From: Mularski, Eric <[e-mail]>
Sent: Wednesday, May 15, 2019 2:49 PM
To: Homewood, Sue; [e-mail]
Cc: Vena, Dave; DePalma, Alicia ([e-mail]); Rogers, Carl; Teresa
Andrews
Subject: RE: [External] RE: Request for Additional Information; PNG Pleasant Garden Looping
Project, Guilford Co.; SAW -2018-02075 (UNCLASSIFIED)
Attachments: C -330-0001041-C-330-0001041 REVISED.PDF
External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
[e-mail]
Sue,
We appreciate your review and comments. Please see our responses below.
NCDWR Comment 1.: The application document indicated that the permanent maintained easement is proposed
as 50 feet wide, however Condition 1.5 of Water Quality General Certification #4133 states that permanent
maintained corridor for gas utility lines shall not exceed 30 feet wide. I do not see that you have specifically
requested an exemption to this Condition, so if that is your intent, please clarify that in the response to this
request. Please not the PNG has previously requested and been approved for 30 -foot permanent easement on
multiple projects, therefore we would need clear justification for why a greater maintenance corridor through
wetlands and streams is required for this specific line.
PNG Response: PNG will comply with Condition 1.5 of Water Quality General Certification #4133. The 50 -foot
permanent easement shown on the construction plans illustrates the land easement obtained, not the
permanently maintained ROW. PNG attempts to acquire a minimum of 50 -foot of permanent easement for each
pipeline to ensure adequate land space for future maintenance without having to obtain land rights at a later
date.
NCDWR Comment 2. The plan view of the culvert replacement of AR -005 indicated that the proposed new
culvert alignment may have the potential to cause downstream erosion and water quality concerns as the outlet
appears to be within a sharp channel meander and out let velocity would be directed towards a stream bank.
Please review this alignment in more detail and provide additional information to support the correct alignment,
or realign the culvert out to better match the natural stream channel.
PNG Response: The stream line on the culvert plans in the PCN submittal was based from GPS points collected in
the field. The centerline of stream was re -digitized using contours and elevations collected during the land
survey which provides a more accurate depiction of the existing stream channel. The downstream flared end
section will be oriented to discharge flow in the channel thalweg to promote flow and to prevent the potential
for stream bank erosion. Attached is the revised plan sheet that illustrates the existing stream and proposed
culvert replacement (see attached C-330-0001041).
After your review, please don't hesitate to contact me should you require additional information to process the Section
401 Water Quality Certification for this project.
Thank you,

Eric Mularski, Pws
D 704-973-6878 M 704-806-1521
hdrinc.com/follow-us
From: Homewood, Sue [mailto:[e-mail]]
Sent: Wednesday, May 8, 2019 11:20 AM
To: Mularski, Eric <Eric.Mularski @hdrinc.com>; David. [e-mail]
Cc: Vena, Dave <[e-mail]>; DePalma, Alicia (Alicia. [e-mail])
<[e-mail]>; Rogers, Carl <[e-mail]>; Teresa Andrews
<[e-mail]>
Subject: RE: [External] RE: Request for Additional Information; PNG Pleasant Garden Looping Project, Guilford Co.; SAW -
2018 -02075 (UNCLASSIFIED)
Eric,
Thank you for copying me on your response to the USACE. I reviewed the project and have a couple other items that
will need to be addressed before I can issue a 401 approval. Please see the attached letter requesting more
information.
Thanks,
Sue Homewood
Division of Water Resources, Winston Salem Regional Office
Department of Environmental Quality
336 776 9693 office
336 813 1863 mobile
Sue. [e-mail]
450 W. Hanes Mill Rd, Suite 300
Winston Salem NC 27105
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Mularski, Eric <Eric.Mularski @hdrinc.com>
Sent: Tuesday, May 7, 2019 2:40 PM
To: David. [e-mail]; Homewood, Sue <[e-mail]>
Cc: Vena, Dave <[e-mail]>; DePalma, Alicia (Alicia. [e-mail])
<[e-mail]>; Rogers, Carl <[e-mail]>
Subject: [External] RE: Request for Additional Information; PNG Pleasant Garden Looping Project, Guilford Co.; SAW -
2018 -02075 (UNCLASSIFIED)

HYDROLOGIC & HYDRAULIC SUMMARY
REFERENCE DATA
WATERSHED SCALE TOPOGRAPHY OBTAINED FROM
NORTH CAROLINA SPATIAL DATA DOWNLOAD, 2015.
DATA IS QUALITY LEVEL 2 (QL2). DETAILED FIELD
TOPOGRAPHY PROVIDED BY ENCOMPASS
SERVICES PLLC, 2018.
