20190828 Ver 2_PCN Form Submission_20200131

DWR
mrlslon of Water Resources
Pre -Construction Notification (PCN) Form
September 29, 2018 Ver 3
Initial Review
Has this project met the requirements for acceptance in to the review process?*
r Yes
r No
Is this project a public transportation project?*
C Yes r No
Change only if needed.
BIMS # Assigned
20190828
Is a payment required for this project?*
r No payment required
r Fee received
r Fee needed - send electronic notification
Reviewing Office *
Raleigh Regional Office - [phone]
Information for Initial Review
1a. Name of project:
DENC T-030 Pipeline Project
1a. Who is the Primary Contact?*
Joey Lawler, PWS
1b. Primary Contact Email:*
[e-mail]
Date Submitted
1/31/2020
Nearest Body of Water
Neuse River
Basin
Neuse
Water Classification
C, NSW
Site Coordinates
Latitude: Longitude:
35.871156-78.4354360
A. Processing Information
County (or Counties) where the project is located:
Franklin
Wake
Is this project a public transportation project?*
r Yes r No
1a. Type(s) of approval sought from the Corps:
W Section 404 Permit (wetlands, streams and waters, Clean Water Act)
r Section 10 Permit (navigable waters, tidal waters, Rivers and Harbors Act)
1b. What type(s) of permit(s) do you wish to seek authorization?
Version#*
2
What amout is owed?*
r $240.00
r $570.00
Select Project Reviewer*
Stephanie Goss:eads\szgoss
1c. Primary Contact Phone:*
[phone]
U

W Nationwide Permit (NWP)
r Regional General Permit (RGP)
r Standard (IP)
1c. Has the NWP or GP number been verified by the Corps?
r Yes r No
Nationwide Permit (NWP) Number: 12 - Utility Lines
NWP Numbers (for multiple NWPS):
1d. Type(s) of approval sought from the DWR:
W 401 Water Quality Certification - Regular
r Non-404 Jurisdictional General Permit
r Individual Permit
F- 401 Water Quality Certification - E)press
P Riparian Buffer Authorization
le. Is this notification solely for the record because written approval is not required?
For the record only for DWR 401 Certification:
For the record only for Corps Permit:
1f. Is this an after -the -fact permit application?*
r Yes r No
1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r Yes r No
1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r Yes r No
Acceptance Letter Attachment
1h. Is the project located in any of NC's twenty coastal counties?
r Yes r No
1j. Is the project located in a designated trout watershed?
r Yes r No
B. Applicant Information
1d. Who is applying for the permit?
R Owner r Applicant (other than owner)
le. Is there an Agent/Consultant for this project?*
r Yes r No
2. Owner Information
2a. Name(s) on recorded deed:
DENC is the easement owner. Property owner list accompanied the original submittal.
2b. Deed book and page no.:
2c. Responsible party:
Dominion Energy North Carolina
2d.Address
Street Address
800 Gaston Road
Address tine 2
city
Gastonia
Postal / Zip 0ode
28056
2e. Telephone Number:
[phone]
2g. Email Address:*
[e-mail]
State / Rwince / Ifgion
NC
Country
USA
2f. Fax Number
r- Yes r No
r Yes r No
4. Agent/Consultant (if applicable)

4a. Name:
,bey Lawler, PWS
4b. Business Name:
S&ME, Inc.
4c.Address
Street Address
9751 Southern Pine Blvd
Address Line 2
City
Charlotte
Postal / Zip Code
28273
4d. Telephone Number:
[phone]
4f. Email Address:*
[e-mail]
Agent Authorization Letter*
DENC T30 Signed Agent Authorization Form.pdf
State / Province / F bgion
NC
Country
USA
4e. Fax Number:
469.79KB
C. Project Information and Prior Project History C^U
1. Project Information
1b. Subdivision name:
(if appropriate)
1c. Nearest municipality/ town:
Knightdale
2. Project Identification
2a. Property Identification Number:
See Owner List provided with original
submittal.
2c. Project Address
Street Address
See accompanying information
Address Line 2
See accompanying information
City
See accompanying information
Postal / Zip Code
See accompanying information
3. Surface Waters
3a. Name of the nearest body of water to proposed project:*
Neuse River
3b. Water Resources Classification of nearest receiving water:*
C; NSW
3c. What river basin(s) is your project located in?*
Neuse
3d. Please provide the 12-digit HUC in which the project is located.
