WQ0041548_Sewer Extension Permit Status Update_20220321

INCDENRIDWR
Rik
NEW BERN
CITY OF NEW BERN
DepaLtLuent of Public Utilities
Water Resources
527 NC Hwy. 55 West, P.O. Box 1129
New Bern, NC 28563-1129
[phone]
March 21, 2022
Mr. Robert Tankard
Surface Water Protection Section
Division of Water Quality — Washington Regional Office
943 Washington Square Mall
Washington, NC 27889
Subject: Permit No. WQ0041548
Engineer's Certification
Dear Mr. Tankard,
MAR 2 9 2022
Water Quality
rtaglonal Operations S-vIton
Washington Regwnu vmce
The City has recently completed and tested all of the proposed sanitary sewer improvements as
described in the referenced Wastewater Collection System Extension peiuiit. Enclosed please find
the following documents as certification that the project has been completed in accordance with
the conditions of the approved permit:
1. Engineer' Certification
2. Issued Record Drawings for the Project (24"x36")
3. Technical Specifications for the Project
Please feel free to contact me at [phone] if there should be any questions or if additional
information is needed.
Enclosure
Sincerely,
Jordan B. Hughes, P.E.
City Engineer
Everything comes together here.

CERTIFICATION CHECKL T ��VEDRvcc�
To be completed by the certifying engineer prior to operation of the permitted sewers, per 15A NCAC 021116!"
Certifying Engineer: 3' 9 AI l$ 3 rIl S
Certification Review Date: 10/211tt
Project Name: Lift Station No. 29 Rehabilitation
Permit No. WQ0041548 Project County: Craven
1) Has permittee information changed since the permit was issued (or last modified): change of mailing address,
change of ownership, transfer from developer to HOA/POA, etc. n Yes 1{'No
• If yes, please provide either a change of ownership form or new contact information. Note that transfer of
permits from the developer to the HOA/POA must occur with the first certification.
2) Have the as -built drawings have signed, sealed, and dated by an N.C. PE? Ees ❑,No
3) Final Engineering certification? beees n No ..
• If Partial Engineering certification, provide detailed narrative induding""what .isbeing certified in the current
phase, what was previously certified (if appli ble), and what is left to becertified.
4) Adequate information related to sewer lines: Yes n No n N/A
• Three feet minimum cover has been provided for all sewers unless ferrous pipe was installed.
• Minimum diameters for gravity sewers are 8-inches for public lines and 6-inches for private lines.
• Manholes have been installed: At the end of each line, at all changes in grade, size, or alignment, at all
intersections, and at distances not greater than 5 feet; minimum diameter shall be 4.feet (48-inches).
5) Adequate information related to pump stations: Yes n No n N/A K .
• Ensure power reliability option was selected per 15A NCAC 02T.0305(h).
6) Was project construction completed in accordance with all of the following: Yes
MAR 2 9 2022
Water ClunIty
rfogiirsIL'' ns Section
1)4-Unal Office
No ❑ N/A
• 15A NCAC 02T, Minimum Design Criteria (MDC) for the permitting of Gravity Sewers (latest version), and MDC
for the Permitting of Pump Stations and Force Mains (latest version)?
If not, a variance approval is required in accordance with 15A NCAC 02T.0105(b), prior :tacertification and operation.
• Contact the Central Office to discuss the variance to determine a course of action:
• Applicant must submit two copies of the variance request form, plans, specifications, calculations, and any other
pertinent information to the Central Office (one hard copy, one digital copy).
• The central office will review the variance request, and if approvable, specific language regarding the variance
will be incorporated into the permit, either via a special condition or a supplementary letter. A copy of the
reissued permit with variance language or the variance letter must be maintaine with the original documents.
7) Does the project contains high priority lines (15A NCAC 02T .0402(2))? ❑Yes No
• If yes, ensure that the permit already contains the necessary condition related to high priority lines 15A NCAC
02T.0403 (a)(5). If the permit does not include this language, the Fast Track reviewer will reissue the permit with
the appropriate language.
8) Are Permit modifications are required for any changes resulting in non -comp ' nce with this permit (including but not
limited to pipe length changes of 10% or greater, change in flow, pump n design capacity design change of 5% or
greater, and/or change in the number/type of connections)? ❑ Yes No
• If yes, a permit modification request must be submitted to the appropriate Regional Office, and a modified
permit with revised certification must be issued prior to certification and operation..
NC DWR — Water Quality Regional Operations Section 943 Washington Square Mall, Washington, NC 27889
Washington Regional Office
Phone: [phone] FAX: [phone]

FAST TRACK SEWER ENGINEERING CERTIFICATION
PERMITTEE:
PERMIT #:
PROJECT:
ISSUE DATE:
City of New Bern
WQ0041548
Lift Station No. 20 Rehabilitation
March 16, 2020
This project shall not be considered complete nor allowed to operate in accordance with Condition 7 of
this permit until the Division has received this Certification and all required supporting documentation. It
should be submitted in a manner that documents the Division's receipt.'Send the required documentation
the Regional Supervisor, Water Quality Regional Operations Section at the address at the bottom.
Any wastewater flow made tributary to the wastewater collection system extension prior to completion
of this Certification shall be considered a violation of the permit and shall subject the Permittee to
appropriate enforcement actions. The Permittee is responsible for tracking all partial certifications up
until a final certification is received. A Final Certification shall be a complete set of record drawings and
design calculations regardless of whether partials have been submitted.
PERMITTEE'S CERTIFICATION
I, the undersigned agent for the Permittee, hereby state that this project has been constructed pursuant
to the applicable standards & requirements, the Professional Engineer below has provided applicable
design/construction information to the Permittee, and the Permittee is prepared to operate & maintain
the wastewater collection system permitted herein or portion thereof.
Clary
Printed Name, Title Signature Date
ENGINEER'S CERTIFICATION
I, BAN S. NJ& I1 3 , as a duly registered Professional Engineer in the State of North Carolina,
having been authorized to observe (periodically, n weekly, I I full time) the construction of the
project name and location as referenced above for the above Permittee hereby state that, to the best of
my abilities, due care and diligence was used in the observation of the following construction:
a 84--gallon per minute pump station with duplex pumps, on -site audible and visual high water alarms,
telemetry, and a {portable generator receptacle with telemetry OR permanent generator with automatic
transfer switch}; as well as approximately 1325 linear feet of 4-Inch force main to serve as part of the Lift
Station No. 29 Rehabilitation project that collects domestic and commercial wastewater into the City of
New Bern existing sewerage system; such that the construction was observed to be built within
substantial compliance of this permit; 15A NCAC 02T; the Division of Water Resources' (Division) Gravity
Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design
Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as
applicable; and other supporting materials.
North Carolina Professional Engineer's Seal w/signature & date:
\-\\i }C q///
-4177
cit- • • �O!/��i
� • OES���e FBI
Final El Partial (include description)
'Q SEAL r-; 1
• 0::"") 29
Certification Comments/Qualifiers (attach if necessary):
NC DWR — Water Quality Regional Operations Section
943 Washington Square Mall, Washington, NC 27889

fig
CEIVEDMC p/oyyp
4 j of New Bern Water Resour;
Pump Station Design Calculations
MAR 2 9 2022
Project: IS# Rebuild Date: 11-Feb-20
Quality
Regi�r^^,' Uperatlona Section
Review: J • ff office
I. Wastewater Flows:
A. Flow from Exisitng Users 15,000 gpd
B. 15,000 gpd
C. 0 gpd
D. 0 gpd
Total Flow Tributary to Proposed LS = 30,000 gpd
H. Peaking Factor:
* Peaking factor calculated using NCDENR recommended formula of
PF = (18 + IP)/(4 + -VP), where P is the service population. Service population is
calculated assuming 75 gpd per person.
Proposed Flow: 30,000 (/ 75) = Service Population (P; 400
Calculated PF: 4.02
III. Pumping Rate:
Average Daily Flow: 30,000 gpd =
Peak Flow:
120,600 gpd =
Design PF: 4.02
20.83 gpm
83.75 gpm
Design Pumping Rate:
84 gpm
IV. Velocity in Proposed Force Main:
* Wastewater velocity occurring in the proposed force main system is calculated
using the continuity equation: V = (0.409Q)/D2
Proposed Force Main Size:
4 in
Velocity of Wastewater: 2.14 fps
> 2.00 fps, Velocity O.K.
Page 1 of 7