IDRAINAGE AREA
9.10 AC
COVER TYPE
50% FOREST, GOOD (CN=0.25)
50% MEADOW, GOOD (CN=0.45)
COMPOSITE CN=0.35
■►[O7_1_V_lIIWTATaEl:Lll0ly_1Iwez,Ia [oil]:1
2-YR=3.43 IN
10-YR=4.94 IN
25-YR=5.83 IN
50-YR=6.54 IN
100-YR=7.26 IN
SOILS TABLE
NRCS
SYMBOL
HSG
EnB
C
EnC
C
EnD
C
PEAK RATIONAL RATE
2-YR=5.46 CFS
10-YR=7.87 CFS
25-YR=9.28CFS
50-YR=10.41 CFS
100-YR=11.56 CFS
PIPE DATA
41 LF 30" HDPE @ 6.91 %
EMBEDMENT DEPTH=12-18"
HYDRAULIC DATA
DRAINAGE AREA MAP SCALE IN FEET
0 200 400
Culvert
Discharge
(cfs)
Headwater
Elevation (ft)
Inlet Control
Depth(ft)
Normal Depth
(ft)
Critical Depth
(ft)
Outlet Depth
(ft)
Tailwater
Depth (ft)
Outlet
Velocity (ft/s)
Tailwater
Velocity (ft/s)
5.46
819.23
0.73
0.40
0.54
0.40
0.23
5.34
4.72
6.07
819.29
0.79
0.43
0.57
0.42
0.25
5.63
4.91
6.68
819.36
0.86
0.46
0.61
0.46
0.26
5.74
5.09
7.29
819.42
0.92
0.49
0.65
0.49
0.28
5.92
5.26
7.90
819.48
0.98
0.51
0.68
0.51
0.29
6.08
5.43
8.51
819.54
1.04
0.54
0.71
0.54
0.31
6.24
5.58
9.12
819.59
1.09
0.56
0.74
0.56
0.32
6.40
5.72
9.28
819.61
1.11
0.57
0.75
0.57
0.32
6.43
5.76
10.34
819.71
1.21
0.61
0.80
0.63
0.34
6.52
6.00
10.95
819.77
1.27
0.64
0.83
0.65
0.36
6.64
6.12
11.56
819.83
1.33
0.66
0.86
0.68
0.37
6.73
6.25
16' WIDE ROADWAY I�
VARIABLE
SLOPE VARIABLE SLOPE
CROSS PIPE
ROADWAY CROSS PIPE TYPICAL SECTION
REINFORCED -
EDGE FULL
LENGTH OF END
SECTION AND
TOE PLATE
4"
6" MAX 41
TOE D
6" PLATE
L
SIDE VIEW
SLOPE
R
V AIABLE
PIPE
W
D
PIPE
L
TOE PLATE
NRCS SOILS BOUNDARY
AND TYPE
ROPOSED TEMPORARY
CCESS ROAD AR -005
XISTING 18" CMP CULVERT
ROPOSED FOR REPLACEMENT
✓ITH 30" HDPE CULVERT
END TREATMENT DIMENSIONS
D
L
W
THICK. GAUGE
30"
6'-8"
3'-0"
16 MIN.
ISOMETRIC VIEW
PIPE 4„
D
6" MAX.
` J 6" TOE PLATE
I- W -I
END VIEW
NOTE:
PREFABRICATED STEEL END SECTION AND ALL PARTS
WILL MEET THE REQUIREMENTS OF AASHTO M-218
PIPE FITTING REQUIRED TO
SECURELY HOLD SECTION
PLAN VIEW
1 STEEL END SECTION
SCALE: NTS
830
M
EXISTING GRADE
18" CM
CULVE
PROPOSED
30" HDPE
CENTERLINE OF PROPOSED ROADWAY
CROSS SECTION
SECTION AR005-AR005
HORIZ. SCALE: 1" = 20.00'
VERT. SCALE" 1" = 5.00'
LO
CV
00Qj`Z�
_ \ 30"O 7E IE 817.!
CP
�s � 0
--�,29
830 STREAM 20
837
--- 83
`--
-- 834
836
1
\ EXISTING
UNIMPROVED
ROADWAY
830
823
827 1 pT1+76
� 1 i
1 eb�825
1 �
82S
826
��g25
A
LF " HDPE (PROPOSED)
823
822
RO .2
0+53.17
30" 1 W) IE = 814.75 821
820 820-i
INSTALL FLARED END
2.1- "� SECTION PER DETAIL g19�
1, THIS SHEET (TYP).