030202011103
4. Project Description and History
2b. Property size:
Slate / Province / legion
NC
Country
USA
4a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application:*
A description of existing conditions and general land use in the project vicinity was provided in the original submittal and accompanying cover letter.
4b. Have Corps permits or DWR certifications been obtained for this project (including all prior phases) in the past?*
r Yes r No r Unknown
4c. If yes, please give the DWR Certification number or the Corps Action ID (exp. SAW-0000-00000).
SAW No. 2019-006595 and DWR No. 19-0828
Project History Upload

DWR Permit Approval Letter.pdf
SAW-2019-00695 signed NWP Verfiication Letter.pdf
3.6MB
803.09KB
4d. Attach an 8 1/2 X 11 excerpt from the most recent version of the USGS topographic map indicating the location of the project site. (for DWR)
Topo Exhibit.pdf
684.93KB
4e. Attach an 8 1/2 X 11 excerpt from the most recent version of the published County NRCS Soil Survey map depicting the project site. (for DWR)
Soil Survey Scan.pdf 274.29KB
4f. List the total estimated acreage of all existing wetlands on the property:
None within area of proposed modification.
4g. List the total estimated linear feet of all existing streams on the property:
226 LF in area of proposed modification
4h. Explain the purpose of the proposed project:*
The proposed project involves construction of approximately 38 miles of 20-inch diameter natural gas pipeline that will extend DENC's existing T-30 high-pressure natural gas pipeline.
The proposed pipeline crossing of the Neuse River has been designed as an horizontal direction drill (HDD). However, since the time that the original permit authorizations were issued,
DENC has selected a construction contractor (Latex, Inc.) who has had an opportunity to assess the proposed HDD Plan and the proposed crossing location. It has been determined
that in the event of complete HDD failure, as defined by the Project's Inadvertent Release Plan (included with the information submitted online), permit authorization to install the pipe by
conventional "dry" open cut methods should be pursued as a contingency.
41. Describe the overall project in detail, including indirect impacts and the type of equipment to be used:*
This contingency vdll involve a staged, temporary AquaDam system installation to create a dry workspace in the river, and the pipeline will be installed in a narrowtrench excavated
within the bed of the river. Please refer to the drawings, construction sequence and additional information provided with the online submittal.
4j. Please upload project drawings for the proposed project.
271929-34-300_RB.pdf 408.88KB
271929-34-300-301.pdf 367.68KB
271929-34-300-302.pdf 374.04KB
5. Jurisdictional Determinations
5a. Have the wetlands or streams been delineated on the property or proposed impact areas?*
r Yes r No 6 Unknown
Comments:
See attached Pre -JD letter
5b. If the Corps made a jurisdictional determination, what type of determination was made?*
r Preliminary r Approved r Not Verified r Unknown r N/A
Corps AID Number:
SAW 2019-006595
5c. If 5a is yes, who delineated the jurisdictional areas?
Name (if known): Joey Lawler, PWS / Walter Cole, LLS / Ashley Bentz, PWS
Agency/Consultant Company: S&ME
Other:
5d. List the dates of the Corp jurisdiction determination or State determination if a determination was made by the Corps or DWR
September 20, 2019
5d1. Jurisdictional determination upload
SAW-2019-00695 signed PJD.pdf 7.26MB
DENC T-030 Buffer Approval Letters.pdf 9.84MB
6. Future Project Plans
6a. Is this a phased project?*
r Yes r No
Are any other NWP(s), regional general permit(s), or individual permits(s) used, or intended to be used, to authorize any part of the proposed project or related activity?
N/A
D. Proposed Impacts Inventory
1. Impacts Summary
la. Where are the impacts associated with your project? (check all that apply):
r" Wetlands W Streams -tributaries W Buffers
r Open Waters F Pond Construction
3. Stream Impacts

3a. Reason for impact (?) 3b.lmpact type * 3c. Type of impact* 3d. S. name * 3e. Stream Type * 3f. Type of 3g. S. width * 3h. Impact
(?) Jurisdiction* length*
fl
Dry Open Cut Contingency Temporary 6ccavation Neuse River Perennial�J Both 120 226
Average (feet) (lir�rfeet)
31. Total jurisdictional ditch impact in square feet
0
31. Total permanent stream impacts:
31. Total temporary stream impacts:
0
226
3i. Total stream and ditch impacts:
226
3j. Comments:
See revised impact drawing (61 rev).
