WQ0038340_Sewer Extension_20160307

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DEQ/DWR
MAR 0 7 2016 State of North Carolina
Department of Environmental Quality
WIR Division of Water Resources
WQROS r�1FAST-TRACK APPLICATION (FTA 10-14)
Division of Water ResourccFsAYETTEVILLE REGIONA%rF&&ITV SEWERS, PUMP STATIONS, AND FORCE MAINS
General — When submitting this application, please use the following instructions as a checklist in order to
ensure all required items are submitted. Adherence to these instructions and checking the provided boxes will
help produce a quicker review time and reduce the amount of requested additional information.
For more information, visit the Water Quality Permitting Section's or;
contact the Regional Office serving your county
Unless otherwise noted, the Applicant shall submit one original and one copy of the application and supporting
documentation to the appropriate Regional Office (see page 3).
A. Cove�f Letter:
® Include a brief project narrative describing the final design (i.e system and/or pump station to ultimately
serve 500 homes, but flow for only 100 homes being requested now). For modifications, clearly explain
the reason for the modification (i.e. adding another phase, changing line size, length, etc).
B. App,' ation Form (FTA 10-14)
Submit the completed and appropriately executed Fast -Track (FTA 10-14) Application. Any
unauthorized content changes to this form shall result in the application being returned. If necessary
for clarity or due to space restrictions, attachment to the application may be made, as long as the
attachments are numbered to correspond to the section and item to which they refer. You do not need
t bmit detailed plans and specifications unless you respond NO to item B 13 .
The Professional Engineer's Certification of the application shall be signed, sealed and dated by a
rth Carolina i, :sed Professional Engu
The Applicant's Certification of the application shall be signed in accordance with 15A NCAC 02T
.0106(b). Per 15A NCAC 02T .0106(c), an alternate person may be designated as the signing official if
a delegation letter is provided from a person who meets the criteria in 15A NCAC 02T .0106(b).
C. Appl' ation Fee:
0,'Sbmit a check in the amount of $480 to: North Carolina Department of Environmental Quality
(NCDEQ).
➢ Checks shall be dated within 90 days of application submittal.
D. Certificate of Public Convenience and Necessity (For Privately -Owned Public Utilities Only):
❑ Per 15A NCAC _02T .0115(a)(1), provide two copies of the Certificate of Public Convenience and
Necessity from the North Carolina Utilities Commission demonstrating the Applicant is authorized to
hold the utility franchise for the area to be served by the sewer extension, or
❑ Provide two copies of a letter from the North Carolina Utilij( Comr sion's Water and Sewer )ivision
Public staff stating an application for a franchise has been received and that the service area is
contiguous to an existing franchised area or that franchise approval is expected.
❑ The project name in the CPCN or letter must match that provided in Item A(2)a of this application.
E. Operational Agreements (For Home/Property Owners' Associations and Developers of lots to be sold):
Home/Property Owners' Associations
❑ Per 15A NCAC 02T .0115(c), submit the properly executed Operational Agreement (HOA 08-13).
❑ Per 15A NCAC 02T .0115(c), submit a copy of the Articles of Incorporation, Declarations and By-laws.
Developers of lots to be sold
❑ Per 15A NCAC i, l_ .0115(b), submit the properly executed Open`ment(C =V 08-13).
Even if the project may be turned over to a municipality upon completion, Form DEV 08-13 is required.
INSTRUCTIONS FOR APPLICATION FTA 10-14 & SUPPORTING DOCUMENTATION Page 1 of 6

