NCG590027_Fact Sheet_20190408

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Fact Sheet
NPDES Permit No. COC NCG590027 (formerly NC0088536)

Permit Writer/Email Contact: Derek Denard, [e-mail]
Date: 08Apr2019
Division/Branch: NC Division of Water Resources/Water Quality Permitting Section
Compliance & Expediated Permitting Branch
Fact Sheet Template: Version 28Mar2019

Permitting Action:
☒ Renewal
☐ Renewal with Expansion
☐ New Discharge
☐ Modification (Fact Sheet should be tailored to mod request)

[See Attachment A: NC0088498 Renewal Application, FORM C-WTP]

Complete applicable sections below. If not applicable, enter NA.

1. Basic Facility Information

Facility Information
Applicant/Facility Name: Aqua North Carolina, Inc. / Mitchell Bluff Subdivision- Well #1 WTP
Applicant Address: 202 Mackenan Ct, Cary, NC 27511
Facility Address: Town Lane, Mt Airy 27030
Permitted Flow: Not limited
Facility Type/Waste: MINOR; 100% industrial/ Water Plants and Water Conditioning
Discharge –filter-backwash - Greensand WTP System
Facility Class: Physical Chemical Not Classified
Treatment Units: greensand filters, chemical usage consisting of: Potassium
permanganate, Chlorine and caustic soda
Pretreatment Program (Y/N) No
County: Surry
Region Winston-Salem

Briefly describe the proposed permitting action and facility background: This facility is a greensand
water treatment plant with discharge of wastewaters from media filter backwash, with a design potable
flowrate of 0.05472 MGD, a design backwash/reject flow of 0.00080 and a maximum, monthly average
wastewater discharge of 0.00080 MGD. The facility consists of the following water and wastewater
treatment units: greensand filters, chemical usage consisting of: Potassium permanganate, Chlorine and
caustic soda. [See Attachment A: NC0088498 Renewal Application, FORM C-WTP]

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This facility is eligible for coverage under General Permit NCG590000 for the of discharge backwash
wastewaters from greensand and conventional type water treatment facilities. Eligibility is based on the
following (See Attachment B: General Permit NCG590000 Section A. Coverage, p. 2 of 26).
• The facility is a greensand technology water treatment system.
• There are no toxicity issues (monitoring is not applicable under WTP strategy for greensands).
• There are no WQBELs required for toxicants such as Zinc.
• The discharge is not mixed with other process wastewaters.
• The discharge is not to waters classified as High Quality Waters (HQW) or Outstanding Resource
Waters (ORW).
• The discharge is not from water purification systems using Membrane Treatment (Reverse
Osmosis) or Ion Exchange.
• The discharge would not adversely affect a Federal or State listed endangered or threatened
species or its critical habitat. The discharge is not of pollutants to an impaired waterbody in
excess of the wasteload allocation specified in an EPA-Approved TMDL (Total Maximum Daily
Load).
2. Receiving Waterbody Information:

Receiving Waterbody Information
Outfalls/Receiving Stream(s): Outfall 001- UT to Faulkner Creek
Stream Segment: 12-72-6
Stream Classification: C
Drainage Area (mi2): --
Summer 7Q10 (cfs) 0
Winter 7Q10 (cfs): 0
30Q2 (cfs): 0
Average Flow (cfs): 0
IWC (% effluent): 100%
303(d) listed/parameter: No – See Attachment D: 2016 Final Integrated Report, p.1153
Subject to TMDL/parameter: No – 2011 Turbidity TMDLs in the Yadkin River Basin:
Muddy Creek and the Yadkin River. The Mitchell River is
not impaired for Turbidity.
Basin/Subbasin/HUC: Yadkin-Pee Dee; 03-07-03 [HUC 030401010807]
USGS Topo Quad: Mt. Airy N, NC

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3. Effluent Data Summary
Effluent data is summarized below for the period May2014 through Oct2018.
Table. Effluent Data Summary

Table. Data Entry Errors

4. Instream Data Summary
Instream monitoring may be required in certain situations, for example: 1) to verify model predictions
when model results for instream DO are within 1 mg/l of instream standard at full permitted flow; 2) to
verify model predictions for outfall diffuser; 3) to provide data for future TMDL; 4) based on other
instream concerns. Instream monitoring may be conducted by the Permittee, and there are also
Monitoring Coalitions established in several basins that conduct instream sampling for the Permittee (in
which case instream monitoring is waived in the permit as long as coalition membership is maintained).
If applicable, summarize any instream data and what instream monitoring will be proposed for this
permit action: NA.
Is this facility a member of a Monitoring Coalition with waived instream monitoring (Y/N): NO.
Name of Monitoring Coalition: NA.

