NC0063860_Permit Modification_20170424

Water Resources ^
Environmental Quality
April 24, 2017
Mr. Shannon V. Becker, President
Aqua North Carolina, Inc.
202 MacKenan Court
Cary, North Carolina 28640
ROY COOPER
Govemor
MICHAEL S. REGAN
Secretary
S. JAY ZIMMERMAN
Director
Subject: Modification of NPDES Permit NCO063860
Harbor Estates W WTP
Mecklenburg County
Dear Mr. Becker:
The Division of Water Resources (the Division) hereby issues the attached NPDES permit for the subject
facility. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1
and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated October 15, 2007, or as subsequently amended.
We made the following modifications to your permit:
1. updated the supplement to permit cover sheet to include filter backwash from ion exchange
technology water supply well treatment systems introduced into the equalization basin by tanker
truck from the following water treatment systems: Fleetwood Acres and Old South Lane
2. added quarterly monitoring with limits for Copper, Fluoride, Chloride and Zinc sampling in
accordance with parameters included in the water treatment plant strategy for ion exchange
technology [see Part I, Section A. (1.)]
3. added quarterly monitoring for effluent and upstream Total Hardness
4. added Chronic Toxicity (Ceriodaphnia dubia) 7-day pass/fail test at 90% in January, April, July
and October [See Part I, Section A. (L) and A. (6.)] in accordance with water treatment plant
strategy for ion exchange technology
5. added radiological monitoring with limits for the following parameters [see Part I, Section A. (1.)]:
• Combined radium-226 and radium-228
• Alpha emitters, excluding radon and uranium
• Beta emitters, excluding potassium40 and other naturally occurring radionuclides
• Strontium-90
• Tritium
• Uranium.
In response to your request to remove Total Hardness, Total Fluoride, Total Zinc and Total Copper
monitoring from this permit, the following Footnote 6 is inserted for these parameters:
After securing a minimum of 12 sample analyses (sampling no more frequently than 2/month),
the Permittee may submit a written request for the Division to reevaluate monitoring conditions
and effluent limitations.
Nothing Compares,.
State of North Carolina I Environmental Quality
1617 Mail Service Center I Raleigh, North Camlina 27699-1617
919-707.9000

Mr. Becker
April 24, 2017
Page 2 of 2
The Division is adding effluent and instream hardness sampling because the NC 2007-2014 Water
Quality Standard (WQS) Triennial Review was approved by the NC Environmental Management
Committee (EMC) on November 13, 2014. The US EPA subsequently approved the WQS revisions on
April 6, 2016 with some exceptions. The NC Division of Water Resources NPDES Permitting Unit is
required to implement the new dissolved metal standards in all permits public noticed after April 6, 2016.
The new standards for most metals include acute standards. Furthermore, the freshwater standards for
several metals are expressed as the dissolved form of the metals, and seven metals have hardness -
dependent equations. As a result, the NPDES Permitting Unit will need site -specific effluent hardness
data and instream hardness data, upstream of the discharge, for each facility monitoring these metals in
order to calculate permit limitations. Effluent hardness and instream hardness sampling, upstream of the
discharge, has been added to this permit at a monitoring frequency of quarterly. See Section A. (L) and
A. (5.) Effluent Limitations and Monitoring Requirements.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable, you have the right to an adjudicatory hearing, upon written request submitted within thirty
(30) days after receiving this letter. Your request must take the form of a written petition conforming to
Chapter 150B of North Carolina General Statutes, and you must file it with the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such a demand is
made, this permit shall remain final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Resources or any
other Federal, State, or Local governmental permits that may be required.
If you have questions, or if we can be of further service, please contact Derek Denard at
[[e-mail]] or call [phone].
Resp fully,
_ \
S. Jay Zimmerman, Director
Division of Water Resources, NCDEQ
Enclosure: NPDES Permit NC0063860 (Issuance Final)
hc: Central Files
NPDES Program Files
MRO Files/ Attn: Corey Basinger
ec: Aquatic Toxicology Branch / Susan Meadows [[e-mail]] [draft permit, Fact Sheet]
Richard Farmer [[e-mail]] [draft pertnit, Fact Sheet]
Shannon Becker, Aqua North Carolina, Inc. [[e-mail]]
Laurie Ison, Aqua North Carolina, Inc. [[e-mail]]
Michael A. Melton, Aqua Carolina, Inc. [[e-mail]]

