WQ0039913_Application (FTSE)_20221208

State of North Carolina
Department of Environmental Quality
DWR Division of Water Resources
FAST TRACK SEWER SYSTEM EXTENSION APPLICATION
Division of Water Resources FTA 06-21 & SUPPORTING DOCUMENTATION
Application Number: A OUS (to be completed by DWR)
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All items must be completed or the application will be returned
1. APPLICANT INFORMATION:
1. Applicant's name: Durham County (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: Stephanie Brixey per 15A NCAC 02T .0106(b)
Title: POTW Director
4. Applicant's mailing address: 5926 NC Hwy 55 E NC Dept of Environmental Quality
City: Durham State: NC Zip: 27713 DEC 8 �z�
5. Applicant's contact information:
Phone number: [phone] Email Address: sbrixevOdconc. og_v
Raleigh Regional Office
II. PROJECT INFORMATION:
1. Project name: Stirrup Iron Creek Lift Station Capacity Improvements
2. Application/Project status: ❑ Proposed (New Permit) ® Existing Permit/Project
If a modification, provide the existing permit number: WQ0039913 and issued date: April 12, 2018.
For modifications, also attach a detailed narrative description as described in Item G of the checklist.
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: 35.882379 Longitude:-78.833938
5. Parcel ID (if applicable): (or Parcel ID to closest downstream sewer)
III. CONSULTANT INFORMATION:
1. Professional Engineer: Zachary G. Purvis License Number: 0033186
Firm: Kimley-Horn
Mailing address: 300 Morris Street, Suite 200
City: Durham State: NC Zip: 27701-2127
Phone number: [phone] Email Address: [e-mail]
IV. WASTEWATER TREATMENT FACILITY (WWTF) INFORMATION:
1. Facility Name: Triangle Wastewater Treatment Plant Permit Number: NCO026051
Owner Name: Durham County
V. RECEIVING DOWNSTREAM SEWER INFORMATION:
1. Permit Number(s): WQBuilt 1973
2. Downstream (Receiving) Sewer information: 18 inch L.J Gravity ® Force Main
3. System Wide Collection System Permit Number(s) (if applicable): WQCS00038
Owner Name(s): Durham County
FORM: FTA 06-21 Pagel of 5

