WQ0039915_Issuance of Permit_20180413

KUY
COOPER
(rntier;nu
.' MICHAEL S. REGAN
LINDA CULPEPPER
Water Resources
Environmental Qualit
April 13, 2018
Stephanie Brixey, POTW Director
Durham County
Address
City, State, Zip
Subject: Permit No. WQ0039915
Durham County
Slater Rd. Pump Station Temporary Improvements
Wastewater Collection System Extension Permit
Durham County
Dear Ms. Brixey.:
In accordance with your application received February 26, 2018 we are forwarding herewith
Permit No. WQ0039915 dated April 13, 2018, to Durham County (Permittee) for the construction
and operation upon certification of the subject wastewater collection system extension. This
permit shall be effective from the date of issuance until October 13, 2018 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.
This is for a temporary capacity upgrade to a pump station until the permanent upgrade that is
covered under permit WQ0039225 is constructed and certified. This temporary upgrade was
approved through a variance that was issued by the Division on November 21, 2016.
Please pay particular attention to the following conditions contained within this permit:
Condition 11.1: This permit shall not be automatically transferable; a permit modification request
for a name change must first be approved by this office.
Condition 11.4: 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.
It shall be the responsibility of the Permittee 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.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within 30 days following receipt of
this permit. This request must be in the form of a written petition, conforming to Chapter 150B of
North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail
Division of Water Resources,Raleigh Regional Office,Water Quality Operations Section www.ncwaterquality.org
1628 Mail Service Center,Raleigh,NC 27699-1628. Phone:[phone]
l.ncation. 1800 Barrett Drive. Raleigh. NC 27609 Fax: [phone]

Durham County
Permit No. WQ0039915 '
Service Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be
final and binding.
If you need additional information concerning this matter, please contact Jason Robinson at
[phone]or via e-mail at Jas n.T.Ro f [e-mail].
Sincerely, -(
/
/+ is
for Linda Culpepper.
Interim Director, Division of Water Resources
by S. Daniel Smith, Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ
cc: Scott P. Haberstroh, PE: [e-mail]
Durham County Health Department
Raleigh Regional Office Files
Water Resources Central Files
Page 2 of 8
II

North Carolina Department of Environmental Quality
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENTAL QUALITY
WASTEWATER COLLECTION SYSTEM EXTENSION PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina
as amended, and other applicable Laws, Rules, and Regulations, permission is hereby granted
to the
Durham County
for the construction and operation of temporary capacity upgrades to the existing Slater Rd. Pump
Station. The temporary upgrades include utilizing a second diesel pump at the site (4 pump total)
to increase the design firm capacity to 425 GPM. This would be achieved through the operation
of one of the diesel pumps. The station already has on-site audible and visual high-water alarms,
telemetry, and a permanent generator with automatic transfer switch. The project will result in no
additional discharge of collected wastewater into Durham's County's existing sewerage system.
The upgrades are part of the Stirrup Iron Creek Lift Station Capacity Improvements project
pursuant to the application received February 26, 2018 and in conformity with 15A NCAC 2T; the
Division's Gravity Sewer Minimum Design Criteria adopted February 12, 1996 and updated in
March 2008, as applicable; the Division's Minimum Design Criteria for the Fast-Track Permitting
of Pump Stations and Force Mains adopted June 1, 2000 and updated March 2008, as applicable;
and other supporting data subsequently filed and approved by the Department of Environmental
Quality and considered a part of this permit.
This temporary capacity upgrade was approved through a variance that was issued by the
Division on November 21, 2016. This temporary upgrade will no longer be needed after the
permanent upgrade covered in permit WQ0039225 is constructed, certified and operational.
This permit shall be effective fro the d e of issuance until October 13, 2018 and shall be subject
to the specifie condition a M/mit "ns contained therein.
Linda Culpepper
Interim Director, Division of Water Resources
By Authority of The Environmental Management Commission
Permit Number: WQ0039915
Permit Issued: April 13, 2018
•
Page 3 of 8

SUPPLEMENT TO PERMIT COVER SHEET
Name of Applicant is hereby authorized to:
Construct, and then operate upon certification the aforementioned wastewater collection
extension. The sewage and wastewater collected by this system shall be treated in the Durham
County Triangle Wastewater Treatment Facility in accordance with Permit Number NC0026051
Permitting of this project does not constitute an acceptance of any part of the project that does
not meet 15A NCAC 2T; the Division's Gravity Sewer Minimum Design Criteria adopted February
12, 1996 and updated March 2008, as applicable; and the Division's Minimum Design Criteria for
the Fast-Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 and updated
March 2008, 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.
Construction and operation is contingent upon compliance with the Standard Conditions and any
Special Conditions identified below.
I. SPECIAL CONDITIONS
1. This permit will expire on October 13, 2018. Permit WQ0039225 will then cover this pump
station.
II. STANDARD CONDITIONS
1. This permit shall not be transferable. In the event there is a desire for the wastewater
collection facilities to change ownership, or there is a name change of the Permittee, a formal
permit request shall be submitted to the Division accompanied by documentation from the
parties involved, and other supporting materials as may be appropriate. The approval of this
request shall be considered on its merits and may or may not be approved. [15A NCAC
02T.0104; G.S 143-215.1(d3)]
2. This permit shall become voidable unless the wastewater collection facilities are constructed
in accordance with the conditions of this permit; 15A NCAC 2T; the Division's Gravity Sewer
Minimum Design Criteria adopted February 12, 1996 and updated March.2008, as applicable;
the Division's Minimum Design Criteria for the Fast-Track Permitting of Pump Stations and
Force Mains adopted June 1, 2000 and updated March 2008, as applicable; and other
supporting materials unless specifically mentioned herein. [15A NCAC 02T.0110]
3. This permit shall be effective only with respect to the nature and volume of wastes described
in the application and other supporting data. [15A NCAC 02T .0110]
4. The wastewater collection facilities shall be properly maintained and operated at all times.
The Permittee shall maintain compliance with an individual system-wide collection system
permit for the operation and maintenance of these facilities as required by 15A NCAC 2T
.0403. If an individual permit is not required, the following performance criteria shall be met:
[15A NCAC 02T .0108(b)]:
Page 4 of 8

