NC0067091_Fact Sheet_20220829

DENR/DWQ
EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT
NPDES Permit: NC0067091
2021 Renewal
This form must be completed by Permit Writers for all expedited permits which do not require full Fact Sheets.
Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks, etc.) that can be
administratively renewed with minor changes, but can include facilities with more complex issues (Special
Conditions, 303 (d) listed water, toxicity testing, instream monitoring, compliance concerns).
Facility and Stream Information
Applicant/Facility Name:
Aqua North Carolina, Inc. Mikkola Downs Subdivision WWTP
Applicant Address:
202 Mackenan Court; Cary, NC 27511
Facility Address:
2777 Stable Hill Trail; Kernersville, NC 27284
Facility Class/Permit Status:
Grade II Biological
WPCS / Renewal
Permitted Flow (as
built
0.072 MGD
Type of Waste
100% Domestic
Receiving Stream
East Belews Creek
Stream Class / ID
C / 22-27-8- 1
River Basin
Roanoke
Subbasin
03-02-01
HUC
030101030303
USGS Too
Belews Creek C18NE
7Q10 Sum Win cfs
0.8 1.17
30Q2 cfs
Avg. Stream Flow cfs
6
IWC % sum/win
12.24 8.71
County
Forsyth
Regional Office
WSRO
Basic Information for
Expedited Permit Renewal
Permit Writer / Date
Bradley Bennett / June 15, 2022
Does permit need daily max NH3 limits?
Yes - Already inpermit; See discussion
Does permit need TRC limits/language?
Yes - Already in permit
Does permit have toxicity testing?
No - accepted NH3-N in the past instead
Does permit have Special Conditions?
None other than electronic DMR language
Does permit have instream monitoring?
Yes - Temp and DO
Stream on 303 d List? For w arameter?
No - Mercury statewide issue only
Any compliance concerns?
None noted this permit cycle
Any modifications since lastpermit?
No
New expiration date:
I February 28, 2027
FACILITY OVERVIEW:
This facility is 100% domestic waste and treats a subdivision serving a population of 113 people. The facility
has a permitted and as built flow rate of 0.072 MGD. The treatment system includes the following wastewater
treatment components:
• Flow splitter box
• Bar screen
• Dual aeration tanks
• Dual blowers
• Dual clarifiers
• Sludge holding tank
The facility also holds collection system permit WQCSD0204.
• Sanuril chlorinator
• Chlorine contact tank
• Dechlorination
• Post aeration tank
• Effluent flow recorder

APPLICATION
The application does not indicate any changes in the facility or treatment since the last renewal of the permit.
The treatment system is operated by Aqua North Carolina, Inc. The annual average daily flow is indicated as
0.0074 MGD over the last two years, so the facility is operating at well below its designed and permitted
capacity.
INSPECTION
The most recent inspections (06/06/2019 & 10/24/2019) did not note any major issues with the facility. The
inspection found the facility in good condition and operated well. There were no compliance issues.
MONITORING DATA REVIEW:
Parameter Units
Min
A
g
Permit Limit
Comment
Flow (MGD)
0.00
0.027
0.008
0.072 MA
Flow well below permit limit
BOD (mg/L) Summer
< 2
36.2
3.3
30 MA
45 DM
No Exceedances
TSS (mg/L)
< 2.5
24
2.52
30 MA
45 DM
No Exceedances
Temp (C) - Effluent
2
31
15.4
-
Temp (C) - Upstream
-2
26
13
-
Temp (C) - Downstream
-1
26
13.1
-
NH3-N (mg/L) - Summer
0.1
3.5
0.26
6 MA 30 DM
No Exceedances
NH3-N (mg/L) - Winter
0.1
7.95
0.37
18 MA
35 DM
No Exceedances
DO (mg/L) - Effluent
5.5
14.6
9.3
-
DO (mg/L) - Upstream
6.9
18.2
10.4
-
DO (mg/L) - Downstream
6.9
18.6
10.4
-
Fecal Coliform (#/ml)
< 1
260
5.12
200 MA
400 DM
No Exceedances
TRC (µg/L)
4
46
11.5
28 DM
No values > compliance of 50
Total Nitrogen (mg/L)
2.86
38.3
21.38
-
Total Phosphorus (mg/L)
2.74
7.89
0.37
-
pH (su)
1 6.6
1 8.4
1 N/A
>-6 and <_9
I No Exceedances
MA -Monthly Average DM - Daily Max QA -Quarterly Average DA - Daily Average Summer - April through Oct Winter - Nov through March
The data reviewed for the renewal is from July 2017 through April 2022.
REVIEW OF PERMIT LIMITS:
Flow - The facility is operating on average at a little more than 10% of the flow allowed by the permit. None of
the 58 monthly average values was above 0.014MGD.
Ammonia Nitrogen Limits - There do not appear to be any issues with limit violations over the permit term.
The current permit requires monitor weekly for NH3-N and has summer effluent limits of 6 mg/L (monthly
average) and 30 mg/L (daily max) and winter limits of 18 mg/L and 35 mg/L. A recent review by Division staff
has noted that 15A NCAC 213.0404(c) requires that winter waste load allocations for oxygen consuming waste
be no less stringent than 2 times the summer waste load limit. To meet this rule requirement the winter
monthly average limit for NH3-N is being adjusted to 12 mg/L. The winter Daily Max limit remains at 35 mg/L
in the draft permit.
Mikkola Downs Subdivision WWTP Fact Sheet
NPDES Renewal 2022 - June 20, 2022
Page 2