6. Buffer Impacts (for DWR)
6a. Project is in which protect basin(s)?
Check all that apply.
N7 Neuse
r Tar -Pamlico
r Catawba
r Randleman
r Goose Creek
f Jordan Lake
r Other
6b. Impact Type 6c. Per or Temp 6d. Stream name 6e. Buffer mitigation required? 6f. Zone 1 impact 6g. Zone 2 impact
Temporary clearing for workspace
T
Neuse River
No
13,146
6,771
6h. Total buffer impacts:
Zone 1 Zone 2
Total Temporary impacts: 13,146.00 6,771.00
Zone 1
Zone 2
Total Permanent impacts: 0.00
0.00
Zone 1
Zone 2
Total combined buffer impacts: 13,146.00
6,771.00
61. Comments:
See revised impact drawing (137rev)
Supporting Documentation
61 _Wetland ImpactMaps-NeuseRiverCut. pdf
137_BufferlmpactDetails Ne use RiverCut. pdf
E. Impact Justification and Mitigation
1. Avoidance and Minimization
2.03MB
336.55KB
la. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project:
Crossing has been designed as an HDD. The proposed dry open cut contingency will only be employed in the event that the HDD cannot be
completed per the Project's contingency plan (included).
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques:
See the attached Open Cut Construction Sequence for details of measures employed during construction to minimize impacts.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for impacts to Waters of the U.S. or Waters of the State?
F Yes f• No
2b. If this project DOES NOT require Compensatory Mitigation, explain why:
The proposed modification will result in an additional 226 If of temporary stream impact. Because the impacts are temporary and the banks will be restored to original grades and
contours, stream mitigation should not be required. Because the additional buffer impacts are for temporary workspace and will be allowed to return to a forested state, we do not
anticipate that additional buffer mitigation will be required.

F. Stormwater Management and Diffuse Flow Plan (required by DWR)
1. Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified within one of the NC Riparian Buffer Protection Rules?
r Yes r No
What type of SCM are you providing?
r Level Spreader
r Vegetated Conveyance (lower SHWT)
r Wetland Swale (higher SHWT)
r Other SCM that removes minimum 30 % nitrogen
W Proposed project will not create concentrated stormwater flow through the buffer
Diffuse Flow Documentation
2. Stormwater Management Plan
2a. Is this a NCDOT project subject to compliance with NCDOT's Individual NPDES permit NCS000250?*
r Yes r No
2b. Does this project meet the requirements for low density projects as defined in 15A NCAC 02H .1003(2)?
r Yes r No
Local Government Stormwater Programs
W Phase II r NSW r USMP r" Water Supply
Please identifywhich local government stormwater programyou are using.
Raleigh is the applicable local government. See comments below.
Comments:
The proposed permit modification will not result in additional impervious surface and does not require a post -construction stormwater management plan. The NPDES NCG01 stormwater
construction activities (E&SC Plan) has been obtained for the overall project, and will be appropriately amended to include the open cut contingency plan.
G. Supplementary Information u
1. Environmental Documentation
la. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land?*
r Yes r No
2. Violations (DWR Requirement)
2a. Is the site in violation of DWR Water Quality Certification Rules (15ANCAC 21-1.0500), Isolated Wetland Rules (15A NCAC 2H .1300), or DWR Surface Water or Wetland Standards or
Riparian Buffer Rules (15A NCAC 2B .0200)?*
r Yes r No
3. Cumulative Impacts (DWR Requirement)
3a. Will this project result in additional development, which could impact nearby downstream water quality?*
r Yes r No
3b. If you answered "no," provide a short narrative description.
The proposed modification does not involve activities that are considered growth -inducing.
4. Sewage Disposal (DWR Requirement)
4a. Is sewage disposal required by DWR for this project?*
r Yes r Nor WA
5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or habitat?*
r Yes r No
5b. Have you checked with the USFWS concerning Endangered Species Act impacts?*
r Yes r No
5c. If yes, indicate the USFWS Field Office you have contacted.
Raleigh
5d. Is another Federal agency involved?*

r Yes r No r Unknown
What Federal Agency is involved?