a. The sewer system shall be effectively maintained and operated at all times to prevent
discharge to land or surface waters, and to prevent any contravention of groundwater
standards or surface water standards.
b. A map of the sewer system shall be developed and shall be actively maintained.
c. An operation and maintenance plan including pump station inspection frequency,
preventative maintenance schedule, spare parts inventory and overflow response has
been developed and implemented.
d. Pump stations that are not connected to a telemetry system shall be inspected every day
(i.e. 365 days per year). Pump stations that are connected to a telemetry system shall be
inspected at least once per week.
e. High-priority sewer lines shall be inspected at least once per every six-months and
inspections are documented.
f. A general observation of the entire sewer system shall be conducted at least once per
year.
g. Overflows and bypasses shall be reported to the appropriate Division regional office in
accordance with 15A NCAC 2B .0506(a), and public notice shall be provided as required
by North Carolina General Statute §143-215.10.
h. A Grease Control Program is in place as follows:
1. For public owned collection systems, the Grease Control Program shall include at least
biannual distribution of educational materials for both commercial and residential users
and the legal means to require grease interceptors at existing establishments. The
plan shall also include legal means for inspections of the grease interceptors,
enforcement for violators and the legal means to control grease entering the system
from other public and private satellite sewer systems.
2. For privately owned collection systems, the Grease Control Program shall include at
least bi-annual distribution of grease education materials to users of the collection
system by the permittee or its representative.
3. Grease education materials shall be distributed more often than required in Parts (1)
and (2) of this Subparagraph if necessary to prevent grease-related sanitary sewer
overflows.
i. Right-of-ways and easements shall be maintained in the full easement width for personnel
and equipment accessibility.
j. Documentation shall be kept for Subparagraphs (a) through (i) of this Rule for a minimum
of three years with exception of the map, which shall be maintained for the life of the
system.
5. The Permittee shall report by telephone to a water resources staff member at the Raleigh
Regional Office, telephone number(919) 791-4200, as soon as possible, but in no case more
than 24 hours, following the occurrence or first knowledge of the occurrence of either of the
following:
Page 5 of 8

a. Any process unit failure, due to known or unknown reasons, that renders the facility
incapable of adequate wastewater transport, such as mechanical or electrical failures
of pumps, line blockage or breakage, etc.; or
b. Any SSO and/or spill over 1,000 gallons; or
c. Any SSO and/or spill, regardless of volume, that reaches surface water
Voice mail messages or faxed information is permissible, but this shall not be considered as
the initial verbal report. Overflows and spills occurring outside normal business hours may
also be reported to the Division of Emergency Management at telephone number (800) 858-
0368 or [phone]. Persons reporting any of the above occurrences shall file a spill
report by completing and submitting Part I of Form CS-SSO (or the most current Division
approved form) within five days following first knowledge of the occurrence. This report must
outline the actions taken or proposed to be taken to ensure that the problem does not recur.
Part II of Form CS-SSO (or the most current Division approved form) can also be completed
to show that the SSO was beyond control. [G.S. 143-215.1 C(a1)]
6. Construction of the gravity sewers, pump stations, and force mains shall be scheduled so as
not to interrupt service by the existing utilities nor result in an overflow or bypass discharge of
wastewater to the surface waters of the State. [15A NCAC 02T.0108(b)]
7. Upon completion of construction and prior to operation of these permitted facilities, the
completed Engineering Certification form attached to this permit shall be submitted with the
required supporting documents to the address provided on the form. A complete certification
is one where the form is fully executed and the supporting documents are provided as
applicable. 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 permit
and shall subject the Permittee to appropriate enforcement actions.
If the permit is issued to a private entity with an Operational Agreement, then a copy of
the Articles of Incorporation, Declarations/Covenants/Restrictions, and Bylaws that
have been appropriately filed with the applicable County's Register of Deeds office
shall be submitted with the certification.
A complete certification is one where the form is fully executed and the supporting documents
are provided as applicable. Supporting documentation shall include the following:
a. One copy of the project construction record drawings (plan & profile views of sewer lines
& force mains) of the wastewater collection system extension. Final record drawings
should be clear on the plans or on digital media (CD or DVD disk) and are defined as the
design drawings that are marked up or annotated with after construction information and
show required buffers, separation distances, material changes, etc.
b. One copy of the supporting applicable design calculations including pipe and pump sizing,
velocity, pump cycle times, and level control settings, pump station buoyancy, wet well
storage, surge protection, detention time in the wet well, and force main, ability to flush
low points in force mains with a pump cycle, and downstream sewer capacity analysis. If
a portable power source or pump is dedicated to multiple stations, an evaluation of all the
pump stations' storage capacities and the rotation schedule of the portable power source
or pump, including travel timeframes, shall be provided.
c. Changes to the project that do not result in non-compliance with this permit, regulations,
or the Minimum Design Criteria should be clearly identified on the record drawings, on the
certification in the space provided, or in written summary form.
Page 6 of 8

Prior to Certification (Final or Partial): Permit modifications are required for any changes
resulting in non-compliance with this permit(including pipe length increases of 10% or greater,
increased flow, pump station design capacity design increases of 5% or greater, and
increases in the number/type of connections), regulations, or the Minimum Design Criteria.
Requested modifications or variances to the Minimum Design Criteria will be reviewed on a
case-by-case basis and each on its own merit. Please note that variances to the Minimum
Design Criteria should be requested and approved during the permitting process prior to
construction. After-construction requests are discouraged by the Division and may not be
approved, thus requiring replacement or repair prior to certification & activation. [15A NCAC
02T .0116]
8. Gravity sewers installed greater than ten percent below the minimum required slope per the
Division's Gravity Sewer Minimum Design Criteria shall not be acceptable and shall not be
certified until corrected. If there is an unforeseen obstacle in the field where all viable solutions
have been examined, a slope variance can be requested from the Division with firm supporting
documentation. This shall be done through a permit modification with fee. Such variance
requests will be evaluated on a case-by-case basis. Resolution of such request shall be
evident prior to completing and submitting the construction certification. [ 15A NCAC
02T.0105(n)]
9. A copy of the construction record drawings shall be maintained on file by the Permittee for the
life of the wastewater collection facilities. [15A NCAC 02T .0116]
10. Failure to abide by the conditions and limitations contained in this permit; 15A NCAC 2T; the
Division's Gravity Sewer Design Criteria adopted February 12, 1996 and updated March 2008,
as applicable; the Division's Minimum Design Criteria for the Fast-Track Permitting of Pump
Station and Force Mains adopted June 1, 2000 and updated March 2008 as applicable; and
other supporting materials may subject the Permittee to an enforcement action by the Division,
in accordance with North Carolina General Statutes §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. [15A NCAC 02T .0104;
15A NCAC 02T .0108(b-c)]
11. In the event that the wastewater collection facilities fail to perform satisfactorily, including the
creation of nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or
replacement facilities. [15A NCAC 02T .0110; 15A NCAC 02T .0108(b)]
12. The issuance of this permit shall not exempt the Permittee from complying with any and all
statutes, rules, regulations, or ordinances that may be imposed by the Division any other
Federal, State, or Local government agencies which have jurisdiction or obtaining other
anyother Federal, of Local
required bythe Division orState,
permits which may be
government agencies. [G.S. 143-215.1(b)]
Page 7 of 8

/1V I II r1V1% LI\V11\VtL1111\V ‘..01....1%1 II 'VI tIVR
PERMITTEE: Durham County
PERMIT#: WQ0039915
PROJECT: Slater Road Pump Station Improvements
ISSUE DATE: April 13, 2018
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 portions
thereof.
Printed Name, Title Signature Date
ENE 'S CERTIFICAT
I, as aGINduly registeredERProfessIONional Engineer in the State of North
Carolina, having been authorized to observe (n periodically, n weekly, n 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
construction 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 and updated March 2008, as applicable; the Division's
Minimum Design Criteria for the Fast-Track Permitting of Pump Stations and Force Mains adopted
June 1, 2000 and updated March 2008, as applicable; and other supporting materials.
North Carolina Professional Engineer's Seal w/signature & datE
❑ Final ❑ Partial (include description)
Certification Comments/Qualifiers (attach if necessary):
Division of Water Resources,Raleigh Regional Office,Water Quality Operations Section www.ncwaterquality.org
1628 Mail Service Center, Raleigh,NC 27699-1628 Phone:[phone]
T nratinn• ,RM Ran-Ptt Tlriv T?alri„h N(")7F(IQ Fav•/01Q1'7QR_'71SQ

State of North Carolina
DW R Department of Environmental Quality
Division of Water Resources
15A NCAC 02T.0300—FAST TRACK SEWER SYSTEM EXTENSION APPLICATION
Division of Water Resources INSTRUCTIONS FOR FORM:FTA 04-16&SUPPORTING DOCUMENTATION
This application is for sewer extensions involving gravity sewers, pump stations and force mains, or any combination that has been
certified by a professional engineer and the applicant that the project meets the requirements of 1.5A NCAC 02T and the Division's
Minimum Design Criteria and that plans,specifications and supporting documents have been prepared in accordance with, ISA
NCAC 021',ISA NCAC 02T.0300,Division policies and good engineering practices.
While no upfront engineering design documents are required for submittal, in accordance with 15A NCAC 02T .0305(b), design
documents must be prepared prior to submittal of a fast track permit application to the Division. This would include plans, design
calculations, and project specifications referenced in 15A NCAC 021' .0305 and the applicable minimum design criteria. These
documents shall be available upon request by the Division.
Projects that are deemed permitted(do not require a permit from the Division)are explained in I5A NCAC 1121.010.3.
Projects not eligible for review via the fast track process(must be submitted for full technical review):
' Projgcts that require an environmental assessment in accordance with ISA NCAC IC.0100;
' Projects that do not meet any part of the minimum design criteria(MDC)document;
➢ Projects that involve a variance from the requirements of 15A NCAC 2T;
D Pressure sewer systems utilizing septic tank-effluent pumps(STEPs)or simplex grinder pumps;
i STEP or simplex grinder pumps connecting to pressurized systems(e.g.force mains):
➢ Vacuum sewer systems.
General—When submitting an 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. Failure to submit all required items will necessitate additional
processing and review time,and may result in return of the application. Unless otherwise noted,the Applicant shall submit
one original and one copy of the application and supporting documentation.
A. One Original and One Copy of Application and Supporting Documents
® Required unless otherwise noted
B. Cover Letter(Required for All Application Packages):
® List all items included in the application package,as well as a brief description of the requested permitting action.
> Be specific as to the system type, number of homes served,flow allocation required,etc.
> If necessary for clarity,include attachments to the application form.
C. Application Fee(All New and Major Modification Application Packages):
® Submit a check or money order in the amount of$480.00 dated within 90 days of application suhmittal.
➢ Payable to North Carolina Department of Environmental Quality(NCDEQ)
D. Fast Track(Form:FTA 04-16)Application(Required for All Application Packages):
® Submit the completed and appropriately executed application.
➢ If necessary for clarity or due to space restrictions,attachments to the application may be made.
O If the Applicant Type in Item I.2 is a corporation or company, provide documentation it is registered for business with
the North Carolina Secretary of State.
O If the Applicant Type in Item I.2 is a partnership or d/b/a, enclose a copy of the certificate filed with the Register of
Deeds in the county of business.
® The Project Name in Item II.1 shall be consistent with the project name on the flow acceptance letters,agreements,etc.
El The Professional Engineer's Certification on Page 5 of the application shall be signed, sealed and dated by a North
Carolina licensed Professional Engineer.
® The Applicant's Certification on Page 5 of the application shall be signed in accordance with ISA 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).
INSTRUCTIONS FOR FORM:FTA 04-16&SUPPORTING DOCUMENTATION Page 1 of 3

E. Flow Tracking/Acceptance Form(Form: FTSE 04-16)(If Applicable):
® Submit the completed and executed FTSE form from the owners of the downstream sewers and treatment facility.
• Multiple forms maybe required where the downstream sewer owner and wastewater treatment facility are different.
➢ The flow acceptance indicated in form FTSE 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 indicates that owner has adequate capacity and will not violate G.S. I43-
215_67(a).
• Intergovernmental agreements or other contracts will not be accepted in lieu of a project-specific FTSE.
F. Site Maps(All Application Packages):
O 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.
➢ Location of the project(gravity sewer,pump stations& force main)
• Downstream connection points and permit number(if known)for the receiving sewer
• Include a street level map(aerial)showing general project area so that Division staff can easily locate it in the field.
G. Existing Permit(All Modification Packages):
• 0 Submit the most recently issued existing permit. • •
o Provide a list of any items within the permit the Applicant would like the Division to address during the permit
modification(i.e.,permit description,flow allocation,treatment facility,etc.).
H. Power Reliability Plan(Required if portable reliability option utilized for Pump Station):
❑ Per 15A NCAC 02T.0305(h)(1), submit documentation of power reliability for pumping stations.
This alternative is only available for average daily flows less than 15,000 gallons per day
Y It shall be demonstrated to the Division that the portable source is owned or contracted by the applicant and is compatible
with the station. The Division will accept a letter signed by the applicant (see 15A NCAC 02T .0106(b)) or proposed
contractor,stating that"the portable power generation unit or portable,independently-powered pumping units,associated
appurtenances and personnel are available for distribution and operation of this pump station."
If the portable power source or pump is dedicated to multiple pump stations, an evaluation of all the pump
stations' storage capacities and the rotation schedule of the portable power source or pump, including travel
timeframes,shall be provided in the case of a multiple station power outage.(Required at time of certification)
I. Certificate of Public Convenience and Necessity(All Application Packages for Privately-Owned Public Utilities):
❑ Per ISA NCAC 02T .0115(10(1)provide 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 a letter from the North Carolina Utilities Commission's Water and Sewer Division 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.
J. Operational Agreements(Applications from HOA/POA and Developers for lots to be sold):
❑ Home/Property Owners' Associations
❑ Per 15A NCAC 02T.0115(c),submit the properly executed Operational Agreement(FORM: HOA).
❑ Per 15A NCAC 02T.0115(c),submit a copy of the Articles of Incorporation,Declarations and By-laws.
❑ Developers of lots to be sold
o Per 15A NCAC 02T.0115(b),submit the properly executed Operational Agreement (FORM: DEV). 1
For more information, visit the Division's collection systems website
INSTRUCTIONS FOR FORM:FTA 04-16&SUPPORTING DOCUMENTATION Page 2 of 3