While there could be some impacts with this change, based on the data reviewed from the previous permit cycle
it appears that the proposed change in limits can be regularly attained with the existing system. The maximum
winter value over the last permit was 24 mg/L which is below the daily max of 35 mg/L. No monthly average
(MA) values were more than 2.93 mg/L. This would indicate that a MA limit of 12 mg/L should not cause issues.
This is obviously an area of change that should be reviewed closely.
COMPLIANCE:
During the permit cycle this facility had no assessed violations (NOD, NOV) and no enforcement actions. In fact
there have been no assessed violations since 2008 and no enforcements since 2002.
FILE HISTORY REVIEW SUMMARY
Documents available indicate the permit has been in place since at least September 1986.
August 11, 1987 - Authorization to Construct (AtoC) for construction of a 0.049 MGD treatment system.
1997 Permit Renewal - This renewal indicates that in 1992 the facility requested NH3-N limits in leu of
toxicity requirements. Limits in the 1997 permit were set at
Flow (MGD)
BOD
m L
TSS
m L
NH3-N - S
m L
NH3-N - W
(mg/L)
Fecal per
100 mL
pH
0.072
30 45
30 45
6
18
200 400
6 to 9
The permit also included effluent monitoring for TRC, Temp, TN, TP and DO. Instream monitoring (U & D)
was required for pH, Temp, DO and fecal
• AtoC - 2000 - Facility made a request to convert from tablet to liquid feed chlorination but ultimately asked
to withdraw the request and the AtoC was returned.
• 2002 Permit Renewal - Upstream and Downstream monitoring for pH and fecal removed. The permit cover
letter noted high TRC values and the potential for a limit to be added to the permit.
• 2004 - Name change to current owner - Aqua North Carolina, Inc.
• 2007 Permit Renewal - Permit added daily max limits for NH3-N of 30 (s) and 35 (w); also added a limit of
28 µg/L for TRC and established an 18 month compliance schedule for implementation of the limit.
Application notes service to 39 homes and a population of around 120.
• May 1, 2008 - AtoC for construction of dichlorination facilities. Engineers Certification received October 14,
2008.
• 2012 Permit Renewal - Added TRC compliance footnote (50).
• 2017 Permit Renewal -Added eDMR language.
PROPOSED PERMIT CHANGES:
• Updated eDMR requirements to be consistent with final EPA rule.
• Added regulatory citations throughout permit as needed.
• Winter NH3-N limits modified in accordance with 213.0404(c) to assure winter limits no less stringent
than 2 times summer limits.
• The 2017 permit contained a Special Condition related to toxicity monitoring, but this monitoring was not
required. The special condition has been removed.
• Permit map information updated.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: June 28, 2022
Permit Scheduled Effective Date: October 1, 2022
Mikkola Downs Subdivision WWTP Fact Sheet
NPDES Renewal 2022 — June 20, 2022
Page 3