National Marine Fisheries Services
5e. Is this a DOT project located within Division's 1-8?
r Yes r No
5f. Will you cut any trees in order to conduct the work in waters of the U.S.?
r Yes r No
5g. Does this project involve bridge maintenance or removal?
r Yes r No
5h. Does this project involve the construction/installation of a wind turbine(s)?*
r Yes r No
5i. Does this project involve (1) blasting, and/or (2) other percussive activities that will be conducted by machines, such as jackhammers, mechanized pile drivers, etc.?
r Yes r No
If yes, please provide details to include type of percussive activity, purpose, duration, and specific location of this activity on the property.
T-30 %use River Open Cut Construction Sequence.pdf 59.36KB
5j. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat?
FWS and NMFS correspondence
Consultation Documentation Upload
T30 - ATLANTIC STURGEON REPORT.pdf 10.13MB
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as an Essential Fish Habitat?*
r Yes r No
6b. What data sources did you use to determine whether your site would impact an Essential Fish Habitat?*
See attached report. Project is not located in an area of essential fish habitat does contain a waterbody designated as critical habitat.
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal governments have designated as having historic or cultural preservation status?*
r Yes r No
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?*
Archaeological assessments of the complete project corridor were originally performed by S&ME and Brockington Cultural Resources Consultants.
Results of the surveys were provided to SHPO, who concurred with our recommendations that no historic or cultural resources would be affected by
the project. Copies of the SHPO concurrence letters were included in the original permit submittal.
7c. Historic or Prehistoric Information Upload
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-designated 100-year floodplain?*
r Yes r No
8b. If yes, explain how project meets FEMA requirements:
DENC will obtain all necessary floodplain encroachment approvals from the governing municipality prior to construction.
8c. What source(s) did you use to make the floodplain determination?*
Appropriate FEMA mapping.
Miscellaneous
Comments
Please see original permit submittal for any additional information related to the overall project.
Miscellaneous attachments not previously requested.
Site Vicinity Ex1hibit.pdf 633.65KB
DENC T30 %use River Geotechnical Report.pdf 3.73MB
271929-RP-001 HDD CONTINGENCY PLAN.PDF 263.99KB
Signature
*
W By checking the box and signing below, I certify that:
• I have given true, accurate, and complete information on this form;
• I agree that submission of this PCN form is a "transaction" subject to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act");

I agree to conduct this transaction by electronic means pursuant to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act');
I understand that an electronic signature has the same legal effect and can be enforced in the same way as a written signature; AND
I intend to electronically sign and submit the PCN form.
Full Name:
Joey Lawler
Signature
J-6r�Y LA-LK�L
Date
1 /31 /2020

CROSSING LOCATION
Copyright:© 2 01 3 Natio n al Ge og raphic Society, i-cubed
Pipe Location
Atlantic Sturgeon Critical Habitat
SCA LE:
DATE:
PROJECT NUMBER
FIG URE NO.
21 in = 1,500 ft
5-6-19
743 517006
DOMINION ENERGY NORTH CAROLINAT-030 PIPELINE PROJECTWAKE AND F RANKLIN COUNTIES, NCDrawing Path: Q:\7435\17\006 T-30\DATA\GIS\NMFS Fig 2.mxd plotted by amoore 05-06-20190 1,000 2,000Feet
USG S TOP OG RA PH IC M AP E X HIBIT
REFERENCE:GIS BASE LAYE RS WERE OBTAINED FROM ESRI AND COU NT Y GIS SOURCES. THIS EXHIBIT ISFOR IN FO RMATIO NAL PU RPOSE S O NLY. ALL FEAT URE LOC AT IONS DISPLAYED AREAPPROXIMATED. THEY ARE N OT BASED ON CI VIL S URVEY INFORMAT ION, UNLESS ST AT EDOTHERWISE.
