NC0084409_Fact Sheet_20240603

DocuSign Envelope ID: 16C6CDD1-CF05-4D2F-819D-16F4C40AD40C
NCDEQ / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT RENEWAL
NPDES Permit NCO084409
Catherine Shadwell, Compliance & Expedited Permitting Unit / 919-707-3613 Jan 2024
FACILITY INFORMATION
Applicant/Facility Name
Aqua North Carolina, Inc. (Lauren Raup-Plummer)
Wellesley Place Subdivision WWTP
Applicant Address
202 MacKenan Court Cary, NC 27511
Facility Physical
Address/Mailing Address
Off West side of Laurel Creek Rd, Lewisville, NC 27023
Permitted Flow (MGD)
0.06 MGD
Type of Waste
100% Domestic, < 1 MGD
Facility Class
WW-2
County
Forsyth
Permit Status
Renewal
Regional Office
WSRO
STREAM CHARACTERISTICS
Receiving Stream
Mill Creek
Stream
Classification
WS-IV
Stream Segment
12-82
Outfall Lat.
360 07' 05.2" N
7Q10 - Summer (cfs)
0.21
Outfall Long.
800 25' 07.0" W
7Q10 - Winter (cfs)
0.31
Drainage basin
Yadkin -Pee Dee
30Q2 (cfs)
0.36
Subbasin
03-07-02
Average Flow (cfs)
1.17
HUC
030401011203
IWC (%)
30.69% (summer) /
23.08% (winter)
303(d) List
Not listed.
BASIC INFO FOR EXPEDITED PERMIT RENEWAL
Does permit need Daily Max NH3 limits?
Already present in permit
Does permit need TRC limits/footnote?
Already present in permit
Does permit have toxicity testing?
No
Does permit have any Special Conditions?
No, but needs one for High Rock Lake
Does permit have instream monitoring?
No
New expiration date:
December 31, 2028
Facility Summary
Wellesley Subdivision operates a private, closed collection system that sends 100% domestic wastewater to
its Wellesley Place Subdivision WWTP for its residents. In 2022, they received an authorization to
construct a rotary screen and sodium hydroxide feed system, this update will not increase the design or
permitted capacity. Wellesley has not yet installed this new system. The Wellesley Place Subdivision
WWTP is a minor facility (flow < 1 MGD) with a design capacity and permitted wastewater discharge of
0.06 MGD. The WWTP was originally permitted in 1995. This facility utilizes the following treatment
components:
• Inlet bar screen
• Equalization basin
• Dual pumps and blower
• Flow splitter box
• Dual aeration basins w/ fine bubble diffusers and blowers
• Dual -basin clarifier
• UV disinfection
• Chlorine contact chamber w/ dual tablet chlorinators and dichlorination equipment (backup)
Fact Sheet for Permit Renewal
Jan 2024 - NPDES Permit NCO084409 - Page 1

DocuSign Envelope ID: 16C6CDD1-CF05-4D2F-819D-16F4C40AD40C
• Aerated sludge holding tank
• Effluent flow meter with weir
Authorization to Construct allows the installation of the following treatment components:
• 0.78 MGD rotary screen
• 330-gallon HDPE storage tank with spill containment
• 0.017 GPM diaphragm chemical feed pump
Renewal Summary
This renewal contains the following changes:
• Updated Section A. (3.) to reflect current federal requirements for Electronic Reporting of
Discharge Monitoring Reports.
• Added Section A.(2.) Nutrient Reopener for High Rock Lake since this facility is upstream from
High Rock Lake.
• Updated outfall map
• Added new winter ammonia nitrogen limits to be in compliance with 2B .0404(c) - Winter Limits
can be no less stringent than 2 times the summer limits. New limits will go into effect January 1,
2028.
Compliance History
Looking through the last 5 years, Wellesley Place Subdivision WWTP has only received 1 NOD for a daily
max exceedance of BOD in 2019.
Comments on Draft Permit
Address of facility updated to be more accurate, per request from WSRO
Fact Sheet for Permit Renewal
Jan 2024 - NPDES Permit NCO084409 - Page 2

DocuSign Envelope ID: 16C6CDD1-CF05-4D2F-819D-16F4C40AD40C
IWC Calculations
Facility: Wellesley Place WWTP
Permit No.: NCO084409
Prepared By: Catherine Shadwell
Enter Design Flow (MGD): 0.06
Enter s7Q10 (cfs): 0.21
Enter w7Q10 (cfs): 0.31
0.2 <= Permitted Flow if Different from Design
Total Residual Chlorine (TRC)
Ammonia (Summer)
Daily Maximum Limit (ug/1)
Monthly Average Limit (mg NH3-N/1)
Design
Permitted
Design
Permitted
s7Q10 (CFS)
0.21
0.21
s7Q10 (CFS)
0.21
0.21
DESIGN FLOW (MGD)
0.06
0.2
DESIGN FLOW (MGD)
0.06
0.2
DESIGN FLOW (CFS)
0.093
0.31
DESIGN FLOW (CFS)
0.093
0.31
STREAM STD (UG/L)
17.0
17
STREAM STD (MG/L)
1.0
1
Upstream Bkgd (ug/1)
0
0
Upstream Bkgd (mg/1)
0.22
0.22
IWC (%)
30.69
59.62
IWC (%)
30.69
59.615385
Allowable Conc. (ug/1)
55
29
Allowable Conc. (mg/1)
2.8
1.5
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
Design
Permitted
Design
Permitted
Fecal Coliform
w7Q10 (CFS)
0.31
0.31
Monthly Average Limit:
200/100ml
200/100ml
DESIGN FLOW (MGD)
0.06
0.2
(If DF >331; Monitor)
DESIGN FLOW (CFS)
0.093
0.31
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
1.8
Dilution Factor (DF)
3.26
1.68
Upstream Bkgd (mg/1)
0.22
0.22
IWC (%)
23.08
50.00
Allowable Conc. (mg/1)
7.1
3.4
*213 .0404 (c) Applies
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals)
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis)
If the allowable ammonia concentration is > 35 mg/L, no limit shall be imposed
* By Policy dischargers < 1 MGD get limits no lower than 2 & 4 due to BAT
* From 2B .0404(c) - Winter Limits can be no less stringent than 2 times the summer limits
Feral (.nlifnrm
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)