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, Harnett, 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 FORM: FT 04-16
A &SUPPORTING DOCUMENTATION Page 3 of 3
l

State of North Carolina
DIVR Department of Environmental Quality
Division of Water Resources
15A NCAC 02T.0300—FAST TRACK SEWER SYSTEM EXTENSION APPLICATION
Division of Water Resources FTA 04-16&SUPPORTING DOCUMENTATION
Application Number: WOQ(�5I"1 I (to be completed by DWR)
All items must be completed or the application will be returned
I. APPLICANT INFORMATION:
1. Applicant's name: Durham County(company, municipality,HOA,utility,etc.)
2. Applicant type: 0 Individual 0 Corporation 0 General Partnership ❑Privately-Owned Public Utility
0 Federal ®State/County 0 Municipal 0 Other
3. Signature authority's name:Stephanie Brixey per 15A NCAC 02T.0106(b) ' rH
NC Dept of Environmental Oak,
Title: POTW Director
4. Applicant's mailing address:5926 HWY 55 East FEB 2 6 2018
City:Durham State:NC Zip:27713-
5. Applicant's contact information: Raleigh Regional Office
Phone number:[phone] Email Address:[e-mail]
II. PROJECT INFORMATION:
I. Project name:Slater Road Pump Station Improvements
2. Application/Project status: ®Proposed(New Permit) 0 Existing Permit/Project
If a modification,provide the existing permit number:WQ00 and issued date: Built 1992
If new construction but part of a master plan,provide the existing permit number:WQ00
3. County where project is located:Wake
4. Approximate Coordinates(Decimal Degrees): Latitude: 35.8690° Longitude: -78.8317°
5. Parcel ID(if applicable):
(or Parcel ID to closest downstream sewer)
III. CONSULTANT INFORMATION:
1. Professional Engineer:Scott P.Haberstroh License Number:36505
Firm:Freese and Nichols,Inc.
Mailing address: 1017 Main Campus Drive. Suite 1200
City:Raleigh State:NC Zip: 27606-
Phone number:[phone] Email Address:[e-mail]
IV. WASTEWATER TREATMENT FACILITY(WWTF)INFORMATION:
1. Facility Name:Triangle Wastewater Treatmenf Plant Permit Number: NC002605I
Owner Name:Durham County
V. RECEIVING DOWNSTREAM SEWER INFORMATION(if different than WWTF):
I. Permit Number(s):WQBuilt 1983 Dovtinstream(Receiving)Sewer Size: 16 inch
d
System Wide Collection System Permit Numbr(s)(if applicable):WQCS00038
Owner Name(s):Durham County Sewer
FORM:FTA 04-16 Page 1 of 5

VI. GENERAL REQUIREMENTS
1. If the Applicant is a Privately-Owned Public Utility,has a Certificate of Public Convenience and Necessity been attached?
❑Yes ❑No ®N/A
2. If the Applicant is a Developer of lots to be sold,has a Developer's Operational Agreement(FORM: DEV)been attached?
❑Yes ❑No EN/A
3. If the Applicant is a Home/Property Owners'Association. has an Operational Agreement(FORM: HOA)been attached?
❑ Yes ❑No ®N/A
4. Origin of wastewater:(check all that apply):
❑Residential Owned 0 Retail (stores,centers,malls) ❑Car Wash
❑Residential Leased 0 Retail with food preparation/service ❑Hotel and/or Motels
❑School/preschool/day care 0 Medical/dental/veterinary facilities ❑Swimming Pool/Clubhouse
❑Food and drink facilities 0 Church ❑Swimming Pool/Filter Backwash
❑Businesses/offices/factories 0 Nursing Home ❑Other(Explain in Attachment)
5.
Nature of wastewater : N/A%Domestic/Commercial N/A%Commercial
N/A%Industrial(See ISA NCAC 02T.0103(20)) •
)Is there a Pretreatment Program in effect? 0 Yes ®No
6. Has a flow reduction been approved under 15A NCAC 021.0114(0? 0 Yes ®No
If yes,provide a copy of flow reduction approval letter
7. Summarize wastewater generated by project:
Establishment Type(see 02T.0114(f)) Daily Design Flow a.b No.of Units Flow
No new flow generated as result of project. gal/ GPD
gal/ GPD
gal/ GPD
gal/ GPD
gal/ GPD
gal/ GPD
Total GPD
a See ISA 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 ISA NCAC 02T.0114(c),design flow rates for establishments not identified fin table ISA NCAC 02T.01 14]shall be
determined using available flow data,water using fixtures,occupancy or operation patterns,and other measured data.
8. Wastewater generated by project:0 GPD(per I5A NCAC 02T.0114)
T% Do not include future flows or previously permitted allocations
If permitted flow is zero,indicate why:
®Pump Station or Gravity Sewer where flow will be permitted in subsequent permits that connect to this line
❑Flow has already been allocated in Permit Number:
❑Rehabilitation or replacement of existing sewer with no new flow expected
❑Other(Explain):
FORM:FFA 04-16 Page 2 of 5