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F. Downstream Sewer, WWTF Capacity and Flow Tracking/Acceptance Form (-T'Sf 08-13)
❑ Submit the completed and appropriately executed Flow Tracking/Acceptance for Sewer Extension
Permit (FTSE 08-13) Form for all applications.
The applicant (and owners of downstream sewers, pump stations and/or treatment facilities submitting
form FTSE 08-13 certifies that the addition of the volume of wastewater to be permitted in this project
has been evaluated along the route to the receiving treatment plant, and that the flow from this project
will not cause capacity related sanitary sewer overflows or overburden any downstream pump station
en route to the receiving wastewater treatment plant.
Where the applicant is not the owner of the downstream sewer, submit two copies of form FTSE 08-13
from the owner of the downstream sewer and owner of the WWTF, if different.
The flow acceptance indicated in form FTSE 08-13 must not expire prior to permit issuance and must
be dated less than one year prior to the application date.
Submittal of this application and form FTSE 08-13 indicates that owner has adequate capacity
and will not violate G.S. 143-215.67(a).
Intergovernmental agreements or other contracts will not be accepted in lieu of a project -
specific FTSE 08-13.
G. Site Map (All Application Packages):
Submit an 8.5-inch x 11-inch color copy of a USGS Topographic Map of sufficient scale to identify the
entire project area and closest surface waters. Each map must include at a minimum:
➢ The location of the sewer line and pump stations and be of reproducible quality.
➢ Downstream connection points and the permit number for the receiving sewer (if known)
➢ Pump Station Locations and the longitude and latitude for each pump station (if applicable)
❑ Include a street level map showing all relevant project areas.
H. Str n Classification (WSCAS 01-15)
9" Submit the completed and appropriately executed Watershed Classification Attachment form
(WSCAS 01-15) if any portion of the sewer system project is within 100 feet of any surface water or
wetlands.
A variance must be requested for encroachment within required setbacks or buffers pursuant to
NCAC 02T .0305(f)
Environmental Assessments (Projects subject to an Environmental Assessment (EA)):
Projects involving an Environmental Assessment per 15A NCAC 01 C .0408, must be submitted for a
full technical review and must be submitted to the P_ ER_ CS Unit on application forms provided by the
Division.
Alternative Sewer Systems
Projects involving low pressure sewer systems, vacuum sewer systems and other alternative sewer
systems must be submitted for a full technical review and must be submitted to the PERCS Unit on
application forms provided by the Division.
K. Flow Direction
Many wastewater treatment systems are entering into agreements for regionalization efforts and
emergency treatment capacity. Parts of the system are installed so that the wastewater flow can be
directed to more than one treatment facility. If this is the case with the project, please indicate in B(12)
and give the permit number of the second facility.
L. Certifications — Section C
The application must be certified by both the applicant and the design engineer who is a North Carolina
Registered Professional Engineer (PE). The applicant signature must match the signing official listed in
Item A(1 b). The PE should NOT certify the application if he/she is unfamiliar with 5A NCAC Chapter
2T, The Gravity Sewer Minimum Design Criteria (most recent version) and the Minimum Design Criteria
for the Permitting of Pump Stations and Force Mains (most recent version), as applicable to the project.
INSTRUCTIONS FOR APPLICATION FTA 10-14 & SUPPORTING DOCUMENTATION Page 2 of 6

THE COMPLETED APPLICATION PACKAGE INCLDING ALL SUPPORTING INFORMATION AND
MATERIALS, SHOULD BE SENT TO THE APPROPRIATE REGIONAL OFFICE:
REGIONAL OFFICE
ADDRESS
COUNTIES SERVED
Asheville Regional Office
2090 US Highway 70
Avery, Buncombe, Burke, Caldwell, Cherokee,
Water Quality Section
Swannanoa, North Carolina 28778
Clay, Graham, Haywood, Henderson, Jackson,
[phone]
Macon, Madison, McDowell, Mitchell, Polk,
[phone] Fax
Rutherford, Swain, Transylvania, Yancey
Fayetteville Regional Office
225 Green Street Suite 714
Anson, Bladen, Cumberland, Hamett, Hoke,
Water Quality Section
Fayetteville, North Carolina 28301-5094
Montgomery, Moore, Robeson, Richmond,
[phone]
Sampson, Scotland
[phone] Fax
Mooresville Regional Office
610 E. Center Avenue
Alexander, Cabarrus, Catawba, Cleveland,
Water Quality Section
Mooresville, North Carolina 28115
Gaston, Iredell, Lincoln, Mecklenburg, Rowan,
[phone]
Stanly, Union
[phone] Fax
Raleigh Regional Office
1628 Mail Service Center
Chatham, Durham, Edgecombe, Franklin,
Water Quality Section
Raleigh, North Carolina 27699-1628
Granville, Halifax, Johnston, Lee, Nash,
[phone]
Northampton, Orange, Person, Vance, Wake,
[phone] Fax
Warren, Wilson
Washington Regional Office
943 Washington Square Mall
Beaufort, Bertie, Camden, Chowan, Craven,
Water Quality Section
Washington, North Carolina 27889
Currituck, Dare, Gates, Greene, Hertford, Hyde,
[phone]
Jones, Lenoir, Martin, Pamlico, Pasquotank,
[phone] Fax
Perquimans, Pitt, Tyrrell, Washington, Wayne
Wilmington Regional Office
127 Cardinal Drive Extension
Brunswick, Carteret, Columbus, Duplin, New
Water Quality Section
Wilmington, North Carolina 28405
Hanover, Onslow, Pender
[phone]
[phone] Fax
Winston-Salem Regional Office
450 W. Hanes Mill Road
Alamance, Alleghany, Ashe, Caswell, Davidson,
Water Quality Section
Suite 300
Davie, Forsyth, Guilford, Rockingham, Randolph,
Winston-Salem, North Carolina 27105
Stokes, Surry, Watauga, Wilkes, Yadkin
[phone]
INSTRUCTIONS FOR APPLICATION FTA 10-14 & SUPPORTING DOCUMENTATION Page 3 of 6