Vl. 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 A5=reement (FORM: DEV i been attached?
[--]Yes ❑ No ®N:'A
3. If the Applicant is a Home. -Property Owners' Association, has an HOA POA Operational Agreement FORM:. HOAI and
supplementary documentation as required by 15A NCAC 02T.0115(c) been attached?
El Yes El No ®NA
4. Origin of wastewater: (check all that apply):
® Residential (Individually Owned) ® Retail (stores, centers, malls) ® Car Wash
® Residential (Leased) ® Retail with food preparation. -service ® Hotel and/or Motels
® School.` preschool? day care ® Medical! dental:: veterinary facilities ❑ Swimming Pool/clubhouse
® Food and drink facilities ® Church ❑ Swimming Pool.'Filter Backwash
® Businesses.' offices factories ® Nursing Home ❑ Other (Explain in Attachment)
5. Nature of wastewater: NIA % Domestic N/A % Commercial N/A % Industrial (See 15A NCAC 02T .0103(20))
If Industrial, is there a Pretreatment Program in effect? ❑ Yes❑ No
6. Has a flow reduction been approved under 15A NCAC 02T .0114 ? ❑ Yes ® No
➢ If yes, provide a copy of flow reduction approval letter with this application
7. Summarize wastewater generated by project:
Establishment Type (see 02T.0114(f))
Daily Design Flow',e
No. of Units
Flow
gall
GPD
gal.'
GPD
gal+
GPD
gal/
GPD
gal
GPD
gale
GPD
Total
GPD
a See 15A NCAC 02T .01 14 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 15A NCAC 02T .01 14(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 02T .0114)
➢ Do not include future flows or previously permitted allocations
If permitted flow is zero, please indicate why:
❑ Pump Station/Force Main or Gravity Sewer where flow will be permitted in subsequent permits that connect to this line.
Please provide supplementary information indicating the approximate timeframe for permitting upstream sewers with flow.
® Flow has already been allocated in Permit Number: W00039913 Issuance Date: April 12, 2018
❑ Rehabilitation or replacement of existing sewers with no new flow expected
❑ Other (Explain):
FORM: FTA 06-21 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 1I & 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 requirements is not allowed and a violation of the MDC
VII1. PUMP STATION DESIGN CRITERIA (If Applicable) — 02T .0305 & MDC (Pump Stations/Force Mains):
PROVIDE A SEPARATE COPY OF THIS PAGE FOR EACH PUMP STATION INCLUDED IN THIS PROJECT
1. Pump station number or name: Stirrup Iron Creek Lift Station
2. Approximate Coordinates (Decimal Degrees): Latitude: 35.882379 Longitude:-78.833938
3. Total number of pumps at the pump station: 3
3. Design flow of the pump station: 7.49 millions gallons per day (firm capacity)
➢ This should reflect the total GPM for the pump station with the largest pump out of service. tat
4. Operational point(s) per pump(s): 3,500 gallons per minute (GPM) at 150 feet total dynamic head (TDH) t of Environmen
n1C DeP
5. Summarize the force main to be permitted (for this Pump Station):
Size (inches) Length (feet) Material
of - g 2021
Kaleigh Re�tanal a
If any portion of the force main is less than 4-inches in diameter, please identify the method of solids reduction per
MDCPSFM Section 2.01C. Lb. ❑ Grinder Pump ❑ Mechanical Bar Screen ❑ Other (please specify)
6. Power reliability in accordance with 15A NCAC 02T .0305ih){1}:
® Standby power source or ❑ Standby pump
➢ Must have automatic activation and telemetry - 15A NCAC 02T.0305(h)(1)(B);
➢ 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 and may not be portable
Or if the pump station has an average daily flow less than 15,000 gallons per day 15A NCACO2T.0305(h)(1)(C):
❑ Portable power source with manual activation, quick -connection receptacle and telemetry -
or
❑ Portable pumping unit with plugged emergency pump connection and telemetry:
➢ Include documentation that the portable source is owned or contracted by the applicant 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
as part of this permit application in the case of a multiple station power outage.
FORM: FTA 06-21 Page 3 of 5

