WQ0040459_Application (FTSE)_20181009

State of North Carolina
Department of Environmental Quality
DWR 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: I/ 0 v q J (to be complelal by MR) � Q
All items must be completed or the api2lication will be returned S � /I
1. APPLICANT INFORMATION: 1J'
1. Applicant's name: City of Durham (company, municipality, HOA, utility, etc.)
2. Applicant type: ❑ individual ❑ Corporation ❑ General Partnership ❑ Privately -Owned Public Utility
❑ Federal ❑ State/County ® Municipal ❑ Other
3. Signature authority's name: Donald F. Greeley. PE. PLS per 15A NC'AC 02T .0106(h)
Title: Director of Water Management
4. Applicant's mailing address: 101 City Hall Plaza
City: Durham State: NC Zip: 27701-
5. Applicant's contact information:
! r
Phone number: (919) 5604381 Email Address: Don.Greeleyrm durhane.gav A U�Pr
II. PROJECT INFORMATION:
1. Project name: Southeast Regional Lift Station
2. Application/Project status: ® Proposed (New Permit) ❑ Existing Permit/Project
If a modification, provide the existing permit number: WQ00 and issued date:
If new construction but part of a master plan, provide the existing permit number: WQ00
3. County where project is located: Durham
4. Approximate Coordinates (Decimal Degrees): Latitude: 35.9707 , Longitude:-78.7709�
5. Parcel ID (if applicable): 221996
(or Parcel ID to closest downstream sewer)
111. CONSULTANT INFORMATION:
1. Professional Engineer: Brian Porter License Number: 033116
Firm: Hazen and Sawyer
Mailing; address: 4011 Westchase Blvd. Suite 300
City: Raleigh State: NC Zip: 27607-
Phone number: (9l9) 833-7152 Email Address: bporterr hazenandsawyer.com
IV. WASTEWATER TREATMENT FACILITY (W%N'TF) INFORMATION:
1. Facility Name: North Durham Water Reclamation Facility Permit Number: NCO023841
Owner Name: Civ of Durham
V. RECEIVING DOWNSTREAM SEWER INFORMATION (if different than WWTF):
I. Permit Number(s): WQN/A - Dischar ges to Treatment Facility Downstream (Receiving) Sewer Size: inch
Svstem Wide Collection Svstcm Permit Numbers) (il'applicable). WQCSov�
Owner Name(s):
FORM: FTA 04-16 Page 1 of 5

IF
THE COMPLETED APPLICATION PACKAGE INCLDING ALL SUPPORTING INFORMATION AND
MATERIALS, SHOULD BE SENT TO TILE 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_
Fayetteviile, 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 Mail
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
Aiamance, Allegheny, Ashe, Caswell, Davidson,
Water Quality Section_
Suite 300
Davie, Forsyth, Guilford, Rockingham, Randolph,
Winston-Salem, North Carolina 27105
Stokes, Surry, Watauga, Wilkes, Yadkin
[phone]
INSTRUCTION'S FOR FORM: FTA 04-16 & SUPPORTING DOCUMENTATION Page 3 of 3

VI. GENERAL REQUIRE0*1ENTS
1. Ifthe 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 O erational Agreement FORM: DEV been attached?
❑ Yes ❑No ®N.'A
3. If the Applicant is a HomclPro ierty Ouncrs' Association has an Operational A rreenient FOR�7: I-IOA been attached?
[--]Yes [-]No [EM-A
4. Origin of wastewater: (check all that apply):
® Residential Owned ® Retail (stores, centers, malls) ❑ Car Wash
® Residential Leased ® Retail with food preparationlservice ❑ Hotel and!or Motels
® School / preschool / day care ® Medical ! dental 1 veterinary facilities ® Swimming Pool iClubhouse
® Food and drink facilities ® Church ❑ Swimming PoolTilter Backwash
® Businesses / offices / factories ❑ Nursing Home ❑ Other (Explain in Attachment)
5. Nature of wastewater: 99 % Domestic/Commercial % Commercial
1 % Industrial (See 15A NCAC 02T A103(20))
I--- b,Is there a Pretreatment Program in effect? ❑ Yes ® No
G. Hasa flow reduction been approved under 15A NCAC 02T .01 14(f)? ❑ Yes ®No
i If ves, provide a_copy of flow' reduction approval letter
7. Summarize wastewater generated by project:
Establishment Type (see 011.01 la(f))
Daily Design Flow ° t'
No. or Units
Flow
gall
GAD
gall
GPD
gall
GPD
gall
GPD
gall
GPD
gall
GpD
Total
GPD
a See 15A NCAC 02T .01 14 h , d , c I ,and c ? for caveats to wastewater design flow rates (i.e., minimum flow per
dwelling; proposed unknown non-residential development uses; public access facilities located near high public use areas;
and residential property located south or east of the Atlantic Intracoastal Waterway to be used as vacation rentals as defined
in G.S. 42A-4).
b Per 15A NCAC 02T .0114(c), design flow rates for establishments not identified [in table 15A NCAC 02T.01141 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 15A NCAC 021" .0114)
1W Do not include future flows or previously permitted allocations
If permitted flow is zero, indicate «hy:
® 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 flo% expected
❑ Other (Explain):
FORM: FTA 04-16 Page 2 of 5