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USE THE TAB KEY TO MOVE FROM FIELD TO FIELD
1. Owner/Permittee:
1a. City of Rockingham, NC
Application Number:
(to be completed by DWR) W Q 00 3
Full Legal Name (company, municipality, HOA, utility, etc.)
1 b. Monty R. Crump, City Manager
Signing Official Name and Title (Please review 15A NCAC 2T .0106 (b) for authorized signing officials)
1c. The legal entity who will own this system is:
❑ Individual ❑ Federal ® Municipality ❑ State/County ❑ Private Partnership ❑ Corporation ❑ Other (specify):
1d. 514 Rockingham Road le. Rockingham
Mailing Address City
1 f. N.C. 1 g. 28379
State
1 h. 910.997.5546 1 i. 910.997.6617
1j.
Zip Code
Telephone Facsimile E-mail
2. Project (Facility) Information:
2a. School Pump Station Replacement 2b. Richmond
Brief Project Name (permit will refer to this name) County Where Project is Located
3. Contact Person:
3a. Richard Byrd, PE, Davis & Floyd, Inc.
Name and Affiliation of Someone Who Can Answer Questions About this Application
3b. 843.430.0232 3c. rbyrd@davisflo)
Phone Number E-mail
1. Project is ® New ❑ Modification (of an existing permit) If Modification, Permit No.:
com
2. Owner is ® Public (skip to Item B(3)) ❑ Private (go to Item 2(a))
2a. If private, applicant will be: 2b. If sold, facilities owned by a (must choose one
❑ Retaining Ownership (i.e. store, church, single office, etc.) or ❑ Public Utility (Instruction D)
❑ Leasing units (lots, townhomes, etc. - skip to Item B(3)) ❑ Homeowner Assoc./Developer (Instruction E)
❑ Selling units (lots, townhomes, etc. - go to Item B(2b))
3. City of Rockingham, NC
Owner of Wastewater Treatment Facility (WWTF) Treating Wastewater From This Project
4a. City of Rockingham WWTP 4b. NCO020427
Name of WWTF WWTF Permit No.
5a. City of Rockingham 15b. 12 ® Gravity i5c.
Owner of Downstream Sewer lReceiving Sewer Size ❑ Force Main Permit # of Downstream Sewer (Instruction F)
6. The origin of this wastewater is (check all that apply):
❑ Residential Subdivision
❑ Apartments/Condominiums
❑ Mobile Home Park
® School
❑ Restaurant
® Office
® Retail (Stores, shopping centers)
❑ Institution
❑ Hospital
❑ Church
❑ Nursing Home
❑ Other (specify):
100% Domestic/Commercial
% Industrial
(Attach Description)
% Other
(Attach Description)
7. Volume of wastewater to be allocated or permitted for this particular project: -0- gallons per day
*Do not include future flows or previously permitted allocations
8. If the permitted flow is zero, indicate why:
❑ Pump Station, Outfall or Interceptor Line where flow will be permitted in subsequent permits that connect to this line
❑ Flow has already been allocated in Permit No.
® Rehabilitation or replacement of existing sewer with no new flow expected
(see 15A NCAC 02T .0303 to determine if a permit is required)
FTA 10-14 APPLICATION Page 4 of 6

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) AND/OR 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 (f).
See design narrative, attached.
10. Summary of Sewer Lines to be Permitted (attach additional sheets if necessary)
Size (inches)
8
4
W
Length (feet)
275
861
New Gravity or Additional
Force Main
Gravity Sewer
Force Main
11. Summary of Pump Stations w/ associated Force Mains to be Permitted (attach additional sheets as necessary)
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0 Pump Station Location ID: School Pump Station (self chosen - as shown on plans/map for reference)
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Longitude:-65.9961398 degrees
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Latitude: 36.9783205 degrees
Design Flow Operational Point Power Reliability Option
Q (MGD) GPM @TDH 1 - permanent generator w/ATS; Force Main Size Force Main Length
2 - portable generator w/MTS
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0 0.174 120@27.5
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Longitude:
W
2
rd
(self chosen - as shown on plans/map for reference)
Latitude:
861
Design Flow Power Reliability Option
f11 (MGD) Operational Point 1 -permanent generator w/ATS; Force Main Size Force Main Length
Im GPM @TDH 2 - portable generator w/MTS
12. Will the wastewater flow in the proposed sewer lines or pump stations be able to be directed to another treatment facility?
[:]Yes ® No If Yes, permit number of 2nd treatment facility :
(RO — if "yes" to 13,12 please contact the Central Office PERCS Unit)
13. Does the sewer system comply with the Minimum Design Criteria for the Permitting of Pump Stations and Force Mains
(latest version), the Gravity Sewer Minimum Design Criteria (latest version) and 15A NCAC Chapter 2T as applicable?
i►5m■n►L
If No, complete and submit the Variance/Alternative Design Request (VADC 10-14) application and supporting
documents for review. Approval of the request is required prior to submittal of the Fast Track Application and
supporting documents.
FTA 10-14 APPLICATION Page 5 of 6