VII. GRAVITY SEWER DESIGN CRITERIA (If Applicable)-02T.0305&MDC(Gravity Sewers):
1. Summarize gravity sewer to be permitted:
Size(inches) Length(feet) Material
➢ Section II&III of the MDC for Permitting of Gravity Sewers contains information related to design criteria
➢ Section III contains information related to minimum slopes for gravity sewer(s)
➢ Oversizing lines to meet minimum slope requirement is not allowed and a violation of the MDC
VIII. PUMP STATION DESIGN CRITERIA (If Applicable)—02T.0305&MDC(Pump Stations/Force Mains):
COMPLETE FOR EACH PUMP STATION INCLUDED IN THIS PROJECT
1. Pump station number or name: Slater Road Pump Station
2. Approximate Coordinates(Decimal Degrees):Latitude:35.8690° Longitude: -78.8317°
3. Design flow of the pump station: 0.612 millions gallons per day(firm capacity)
4. Operational point(s)of the pump(s): 425 gallons per minute at 235 feet total dynamic head(TDH)
5. Summarize the force main to be permitted(for this Pump Station):
Size(inches) Length(feet) Material
6. Power reliability in accordance with 15A NCAC 02T.0305(h)(1):
® Standby power source or pump with automatic activation and telemetry- 15A NCAC 02T.0305(h)(I)(B)_
D Required for all pump stations with an average daily flow greater than or equal to 15,000 gallons per day
➢ Must be permanent to facility
Or if the pump station has an average daily flow less than 15,000 gallons per day:
❑ Portable power source with manual activation,quick-connection receptacle and telemetry- I5A NCAC 02T
.0305(h)(1)(C)
or .
❑ Portable pumping unit with plugged emer ency pump connection and telemetry- 15A NCAC 02T.0305(h)(I)(C):
➢ It shall be demonstrated to the Division th t the portable source is owned or contracted by the applicant(draft agreement)
and is compatible with the station.
Y If the portable power source or pump is de icated to multiple pump stations,an evaluation of all the pump stations'storage
capacities and the rotation schedule of the portable power source or pump, including travel timeframes, shall be provided
in the case of a multiple station power outage.
FORM:FTA 04-16 Page 3 of 5

IX. SETBACKS&SEPARATIONS—(02B.0200& 15A NCAC 02T.0305(f)):
1. Does the project comply with all separations found in 15A NCAC 02T.0305(1)&(g) ®Yes ❑No
➢ 15A NCAC 02T.0305(1)contains minimum separations that shall be provided for sewer systems:
Setback Parameter* Separation Required
Storm sewers and other utilities not listed below(vertical) 24 inches
Water mains(vertical-water over sewer including in benched trenches) 18 inches
Water mains(horizontal) 10 feet
Reclaimed water lines(vertical-reclaimed over sewer) 18 inches
Reclaimed water lines(horizontal-reclaimed over sewer) 2 feet
**Any private or public water supply source,including any wells,WS-I waters of Class I or
Class H impounded reservoirs used as a source of drinking water 100 feet
**Waters classified WS(except WS-I or WS-V),B,SA,ORW,HQW,or SB from normal
high water(or tide elevation)and wetlands(see item IX.2) 50 feet
**Any other stream,lake,impoundment,or ground water lowering and surface drainage
ditches 10 feet
Any building foundation 5 feet
Any basement 10 feet
Top slope of embankment or cuts of 2 feet or more vertical height 10 feet
Drainage systems and interceptor drains 5 feet
Any swimming pools 10 feet
Final earth grade(vertical) 36 inches
➢ ISA NCAC 02T.0305(g)contains alternatives where separations in 02T.0305(f)cannot be achieved.
➢ **Stream classifications can be identified using the Division's NC Surface Water Classifications webpage
➢ If noncompliance with 02T.0305(1)or(g).see Section X of this application
•
2. Does the project comply with separation requirements for wetlands?(50 feet of separation) ❑Yes 0 No ® N/A
➢ See the Division's draft separation requirements for situations where separation cannot be meet
A No variance is required if the alternative design criteria specified is utilized in design and construction
A As built documents should reference the location of areas effected
3. Does the project comply with setbacks found in the river basin rules per 15A NCAC 02B .0200? ❑ Yes ❑ No ®N/A
A This would include Trout Buffered Streams per ISA NCAC 2B.0202
4. Does the project require coverage/authorization under a 404 Nationwide or 0 Yes ®No
individual permits or 401 Water Quality Certifications?
➢ Information can be obtained from the 401 & Buffer Permitting Branch
5. Does project comply with 15A NCAC 02T.0105(c)(6)(additional permits/certifications)? ❑Yes ®No
Per 15A NCAC 02T.0105(c)(6),directly related environmental permits or certification applications are being prepared,have
been applied for,or have been obtained. Issuance of this permit is contingent on issuance of dependent permits(erosion and
sedimentation control plans.stormwater management plans,etc.).
6. Does this project include any sewer collection lines that are deemed"high-priority?"
Per 15A NCAC 02T.0402, "high-priority sewer"means"any aerial sewer, sewer contacting surface waters,siphon,or sewer
positioned parallel to streambanks that is subject to erosion that undermines or deteriorates the sewer.
❑Yes ❑No ►�4 N/A
> If yes,include an attachment with details for each line,including type(aerial line,size,material,and location).
High priority lines shall be inspected by the permittee or its representative at least once every six-months and inspections
documented per 15A NCAC 02T.0403(a)(5)or the permitee's individual System-Wide Collection permit.
FORM:FTA 04-16 Page 4 of 5

X. CERTIFICATIONS:
1. Does the submitted system comply with 1$A NCAC 02T,the Minimum Design Criteria for the Permitting of Pump Stations
and Force Mains(latest version).and the Gravity Sewer Minimum Design Criteria(latest version)as applicable?
®Yes ❑No
If No,complete and submit the Variance/Alternative Design Request application(VADC 10-14)and supporting documents for
review. Approval of the request is required prior to submittal of the Fast Track Application and supporting documents.
2. Professional Engineer's Certification:
1, Scat— 4 r5rrti attest that this application for
(Professional Engineer's name from Application Item III.1.)
has been reviewed by me and is accurate,complete and consistent with the information supplied in the plans,specifications,
engineering 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
Minimum Design Criteria for Gravity Sewers(latest version),and the Minimum Design Criteria for the Fast-Track Permitting
of Pump Stations and Force Mains(latest version). 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 General Statutes 143-215.6A and 143-215.6B, any person who knowingly makes any false
statement, representation, or certification in any application package 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.
North Carolina Professional Engineer's seal,signature,and date: ,,....�N t�CAtRr4,,
,Q` OFES 0�j�';
fp 1
3. Applicant's Certification per 15A NCAC 02T.0106(b): /41
Z cf...//a)
1, 5tQk1eAVQ/-ThiCoLLut tiA- 0 attest that this application for
(Signature Authority's name&title from Application Item 1.3.)
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. I understand that any discharge of wastewater from this non-
discharge system to surface waters or the land will result in an immediate enforcement action that may include civil penalties,
injunctive relief,and/or criminal prosecution. I will make no claim against the Division of Water Resources should a condition
of this permit be violated. I also understand that if all required parts of this application package are not completed and that if
all required supporting information and attachments are not included, this application package will be returned to me as
incomplete.
NOTE — In accordance with General Statutes 143-215.6A and 143-215.6B, any person who knowingly makes any false
statement, representation, or certification in any application package 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.
p 3
Signature: � \n Q jF Date:
V r
FORM:FTA 04-16 Pagr 5 of 5

