WQ0034093_Regional Office Historical File Pre 2018

A7A
NCDENR c
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
August 1, 2009
Mr. Scott Huneycutt, Assistant Director of Public Works
Union County
500 North Main Street, Suite 500
Monroe, NC 28112
Subject: Permit No. WQ0034093
Twelve Mile Creek Sewer Diversion Force
Main
Wastewater Collection System Extension
Union County, North Carolina
Dear Mr. Huneycutt,
In accordance with your complete application received on July 16, 2009, we are forwarding
herewith Permit No. WQ0034093 dated August 1, 2009, to Union County for the construction and
operation of the subject wastewater collection system extension. This permit shall be effective from the
date of issuance until rescinded and shall be subject to the conditions and limitations as specified
therein. This cover letter shall be considered a part of this permit and is therefore incorporated therein
by reference.
Please pay particular attention to Permit Condition 3 which requires that the wastewater
collection facilities be properly operated and maintained in accordance with 15A NCAC 2T .0403 or any
individual system -wide collection system permit issued to the Permittee.
Permitting of this project does not constitute an acceptance of any part of the project that does
not meet 1) 15A NCAC 2T; 2) the Division of Water Quality's (Division) Gravity Sewer Minimum Design
Criteria adopted February 12, 1996, as applicable; 3) and the Division's Minimum Design Criteria for
the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000, as applicable,
unless specifically mentioned herein. Division approval is based on acceptance of the certification
provided by a North Carolina -licensed Professional Engineer in the application. It shall be the
Permittee's responsibility to ensure that the as -constructed project meets the appropriate design criteria
and rules. Failure to comply may result in penalties in accordance with North Carolina General Statute
§143-215.6A through §143-215.6C, construction of additional or replacement wastewater collection
facilities, and/or referral of the North Carolina -licensed Professional Engineer to the licensing board.
Mooresville Regional Office
Location: 610 East Center Ave., Suite 301 Mooresville, NC 28115
Phone: [phone] Fax: [phone] Customer Service: 1-877-623-6748
Intarnat• www nrwaternualitv.ora
NorthCarolina
Naturally

USE THE TAB KEY TO MOVE FROM FIELD TO FIELD!
1. Owner/Perniittee:
1 a. Union County Public Works
Full Legal Name (company, municipality, HOA, utility, etc.
lb. Scott Huneycutt, P.E., Assistant director
Signing Official Name and Title (Please review 15A NCA
Application Number:
(to be completed by DWQ)
C 2T .0106 (b) for authorized signing o
lc. The legal entity who will own this system
0 Individual 0 Federal © Municipality El State/County
l d. 500 N, Main St , Suite 500
Mailing Address
1 f. NC
State
lh 70 4=2
Telephone
704 -296-4232
Facsimile
cials!
Q Private Partnership © Corporation [l Other (specify):
Monroe _._.
City
lg. 28112
Zip Code
1j. Sco ttHune1cutt(gco,union nc.us
e-mail
2. Prolect (Facility) Informal on:
2a, Twelve Mile Creek Sewer Diversion Force Main 2b. Union
Brief Project Name (permit will .w.- r�-....w�..�.-.._� ..-�......
refer to this name) County Where Project
3. Co, to .t Person:
Van Tars PE, ,Pr j t T ier alter 3a. Erica Van asset. P��. ..�._.-��...�..._��... _._.- ..-__... ...�.._.
Name and Affiliation of Someone Who Can Answer Questions About this Application
3b. 704-333-5131
Phone Number
1. Project is ® New 0 Modification
0
in
3c. Erica.VanTasse
� E-mail.
permit) If Modification, Permit No.:
2. Owner is Public (skip to Item B(3))
2a. If private, applicant will be:
© Retaining Ownership (i.e. store, church, single office, etc.) or
0 Leasing units (lots, townhomes, etc, - skip to Item B(3))
© Selling units (lots, townhomes, etc. - go to Item B(2b))
Charlotte -Mecklenburg Utilities
Owner of Wastewater Treatment Facility (W"
McAlpine Creek WWTP
Name of WWTF
Union County Public Works 5b, 16-inch
Owner of Downstream Sewer 'Receiving Se
er Siz
The origin of this wastewater is (check all that apply):
Residential Subdivision
Q Apartments/Condominiums
0 Mobile Home Perk
School
Restaurant
Office
0 Private (go to item 2(a))
2b. If sold, facilities owned by a (must choose one)
© Public Utility (Instruction C)
0 Homeowner Assoc./Developer (instruction D)
d
eY-horn .cem
F) Treating Wastewater From This Project
4b NC0024970 ._ .._.._
WWTF Permit No.
WQ0028606
Permit # of Downstream Sewer (Instruction E)
Gravity
Force Main
Retail (Stor
[�°� Institution
0 Hospital
Church
0 Nursing Horne
El Other (specify);
shopping centers)
100 Domestic/Commercial
% Industrial (attach
description.)
(RO: contact your Regional Office
Pretreatment staff)
% Other (specify):
7. Volume of wastewater to l e_allocatedor permitted for this particular pr ject. f8 gallons per day
*Do not include future flows or previously permitted allocations
If the permitted flow is zero, indicate why:
E' Pump Station, Outfall or Interceptor Line where Clow will be permitted in subsequent permits that connect to this line
Ej Flow has already been allocated in Permit No.
El Rehabilitation or replacement of existing sewer with no new flo
permit is required)
expected (see 15A NCAC 02T .0303 to determine if a
F"TA12`07