14. Have the following permits/certifications been submitted for approval for the system or project to be served?
Wetland/Stream Crossings - General Permit or 401 Certification? ❑ Yes ❑ No ® N/A
Sedimentation and Erosion Control Plan? ❑ Yes ❑ No ® N/A
Trout Buffer Waiver? ❑ Yes ❑ No ® N/A
Stormwater? ❑ Yes ❑ No ® N/A
15. Does this project include any high priority lines (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: ❑ and provide details:
1. Owner/Permittee's Certification: (Signature of Signing Official and Project Name)
1, Monty R. Crump attest that this application for Rockingham School Pump Station 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
certificap fV ariy`application shall be guilty of a Class 2 misdemeanor, which may include a fine not to exceed $10,000
as wejras citli penames up
la. (; V `"' �� �' 2 ► ')
SigKing Official Signature
ENGINEERING DESIGN DOCUMENTS MUST BE COMPLETED PRIOR TO SUBMITTAL OF THIS
APPLICATION. THESE DOCUMENTS MUST INCLUDE PLAN AND PROFILE OF SEWERS, THEIR PROXIMITY
N TO OTHER UTILITIES, DESIGN CALCULATIONS, ETC. REFER TO 15A NCAC 02T .0305
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H 2. Professional Engineer's Certification: (Signature of Design Engineer and Project Name)
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=� I, Guy E. Slagle, Jr. P.E. attest that this application for Rockingham School Pump Station
has been reviewed by me and is accurate, complete and consistent with the information in the engineering plans,
H calculations, and all other supporting documentation to the best of my knowledge. I further attest that to the best of my
knowledge the proposed design has been prepared in accordance with the applicable regulations, Gravity Sewer
W Minimum Design Criteria for Gravity Sewers adopted February 12, 1996, and the Minimum Design Criteria for the Fast-
L) Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 and the watershed classification in accordance
V 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
2a. Guy E. Slagle, Jr.
Professional Engineer Name
2b. Davis & Floyd, Inc.
Engineering Firm
2c. 181 E. Evans Stre(
Mailing Address
2d. Florence
City
2g. 843.519.1050
Telephone
Suite 23, BTC 105
2h. 843.664.2881
Facsimile
2e. SC 2f. 29506
State Zip
2i. [e-mail]
E-mail
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FTA 10-14 APPLICATION Page 6 of 6

Along with this form, submit a color copy of a USGS Topographic Map to identify the project area and
waterbodies. Each map or maps must show the location of the sewer system and include location identifiers
where the system traverses over or near waterbodies. The map should have location ID's for each different
waterbody and corresponding classifications should be recorded.
Include the completed form and map portions with the permit application for submittal to the appropriate review
agency. A list of the Division's regional offices, their county coverage, and contact information can be obtained
from: http://Portal.ncdenr.org/web/wq/home/ro
Location
ID
Name of Waterbody'
River
Basin
Waterbody Stream
Index No.
Waterbody
Classification
School PS
Hitchcock Creek
YadDeePee
13-39-(10)
C
School PS
unnamed tributary to Hitchcock
Creek
Yadkin -Pee
Dee
C
If unnamed, indicate "unnamed tributary to V, 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 �,aa®®c,�ersoa
instructions for classifying waterbodies and that the above �e��� �� CARD 10 ,
classifications are inclusive of the stated project, complete and ,�`°���';��°��•° zz ,�o
correct to the best of my knowledge and belief.
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DAVIS & FLOYD
SINCE 1954
March 02, 2016
Mr. Trent Allen
NCDENR — Division of Water Resources
Fayetteville Regional Office
Water Quality Section
225 Green Street Suite 714
Fayetteville, North Carolina 28301-0594
Re: Fast Track Application (FTA-10-14)
School Pump Station Replacement
Rockingham, North Carolina
D&F Project No. 040000.02
Dear Mr. Allen:
RECEIVED
DEQ/DWR
MAR 0 7 2016
FAYETTEVIL E�RREGIIONAL OFFICE
Enclosed per our conversation is the Fast -Track Application (FTA-10-14) package for the City of
Rockingham School Pump Station Replacement project. This project will consist of the construction of a
new 120 gpm duplex submersible pump station, 275 1f 8" gravity sewer to direct flow to the new pump
station, and 8611f of new 4" force main. The existing pump station is to be demolished and removed by
the City upon commissioning of the new station, and the old force main and approximately no if of
existing 8" gravity sewer are to be plugged and abandoned. No new sewer flows will result from this
project. The new pump station will have comparable horsepower to the existing station, but a higher
pumping rate, due to the characteristics of the selected pump and changes in head afforded by the new
force main alignment. The new force main will convey the wastewater to a separate tributary gravity
sewer serving the same downstream receiving pump station as the existing School pump station.
Therefore, there will be no net change in hydraulic loading of the downstream sewer system as a result of
this pump station replacement.
Additionally, we request approval of an alternate method of pressure testing the new force main. Per the
discussion you and had on February 24f, and as noted in the design calculations, the pumps will have an
operational TDH of approximately 27.5 ft. Line pressures, therefore will be low and likely never exceed 25
psi. The specified pipe material is Class 35o DIP and AWWA C9oo PVC, DR 18, which have pressure
rating of 350 psi and 165 psi, respectively. Given the low operational pressures, we propose to test the
force main at a hydrostatic pressure of too psi for a 2-hour duration. This is a variation from the
requirement given in DENR PS -FM MDC 03/o8, paragraph 6.04.C.3.c, which stipulates a test pressure of
1.5 times the maximum design pressure of the force main pipe material. Section 02494 of the Project
Specifications, included herein, further details the proposed testing requirements. Please confirm that
the proposed pressure test procedure will be acceptable to the Department.
If you have any questions, please feel free to contact us.
Sincerely,
Da ' LByr,
.
J. Richard
Design Engineer
Enclosures as Noted:
181 E. Evans Street, Suite 23, BTC-105, Florence, SC 29506
a [phone] F [phone]
WWW.DAVISFLOYD.COM