•
k
State of North Carolina
Department of Environmental Quality
Division of Water Resources
Division of Water Resources Flow Tracking/Acceptance for Sewer Extension Applications
(FTSE 04-16)
Entity Requesting Allocation: Durham County
Project Name for which flow is being requested: Slater Road Pump Station Improvements
More than one FTSE may be required for a single project if the owner of the WWTP is not responsible for all pump
stations along the route of the proposed wastewater flow.
I. Complete this section only if you are the owner of the wastewater treatment plant.
a. WWTP Facility Name: Triangle Wastewater Treatment Plant
b. WWTP Facility Permit #: NC0026051
All flows are in MGD
c. WWTP facility's permitted flow 12
Y
d. Estimated obligated flow not yet tributary to the WWTP 2.073
e. WWTP facility's actual avg. flow 4.857
f. Total flow for this specific request 0
g. Total actual and obligated flows to the facility 6.930
h. Percent of permitted flow used 57.75
II. 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:
(A) (B) (C) (D)=(B+C) (E)=(A-D)
Design Obligated,
Pump Average Daily Approx. Not Yet Total Current
Station Firm Flow** Current Avg. Tributary Flow Plus
(Name or Capacity, * (Firm/pf), Daily Flow, Daily Flow, Obligated Available
Number) MGD MGD MGD MGD Flow Capacity***
L-)et- Slater 0.350 0.140 0.156 0.019 0.175 -0.035
Qt• Slater 0.612 0.245 0.156 0.019 0.176 0.069
Stirruplron 3.751 1.500 1.142 0.202 1.344 0.156
* The Firm Capacity of any pump station is defined as the maximum pumped flow that
can be achieved with the largest pump taken out of service.
** Design Average Daily Flow is the firm capacity of the pump station divided by a peaking
factor(pi) not less than 2.5.
*** A Planning Assessment Addendum shall be attached for each pump station located
between the project connection point and the WWTP where the Available Capacity is<0.
Downstream Facility Name(Sewer): Durham County Sewer
Downstream Permit Number: WQCS00038
Page 1 of 6
FTSE 04-16

III. Certification Statement:
I 5 kte cn,il 'tel c; certify to the best of my knowledge that the addition of
the volume of wastewater to be ermitted in this project has been evaluated along the route to the
receiving wastewater treatment facility and that 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, given the implementation of
the planned improvements identified in the planning assessment where applicable. 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 II plus all
attached planning assessment addendums for which I am the responsible party. Signature of this
form indicates acceptance of this wastewater flow.
Signing ,ficial Signature h Date
Page 2 of 6
FTSE 04-16

FREESE Innovative approaches
f lICHOLS Practical results
�l
a Outstanding service
1017 Main Campus Dr,Suite 1200 • Raleigh, North Carolina 27606 • 919-582-5859 • fax [phone] www.freese.com
NC Dept of Environmental Quality
February 20, 2018
FEB 262018
North Carolina Department of Environmental Quality
Water Quality Section Raleigh Regional Office
1628 Mail Service Center
Raleigh, NC 27699-1682
Re: Durham County
Slater Road Pump Station •
Fast Track Sewer System Extension Application (FTA 04-16 and FTSE 04-16)
To Whom It May Concern:
On behalf of Durham County,and in accordance with 15A NCAC subchapter 02T and the Division of
Water Resources Minimum Design Criteria, please find enclosed the following documents associated
with the proposed modifications to the Slater Road Pump Station:
• Fast Track Sewer System Extension Application
• Flow Tracking/Acceptance Form
• Site Maps
• Variance Request Application and Approval dated November 21, 2016
• Wastewater Collection System Extension Permit WQ0039225 dated May 24, 2017
• Application Fee (Note: The fee check for$960 is written to cover the application fees for two (2)
projects that are being submitted by Durham County at the same time. The other project is the
Stirrup Iron Creek Lift Station.)
The history of the project is as follows:
• October 21,2016—Durham County submits a Variance Request to increase the firm capacity by
installing an additional bypass pump onsite,to address pending growth and increased flow to
the lift station.
• November 21, 2016—Durham County receives Variance Approval.
• April 7, 2017—Durham County submits a Fast Track Sewer Extension Application for the
permanent improvements to install larger pumps and increase the lift stations firm capacity to
425 gpm.
• May 24, 2017—Durham County receives approval for Wastewater Collection System Extension
Permit WQ0039225.
Due to a delay in the manufacturers lead time on the equipment necessary for the permanent
improvements and to address the current need for increased capacity due to pending growth, Durham
County is requesting authorization to install a temporary bypass pump in accordance with the Variance
Request Approval until the permanent improvements as approved in Permit No.WQ0039225 have been
constructed and certified.