820 CONTRACTOR SHALL ^818
21 LF XI ORIENTATE n -
STRUCTURE TO 61
U/S NV: 817.33 DISCHARGE INTO THE
S INV: 816.19 EXISTING DEFINED
2 60 41 STREAM THALWEG.
8 879 d,
o `\ 823
001
v 8
AR -005 CULVERT REPLACEMENT PLAN VIEW
830 830
820 820
SCALE IN FEET
0 20 40
0
ti
II
STA +38.95, EL 824.62
-
Ln
M U
DATE
r r
o0
000
w
DESCRIPTION
APPROVALS
CV � Z
+
�'� DUKE � Piedmont
� ENERGY.:: Natural Gas
COPYRIGHT 2018
0
2Q-
STA 0+22.66, EL 8 24.62C)
A
10/16/2018
30% SUBMITTAL
DRG
30-
CXR
%
2331
DATE
-
INITIALS
N/A
REGIONAL
ENGINEER
B
12/10/2018
60% SUBMITTAL
DRG
EH
M0
ACCOUNT NUMBER
Cfl (D
00
0+00
PROFILE
HORIZ. SCALE: 1" = 20.00'
VERT. SCALE" 1" = 5.00'
0+50
830
820
CONSTRUCTION NOTES
1. WORK SHALL INCLUDE THE REPLACEMENT OF AN EXISTING
18" CMP CULVERT WITH ANEW 30" ADS N12 HDPE (O.A.E.)
CULVERT.
2. PRIOR TO REMOVAL OF EXISTING CULVERT, INSTALL
COFFER DAM AND PUMP AROUND PER DETAIL ES -2 SHEET
C-330-0001034.
3. LIMIT DISTURBANCE OF EXISTING STREAM TO FIFTEEN (15)
FEET UPSTREAM AND DOWNSTREAM OF THE PROPOSED
GRADING LIMITS DEPICTED HEREON.
4. PROPOSED CULVERT SHALL BE EMBEDDED 12-18" BELOW
THE EXISTING STREAM THALWEG AS SHOWN HEREON.
5. CONTRACTOR SHALL PROVIDE ANCILLARY LINEAR
EROSION AND SEDIMENT CONTROL DEVICES SUCH AS SILT
FENCE OR COMPOST FILTER SOCK AT THE STREAM TOP OF
BANKS TO PRECLUDE THE DEPOSITION OF ANY SEDIMENT
INTO THE EXISTING STREAM DURING CONSTRUCTION.
z
-
PROPRIETARY &CONFIDENTIAL ALL RIGHTS RESERVED * DO NOT SCALE THIS DRAWING *USE DIMENSIONS ONLY
PIEDMONT'S NATURAL GAS FACILITY DRAWINGS ARE CONSIDERED CONFIDENTIAL (OM -1095) *DRAWING IS CURRENT ONLY THROUGH THE LATEST REVISED DATE * TO INSURE THERE IS NO RISK OF INAPPROPRIATE DISCLOSURE ALL PREVIOUS PAPER COPIES OF THIS DRAWING MUST BE DESTROYED IN ACCORDANCE WITH RECORDS &INFO. MANAGEMENT (RIM) POLICY 1001
-
-
-
�'
a PROFESSIONALENG/ARCHSTAMP
NO.
DATE
REVISIONS) DESCRIPTION
BY
CHK
APPD
DESCRIPTION
APPROVALS
�'� DUKE � Piedmont
� ENERGY.:: Natural Gas
COPYRIGHT 2018
PLEASANT GARDEN ROAD 12" L00 P I N G PROJECT
AR -005 DETAILS
TOWN OF PLEASANT GARDEN NORTH CAROLINA
�
GREENSBORO RESOURCE CENTER, NORTH CAROLINA
SHEETS DWG SCALE AS SHOWN
� )
DWG DATE 10/1612018 SUPERSEDED
A
10/16/2018
30% SUBMITTAL
DRG
EH
CXR
AREA CODE
2331
DATE
-
INITIALS
N/A
REGIONAL
ENGINEER
B
12/10/2018
60% SUBMITTAL
DRG
EH
CXR
ACCOUNT NUMBER
10700
C
02/01/2019
90% SUBMITTAL
DRG
KAO
CXR
PROJECT NUMBER
0214646
DATE
INITIALS
N/A
MGR TECH
REC&STD
DRAWING NUMBER
PNG C-330-0001041
REVISION
D
D
05/17/2019
ISSUE FOR BID
DRG
JSW
CXR
DRAWING BY
DRG
STATION ID
2-TR-GBO-6118
DATE
INITIALS
N/A
PRINCIPAL
ENGINEER
CHECKER INITIALS
JSW
CIVIL /GREENSBORO /LINE 330 EXTENSION