WQ0032375_More Information (Received)_20190926

v
v McIQM&C:REED LETTER OF TRANSMITTAL
v
OVERNIGHT DATE: September 26, 2019
O: NCDEQ-PERCS UNIT PROJECT NO: 0 740 1-000 1 TASK NO: 40
RE: Additional Information Request:
1617 Mail Service Center
Raleigh, NC 27699-1617 WQ0032375 MOD Bluffs on Cape
Fear Phase 5
ATTENTION: Christyn Fertenbaugh, PE TRANSMITTAL NO: 1 PAGE 1 OF 1
WE ARE SENDING: ® Originals ❑ Prints n Shop DraIk C $��ples
® Specifications ® Calculations Other- �/��
OCT 01 2019
Quantity Drawing No. Rev. Description Status
NCDEQ/DWR/NPDES
1 Low Pressure Sewer Calculations G
1 Additional Specifications G
1 ASEA 04-16 Application(Revised Sheet 2) G
1 Email from Brunswick County C
1 Comment Response Letter C
Issue Status Code: A. Preliminary B. Fabrication Only C. For Information D. Bid
E. Construction F. For Review &Comments G. For Approval H. See Remarks
Action Status Code: 1. No Exceptions Taken 2. Make Corrections Noted 3.Other
4. Amend & Resubmit 5. Rejected-See Remarks
REMARKS:
243 NORTH FRONT STREET,WILMINGTON,NC 28401(910)343-1048 FAX[phone]
McKIM & CREED, INC.
SignedrV,-s A- - -
Ryn Spiker
Senior Designer

McKIM&CREED ENGINEERS
v
SURVEYORS
PLANNERS
September 26, 2019 M&C 07401-0001 (40)
Christyn Fertenbaugh, PE
PERCS Unit
Division of Water Resources
Department of Environmental Quality RECEI V
1617 Mail Service Center ED
Raleigh, NC 27699-1617 OCT 0 j 2019
RE: Additional Information Request: NCDEQ/DAR,NPDES
WQ0032375 MOD
The Bluffs on The Cape Fear-Phase 5
Brunswick County
Dear Ms. Fertenbaugh:
In response to the Additional Information Request Received (September 25,
2019) regarding The Bluffs on The Cape Fear—Phase 5 WQ0032375 MOD, we
offer the following responses:
General Review:
1. Please provide a set of revised, final plans and specifications per the comments
below via email in PDF format for our records, to be added to the previously
submitted CD.
- Response: Specifications have been revised and emailed in a PDF format to
be added to the previously submitted CD. No changes occurred on the plans.
2. Please note that the receivingwastewater treatment facility, the North
Y
Brunswick Regional WWTP (Permit No. NC0086819), is currently under a
sewer moratorium. This modified permit may not be issued until that
moratorium is lifted.
2 4 3 North Front Street - Response: Brunswick County has obtained all required permits for the
expansion of the Northeast Brunswick Regional WWTP and is moving forward
Wilmington, NC 28401 with bidding and financing of the expansion. The county has been in contact
with DWR Director Linda Culpepper and received permission to provide FTSE
forms for permits tributary to the plant. Our interpretation of this is that DEQ
910.343.1048 has lifted the moratorium and is issuing permits again. Please see attached
email from Brunswick County Public Utilities Director John Nichols via
Fax [phone] William Pinnix.
www.mckimcreed.com
L

Ms. Christyn Fertenbaugh
September 26, 2019
3. Please provide confirmation that all residences are to be 3-bedroom homes, as
the listed flows are 210 GPD per home. For future submittals, this may be
specified on the application in Section VI(8).
- Response: Application Section VI(8) revised to specifiy that all residences
are to be 3-bedroom homes.
Calculations:
1. All calculations must be signed/sealed by a Professional Engineer licensed to
practice in North Carolina, per 15A NCAC 02T.0305(b).
- Response: All calculations have been signed/sealed by a Professional
Engineer Licensed to Practice in North Carolina.
2. The required 24-hours of storage must be calculated from the pump-on position,
per 15A NCAC 02T.0305(h)(1)(D). Please revise.
-Response:The Wet Well Storage Calculations have been revised to read
"Pump On" and the pump on depth has been revised to match the depths
shown on the Wet Well Elevation Table, resulting in a new provided 24-hours
of storage volume.
Specifications:
1. The specifications are missing the appropriate section detailing the full
installation requirements (Section TS022.01 Wastewater Force Mains), which is
referenced several times in the provided specifications. Please revise to include
this section.
- Response: Section TS022.01 Wastewater Force Mains and Section TS035.01
Electronic Marker Balls for Water Mains and Sewer Force Mains have been
added to the specifications, along with a revised Specification Table of
Contents.
If you have any questions, please do not hesitate to contact me at our office 910-
343-1048.
Sincerely,
McKim & Creed, INC.
Craig Nursey, PE
v�MCKIM&CREED

Craig Nursey
From: William Pinnix <[e-mail]>
Sent: Thursday, September 26, 2019 8:35 AM
To: Richard (Rick) A. Moore; Craig Nursey
Cc: Tony Boahn
Subject: FW:Additional Information Request: WQ0032375 MOD Bluffs on Cape Fear Ph 5
Rick and Craig,
To help you here is an email that John Nichols recently sent out on the NEBWWTF moratorium:
All required permits have been received for the Northeast Brunswick Wastewater System Expansion projects (2.5 mgd
WWTP expansion, Force Mains, and Pump Station Upgrades). Moreover, bids have been received and the county is
taking the necessary steps for financing and award of the projects.
County staff have been in contact with DEQ staff, including DEQ Division of Water Resources Director Linda Culpepper,
and Brunswick County may now provide FTSE forms in support of Sewer Line Extension Permits for flow tributary to the
Northeast Brunswick Regional WWTP. FTSE requests may be directed to the Brunswick County Engineering Department
along with any required engineering analysis in support of your request.
We will forward any additional information received from DEQ as it becomes available. If you have any questions,
please contact myself or Donald Dixon at 910-253-2485.
Thank you,
orrn c/Yicitofs, PE, CPESC
�Director
-i recto r
Brunswick County Public Utilities
PO Box 249
Bolivia, NC 28422
Utility Operations Center
250 Grey Water Road NE
Supply, NC 28462
910-253-2653 phone
910-253-5776 fax
William L. Pinnix, P.E.
Director of Engineering
Brunswick County
Post Office Box 249
75 Courthouse Drive NE
Building I
Bolivia, North Carolina 28422
Office: 910.253.2408
Cell: 910.409.2557
Fax: [phone]
1

