HomeMy WebLinkAboutNC0083933_Fact Sheet_20220829DENR/DWQ
EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT
NPDES Permit: NCO083933
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. Salem Quarters WWTP
Applicant Address:
202 Mackenan Court; Cary, NC 27511
Facility Address:
9999 Ran ecrest Road, Winston-Salem, NC 27106
Facility Class/Permit Status:
Grade I1 Biological
WPCS / Renewal
Permitted Flow (as
built
0.06 MGD
Type of Waste
100% Domestic
Receiving Stream
UT Belews Creek
Stream Class / ID
C / 22-27- 2
River Basin
Roanoke
Subbasin
03-02-01
HUC
030101030303
Quad USGS Too
C18NE Belews Creek
7Q10 Sum Win cfs
0.1 0.31
30Q2 cfs
Avg. Stream Flow cfs
1.55
IWC % sum/win
48
County
Forsyth
Regional Office
WSRO
Basic Information for
Expedited Permit Renewal
Permit Writer / Date
Bradley Bennett / July 6, 2022
Does permit need daily max NH3 limits?
No - Has monitoring and limits already
Does permit need TRC limits/language?
Yes - Already in permit
Does permit have toxicity testing?
No
Does permit have Special Conditions?
No
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?
No Enforcements or violations this permit term
Any modifications since lastpermit?
None in app but inspection noted 2019 changes
New expiration date:
February 28, 2027
FACILITY OVERVIEW:
This facility is 100% domestic waste and treats a subdivision serving a population of 443 people in 177 homes.
The facility has a permitted and as built flow rate of 0.06 MGD. The treatment system includes the following
wastewater treatment components:
• Bar screen
• Flow Splitter Box
• Equalization basin
• Dual aeration basins
• Dual clarifiers
• Dual sand filters
• Caustic Feed System (see discussion under
Inspection)
• Ultraviolet disinfection system
• Back-up chlorinator, contact basin
• Dechlorinator
• Sludge holding tank
• Stand-by power
The facility also holds collection system permit WQCSD0205. The last inspection under the collection system
permit was May 9, 2022, and there were no violations.
APPLICATION
The application does not indicate any changes in the facility or treatment since the last renewal of the permit
(see inspection discussion below). The treatment system is operated by Aqua North Carolina, Inc. The annual
average daily flow is indicated as 0.027 MGD over the permit cylce, so the facility is operating at well below its
designed and permitted capacity. See discussion under Inspection about treatment system components that
may have been added to the facility.
INSPECTION
The most recent inspection occurred in October 24, 2019. This inspection noted that the WWTP was well
operated and maintained. There were no violations found during the inspection process. The inspection report
does note that blower motors and a blower were installed in September 2019. These could be mainly
maintenance type of activities. The inspection report also notes that in October 2019 the facility added a caustic
feed system for pH treatment. There is no indication of an Authorization to Construct (ATC) for this addition.
Division ATC staff (Min Xiao) was consulted on this issue and will check into this issue and assess the need for
an ATC or Engineering Certification for the work. ATC staff have been given information on this issue for their
review (email attached). Since the caustic feed system is in place and confirmed by the regional office staff it
will be added to the draft permit.
MONITORING DATA REVIEW:
Parameter Units
Min
Max
Avg
Permit Limit
Comments
Flow (MGD)
0.006
0.092
0.027
0.06 MA
Flow well below permit limit
BOD (mg/L)
< 2
37.1
2.4
30 MA
45 DM
No Exceedances
TSS (mg/L)
< 2.5
25
4.56
30 MA
45 DM
No Exceedances
Temp (C) - Upstream
-2
24
13.7
-
Temp (C) - Effluent
6
29
18.23
-
Temp (C) - Downstream
-1
25
13.87
-
NHa-N (mg/L) Summer
< 0.2
4.78
0.32
2 MA 10 DM
No Exceedances
NH3-N (mg/L) - Winter
< 0.2
4.73
0.30
7.1 MA
35 DM
No Exceedances but - Per2B.0404 winter
limits will be lowered to stay <2 times Summer
DO (mg/L) - Upstream
6.9
17.5
10.2
-
DO (mg/L) - Effluent
5.8
13.7
8.6
>5 DA
No values less than 5
DO (mg/L) - Downstream
6.9
18.7
10.3
-
Fecal Coliform (#/ml)
< 1
280
14.5
200 MA
400 DM
No Exceedances
TRC (µg/L)
-
-
-
28 DM
Ultraviolet system/chlorine backup
Total Nitrogen (mg/L)
8.2
40
24.8
-
Total Phosphorus (mg/L)
3.7
6.95
5.29
-
pH (su)
6
8.8
N/A
>-6 and <-9
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 March 2017 through April 2022.
REVIEW OF PERMIT LIMITS:
Flow - The facility is operating on average at around 20% of the flow allowed by the permit. None of the 58
monthly average values was above 0.018MGD.
Salem Quarters WWTP Fact Sheet
NPDES Renewal 2022 - July 6, 2022
Page 2
BOD / TSS / Fecal - No limit violations occurred for any of these limited parameters over the permit cycle.
NH3-N - The current permit requires monitor weekly for NH3-N and has summer effluent limits of 2 mg/L
(monthly average) and 10 mg/L (daily max) and winter limits of 7.1 mg/L and 35 mg/L. A recent review by
Division staff has noted that 15A NCAC 2B .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 limits for NH3-N are being adjusted to 4 mg/L and 20 mg/L in the draft permit.
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 4.73 mg/L which is well below the new daily max of 20 mg/L. Only one
(1) monthly average (MA) value was more than 0.31 mg/L with the max MA being 1.3 mg/L. This would
indicate that a MA limit of 4 mg/L should not cause issues. This is obviously an area of change that should be
reviewed closely.
DO - No DO values were below the 5 mg/L daily average limit. Effluent DO numbers were lower than the
upstream and downstream values, but there does not appear to be an impact downstream of the discharge. The
downstream values are in -line with the upstream values.
TRC- The facility utilizes a UV disinfection system. This limit is related only to situations where the backup
chlorination / dichlorination system would be used.
COMPLIANCE:
During the permit cycle this facility had no violations or enforcement actions. The last NOV/NOD was issued in
2009 and the last enforcement action taken was in 2006.
FILE HISTORY REVIEW SUMMARY
Waste Load Allocation (WLA) - January 20, 1994 - The WLA was set for the proposed system with flow of
0.06 MGD and 7010 numbers of 0.1 (sl and 0.31(w). Limits were established for summer and winter
Flow (MGD)
0.06
BOD
m L
TSS
m L
NH3-N
m L
DO
m L
Fecal per
100 mL
pH
SU
TRC
m L
Summer
30
30
2.0
5
200
6 to 9
28
Winter
30
30
7.1
5
200
6 to 9
28
Effluent monitoring was also set for Conductivity, TN and TP
Instream Monitoring for: Temp, DO, Fecal and Conductivity
• Original Permit Issued - December 9, 1994 - This original permit was challenged in early 1995. The
Administrative Law Judge ruled in favor of the petitioner saying that the EMC had acted erroneously. There
is no other information in the file on this process, but it appears that permit was issued possibly with some
modifications. At this time ALJ rulings went back to the EMC for a final agency decision so it is possible that
the EMC overruled the ALJ decision.
• Authorization to Construct (ATC) - June 16, 1995 - This ATC was for construction of the WWTP.
• ATC - December 11, 1998 - for the construction of an ultraviolet disinfection system (UV).
• Engineering Certification - May 1,1999 - covered the construction of the UV system.
• Permit Renewal - January 1997 - Subdivision appears to have only had 24 homes at this time. Renewal
included the following limits and monitoring and removed the ATC special condition:
Flow (MGD)
BOD
TSS
NH3-N
NH3-N
DO
Fecal per
pH
TRC
0.06
(mg/L)
(mg/L)
Summer
Winter
(mg/L)
100 mL
SU
(mg/L)
m L
m L
Monthly Av
30
30
2.0
7.1
5 DA
200
6 to 9
Daily Max
45
45
400
6 to 9
28
Monitoring - Conductivity, TP and TN; Upstream/Downstream - DO, Temp, Fecal; Conductivity
Salem Quarters WWTP Fact Sheet
NPDES Renewal 2022 — July 6, 2022
Page 3
• Permit Renewal - 2002 - Removed Conductivity monitoring and the U/D for fecal. Added a footnote on TRC
limits only applying if Chlorine used.
• Permit Renewal - 2007 - This renewal added NH3-N Daily Max limits of 10 and 35. Application indicates
111 homes and service population of 340 people.
• Permit Renewal - 2012 - This renewal updated the TRC footnote and added parameter codes. The
application notes 177 homes and service population of 450 people. This renewal also appears to have
inadvertently left off the footnote language indicating the TRC limit only applies if chlorine is used.
• Permit Renewal - 2017 - The location of the facility changed from Belews Creek Road to 9999 Rangecrest
Road. Permit also included eDMR language and regulatory citations.
PROPOSED PERMIT CHANGES:
• Updated eDMR requirements to be consistent with final EPA rule.
• Added regulatory citations throughout permit as needed.
• Added caustic feed system to treatment components.
• NH3-N winter limits have been modified in keeping with rule 213.0404 to assure that winter limits are no
less stringent than 2 times the summer limits. The draft permit includes proposed winter limits of 4 and
20 mg/L.
• Footnote on TRC limit only applying if chlorine is used was left off the 2012 and 2017 permits. This
language has been added back to this footnote.
• Permit map information updated.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: July 12, 2022
Permit Scheduled Effective Date: October 1, 2022
STATE CONTACT:
If you have questions concerning the above or the attached documents, please contact Bradley Bennett at
bradley.bennettOncdenr.gov. .
Salem Quarters WWTP Fact Sheet
NPDES Renewal 2022 — July 6, 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 (919) 707-3601.
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 <AABerger@aquaamerica.com>
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 <bradley.bennett@ncdenr.gov>
Sent: Wednesday, July 20, 2022 1:30 PM
To: Berger, Amanda A <AABerger@aquaamerica.com>
Cc: Pearce, Joseph R <JRPearce@aquaamerica.com>; Lambeth, Robyn E <RELambeth@aquaamerica.com>
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: (919) 707-3629
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 <AABerger@aquaamerica.com>
Cc: Pearce, Joseph R <JRPearce@aquaamerica.com>; Lambeth, Robyn E <RELambeth@aquaamerica.com>
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: (919) 707-3629
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
6enny.graznak@ncdenr.gov
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.bennett@ncdenr.gov>
Sent: Wednesday, July 13, 2022 9:19 AM
To: Graznak, Jenny <jenny.graznak@ncdenr.gov>
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: (919) 707-3629
Email: bradlev.bennett(@ncdenr.gov
Email correspondence to and from this address may be subject to public records laws
1
Bennett, Bradley
From:
Sent:
Bennett, Bradley
Friday, July 8, 2022 5:24 PM
To: Carpenter, Sydney
Subject: RE: Draft Permit for Review - Salem Quarters WWTP - NCO083993
Wow, I made a mess of this one. I'll get all that corrected.
Thanks
fi:3
Bradley Bennett
Compliance and Expedited Permitting
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Phone: (919) 707-3629
Email: bradlev.bennettC@ncdenr.gov
Email correspondence to and from this address may be subject to public records laws
From: Carpenter, Sydney <sydney.carpenter@ncdenr.gov>
Sent: Friday, July 8, 2022 4:27 PM
To: Bennett, Bradley <bradley.bennett@ncdenr.gov>
Subject: RE: Draft Permit for Review - Salem Quarters WWTP - NCO083993
Hi Bradley,
I think the draft permit you gave me to review for Salem Quarters WWTP might've been an old version as it didn't
include the changes you cited on the factsheet or draft cover letter. See my notes below!
-Effluent table needs to be updated with the changed winter Ammonia limits and the updated TRC footnote
-Supplement to Cover Sheet is missing the stream index # and HUC #
-Stream index # on the factsheet is incorrect. BIMS also needs to be updated with the correct index #.
-Existing Map uses an older topo as the background. Wouldn't hurt to use a newer topo for the background that shows
the neighborhood and road where the WWTP is located
Happy Friday!
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.carpenter(@ncdenr.gov
1617 Mail Service Center
Raleigh, NC 27699-1617
P=E
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 nett@ncdenr.gov>
Sent: Wednesday, July 6, 2022 3:58 PM
To: Carpenter, Sydney <sydney.carpenter@ncdenr.gov>
Subject: Draft Permit for Review - Salem Quarters WWTP - NCO083993
Hey Sydney,
Hope you are doing well. Here is a third draft for your review. I also found a few minor errors in the previous two and
have updated those drafts/cover letters.
M NCO083933 - Aqua - Salem Quarters WWTP
Thanks
m
Bradley Bennett
Compliance and Expedited Permitting Phone: (919) 707-3629
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: Xiao, Min
Sent: Wednesday, July 6, 2022 1:47 PM
To: Bennett, Bradley
Subject: RE: Another ATC Question
Thanks for the updates Bradley. I will contact the ORC, Morgan Turner, for more details and confirmation. I got his name
from the inspection report that you sent me earlier.
Thanks,
Min
From: Bennett, Bradley <bradley.bennett@ncdenr.gov>
Sent: Wednesday, July 6, 2022 1:42 PM
To: Xiao, Min <Min.Xiao@ncdenr.gov>
Subject: RE: Another ATC Question
Hey Min,
Just an update on this one. I emailed Jenny in the W-SRO and she indicated that the facility had blowers before and
these were replacements. For the caustic system she also indicted that since this was a package treatment system the
caustic feed systems for those were not generally very complex and may not require ATC, but we would like to have
your thoughts on it.
Thanks
fi:3
Bradley Bennett
Compliance and Expedited Permitting
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Phone: (919) 707-3629
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 6, 2022 11:42 AM
To: Xiao, Min <Min.Xiao@ncdenr.gov>
Subject: RE: Another ATC Question
Thanks. Here is the inspection report. These aren't proposed components, it looks like they were installed in 2019.
Bradley Bennett
Compliance and Expedited Permitting Phone: (919) 707-3629
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Email: bradley.ben nett()ncdenr.gov
Email correspondence to and from this address may be subject to public records laws
From: Xiao, Min <Min.Xiao@ncdenr.gov>
Sent: Wednesday, July 6, 2022 11:31 AM
To: Bennett, Bradley <bradley.bennett@ncdenr.gov>
Subject: RE: Another ATC Question
Hi Bradley,
Thank you for checking the inspection reports carefully. Blowers and chemical feed system are essential treatment
unit/equipment which may need an ATC for installation. However, I will need to compare the facility's existing blower
and feed system with the proposed ones to determine. Can you share the inspection report with me? I may reach out to
a few people for more details.
Thanks,
Min
From: Bennett, Bradley <bradley. ben nett@ncdenr.gov>
Sent: Wednesday, July 6, 2022 11:12 AM
To: Xiao, Min <Min.Xiao@ncdenr.gov>
Subject: Another ATC Question
Hey Min,
I have another renewal where the most recent inspection shows some treatment system changes/additions. Just
wanted to check with you to see if these should have required an ATC.
The permit is Aqua NC, Inc — Salem Quarters WWTP — NC0083933. The last inspection in October 2019 indicated that
new blower motors and a new blower had ben installed in September 2019. I'm guessing this is more maintenance and
would not require and ATC? They also indicated that a caustic feed system for pH control was added in October
2019. Would this require an ATC?
Thanks
M
Bradley Bennett
Compliance and Expedited Permitting
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Phone: (919) 707-3629
Email: bradlev.bennettC@ncdenr.gov
Email correspondence to and from this address may be subject to public records laws
Bennett, Bradley
From: Bennett, Bradley
Sent: Wednesday, July 6, 2022 1:39 PM
To: Graznak, Jenny
Subject: RE: Aqua NC, Inc. - Salem Quarters WWTP - NC0083933
Thanks for the info Jenny. That is helpful. I'll let you know if I hear anything different from Min.
No
Bradley Bennett
Compliance and Expedited Permitting
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Phone: (919) 707-3629
Email: bradlev.ben nettCaMcdenr.gov
Email correspondence to and from this address may be subject to public records laws
From: Graznak, Jenny <jenny.graznak@ncdenr.gov>
Sent: Wednesday, July 6, 2022 1:11 PM
To: Bennett, Bradley <bradley.bennett@ncdenr.gov>
Subject: RE: Aqua NC, Inc. - Salem Quarters WWTP - NC0083933
In the past, things like this have not required an ATC. Or at least I didn't think so, but let me know what Min says. The
system already had blowers, so those would be replacements/upgrade. And the caustic feed system ... for a package
plant, I can't imagine that would be anything too complex beyond a large tote that has a hose going to aeration.
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
ienny.graznak@ncdenr.gov
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 nett@ncdenr.gov>
Sent: Wednesday, July 6, 2022 11:37 AM
To: Graznak, Jenny <wenny.graznak@ncdenr.gov>
Subject: Aqua NC, Inc. - Salem Quarters WWTP - NC0083933
Hey Jenny,
I'm working on this renewal now and in the inspection report from 2019 1 noticed notes that they had added a caustic
feed system for pH control as well as blower motors and a blower in 2019. Unlike Briarwood this one did not result in an
NOV from you guys. Maybe the blower changes were maintenance? Just wanted to touch base since I am going to
check with Min Xiao to make sure that none of this should have had an ATC. I'm guessing Min may reach out to you
guys.
MM
Bradley Bennett
Compliance and Expedited Permitting Phone: (919) 707-3629
NC Division of Water Resources
1617 Mail Service Center Email: bradlev.bennettC@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: (919) 707-3629
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 - Salem Quarters WWTP
Permit No. NC0083933
Prepared By: Bradley Bennett
Enter Design Flow (MGD): 0.06
Enter s7Q10 (cfs): 0.01
Enter w7Q10 (cfs): 0.31
<= 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)
0.01
s7Q10 (CFS)
0.01
DESIGN FLOW (MGD)
0.06
DESIGN FLOW (MGD)
0.06
DESIGN FLOW (CFS)
0.093
DESIGN FLOW (CFS)
0.093
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/1)
0
Upstream Bkgd (mg/1)
0.22
IWC (%)
90.29
IWC (%)
90.29
Allowable Conc. (ug/1)
19
Allowable Conc. (mg/1)
1.1
< 1 MGD Policy Applies
Design Permitted
Fecal Coliform
Monthly Average Limit: 200n00mi #VALUE!
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF) 1.11 € #VALUE!
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
Design Permitted
w7Q10 (CFS)
0.31
DESIGN FLOW (MGD)
0.06
DESIGN FLOW (CFS)
0.093
STREAM STD (MG/L)
1.8
Upstream Bkgd (mg/1)
0.22
IWC (%)
23.08
Allowable Conc. (mg/1)
7.1
'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)