STATE CONTACT:
If you have questions concerning the above or the attached documents, please contact Bradley Bennett at
bradley.bennettOncdenr.gov. .
Mikkola Downs Subdivision WWTP Fact Sheet
NPDES Renewal 2022 — June 20, 2022
Page 4

Winston-Salem Journal
Advertising Affidavit
NCDEQ-DIVISION OF WATER RESOURCES
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
Account Number
4019534
P.O Box 3159
Date
Winston-Salem, NC 27102
July 13, 2022
PO Number Order Category Description
0000792712 Legal Notices Public Notice North Carolina Environmental Management Commission/ NPDES Uni
Publisher of the
Winston-Salem Journal
Before the undersigned, a Notary Public duly commissioned, qualified, and
authorized by law to administer oaths, personally appeared the Publisher's
Representative who by being duly sworn deposes and says: that he/she is
authorized to make this affidavit and sworn statement; that the notice or
other legal advertisement, a copy of which is attached hereto, was
published in the Winston-Salem Journal on the following dates:
07/13/2022
and that the said newspaper in which such notice, paper document, or legal
advertisement was published, was at the time of each and every such
publication, a newspaper meeting all the requirements and qualifications of
Section 1-597 of the General Statutes of North Carolina.
(signature p son making affidavit)
Sworn to and subscribed before me the 13th ay of July, 2022.
Kelly Ann Jo neon (Notary u ic)
State of Virginia NOTARY PUBLIC
County of Hanover Commonwealth of Virginia
Registration No. 8004299
My commission expires:MY 31, 2020
THIS IS NOT A BILL. PLEASE PAY FROM INVOICE. THANK YOU

Public Notice
North Carolina Environmental
Management Commission/
NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699.1617
Notice of Intent to Issue a NPDES
Wastewater Permit NCO083933
Salem Quarters WWTP and
NCO067091 Mikkola Downs Subdivi-
sion WWTP
The North Carolina Environmental
Management Commission proposes
to issue a NPDES wastewater dis-
charge permit to the person(s) listed
below. Written comments regarding
the proposed permit will be accept-
ed until 30 days after the publish
date of this notice. The Director of
the NC Division of Water Resources
(DWR) may hold a public hearing
should there be a significant degree
of public interest. Please mail com-
ments and/or information requests
to DWR at the above address. Inter-
ested persons may visit the DWR at
512 N. Salisbury Street, Raleigh, NC
to review information on file. Addi-
tional information on NPDES permits
and this notice may be found on our
website: http://deq.nc.gov/about/di
visions/water-resources/water-
resources-permits/wastewater-
branch/npdes-wastewater/public-
notices,or by calling [phone].
AQUA North Carolina, Inc [202
MacKenan Court; Cary, NC 275111
has requested renewal of NPDES
permit NCO083933 for the Salem
Quarters WWTP, located in Forsyth
County. This permitted facility dis-
charges 100% domestic wastewater
to a UT to Belews Creek, a class C;
water in the Roanoke River Basin.
Some of the parameters in the per-
mit are water quality limited. This
discharge may affect future alloca-
tions in this segment of Belews
Creek. AQUA North Carolina, Inc
[202 MacKenan Court; Cary, NC
27511] has requested renewal of
NPDES permit NCO067091 for the
Mikkola Downs Subdivision WWTP,
located in Forsyth County. This per-
mitted facility discharges 100% do-
mestic wastewater to East Belews
Creek, a class C; water in the Roa-
noke River Basin. Some of the pa-
rameters in the permit are water
quality limited. This discharge may
affect future allocations in this seg-
ment of the East Belews Creek.
WSJ: July 13, 2022.

Bennett, Bradley
From: Berger, Amanda A <[e-mail]>
Sent: Wednesday, July 20, 2022 1:57 PM
To: Bennett, Bradley
Cc: Pearce, Joseph R; Lambeth, Robyn E
Subject: RE: [EXTERNAL] RE: Draft NPDES Permits - Mikkola Downs (N0067091) and Salem
Quarters (NC0083933)
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Hi Bradley,
Apologies, I thought Joe responded, and I bet he thought I did. We have received.
Operations has reviewed, and we do not have any comments at this time.
Thanks,
Amanda
Amanda Berger
Director, Environmental Compliance
Aqua North Carolina
202 Mackenan Court; Cary, NC 27511
000
From: Bennett, Bradley <[e-mail]>
Sent: Wednesday, July 20, 2022 1:30 PM
To: Berger, Amanda A <[e-mail]>
Cc: Pearce, Joseph R <[e-mail]>; Lambeth, Robyn E <[e-mail]>
Subject: [EXTERNAL] RE: Draft NPDES Permits - Mikkola Downs (N0067091) and Salem Quarters (NC0083933)
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the
sender and know the content is safe.
Hey Guys,
Just wanted to check in and make sure that you had received this email last week and had the draft permits.