VI. GENERAL REQUIREMENTS
1. If the Applicant is a Privately-Owned Public Utility,has a Certificate of Public Convenience and Necessity been submitted?
El Yes ❑No ZN/A
2. If the Applicant is a Developer of lots to be sold,has a Developer's Operational Agreement(FORM: DEV)been submitted?
El Yes ❑No ®N/A
3. If the Applicant is a Home/Property Owners'Association,has an Operational Agreement(FORM:HOA)been submitted?
❑ Yes ❑No ®N/A
4. Origin of wastewater: (check all that apply):
Z Residential Owned El Retail(stores,centers,malls) ❑Car Wash
El Residential Leased El Retail with food preparation/service El Hotel and/or Motels
❑ School/preschool/day care El Medical/dental/veterinary facilities El Swimming Pool/Clubhouse
El Food and drink facilities El Church El Swimming Pool/Filter Backwash
El Businesses/offices/factories El Nursing Home El Other(Explain in Attachment)
5. Is/was an Environmental Assessment required under 15A NCAC 01C? El Yes ®No
If yes,submit the appropriate final environmental document(FONSI,ROD,etc.)
6. Nature of wastewater: 100%Domestic/Commercial 0%Other waste—specify:
0%Industrial(See 15A NCAC 02T.0103(20))
7. Wastewater generated by project: 12,470 GPD(per 15A NCAC 02T.0114)
Has a flow reduction been approved under 15A NCAC 02T.0114(f)? ® Yes ❑ No
If ves,provide a copy of approval
8. Summarize wastewater generated by project:
Establishment Type Daily Design Flow a No.of Units Flow
Single Family Residence-3 Bedroom 210 gal/day 57 11,970 GPD
Riverfront Park-2 fixtures 250 gal/day/fixture 2 500 GPD
gal/ GPD
gal/ GPD
gal/ GPD
gall GPD
Total 12,470 GPD
a See 15A NCAC 02T .0114(b),(d),(e)(I) and (e)(2)for caveats to wastewater design flow rates(i.e.,minimum flow per
dwelling;proposed unknown non-residential development uses;public access facilities located near high public use areas;
and residential property located south or east of the Atlantic Intracoastal Waterway to be used as vacation rentals as defined
in G.S.42A-4).
b Per 15A NCAC 02T.0114(c),design flow rates for establishments not identified below shall be determined using available
flow data,water using fixtures,occupancy or operation patterns,and other measured data.
FORM: ASEA 04-16 Page 2 of 5

RECEIVED
OCT 01 2019
NCDEQIDWRINPDES
THE BLUFFS ON THE CAPE FEAR
PHASE 5 (LOTS 485 - 541)
BRUNSWICK COUNTY, NC
LOW PRESSURE SEWER CALCULATIONS
Prepared for:
BLUFFS INVESTMENT LLC
145 Brookline Drive
Pinehurst,NC 28374-7129
[phone]
Prepared by:
Mq<IM&CREED
243 North Front Street
Wilmington, NC 28401 411111/_/or,
[phone] ••• '
:
SEAL .
046800 • =
Project#07401-0001 (40)
��, .D.IN ����i/Zf/I�3
''747G N
September 2019

Scenario: Phase 5 -
` l Phase 5 Boundary
au
RN=eWit/ I R12
co..,Coding Legend ��I
111.„4 7Pine:Dumebl(int
1, 1 ..!
f_i*—, .
R it
iri---A....,/-0611,
e>_ 1 25
7r...„...47
:7 , 1 i
I , t. <- 3,00
lila 0 w59{ ly,/
Other
2W5 is _. :
# • �1 i{21.Iq7 �� 11101=4�, / tea= 9 2 E 76 ,
lii ' Q,„ Ile _ .. R
Q, 1\ \ flMl r: V
.3\
R59 R.1 11
\... FI{7{ _ P.11. v —
\ - /
PMP-61] ' \ f
WaterGEMS CONNECT Edition Update 1
Bluffs Sewer-Master Plan.wtg Bentley Systems,Inc. Haestad Methods Solution Center 110,01.00.72]
5/15/2019 27 Siemon Company Drive Suite 200 W Watertown,CT 06795 USA Page 1 of 1
[phone]

FORM: ASEA 04-16; #7 ATTACHEMENT
Zone From Node To Node Diameter (in) Length (ft) # Pumps in Zone Pump Model Specified for Zone
72 J-1645 J-6 1.5 156 3 Barnes OGP 2HP
73 J-5 J-1522 3 _ 434 _ 8 Barnes OGP 2HP
74 J-1643 J-5 2 460 9 Barnes OGP 2HP
75 J-1 J-1643 2 368 6 Barnes OGP 2HP
76 J-1456 J-1 1.5 244 3 Barnes OGP 2HP

1
FlexTable:Pump Table
label Se12BOn Status(InmWl) HydraWrc Hydraulic flow(Total) Pump Purn9,Din
(90) Grade Grade (90m) Mead
(SWAM (Drsfharge) (tt)
(tt) (It)
PMP-67.1 20.04 On 20.50 114.42 11 93.92 eOne Curve
PMP-72.1 16.06 On 17.00 118.38 11 101.38 eOne Curve
PMP-73.1 18.16 On 19.00 123.87 11 104.87 eOne Curve
PMP-74,1 22.50 On 23.00 140.35 11 117.35 eOne Curve
PMP-75.1 18.21 On 19.00 148.06 10 129.06 eOne Curve
PMP-76.2 22.00 On 22.50 155.19 10 132.69 eOne Curve
PMP-76.1 20.06 On 21.00 155.18 10 134.18 eOne Curve
WaterGEMS CONNECT Edition Update 1
Blurts Sewer.Master Phan wtg Bentley Systems.Mc Naesbd Methods Solution Center (10 01.00.721
5/152019 27 Sremon Company Onve Sude 200 W Watertown.CT 06795 USA.1-203-7551666 Pape 1 of 1