DESIGN CALCULATIONS/
NCDENR SUBMITTAL
FOR
SCHOOL PUMP STATION REPLACEMENT
ROCKINGHAM, NORTH CAROLINA
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D&F Project No: 040000.02
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No, 14773 _-

DAVIS & FLOYD
SINCE 1954
Design Narrative:
Rockingham School Pump Station Replacement
February 2016
The City of Rockingham owns and operates an existing pump station located adjacent to Hwy 74 Business
on the west side of Hitchcock Creek and the southwestern side of the City. The existing station, identified
as the School Pump Station, serves an elementary school and several commercial establishments and,
historically, has had relatively low flows. It is a Smith -Loveless wet-pit/dry-pit type that has been in
operation since 1971 and is approaching the end of its service life. It is a too gpm station utilizing a 4"
force main to convey wastewater to a receiving manhole located on the east side of Hitchcock Creek,
which, in turn, is situated on a gravity sewer line that flows to the City's primary influent pump station to
its WWTP.
The service area of the pump station is, mostly, built -out and has little potential for further development.
Due to topography in the service area, the pump station flows cannot be re -directed via gravity sewer and
the City must, therefore, replace the existing station with a new one of comparable capacity. With low
potential for future growth, the new station will be designed to meet existing conditions and provide a
nominal increase in capacity, but no new flows will be produced as a result of, or permitted for, this
project. The new station will be a duplex, submersible facility utilizing non -clog pumps with above-
ground electrical panels and a separate valve vault. The selected pumps are to be capable of passing 3"
spherical solids, will have 4" discharge, and will mate to 4" station piping and 4" force main. The City has
acquired sufficient property to locate the new pump station approximately 250 if away from the existing
station in an area that is further away from the Hwy 74 right-of-way and Hitchcock Creek. New 8" gravity
sewer will direct flows into the new pump station. Additionally, the newly acquired property allows for a
new force main alignment that abandons the existing force main entirely and conveys the wastewater to a
separate gravity sewer line that flows to the same downstream pump station as the existing station. Thus,
the new School Pump Station flows are conveyed to the same point in the City's sewer collection system as
the existing, but follow a different route that doesn't utilize a bridge crossing or cross Hitchcock Creek.
The new School Pump Station will utilize 3 hp pumps and have a design flow of 12o gpm at 27.5' TDH.
See system and pump curves in pump station design calculations, attached.
According to City records, the existing station has average pump run times of 3 hours per week at too
gpm, or 2,500 gpd. Due to the nature of the flows being produced by the school and businesses, most of it
occurs during daytime and business hours, generally 6:0o am to 6:0o pm. Accordingly, avg influent
flowrates during these intervals are about 3.5 gpm. Allowing a peak factor of 2.5 produces a peak inflow
rate of 9 gpm. For design purposes, a io gpm influent rate is used to determine required wetwell working
volume at the design pumping rate. For the selected pumps, a standard 6 ft diameter precast concrete
wetwell is utilized. For this diameter wetwell, design for 2 vertical ft storage (working volume) and allow 1
of freeboard to influent pipe. Initial settings will allow for minimum 1 start per hour with pump run time
of approx. 3.8 minutes. At avg inflow rate, up to 6 hours of storage is available in the event of a power
failure. A manual transfer switch and generator connection is to be provided for alternate power supply.
In order to mitigate against flotation, the wetwell will utilize an 8" extended base. Flotation calculations
illustrate a net negative buoyancy for the wetwell as designed with groundwater elevation equal to the top
of the wetwell, or a fully submerged condition. The wetwell will be located in a flood zone and is to have
the top of the structure at the same elevation as the too-yr flood. In order to comply with DENR PS -FM
MDC 03/08, water tight covers will be provided for the wetwell and valve vault. Additionally, the wetwell
vent and the electrical panels are minimum 2 ft above the too -yr flood elevation.

