NC0088889_Draft Permit_20180517

ROY COOPER
Governor
MICHAEL S. RAGAN
Secretary
LINDA CULPEPPER
Water Resources Interim Director
ENVIRONMENTAL QUALITY
May 30, 2018
Shannon V. Baker, President
AQUA North Carolina, Inc.
202 MacKenan Court
Cary,North Carolina 27511
Subject: NPDES Permit-DRAFT Review
Permit NC0088889
Hopson Downs Subdivision Well#4 WTP, Class PC-1
Spence Farms Road, Holly Springs
Wake County
Dear Mr. Baker:
Based on your request to renew the subject permit, the Division of Water Resources (DWR or
the Division)hereby transmits a renewal draft for your review and comment. Please review it
carefully to ensure your understanding of the limits and monitoring conditions, and to correct
errors, if any.
Concurrent with this notification, the Division will solicit public comment on this draft by
publishing a notice in newspapers having circulation in the general Wake County area, as
required by the NPDES Program. Please provide your written comments, if any,to DENR/
DWR/NPDES Program no later July 6,2018 (approximately 30 days after receiving this
document). Your written comments are welcome, but are not mandatory.
The Division has reviewed your Engineering Alternatives analysis (EAA) for the subject site,
submitted with your application to renew. The EAA presents present-value costs and rationale
for discharges to a POTW [1.3 miles away], land-based disposal, surface irrigation, reuse, and a
surface-water discharge. DWR concurs that a discharge to surface waters is the best viable
disposal alternative based on cost.
Changes for Renewal.We understand that the subject facility has not discharged/reported no
effluent monitoring data since before the previous permit cycle(2009),i.e., the Basinwide
Information Management System (BIMS)has no discharge records (Jan2005—May2018). This
draft therefore reflects your stated intent to re-equip this facility with a new treatment array of
greensand filters. It follows that the NPDES Unit has applied the current WTP permitting
guidance(2009) for use of this technology. We have discontinued monitoring for Manganese(no
longer a parameter of concern), and have added monitoring for metals and Total Hardness
(effluent and upstream), to evaluate metals in dissolved fraction, as required by EPA(see permit
section [A. (1.)]. This permit continues to require monitoring for Total Nitrogen(TN) and Total
Phosphorus (TP), as required of discharges under the Neuse River Basin Management Strategy.

Shannon V.Baker,President
AQUA North Carolina,Inc.
May 30,2018
Page 2 of 2
Because this facility's preferred operation is 100%recycle(discharging only on rare occasions)
and therefore has no effluent database, Hopson Downs Subdivision Well#4 WTP is not currently
eligible for transfer to General Permit NCG590000.
Division records show that you have successfully registered with the eDMR Program. Please be
reminded that until the state's eDMR application is approved compliant with EPA's Cross-
Media Electronic Reporting Regulation (CROMERR), all permittees must continue to submit
hardcopy of DMRs as backup to eDMR reporting [see permit section A. (4.)].
Following the mandatory 45-day public comment period, the Division will review all pertinent
comments, if any, and take appropriate action prior to issuing an NPDES permit final. If you have
questions concerning this draft,please e-mail me [[e-mail]], or call my direct
line(919) 807-6394.
' sp: dully
4‘'
Joe R. Corpo .n, L.G.
Compliance . d Expedited Permitting Unit
Enclosure: NPDES Permit NC008887 (DRAFT)
hc: NPDES Program Files[draft permit and Fact Sheet]
ec: DWR/RRO,Danny Smith,Supervisor[draft permit and Fact She t]
OCU,Maureen Kinney[draft permit and Fact Sheet]

NPDES Permit NC0088889
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
Aqua North Carolina, Inc.
is hereby authorized to discharge treated wastewater from a facility known as
Hopson Downs Subdivision — Well #4 WTP
Spence Farms Road, Holly Springs
Wake County
to receiving waters designated as unnamed tributary to Basal Creek within the Neuse River Basin, in
accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
II, III, and IV hereof.
The permit shall become effective , 2018.
This permit and the authorization to discharge shall expire at midnight on April 30, 2023.
Signed this day , 2018.
Linda Culpepper, Interim Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 5

NPDES Permit NC0088889
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer effective.
Therefore, the exclusive authority to operate and discharge from this facility arises under the permit
conditions, requirements, terms, and provisions described herein.
Aqua North Carolina, Inc.
is hereby authorized to:
1. continue to operate a filter-backwash treatment system employing greensand filter technology
[AdEdge, AD26] to treat groundwater in support of potable-water production at 0.0.45 MGD [max
well yield], generating backwash discharge averaging 0.006 MGD as needed for-12 minutes,
utilizing
• a groundwater source well
• recycle pump
• filter media AdEdge AD26 (manganese dioxide)
• two each 5,000-gallon backwash/sludge-storage tanks
• one additional sludge-storage tank
• recycle pump
• sedimentation filter
• chlorine disinfection
• dechlorination
applying the chemicals
• chlorine
• manganese dioxide [Mn02]
from facilities located at the AQUA Hopson Downs Subdivision - Well #4 WTP, Spence Farms
Road, Holly Springs, Wake County;
• operating as a 100% recycle system where discharge to surface waters shall
occur only during extraordinary circumstances, and
• on those occasions, shall meet all effluent limitations and monitoring conditions
found in Part A. (1.) of this permit; and
2. on those occasions, discharge from said treatment works via Outfall 001, at a location specified
on the attached map, into an unnamed tributary to Basal Creek [Stream Segment 27-43-15 (3)], a
waterbody currently classified B; NSW waters within Subbasin 03-04-03 [HUC: 03030201] of
the Neuse River Basin.
Page 2 of 5