FlexTable: Pipe Table
Label Start Node Stop Node Diameter Length Flow Hydraulic Hydraulic Headloss Headloss Velocity No.of Pumps No,of Probability Probability Pump Model, Notes
(in) (Scaled) (gpm) Grade(Sort) Grade(Step) (ft) Gradient (ft/s) Tributary to Pumps In Number of Number of Specified for Zone
(ft) (ft) (ft) (Ron Zone Zone Tributary Pumps Pumps Running
Running within Zone
P-1139(2)(2) 3-4 3-1695 3.0 599 74 107.30 95.22 12.08 0.017 3.34 45 14 6 4 E-One Grinder Pump
P-1139(1) 3-1503 J-4 3.0 107 62 108.65 107.30 1.35 0.013 2.82 45 14 6 4 E-One Grinder Pump
P-1137 R-1018 PMP-3286 6C.0 272 10 21.00 21.00 0.00 0.000 C.00 0 0 0 0 E-One Grinder Pump PROPER VELOCITY NOT BEING
DEMONSTRATED ON THIS RUN
P-1136 R-1017 PMP-3285 60.0 115 10 22.50 22.50 0.00 0.000 C.CC 0 0 0 0 E-One Grinder Pump PROPERRATE VELOCITY NOT BEING
DEMONSTRATE ON THIS RUN
P-1134 PMP-3286 5-1456 1.3 230 10 155.18 154.32 0.86 C.C29 2.53 0 3 0 2 E-One Grinder Pump
P-1133 PMP-3285 J-1456 1.3 148 10 155.19 154.32 0.87 0.029 2.55 0 3 0 2 E-One Grinder Pump
P-1022 R-968 PMP-3233 60.0 11C 11 17.00 17.00 0.00 0.000 0.00 0 0 0 0 E-One Grinder Pump PROPER VELOCITY NOT BEING
DEMONSTRATED ON THIS RUN
P-1019 PMP-3233 J-1645 1.3 123 11 118.38 117.26 1.13 0.038 2.92 0 3 0 2 E-One Grinder Pump
P-908(2) 3-5 3-1522 3.0 434 51 117.05 113.26 3.79 0.009 2.31 18 8 4 3 E-One Grinder Pump
P-908(1) 3-1643 3-5 2.0 460 40 135.47 117.05 18.42 0.040 4.07 9 9 3 4 E-One Grinder Pump
P-855 3-1646 3-1504 1.5 107 0 108.65 108.65 0.0C 0.000 C.00 0 3 0 2 E-One Gnnder Pump PROPER VELOCITY NOT BEING
DEMONSTRATED ON THIS RUN
P-854 3-1503 J-1646 2.0 280 0 108.65 108.65 C,CC C.000 0.00 3 2 2 2 E-One Grinder Pump PROPER VELOCITY NOT BEING
DEMONSTRATED ON THIS RUN
P-853(2) 3-6 3-1522 2.0 419 11 114.85 113.26 1.59 0.004 1.14 3 4 2 3 E-One Gnnder Pump PROPER VELOCITY NOT BEING
DEMONSTRATED ON THIS RUN
P-853(1) J-1645 3-6 1.5 156 11 117.26 114.85 2.41 0,015 2.03 0 3 0 2 E-One Grinder Pump
P-850(2) J-1456 J-1 1.5 244 19 154.32 143.84 1C.48 0.043 3.53 0 3 0 2 E-One Grinder Pump
P-85C(1) J-1 3-1643 2.0 368 29 143.84 135.47 8.37 C.023 3.00 3 6 2 3 E-One Grinder Pump
P-666(2; 3-2 3-1503 3.0 277 62 112.15 108.65 3.50 C.013 2.82 33 7 6 3 E-One Grinder Pump
P-666(1( 3-1522 3-2 3.0 98 62 113.26 112.15 1.11 0.013 2.82 33 7 6 3 E-One Grinder Pump
P-28 PMP-14 3-4 1.3 181 11 114.42 107.3C 7.12 0.039 3.00 45 14 6 4 E-One Grinder Pump
P-27 R-14 PMP-14 60.0 267 11 20.50 20.50 0.00 0.000 0.00 0 C C 0 E-One Gnnder Pump PROPER VELOCITY NOT BEING
DEMONSTRATED ON THIS RUN
P-24 PMP-32 .3-5 1.3 186 11 123.87 117.05 6.82 C.C37 2.89 18 8 4 3 E-One Gnnder Pump
P-23 R-12 PMP-12 60.0 184 11 19.0C 19.00 0.0C 0.000 0.00 0 0 C 0 E-One Grinder Pump PROPER VELOCITY NOT BEING
DEMONSTRATED ON THIS RUN
P-22 PMP-11 3-1643 1.3 146 11 140.35 135.47 4.88 C.033 2.75 9 6 3 3 E-One Grinder Pump
P-21 R-11 PMP-11 60.0 218 11 23.00 23.00 0.88 0.000 0.00 0 0 0 0 E-One Grinder Pump PROPER VELOCITY NOT BEING
DEMONSTRATED ON THIS RUN
P-6 R-3 PMP-3 60.0 214 10 19.0C 19.0C 0.00 0.000 0.00 0 C C 0 E-One Gnnder Pump PROPER VELOCITY NOT
THIS RUN
P-5 PMP-3 3-1 1.3 140 10 148.06 143.84 4.23 0.030 2.60 3 6 2 3 E-One Grinder Pump
Water(EMS CONNECT Edmon Update 1
BEMs Sewer-Master Plan Mg Benuey Systems Inc Haesiso Methods Solution Center (10.01 00.72j
5/'S/20'e 27 Smrron Company Dove Suite 200 W Watertown,CT Oa795 USA-?-203-755-1666 Page r of t

LOW PRESSURE SEWER CALCULATION TABLE
PROJECT: DATE PREPARED:
The Bluffs on The Cape Fear:Phase 5 5/22/2019
DESCRIPTION: PREPARED FOR:
LOW PRESSURE SEWER CALCULATIONS NCDEQ
ENGINEER: PREPARED BY: REVIEWED BY:
RAS RAM
PROJECT NO,07401-0001
Number Accum Gal/Day Max Flow Max Max Flow Pipe Max Length of Friction Loss Friction Loss Accumulated Max Main Minimum Static Total
Zone Connects of Pumps Pumps in per Core per Sim (GPM) Size Velocity Main this Factor this Zone Friction Loss Elevation Pump Head Dynamic Head
Number to Zone in Zone Zone Core Ops (inches) (FPS) Zone (ft/100ft) (Feet) Elevation (Feet) (ft)
76 75 3 3 210 11 2 22 1.5 3.99 244 4.76 11.61 84.54 21.4 15.94 5 46 90.00
75 74 6 9 210 11 3 33 2 3.37 368 2 49 9.15 72.93 20 63 15.31 5 32 78.25
74 73 9 18 210 11 4 44 2 4.49 460 4.24 19 49 63.7E 19.81 11.35 8.46 72.24
73 70 8 26 210 11 5 55 3 2.50 434 0.89 3.87 44.29 21.7 15.08 6.62 50.91
72 71 3 3 210 11 2 22 1.5 3.99 156 4.76 7.42 47.85 20.58 14.89 5 69 53.54
71 70 4 7 210 11 3 33 2 3.37 419 2.49 10.42 40.42 20.58 16-39 4.19 44.61
70 67 7 40 210 11 6 66 3 3.00 365 1.25 4 56 30.00 21 7 16.55 5 15 35.15
69 68 3 3 210 11 2 22 1.5 3.99 107 4.76 5.09 25.44 19.61 16.05 3 76 29.20
68 67 2 5 210 11 3 33 2 3.37 280 2.49 6.96 20.35 20.39 16.23 416 24.51
67 , 14 59 210 11 7 77 3 3.49 806 1 66 13 39 13.39 20.71 14.16 6 55 19.94