NPDES Permit NCO063860
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
PDES)
In compliance with the provision 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,
Aqua North Carolina, Inc.
is hereby authorized to discharge wastewater from a facility located at the
Harbor Estates WWTP
Pine Harbor Rd (NCSR 1113), Charlotte 28278
Mecklenburg County
to receiving waters designated as the Catawba River (Lake Wylie) in the Catawba River Basin
in accordance with effluent limits, monitoring requirements, and other conditions set forth in Parts I. II,
III and IV hereof.
This permit shall become effective Julie 1, 2017.
This permit and authorization to discharge shall expire at midnight on Julie 30, 2020.
Signed this day Apri124, 2017.
S.WZimmerman, P.G.; Direc
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 10

NPDES Permit NCO063 860
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES permits issued to this facility, whether for operation or discharge are hereby revoked. As
of this permit 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 included herein.
Aqua North Carolina, Inc.
is hereby authorized to:
1. Continue to operate an existing 0.0416 MGD extended aeration wastewater treatment system with
the following components:
• bar screen
• flow equalization basin
• flow Splitter
• dual aeration basins
• secondary Clarifier
• chlorine contact basin
• tablet chlorination
• tablet dechlorination chamber with aeration
• sludge holding tank
• effluent pump station
• effluent Flow Recording Meter
• standby Power Generator
• filter backwash from ion exchange technology water supply well treatment systems
introduced into the equalization basin by tanker truck from the following water treatment
systems:
o Fleetwood Acres
o Old South Lane
located in Pine Harbor at Harbor Estates on the southside of Pine Harbor Rd (NCSR 1113) in
Mecklenburg County,
2. after receiving an Authorization to Construct from the Division of Water Resources, construct and
after submittal of an Engineers Certification, to operate a wastewater treatment system not to
exceed 0.075 MGD, and
3. discharge from said treatment works at the location specified on the attached map into the Catawba
River (Lake Wylie) [ 11-(123.5)], a waterbody currently classified WS-V; B located within
Subbasin 03-08-34 [HUC: 03050101 ] of the Catawba River Basin.
Page 2 of 10

NPDES Permit NCO063860
PART I
A. (l.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the permit effective date, and lasting until expansion above 0.0416
MGD or until Expiration, the permittee is authorized to discharge treated wastewater from outfall
001. Such discharges shall be limited, monitored and reported' by the Permittee as specified below:
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Sv-�t
Flow (MGD)
50050
0.0416 MGD
Continuous
Recording
Effluent
BOD, 5-day (20°C) (mg/L)
C0310
15.0 mg/L
22.5 mg/L
Weekly
Composite
Effluent
Total Suspended Solids (TSS) (mg/L)
C0530
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
Nitrogen, Ammonia Total (as N) (mg/L)
C0610
4.0 mg/L
20.0 mg/L
Weekly
Composite
Effluent
Fecal Coliform(#/100m1) 2
31616
200/100 ml
400/100 ml
Weekly
Grab
Effluent
Temperature (°C)
00010
Weekly
Grab
Effluent
Dissolved Oxygen (DO) (mg(L)
00300
Daily average not < 5.0 mg/L
Weekly
Grab
Effiuent
pH (su)
00406
> 6.0 and < 9.0 standard units
Weekly
Grab
Effluent
Total Residual Chlorine (TRC)(µg/L) 3
50060
28 µg/L
2 / week
Grab
Effluent
Hardness Total as
[CaCO3 or (Ca + Mg)] (mg/L) 4,516
00900
Monitor & Report
Quarterly
Composite
Effluent
Hardness —Total as
[CaCO3 or (Ca + Mg)] (mg/L) 526,7
00900
Monitor & Report
Quarterly
Grab
Upstream
Total Copper (mg/L) 41,596
01042
7.88 µg/L
10.47 µg/L
Quarterly
Composite
Effluent
Total Fluoride (mg/L) 495,6
00951
1,800 µg/L
1,800 µg/L
Quarterly
Composite
Effluent
Total Chloride (mg/L) 49596
00940
230 µg/L
250 µg/L
Quarterly
Composite
Effluent
Total Zinc (mg/L) 41596
01092
125.7 µg/L
1125.7 µg/L
Quarterly
Composite
Effluent
Total Phosphorus (TP) (mg/L)
C0665
Monitor & Report
Quarterly
Composite
Effluent
Total Nitrogen (TN) (mg/L)8
C0600
Monitor & Report
Quarterly
Composite
Effluent
Combined radium-226 and radium-228 (pCi/L) 51,9
11503
5 pCi/L (annual average)
Quarterly.
Grab
Effluent
Alpha emitters, excluding radon and
uranium (pCi/L) 519
82077
15 pCi/L (annual average)
Quarterly
Grab
Effluent
Beta emitters, excluding potassium-40 and other
naturally occurring radionuclides (pCi/L) 5,9
03520
50 pCi/L (annual average)
Quarterly
Grab
Effluent
Strontium-90 (pCi/L) 599
13501
30 µg//L (weekly average)
Quarterly
Grab
Effluent
Tritium (pCi/L) 5,9
82126
20,000 pCi/L
annual average)
Quarterly
Grab
Effluent
Uranium (µg/L) 5,10
22708
30 µg//L (weekly average)
Quarterly
Grab
Effluent
Chronic WET Testing 11
TGP3B
Quarterly
Grab
Effluent
Footnotes:
1. Starting on the effective date of this permit modification, begin submitting Discharge Monitoring Reports
electronically using NC DWR's eDMR application system. See Condition A. (7.).
Page 3 of 10