Bradley Bennett
Compliance and Expedited Permitting
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Phone: [phone]
Email: bradley.ben nett()ncdenr.gov
Email correspondence to and from this address may be subject to public records laws
From: Bennett, Bradley
Sent: Wednesday, July 13, 2022 9:15 AM
To: Berger, Amanda A <[e-mail]>
Cc: Pearce, Joseph R <[e-mail]>; Lambeth, Robyn E <[e-mail]>
Subject: Draft NPDES Permits - Mikkola Downs (N0067091) and Salem Quarters (NC0083933)
Hi Amanda,
Attached are the draft permits for two AQUA facilities — Mikkola Downs and Salem Quarters. These drafts will be
noticed later this week. If you have any questions, please feel free to contact me. The best way to get in touch is
through this email address. If needed we can set up a call.
Please respond to this email to verify that you received the draft permits and can open, download and print the files for
your records.
Thanks
m
Bradley Bennett
Compliance and Expedited Permitting
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Phone: [phone]
Email: bradley.ben nett()ncdenr.gov
Email correspondence to and from this address may be subject to public records laws

Bennett, Bradley
From: Graznak, Jenny
Sent: Wednesday, July 13, 2022 11:33 AM
To: Bennett, Bradley
Subject: RE: Draft Permits to Public Notice - Mikkola Downs (NC0067091) and Salem Quarters
(NC0083933)
Yes, I am so behind. Sorry! On my list!!!
Jenny Graznak
Assistant Regional Supervisor
Winston Salem Regional Office
Division of Water Resources
Department of Environmental Quality
450 West Hanes Mill Road, Suite 300
Winston Salem NC 27105
336-776-9695 office
336-403-7388 mobile
[e-mail]
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed
to third parties.
From: Bennett, Bradley <[e-mail]>
Sent: Wednesday, July 13, 2022 9:19 AM
To: Graznak, Jenny <[e-mail]>
Subject: Draft Permits to Public Notice - Mikkola Downs (NC0067091) and Salem Quarters (NC0083933)
Hey Jenny,
Just a heads up that these drafts are going to public notice this week. I sent the drafts and Fact Sheets earlier.
Bradley Bennett
Compliance and Expedited Permitting
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Phone: [phone]
Email: bradlev.bennett(@ncdenr.gov
Email correspondence to and from this address may be subject to public records laws
1

Bennett, Bradley
From: Bennett, Bradley
Sent: Friday, July 8, 2022 5:26 PM
To: Carpenter, Sydney
Subject: RE: Draft Permit for Review - Aqua NC Inc - Mikkola Downs Subdivision WWTP -
NC0067091
Thanks Sydney,
Of course, you know I throw in some of these mindless errors just to keep you on your toes! Okay, maybe not.
m
Bradley Bennett
Compliance and Expedited Permitting
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Phone: [phone]
Email: bradlev.bennett(@ncdenr.gov
Email correspondence to and from this address may be subject to public records laws
From: Carpenter, Sydney <[e-mail]>
Sent: Friday, July 8, 2022 4:32 PM
To: Bennett, Bradley <[e-mail]>
Subject: RE: Draft Permit for Review - Aqua NC Inc - Mikkola Downs Subdivision WWTP - NC0067091
Hi Bradley,
Everything looks good for this draft permit other than the fact that the draft cover letter has Welbille Heights' as the
facility name and not Mikkola Downs Subdivision WWTP. Great work!
Hope you have a wonderful weekend!
Sydney Carpenter (she/her)
Environmental Specialist I
Compliance and Expedited Permitting Unit
Division of Water Resources
N.C. Department of Environmental Quality
Office: 919-707-3712
sydney.carp enterRncdenr.gov
1617 Mail Service Center
Raleigh, NC 27699-1617
QE "
Email correspondence to and from this address is subject to the