IX. SETBACKS & SEPARATIONS — (02B .0200 & 15A NCAC 02T .0305(f)):
L Does the project comply with all separations/alternatives found in 15A NCAC 02T .0305(f) & (gY? ® Yes ❑ No
15A NCAC 02T.0305(f) contains minimum separations that shall be provided for sewer systems:
Setback Parameter*
Separation Required
Storm sewers and other utilities not listed below (vertical)
18 inches
'Water mains (vertical - water over sewer preferred, 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 impounded reservoirs used as a source of drinking water, and associated wetlands.
100 feet
**Waters classified WS (except WS-1 or WS-V), B, SA, ORW, HQW, or SB from normal
high water (or tide elevation) and wetlands associated with these waters (see item IX.2)
50 feet
**Any other stream, lake, impoundment, or ground water lowering and surface drainage
ditches, as well as wetlands associated with these waters or classified as WL.
10 feet
Any building foundation (horizontal)
5 feet
Any basement (horizontal)
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)
j 36 inches
➢ If noncompliance with 02T.0305(,) or (g}, see Section X.1 of this application
*15A NCAC 02T.0305(g) contains alternatives where separations in 02T.0305(f) cannot be achieved. Please check "yes"
above if these alternatives are used and provide narrative information to explain.
**Stream classifications can be identified using the Division's NC Surface Water Classifications webpUc
2. Does this project comply with the minimum separation requirements for water mains? ❑ Yes ❑ No ® N/A
➢ If no, please refer to 15A NCAC 18C.0906(f) for documentation requirements and submit a separate document,
signed/sealed by an NC licensed PE, verifying the criteria outlined in that Rule.
3. Does the project comply with separation requirements for wetlands? ❑ Yes ❑ No ® N.-A
➢ Please provide supplementary information identifying the areas of non-conformance.
➢ See the Division's draft separation requirements for situations where separation cannot be met.
➢ No variance is required if the alternative design criteria specified is utilized in design and construction.
4. Is the project located in a river basin subject to any State buffer rules? ❑ Yes Basin name: ® No
If yes, does the project comply with setbacks found in the river basin rules per 15A NCAC 02B .0200? ❑ Yes ❑ No
➢ This includes Trout Buffered Streams per 15A NCA(.' :'B 0:'0'
5. Does the project require coverage/authorization under a 404 Nationwide/individual permits ❑ Yes ® No
or 401 Water Quality Certifications?
➢ Please provide the permit number/permitting status in the cover letter if coverage/authorization is required.
6. Does project comply with .15A NCAC 02T.0105(c)(6) (additional permits/certifications)? ❑ Yes ® No
Per 15A NCAC 02T.0 I 05(c)(6), directly related environmental permits or certification applications must be 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.).
7. Does this project include any sewer collection lines that are deemed "high -priority?" ❑ Yes ® No
Per 15A NCAC 02T.0402, "high -priority sewer" means any aerial sewer, sewer contacting surface waters,
siphon, or sewers positioned parallel to streambanks that are subject to erosion that undermines or deteriorates the sewer.
Siphons and sewers suspended through interference/conflict boxes require a variance approval.
➢ 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 permittee's individual System -Wide Collection permit.
FORM: FTA 06-21 Page 4 of 5

X. CERTIFICATIONS:
1. Does the submitted system comply with 15A 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, for projects requiring a single variance, complete and submit the Variance'Altemative Design Request application
(VADC 10-14) and supporting documents for review to the Central Office. Approval of the request will be issued
concurrently with the approval of the permit, and projects requiring a variance approval may be subject to longer
review times. For projects reguiringt two or more variances or where the variance is determined by the Division to be a
si niticant portion of the pro6ect, the full technical review is required.
2. Professional Engineer's Certification:
1, Zachary G. Purvis, attest that this application for Stirrup Iron Creek Lift Station Capacity Improvements
(Professional Engineer's name from Application Item 111.1.) (Project Name from Application Item 11.1)
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,
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. Misrepresentation of the application
information, including failure to disclose any design non-compliance with the applicable Rules and design criteria, may subject
the North Carolina -licensed Professional Engineer to referral to the licensing board. (21 NCAC 56.0701)
North Carolina Professional Engineer's seal, signature, and date:
33186
'•.41 11� �: •J�
'61 0 1
Applicant's Certification per 15A NCAC 02T .0106(b):
1, Stephanie Brixey, POTW Director_, attest that this application for Stirrup Iron Creek Lift Station Capacity Im rovements
(Signature Authority Name from Application Item 1.3.) (Project Name from Application Item ILI)
attest that this application 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.
Signature: Date: _ a f aA a.i
FORM: FTA 06-21 Page 5 of 5

irrcnf
-apo tcd
State of North Carolina
Department of Environmental Quality
DWK Division of Water Resources
Dlvlslon of Water Resources Flow Tracking for Sewer Extension Applications
(FTSE 10-18)
Entity Requesting Allocation: Durham County
Project Name for which flow is being requested: Stirrup Iron Creek LS Capacity Impvts
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 #: NCO026051
All flows are in MGD
c. WWTP facility's permitted flow 12
d. Estimated obligated flow not yet tributary to the WWTP 1.831
e. WWTP facility's actual avg. flow 4.227
f. Total flow for this specific request 0.000
g. Total actual and obligated flows to the facility 6.058
h. Percent of permitted flow used 50.5
11. 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
Average Approx. Obligated, Total
Pump Pump Daily Current Not Yet Current Flow
Station Station Firm Flow** Avg. Daily Tributary Plus
(Name or Permit Capacity, * (Firm / pl), Flow, Daily Flow, Obligated Available
Number) No. MGD MGD MGD MGD Flow Capacity***
Stirruplron 6.50 2.60 2.416 0.158 2.574 0.026
StirrupIron 7.50 3.00 2.416 0.158 2.574 0.426
* The Firm Capacity (design flow) 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
(pf) not less than 2.5, per Section 2.02(A)(4)(c) of the Minimum Design Criteria.
*** 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 10-18