k
VII. GRAVITY SEVER DESIGN CRITERIA (If Applicable) - 02T .0305 & \1DC (Gra,.it%-_Se%vcrs):
1. Summarize gravity sewer to be permitted:
Size (inches)
Length (feet)
Material
Separate
Submittal
i Section 11 & 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 sevticr(s)
Oversizing lines to meet minimum slope requirement is not allowed and a violation of the RtDC
Vlll. PUMP STATION DESIGN CRITERIA (If Applicable) — 02T .0305 & NIDC(Pump Stations?Force Mains : pJ S
EACH PUMP STATION INCLUDED IN THIS PROJECT
COMPLETE FOR0f
1. Pump station number or name: Southeast Regional Lift Station
2. Approximate Coordinates (Decimal Degrees): Latitude: 35.9707 Longitude: •75.7709
3. Design now of the pump station: 10 millions gallons per day (firm capacity)
`4. Operational point(s) of the pump(s): 2315 gallons per minute at 47 feet total dynamic head (TDH) 1•
5. Summarize the force main to be permitted (for this Pump Station):
Size (inches) Length (feet) Material
Separate
Submittal
6. Power reliability in accordance with I5A NCAC 021 .0305(h)(L):
14L
® Standby power source or pump with automatic activation and telemetry - 15A NCAC 02T .0305(h)(1)(13)_
i Required for all pump stations with an mcrage 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 - 15A NCAC 02T
.0305(h)(1)(C)
or
❑ Portable pumping unit with plugged emergency pump connection and telemetry - 15A NCAC 02T .0305(h)(I)(C):
It shall he demonstrated to ttie Division that the portable source is owned or contracted by the applicant (draft agreement)
and is compatible with the 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.
FORM: FTA 04-16 Page 3 of 5

J
IX. SETBACKS & SEPARATIONS — (02B ,0200 & 15A NCAC 02T .0305(f)):
I. Does the project comply with all separations found in 15A NCAC 021' .0305(f) K (g) ® Yes ❑ No
15A NCAC 02T.0305(f) contains minimum separations that shall be Provided for sewers stems:
Setback Parameter*
Se aration 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-1 waters of Class I or
Class 11 im ounded 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 hei *ht
10 feet
Draina�c s stems and interceptor drains
5 feet
Any swimming pools
10 feet
Final earth grade (vertical)
36 inches
15A NCAC 02T_0305(0 contains alternatives where separations in 02T.0305(t) cannot be achieved.
**Stream classifications can be identified using the Division's NC .Surface Water Classifications wehraae
If noncompliance with 02T.0305(t) or (g), see Section X of this application
2. Does the project comply with separation requirements for wetlands? (50 feet of separation) ® Yes ❑ No ❑ N!A
See the Division's draft separation requirements for situations where separation cannot be meet
No variance is required if the alternative design criteria specified is utilized in design and construction
As built documents should reference the location of areas effected
3. Does the project comply with setbacks found in the river basin rules per ISA NCAC 02B .0200? ® Yes ❑ No ❑ WA
i This would include Trout Buffered Streams per 15A NCAC 213.0202
4. Does the project require coverage/authorization under a 404 Nationwide or ❑ Yes ® No
individual permits or 401 Water Quality Certi fications?
i 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 tnd
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 ❑ NIA
i Ifycs, include an attachment with details for each line, including type (aerial line, size, material, and location).
Fligh 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.
DORM: FTA 04-16
Page 4 of 5