NPDES Permit NC0088889
PART I
A. (I.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[NCAC 02B.0400 et seq., 02B.0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration,the Permittee is
authorized to discharge filter backwash via Outfall 001. Such discharges shall be limited,monitored and
reported]. by the Permittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTIC
[PARAMETER CODES] Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location 2
Flow 2 50050 Episodic Estimate Effluent
Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L Episodic3 Grab Effluent
Total Residual Chlorine 50060 17 µg/L 4 Episodic3 Grab Effluent
pH [standard units] 00400 Not<6.0 or>9.0 Episodic3 Grab Effluent
Turbidity 5 (mg/L) 00070 Episodic3 Grab Effluent
Total Manganese(µg/L) 01055 Quarterly Grab Effluent
Total Copper(µg/L) 01042 Quarterly ' ~ . Grab Effluent
Total Zinc(µg/L) 01092 Quarterly Grab Effluent
Total Hardness(mg/L) 00900 Quarterly Grab E&U
[CaCO3 of Ca+Mg]
Total Nitrogen(TN) 6(mg/L) C0610 2/Annually Grab Effluent
Total Phosphorus(TP)(mg/L) C0665 2/Annually Grab Effluent
Footnotes:
1. From the permit effective date,the Permittee shall report monthly discharge monitoring data
electronically using the NC DWR's Electronic Discharge Monitoring Report(eDMR)internet
application. [See Section A.(2.) for eDMR submittal requirements.]
2. Sampling and Flow: E=Effluents U=upstream; the Permittee shall record both flow rate and duration in
log books,to be kept available onsite for DWR inspection,and report Total Daily Discharge in monthly
DMRs/eDMRs.
3. After recording two(2)discharge episodes,additional monitoring is not required during a reporting
month.
4. The Division shall consider compliant all TRC effluent values reported below 50 µg/L.However,the
Permittee shall continue to record and submit all values reported by a North Carolina-certified test
method(including field certified),even if these values fall below 50 µg/L.
5. Discharge from this facility shall not cause receiving-stream turbidity to exceed 50 NTU.If instream
background conditions exceed 50 NTU,this discharge shall not cause instream turbidity to increase.
6. TN=TKN+NO3-N+NO2-N,where TN is Total Nitrogen,TKN is Total Kjeldahl Nitrogen,and NO3-
N+NO2-N are Nitrate and Nitrite Nitrogen,respectively.
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NPDES Permit NC0088889
Conditions:
• All effluent samples shall accurately represent the physical and chemical character of the discharge.
• The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
• The Permittee shall discharge no waste or chemicals unrelated to the responsible treatment of raw water.
• The discharge ditch shall be lined or fitted with rip rap to prevent erosion discharges to the creek.
A. (2.) ELECTRONIC REPORTING - DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports(DMRs)and program reports
and specify that,if a state does not establish a system to receive such submittals,then permittees must submit
monitoring data and reports electronically to the Environmental Protection Agency(EPA). The fmal NPDES
Electronic Reporting Rule was adopted and became effective on December 21,2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D.(2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E.(5.)(a)1"
Effective December 21,2016,the permittee shall report discharge monitoring data electronically using the
NC DWR's Electronic Discharge Monitoring Report(eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and
submit DMRs electronically using the internet. Until such time that the state's eDMR application is
compliant with EPA's_Cross-Media Electronic Reporting Regulation(CROMERR),permittees will be
required to submitall discharge monitoring data to the state electronically using eDMR and will be required
to complete the eDMR submission byprinting, signing, and submitting one signed original and a copy of the
computer printed eDMR to the following address:
NC DENR/,Division of Water Resources/Water Quality Permitting Section
ATTENTIOI+ Central-Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access,then a
temporary waiver from the NPDES electronic reporting requirements may be granted and discharge
monitoring data may be submitted on paper DMR forms(MR 1, 1.1,2,3)or alternative forms approved by
the Director. Duplicate signed copies ihall be submitted to the mailing address above. See"How to Request
a Waiver from Electronic Reporting"section below.
Regardless of the submission method,the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility,on the last day of the month following the
commencement of discharge. Starting bn December 21,2020,the permittee must electronically report the
following compliance monitoring data and reports,when applicable:
• Sewer Overflow/Bypass Event Reports;
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NPDES Permit NC0088889
• Pretreatment Program Annual Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division(see"How to Request a Waiver
from Electronic Reporting" section below).
2. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an electronic
reporting waiver, a permittee must first submit an electronic reporting waiver request to the Division.
Requests for temporary electronic reporting waivers must be submitted in writing to the Division for written
approval at least sixty(60)days prior to the date the facility would be required under this permit to begin
submitting monitoring data and reports. The duration of a temporary waiver shall not exceed 5 years and
shall thereupon expire. At such time,monitoring data and reports shall be submitted electronically to the
Division unless the permittee re-applies for and is granted a new temporary electronic reporting waiver by the
Division. Approved electronic reporting waivers are not transferrable. Only permittees with an approved
reporting waiver request may submit monitoring data and reports on paper to the Division for the period that
the approved reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
3. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section
B. (11.)(a)or by a duly authorized representative of that person as described in Part II, Section B. (11.)(b). A
person, and not a position,must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and
login credentials to access the eDMR system. For more information on North Carolina's eDMR system,
registering for eDMR and obtaining an eDMR user account,please visit the following web page:
http://portal.ncdenr.orgwb/wq/almi og/ipoledint
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE
ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of
my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
4. Records Retention [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period
may be extended by request of the Director at any time [40 CFR 122.41].
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