WET WELL ELEVATION TABLE
PROJECT: DATE PREPARED:
The Bluffs on The Cape Fear:Phase 5 9/26/2019
DESCRIPTION: PREPARED FOR:
LOW PRESSURE SEWER CALCULATIONS NCDEQ
ENGINEER: PREPARED BY: REVIEWED BY:
RAS RAM
PROJECT NO.07401-0001
Approx. Alarm On Pump On Pump Off Bottom of
Lot Number Zone Top of Elev Elev Elev Well Elev
Wet Well
485 67 23.46 17.79 16.96 16.29 15.46
486 67 23.87 18.20 17.37 16.70 15.87
487 67 23.73 18.06 17.23 16.56 15.73
488 67 22.93 17.26 16.43 15.76 14.93
489 67 22.16 16.49 15.66 14.99 14.16
490 67 22.55 16.88 16.05 15.38 14.55
491 67 23.13 17.46 16.63 15.96 15.13 I
492 67 24.05 18.38 17.55 16.88 16.05
493 70 25.13 19.46 18.63 17.96 17.13
494 70 24.55 18.88 18.05 17.38 16.55
495 70 25.41 19.74 18.91 18.24 17.41
496 73 26.09 20.42 19.59 18.92 18.09
497 73 25.58 19.91 19.08 18.41 17.58
498 73 26.10 20.43 19.60 18.93 18.10
499 73 24.65 18.98 18.15 17.48 16.65
500 73 23.08 17.41 16.58 15.91 15.08
501 73 23.08 17.41 16.58 15.91 15.08
502 74 20.47 14.80 13.97 13.30 12.47
503 74 20.95 15.28 14.45 13.78 12.95
504 74 21.36 15.69 14.86 14.19 13.36
505 75 23.76 18.09 17.26 16.59 15.76
506 75 24.13 18.46 17.63 16.96 16.13
507 76 23.95 18.28 17.45 16.78 15.95
508 76 23.94 18.27 17.44 16.77 15.94
509 76 26.10 20.43 19.60 18.93 18.10
510 75 23.94 18.27 17.44 16.77 15.94
511 75 24.13 18.46 17.63 16.96 16.13
512 75 23.31 17.64 16.81 16.14 15.31
513 74 21.36 15.69 14.86 14.19 13.36
514 74 19.35 13.68 12.85 12.18 11.35
515 74 24.65 18.98 18.15 17.48 16.65
516 73 26.09 20.42 19.59 18.92 18.09
517 73 26.10 20.43 19.60 18.93 18.10
518 73 25.58 19.91 19.08 18.41 17.58
519 73 26.09 20.42 19.59 18.92 18.09
520 71 25.07 19.40 18.57 17.90 17.07
521 71 25.19 _ 19.52 18.69 18.02 17.19
522 72 22.89 17.22 16.39 15.72 14.89
523 72 22.89 17.22 16.39 15.72 14.89
524 72 22.89 17.22 16.39 15.72 14.89
525 71 24.39 18.72 17.89 17.22 16.39
526 71 25.07 19.40 18.57 17.90 17.07
527 70 25.89 20.22 19.39 18.72 17.89
528 70 25.41 19.74 18.91 18.24 17.41
529 70 24.72 19.05 18.22 17.55 16.72
530 70 24.98 19.31 18.48 17.81 16.98
531 68 24.23 18.56 17.73 17.06 16.23
532 69 24.05 18.38 17.55 16.88 16.05
533 69 24.05 18.38 17.55 16.88 16.05
534 69 24.05 18.38 17.55 16.88 16.05
535 68 24.23 18.56 17.73 17.06 16.23 .
536 67 24.87 19.20 18.37 17.70 16.87
537 67 23.13 17.46 16.63 15.96 15.13
538 67 22.16 16.49 15.66 14.99 14.16
539 67 22.93 17.26 16.43 15.76 14.93
540 67 23.73 18.06 17.23 16.56 15.73
541 67 23.68 18.01 17.18 16.51 15.68

WET WELL STORAGE CALCULATIONS
PROJECT: DATE PREPARED:
The Bluffs on the Cape Fear:Phase 5 9/26/2019
DESCRIPTION: PREPARED FOR :
LOW PRESSURE SEWER CALCULATIONS NCDEQ
ENGINEER: PREPARED BY: REVIEWED BY:
RAS RAM
PROJECT NO.07401-0001
Wet Well Dimensions
Total Depth 7 FT
Inlet Invert Depth 3.00 FT Depths Measured from
Pump On Depth 6.50 FT Top of Well
Diameter 3.50 FT
Total Wet Well Volume
67.35 CF
503.80 Gal
Storage Between Inlet and Pump On
33.67 CF
251.90 Gal 24-hr Storage 210 Gal

BUOYANCY CALCULATIONS
PROJECT: DATE PREPARED:
The Bluffs on The Cape Fear:Phase 5 9/26/2019
DESCRIPTION: PREPARED FOR :
LOW PRESSURE SEWER CALCULATIONS NCDEQ
ENGINEER: PREPARED BY: REVIEWED BY:
RAS RAM
PROJECT NO. 07401-0001
Pump Tank Data Concrete Anchor Data
Diameter 3.5 FT 6 FT
Depth 7 FT 2.25 FT
Specific Weight
Water ( vw) 62.4 PCF
Concrete (yc) 150 PCF
Volume of Water Displaced Volume of Concrete Anchor
VW 130.97 FT' Vc 63.62 FT'
F =V*y
Buoyancy Force Anchor Force
FB 8172.22 lbs FW 9542.59 lbs
Factor of Safety 1.10
F„/FB 1.17

THE BLUFFS ON THE CAPE FEAR
PHASE 5 (Lots 485-541) RECEIVED
BRUNSWICK COUNTY, NC OCT 0 12019
NCDEQ/DWR/NPDES
WATER AND SEWER
TECHNICAL SPECIFICATIONS
Prepared for:
BLUFFS INVESTMENT LLC
145 Brookline Drive
Pinehurst,NC 28374-7129
[phone]
Prepared by:
v MCK1M&CREED
v
243 North Front Street
Wilmington, NC 28401
[phone]
011111/0
Project#07401-0001 (40) C i/
•
y.
a
04880SEAL0
September 2019 ' Q-