N,
M
CERTIFICATIONS:
I. Does the submitted system comply with 1.i-A "]CACIQ 1. the Mtttjn1 1 1 Peso an rgenrm fin the Pcnumiit of I'um tiuin�nts
and i nrce ,tilain+ ([nest +crsioqh and the [jtA!y-ity Se%ker;1ltttinim De,ibu C ritergt JIMC t.% ersioiii as applicable'!
® Yes ❑ No
If No, complete and submit the Variance!Allernalive Design Request application (VADC 10-14) and supporting documents
for review. A i irovid of the request is rec uired prior to submittal of the Fast 'Truck Appliculinn and su t rnrtin
documents.
2. Professional Engineer's Certification;
1• __ iil*1 �, �trr _altrst that this npplicaEion-for-
Professional Engineer's name from Application Item 111.1.)
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 Server
Minimum Design Criteria for Gravity Sewers (latest version), and the hlinimuni Design Criteria for the East-'ri-ack
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 141-215.hA and 141-?19 6R, any persnn who knowingly make, 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. ' +1n1ri+hyry,
CA
North Carolina Professional Engineer's seal, signature, and date:
SEAL 7 7
3341B
�HGIN��Q-���,�
q",r+ Asti ��a �G�12l! B
3. Applicants Certification per 15A NC -AC 02T .0106(b):
_attest that this application for
(Signature Authority's name & title front Applicaatiun 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 docuntenlation and attachments are not included, this
application package is subject to being returned as incomplete. 1 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 141-215 613, 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 SIJ),000 as well as civil penalties up to $25,000 per violation.
Signature: �-�Y ^ Date:
FORM: FTA 04-16 Page 5 of 5

Hazen and Sawyer
4011 H
azenRaleigh.eNC 27607 (919) 33 7152500
NC Dept of Environmental Qua]
October 8, 2018
Ted Cashion
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Water Quality Regional Operations Section
512 N. Salisbury St., Suite 925
Raleigh, North Carolina 27604
Re: Southeast Regional Lift Station
Dear Mr. Cashion:
OCT o 9 tots
Rdelgh Regional Offic
Hazen and Sawyer is pleased to submit two (2) copies of the Pump Station application package
to request issuance of a Sewer Permit for the Southeast Regional Lift Station (SRLS) for the
City of Durham.
The new SRLS and its associated pipelines have been divided into separate contracts. The
SRLS contract has a longer construction duration and needs to be permitted prior to the
pipelines. The Southeast Regional Gravity Sewer, Force Main and Water Main contract
application will therefore be submitted under a separate submittal.
Pro'ect Description
The new SRLS will serve an area bounded by US 98, HWY 70, Sherron Rd and the Durham
County line. The area is currently served by five existing lift stations, which convey flow to the
North Durham Water Reclamation Facility (NDWRF) through the Lick Creek Pump Station
(LCPS) located in the adjacent Little Lick Creek Drainage Basin, or by pumping directly into the
LCPS force main. As part of this project, three (3) of these lift stations will be eliminated and
their basins will flow by gravity into the new SRLS. The remaining lift stations will stay in service
but will discharge into interceptors for conveyance to the SRLS. The City of Durham expects
significant development in the SRLS sewershed and the SRLS has been designed to convey
these additional flows as the development occurs.
The SRLS will convey flow through the SRLSFM to the LCPS effluent force main. Expected
flows for the SRLS are 10 mgd for Phase 1 and 23 mgd for Phase 2. The SRLSFM Ph. 1 will
convey flows to the LCPS effluent force main for the duration of Phase 1, Phase 2 of the project
includes the extension of the SRLS Force Main to the NDWRF. The Phase 2 SRLS force main
will be needed when total flows from the Lick Creek Pump Station and SRLS exceed
approximately 22 mgd. The Phase 2 FM will be interconnected with the LCPS FM allowing both
pump stations to utilize the new force main, providing system redundancy and flexibility and also
facilitating improvements/replacement of the existing LCPS FM.
hazenandsawyer.com