Data Limits
Parameter Max Min Average Count MA DM PQL UoM Errors
00070 - Turbidity 39 0.4 13.1 105 ntu no
00076 - Turbidity, HCH Turbidimiter 75 3.2 28.3 4 ntu no
00400 - pH 8.79 6.52 7.44 108 su no
01045 - Iron, Total (as Fe)3140 88 1690.2 18 ug/l yes
01055 - Manganese, Total (as Mn)4070 81 660.9 18 ug/l yes
50050 - Flow, in conduit or thru
treatment plant
0.0008 0.0008 0.0008 969 mgd no
50060 - Chlorine, Total Residual 20 0 7.4 108 17 20 ug/l yes
CO530 - Solids, Total Suspended -
Concentration
60 3.3 10.3 108 30 45 2.5 mg/l no
MA = monthly average; DM = daily maximum; PQL = practical quantitation limit; UoM = Unit of Measure
Not < 6.0 or > 9.0
Date Parameter Value UoM Comments
1/5/2016 50060 - Chlorine, Total Residual 0 ug/l PQL?
6/7/2016 50060 - Chlorine, Total Residual 0 ug/l PQL?
7/26/2016 50060 - Chlorine, Total Residual 0 ug/l PQL?
8/9/2016 01045 - Iron, Total (as Fe)0.75 ug/l UoM mg/L?
8/9/2016 01055 - Manganese, Total (as Mn)0.09 ug/l UoM mg/L?
11/15/2016 01055 - Manganese, Total (as Mn)0.114 ug/l UoM mg/L?
1/11/2017 50060 - Chlorine, Total Residual 0 ug/l PQL?
2/22/2017 01045 - Iron, Total (as Fe)0.46 ug/l UoM mg/L?
2/22/2017 01055 - Manganese, Total (as Mn)0.081 ug/l UoM mg/L?
5/9/2017 01055 - Manganese, Total (as Mn)0.45 ug/l UoM mg/L?
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5. Compliance Summary
Summarize the compliance record with permit effluent limits (past 5 years): See Attachment E:
Monitoring Report Violations Nov2013 to Oct2018, 1 page. An NOV was issued for an exceeded daily
maximum and an exceeded monthly average for July 2017.
Summarize the compliance record with aquatic toxicity test limits and any second species test results
(past 5 years): NA.
Summarize the results from the most recent compliance inspection: The last facility inspection conducted
on 11/06/2018 reported that the facility appeared to be clean and well maintained. See Attachment F:
Inspection Report 11/06/2018, 5 pages.
6. Water Quality-Based Effluent Limitations (WQBELs)
Dilution and Mixing Zones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1Q10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic
Life; non-carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA.
If applicable, describe any mixing zones established in accordance with 15A NCAC 2B.0204(b): NA.
Oxygen-Consuming Waste Limitations
Limitations for oxygen-consuming waste (e.g., BOD) are generally based on water quality modeling to
ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits
(e.g., BOD= 30 mg/l for Municipals) may be appropriate if deemed more stringent based on dilution and
model results.
If permit limits are more stringent than TBELs, describe how limits were developed: NA.
Ammonia and Total Residual Chlorine Limitations
Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of
1.0 mg/l (summer) and 1.8 mg/l (winter). Acute ammonia limits are derived from chronic criteria,
utilizing a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non-Municipals.
Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection
of aquatic life (17 µg/l) and capped at 28 µg/l (acute impacts). Due to analytical issues, all TRC values
reported below 50 ug/l are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: There are no
proposed changes. NCG59000 sets the daily maximum limit for TRC at 17 µg/l.
Reasonable Potential Analysis (RPA) for Toxicants – NA.
Toxicity Testing Limitations
Permit limits and monitoring requirements for Whole Effluent Toxicity (WET) have been established in
accordance with Division guidance (per WET Memo, 8/2/1999). Per WET guidance, all NPDES permits
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issued to Major facilities or any facility discharging “complex” wastewater (contains anything other than
domestic waste) will contain appropriate WET limits and monitoring requirements, with several
exceptions. The State has received prior EPA approval to use an Alternative WET Test Procedure in
NPDES permits, using single concentration screening tests, with multiple dilution follow-up upon a test
failure.
Describe proposed toxicity test requirement: NA.
Mercury Statewide TMDL Evaluation
There is a statewide TMDL for mercury approved by EPA in 2012. The TMDL target was to comply with
EPA’s mercury fish tissue criteria (0.3 mg/kg) for human health protection. The TMDL established a
wasteload allocation for point sources of 37 kg/year (81 lb/year), and is applicable to municipals and
industrial facilities with known mercury discharges. Given the small contribution of mercury from point
sources (~2% of total load), the TMDL emphasizes mercury minimization plans (MMPs) for point source
control. Municipal facilities > 2 MGD and discharging quantifiable levels of mercury (>1 ng/l) will
receive an MMP requirement. Industrials are evaluated on a case-by-case basis, depending if mercury is a
pollutant of concern. Effluent limits may also be added if annual average effluent concentrations exceed
the WQBEL value (based on the NC WQS of 12 ng/l) and/or if any individual value exceeds a TBEL
value of 47 ng/l.
Describe proposed permit actions based on mercury evaluation: NA.
Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation
within this permit: Under the current general permit NCG590000 nutrient monitoring is not required for
Greensand technology that discharges to freshwater.
Other WQBEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: NA.
If applicable, describe any special actions (HQW or ORW) this receiving stream and classification shall
comply with in order to protect the designated waterbody: NA.
If applicable, describe any compliance schedules proposed for this permit renewal in accordance with
15A NCAC 2H.0107( c)(2)(B), 40CFR 122.47, and EPA May 2007 Memo: NA.
If applicable, describe any water quality standards variances proposed in accordance with NCGS 143-
215.3(e) and 15A NCAC 2B.0226 for this permit renewal: NA.
7. Technology-Based Effluent Limitations (TBELs) – NA.
8. Antidegradation Review (New/Expanding Discharge):
The objective of an antidegradation review is to ensure that a new or increased pollutant loading will not
degrade water quality. Permitting actions for new or expanding discharges require an antidegradation
review in accordance with 15A NCAC 2B.0201. Each applicant for a new/expanding NPDES permit must
document an effort to consider non-discharge alternatives per 15A NCAC 2H.0105(c)(2). In all cases,
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existing instream water uses and the level of water quality necessary to protect the existing use is
maintained and protected.
If applicable, describe the results of the antidegradation review, including the Engineering Alternatives
Analysis (EAA) and any water quality modeling results: NA.
9. Antibacksliding Review:
Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(l) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YES/NO): NO.
If YES, confirm that antibacksliding provisions are not violated: NA.
10. Monitoring Requirements
Monitoring frequencies for NPDES permitting are established in accordance with the following
regulations and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 2B.0500; 2)
NPDES Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance,
Reduced Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best
Professional Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not
considered effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti-
backsliding prohibitions would not be triggered by reductions in monitoring frequencies.
For instream monitoring, refer to Section 4.
11. Electronic Reporting Requirements
The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective
December 21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports
(DMRs) electronically. Effective December 21, 2020, NPDES regulated facilities will be required to
submit additional NPDES reports electronically. This permit contains the requirements for electronic
reporting, consistent with Federal requirements.
12. Summary of Proposed Permitting Actions:
NC0088536 is to be converted to COC NCG590027. The applicable effluent page is found in Section B.
(1.) Greensand WTP Effluent Limitations and Monitoring Requirements – Discharging to Freshwater.
[See Attachment C: General Permit NCG590000, Section B. (1.), page 3 of 26.]
Latitude and Longitude were corrected to 36º 29’ 43” and -80º 33’ 43”, respectively. See Attachment G:
Map page from EAA 03-22-2007.