September 2012 Brunswick County Engineering Department Revision 1.0
SECTION 2: TECHNICAL SPECIFICATIONS
Specification Title Specification Number&Version
D.fllitikni3 al Id Ill 11117) C3 001.01
I✓�:�ti. g U. d�.ge« a 1Jt�l t I,� ,. and „t<«.t,,,., TG 002.01
Field Engineering TS 003.0T
T3 004.01
T3 005.01
T3 006.01
PIuject Submluals TS 007.01
CUliJl1U.t1V11 l a.ilili. and T.,nipuiaiy Clnitiul6 T3 008.01
Erosion and Sedimentation Control TS 009.01
Ab-Built Diawiug3 TS 010.01
Dewatering TS 011.01
Trench Boxes, Sheeting, and Shoring TS 012.01
Excavating, Grading, Trenching, & Backfilling TS 013.01
Dui ing and Ja.,llil% T3 014.01
Dig..li., ,al D1 illiug T3 015.01
Concrete Curb, Gutters, Driveways, & Sidewalks TS 016.01
Asphalt Paving TS 017.01
Water Distribution System TS 018.01
Storm Water Drainage Systems TS 019.01
Qiavity Sanitary Scwci Sy3lciu TS 020.01
Low Pressure Sewer Systems& Grinder Pumps TS 021.01
Waste Water Force Mains TS 022.01
Wa36, Wald I'\.uiip S.atiunn with Sub11It1 T3 023.01
Scuiitaiy Scwci Pipcliiic Rwwiai.iun TS 024.01
La .d�.apiii T3 025.01
T3 026.01
T3 027.01
G iicial El ,ti i.al li,fuituatiuii T3 028.01
T3 029.01
arum►di,ig and Building TS 030.01
Suigc nut.,.,tiun TS 031.01
Cnu.,ig.,n.,y G.,in,ialui, f.,i Pu1111l 3tativ,i, T3 032.01
3wil..li T3 033.01
ECADA l y.t.,iri f.,r CcwwcC P41Y.p Dtut:e.13 TS 034.01
Electronic Marker Balls for Water Mains and Sewer Force Mains TS 035.01