Hazen
The LCPS will be upgraded as part of this project but is deemed permitted because the firm
capacity of the pump station will remain this same (12 MGD). Hydraulic calculations for the
LCPS are included in this application.
Encroachments/Permits
Encroachments and permits in progress include the following:
• Sedimentation and Erosion Control
• NCDOT Driveway Permit
• City of Durham Site Plan Permit
Additional permits will be required for Southeast Regional Gravity Sewer, Force Main and Water
Main contract and will be submitted with their permit application.
Items Included in Application Package
The following list all the items included with this application package:
1) Check for $480
Two Copies of each of the following:
2) Cover Letter wlFigure
3) Sewer Permit Application
4) Design Calculations
a. Southeast Regional Lift Station Design Calculations:
i. Hydraulic Calculations — Gravity Flow into Wet Well
ii. Hydraulic Calculations — Influent Pumping
iii. Surge Analysis
iv. Odor Control
v. Buoyancy Calculations
5) Southeast Regional Lift Station Specifications
6) Southeast Regional Lift Station Drawings
The SRLS will be a regional lift station and is not part of any development that will increase
sewer flow. Therefore, the flow tracking/acceptance form is not included in the submittal as
there is no additional flow associated with the new pump station.
If you have any questions regarding this submittal, please don't hesitate to contact me at 919-
833-7152 or bporter(Whazenandsawyer.com.
Page 2 or3
hazenandsawyer.com

Hazen
Best Regards,
9 %/L
Brian Y. Porter, P.E.
Senior Associate
Hazen and Sawyer
Cc: James Harding, P.B., City of Durham
Chris Belk, P.E., Hazen and Sawyer
Page 3 of
hazenandsawyer.com

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Cashion, Ted
From: Porter, Brian <[e-mail]>
Sent: Friday, October 12, 2018 3:16 PNI
To: Cashion, Ted; Greeley, Don
Cc: Robinson, Jason; Belk, Christopher
Subject: [External] RE: City of Durham Southeast Regional Lift Station sewer extension application
Attachments: FTA 04-16 (Update).pdf
.: , . • . �xternat email. Do not click links or open attachments unless verified. Send all suspicious. email as an attachment
t
Ted,
I apologize for the confusion. Per our conversation earlier this week, attached is the FTA 04-16 form. We will mail you a
hardcopy as well. Please let me know if you need anything more. Thanks.
Brian
Brian Y. Porter, PE
Senior Associate I Hazen and Sawyer
4011 WestChase Blvd, Suite 500, Raleigh, NC 27607
919-863-1011 (direct) 1 540 250-1978 (cell)
bporter4hazenandsawver.com I hazenandsawyer.com
From: Cashion, Ted <[e-mail]>
Sent: Wednesday, October 10, 2018 10:19 AM
To: Porter, Brian <[e-mail]>; Greeley, Don <[e-mail]>
Cc: Robinson, Jason <[e-mail]>
Subject: City of Durham Southeast Regional Lift Station sewer extension application
External Email - think before you click
Hi Brian and Don,
We received the subject application October 9. The completed application (SSEA 04-16) we received is for a full
technical review of the project, and not a fast track permit application (FTA 04-16).
Is this project eligible for the fast track process? If so, we'll review the application and issue the permit from this office
(Raleigh Regional Office).
If the project is not eligible for the fast track process, and a thorough review of the project is required, the central office
will review the application and issue the permit.
Let us know how to proceed for this project. If it's fast track eligible, we'll need the FTA 04-16 and associated FTSE
form.
See reg below:
1SA NCAC 02T .0304 APPLICATION SUBMITTAL
(a) Application for permits pursuant to this Section shall be made on forms provided by the Division.
(b) Applications shall not be submitted unless the Permittee has assured downstream sewer capacity.
(c) For pressure sewers, vacuum sewers, STEP systems and other alternative sewer systems discharging into a sewer
system, the Permittee, by certifying the permit application and receiving an issued permit, agrees to be responsible for all
individual pumps, tanks, service laterals and main lines as permitted. The line from a building to the septic or pump tank