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13. Public Notice Schedule:
Not Applicable for Certificates of Coverage (COCs) Under General Permit NCG590000. The general
permit was submitted to public notice.
See Attachments H, I & J for comments and correspondence.
14. Fact Sheet Addendum (if applicable): NA.
15. Fact Sheet Attachments (if applicable):
A. NC0088536 Renewal Application, FORM C-WTP, 20180709, 7 pages.
B. General Permit NCG590000 Section A. Coverage, p. 2 of 26.
C. General Permit NCG590000 Section B. (1.), p. 3 of 26.
D. 2016 Final Integrated Report, p.1153.
E. Monitoring Report Violations Nov2013 to Oct2018, 1 page.
F. Inspection Report, 11/06/2018, 5 pages.
G. Map pages from EAA 03-22-2007, 3 pages.
H. Email to WSRO, 20181206, 2 pages.
I. Email Charles Weaver for conversion to NCG590000, 20190222, 2 pages.
J. Email of DRAFT to Permittee_WSRO_Maureen Kinney, 1 page.

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ROY COOPER
Governor
MICHAEL S_REGAN
Secreta
Water Resources LINDA CULPEPPER
ENVIRONMENTAL QUALITY Interim Director
July 09, 2018
Shannon V. Becker, President
Aqua North Carolina Inc
202 Mackenan Ct
Cary, NC 27511
Subject: Permit Renewal
Application No. NC0088536
Bannertown Hills Subdivision -Well #2
Surry County
Dear Applicant:
The Water Quality Permitting Section acknowledges the July 6, 2018 receipt of your permit renewal application and
supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW
permitting branch. Per G.S. 150B-3 your current permit does not expire until permit decision on the application is made.
Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit.
The permit writer will contact you if additional information is required to complete your permit renewal. Please respond
in a timely manner to requests for additional information necessary to allow a complete review of the application and
renewal of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/perm its-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
Sincerely,
j ePt8-ibl
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application(WSRO)
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh,North Carolina 27699-1617
919-807-6300
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Aou . A-
June 25,2018
Mr.Wren Thedford
NPDES Unit
DWR,NCDEQ
1617 Mail Service Center
Raleigh,NC 27699-1617 RECEIVED/DENR/DWR
Re: Application for Permit Renewal JUL 0 6 2018
Aqua North Carolina,Inc.
Bannertown Hills Subdivision,Well#2 -WTP Water Resources
NPDES Permit NC0088536 Permitting Section
Dear Mr.Thedford:
Enclosed are three (3) copies of the completed application Form D-WWTP. This submittal includes the
necessary attachments for your office to renew the subject permit.
Aqua of North Carolina,Inc. (AQUA)has also reviewed the Division of Water Resource's General
Permit NCG5900000 for Greensand WTP Effluent Limitations and Monitoring Requirements-
Discharging to Freshwater,and AQUA hereby request that treated discharge from Bannertown Hills
Subdivision—Well#2 be considered for coverage under this General Permit. AQUA understands that if
Coverage under a General Permit is granted,the Division will rescind individual NPDES Permit
NC0088536.
If there are any questions or concerns with our request,please do not hesitate to contact me at
aaowens(@,,aquaamerica.com or 919-653-6965.
Best regards,
AVIA,C(A, id/A_ Owe —s
Amanda Owens
Manager,Environmental Compliance
cc: Laurie Ison
Joseph Pearce
Shannon Becker
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N.'DES PERMIT A:"PLICATI DIN - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NE's-ES Permit Number NC0088536
If you are completing this form in computer use the TAB key or the up - down arrows to move from one
field to the next. To check the boxes, click your mouse on top of the box. Otherwise,please print or type.
1. Contact Information:
Owner Name Aqua North Carolina, Inc.
Facility Name Bannertown Hills Subdivision-Well #2 WTP
Mailing Address 202 Mackenan Ct
City Cary
State / Zip Code NC/27511
Telephone Number 919) 653-6965
Fax Number 919) 460-1788
e-mail Address [e-mail]
2. Location of facility producing discharge:
Check here if same as above 0
Street Address or State Road Town Lane
City Mt. Airy
State / Zip Code NC/ 27030
County Surry
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name Aqua North Carolina, Inc.
Mailing Address 4163 Sinclair Street
City Denver
State / Zip Code NC / 28037
Telephone Number 704)489-9404
Fax Number 704)489-9409
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N 'DES PE LT APPLICATION - SHO I.,T FORM C - WT•'
For discharges associated with water treatment plants
4. Ownership Status:
Federal State Private ® Public
5. Type of treatment plant:
Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by
filtration and disinfection)
Ion Exchange (Sodium Cycle Cationic ion exchange)
Green Sand Filter (No sodium recharge)
Membrane Technology (RO, nanofiltration)
Check here if the treatment process also uses a water softener
6. Description of source water(s) (i.e. groundwater, surface water)
Groundwater Well
7. Describe the treatment process(es) for the raw water:
Raw water is treated by greensand filters in parallel with a 0.0016 MGD discharge of filter
backwash wastewater. Chemicals utilized during this process consist of:
Potassium Permanganate
Chlorine
Caustic soda
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
Wastewater discharge from said treatment works at the location specified on the attached
map into an unnamed tributary to Faulkner Creek, classified C waters in the Yadkin-Pee
Dee River.
9. Number of separate discharge points: 1
Outfall Identification number(s) 001
10. Frequency of discharge: Continuous Intermittent ®
If intermittent:
Days per week discharge occurs: 7 Duration: 80 minutes
11. Plant design potable flow rate 0.005472 MGD
Backwash or reject flow 0.00080 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Unnamed Tributary to Faulkner Creek(Yadkin Pee Dee Basin)
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I
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NPIPES PERMIT APPLICATI a N - SH4RT Ffi RM C - WTP
For discharges associated with water treatment plants
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Alum / aluminum sulfate Yes No k
Iron sulfate / ferrous sulfate Yes No X
Fluoride Yes No X
Ammonia nitrogen / Chloramines YesNo
Zinc-orthophosphate or sweetwater CP1236 Yes No
List any other additives below:
Chlorine
Potassium Permanganate
Caustic Soda
14. Is this facility located on Indian country? (check one)
Yes No '
15. Additional Information:
Provide a schematic of flow through the facility, include flow volumes at all points in
the water treatment process. The plan should show the point[s] of addition for
chemicals and all discharges routed to an outfall [including stormwater].
Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-15:
New applicants must contact a permit coordinator with the NCDENR Customer
Service Center.
Was the Customer Service Center contacted? Yes El No
Analyses of source water collected
Engineering Alternative Analysis
Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a
water quality model.
17. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
Amanda A. Owens Manager Environmental Compliance, Aqua North Carolina, Inc.
P4akd
ame of Person Siing Title
k LeizsIot
Se of Applicant Date
North Carolina General Statute 143-215.6(b)(2)provides that.Any person who knowingly makes any false statement representation,or certification in any application,
record,report,plan,or other document files or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that
Article,or who falsifies,tampers with,or knowingly renders inaccurate any recording or monitonng device or method required to be operated or maintained under Article 21
or regulations of the Environmental Management Commission implementing that Article,shall be guilty of a misdemeanor punishable by a fine not to exceed$25,000,or by
imprisonment not to exceed six months,or by both. (18 U.S.C.Section 1001 provides a punishment by a fine of not more than$25,000 or imprisonment not more than 5
years,or both,for a similar offense.)
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AQUA .
SLUDGE MANAGEMENT PLAN
For
Aqua North Carolina, Inc.
No sludge will be treated on any wastewater treatment plant site operated
by Aqua N.C., Western Division
Where practical, sludge removed from a Aqua N.C., Western Division
facility will be transported via a contract hauler to another Aqua N.C.,
Western Division facility for the purpose of"seeding" a new or under
loaded plant.
Unusable (or "dead") sludge will be removed by a contract hauler and
properly disposed of in accordance with NCGS 143-215.1. Contract
haulers used by Aqua N.C., Western Division will be required to
report the quantity of sludge transported and identify the location of
the proposed disposal site if the sludge is not taken to an existing
plant operated by Aqua N.C., Western Division. Aqua N.C., Western
Division has not entered into any agreement to accept sludge into its
facilities from plants not owned by them.
Aqua N.C., Western Division will keep records on the quantity of sludge
removed from each facility, the name of the contract hauler, and the
destination of the sludge (whether used in another plant or disposed of).
The information will be kept on file and will be made available to any
regulatory agency having jurisdiction over sludge treatment or disposal.
Aqua N.C., Western Division includes all of the facilities under the
jurisdiction of the Winston-Salem Regional Office.
202 MacKenan Court,Cary,NC,27511 • 919.467.8712 • AquaAmerica.com
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Permit No. NCG590000
Page 2 of 26

PART 1
A. Coverage

(1.) Eligibility of Coverage
a. Existing Greensand Water Treatment Plants (WTPs) with individual NPDES permits and new facilities seeking a
NPDES permit for a greensand water purification system utilizing Iron and/or Manganese removal systems are
eligible for coverage under this general permit. Backwash wastewaters from similar activities such as sand filtration
or systems utilizing calcite filtration are eligible and covered under the Greensand WTP effluent requirements section
in this general permit.

b. Existing Conventional WTPs with a wastewater discharge resulting from water purification facilities with filter
backwash, sedimentation basin washdown, and decant from water treatment facilities are eligible for coverage under
this general permit.

(2.) Limitations on Coverage
a. Although this general permit does not cover the following types of discharges, other permits such as an
individual NPDES permit, an alternate general permit, or other approval from the Division may be obtained.
This permit does not authorize discharges from Water Treatment Plants with the following:
 Discharges that are mixed with other process wastewaters.
 Discharges to waters classified as High Quality Waters (HQW) or Outstanding Resource
Waters (ORW).
 Discharges from water purification systems using Membrane Treatment (Reverse Osmosis) or
Ion Exchange.
 Discharges that would adversely affect a Federal or State listed endangered or threatened
species or its critical habitat.
 Discharges of pollutants to an impaired waterbody in excess of the wasteload allocation
specified in an EPA-Approved TMDL (Total Maximum Daily Load).
 Discharges from new Conventional WTPs proposing a discharge to surface waters.

b. New Conventional WTPs proposing a discharge to surface waters shall be covered under an individual permit for
at least one permit cycle. Upon permit renewal, if an evaluation of the facility’s wastewaters shows no need for
additional limitations or requirements beyond what is conta ined in this general permit, then the permittee will be
considered for coverage.

c. Conventional WTPs proposing to expand existing facilities shall submit a Notice of Intent (NOI) permit
application with the proposed expansion/treatment details and an Engineering Alternative Analysis for Division
review and approval in order to obtain coverage for the expansion under this permit and receive a revised
Certificate of Coverage (CoC).

d. This permit does not authorize discharges that the Division has determined to be or which may reasonably be
expected to be contributing to a violation of a water quality standard (as defined in the “Red Book” or NC
Administrative Code 15A NCAC 02B .0100, .0200, and .0300).

e. If the Division determines at any time that the discharge is causing or contributing to a violation of water quality
standards or if the Division has any other grounds for modifying or revoking this permit, the Division may require
corrective action or require the discharge be permitted differently in accordance with Part II, Section B of this
permit. The Division may deny coverage under this permit and require submittal of an applica tion for an
individual NPDES permit based on a review of the Notice of Intent (NOI) or other information.

f. Whole Effluent Toxicity (WET) test results for the past three years shall be reviewed for existing or
expanding Conventional WTPs applying for coverage under this general permit. Permittees with WET test
results showing potential for aquatic toxicity may be denied coverage under this general permit which
includes a WET limitation of “Pass”.

(3.) Transfer Coverage from Other Permits
Upon issuance of this general permit, all existing and active individual permits for Greensand and
Conventional type WTPs will automatically be considered for coverage under this general permit as
permit renewal applications are received.

DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82

Permit No. NCG590000
Page 3 of 26

B. (1.) Greensand WTP Effluent Limitations and Monitoring Requirements – Discharging to Freshwater

a. During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge
wastewaters from iron and manganese removal type systems for the purpose of water purification to the receiving waters. Such
discharges shall be limited and monitored1 by the Permittee as specified below:

PARAMETER EFFLUENT LIMITS MONITORING REQUIREMENTS
Monthly Average Daily Maximum2 Measurement
Frequency
Sample
Type
Sample
Location
Flow3 Monitor Only (MGD) Twice per Month Instantaneous
Or Estimate Effluent
Total Suspended Solids4 30.0 mg/l
(Exception:Trout Waters)
45.0 mg/L
(Exception:Trout Waters) Twice per Month Grab Effluent
Total Residual Chlorine5 - 17 µg/L Twice per Month Grab Effluent
pH 6.0 < pH < 9.0 s.u. Monthly Grab Effluent
Turbidity6 50 NTU daily maximum
(Exceptions: Trout Waters, Lakes & Reservoirs) Monthly Grab Effluent
Total Manganese7, 8 Monitor Only µg/L (Exception: WS Waters) Quarterly Grab Effluent
Total Iron7 Monitor Only (µg/L) Quarterly Grab Effluent
Total Zinc9 Monitor Only (µg/L) Quarterly Grab Effluent
Total Fluoride10 Monitor Only (µg/L) Quarterly Grab Effluent

Footnotes:
1. eDMR: No later than 270 days from the effective date listed on the CoC issued with this permit, begin submitting discharge
monitoring reports electronically using NC DWR’s eDMR application system. See Special Condition C.
2. The Daily Maximum limits apply to all permittees. More stringent limitations apply to discharges to Trout and Water Supply (WS)
Waters and Lakes & Reservoirs as noted above and detailed in the footnotes below. Refer to the Certificate of Coverage (CoC) for
receiving stream classifications.
3. For instantaneous flow monitoring, the duration of the discharge must be reported in addition to the total flow.
4. TSS: Permittees discharging to Trout waters shall not exceed a monthly average of 10 mg/L and a daily maximum limit of 15 mg/L.
5. TRC: Limit and monitoring requirements only apply if the facility adds chlorine or chlorine derivatives to water that is eventually
discharged. The Division shall consider all effluent TRC values reported below 50 ug/L to be in compliance with the permit.
However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including
field certified), even if these values fall below 50 ug/L.
6. Turbidity: The Turbidity Daily Maximum effluent limit is 10 NTU for Trout waters and 25 NTU for Lakes & R eservoirs not designated
as trout waters.
7. Iron & Manganese: This sampling requirement does not apply to b ackwash from calcite filtration or similar systems which are not
designed for iron or manganese removal and are not blended with other WTP wastewaters.
8. Total Manganese: Permittees discharging to WS waters shall not exceed the manganese water quality standard defined in
Administrative Code 15A NCAC 2B .0100, .0200, and .0300. Currently the water quality standard for manganese is a daily maxim um
limit of 200 µg/L.

9. Zinc: This requirement applies only to wastewater discharges from plants that use water treated with zinc orthophosphate for
backwashing filters.
10. Fluoride: This requirement applies only to wastewater discharges from plants that backwash with fluoridated finished water.
b. SAMPLES SHALL BE TAKEN AT THE OUTFALL BUT PRIOR TO MIXING WITH THE RECEIVING WATERS
c. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM IN OTHER THAN TRACE AMOUNTS.

DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
Final 2016 Integrated Report-All Assessed Waters
Yadkin River Headwaters Subbasin Yadkin-Pee Dee River Basin
Assessment Unit Name
Assessment Unit Number
Assessment Unit Description
Water Quality Classification Length/Area Units
Endicott Creek (Branch) (Raven
Knob Lake)
From source to dam at Raven Knob Lake located 0.5 mile (more or less)
upstream from Surry County SR 1338
2.8 FW MilesWS-II,B;Tr,HQW12-63-5-(1)
Assessment Criteria Status Reason for Rating Parameter of Interest Category
Meeting Criteria Not Impaired Benthos (Nar, AL, FW)1
Faulkner Creek From source to Ararat River
6.1 FW MilesC12-72-6
Assessment Criteria Status Reason for Rating Parameter of Interest Category
Meeting Criteria Not Impaired Benthos (Nar, AL, FW)1
Fish Dam Creek (Fishtrap Creek)From source to Yadkin River
4.2 FW MilesWS-IV12-35
Assessment Criteria Status Reason for Rating Parameter of Interest Category
Meeting Criteria Good-Fair Benthos (Nar, AL, FW)1
Fisher River From Burris Creek to a point 1.0 mile upstream of the Town of Dobson
water supply intake
6.3 FW MilesWS-II;HQW12-63-(7)
Assessment Criteria Status Reason for Rating Parameter of Interest Category
Meeting Criteria Excellent Fish Community (Nar, AL, FW)1
Fisher River From Town of Dobson water supply intake to Little Fisher Creek
2.4 FW MilesC12-63-(9)a
Assessment Criteria Status Reason for Rating Parameter of Interest Category
Meeting Criteria Excellent Benthos (Nar, AL, FW)1
Page 1153 of 13064/11/2018 2016 Integrated Report -All Assessed Waters
Fish tissue assessments for mercury apply to all waters and are not individually listed
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
MRs Between and Violation Category:Program Category:
Param Name County:Subbasin:%Violation Action:
Major Minor:%
Permit:
Facility Name:
Region:--NC0088536
%%
%
%
%%
%
11 2013 10 2018
MONITORING REPORT(MR) VIOLATIONS for:12/06/18Report Date:1Page:of 1
PERMIT:NC0088536 FACILITY:Aqua North Carolina Inc - Bannertown Hills Subdivision
- Well #2
COUNTY:Surry REGION:Winston-Salem
%
Over
UNIT OF
MEASURE VIOLATION ACTIONVIOLATION TYPECALCULATED
VALUELIMITFREQUENCYVIOLATION
DATEPARAMETERLOCATIONOUTFALL/
PPI
MONITORING
REPORT
Limit Violation
07 - 2017 001 Effluent Solids, Total Suspended -
Concentration
07/25/17 2 X month Daily Maximum
Exceeded
Proceed to NOV6045mg/l 33.3
07 - 2017 001 Effluent Solids, Total Suspended -
Concentration
07/31/17 2 X month Monthly Average
Exceeded
Proceed to NOV34.330mg/l 14.3
05 - 2018 001 Effluent Solids, Total Suspended -
Concentration
05/01/18 2 X month Daily Maximum
Exceeded
None4745mg/l 4.4
%
Over
UNIT OF
MEASURE VIOLATION ACTIONVIOLATION TYPECALCULATED
VALUELIMITFREQUENCYVIOLATION
DATEPARAMETERLOCATIONOUTFALL/
PPI
MONITORING
REPORT
Monitoring Violation
08 - 2016 001 Effluent Turbidity 08/31/16 2 X month Frequency Violation No Action, BPJntu
10 - 2016 001 Effluent Turbidity 10/31/16 2 X month Frequency Violation No Action, BPJntu
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
EPA
United States Environmental Protection Agency
Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 N 52 NC0088536 18/11/06 C S31112171819 20
21 66
Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved-------------------
N67707172 73 74 75 80
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Bannertown Hills Subdivision - Well #2
Town Ln
Mount Airy NC 27030
Entry Time/Date Permit Effective Date
Exit Time/Date Permit Expiration Date
09:00AM 18/11/06 14/05/01
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Other Facility Data
09:30AM 18/11/06 18/12/31
Name, Address of Responsible Official/Title/Phone and Fax Number
Gary Moseley,4163 Sinclair St Denver NC 28037//704-489-9404/7044899409 Contacted
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Other
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s)Agency/Office/Phone and Fax Numbers Date
Gary Hudson Division of Water Quality//336-776-9694/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#1
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
NPDES yr/mo/day
18/11/06
Inspection Type
C3111218
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
November 26, 2018
Shannon V. Becker, President
Aqua NC, Inc.
202 MacKenan Court
Cary, NC 27511
Subject: Compliance Evaluation Inspection
Nine Greensand Filtration Water Treatment Systems
NPDES Permit No. NC0088536, NC0088552, NC0088528, NC0088625, NC0088498, NC0088633,
NC0088617, NC0088609, NC0088854.

Dear Mr. Becker:
On November 6, 2018, Gary Hudson of this office met with William Young, ORC of Aqua NC, to
perform a Compliance Evaluation Inspection on the nine NPDES permitted greensand water filtration
plants located throughout Surry County. This type of inspection consists of two basic parts: an
in-office file review and an on-site inspection of the treatment facility. The findings and observations
are outlined below:
Bannertown Hills Subdivision Well # 2 – NC0088536
Location: Town Lane, Mount Airy, NC 27030
Permitted Flow: 0.0016 MGD
Discharge Point: Discharges into a flexible black plastic pipe that runs 100’ downhill to the west of the
plant, and eventually into an unnamed tributary to Faulkner Creek in the Yadkin-Pee Dee River Basin.
Colonial Woods Subdivision – Wells 1 & 2 – NC0088552
Location: Atkins Lane, Mount Airy, NC 27030
Permitted Flow: 0.002 MGD
Discharge Point: Discharges into a drain pipe that runs 100’ downhill to the north of the plant, and
eventually into an unnamed tributary to Bull Creek, a class “C” water in the Yadkin – Pee Dee River
Basin.
Hillcrest Subdivision – Well # 3 – NC0088528
Location: Lynnewood Drive, Mount Airy, NC 27030
Permitted Flow: 0.00168 MGD
Discharge Point: Discharges under pressure into an underground gravel pit approximately 50’
northwest of the water plant, and eventually into an unnamed tributary to Champ Creek, a class “C”
water in the Yadkin-Pee Dee River Basin.
NC0088536 17 (Cont.)
Page#2
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
Permit:NC0088536
Inspection Date:11/06/2018
Owner - Facility:
Inspection Type:
Bannertown Hills Subdivision - Well #2
Compliance Evaluation
The Hollows Subdivision – Well # 1 – NC0088625
Location: Lois Lane, Mount Airy, NC 27030
Permitted Flow: 0.002 MGD
Discharge Point: Approximately 100’ southwest of water plant, and eventually into an unnamed
tributary to Stewarts Creek, class “C” waters in the Yadkin – Pee Dee River Basin.
Mitchell Bluff Subdivision – Well # 1 – NC0088498
Location: Mitchell Cove Road, Elkin, NC 28621
Permitted Flow: 0.00168MGD
Discharge Point: Into a PVC pipe that runs 100’ to the west of the water plant, and eventually into an
unnamed tributary to the Mitchell River in the Yadkin – Pee Dee River Basin.
Reeves Woods Subdivision – Well # 2 – NC0088633
Location: Reeves Mill Road, Mount Airy, NC 27030
Permitted Flow: 0.002 MGD
Discharge Point: 100’ east of the water plant at the tree line, and eventually into an unnamed tributary
to Rutledge Creek in the Yadkin – Pee Dee River Basin.
Snow Hill Subdivision – Well # 1 – NC0088617
Location: Snow Hill Drive, Dobson, NC 27017
Permitted Flow: 0.00252 MGD
Discharge Point: Approximately 100’ south of the water plant into a field, and eventually into an
unnamed tributary to Cody Creek, class “C” waters in the Yadkin – Pee Dee River Basin.
Windgate Subdivision – Well # 1 – NC0088609
Location: Simmons Road, Dobson, NC 27017
Permitted Flow: 0.00168 MGD
Discharge Point: 100’ southwest of the water plant, and eventually into an unnamed tributary to the
Fisher River, class “C” waters in the Yadkin – Pee Dee River Basin.
Pine Lakes Subdivision – Well # 2 – NC0088854
Location: Gloria Road, Mount Airy, NC 27030
Permitted Flow: 0.002 MGD
Discharge Point: The equipment for the greensand filtration has recently been installed.

All of these sites appeared to be clean and well maintained. No problems or concerns were
noted.Should you have any questions concerning this report, please contact Gary Hudson or me at
[phone].
Sincerely,
Sherri V. Knight, P.E.
Regional Supervisor
Page#3
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
Permit:NC0088536
Inspection Date:11/06/2018
Owner - Facility:
Inspection Type:
Bannertown Hills Subdivision - Well #2
Compliance Evaluation
Water Quality Regional Operations
Division of Water Resources
cc:Central Files
WSRO
Page#4
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
Permit:NC0088536
Inspection Date:11/06/2018
Owner - Facility:
Inspection Type:
Bannertown Hills Subdivision - Well #2
Compliance Evaluation
Other Yes No NA NE
Comment:
Page#5
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
1
Denard, Derek
From:Denard, Derek
Sent:Thursday, December 06, 2018 11:28 AM
To:Hudson, Gary; Boone, Ron
Cc:Knight, Sherri
Subject:Aqua North Carolina Inc. - Greensand WTP Renewals/Transfers to coverage under NCG590000
Gary & Ron, 