9.
Provide the wastewater flow calculations used in determining the permitted flow in accordance with 15A NCAC 2T .0114 for
the value in Item B(7) ANDIOR the design flow for line or pump station sizing if a reduced or zero flow is being requested in
Item B(7). Values other than that in 15A NCAC 2T .0114 (b) and (c) must be supported with actual water or wastewater use
data in accordance with 15A NCAC 2T .0114 (t).
O GPD
-
10. Summary of Sewer Lines to be Permitted (attach additional sheets if necessary)
Size (inches)
- 18" - -
Length (feet)
New Gravity or Additional
Force Main
10" force main replacement
Q 11, Summary of Pump Stations w/ associated Force Mains to be Permitted (attach additional sheets as necessary)
W - -
7 Pump Station Location ID see map. attached (self chosen - as shown on planslmap for reference)
I —Design Flow
Operational Point Power Reliability Option
Z (MGD) GPM @TDH 1 - permanent generator w/ATS; Force Main Size Force Main Length
0 2 - portable generator w!MTS
._. 1.70 .. 1,496@304 1 - 18-inch 15,125
Pump Station Location ID — — _ _ _ _ -_ (self chosen - as shown on planslmap for reference) _
Design Flow Power Reliability Option
(MGD) Operational Point 1 - permanent generator w/ATS; Force Main Size Force Main Length
GPM @TDH 2 - portable generator wlMTS
— — --t
— t
_1
[pump Station Location ID _ _ ___ (self chosen - as shown on planslmap for reference)
W I
a ' Design Plow Power Reliability Option
CO 1 (MGD) Operational Point 1 - permanent generator w/ATS; Force Main Size Force Main Length
GPM @TDH 2 _ portable generator wlMTS
F12. Will the wastewater flow in the proposed sewer lines or pump stations be able to be directed to another treatment facility?
1❑ Yes El No if Yes, permit number of 2nd treatment facility
11(RO — if "yes" to B,12 please contact the Central Office PERCS Unit)
3. Does the sewer system comply with the Minimum Design Criteria for the Fast Track Permitting of Pump Stations and Force
Mains (latest version), the Gravity Sewer Minimum Design Criteria (latest version) and 15A NCAC Chapter 2T as
applicable?
® Yes ❑ No If No, please reference the pertinent minimum design criteria or regulation and indicate why a
variance is requested. SUBMIT TWO COPIES OF PLANS, SPECIFICATIONS OR CALCULATIONS
PERTINENT TO THE VARIANCE WITH YOUR APPLICATION
FTA 12/07

14, ,Have the following pemrtitsicertifications been submitted for approval for the system or project to be served'?
Wetland/Stream Crossings - General Permit or 401Certification?
Sedimentation and Erosion Control Plan?
Stormwater?
Yes El No N/A
Yes El No N/A
Yes LJNo N/A
15. Does this project include any high priority lines, [see 15A NCAC 02T ,0402 (2)] involve aerial lines, siphons, or interference •
manholes)? These lines will be considered high priority and must be checked once every six months
Check if Yes:ID and provide details
1, Owner/Permittee's Certification: (Signature of Signing Official and Project Name)
/, Scott Huneycutt , attest that this application for Twelve Mile Creek Sewer Diversion Force Main has
been reviewed by me and is accurate and complete to the best of my knowledge. I understand that if all required parts of
this application are not completed and that if all required supporting documentation and attachments are not included,
this application package is subject to being returned as incomplete. Note: In accordance with North Carolina General
Statutes 143-215,6A and 143-215,6B, any person who knowingly makes any false statement, representation, or
certification in any application shall be guilty of a Class 2 misdemeanor which may include a fine not to exceed $10,000
nettles up 25„000 per violation,
nng �fficial Signa
ENGINEERING DESIGN DOCUMENTS MUST BE COMPLETED PRIOR TO SUBMI I PAL OF THIS
APPLICATION, THESE DOCUMENTS MUST INCLUDE PLAN AND PROFILE OF SEWERS, THEIR PROXIMITY
TO OTHER UTILITIES, DESIGN CALCULATIONS, ETC, REFER TO 15A NCAC 02T ,0305
F.: 2, Professional Engineer's Certification: (Signature of Design Engineer and Project Name)
0
•
1, Erica Van Tassel, PE . attest that this application for Twelve Mile Creek Sewer Diversion Force Main has
been reviewed by me and is accurate, complete and consistent with the information in the engineering plans, calculations,
and all other supporting documentation to the best of my knowledge. 1 further attest that to the best of my knowledge the
proposed design has been prepared in accordance with the applicable regulations, Gravity Sewer Minimum Design Criteria
for Gravity Sewers adopted February 12, 1996, and the Minimum Design Criteria for the Fast -Track Pemiitting of Pump
Stations and Force Mains adopted June 1. 2000 and the watershed classification in accordance with Division guidance.
Although other professionals may have developed certain portions of this submittal package, inclusion of these materials
under my signature and seal signifies that I have reviewed this material and have judged it to be consistent with the
proposed design, Note: In accordance with NC General Statutes 143-215,6A and 143-215.6B, any person who knowingly!
makes any false statement, representation, or certification in any application shall be guilty of a Class 2 misdemeanor
which may include a fine not to exceed $10,000 as well as civil penalties up to $25,000 per violation,
2a, Erica Van Tassel
Professional Engineer Name
2b K imley-Horn and Associates, Inc.
Engineering Firm
2c, 4651 Charlotte Park Drive, Suite 300
Mailing Address
2d, Charlotte
City
2g 704-333-5131 2h, 704-33 -0845
Telephone
Facsimile
2e. NC 2f, 28217
State Zip
2i E .Va Tasselekunley-horn corn
E-mail
NC PE Seal, Signature & Date
FTA 12/07