III. Certification Statement:
1 c, W certify to the best of my knowledge that the addition of
the volume bf wastewater to bd permitted 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 certifies that the receiving collection system or treatment
works has adequate capacity to transport and treat the proposed new wastewater.
Signing Ovcia1 Signature
Title of
I a.j a. I .2Da
Date
Page 2 of 6
FTS E 10-18

Kimley»)Horn
November 30, 2021
North Carolina Department of Environmental Quality
Raleigh Regional Office
Water Quality Section
3800 Barrett Drive
Raleigh, North Carolina 27609
RE: Durham County
Stirrup Iron Creek Lift Station Capacity Improvements
Fast Track Sewer System Extension Application
To Whom It May Concern_
NC Dept of F,nvironmental QualitN
DEC - 8 2021
Raleigh Regional Office
On behalf of Durham County Engineering and Environmental Services, and in accordance with 15A
NCAC subchapter 02T and the Division of Water Resources Minimum Design Criteria, we submit
herewith the relevant documentation to proposed modifications to the Stirrup Iron Creek Lift Station
for your review and approval. Please find enclosed:
• Fast Track Sewer System Extension Application
• Flow Tracking/Acceptance Form
• Existing Permit No_ WQ0039913
• Figure 1 —Aerial and Contour Map
• A $480.00 check for the standard processing fee
Durham County is requesting authorization to modify the existing attributes to Stirrup Iron Creek Lift
Station to reflect the following:
Increase firm capacity and acceptable flow to 7.5 MGD. The current firm capacity in the
existing permit is 6.5 MGD, but due to recent force main and pump testing the output has
been determined to be higher than anticipated. This permit revision is intended to account for
this variance in station output. Durham County requests authorization to increase the firm
capacity to accept additional flow.
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,
Zachary G_ Purvis, P.E_
Project Manager

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Kimley>»Horn
Transmittal
Date: December 8, 2021
Project Name: Stirrup Iron Creek Lift Station Improvements
To- Jason Robinson - NCDEQ
3800 Barrett Drive
Raleioh. North Carolina 27609
We are sending these by
❑ U S Mai
❑ Other
❑ FedEx
300 Morris St
Suite 200
Durham, North Carolina 27701
NC Dept o' � T7Aftal Quality
[)EC — 8 2021
4_XCIRIQUaL Vince
Telephone No. 919-791-4200
® Hand Delivery
We are sending you
® Attached ❑ under separate cover via the following items
❑ Shop drawings ❑ PrintstPlans ❑ Samples ❑ Specifications ❑ Change Orders
® other Permit Appl cation and Supporting Materials
Conies Date No. Descrintion
1
11/30/2021
1
Narrative Letter
2
12/3/2021
2
Fast Track Sewer System Extension Application
2
12/2/2021
3
Flow Tracking/Acceptance Form
1
4/12/2018
4
Existing Permit No. WQ0039913
1
11/30/2021
5
Fi ure 1 —Aerial and Contour Ma
1
6
A $480.00 check for standard processing tee
These are transmitted as checked below.
❑ For your use ❑ Approved as submitted ❑ Resubmit ® Copies for approval
❑ As requested ❑ Approved as noted ❑ Submit ❑ Copies for distribution
❑ For review and comment ❑ Returned for corrections ❑ Return ❑ Corrected prints
Copy to:
Signed: