WQ0029364_Application (FTSE)_20220627

eDICI<SON
June 21, 2022
NCDEQ Division of Water Resources
Winston-Salem Regional Office
450 W. Hanes Mill Road, Suite 300
Winston-Salem, NC 27105
NC Department of
Environmental Quality
;�. Received
JUN 2 7 2022
Winston-Salem
Regional Office
RE: Hertz Facility Demolition and Line of Sight Grading for Piedmont Triad Iinternational Airport
FTA 04-16 Fast Track Application for Approval -
Guildford County, North Carolina
WK Dickson # 202,00529.O0.RA
To Whom It May Concern:
Piedmont Triad International Airport (PTI) currently owns and operates the following assets associated with
permit number WQ0029364: 1,547 linear feet of 8-inch gravity sewer, an 80 gallon per minute (gpm) duplex
submersible pump station, and 75 linear feet of 4-inch force main.
As a modification to permit number WQ0029364, PTI plans to modify the existing pump station and replace
the existing force main. No new flow is being permitting as part of this modification.
The modification to the existing pump station will involve lowering the rim elevation. The existing pumps
will remain in service.
The new force main will be approximately 678 lineal feet of 4-inch pipe. It will discharge to a different
manhole within the same gravity sewer system further downstream than the one the existing force main
currently discharges into.
The modifications noted above will change the hydraulics of the system such that the operating point for the
existing pumps will move to the right on the pump curve and the pumping rate will increase from 80 gpm to
approximately 210 gpm. The attached calculations show that the existing wetwell has enough capacity to
maintain acceptable cycles in the wetwell at the new pumping rate once the float settings are adjusted.
1213 W. Morehead Street
Suite 300
Charlotte, NC 28208
Tel. [phone]
www.wkdickson.com Aviation • Water Resources • Community Development • Geomatics

Hertz Facility Demolition and Line of Sight Grading for Piedmont Triad International Airport
FTA 04-16 Fast Track Application for Approval
Page 2
On behalf of Piedmont Triad International Airport, we are submitting the following:
• Application Form FTA 04-16 (2 originals)
• Existing Permit WQ0029364 (2 copies)
• Calculations (2 copies)
• Site Maps (2 copies)
• Application Fee of $480.00
Please advise if there are any questions or concerns.
Sincerely,
W. K. Dickson & Co., Inc.
Ben Koski, P.E.
Project Manager
CC: Brigid Williams, P E — WK Dickson
J. Alex Rosser, P.E. - PTI