North Carolina Public Records Law and may be disclosed to third parties.
From: Bennett, Bradley <bradley. ben [e-mail]>
Sent: Monday, June 20, 2022 4:26 PM
To: Carpenter, Sydney <[e-mail]>
Subject: Draft Permit for Review - Aqua NC Inc - Mikkola Downs Subdivision WWTP - NCO067091
Hey Sydney,
Hope you are doing well and didn't have any issues with the storm this past weekend.
I have a draft permit ready for your review when you have a chance. Take a look and let me know if you see any issues.
71 NCO067091 - Aqua - Mikkola Downs Subdivision WWTP
Thanks
L3_J
Bradley Bennett
Compliance and Expedited Permitting Phone: [phone]
NC Division of Water Resources
1617 Mail Service Center Email: bradley.ben nett()ncdenr.gov
Raleigh, NC 27699-1617
Email correspondence to and from this address may be subject to public records laws

Bennett, Bradley
From: Bennett, Bradley
Sent: Tuesday, June 21, 2022 4:16 PM
To: Graznak, Jenny
Subject: Draft Permit For Review - Aqua NC Inc - Mikkola Downs Subdivision - NCO067091
Attachments: NC0067091_Draft Permit and Cover Ltr_2022.pdf; NC0067091_Fact Sheet Binder_
2022.pdf
Hey Jenny,
Here is one of the drafts for Aqua that I mentioned a while back. Take a look and let me know if you have any
comments. The draft permit and Fact Sheet are attached and the application is in Laserfiche. I hope to send this one to
notice next week if possible. Please forward on to anyone there that should review.
Thanks
m
Bradley Bennett
Compliance and Expedited Permitting Phone: [phone]
NC Division of Water Resources
1617 Mail Service Center Email: bradley.ben nett&ncdenr.gov
Raleigh, NC 27699-1617
Email correspondence to and from this address may be subject to public records laws

Bennett, Bradley
From: Bennett, Bradley
Sent: Tuesday, May 31, 2022 11:26 AM
To: Graznak, Jenny
Subject: Aqua Renewals up for review next on my list
Hey Jenny,
Hope you are doing well. I just wanted to get in touch with you and let you know that the next permit renewals that I
will be working on are a group of Aqua Facilities that are all in the W-SRO. The list is below. If you guys have any input
on these as I'm getting started, please let me know. Forward these on to the right contacts in your region if others
might have comments or concerns with these. Here is the list:
Permit Owner Facility County
NCO067091
Aqua North Carolina, Inc.
Mikkola Downs Subdivision WWTP
Forsyth
NCO028746
Aqua North Carolina, Inc.
Briarwood Subdivision WWTP
Stokes
NCO078115
Aqua North Carolina, Inc.
Gre stone Subdivision WWTP
Forsyth
NCO083933
Aqua North Carolina, Inc.
Salem Quarters WWTP
Forsyth
Thanks
1*-1V
Bradley Bennett
Compliance and Expedited Permitting Phone: [phone]
NC Division of Water Resources
1617 Mail Service Center Email: bradley.ben nett()ncdenr.gov
Raleigh, NC 27699-1617
Email correspondence to and from this address may be subject to public records laws

NH3/TRC WLA Calculations
Facility: AQUA - Mikkola Downs Subdivision WWTP
Permit No. NCO067091
Prepared By: Bradley Bennett
Enter Design Flow (MGD): 0.072
Enter s7Q10 (cfs): 0.8
Enter w7Q10 (cfs): 1.17
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/1)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/1)
IWC (%)
Allowable Conc. (ug/1)
Fecal Coliform
Design Permitted
0.8
0.072
0.1116
17.0
0
12.24
139
Design Permitted
Monthly Average Limit: 200n00mi #VALUE!
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF) 8.17 € #VALUE!
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
<= Permitted Flow if Different from Design
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/1)
s7Q10(CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/1)
IWC (%)
Allowable Conc. (mg/1)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
w7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/1)
IWC (%)
Allowable Conc. (mg/1)
'2B .0404 (c) Applies
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/l, 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
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
Design
0.8
0.072
0.1116
1.0
0.22
12.24
6.6
Design
1.17
0.072
0.1116
1.8
0.22
8.71
18.4
Permitted
Permitted