(_ f of New Bern Water Resoun.
Pump Station Design Calculations
V. Cycle Times and Active Storage.
* Active storage shall be calculated using V=TQddf(1-Qddf/Q ).
Cycles per hour shall be 4 and the time (T) between cycles shall
be 15 min.
Qd 21 gpm
QinanP 84 gpm
T 15 min.
Active Storage (V) 236 gal.
VI. Wet Well Dimensions and Float Elevations:
Wet Well Diameter:
Volume Per Vert. Foot:
4 ft
94 gal/ft
Required Storage Depth: 2.51 ft
Rim Elev.
Invert of Influent
High Level
Lag Pump On
Lead Pump On
Pumps Off
Low Level
Wet Well Bottom
18.50
10.90
10.90 At the influent invert
10.40 0.5' below the High Level setting
10.20 0.2' below the Lag Pump On setting
7.69 Lead Pump On - Req. Storage Depth
7.19 6" below the Pumps Off setting
5.19 Level to completely submerge pumps,
2.5' below Pumps Off setting.
Note: Additional storage depth provided
Page 2 of 7

C, of New Bern Water Resourn
Pump Station Design Calculations
VII. Lift Station & Force Main Piping:
A. Lift Station Piping: Pipe Dia: 4 in
Item
No. of Units
L/D Ratio
Equivalent Length
Straight pipe
9
-
20
45° bend
0
16
0
90°bend
2
30
20
22.5° bend
0
9
0
Branch Tee Flow
1
60
20
Check Valve
1
135
45
Gate Valve
2
17
11'
Total Equivalent Length:
B. Force Main Piping: Pipe Dia: 4 in
116 ft
Item
No. of Units
LTD Ratio
Equivalent Length
Straight pipe
1400
-
1400
45°bend
2
16
11
90°bend
2
30
20
22.5° bend
0
9
0
Branch Tee Flow
1
60
20
Check Valve
0
135
0
Gate Valve
1
17
6
Total Equivalent Length:
C. Total Equivalent Force Main Length:
1457 ft
Total Length of Lift Station Piping: 116 ft
Equivalent Force Main Diameter Length: 116 ft of 4 inch pipe
Total Length of Force Main Piping 1457 ft
Total Equivalent Length of Force Main 1,573 ft
Page 3 of 7

C of New Bern Water Resouri,
Pump Station Design Calculations
VIII. Design Point for Pump Selection:
A. Static Head:
The proposed force main will discharge into the common force main located along
Racetrack Rd. This 6" FM is short in length and only has one other pump station
that discharges to it. The distance from the tie-in point the discharge end of the
common FM is only 520', so for the purpose of the head calculation, the 520' of 6"
FM is been added to the total FM length as 80' of 4". The static head due to
elevation will be the difference between the high point in the force main and the
"pump off" elevation in the wet well, which is (18.30').
Static Head (discharge)
Static Head (elevation)
All LS On
Only Proposed LS On
5.00 ft
0.00 ft
18.30 ft
18.30 ft
Total static Head 2330 ft
1830 ft
B. Dynamic Head Loss at Design Pumping Rate:
* Dynamic Head loss shall be calculated using the Hazen -Williams formula:
hf = L [(10.44Q ^ 1.85)/(C ^ 1.85 *D ^4.87)], assuming C=120 for the PVC force main.
L = Total equivalent length of force main piping.
QPrimP 84 gpm
L 1573 ft
D 4 in.
C
120
h f (design punip rate) 9.93
C. Design Point for Pump Selection:
The design point for the pump selection will be the design pumping rate at the and
corresponding system head.
Design,Bohit
84 gpm @` . 33 ft.;TDH
Page 4 of 7