May 2019 Brunswick County Engineering Department Revision 1.07
Technical Specification 022.01
WASTEWATER FORCE MAINS
1.0 General
a) It is the intent of this specification to provide technical guidance for the proper
material selection and installation for all waste water force mains that are installed
in the service area of the Brunswick County Public Utilities Department.
b) The design engineer should have a thorough understanding of the North Carolina
DENR/DWQ document "Minimum Design Criteria for the Fast Track
Permitting of Pump Stations and Force Mains" in order to ensure state rules are
met for force main design.
c) Refer to Design Section Part D of this Brunswick County Engineering Design
Manual, Technical Specification and Standard Details for Water and Sewer
Systems for design guidance for waste water force mains permitted and
constructed in the service area of Brunswick County Public Utilities.
d) Except when necessary in making connections to other lines the contractor shall
install all force main piping with the pipe bells facing in the direction of flow such
that the fluid flows over the spigot end of the pipe, and not against the spigot end
of a pipe, within the bell-and-spigot assembly.
2.0 Materials for Construction
a) All materials used for force main construction shall be of good quality and, to the
maximum extent possible, manufactured in the United States. Any materials
deemed unsuitable by county staff or the Engineer shall not be used by the
contractor.
3.0 References
a) ASTM D1784 — Rigid PVC Compounds and Chlorinated PVC (CPVC)
compounds
b) ASTM D1785 - PVC plastic pipe, schedules 40, 80 and 120
c) ASTM D2241 - Poly(Vinyl Chloride) (PVC)plastic pipe (SDR-PR)
d) ASTM D3139 - Joints for plastic pipe using elastomeric seals
e) ASTM F477 - Elastomeric seals for jointing plastic pipe
f) ASTM D2467— Socket Type PVC plastic pipe fittings - Schedule 80
g) ANSI/AWWA C151 /A21.51 —Ductile Iron Pipe (DIP)
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
h) AWWA C600—Standard for Installation of Ductile Iron Pipe (DIP)
i) AWWA C605 -- Standard for Installation of Polyvinyl Chloride Pipe (PVC)
4.0 Pipe Materials
a) Force main piping shall be:
1) 4— 12 inches: Polyvinyl Chloride (PVC), AWWA C900, DR-18 minimum
2) Larger than 12-inch: Polyvinyl Chloride (PVC), AWWA C905, DR-18
minimum
3) Ductile Iron Pipe, (DIP), ANSUAWWA C150/A21.50, ANSUAWWA
C151/A21.51 (only with express written permission of Brunswick County
Utilities or Engineering Department)
4) Fusible Polyvinyl Chloride, (FPVC), ASTM cell classification 12454,
Fusible C900 with minimum DR 18 for 4 — 12-inch diameter; Fusible
C905 with minimum DR 18 for 14 —24-inch diameter; Fusible C905 with
DR 25 for 30-inch diameter; Fusible C905 with DR 32.5 for 36-inch
diameter
5) High Density Polyethylene, (HDPE), PE 4710, ASTM D2239, minimum
DR-9
6) Polyvinyl Chloride (PVC), Schedules 40 and 80, ASTM D1785.
b) Minimum force main piping size: 4 inch(unless approved Low Pressure Sewer).
c) Low pressure sewer system force main piping size: 2 inches through 4 inches
shall be minimum SDR-21. Refer to Technical Specification TS021.01: Low
Pressure Sewer Systems with Grinder Pumps.
d) DIP shall be lined internally with Protecto 401 ceramic epoxy lining or approved
equal for internal corrosion resistance.
e) DIP shall have an exterior bituminous asphaltic coating for corrosion resistivity.
f) DIP pressure class per pipe size shall be:
Pipe Size (inches) Pressure Class (psi)
4 - 12 350
14 - 20 250
24 - 64 200
g) PVC sewer force main piping shall be factory dyed industry standard green to aid
in field identification. PVC reuse effluent transmission piping shall be factory
dyed industry standard purple to aid in field identification. HDPE piping shall
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
have a factory applied green strip. All pipe used for force main construction shall
be labeled or otherwise identified as conveying wastewater per NCDENR
"Minimum Design Criteria for the Fast Track Permitting of Pump Stations and
Force Mains".
h) HDPE pipe shall conform to ASTM D3035 and ASTM F714 with PE 4710
material
i) HDPE force mains shall be joined by the thermal butt fusion method in
accordance with ASTM A2657 and the manufacturer's installation
recommendations.
j) Fusible PVC force mains shall be joined by the thermal butt fusion method in
accordance with ASTM D638 and the manufacturer's installation
recommendations.
k) All piping shall be clearly marked with Manufacturer, Type, Pressure Class
and/or DR number, and date of production.
1) Avoid prolonged exposure of PVC and Fusible PVC piping to ultraviolet (UV)
exposure. Any piping obviously "dulled" in color due to prolonged sun exposure
shall be not be used.
m) All PVC force main piping installed within the NCDOT rights-of-way shall be a
minimum DR-18 rated pipe.
5.0 Materials and Requirements for Restrained Joints,Piping, and Fittings
a) Restrained joints are required to prevent movement of system piping caused by
forces in or on buried piping, tees, valves, branches, bends, plugs, etc.
b) Restrained joints shall be installed as shown on the approved plans, standard
details, or as directed by county staff or the Engineer.
c) Concrete thrust blocking shall be installed as shown on the approved plans,
standard details, or as directed by county staff or the Engineer.
d) All carrier pipe installed inside a casing shall be pressure class 350 ductile iron
pipes per county standard details with restrained joints.
e) All restrained joint systems shall have a pressure rating equal to or greater than
that of the pipe on which they are installed.
f) Restraint type gaskets that provide internal restraint by means of stainless-steel
inserts embedded within the gasket are not permitted for use in Brunswick
County.
g) Ductile Iron Pipe (DIP)
1) Must have written permission of county staff to use DIP
2)
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
2) Install restraints in strict accordance with the manufacturer's
recommendations.
3) All ductile iron horizontal directional drill and bore-and-jack installations
shall use boltless, integral, positive locking restraint systems that allow for
joint deflection and disassembly should the need arise. The restrained
joint system shall be a manufacturer's standard restrained joint system
such as American (Flex-Ring or Lok-Ring), U S Pipe (TR-Flex), or
Griffin(Snap-Lok), or approved equal.
Note: the boltless, integral, positive locking restraint systems are also
acceptable for use in open cut pipe installations.
4) External bell restraint harness shall have ductile iron glands. The
dimensions of the gland shall be such that it can be used with the standard
mechanical joint bell. Twist off nuts with preset factory torque setting
shall be used to ensure proper actuation of the restraint device. All nuts,
bolts, and fasteners shall be high strength alloy steel. Mechanical joint
restraints shall conform to ANSUAWWA A21.11/C111 and
ANSUAWWA A21.53/C153, latest revision.
The restrained y
system shall be a manufacturer's standard restrained
joint
joint system manufactured by EBAA Iron, Inc., Smith-Blair, Inc., JCM,
Inc., or approved equal.
5) Restraint for valves and fittings shall have ductile iron glands. Twist off
nuts with preset factory torque setting shall be used to ensure proper
actuation of the restraint device. All nuts, bolts, and fasteners shall be
high strength alloy steel. Mechanical joint restraints shall conform to
ANSI/AWWA A21.11/C111 and ANSUAWWA A21.53/C153, latest
revision.
The restrained joint system shall be a manufacturer's standard restrained
joint system manufactured by EBAA Iron, Inc., Smith-Blair, Inc., JCM,
Inc., or approved equal.
6) Stainless steel rodding and fasteners, Type 304 minimum, is acceptable
per county standard details. Manufacturer's restraint system and/or glands
are preferred in lieu of rodding.
h) Polyvinyl Chloride Pipe (PVC)
1) Install restraints in strict accordance with the manufacturer's
recommendations.
2) External bell restraint harness shall have ductile iron glands. The
dimensions of the gland shall be such that it can be used with the standard
mechanical joint bell. Twist off nuts with preset factory torque setting
shall be used to ensure proper actuation of the restraint device. All
nuts, bolts, and fasteners shall be high strength alloy steel.
Mechanical joint restraints shall conform to ANSI/AWWA A21.11/
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
C111 and ANSI/AWWA A21.53/C 153, latest revision.
The restrained joint system shall be a manufacturer's standard restrained
joint system manufactured by EBAA Iron, Inc., Smith-Blair, Inc., JCM,
Inc., or approved equal.
3) Restraint for valves and fittings shall have ductile iron glands. Twist off
nuts with preset factory torque setting shall be used to ensure proper
actuation of the restraint device. All nuts, bolts, and fasteners shall be
high strength alloy steel.
Mechanical joint restraints shall conform to ANSI/AWWA A21.11/C111
and ANSI/AWWA A21.53/C153, latest revision.
The restrained joint system shall be a manufacturer's standard restrained
joint system manufactured by EBAA Iron, Inc., Smith-Blair, Inc., JCM,
Inc., or approved equal.
4) Stainless steel rodding and fasteners, Type 304 minimum, is acceptable
per county standard details. Manufacturer's restraint system and/or glands
are preferred in lieu of rodding.
6.0 Push On, FlangedPipe and Pi a Joints s
a) DIP joints (all joints shall have a minimum two hundred (200) psi pressure rating
or be equal to the pressure rating of the pipe):
1) Push on joints with elastomeric gaskets shall conform to ANSI A21.11 /
AWWA C111. Joints shall be the integral bell and spigot type connection.
Gaskets shall be factory installed integral with the bell joint.
2) Mechanical joints shall conform to AWWA C111. Bolts shall be high
strength alloy steel per AWWA C111.
3) Flanged joints shall conform to ANSI A21.11 / AWWA C115. Bolts shall
be high strength alloy steel per AWWA C111.
b) PVC joints (all joints shall have a minimum one hundred fifty (150) psi pressure
rating or be equal to the pressure rating of the pipe):
1) Push on joints with elastomeric gaskets conforming to ASTM D3139 and
ASTM F477. Joints shall be the integral bell and spigot type connection.
Gaskets shall be factory installed integral with the bell joint.
7.0 Fittings and Specials
a) Fittings and specials shall be class 54 ductile iron, mechanical joint in accordance
with ANSI/AWWA C111/A21.11, ANSI/AWWA CI53/A21.53, with a (200)
pounds per square inch minimum pressure rating unless otherwise shown or
specified. Ductile iron fittings and specials shall be lined on the interior with
ceramic epoxy Protecto 401 or equal and coated on the exterior with a
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
bituminous asphaltic coating for corrosion resistivity.
b) Provide adaptor glands, gaskets, etc, as required to accommodate any differences
in pipe and fitting dimensions.
c) Fittings and specials for HDPE and Fusible PVC shall conform to all applicable
ASTM D3261 (HDPE) and other ASTM specifications and all manufacturers'
recommendations.
d) In corrosive soils sacrificial corrosion anodes and/ or poly wrap shall be required
around ductile iron pipe and DIP fittings at the direction of either county staff and
/or the engineer.
8.0 Gate Valves
a) Cast iron body, bronze mounted, double disc, resilient seated in conformance with
AWWA C509 or C515, with a minimum working pressure of one hundred fifty
(150)psi. Valves shall have a two (2) inch operating nut and open left, and
shall have 0-ring seals. Valve ends shall be mechanical joint or push on
joint. Gate valves shall be installed in the upright vertical position. Valves
shall be manufactured by Mueller, American Darling, Clow Corporation,
or approved equal.
b) Resilient gate valves may be used for tapping an existing, active force main.
c) All force main gate valves shall be set true and plumb and have a valve box
centered over the valve per county standard detail.
d) To the maximum extent possible all gate valves shall be located outside of roads,
streets, driveways, and other paved areas.
e) Earth fill shall be carefully tamped around each valve box to a distance of four(4)
feet on all sides of the box, or to the undisturbed trench face if less than four (4)
feet from the valve box.
9.0 Plug Valves
a) Non-lubricated eccentric type with resilient faced plugs, furnished with flanged
joint connections, port areas for valves through twenty (20) inch diameter shall
be minimum eighty (80) percent of full pipe area, and port areas for valve
twenty-four (24) inch diameter and larger shall be minimum seventy (70)
percent of full pipe area, with a minimum one-hundred fifty (150) psi pressure
rating, cast iron body, plugs shall be cast iron also, of one piece construction,
resilient faced, with all exposed nuts, bolts, springs, washers, etc, a minimum
Type 304 stainless steel. Plug valves shall be DeZurik, Milliken, or
approved equal.
b) Valves shall be resilient faced plug valves unless otherwise noted on the plans.
c) All force main plug valves shall be set true and plumb and have a valve box
centered over the valve per county standard detail.
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
d) To the maximum extent possible all plug valves shall be located outside of roads,
streets, driveways, and other paved areas.
e) Earth fill shall be carefully tamped around each valve box to a distance of four(4)
feet on all sides of the box, or to the undisturbed trench face if less than four (4)
feet from the valve box.
10.0 Location of Initial Isolation Valve from a Pump Station
a) Unless otherwise shown on the approved plans, or as directed by the Engineer and
/ or county staff, the contractor shall install a force main isolation valve within
one hundred and fifty (150) feet from a sewer pump station valve vault, and
thereafter as shown on the approved plans.
11.0 Valve Boxes and Collars
a) Install per County Standard Details at each force main valve.
b) Cast iron or ductile iron, screw type, with flared base, length as required for the
buried valve, set plumb and true.
c) The word"SEWER" or"REUSE" shall be cast in the cover.
d) The contractor shall spray paint the cover green (sewer) or purple (reuse) after
installation.
e) No part of the valve box is to rest on the buried valve bonnet — use masonry
support per county standard detail.
f) Install precast concrete ring around valve box in unpaved non-traffic areas per
county standard detail.
g) Valve boxes in traffic areas to be AASHTO H-20 load rated and installed per
county standard detail.
12.0 Valve Markers
a) Valve markers shall be installed in rights-of-way and utility easements as shown
on the County Standard Details.
b) Valve markers shall be concrete if located in the right-of-way, extend thirty-six
(36) inches above finished grade, with the cast MV (main Valve), AV (air release
valve), or BO (blow off) facing the nearest street — refer to County Standard
Details. Valve markers in utility easements shall be fiberglass, extend sixty (60)
inches above finished grade, and be installed with the flat face facing the valve for
installation of the marking decal on the valve marker.
c) Valve marker shall be painted green for sewer force mains and purple for reuse
force mains.
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
d) Concrete valve markers shall have a bronze, stamped, insert on top of marker per
County Standard Detail.
13.0 Force Main Air and Vacuum Release Valves (AVRVs)
a) Combination air/vacuum valves shall be installed on waste water force mains as
follows:
1) Air and Vacuum Valve: The air and vacuum valve shall be an ARI, Inc,
Model D-025 combination air/vacuum valve, or approved equal.
2) The contractor shall install the AVRVs as shown on the plans, and may
need to adjust actual AVRV locations in the field based upon actual field
conditions to ensure the AVRVs are installed at the true high points.
Actual installed mark up drawings shall be maintained by the contractor so
that accurate asbuilts drawings can be prepared for the County.
3) The combination air / vacuum valve shall be installed in a five (5) foot
diameter precast manhole with a ring and cover assembly, with the
manhole lid offset from the AVRV such that the AVRV is not directly
underneath the access opening, or in a Quazite or GlasMasters polymer
concrete box, or approved equal, Tier 22 rating for both the box and cover,
with the box opening offset from the ARV such that that ARV is not
directly underneath the access opening, per County Standard Details for
air release valves.
4) Maintain adequate cover over force mains at AVRV installations to ensure
top of manhole or polymer concrete box is flush with the surrounding
ground. The contractor shall adjust the force main depth to ensure
adequate cover for the AVRV assembly per County Standard Details.
5) The combination air/vacuum valve shall allow unrestricted venting or re-
entry of air during filling or draining of force main. The valve shall have a
large orifice for the air& vacuum function and a smaller orifice for the air
release function contained within a single valve body.
6) The small air release orifice shall be a Type 304 stainless steel orifice
rated for working pressures up to one hundred fifty (150)psi minimum.
7) The combination air / release valve shall exhaust large quantities of air
during the filling of the pipeline and automatically close after all the air
has been vented.
8) The valve shall continue to release small quantities of air under pressure as
needed to vent entrained air, and shall also automatically open to allow
atmospheric pressure to re-enter the force main during draining or
whenever a negative pressure occurs.
9) The valve body shall have a one (1) inch NPT tap near the bottom to
permit cleanout of accumulated debris from the valve body.
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
McDonaldseries stainless steel saddle
10) Valves shall be mounted on 3800 e e
with Type 304 stainless steel or better valve and nipples.
11) Provide two (2) inch inlet, outlet, and blowoff valve, and one (1) inch
flushing drain piping to include a one (1) inch flushing valve.
12) Valve internals to be Type 304 stainless steel linkage with a single float
design. Bronze or plastic internal components are not acceptable.
13) The AVRV assembly shall have a stainless steel pressure gauge installed
that is angled for ease of viewing from the manhole or box cover — see
County Standard Details.
14.0 Pipe Marking Tape, Locating Wire, and Electronic Marker Balls
a) Marking tape shall be three (3) inches wide, green or purple in color, bearing
continuous message "CAUTION SEWER LINE BURIED BELOW" or
"CAUTION REUSE LINE BURIED BELOW". Tape shall be made of plastic or
other permanent material and shall be buried continuously above the force main at
a depth of eighteen(18) inches below finished grade.
b) All force mains shall have a#12 AWG, high strength copper clad steel conductor
(HS —CCS) such as Copperhead Superflex, Pro Trace High Flex, or approved
equal, with HDPE insulation, and rated for direct burial. Listed and approved
underground connectors shall be used for all splices. The wire shall be brought
up into a valve box at 1,000 feet maximum intervals to provide wire access points.
The wire shall be taped to the top of the force main at minimum ten (10) foot
intervals.
The contractor shall be required to perform a signal strength test of the installed
tracer wire at the end of the project with County Engineering and / or Public
Utilities staff present. Refer to County Standard Details for tracer wire
information.
b) In addition to the tracing wire, electronic marker balls shall be installed on the
force main in accordance with Brunswick County Technical Specification TS
035.01: "Electronic Marker Balls for Water Mains and Sewer Force Mains".
15.0 Adjacent Facilities
a) Separation of Sewer Force Mains and Water Mains
1) Horizontal and Vertical Separation
Minimum horizontal separation between water mains and sewer force
mains shall be ten (10) feet. The distance shall be measured edge of pipe
to edge of pipe.
2) Should ten (10) foot separation not be feasible, then the water main may
be located closer to the sewer force main provided that:
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
a) It is laid in a separate trench,
b) It is laid in the same trench with the water main located at one side
on a bench of undisturbed earth,
c) In either of case (a) or (b) above, the crown elevation of the force
main shall be at least eighteen (18) inches below the invert
elevation of water line.
3) Force mains crossing underneath water mains shall be laid to provide a
minimum vertical separation of eighteen (18) inches between the invert of
the water main and the crown elevation of the sewer main. The crossing
shall be arranged perpendicularly so that the force main joints will be
equidistant and at least ten(10) feet from the crossing in each direction.
4) If it is impossible to maintain the required horizontal and vertical
separation as described above, or anytime a force main must be laid above
a water main, then both the water main and force main must be encased in
ferrous sleeves. Sleeves shall have sealed ends. If the water main is ferrous
with joints equivalent to water main standards, then the water main does
not have to be encased within an additional sleeve.
5) Mechanical joints will be required for the transition in the force main at
water main / force main crossings. Fernco couplings are not permitted to
be used. Special structural support for the water and force mains may be
required at the discretion of County staff
6) Force mains shall not be laid in the same trench with gas lines or electric
wiring.
7) No force main shall be placed within twenty-five (25) feet of a well
utilized for potable water purposes.
8) Minimum specifications for force mains placed between twenty-five (25)
feet and fifty (50) feet of a well utilized for potable water shall meet or
exceed the requirements of Class 350 ductile iron pipe with watertight
joints conforming to ANSI A21.50/A21.51.
15.0 General Construction Installation
a) Install all force mains as shown on the approved plans to line and grade.
b) Where unsuitable soils are encountered pipe shall be bedded on#57 stone.
c) The contractor is responsible for dewatering all trenches prior to force main
installation. Include cost of dewatering, backfill, and erosion control in unit cost
for pipe — separate payment for these items will not be made by the County.
Stone installation shall not be used as a dewatering device.
d) All jointing of pipe shall be in conformance with the manufacturer's
recommendations.
TS 022.01

May 2019 Brunswick County Engineering Department Revision 1.07
e) Defective pipe and/or fittings shall not be utilized in force main construction.
f) Install all restrained joints in accordance with manufacturer's recommendations.
g) Existing gravity manholes that have sewer force mains entering them shall be
coated on the interior per county technical specification TS 020.01: Gravity
Sanitary Sewer Systems — Section 5.0 (a) (15) and may only be allowed by
permission of county staff. It may be required to replace the existing manhole
with a precast polymer concrete manhole.
h) New gravity manholes, and manholes installed to allow a new force main to
connect to an existing sewer system, shall be precast polymer concrete sections
conforming to ASTM C478 as manufactured by Armorock, Meyer Polycrete, or
approved equal. Riser section joints shall be bell and spigot/ ship-lap design with
butyl mastic and / or rubber gaskets (ASTM C990) so that on assembly the
manhole base, riser(s), and top sections make a continuous and uniform manhole
structure. All fasteners, wedge anchors, bolts, hooks, etc., within the manhole
shall be Type 316 stainless steel or better—no mild steel will be allowed.
h) County staff must be present at all connections to existing force mains. Forty-
eight(48) hours' notice is required to schedule a force main connection.
16.0 Hydrostatic Testing of Force Mains
a) All force mains shall be successfully hydrostatically pressure tested per AWWA
standards at a pressure of one and one-half times the rated working pressure, but
in no case shall the test pressure be less than one hundred fifty (150) psig for a
minimum of two (2) hours.
b) All force main pressure testing shall be witnessed and approved by county staff
and/or the Engineer.
c) Minimum forty-eight (48) hours notice is required to schedule a force main
pressure test with county staff.
d) Horizontal directional drills (HDD) shall be pressure tested as noted on the county
HDD standard details and will be tested a second time as part of the overall
system pressure test once the HDD force main has been connected to the installed
force main system.
TS 022.01