PUMP STATION DESIGN
Rockingham School Pump Station
Hazen -Williams Equation: Hf = 0.2083(100/C)A1.85 •( gA1.85/&4.8655)
Hf = Friction loss (per 100 ft in the above equation)
q=flow in gpm
d = inside dia. of pipe in inches
4" Station Piping Equivalent Length
fitting
no. each eq. length ea.
total EL ea.
February 22, 2016 90 bend
2 10
20
tee, run
1 10
10 -
45 bend
1 5
5
check valve
1 50
50
plug valve
2 15
30
straight pipe
32
total equilavent length piping
147 If
Minor losses for FM:
Station
Force
Force
Piping
Main, PVC
Main, DIP
(inlude minor losses)
F.M. Dia. =
4
in
4 in
4
in
F.M. Length =
147
ft (est.equiv, length)
680 If
221
If
C Factor =
100
120
100
Wetwell influent elev.
157.25
ft
Pumps off elev
154.25
ft
High point in f.m. elev
167
ft
Static head, ft at pump off
12.75
ft
Station Piping
PVC Force Main
DIP FM
increment FLOW STATIC
FRICTION
VELOCITY
FRICTION VELOCITY
FRICTION
VELOCITY TDH
5 HEAD
HEAD, ft
ft/s
HEAD, ft ft/s
HEAD, ft
ft/s
gpm gpm ft
station
station
force main force main
force main
force main ft
90 bend
3 10
30
45 bend
2 5
10
total equilavent length piping
40 If
top of wetwell =
171
I 't elr' Q&le w" 6 0a••Cc
to hod u4 1
wetwell influent elev =
157.25'
( 7
lead pump on elev =
156.25
assumed setting, subject to adjustment
lag pump on
156.75
assumed setting, subject to adjustment
hwl alarm
157.15
assumed setting, subject to adjustment
pump off
154.25
assumed setting, subject to adjustment
Iwl alarm
153.75
assumed setting, subject to adjustment
bottom wetwell
153.25
flow I I6.3"D'impe impeller A14' impeller,
45
12.75
0.41
1.15
1.36
1.15
0.62
1.15
15.14
45
31.3
50
12.75
0.50
1.28
1.65
1.28
0.75
1.28
15.66
50
31.0
55
12.75
0.60
1.40
1.97
1.40
0.90
1.40
16.22
55
30.8
60
12.75
0.70
1.53
2.32
1.53
1.06
1.53
16.82
60
30.6
65
12.75
0.81
1.66
2.59
1.66
1.22
1.65
17.47
65
30.4
70
12.75
0.93
1.79
3.08
1.79
1.40
1.79
18.17
70
30.2
75
12.75
1.06
1.91
3.50
1.91
1.59
1.91
18.91
75
30.0
80
12.75
1.20
2.04
3.95
2.04
1.80
2.04
19.69
80
29.7
85
12.75
1.34
2.17
4.41
2.17
2.01
2.17
20.51
85
29.4
90
12.75
1.49
2.30
4.91
2.30
2.23
2.30
21.38
90
29.0
95
12.75
1.64
2.43
5.42
2.43
2.47
2.43
22.28
95
28.7
100
12.75
1.81
2.55
5.96
2.55
2.71
2.55
23.23
100
28.4
105
12.75
1.98
2.68
6.53
2.68
2.97
2.68
24.22
105
28.2
110
12.75
2.15
2.81
7.11
2.81
3.24
2.81
25.25
110
28.0
130
12.75
2.93
3.32
9.69
3.32
4.41
3.32
' 29.78
130
27.2
135
12.75
3.15
3.45
10.39
3.45
4.73
3.45
31.01
135
26.9
140
12.75
3.37
3.57
11.11
3.57
5.06
3.57
32.28
140
26.6
145
12.75
3.59
3.70
11.86
3.70
5,40
3.70
33.60
145
26.3
150
12.75
3.82
3.83
12.62
3.83
5.75
3.83
34.94
150
26.0
155
12.75
4.06
3.96
13.41
3.96
6.11
3.96
36.33
155
25.8
160
12.75
4.31
4.09
14.22
4.09
6.48
4.09
37.76
160
25.6
165
12.75
4.56
4.21
15.06
4.21
6.86
4.21
39.22
165
25.4
170
12.75
4.82
4.34
15.91
4.34
7.25
4.34
40.73
170
25.2
175
12.75
5.09
4.47
16.79
4.47
7.66
4.47
42.27
175
25.0
32.5 �� �-11�5 1_✓M'��
32.3 ns�
31.731.3
30.8 5 1J4�4RO 1-Ogitf/L
30.4
30.0
29.6
29.2
28.8
28.4
28.
27.8 J,
27.6 6
77 d
26.9
26.8
26.7
26.6
26.5
26.4
26.2
26.1
25.9
25.8
L/e.l0uJti-e4cEe" 2-1'-pps . .

50.00
1 11
30.00
x
20.00
10.00
50 60 70
—♦— System Curve, TDH (ft)
Rockingham School Pump Station Replacement
80 90 100 110 120
—11-•EBARA 100DLMKFU62.2 6.30 Imp
S.le Id ,Oe
q
0
130 140 150 160 170
-i--EBARA 100DLFU63.7 6.14 Imp

Wetwell sizing and cycle time
GIVEN:
Wetwell volume = 423.0 gal (calculated) Wetwell Size, dia., ft
Pump rate = 121.0 gpm (user input) Gallons/Foot depth
Depth Stored
VARY: Inflow Vary inflow amount by: 2 gpm (user input) Total Gallons Stored
FIND: Cycle Time
T = Vol/(pump -inflow) + Vol/inflow
INFLOW, gom CYCLE TIME, min
2 215.0
4 109.4
6 74.2
8 56.6
Pump on
Pump off
(drain) time, min
(refill) time, min
3.6
211.5
3.6
105.7
3.7
70.5
�n
10
46.14
3.8
42.3
12
14
39.1
34.2
3.9
m 1 N I 4.0
35.2
30.2
16
18
30.5
27.6
4.0
e..t.►R-4` 1A 4.1
26.4
23.5
20
22
25.3
23.5
IO✓ t- 4.2
4.3
21.1
19.2
24
22.0
4.4
17.6
26
20.7
4.5
16.3
28
19.7
4.5
15.1
30
18.7
4.6
14.1
32
18.0
4.8
13.2
34
17.3
4.9
12.4
36
16.7
5.0
11.7
38
40
16.2
15.8
5.1
5.2
11.1
10.6
42
15.4
5.4
10.1
44
15.1
5.5
9.6
"Inf' indicates that inflow rate exceeds pumping rate, resulting in an infinite cycle time.
Pumping rate must be greater than inflow in order for pumps to cycle.
��Ka be
2edal<
4Neeoeo
C cic C`r�
GIVEN.
•�,�..oa�.st volulMe ,
6.0 Inflow = 10 gpm, (user input)
211.5 Pump Rate 121.0 gpm, (user input)
2.0
423.0 VARY: Cycle Time
FIND: Wetwell Volume req'd for given cycle time
Vol = ( (pump rate - inflow) * inflow * cycle time)
pump rate
CYCLE TIME, min VOLUME, gal
10 91.7
12 110.1
14 128.4
16 146.8
18 165.1
20 183.5
22 201.8
24 220.2
26 238.5
28 256.9
30 275.2
32 293.6
34 311.9
36 330.2
38 348.6
40 366.9
42 385.3
44 403.6
46 422.0
48 440.3
50 458.7

PUMP STATION DESIGN
WETWELL INSIDE CIA,
ACCESS HATCH
min. x Qin.
TOP OF WETWELL
ELEV. I
TOP THICKNESS, in
\\,/r
TABLE
SOIL
EAR
D
\\/
WALL r�THICKNESS. in.
D
TOM
HOPPGROU0LL
\\/
'•'
BOTTOBM OF WETWELL — ELEV.
\�%
THICKNESS, in.
BASE DIAMETER. It
G
0
WETWELL BUOYANCY CALCULATION FOR CONCRETE STRUCTURES
USER INPUT:
Top of Wetwell, elevation, "A"
171 ft
unit weght of water 62.4 pcf
Bottom Interior of Wetwell, elevation, "B
153.25 ft
Wetwell Inside Diameter, "C"
6 ft
unit weight of concrete 150 pcf
Wall Thickness, "D"
7 in
Top Thickness, "E"
10 in
unit weight of soil 100 pcf
Base Thckness, "F"
8 in
Base Diameter, "G"
8.50 ft
(6 ft dia. and larger wetwell utilize 8 inch extended base)
Access Hatch, "H" x "1"
36 in. X
48 in.
Interior ballast layer thickness
0 in
Outside bottom elevation of wetwell
152.58 ft
Overall structure height
18.42 ft
Water Table Elevation, "J"
171 ft
since wetwell located beneath 100 yr flood elevation, calculate
buoyancy with exterior water level at top of structure
CALCULATED VALUES:
Interior Volume of Wetwell
478.31 cu ft
(neglects hopper bottom grout fill and pumps)
Total Volume of Structure
753.85 cu ft
(includes total volume to exterior surfaces of structure)
Concrete Volume, Structure
265.54 cu ft
(neglects hopper bottom grout fill, removes volume for hatch)
Weight of Structure
39830.9 lbs.
(volume of concrete x unit weight of conc.)
(neglect weight of pumps, rails, &
hopper bottom conc. fill)
Buoyant Uplift
47040.1 lbs.
(volume of displaced water x unit wt. of water, neglects concrete of
extended base, since unit wt concrete > unit wt water & no net
uplift can occur until water level rises above top of base)
Weight of Soil Above Extended
10949.5 lbs.
((volume of soil x unit wt. of soil) -(submerged volume
Base of Wetwell
of soil x (unit wt. soil - unit wt. water)))
Net Buoyancy-3740.2 lbs. (uplift- wt of concrete -wt of soil) net negative buoyancy - - OK

valve vault flotation calc (structure similar to wetwell shown below)
SOIL
BASE THICKNESS. in
BASE DIAMETER R � r
BUOYANCY CALCULATION FOR CONCRETE VALVE VAULT
Top of vault, elevation, "A"
171 ft
Bottom Interior of vault, elevation, "B"
165.5 ft
Vault Inside Dimension, LxW
4.0 ft x
Nall Thickness, "D"
6 in
Top Thickness, "E"
6 in
Base Thckness, "F'
6 in
Base Outside Length x Width
5.00 ft x
Access Hatch, "H" x "1"
36 in. X
Interior ballast layer thickness
3.5 in
Outside bottom elevation of wetwell
164.71 ft
Overall structure height
6.29 ft
Water Table Elevation, "J"
171 ft
x Volume of Vault
Volume of Structure
rate Volume, Structure
it of Structure
°ct weight of pumps, rails, &
ar bottom conc. fill)
ant Uplift
ght of Soil Above Extended
e of Wetwell
Buoyancy
unit weght of water 62.4 pcf
6.0 ft unit weight of concrete 150 pcf
unit weight of soil 105 pcf
7.00 with all sides having a 0 inch extended base
60 in.
120.00 cu ft
(neglects hopper bottom grout fill and pumps)
220.21 cu ft
(includes total volume to exterior surfaces of structure)
92.71 cu ft
(neglects hopper bottom grout fill, removes volume for hatch)
13906.25 lbs.
(volume of concrete x unit weight of conc.)
13741.00 lbs. (volume of displaced water x unit wt. of water, neglects concrete of
extended base, since unit wt concrete > unit wt water & no net
uplift can occur until water level rises above top of base)
0.00 ((volume of soil x unit wt. of soil) -(submerged volume
of soil x (unit wt. soil - unit wt. water))) ^
-165.25 lbs. (uplift - wt of concrete - wt of soil) 4------'