PR OP OS ED CROS SIN G LOCATION
© 2019 Microsoft Corporation © 2019 DigitalGlobe ©CNES (2019) Distribution Airbus DS
271929-34-300
T-030 EXTENSION
NEUSE RIVER CROSSINGISSUED FOR
REVIEW
© 2019 Microsoft Corporation © 2019 DigitalGlobe ©CNES (2019) Distribution Airbus DS
271929-34-301
T-030 EXTENSION
NEUSE RIVER CROSSINGISSUED FOR
REVIEW
© 2019 Microsoft Corporation © 2019 DigitalGlobe ©CNES (2019) Distribution Airbus DS
271929-34-302
T-030 EXTENSION
NEUSE RIVER CROSSINGISSUED FOR
REVIEW
$$$$31.5
3
2
1660+00
1665+00
1670+00
1675+001680+001685+001690+00SITE 100: Stream Impact S54(Neuse River)Open Cut:226 LF Temporary Stream Impact(0.743 Acres)
SITE 98: Stream Impact S5353 LF Temporar y Stream Impact
SITE 99: Wetland Impact W71Forested Wetland0.014 Ac. Permanent Fill
SITE 96: Wetland Impact W70-1Forested Wetland0.016 Ac. Permanent Impact
SITE 97: Wetland Impact W70-2Forested Wetland0.030 Ac. Permanent Impact
MATCH 53
MATCH 54
PROP OSED PIPELINE
PROJEC T LIMIT OF D ISTUR BANCE
PERMANENT MAINTAINE D ROW
WE TLANDS
$STREAM CE NTERLINE
DELINE ATED FEAT URE S OUTSIDE LOD
TEMPORARY STRE AM IMPACTS
TEMPORARY WE TL AND IMPAC TS
PERMANENT WETL AND CONVER SION
SCALE:
DATE:
PROJECT NUMBER
FIGURE NO.61rev
1 " = 200 '
1-28-20
7435-17-006DENC T-30 PIPELINE PROJECTFRANKLIN AND WAKE COUNTIES, NORTH CAROLINADrawing Path: Q:\7435\17\006 T-30\DATA\GIS\shp\PCNMapping\08-72WetlandImpactMaps.mxd plotted by DHomans 01-28-20200 200 400
(FEET)JURISDICTIONAL IMPACTS³REFERENCE:JURISDICTIONAL FEATU RES CONFIRM ED BY T HE USACE FOLLOWING 3/8 AND 3/29/2019 FIELD REV IEW. THIS MA P IS FOR IN FORMATI ONAL PURPOS ES ONLY. ALL FEATURELOCATIONS DISPLAYED ARE APPROXIM ATED. THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNL ESS STATED OTHERWI SE.
1
6
8
5
+
0
0
Z O N E 2
Z O N E 2
Z O N E 2
Z O N E 1
Z O N E 1
Z O N E 1
Z O N E 2
Z O N E 2
ZONE 2
Z O N E 1
Z O N E 1
Z O N E 1
Stream Buffer Zones
No n F ore sted Buffer In Permanent ROW
Temporarily C le are d Buffe r
Perm anent ly Cleared Buffer
Wetland in Buffers
Buffered Stream Banks
Op en Wate r Features
Culverts
Wetlands
Pro pose d Pipeline
Pro je ct Limits of D isturbance
Perm anent ly Maintained ROW
SCALE:
DATE:
PROJECT NUMBER
FIGURE NO.
137rev1 " = 80 '
1-28-20
7435-17-006DENC T-30 P IPELIN E PR OJECTFRANKLIN AND WAK E COUNTIES, NORTH CAROLINA
Drawing Path : Q:\7435\17\006 T-30\DATA\G IS\sh p\PC NMa pping\79_150BufferIm pactDetails.m xd plotted by D Homan s 01-28-2020
0 80(FE ET)
B59 BUFFER IMPACT DETAIL
³2017 NCONEM AP A ER IAL B59
S54
134
Upper Neuse (03020201)
Non-perpendic ular cros sing; 200' wide corr id or
16,634 3,488
0
13,146
0
0
9,094
2,323
0
6,771
0
0
All new proposed buffer impacts are temporary.
Mitigation for permanent impacts already provided.
Johnston
Wake
OneilMarshburnRoseBuffaloGuyLombardMooreTrawickM arshCreekSkycrestLakeWoodard
Main
R
ole
sville
G a r n e rTrawick MarshburnAuburnKnightdaleRaynorOneilNew HopeMartinPondGarner BuffaloJonesSausageWhit
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Ro
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Rock QuarryCoveredBridgeP oo l e
UV42
UV97
UV42
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£¤64
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§¨¦440
§¨¦440
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C layton
Kn igh tdale W en dellRaleigh
Garner
Copyright:© 2 01 3 Natio n al Ge og raphic Society, i-cubed
Pipe Location
SCA LE:
DATE:
PROJECT NUMBER
FIG URE NO.