The following is a list of Aqua greensand WTP permits that are up for renewal: 

Permit Owner Facility County Expires
NC0088498 Aqua North Carolina, Inc. Mitchell Bluff - Well #1 Surry 12/31/2018
NC0088609 Aqua North Carolina, Inc. Windgate Subdivision Surry 1/31/2019
NC0088528 Aqua North Carolina, Inc. Hillcrest Subdivision - Well #3 Surry 12/31/2018
NC0088536 Aqua North Carolina, Inc. Bannertown Hills Subdivision - Well #2 Surry 12/31/2018
NC0088552 Aqua North Carolina, Inc.
Colonial Woods Subdivision - Wells 1
and 2 Surry 1/31/2019
NC0088854 Aqua North Carolina, Inc. Pine Lakes Subdivision - Well #2 Surry 1/31/2019
NC0088617 Aqua North Carolina, Inc. Snow Hill subdivision Surry 2/28/2019
NC0088625 Aqua North Carolina, Inc. The Hollows subdivision Surry 2/28/2019
NC0088633 Aqua North Carolina, Inc. Reeves Woods Subdivision Well #2 Surry 2/28/2019
NC0088501 Aqua North Carolina, Inc. Stonington Subdivision - Well #1 Forsyth 2/28/2019

Aqua has indicated that they would like to have coverage under the general permit for these. Most likely all of them will 
be converted to General Permit NCG590000. Please note that conversion to the general permit will not require public 
notice. We should be able to process these renewals/conversions in a couple of week instead of months. I would like to 
knock out the 3 that expire this month by December 31. Please let me know if you have any comments or staff reports 
(e‐mail is fine) for any of these facilities. 

Thanks, 

Derek C Denard
Environmental Specialist
Compliance & Expedited Permitting Unit
N.C. Division of Water Resources
N.C. Department of Environmental Quality 

919 707 3618 office
919 707 9000 main DWR
[e-mail]

N. C. Division of Water Resources
Water Quality Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
2

DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
1
Denard, Derek
From:Weaver, Charles
Sent:Friday, February 22, 2019 10:28 AM
To:Denard, Derek
Subject:RE: Aqua Greensands to convert to NCG59 in BIMS
See details below 

From: Denard, Derek  
Sent: Thursday, February 21, 2019 12:16 PM 
To: Weaver, Charles <[e-mail]> 
Subject: Aqua Greensands to convert to NCG59 in BIMS 

Charles, 

Below is a list of greensands that can be converted to NCG59. 

NC0088498 Aqua North Carolina, Inc. Mitchell Bluff ‐ Well #1 ‐> NCG590024 
NC0088609 Aqua North Carolina, Inc. Windgate Subdivision ‐> NCG590025 
NC0088528 Aqua North Carolina, Inc. Hillcrest Subdivision ‐ Well #3 ‐> NCG590026 
NC0088536 Aqua North Carolina, Inc. Bannertown Hills Subdivision ‐ Well #2 ‐> NCG590027 
NC0088552 Aqua North Carolina, Inc. Colonial Woods Subdivision ‐ Wells 1 and 2 ‐> NCG590028 
NC0088617 Aqua North Carolina, Inc. Snow Hill subdivision ‐> NCG590029 
NC0088625 Aqua North Carolina, Inc. The Hollows subdivision ‐> NCG590030 
NC0088633 Aqua North Carolina, Inc. Reeves Woods Subdivision Well #2  ‐> NCG590031 

Please let me know what the COC numbers are. 
By the way, I have two others that may end up as individual permits because of a possible Zinc limit. 

Thanks, 

Derek C Denard
Environmental Specialist
Compliance & Expedited Permitting Unit
N.C. Division of Water Resources
N.C. Department of Environmental Quality 

919 707 3618 office
919 707 9000 main DWR
[e-mail]

N. C. Division of Water Resources
Water Quality Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
2

DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82
1
Denard, Derek
From:Denard, Derek
Sent:Tuesday, March 19, 2019 5:56 PM
To:'[e-mail]'
Cc:Hudson, Gary; Kinney, Maureen
Subject:DRAFT COC NCG590027 Aqua North Carolina, Inc. - Bannertown Hills Subdivision - Well #2
Attachments:NCG590027 Aqua_Bannertown Hills COC 2019.docx.pdf
Ms. Owens, 

Please find the attached draft of certification of coverage (COC) NCG590027 Aqua North Carolina, Inc. ‐ Bannertown Hills 
Subdivision ‐ Well #2. Please review this document to assure your understanding of the permit limits and monitoring 
conditions, and to correct errors, if any. Please provide any comments to me via email [[e-mail]] or 
write to my attention care of DEQ / DWR / NPDES Program no later than April 2, 2019. 

Sincerely, 

Derek C Denard
Environmental Specialist
Compliance & Expedited Permitting Unit
N.C. Division of Water Resources
N.C. Department of Environmental Quality 

919 707 3618 office
919 707 9000 main DWR
[e-mail]

N. C. Division of Water Resources
Water Quality Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

DocuSign Envelope ID: 6A2C0A81-78BC-4C20-B536-9B86AFEADD82