DocuSign Envelope ID: 16C6CDD1-CF05-4D2F-819D-16F4C40AD40C
�'our~ier Publisher's Affidavit Of Publication
STATE OF NORTH CAROLINA
No 1767544
PUBLIC N071CIi
FO R S YTH COUNTY
North Carolina Environmental
Management Connnissioo/NPDES Unit
I617 Mail Set -vice Center
Before the undersigned, a Notary Public of said county and
Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDF,S
state, duly commissioned, qualified, and authorized by law
Wastewater Permit NCW84409
to administer oaths, personally appeared MARK A. BEE,
Welleslef Place WYVTP
The North Carolina Environmental
who being first duly sworn, deposes and says that he is
Management Commission proposes to
GENERAL MANAGER of THE CLEMMONS COURIER. p ub-
a wastewater
wastewater discharge
r"nrre o
mit to the
pthe listed below.
lished, issued and entered as second class mail in the vil-
Written Comment, regarding the pro-
of Clemmons, in Forsyth County, North Carolina, that
posedlage lter' permit will
of
he is authorized to make this affidavit and sworn statement,
datc histlno-
lice. The Director of the NC Division
that the notice or other legal advertisement is a true copy
of Water Resources (DWR) may hold
of which was attached hereto, was in THE CLEM-
a public hearing should there be a sig-
published
nificant degree of public interest. Please
MONS COURIER, on the following dates:
«tail comments and/or information
requests to DWR at the above address.
01/18/24
Interested persons may visit the DWR
at 512 N. Salisbury Street, Raleigh, NC
276(A to review the information on
Zile. Additional information on NPDFS
permits and this notice may be found
and that the said newspaper in which such notice, paper
on our webs(te: lttps,11dry,nc.eus_lpnb-
document or legal advertisement was published at the time
g p
3 ' �' `-� I'>• calling, 19)
,07-1601. Aqua North Carolina, Inc.
Inc.
of each and every such publication, a newspaper meeting
1202 MacTecnan Court Cary, NC 275111
all ;he requirerients and qualifications of Section 1-597 of
has applied for renewal of the NPD1iS
the General Statutes of North Carolina. and was a qualified
permit NC0084409 for Wellesley Place
Subdivision WWTP in Forsyth County.
newspaper within the meaning of Section 1-597 of the Gen-
lhis permitted facility discharges treat
eral Statutes of North Carolina,
ed wastcwatcr to the Mill Creek in the
Yadkin -Pee Dee River Basin. Current-
ly ammonia nitrogen and total residual
chlorite are water quality limited. This
discharge may affect future aliucations
at a cost of $39.37
in this portion of the Yadkin -Pee Dec
Account #: 23483
River Bain.
Re:
PUBLISH: CLEMMONS COURIER
jANCARY• 19, 2024.
Purchase Order#:
�Ck_a`a.
(signature of person making affidavit)
Sworn and subscribed before me this
18th Day of January, 2024
Notary Public
My commission expires May 2, 2026.
PAIDrIN �l1LL,..

DocuSign Envelope ID: 16C6CDD1-CF05-4D2F-819D-16F4C40AD40C
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
MEMORANDUM
NORTH CAROLINA
Environmental Quality
January 3, 2024
To: Ben Kirby and Daniel Fox
NC DEQ / DWR / Public Water Supply
Winston Salem Regional Office
From: Catherine Shadwell
NPDES Unit
Subject: Review of Draft NPDES Permit NCO084409
Wellesley Place Subdivision WWTP
Forsyth County
Please indicate below your agency's position or viewpoint on the draft permit and return this
form by February 3, 2024. if you have any questions on the draft permit, please contact me
at 919-707-3613 or via e-mail [[e-mail]].
RESPONSE: (Check one)
Concur with the issuance of this permit provided the facility is operated and maintained
properly, the stated effluent limits are met prior to discharge, and the discharge does not
contravene the designated water quality standards.
1-1
Concurs with issuance of the above permit, provided the following conditions are met:
❑ Opposes the issuance of the above permit, based on reasons stated below, or attached:
Signed AL Date: l/SI-Z-y
North Carolina Depaitinent of Enviromnental Quality Division of Water Resources
512 No th Salisbury Street 1617 Mail Service Center Raleigh, North Carolina 27699-1617 t
919.707.9000 jji—
U p9 .nt of Enrfranmental UuaN