11:100 ,000
5-6-19
743 517006
DOMINION ENERGY NORTH CAROLINAT-030 PIPELINE PROJECTWAKE AND F RANKLIN COUNTIES, NCDrawing Path: Q:\7435\17\006 T-30\DATA\GIS\NMFS Fig 1.mxd plotted by amoore 05-06-20190 1 2 Mil es
SITE VICINITY EX H IB IT
³
REFERENCE:GIS BASE LAYE RS WERE OBTAINED FROM ESRI AND COU NT Y GIS SOURCES. THIS EXHIBIT ISFOR IN FO RMATIO NAL PU RPOSE S O NLY. ALL FEAT URE LOC AT IONS DISPLAYED AREAPPROXIMATED. THEY ARE N OT BASED ON CI VIL S URVEY INFORMAT ION, UNLESS ST AT EDOTHERWISE.
CR OS SIN G LOCATION
^_
Raleigh
Charlotte
R ich mondVirginia
N o r t h C a rolina
S o u t h C a rolina
K e n t uc ky
T e n n e ssee
W e s t V i r ginia
NEUSE RIVER OPEN CUT
CONSTRUCTION SEQUENCE
Introduction
This document will serve as a construction sequencing plan for the dry open cut contingency
crossing of the Neuse River with the planned 20” gas pipeline T-30 project. This method of
crossing the Neuse River is a contingency plan in the event the primary method of crossing
(Horizontal Directional Drill) was not able to be completed. This narrative will be accompanied
by drawings that will show the key work elements and best management practices that will be
implemented to provide for a successful crossing and installation.
General Crossing Method
The pipeline will be installed across the Neuse River in a two-part dam and pump construction
method. A temporary dam will be placed across a portion of the river and then the water will be
pumped out of this section to a well-vegetated upland location at least 50 feet from the riverbank.
Based upon the geology of the riverbed, a well point system (or other appropriate method) may
need to be installed to lower the water table in the excavation area. A trench will be excavated
within this dry portion of the river bed for the permanent installation of the pipeline. Material
excavated from the trench will be placed in temporary stockpile areas within dry portions of the
river bed and on the dry bank of the river.
Prior to starting the crossing work, erosion and sediment control (E&SC) measures will be
installed along the downslope perimeter of temporary soil stockpiles, temporary work areas (e.g.
equipment staging, pipe fabrication), and remainder of the temporary workspace to prevent
sediment from entering the river bed.
Individual lengths of concrete coated pipe will be staged, welded, coated and tested at a fabrication
area located away from the limits of the river. The span of pipe which will be approximately half
of the width of the river will be transported to the crossing site. The pipe will then be positioned
and lowered into the excavated trench using equipment of appropriate size and configuration for
the full length of the fabricated pipe (e.g. side-boom cranes).
Once lowered into the excavated trench, the concrete coated pipe will be backfilled. ‘Padding’
backfill comprised of pea gravel sized backfill will first be placed to protect the pipe and its
coating. The remainder of the trench will be backfilled with compactable soil or rock material to
within approximately 2 feet of the original river bed. The river bed will then be restored to the
original grades with erosion-resistant material to protect the trench and riverbank area. Once this
is complete, the coffer dam will be removed and the process repeated on the other half of the river,
as to always leave a portion of the river dry for construction of the pipeline but to continue to allow
flow around the work area. There will need to be an overlap of the work areas in the middle of the
river for tie-in of the two segments.
The attached crossing plan drawings illustrate and further clarify the key elements of the crossing
method summarized above. Additional discussion regarding the construction sequence and
elements are provided below.
Construction Sequencing
Notifications, Coordination and Work Lay-out
Dominion will complete all required landowner and regulatory agency notifications and
coordination as well as attend all required pre-construction meetings prior to the start or work.
Once all required notifications, meetings and coordination have been completed, survey personnel
will survey and stake-out the pipeline limits of disturbance and access roads. The construction
contractor will then complete the required utility notifications, one-calls, mark-outs and coordinate
with the utility owners/operators as necessary.
Prepare and Access Work Space
Once all the required pre-construction notifications have been completed and work areas staked,
the contractor will install perimeter E&SC measures associated with work site.
A staging area for site preparation and equipment will be cleared and graded. Once the site is
established, remaining E&SC measures required for the temporary work support areas and for the
grading of the river banks will then be installed. Topsoil will be stripped and stockpiled for re-use
during site restoration. The attached crossing plan drawings show the planned route, temporary
workspace configuration and E&SC measures.
The construction contractor will stage all material and equipment that will be used for the crossing
in the designated temporary workspace on each side of the river at a minimum of 100’ from the
top of the bank and outside of the 25-year flood plain on each river bank. Signs will also be posted
indicating no equipment parking or fueling within 100 feet of the river.
Install Phase I Temporary Dam
Once all the E&SC measures and temporary workspaces are identified, the construction contractor
will install a temporary dam extending approximately half way across the width of the Neuse river
in a tear-drop configuration with an appropriate overlap in the middle. The general configuration
of the temporary dam is illustrated on the included crossing plan drawings.
After the temporary dam has been established, the water that has been isolated from the flow of
the river will be pumped out through a dewatering structure. Based upon the geology of the
riverbed, a well point system (or other appropriate method) may need to be installed to lower the
water table in the excavation area. The trench spoil will be placed in spoil storage areas around the
trench and on the bank of the river, within the appropriate E&SC measures.
Excavate Pipe Trench Phase I
Once the area between the portable dam and the bank of the river has been completely pumped
dry the pipeline trench will be excavated using one or two conventional tracked excavators. The
trench must be excavated to allow for a minimum of 6 feet of cover above the top of the concrete
coated pipe. It is expected that the riverbed is underlain with shallow rock that will require
loosening (using non-mechanical methods such as blasting) to allow for its excavation. Should
blasting be required, a separate blasting plan will be developed. The contractor may choose to
place temporary mats in the river bed to facilitate the travel of the excavation equipment.
The trench spoil will be placed in spoil storage areas around the trench and on the bank of the river,
within the appropriate E&SC measures.
Install Pipe and Backfill Trench for Phase I
Once the trench has been excavated, the fabricated section of concrete coated pipe will be
transported to the crossing site. The pipe will then be positioned and lowered into the excavated
trench. ‘Padding’ backfill comprised of pea gravel-sized backfill will first be placed to protect the
pipe and its coating backfill. Previously excavated soil material will then be transported from the
stockpile areas and used to backfill the remainder of the trench to the original grade of the river
bed. Excavated rock or other erosion-resistant material will be used to then restore the river bed to
its original grade.
Install Phase II Temporary Dam
Once the excavated trench from Phase I has been backfilled and restored to the original grade, the
portable dam will be repositioned to the opposite side of the river in a configuration that mirrors
the Phase I configuration with an overlap in the widest extended point on the temporary dam.
After the temporary dam has been established, water that has been isolated from the flow of the
river will be pumped out through a dewatering structure. Based upon the geology of the riverbed,
a well point system (or other appropriate method) may need to be installed to lower the water table
in the excavation area.

Excavate Pipe Trench Phase II
Once the area between the portable dam and the bank of the river has been completely pumped
dry the pipeline trench will be excavated using one or two conventional tracked excavators. The
trench must be excavated to allow for a minimum of 6 feet of cover above the top of the concrete
coated pipe. A portion of the pipe section that was installed in Phase I will also be excavated. It
is expected that the riverbed is underlain with shallow rock that will require loosening (using non-
mechanical methods such as blasting) to allow for its excavation. The contractor may choose to
place temporary mats in the river bed to facilitate the travel of the excavation equipment. The
trench spoil will be placed in the spoil storage areas around the trench and on the bank of the river,
within the appropriate E&SC measures.
Tie In To Phase I Pipe and Backfill Trench
Once the trench has been excavated, a section of the concrete coated pipe will be transported to
the crossing site. The pipe will then be positioned and lowered into the excavated trench. This
section of the pipe will then be tied into the Phase I pipe section by weld.
‘Padding’ backfill comprised of pea gravel sized backfill will first be placed to protect the pipe
and its coating backfill. Previously excavated soil material will then be transported from the
stockpile areas and used to backfill the remainder of the trench to original river bed. Excavated
rock or other erosion-resistant material will be used to then restore the river bed to its original
grade.
Site Restoration
Once the trench is backfilled and restored, the portable dam will be removed. The ends of the
pipeline section installed across the river will be welded (tied-in) to the upland section of pipeline
at each river bank. After the pipeline tie-ins are completed the contractor will install trench plugs
and backfill upland pipe trenches. All construction debris will be removed and grade/cut soil
material and topsoil will be returned to its original location and diversion terraces installed. The
contractor with then disc, fertilize, lime, seed and mulch all disturbed areas in accordance with the
approved E&SC plan and install pipeline marker posts.
Excess soil or rock materials will be stabilized and remain on site or otherwise transported to an
off-site disposal location. The remaining E&SC measures will remain in place until vegetation is
established and the site is stabilized.