September 2012 Brunswick County Engineering Department Revision 1.0
Technical Specification 035.01
ELECTRONIC MARKER BALLS FOR
WATER AND SEWER FORCE MAINS
1.0 General
a) It is the intent of this specification to provide technical guidance on the proper
installation of electronic marker balls for water and sewer mains sewer mains
installed in the service area of the Brunswick County Public Utilities Department.
b) The standard utility line locator material is a #12 AWG, high strength, copper
clad steel conductor (HS — CC) tracer wire such as Copperhead SuperFlex, or
approved equal.
c) Electronic marker balls are also required for:
1) Non-ferrous water mains and sewer force mains eight (8) inches in
diameter and larger,
2) Ferrous water mains and sewer force mains greater than twelve (12)
inches in diameter.
d) Contact Brunswick County for additional information and questions concerning
the proper installation and required usage of electronic marker balls.
2.0 Materials
a) Electronic marker balls shall be:
1) Water: 3M Scotchmark Electronic Marker, model # 1403-XR, 4 — inch
diameter, colored blue
2) Sewer: 3M Scotchmark Electronic Marker, model # 1404-XR, 4 — inch
diameter, colored green
3) Reclaimed Water: 3M Scotchmark Electronic marker, model #1408-XR,
4 - inch diameter, colored purple
b) The markers consist of a sealed shell containing a passive antenna with a low
frequency resonance circuit tuned to a certain frequency depending upon the
associated utility. For water and sewer systems the frequencies are:
1) Water: 145.7 kHz
2) Sewer: 121.6 kHz
3) Reclaimed Water: 66.3 kHz
c) The locator sends a signal to the marker, which energizes the marker, and the
marker reflects the signal back to the locator. The markers are installed during
new construction or repairs to system mains as specified herein.
TS 035.01

September 2012 Brunswick County Engineering Department Revision 1.0
3.0 Requirements for Electronic Marker Placement
a) Electronic marker balls shall be placed at:
Tees Bends Repair points
Crosses Utility crossings Service laterals
Casing ends Water crossings Service stubs
Arcs Rail crossings
and at all changes in pipe diameter.
b) Refer to the Brunswick County Electronic Marker Ball Placement
Standard Detail.
4.0 Electronic Marker Installation, Spacing, and Depth
a) Minimum depth of burial: 18 inches
b) Nominal depth of burial: 24 inches
c) Maximum depth of burial: 48 inches
d) Minimum height above the main: 6 inches
e) Minimum distance between markers: 3.5 feet
f) Nominal distance between markers: 100 feet
g) Maximum distance between markers: 200 feet
h) On bends and lateral pipe deflections place one marker ball every (25) feet
i) Markers to be installed above any installed main marking tape
j) Refer to the Brunswick County Electronic Marker Ball Placement
Standard Detail.
TS 035.01