Please feel free to contact me at [phone] if you have any questions or require additional
information. I can also be reached at [e-mail].
Sincerely,
Scott P. Haberstroh, P.E.
Project Manager
Copy to: Kyle Manning, PE, Durham County
Stephanie Brixey, Durham County

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AAI MCSRORY
DONALD R. VAN DER VAART
Water Resources
ENVIRONMENTAL OUf1LtrY S. JAY ZIMMERMAN
November 21,2016
Joe Pearce,POTW Director
Durham County
5926 Hwy 55 East
Durham, NC 27716
Subject: Variance Request Approval
Slater Road Pump Station
Durham County
Dear Mr. Pearce:
The Division of Water Resources (Division) has reviewed the submitted variance request, as well as the additional
information submitted November 21, 2016 for the subject project. The Division will grant the variance request for
a temporary flow capacity increase(450 GPM)at the Slater Road Pump Station. This approval will require submittal
of an application and supporting document to the Raleigh Regional Office. The Division reserves the right to include
an expiration date as a condition of permit approval.
Regardless of the variance approval, in the event that the wastewater collection facilities fail to perform
satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action,
including those as maybe required by this Division,such as the construction of additional%Jr replacement facilities.
All other elements of this project shall be constructed in accordance with all applicable rules and statues including,
15A NCAC 2T;the Division of Water Resources'(Division)Gravity Sewer Minimum Design Criteria adopted February
12, 1996 as applicable; and the Division's Minimum Design Criteria for the Fast-Track Permitting of Pump Stations
and Force Mains adopted June 1,2000 as applicable. Approval of the variance request does not constitute approval
of the permit.
If you have any questions, please contact Michael Leggett, P.E. at 919-807-6312 or via email at
michael.leggettPncdenr.>?ov.
Sincerely,
�> �s 1,
for Jay Zimmerman,P.G.
Director, Division of Water Resources
by Deborah Gore,PERCS Supervisor
Division of Water Resources,NCDEQ
enclosures(all)
cc: Scott Haberstroh,PE—Freese and Nichols, Inc.
Raleigh Regional Office,Water Quality Section Regional Operations
PERCS Files(electronic copy)
State of North Carolina I Environmental Quality I Water Resources
1611 Mail service Center ( Raleigh,North Cawlma 27699-161 I
919 807 6300

����SC Innovative approaches
irmsults
°NICHOLS OutstandingPractini nse
< service
1017 Main Campus Dr,Suite 1200 • Raleigh,North Carolina 27606 • 919-582-5859 • fax [phone] www.freese.com
October 21, 2016
Michael Leggett, P.E.
State of North Carolina-Department of Environmental Quality Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Variance/Alternative Design Request-Slater Road Lift Station, Durham County
Dear Mr. Leggett,
As a follow up to your conversation with Freese and Nichols, Inc. on October 14th, please fine enclosed
Durham County's Variance/Alternative Design Request for the Slater Road Lift Station located at 763 Slater
Road in Morrisville. The request is specific to 15A NCAC 21.0305(h)(1)(A) 1.which states that"Multiple
pumps shall be used such that the pump station is capable of conveying the peak hourly flow to its desired
outfall location with the largest single pump out of service".
The lift station was originally designed and constructed for an average flow of 140 gallons per minute (gpm)
with a peaking factor of 2.5 for a total firm design capacity of 350 gpm. To convey this flow to the Nelson
outfall downstream,the lift station is equipped with dual 30 HP dry pit centrifugal pumps each rated at 350
gpm @ 141'TDH. Due to pending and rapid development in the surrounding area,updated flow projections
indicate that the capacity of the lift station will need to be increased to approximately 450 gpm to
accommodate an average day flow of 180 gpm and a peaking factor of 2.5. The County recently installed a 4-
inch diesel bypass pump on a concrete pad as a backup to the existing pumps. This bypass pump, rated at
490 gpm, uses a suction line from the manhole upstream of the wet well and discharges into the existing
bypass pump connection to the force main.
To address the pending growth and increased flows to this station,we are working with the County on the
design, permitting and construction for a permanent solution to increase the station capacity. As an interim
solution to address the near term additional anticipated flow and allow for the required 2.5 peaking factor,
the County is proposing to install an additional bypass pump onsite until completion of the permanent
solution. This additional pump will be an electric driven pump with similar capacity as the existing diesel
pump,thereby providing a firm capacity well in excess of the 450 gpm needed for the growth. This pump will
be installed on a concrete pad and connected to the existing electrical service. As the permanent solution is
in progress,the County is requesting approval of this plan to allow development to progress as planned.
In support of this Variance/Alternative Design Request the following are attached:
• Figure 1: Lift station site plan
• Figure 2: System curve with existing and proposed pump curve overlay
• Proposed electric bypass pump cut sheet.
Please feel free to contact me at 919.582.5867 or at scott,[e-mail] with any questions.
Sincerely,
fs
Scott Haberstroh, P.E.
Senior Project Manager

State of North Carolina
Department of Environment and Natural Resources
Division of Water Resources
15A NCAC 02T AI05—VARIANCE/ALTERNATIVE DESIGN REQUEST
Division of Water Resources VADC 10-14 &SUPPORTING DOCUMENTATION
Application Number: (If applicable,to be completed by DWR)
I. APPLICANT INFORMATION:
1. Applicant's name:Joe Pearce
2. Applicant type: ❑Individual ❑Corporation ❑General Partnership ❑Privately-Owned Public Utility
❑Federal ❑State ❑ Municipal ®County
3. Signature authority's name:Durham County per 15A NCAC 02T.0106(b) Title:P01W Director
4. Applicant's mailing address:5926 HWY 55 East
City:Durham State:North Carolina Zip: 27713-
5. Applicant's contact information:
Phone number:[phone] Email Address: ipearce(dconc.gov
II. PROJECT INFORMATION:
1. Project name:Slater Road Pump Station
2. Project status:® Proposed ❑ Existing(if existing, Permit Number:
III. CONSULTANT INFORMATION:
1. Professional Engineer:Scott Haberstroh License Number:036505
Firm:Freese and Nichols,Inc
Mailing address: 1017 Main Campus Drive,Suite 1200
City:Raleigh State:North Carolina Zip:27606-
Phone number:[phone] Email Address:scott.haberstroh(a freese.com
IV. VARIANCE REQUEST:
1. Provide a detailed lig of specific criteria that a variance request is submitted for:
(e.g.,NCAC 02T.0305(f)-Separation,MDC for Pump Stations/Force Mains 3.04(A)(1)(b)—Discharge Piping Velocity,etc)
15A NCAC 2T.0305(h)(1)(A)-Conveying peak hourly wastewater flow to its desired outfall location with the largest single
pump out of service.
FORM: VADC 10-14 Page 1 of 2

FREESE FIGURE 2
' I NICHOLS Slater Road Lift Station
8" Force Main System Curve (C=100)
300 .
250
200 ,_- i i
i
Slater Rd PS System Curve
�� _ _� Existing 4-inch Bypass Pump Curve
roa)
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Proposed 6-inch Bypass Pump Curve
150 — --Existing 30 Hp Dry Pit Pump Curve(Factory) -
1 Existing 30 Hp Dry Pit Pump Curve(Actual)
j i.
100
50 —
0 100 200 300 400 500 600 700 800 900
Flow(gpm)

1
;

THOMP50N 4" Compressor-Assisted Solids Handling Pump
PUMP Model: 4JSCD-EBS-100
EXPERIENCE INNOVATION ENVIRCIrrr
With its heavy-duty cast-iron construction, ability to dry-prime and re-prime automatically, this end-
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for moderate flows to 1,325 gpm and high heads to 265 feet making it perfect for sewage bypass
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ENVIROPRIME SYSTEMwith Corn •ressor
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r " . •� Materials
`' Pump Casing Heavy-duty class 30 cast-iron
l. Impeller Dynamically balanced, non-clogging, enclosed, castlye
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and prolong seal and bearing life; diameter 14"
` Mechanical Seal 2.5" run-dry, oil or grease lubricated with Tungsten
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Shaft High quality'stress-proof steel and fitted with a renew-
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TECHNICAL SPECIFICIATIONS
Suction Size 4" (15.24 cm) Approximate Weight TBD
Discharge Size 4" (10.16 cm) Maximum Operating Speed 1800 rpm (motor cap)
Maximum Flow Capacity 1325 gpm (301 m3/h) Maximum Operating Temp. 200°F (93.33°C)
Maximum Head 265 ft(81 m) Maximum Operating Pressure 115 psi (791 kPa)
Maximum Solids Handling 3" (7.62 cm) Best Efficiency Point 78%
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350
- 2000- -
330 RPM ._- __ _ _ .. - 100
300 _ 6026 _L._ •�, ` L....4_
-
-
•.�� "`� 70% ''%- 74% 76% 7795
80
-; _
1800-RpM t � ` i
• ��..__ f----
-250 - ,� a
�. i 3ti0`I -
.0 1600 RpM �'` �.. �EtP
0 200 i �-_ '
13
_ — `` ,� ` 60CO
a;
— &�iyQ =
'E _1,400_R.P r - u
FM -�.
ro 150 ��w'•�.•�Ardir � .E
_ ��. -y. cC
rAMONFAir
I - AlinriAallir �.,. ."44 SONO - 3
•130-RPM �' 1� dt�sillIll.AMIIVAIWOOPP ....app._ --- ....... ..... 41?/�p - 1-
800-RPM "- ,... QHP -- 20
50 Al:L!I�=
10Hp -
_ 22 gFT
0 I L I I t t 1' I t I + t t t I TS FT 1 1 1 1 20 FT* 11,FT X0 1 I I ill 0
0 200 400 600 800 1,000 1,200 1,400 1,600 GPM
I I I I I I I I I I I I I I I i I I I I I I I I I I- I I i I I I I I I I I
0 50 100 150 200 250 300 350 m3/hr
Capacity
Motor Specification
Full Load (FL) and FL efficiency: 94.5%, FL Torque : 295 ft-lbf
Engine Model Baldor EM4400T, 100 hp @ 1800 rpm
No Load(NL) information NL Current: 38.5 amps
Type Variable frequency motor, 460 VAC with 405T frame Automatic Shutdowns High temperature
Specifications and illustrations are subject to revision without notice and without incurring any obligation for previous or subsequent equipment sold.Thompson Pump(ISO 9001:2008)makes no repre-
sentation regarding the completeness or accuracy of this information and is not liable for any direct or indirect damages arising from or relating to this information or its use.Capacity&Head are shown
for comparative purposes.Consult Thompson factory for exact capabilities.

Scott Haberstroh
From: Scott Haberstroh
Sent: Monday, November 21, 2016 11:32 AM
To: 'Leggett, Michael'; Pearce, Joseph R.
Cc: Bryan Jann
Subject: RE: Slater Road Pump Station Variance Request
Michael,
Responses to your comments are below in red. Please let us know if you have any questions.
Thanks,
Scott •
Scott Haberstroh, PE
Senior Project Manager
Freese and Nichols,Inc.
919-582-5867 office
617-997-7425 mobile
From: Leggett, Michael [mailto:[e-mail]]
Sent:Wednesday, November 16, 2016 9:13 AM
To: Pearce,Joseph R.<[e-mail]>;Scott Haberstroh <[e-mail]>
Cc: Leggett, Michael<[e-mail]>
Subject:Slater Road Pump Station Variance Request
Joe/Scott:
A review of the variance application and supporting documents has been completed by this office. In accordance with
15A NCAC 02T.0107,please provide the additional or revised information in accordance with the following comments:
1. Please provide an expected firm capacity of the lift station with the existing bypass pump. The Division assumes
the facility will operate in accordance with 15A NCAC 02T.0305(h)(1) (Audible/visual alarms provided,
SCADA/Telemetry will be incorporated in case of failure at the bypass pump,etc.). Based on recently
performed drawdowns tests, the current firm capacity of the pump station is approximately 243 gpm. With the
second bypass pump installed as proposed,the firm capacity of the pump station will increase to approximately
450 gpm. Under this condition, it is anticipated that the existing lift station pumps will not operate and as such
their capacity is not included in the calculation. The facility will continue to operate in accordance with 15A
NCAC 02T.0305(h)(1) using the current SCADA/Telemetry alarms.
2. Please provide additional information related to the operational ability of the proposed bypass pump. The
Division would assume that this bypass pump operates in accordance with 15A NCAC 02T.0305(h)(1)(B),which
requires that the standby pump will automatically active during an alarm condition. During high flows,the
existing bypass pump activates at the wet well high-high level. When the second bypass pump is installed,the
two bypass pumps will operate as a lead-lag system with the lag pump activating at a level 1 foot above the
high-high level.
1

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•
1

i
3. Please provide additional information related to the timeline for implementation of a permanent solution for
this facility. The permanent solution is currently under design and expected to be in service within 9 months.
4. Prior to operation of this arrangement, the Division will require Durham County to submit an application for
permit to the Raleigh Regional Office. The regional office will review and contingent on approval issue a
permit. The Division reserves the right to include an end date to this permit that requires implementation of the 1
permanent capacity increase or request additional information. As requested, Durham County will submit a Fast
Track Application permit for approval prior to installation of the second bypass pump.
5. The Division will request 48-hour notification prior to the operation of this arraignment.Acknowledged.
A response to the above comments is considered required in order to proceed with the review of the application and
issuance of the approval. If you have any questions feel free to contact me below.
Michael Leggett, PE
Engineer
Water Quality Permitting—PERCS Unit
Division of Water Resources- Department of Environmental Quality
919 807 6312 office
michael.lec gett(a�ncdenr.gov
1617 Mail Service Center
Raleigh, NC 27699
NC 'Nothing Compares...,.
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
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