DNision of Water Resources
State of North Carolina
Department of Environmental Quality
Division of Water Resources
FAST TRACK SEWER SYSTEM EXTENSION APPLICATION
FTA 06-21 & SUPPORTING DOCUMENTATION
Application Number: (to be completed by DWR)
All items must be completed or the application will be returned
I. APPLICANT INFORMATION:
1. Applicant's name: Piedmont Triad Airport Authority (company, municipality, HOA, utility, etc.)
2. Applicant type: ❑ Individual ® Corporation ❑ General Partnership ❑ Privately -Owned Public Utility
❑ Federal ❑ State/County ❑ Municipal In Other
3. Signature authority's name: J. Alex Rosser, PE, per'15A NCAC 02T .0106(b)
Title: Chief Operating Officer
4. Applicant's mailing address: 1000 A Ted Johnson Parkway
City: Greensboro State: NC Zip: 27409-
5. Applicant's contact information:.
Phone number: ( 336 ) 665 - 5600 Email Address: rossera( gsoair.org
II. PROJECT INFORMATION:
1. Project name: Hertz Facility Demolition and Line of Sight Grading
2. Application/Project status: ❑ Proposed (New Permit) Z Existing Permit/Project
If a modification, provide the existing permit number: W000 and issued date:
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: W000
3. County where project is located: Guildford
4. Approximate Coordinates (Decimal Degrees): Latitude: 36.. 108602 ° Longitude: - 79 . 929996 °
5. Parcel ID (if applicable): (or Parcel ID to closest downstream sewer)
III. CONSULTANT INFORMATION:
1. Professional Engineer: Ben Koski, PE License Number: 045146
Finn: W.K. Dickson & Co., Inc.
Mailing address: 1213 W. Morehead St. Suite 300
City: Charlotte State: NC Zip: 28208 -
Phone number: ( 704 ) 227 - 3426 Email Address: bkoskiawkdickson.com
IV. WASTEWATER TREATMENT FACILITY (WWTF) INFORMATION:
1. Facility Name: TZ Osborne Permit Number: 0047384
Owner Name: City of Greensboro
V. RECEIVING DOWNSTREAM SEWER INFORMATION:
1. PermitNumber(s): WQ0029364
2. Downstream (Receiving) Sewer Information: 8 inch ® Gravity D Force Main
3. System Wide Collection System PermitNumber(s) (if applicable): WQCS00006
Owner Name(s): City of Greensboro
FORM: FTA 06-21
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 ZN/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 ®N/A
3. If the Applicant is a Home/Property Owners' Association, has an HOA/POA Operational Agreement (FORM: HOA) and
supplementary documentation as required by 15A NCAC 02T.0115(c) been attached?
❑ Yes '❑No ®N/A
4. Origin of wastewater: (check all that apply):
❑ Residential (Individually Owned)
❑ Residential (Leased)
❑ School / preschool / day care
❑ Food and drink facilities
® Businesses / offices / factories
❑ Retail (stores, centers, malls)
❑ Retail with food preparation/service
❑ Medical / dental / veterinary facilities
❑ Church
❑ Nursing Home
❑ Car Wash
❑ Hotel and/or Motels
❑ §wimming Pool/Clubhouse
❑ Swimming Pool/Filter Backwash
❑ Other (Explain in Attachment)
5. Nature of wastewater : %Domestic 100 % Commercial 0 % 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(f)? 0 Yes ❑ No J
> 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 a,b
No. of Units
Flow
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
Total
GPD
a See 15A NCAC 02T .0114(b), (d), (e)(1) and (e)(2) for caveats to wastewater des gn 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.0114] 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: W00029364 Issuance Date: Oct 3, 2005
❑ 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 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 requirements is not allowed and a violation of the MDC
VIII. PUMP STATION DESIGN CRITERIA (If Applicable) — 02T .0305 & MDC (Pump Stations/Force Mains):
PROVIDE A SEPARATE COPY OF THIS PAGE FOR EACH PUMP STATION INCLUIj)ED IN THIS PROJECT
1. Pump station number or name: PTI Pump Station Taxiway "E"
2. Approximate Coordinates (Diecimal Degrees): Latitude: 36.10782° Longitude: -79.932612°
3. Total number of pumps at the pump station: 2
3. Design flow of the pump station: 0.3024 millions gallons per day (firm capacity)
> This should reflect the total GPM for the pump station with the largest pump out of service.
4. Operational point(s) per pump(s): 210 gallons per minute (GPM) at 43.5 feet total dynamic head (TDH)
5. Summarize the force main to be permitted (for this Pump Station):
Size (inches).
Length (feet)
Material
4
678
PVC, DIP
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.1.b. ® Grinder Pump ❑ Mechanical Bar Screen ❑ Other (please specify)
6. Power reliability in accordance with 15A NCAC 02T .0305(h)(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)):
1. Does the project comply with all separations/alternatives found in 15A NCAC 02T .0305(0 & (g)?
15A NCAC 02T.0305(f) contains minimum separations that shall be provided for sewer systems:
ZYes ❑No
Setback Parameter*
Separation Required
Storm sewers and other utilities not listed below (vertical)
18 inches
2Water 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-I waters of Class I or
Class II impounded reservoirs used as a source of drinking water, and associated wetlands.
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 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 1
10 feet
Drainage systems and interceptor drains
5 feet
Any swimming pools
10 feet
Final, earth grade, (vertical)
36 inches
> If noncompliance. with 02T.0305(f) 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 webpage
2. Does this project comply with the minimum separation requirements for water mains? ® Yes ❑ No 0 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
D. 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:
If yes, does theproject comply with setbacks found in the river basin rules per 15A NCAC 02B .0200?
> This includes Trout Buffered Streams per 15A NCAC 2B.0202
® No
❑ Yes ❑ No
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.0105(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?" 0 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 projectsrequiring a single variance, complete and submit the Variance/Alternative 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 requiring two or more variances or where the variance is determined by the Division to be a
significant portion of the project, the full technical review is required.
2. Professional Engineer's Certification:
jft- cr- h tiL T1 D *wa-47r r-%
�jell) �0 . ( attest that this application for 4/i„49 tine of ,icy/ 6+0-4-pi,-' 6
(Professional Engineer's name from Application Item IIL 1.) (Project Namp. from Application Item II. I)
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 inaccordance 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. J
NOTE — In accordance with General Statutes 143-215.6A and 143-215.6B, any person who knowingly makes any false
statement, representation, ofcertification 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)
0.1-14/171
North Carolina Professional Engineer's seal, signature, and date:
3. Applicant's Certification per 15A NCAC 02T .0106(b):
I, a, attest that this applica
(Signature Authority Name from Application Item I.3.)
,
:�•FgSS/o'; x.r.
Q. SEAL
045146 •
{ -4z F..c;l'4 ol;}io•t
on for ONa lldke OC si % GuJt�0.
(Project Name from Application Item II.1) •1
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:
FORM: FTA 06-21
Date:
Page 5 of 5