C • of New Bern Water Resoun
Pump Station Design Calculations
IX. Pump Selection:
The following pump will be used for the proposed project.
•
NP 3102 MT 3- Adaptive 464
Prtericd scr.p &1 icartWhendarvrrll411 kkelfor P+aaWr!b
ram inter3pPYntiom. Pont* to be mire drd with W W-phr.
for f+m better dsa►u r slParu. MWog rbased Or* nwith high
403pdooe4redi.
Technical specification
Corrftu nkto n
Cwvu rrmdmta
a xylem trmrd
Water, pme naoa,3P.2 F,62.41411P,L689t6-5it'/i
.ki
!I' r
-
I
I
i
I
I
,�� -J a
i
I\.r_.
i
I i � I
0
102 211 Jp 433 ESA 140 IN co comu S
Mrear we64r tateratl.. Mo
llltmnm IAU.NL-10 P-Sifal poltratien, Wit
Shp
prFr*imp nr , tOsdr+V� rn
161 armi t6
Pump information
Materials
IrprfrrlbNter
102 ram
Obmeryr noottrr
31.SA6loch
Ykttiam.r
!maw
Iardkon"
Smv kanIna orextl
Ow oral bon
[mtriby LW Wdwr
cra d m 717PRO
100 me
1745 rpm
61e44
mrrd rrd
7
lhpfrrt
Nod
Page 5 of 7

�. of New Bern Water Resour
Pump Station Design Calculations
.X. System Curve:
Flow (gpm)
System Head ('1'DH)
All LS On
System Head (TDH)
Only Proposed LS On
Pump Head (TDH)
21
24
19
44
42
26
21
42
63
29
24
41
_ 84
33
28
39 t
105
38
33
38
126
44
39
38
147
51
46
36
60
50
40
30
20
10
0
.•
407
s
.0•
-'
0.
i
'-•
i
s
s
�-
O
50 100 150
Flow (GPM)
• System Condition
Qrd (gpm)
All LS
n
105
Only Proposed LS On
120
XI. Actual Pump Cycle Times:
Wet Well Diameter 4 ft
Pump On Elev. 10.20 ft
Pump Off elev. 7.69 ft
Active Storage
236
gal
200
Pump Curve
--— BothLSOn
Only
Proposed LS
On
System Condition
Fill Time (min.)
Pump Tim
mi
Cycles per Hour
Both LS On
11.33
2.8
4.25 •
Only Proposed L,S Or
11.33
2.38
438.
Page 6 of 7

C. of New Bern Water Resourc
Pump Station Design Calculations
XII. Buoyancy Calculations:
* Water table is assumed to be at an elevation 6" below the wet well rim elevation.
y water = 62.4 lbs/ft3 yconcrete = 150 lbs/ft' sotl = 120 lbs/ft3
Wet Well I.D. 4 ft
Wet Well Wall Thck. 6 it
Wet Well O.D
Extended Base Dia. 6.00 ft
5.00 ft
Wet Well Rim Elev. 18.50 ft
Wet Well Bottom Elev. 5.19 ft
Top Slab Thck. 10 in
Extended Base Thck. 8 in
A. Force of Water Displaced by Wet Well Structure:
Volume of Riser Sections
Volume of Extended Base
Total volume of Wet Well
261 ft3
19 ft3
280
ft3
Total Force of Water Displaced 17,472 Ibs
B. Weight of Saturated Soil Above extended Base Section:
Volume of Soil Above Ext. Base 115 ft3
Density of Saturated Soil
57.6
lbs/ft3
Weight of Soil Above Ext. Base 6,624 lbs
C. Weight of Concrete in Wet Well Structure:
Weight of Riser Sections
Weight of Extended Base
Weight of Top Slab
14,112 lbs
2,850 lbs
1,963
lbs
Total Weight of Concrete 18,925 lbs
D. Protection Against Buoyancy:
Total Buoyant Force
Total Reactant Force
17,472 lbs
(ysoil = 1201bs/ft' - y water = 62.4 Ibs/ft )
25,549 lbs > Buoyant Force, O.K.
Factor of Safety 1.46
Page 7 of 7

OT
a em brand
Pump Startup Report
Xylem Water Solutions USA Inc.
14125 South Bridge Circle Charlotte, NC 28273
Voice 704-504-8804 - - - Fax [phone]
,yG}T
a xylem brand
Report Date: January 13, 2021
I
Purchase Order No.: 1
I
Delivery NotE - -
Pump Serial Numbers: ,2010278 & 2010279 Model No.: ,3102.060-0217
Start -Up Date: jJanuary 6, 2021 I Control Panel Mfgr: I .
Project Name: 1LS-29
Project Location:
NEW BERN N.C.
Start -Up Technician: ;ALLEN ETHEREDGE
FUS# IC84183
Engineer's Contact (CITY OF NEW BERN
Phone: i262-639-7640
Engineer. 'CITY OF NEW BERN
Contractor's Contact
CITY OF NEW BERN
Phone: 1
Contractor. ICITY OF NEW BERN (INSTALLED
End User's Contact iCITY OF NEW BERN
Phone:
End User. ,C17Y OF NEW BERN
VOLTAGE & CURRENT 'CHECKS
FLA: , . 13
HP: 1 6.0
GPM: 1 • 86
TDH: 35
VOLTAGE: 230
PHASE: 3
VOLTAGE UNITS OFF:
L1-L2: 249
L1-GND: 123.6
L2-L3: I 246
L2-GND: 216.4
L1-L3: 247
L3-GND: 124.3
VOLTAGE UNITS ON:
UNIT NO. 1:
UNIT NO. 2:
UNIT NO. 3:
L1-L2: I
L1-GND:
L1-L2:
L1-GND: ,
1
L1-L2: I
L1-GND: j
L2-L3:
L2-GND:
L2-L3:
L2-GND: ;
L2-L3:
L2-GND:
L1-L3:
L3-GND: 1
L1-L3:
L3-GND: i
L1-L3:
L3-GND:
CURRENT:
UNIT NO. 1:
UNIT NO. 2:
UNIT NO. 3:
L1: i 10.5I
1
L1: 10.3,
L1:
L2: 9.9,
L2: I 10.0!
L2:
L3: I 9.91
L3: 9.81
L3: ' I
UNBALANCE CALCULATIONS VOLTAGE
UNIT NO. 1:
UNIT NO. 2:
UNIT NO. 3:
AVERAGE I
AVERAGE I I
AVERAGE
'
MAX. DEV. I
MAX DEV. I i
MAX DEV.
,
UNBALANCE I
UNBALANCE I I
UNBALANCE
i
UNBALANCE CALCULATIONS CURRENT
UNIT NO. 1:
UNIT NO. 2:
UNIT NO. 3:
AVERAGE 10.1
AVERAGE 10.01
AVERAGE
1
MAX DEV. 0.2
I
MAX DEV. , 0.21
•
MAX DEV. I
UNBALANCE
I 1.98%
UNBALANCE I 2.33%I
I
UNBALANCE I 1
DRAW DOWN TEST . ,
MANHOLE DIAMETER =
6
FT =
211.49 GAL/FT DEPTH
PRESSURE GAUGE READING
60
SEC. DRAWDOWN =
6.60
IN. = PUMP RATE OF
96.93
GPM FOR UNIT 1
psi
60
SEC. DRAWDOWN =
6.00
IN. = PUMP RATE OF
105.75
GPM FOR UNIT 2
psi
SEC. DRAWDOWN =
IN. = PUMP RATE OF
0.00
GPM FOR UNIT 3
psi
AVG PRESSURE READING , #DIV/01
FT
GAUGE ELEV FROM WATER LEVEL I FT
TDH #DIV/01 , FT
STATION CONTROLS
TYPE OF CONTROLLER
NONE
APP 500
APP 700 ;
OTHER PLC:
Msmart yes
TYPE OF LEVEL SENSOR
FLOATS ,x
PROBE ix
U.SONIC I
PRESSURE i
OTHER
SENSOR(S) ACTUATE? yes
CONDITION OF STATION
CONTROL PANEL: (clean, functioning as designed.
GUIDE RAILS PLUMB?:
yes
PUMPS RIDE RAILS: yes
PUMPS CLEAR HATCH:
yes
GENERAL NOTES:
1 3/21/2022