NARRATIVE
Date: May 2009
Subject: Union County Public Works
Twelve Mile Creek Sewer Diversion Force Main
Union County, NC
Project Description
The purpose of the above referenced project is to construct approximately 2.9 miles (15,125 LF) of 18"
diameter force main along Cureton Parkway and Waxhaw-Marvin Road. The described alignment is
located in Union County and replaces an existing 10" force main. The project will disturb approximately
6.9 acres of land during the construction period. The proposed force main is being constructed in order to
divert sewer flow from the Twelve Mile Treatment Plant and will tie into an existing 16" force main north
of Crane Road. The existing force main ultimately takes flow to the McAlpine WWTP.
Site Description
The majority of the project is located within existing NCDOT rights -of -way in order to prevent interference
with private properties. The proposed force main will cross six NCDOT state roads via jack and bore or
open -cut: Waxhaw-Marvin (SR 1301), Gray Byrum Road (SR 1306), Viking Drive (SR 1455), Prince
Valiant (SR 2567), Bonds Grove Church Road (SR 1307), and Crane Road (SR 1309). The appropriate
permanent and temporary construction easements are in the process of being acquired for all areas in which
the proposed alignment is outside NCDOT right-of-way. The general vicinity of the project area includes
undeveloped and residential properties. NCDENR erosion control and NCDOT encroachment approvals
have already been granted.

CHARLOTTE
CHARLOTTE-MECKLENBURG
UTILITIES
May 6, 2009
Mr. Mike Garbark
Union County Public Works
400 North Church Street
Monroe, NC 28112-4804
SUBJECT: SEWER FLOW ACCEPTANCE
TWELVE MILE CREEK SEWER DIVE
UNION COUNTY TAX PARCEL
C-MU TRACKING #600-09-547
ON FORCE MAIN
In response to your request, a flow acceptance study of the subject site has been completed and the
following has been determined:
Charlotte -Mecklenburg Utilities agrees to accept the sewage flow of 1,700,000 gallons per day from this
project for transmission to the McAlpine Creek Wastewater Treatment Plant; NPDES permit number
NC0024970, for treatment. This acceptance of flow is based on the existing capacity of the designated
publicly owned treatment works, Please see attached basin map and flow tracking form.
Due to the involvement of other agencies and continuing growth of the water and sewer system, the
ability to provide service for future projects cannot be guaranteed nor reserved. Connection to the
Charlotte -Mecklenburg Utilities system is accepted on a first come, first served basis.
The applicant should understand that this letter is not authorization to construct private water or sewer
systems, as the appropriate local or State permits are required prior to construction. If the appropriate
authorization to construct permits are not obtained and construction has not started within one (1) year of
issuance of this flow acceptance, this flow acceptance approval shall be rescinded and a new flow
acceptance request must be made. If you have any questions, you may contact me at [phone].
Sincerely,
Barbara Gross
Engineering Assistant
New Services Section
CHARLOTTE-MECKLENBURG UTILITIES
Customer Service Division • New Services Section
www.cmutiIities.com
5100 Brookshire Boulevard
Charlotte, NC 28216
Ph: 704/399-2221
Fax: [phone]