MEMORANDUM
D �CKSON
community Infrastructure consultants
1213 W. Morehead Street, Suite 300 Charlotte, North Carolina 28208 704.334.5348 tel.
TO: Alex Rosser - Piedmont Triad International Airport
FROM: Ben Koski, PE
DATE: March 18, 2021
RE: PTI Pump Station Basis of Design Memo
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Ben Koski and Colleen Brophy from WK Dickson visited the PTI pump station site for a draw
down test on February lst, 2021 and met PTI operations personnel to assist. Additionally,
Darrell Gettys from Brittain Engineering, Inc. joined the site visit to evaluate the existing
electrical equipment and how the existing electrical service is routed to the pump station.
The evaluation of the electrical equipment from Brittain Engineering, Inc. deems the electrical
equipment as fair and can be reused for the project. The project site electrical service is served
off of the main service for either the Hertz or Samaritan's Purse buildings, which will be
demolished as part of this project. Therefore, the site will be served from a new electrical service
that will need to be coordinated with construction sequence of the project and electrical
equipment will need to be relocated.
There are two existing submersible pumps at the pump station, Flygt Model NP 3102
Adaptative MT 60 Hz, 465 impeller and Flygt Model NP 3102 MT 60 Hz, 465 impeller. What
was referred to in the field as Pump 1 is the older pump but was recently removed and leaned.
Pump 2 was recently replaced in August of 2020. The pump curve for Pump 1 can be seen in
Figure 1 and the pump curve for Pump 2 can be seen in Figure 2.
For all of the pump draw down tests there was no inflow into the wet well. Both pumps turned
on for the draw down tests, but Pump 2 did not reduce the total volume in the wet well. Pump
2 turned on and the water in the wet well could be seen to move around but the total water in
the wet well did not decrease. WK Dickson and the maintenance personnel did not know the
reason. WK Dickson thinks it could either be a clog or the pump is not seated properly. WK
Dickson recommends removing and cleaning the pump to see if there is a clog and seating the
pump back correctly. Once more information is known to why the pump was not performing,
WK Dickson can make a final recommendation on Pump 2.

Figure 1: Pump 1'Curve for Flygt Model NP-3102 MT
N 3102 MT 3 phase 4 poles 60hz US
32
28
24
20
16
12
100 200 300 400 500 600 700 800 900 [US g.p.ml
2

Figure 2: Pump 2 Curve for Flygt Model NP-3102 MT Adaptative
N 3102 MT 3 phase Adaptive 4 poles 6Ohz US
inl Head
60
56.
52:
48
44---
40--.
32 :
24---
20
16=
8-
4:.
0'
S
4
j
2m46.2.182runt
100 200
300 400 500 600 700 800 900 [U5 gp, e]
3

Pump 1 draw down test results are outline below in Table 1.
Table 1: Pump 1 Draw Down Results
Inflow to Wet Well
0 gpm
Initial Height of Water Line
27'-5"
Run Time of Test
52 Seconds ,
Final Height of Water Line
26'-11"
Diameter of Wet Well
6'
Calculated Volume
14.137 ft^3 =105.75 gallons
Total Flow
91.65 gallons per minute (gpm)
Based upon the conclusions of the site visit, WK Dickson recommends the following for the
pump station site. The electrical equipment on site can be reused and will have to be relocated
during the grading portion of the project. Additionally, the new electrical service will have to be
coordinated with the construction sequence. The lower portion of the existing wet well that
remains undisturbed during grading will be reused and reconfigured for the new finished
elevation by removing some of the riser sections and resetting the top. The existing valve vault,
force main, pump guide rails, and other appurtenances will be removed and replaced.
WK Dickson recommends that Pump 1 can be reused, and that Pump 2 should be removed,
cleaned, and the pump to be seated back correctly. If Pump 2 appears to be functioning normal
after this maintenance, WK Dickson recommends a second draw down test to verify the
pumping capacity and operational integrity of the pump in order to make a final determination
on whether or not it can be reused. If Pump 2 does not work after this maintenance, then WK
Dickson recommends additional investigation and a Xylem representative involvement for
additional assistance from the manufacturer.
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