RECEIVED
EQ/DWR
USE THE TAB KEY TO MOVE FROM FIELD TO FIELD
Application Number: MAR U 7 2016
(to be completed by DWR)
1.
Owner/Permittee:
1a.
City of Rockingham, NC
VVQRCS
Full Legal Name (company, municipality, HOA, utility, etc.)
7111J= T T[=,!!LLF RE7.�I. N
Z
1 b.
Monty R. Crump, City Manager
Signing Official Name and Title (Please review 15A NCAC 2T .0106 (b) for authorized signing officials)
1c.
The legal entity who will own this system is:
❑ Individual ❑ Federal ® Municipality ❑ State/County ❑ Private Partnership ❑ Corporation ❑ Other (specify):
0
1d.
514 Rockingham Road
le. Rockin ham
LL
Z
Mailing Address
City
1f.
N.C.
1 g. 28379
Z
State
Zip Code
1 h.
910.997.5546 1 i. 910.997.6617
1j. monty0gorockingham.com
Telephone Facsimile
E-mail
V2.
Proiect (Facility) Information:
J
2a.
School Pump Station Replacement
2b. Richmond
aBrief
Project Name (permit will refer to this name)
County Where Project is Located
Q
3.
Contact Person:
Q
3a.
Richard Byrd, PE, Davis & Floyd, Inc.
Name and Affiliation of Someone Who Can Answer Questions About this Application
3b.
843.430.0232
3c. [e-mail]
Phone Number _ _
E-mail
1.
Project is ® New ❑ Modification (of an existing permit) If Modification, Permit No.:
2.
Owner is ® Public (skip to Item 8(3)) ❑ Private (go to Item 2(a))
2a.
If private, applicant will be:
2b. If sold, facilities owned by a (must choose one
❑ Retaining Ownership (i.e. store, church, single office, etc.) or
❑ Leasing units (lots, townhomes, etc. - skip to Item B(3))
❑ Public Utility (Instruction D)
❑ Selling units (lots, townhomes, etc. - go to Item B(2b))
❑ Homeowner Assoc./Developer (Instruction E)
Z 3.
City of ockin ham, NC
Owner of Wastewater Treatment Facility (WWTF) Treating Wastewater From This Project
~
Q 4a.
City of Rockingham WWTP
4b. NC0020427
WWTF Permit No.
CITY OF ROCKINGHAM
514 ROCKINGHAM ROAD
ROCKINGHAM, N.C. 28379
PAY *y 8 DOLLARS AhJD0 CENTS�s•
PAY
TO THE NORTH CAROL INA DEPARTMENT OF
ENVIRONMENTAL. DUALITY
ORDER
OF
=FICE
BB&T
BRANCH BANKING & TRUST CO. 66-112
ROCKINGHAM,. NC 28379 531
NO. 064112
DATE CHECK NO, CHECK AMOUNT
THIS DISBURSEMENT HAS BEEN APPROVED AS REQUIRED BY
THE LOCAL GOVERNMENT BUDGET AND FISCAL CONTROL ACT.
VOID IF NOT RENTED FOR PAYMENT IN 60 DAYS.
j
AUTHORIZED SIGNATURE
FTA_ _ _ -

Central Files: APS _ SWP _
3/22/2016
Permit Number W00038340
Permit Tracking Slip
Program Category
Status Project Type
Non -discharge
Active New Project
Permit Type
Version Permit Classification
Gravity Sewer Extension, Pump Stations, & Pressure Sewer Extensions
1.00 Individual
Primary Reviewer
Permit Contact Affiliation
trent.allen
Coastal SWRule
Permitted Flow
0
Facility
Facility Name
Major/Minor
Region
School Pump Station Replacement
Minor
Fayetteville
Location Address
County
Richmond
Facility Contact Affiliation
Owner
Owner Name
Owner Type
City of Rockingham
Government - Municipal
Owner Affiliation
Monty R. Crump
514 Rockingham Rd
Dates/Events
Rockingham
NC 28379
Scheduled
Orig Issue App Received Draft Initiated
Issuance Public Notice Issue Effective Expiration
3/22/2016 3/7/2016
3/22/2016 3/22/2016
Regulated Activities
Requested /Received Events
Wastewater collection
Additional information requested
Additional information received
Outfall
Waterbody Name
Streamindex Number Current Class
Subbasin