is excluded from this responsibility. This does not prohibit the Permittee from entering into a service agreement with
another entity. However, the Permittee shall be responsible for correcting any environmental or public health problems
with the system.
(d) For sewer extensions involving gravity sewers, pump stations and force mains or any combination thereof that do not
require an Environmental Assessment pursuant to 15A NCAC 01C .0408 (except for low pressure sewers, vacuum sewers
and STEP systems discharging to a sewer system), are not funded through the Division's Construction, Grants and Loans
Section, and where plans, calculations and specifications and other supporting documents have been sealed by a
professional engineer, application may be made according to the fast -track permitting process.
(e) Projects involving an Environmental Assessment per 15A NCAC 01C .0408 or are funded through the Division's
Construction, Grants and Loans Section must be submitted for a full technical review on application forms provided by the
Division. An application for sewers involving an Environmental Assessment shall not be considered complete until either
a Finding of No Significant Impact or Record of Decision is issued.
Thx
ted
Ted Cashion
Water Quality Regional Operations
Division of Water Resources
NC Department of Environmental Quality
Raleigh Regional Office
919-791-4254
'-,^Nothing Compares.
Email correspondence to and from this address may be subject to the North Carolina Public Records Low and may be
disclosed to third parties unless the content is exempt by statute or other regulation.

Cashion, Ted
From: Porter, Brian <[e-mail]>
Sent: Tuesday, November 27, 2018 11:08 AM
To: Cashion, Ted
Cc: Robinson, Jason; Greeley, Don; Belk, Christopher; Harding, Jim
Subject: [External] RE: Southeast Regional Lift Station fast track sewer extension application
Ted,
Please see my responses to your questions in red below. Please let me know if we need additional information. Thanks.
Brian
Brian Y. Porter, PE
Senior Associate I Hazen and Sawyer
4011 WestChase Blvd, Suite 500, Raleigh, NC 27607
919-863-1011 (direct) 1 540 250-1978 (cell)
bPprter@hazenandsaUw er.com I hazenandsawyer.com
From: Cashion, Ted <[e-mail]>
Sent: Monday, November 26, 201810:50 AM
To: Porter, Brian <bporter@haze nandsawyer.com>
Cc: Robinson, Jason <[e-mail]>; Greeley, Don <[e-mail]>
Subject: Southeast Regional Lift Station fast track sewer extension application
Hi Brian,
We are reviewing the subject application and have some questions.
Item Vill. of the application notes the design flow of the pump station is 10 mgd and the operational point of the
pump(s) is 2315 gpm.
1. It appears from the design calculations submitted that 3 pumps will be operational for a design flow of 6944
gpm. Please confirm this.
The design flow for the lift station is 10 mgd. We used the conversion of 694.4 gpm per mgd, which is how we
calculated 6944 gpm. When this is divided by 3, it results in 2314.67 gpm, which we rounded to 2315 gpm per
pump. Please let me know if you need a revised copy of the calculations with more significant digits for the design flow.
2. What are the total # of pumps that will be installed at the PS?
The pump station will have six total pumps. Two pumps will be low flow pumps that do not contribute to firm capacity
of the station. The four high flow pumps will provide the lift station's firm capacity (3 duty high flow pumps, 1 standby
high flow pump).
3. Is the 6944 gpm the design flow for the pump station with the largest pump out of service?
Yes, 6944 gpm is with three high flow pumps in service and one of the high flow pumps out of service.
Thanks for clarifying.
ted

Ted Cashion
Water Quality Regional Operations
Division of Water Resources
NC Department of Environmental Quality
Raleigh Regional Office
919-791-4254
`Nothing Compares
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties unless the content is exempt by statute or other regulation.

Cashion, Ted
From: Cashion, Ted
Sent: Monday, November 26, 2018 10:50 AM
To: '[e-mail]'
Cc: Robinson, Jason; Greeley, Don
Subject: Southeast Regional Lift Station fast track sewer extension application
Hi Brian,
We are reviewing the subject application and have some questions.
Item Vill. of the application notes the design flow of the pump station is 10 mgd and the operational point of the
pump(s) is 2315 gpm.
1. It appears from the design calculations submitted that 3 pumps will be operational for a design flow of 6944
gpm. Please confirm this.
2. What are the total # of pumps that will be installed at the P5?
3. Is the 6944 gpm the design flow for the pump station with the largest pump out of service?
Thanks for clarifying.
ted
Ted Cashion
Water Quality Regional Operations
Division of Water Resources
NC Department of Environmental Quality
Raleigh Regional Office
919-791-4254
--,'Nothing Compare -
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