dCreekWV P
L1nio sedunty Site
600►-09-547
g Utilites
rith Basins

Der ar
State of North Carolina
ent of Environment and Natural Resources
Division of Water Quality
Flow Tracking/Acceptance for Sewer Extension Permit Applications
(FTSE—10/07)
Project Applicant Name: union County Public Ft rka
Project Name for which flow is being requested.: Twelve le Creek Sewer Diversion Force Main.
Afore than one f''TSE-t 0/07 may be required fOr a single project if the ow
pump stations along the route of"the proposed wastewater,
�f the 4 47P is not responsible for- all
I. Complete this section only if you are the owner ofthe wastewater
plant.
a. WWTP Facility Name: McAJ pine Creek, Irwin Creek, azc ar Creek WWTP
b, WWTP Facility Permit #: NCO
c. WWTP facility's permitted flow
d.. Estimated obligated flow not yet tributary
e. WWTP facility's actual avg, flow
f. Total flow for this specific request
g. Total actual and obligated flows to the fac:
h. Percent of permitted flow used
w7m 494.5 WCQ 249
the WWTP
All flows are in 4GD
1.7D
77.29
78
ll. Complete this section for each pump station you are responsible for along the route of this
proposed wastewater flow.
List pump stations located between the project connection point and the WWTP
Pump Station Name
i C it e Creek
Approx. Capacity, MGD Approx. Current Avg.
(Firm/Design.) Daily Flow, MGD
6.96 2.57
Certification Statement:
Pc! r1 , certify that, ttt the best of my knowledge, the addition of the
rater to be permitted. in this project has been, evaluated along the route to the receiving
wastewater treatment facility andthat the flow from this project is not anticipated to cause any capacity
related sanitary sewer overflows or overburden any downstream pump station en route to the receiving
treatment plant under normal circumstances, This analysis has been performed in accordance with local
established policies and procedures using the best available data, This certification applies to those items
listed above in Sections I and 11 for which I am the responsible party. Signature of this form indicates
acceptance oft°atewater flow,
Signir
al Sirii at�ure Date

Titl
Existing 16" Force Main ,
Tie -In Location
Proposed Force Main
USCiS Topographical Map (Catawba NE and 'W`cdtli
Project Number
01.5127003
Proposed Twelve Mile Greek.
Diversion Pump Station

FORM WSCAS-12/07
WATERSHED CLASSIFICATION ATTACHMENT
FOR SEWER SYSTEMS
Applicant Name
Project Name
Union County Public Works
Twelve Mile Creek Sewer Diversion Force Main
Professional Engineer Name
Engineering Firm Name
Erica Van Tassel, P.E.
Kimley-Horn and Associates, Inc.
Location
ID
Name of Waterbody'
County
River
Basin
Waterbody
Stream Index No.
Waterbody
Classification
1
Cowhorn Branch
Union
Catawba
03-08-38
Class C
2
Tarkhill Branch
Union
Catawba
03-08-38
Class C
3
Unnamed tributary to Twelve Mile
Creek
Union
Catawba
03-08-38
Class C
' If unnamed, indicate "unnamed tributary to X. where X is the named waterbody to which the unnamed tributary joins.
1 certify that as a Registered Professional Engineer in the State of
North Carolina that 1 have diligently followed the Division's
instructions for classifying waterbodies and that the above
classifications are inclusive of the stated project, complete and
correct to the best of my knowledge and belief.
PE Seal, Signature and Date
*** END OF FORM WSCAS-12/07 ***
FORM: WSCAS-12/07
Page 1 of I

Existing 16" Force Main
Tie -In Location
Y� ifs,„.� - I-
ii ' I
sr
F Y•`i/'Tq
e.e
.f:
• 4 • «'•,j --7r
tom, ,t'... r : : � •IIll))
•
ei.•
.
•
F` fit:'.• J jyg,
1.
Proposed Twelve Mile Creek
1�.
Diversion Pump Station
1 '1''
�.. : Sjj.S.f ,
{•y
isl
llrA' � ., 'l.
Title
USGS Topographical Map (Catawba NE and Weddington
Prepared For
Project
Twelve Mile Creek Sewer Diversion Force Main
Union County, North Carolina
Date
11/11/08
Project Number
015127003
Figure

N
CO
c_
0
ce
m
U
0
2
m
0
0
2
Invoice Date
_,Irivoice'Numbe . ,
` • ,P_O.:Na
'u = , : lel 1,,•-;In Dice <D6iquil twnrag, a ., '{ ^„
}NeVInvoice Amouij
480.0!
f
• ,
SEWER PERMIT 12M1, CREEK
•
•
.
•
05/15/09 _
051509 -
Vendor No.
- Vendor Name
Check No.
Check Date ..
05/21/2009
• Chek.Amount:2,j
$480.00
8513
NCDENR
386830
THIS'DQCUNIENT;IdAS,AVOID.PANTOGRAPHiMICROPRINTING.ANDIAN•ARTIFICIALWATERMARK. i ..
"� ' -. BB&T;,
o '^ Branch`9anking and Trust Company
7County.of Union
l> 500 WirthMain,Street •, " i'+ z` 'i 1`,
S,
VOID AFTER 60 DAYS'
i'Monroe, North Carolina 28112
480 DOLLARS AND NO CENTS
^
Pay ToEThe,) NCDENR i rs •^ F. y.i „
Orde EOf D[VISION'OF WATER QUALITY t tn, °if
M s1 y : r-€. 610 EAST CENTER AVE, SUITE 301 y t :'
Syr s MOORESVILLE ; NC 28115 ' 0 fi: '
'x aG F. ., sae}� h. �,
--- :..r--4 - -7, 7.-ems "k'.w,_ f a �.:._- �.
4.4
ty *66-i 121531
Check
Number
38683C
Verido.:r_No�.
8513;
LCheck Date„
'05/21/2009
$480.00
"' .K' �+}* • •'This'disbuisement has been approved as required try the Local
Government Budget and Fiscal Control Act.
`{ ' CFisirmart
'' Fina Director
II■38Ed3 3011' 1:05310LL2LI: 0005L0236910811■

Central Files: APS! 5WP_
07/30/09
Permit Number W00034093 Permit Tracking Slip
Program Category Status Project Type
Non -discharge Active New Project
Permit Type Fast Track Version Permit Classification
Gravity Sewer Extension, Pump Stations, & Pressure Sewer 1.00 Individual
Extensions
Primary Reviewer .
dee.browder
• Coastal SW Rule
Permitted Flow
1700000
Facility
Facility Name
Twelve Mile Creek Sewer Diversion Force Main
Location Address
Owner
Permit Contact Affiliation
Major/Minor Region
Minor Mooresville
County
Union
Facility Contact Affiliation
Owner Name Owner Type
Union County Public Works Government - County
Owner Affiliation
Mark Eugene Tye
500 N Church St Ste 500
Monroe NC 281124730
Dates/Events
Orig Issue App Received Draft initiated
07/30/09 05/28/09
Scheduled
Issuance
Public Notice Issue Effective Expiration
07/30/09 07/30/09
Regulated Activities RenuestedlReceived Events
Church Additional information received
Office Additional information received
Restaurant Additional information requested 06/12/09
Retail AdditionaI information requested 06/24/09
School Additional information requested 07/02/09
Subdivision Additional information received 07/16/09
Wastewater collection
Outfali NULL
Waterbody Name Stream Index Number Current Class Subbasin

► riKimley-Horn
and Associates, In
Transmittal
Date: May 27, 2009 Job Number: KHA 01>127003
Project Name: Twelve Mile Creek Sewer Diversion Force Main
To: Mooresville Regional Office
610 E, Center Avenue
Mooresville, NC 28115
We crre sending they
© U• .S. Mail
- O• ther:
We are wending VU
Attached
i� Shop ttra�fn
gs
Other: Fast. Track
Copies Date
05 27/
The ,e are Iranarnti
No.
'edEx
Application Fee
Suit 3C{!
46S 1 Charlotte Park Drive
CharIotte,'Nucth Carol ua.
28217
TEL 7043'-
FAX 704 333 tDit4
DM -Surface Wester
El Hand Deliver
1=or your u.se' A• pproved as so.
As requested El A• pproved as noted
For review and comment f Returned for corrections fl Return
copy ofthe Fast' ,Npplic_ation (FTrA 12107)
p➢
pprovia.l
'opies for distribution
ed prarat
Remarks:
Enclosed is ottc c ri analand one copy of the .Feast-Traca Appheation, Included in the
application is the al plicationtif � a project .narrative, Forth ICE 10/07, Topo Map, and
Form TJ SCg S 12°0.7. Please fee l arc>e tc call me -w ith any question at 704-9 y4-.; 483. Thank
,you,
Copy to' File
Signed
Page 1.
ieraatrt 05-2 ;� .'00.9.cioc

Fast Track EngineeriCertification
Permit No, WQ0034093
August 1, 2009
Owner,NVQCS,NVWTP PE
Scott Huneycutt Erica Van Tassel
Union County Kimley-Horn and Associates„ Inc,
500 North Main St, Suite 500 4651 Charlotte Park Drive, Suite 300
Monroe,, NC 28112 Charlotte, NC 28217
Complete and submit this form to the permit issuing regional office with the following:
One copy of the project record drawings (plan & profile views of sewer lines) of the wastewater collection
system extension
Supporting design catculattions (selected pumps, system curve, operating point, available storage if portable
generator(s) or storage greater than longest past three year outage reliability option selected) for any pump
stations permitted as part of this project
Changes to the project should be clearly identified on the record drawings or in written summary form, Perm
modifications are reauired,for any changes resulting in non-compliance with this permit, regulations or
minimum design criterie.,
This project shall not be considered complete nor allowed to operate until this Engineer's Certification and all
required supporting documentation have been received by the Division. Therefore, it is highly recommended
that this certification be sent in a manner that provides proof of receipt by the Division.
ENGINEERS CERTIFICATION
_j Partial
Final
t`r�r nrrwr vs a duty registered Professional Engineer in the State of North Carolina, 'having been
authorized to observe (I periodically, [1] weekly, fl full time) the construction of Twelve Mile Creek Sewer
Diversion Force Main, a Union County project for the Permitted„ hereby state that, to the best of my abilities, due care
and diligence was used in the observation cf the construction such that the construction was observed to be built.
within substantial compliance of this permit, 15A NCAC 2T; the Division of Water Quality's (Division) Gravity Sewer
Minimum Design Criteria adopted February 12, 1996 as applicable; the Division's Minirnurn Design Criteria for the
Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable„ and other supporting
materials.
North Caron
seal, signatu
Professional Engineer's
and date:
SEND THIS FORM & SUPPORTING DOCUMENTATION
WITH REQUIRED ATTACHMENTS TO THE FOLLOWING ADDRESS
MOORESVILLE REGIONAL OFFICE
SURFACE WATER PROTECTION
610 EAST CENTER AVENUE, SUITE 301
MOORESVILLE NC 28115
The Per nittee is responsible for tracking all partial certifications up until a final certification is received. Any
wastewater flow made tributary to the wastewater collection system extension prior to completion of this
Engineer°s Certification shall be considered a violation of the perrnit and shall subject the Permittee to appropriate
enforcement actions.

1119t2009
+ t
Project Name: Tweleve Milo Pump Station
Senario: Diversion PS to GS outfall - Intermediate Condition
Location: Union County
KHA Project Number. 15127003
BHR
LIFT STATION CALCULATIONS
Input Default Intermediate Resort Result
1. FLOW ESTIMATE
q r ERU = 250 'GPD ERU = Egivalent Residental Unit, verify with Utility
Flaw diverted from Tweleve Mle
Flow from Tweleve Mle +Tarkhill
2,000,000 GPD
1,389 GPM
3,260,000 GPD
2,264 GPM
2. Peak Flows
Peak hour flow (PHF) = 1,388.9 GPM x 1.00 = 1,389 gpm
2. EQUIVALENT LENGTHS OF PIPE
Friction Loss in Pipes, Valves & Horizontal and Vertical Fittings
PVC pipe friction factor C 120 is used to simolat4 future condition of the PVC ( C=140 new)
Pipe
Size
Equivalent Feet of Pipe
Fitting or Valve
Gate
Vahre
Check
Plug/
AR Valve
22.5/
45 Degree
90 Degree
Tee
3"
IMMIIIMEMMEMIWIMMINEEM2M11116:1=
0®®MliEMIDEMMII
1
MEMMIIMINKIMMEMIIMEITIMMEEM
- -
6.68
=IIIMMEIEMEIMOM®
MIE
t t
Souhralmt feel of Noe data adorned from Cameron Hydraukc Data. 18th F8.
15151 LF of
21 -
8
0
0
1
18 PVC force main x
18 45 degree elbows x
18 Plug Valves
18 90 degree elbows x
18 Tee •
16 Check Vahre x
1
22.5 LF
26.6 LF
422 LF
84.4 LF
120.0 LF
= 15151.0 LF149
▪ 472.5 LF
_ 212.8 LF
• 0.0LF
• 0.0LF
120.0 LF
Equivalent length of
18
pipe
(C=120)
15956.3 LF
11500 LF of
10 -
2
0
0
1
16 PVC force main x
16 45 degree elbows x
16 Plug Vahres
16 90 degree elbows x
16 Tee
16 Check Vahre x
1
20.0 LF
23.6 LF
37.5 LF
75.0 LF
107.0 LF
= 11500.0 LF
200.0 LF
472 LF
• 0.0LF
= 0.0LF
107.0 LF
Equivalent length of
16
pipe
(C=120)
11854.2 LF
DOD LF of 16 PVC force main x
16 45 degree elbows x
1 16 Plug Valves
D 16 90 degree elbows x
O 16 Tee
O 16 Cherk Valve x
1
20.0 LF
23.6 LF
37.5 LF
75.0 LF
107.0 LF
▪ 8000.0 LF
120.0 LF
23.6 LF
0.0LF
▪ 0.0LF
0.0 LF
Equivalent length of
16
pipe
(C=120)
8143.6 LF
18-inch Forcemain from 12
mile to Tarkhill
Tarkhill to high point
high point to 1B-inch Gravity
P:1015127 Union Countyl003_TwelveMOe PS_FM\CaIcs109.01-15 Lift Station Catc.xis Page 1 of 4
Ut912009

3. LIFT HEAD
11192009
Peak Elevation for design purposes
Peak Elevation in the 18-Inch Line
PreliminaryRump crr plus Storage depth/2 elevation
Total Static Head
697.0 FT NGVD
649.6 FT NGVD
479.5 FT NGVD
4. STATIC HEAD IN RECEIVING FORCE MAIN
Receiving force main peak pressure psi / 0.433
5. SYSTEM HEAD CURVE
Based on 15956 equivalent feet of
Based on 11854 equivalent feet of
C=120 used to replicate future condition
217.5 FT
0 FT of head
18.0 inch force main C a 12D
16.0
inch force main C = 120
Flow
(GPM)
Velocity
18-inch
(FPS)
Velocity
18-inch
(FPS)
Friction
Loss 18'
(hf) (FT)
Friction
Loss 16' to High PL
(hf) (Fr)
Friction
Loss (hi)
(FT)
Static
Head
(FT)
Friction
Loss 16'
. (hf) (FT)
•
TDH
(FT)
0
0.0
1.4
0.0
6.4
6.4
217.5
4.6
223.9
200
0.3
1.7
0.3
9.5
9.8
217.5
6.8
227.3
400
0.5
2.0
1.2
13.1
14.3
217.5
9.3
231.6
600
0.8
2.4
2.6 •
17.2
19.8
217:5
122
237.3
800
1.0
2.7
4.3
21.9
26.2
217.5
15.4
243.7
1000
1,3
3.0
6.6
27.0
33.6
217.5
19.0
251.1
1200
1.5
3.3
9.2
32.7
41.9
217.5
23.0
259.4
1400
1.8
3.6
12.2
38.8
51.1
217.5
27.2
268.6
1600
2.0
3.9
15.7
45.4
61.1
217.5
31.8
278.6
1800
2.3
4.3
19.5
52.5
72.0
217.5 .
36.7
289.5
2000
2.5
4.6
23.7
60.1
83.8
217.5
42.0
301.3
2200
2.8
4.9
28.3
68.1
96.4
217.5
47.5
313.9
2400
3,0
5.2
332
76.6
109.E
217.5
53.4
327.3
2600
3.3
5.5
38.5
85.6
124.1
217.5
59.6
341.8
2800
3.5
5.9
44.1
95.0
139.1
217.5
66.1
356.6
3000
3.8
62
50.2
104.8
155.0
217.5
72.9
372.5
3200
4.0
6.5
56.5
115.1
171.7
217.5
80.0
389.2
3400
4.3
6.8
.632
125.9
189,1
217.5
87.4
406.6
3600
4.5
7.1
70.3
137.1
207.3
217.5
95.1
424.8
3600
4.8
7.5
77.7
148.7
226.3
217.5
103.2
443.8
4000
5.0
7.8
85.4
160.7
246.1
217.5
111.5
463.6
Des. Pril 1,470 r 1.9
PUMP CURVE
gpm
0
R-H20
316.3
1000
287.6
2000
3000
257.2
228.3
4000
193.2
3.7
13.4
41.1
54.5 217.5
28.8
272.0
Yelocify = Q/448.8
rrxD /4
hf=10.44L x Q1.852
D4.9655C9.652
Ovreail eff. 54.8 %
Total Head [WI)
400
390
380
370
360
350
940
330
320
310
300
290
260
270
260
250
240
230
220
210
200
190
180
170
160
150
140
130
120
110
100
0
500
1000
System Head Curve
and
Pump Curve
• 1500
Flow (gpm)
2000
2500
3000
-61.0TE1.1. HEAD CURVE
-.11- PUN. CURVE
See Appendor F for Pump Curve
P:1015127 Union County1003 TwetveMile_PS_FMlCalcs109-01-15 UR Station Calc.xls Page 2 of 4 1/192009

r r
6. CYCLE TIME
1/19/2009
u
Where T = Cycle Time (min.)
V = Wetwetl Volume (gaL)
Q = Pumping Rate (GPM)
S = ADF (GPM)
P=SxPFxSF
Wetwell Dimension 10 Ientgh
by 12 width
1.5 ft of operating range( station storage ) (HI)
• HI = "Lead Pump On' elevation minus "Pump OfP elevation
V > 1346.4 gat. = Wet Welt Volume
Q = 1,470 GPM (from pump tune, see appendix)
A = 1388.9 GPM =Average Daily Flow
P= 1,389 gpm = Peak Hour Flow
V = Pi/4' D"2'HS
Run Time =Vl(Q-A)
RT = 1348 = 16.6 minutes Pump Run Time
1470 - 1389 16.6 >2.5 minimum
Minimum Cycle Time, T=(V!A)I(1-AIQ) Minimum of 10 minutes for 6 starts per hour.
T,,,,„ = V 1 (1 - A )
A Q
T, = 1346.40 1 1 1388.9 = 17.6 mils. (1 Q12)
1,389 - 1470.0
Velocity at pumping rate of
velocity = 0448.81
rrxD214
Invert In 481.26�fE—
Bottom Ei.
Starts per hr = 60/ 17.57
3.4 > 2 minimum
1470 gpm in the 113.1) inch force main is
/71 SLAB
1.85 fps
Note: Velocity should be >2.0 fps
and 6 fps
509 ft Top Elev
485.0 8 Alarm
483.0 f1 Lag pump #2'on'
481.0 ft Lead - Pump t on
480.25
479.5 ft Off
477.3 ft A
473.E V%J//// A
SLAB /✓////%////
Top of Grout
P:1015127_Union County1003_TwelveMile_PS FM1Calcs{09-01-15 Lift Station Cale.xls Page 3 of 4 1/19r2009

3
r �
7. FLOTATION CALCULATIONS
24 fl diameter wet well
24 inch thick sldewalls
24 inch thick top slab
42 inch thick bottom slab
12 inch extension on bottom stab
32 square feet hatch opening
150 Ibsfft"3 wetwell material weight
a) Weight of Wetwell
D
T
TS
BS
E
Al
MW
1) Top Slab 24 inches thick = TS
Area (A2}= ((e/2) + T)"2 x PI = 615.8 square feel
F1= (A2- Al) xTSxMW
F1 = 615.8 32 x 2.0 x 150
F1 = 175,126 pounds
2) Side Walls 24 Inches thick
A3 = Inside area of wet well = D"214 • Pi
A3 = 452.39
Top elevation 509.0 FT NGVD
Bottom elevation 477.3 FT NGVD
31.8 FT = H2
F2=(A2-A3)xH2xMW
F2 = 778,015 pounds
3) Bottom Slab 42 Inches thick =
A4 = 30.00 FT circle = 706.5 sq. ft.
F3 = Area (A4) x BS x MW
F3 = 706:5 x 3.5 x 150
F3 = 370,913 pounds
4) Total Weight of Wetwelf = Ft
+ F2
+ F3
Fw =
b) Weight of soli on lip of wet well bottom slab
175,126 pounds
778,015 pounds
370,913 pounds
1,324,054 pounds
Sol area (SA) = area of bottom slab minus area of the outside diameter of the wet well (A2).
5A= A4-A2
SA = 706.5 615.8 =
Assume a conservative estimate that the soil extends only
. and tapers in to the wet weir walls on the way up.
Fs =
Fs =
c) Force of Buoyancy
Weight of the soil =
79,234 pounds
T
85
90.7 sq. IL
15.9 feet above the bottom slab
32.4 x 15.9 x 0.5 x 110.0 les/cubic foot
Fb = Volume x Unit Weight of Water = A2 x (H2 + BS) x 62.4 tbs/ft"3
Fb = 615.8 x ( 31.8 + 3.5 ) x 62.4
Fb = 1,354,408 pounds
d) Floatation Check
Subtract the upward force (Fb) from the downward forces (Fw + Fs) to see if the difference is negative.
A negative. answer would mean that floatation may be a problem and shouldbe further addressed.
(Fw Fs)
1,324,054 + 79.234
Floatation is nota problem
8. RECOMMENDATIONS
Fb
1,354,408
Lift Station Depth: 31.75 feet (measured from top slab)
Pump Manufacturer Flygt
Model: NP 3231
Impeller. 420 mm
Horsepower: 335
Voltage: 460 VAC
Phase: three
RPM: 1775
N
• 48,879 pounds
1/192009
P:4015127 Union County1003 TwetveMlIe PS_FMSCalcs409-01-15 Lift Station Calcxls Page 4 of 4 1/1912009

NM z
•
PERFORMANCE CURVE
PRODUCT
NP3231 /765
7YPE
DATE
2009-01-15
PROJECT
CURVE NO
63-470
ISSUE
4
POWER FACTOR
1/1-LOAD
0.91
3/4-LOAD
0.90.
1/2-LOAD
0.85
RATED
POWER ..... 335 hp
STARTING
IMPELLER DIAMETER
420 mm
EFFICIENCY
MOTOR DATA
94.0 %
—
94.5 %
—
94.5 %
—
CURRENT ... 2155 A
RATED
CURRENT ... 365 A
MOTOR # STATOR
43-56-4AA I06Y
REV
11
COMMENTS
INLET/OUTLET
-! 8 inch
RSAPEED 775 rp
TOT.MOM.OF -m
FREQ.
60 Hz
PHASES
3
VOLTAGE
460 V
POLES
4
IMP. THROUGHLET
--
INERTIA... 3.0 kgm2
BEES 3
GEARTYPE RATIO
--I --
aFri
[hp]
300
)VERALL EFF. 0 INPUT POWE
'UMP EFF. * SHAFT POWE
250
tY
200
�
0
150
1�
a
100•
LL
DUTY -POINT FLOWfUsgpm) HEAD[ff] POWER [hp] EFF. %] NPSHre[fs] 0 .X
1 1470 273 186 (175) 54.8 58.0) 15.2
B.E.P. 3279 220 251 (238) 72.8 (76.7) 36.2
NPSHre z
[]
[ft]
Oa
v_
300
300 ---
w
1-
w
m
r
250
1
250
EFF.
NPS
re=36
ft
—
[%]
Q200
200
— 80
W-..■11101111..1.11111111
150
��
150
— 60
100
—
50
•
100
— 40
50
/
L
--
30
50 --
20
--
10
0
..---"J
0 1000 2000 3000 4000 500D 6000
FLOW
0^0
[USgpm]
NPSHre = NPSH3% + min. operational margin
Performance with clear water and ambient temp 40 °C
IrliT
HI B C u I V e

DIC€Consul
Emergency Power Generation
12 Miie Creek Diversion. Pump Station and Force Main
SW027
The 12 Mile Creek Diversion Pump Station is served by the existing emergency power generator
located at the 12 Mile Creek Wastewater Treatment Facility screening structure. This is a 1000kW
diesel generator (sht 21 of 30).
28468
6"609