NPDES Permit NCO063860
2. Fecal Coliform shall be calculated using the geometric mean, according to the procedure detailed in Part IL
Section A.
3. The Division shall consider all effluent TRC values reported below 50 µg/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 µg/L.
4. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals
(copper and zinc).
5. All quarterly samples shall be taken 72 to 80 hours after the introduction of offsite wastewater into the
equalization tank.
6. After securing a minimum of 12 sample analyses (sampling no more frequently than 2/month), the
Permittee may submit a written request for the Division to reevaluate monitoring conditions and effluent
limitations.
7. The Permittee shall sample instream hardness, upstream of the facility's discharge. The sample shall be
representative of the hardness in the receiving stream.
8. For a given wastewater sample, TN = TKN + (NO2-N + NO3 N), where TN is Total Nitrogen and TKN is
Total Kj eldahl Nitrogen, and (NO2 N + NO3 N) is Nitrite/Nitrate Nitrogen.
9. If the quarterly value exceeds 4 times the annual average limit, then (a) the sampling frequency shall
increase to monthly and (b) a written notification shall be sent to the Water Quality Permitting Section and
the Mooresville Regional Office.
10. A quarterly value can be determined from one quarterly sample or it can be determined from the average of
multiple samples taken in a period not to exceed 7 consecutive days during the quarter.
11. Chronic Toxicity (Ceriodaphnia dubia) 7-day pass/fail test at 90% in January, April, July and October [See
A. (6.)].
Conditions:
• All samples collected should be from a representative discharge event.
• There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (2.) PHASED CONSTRUCTION CONDITION [G.S. 143-215.1(b)]
If this facility is built in phases, plans and specifications for the next phase shall be submitted when the
flow to the existing units reaches 80% of the design capacity of the facilities on line. At no time may
the flow tributary to the facility exceed the design capacity of the existing units.
A. (3.) ENGINEERING ALTERNATIVES ANALYSIS [I 5A NCAC 02H .0105]
The permittee is required to submit an engineering analysis showing no other alternative than to
discharge wastewater, prior to expansion above 0.0416 MGD, in accordance with the Lake Wylie
Management Plan.
A. (4.) PERMIT RE -OPENER [G.S. 143-215.1(b)]
The Division of Water Resources may reopen this permit to increase monitoring, add additional
parameters of concern, and/or implement additional limits should effluent data or surface water data
indicate potential impacts, or should further information on radiological components become available.
Page 4 of 10

NPDES Permit NCO063860
A. (5.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[I 5A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning upon expansion to 0.075 MGD and lasting until Expiration, the
permittee is authorized to discharge treated wastewater from outfall 001. Such discharges shall be
limited, monitored and reported' by the Permittee as specified below:
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Y•L�+6'r4+'!,a(jy41.%/�
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'Kyi' 4
Flow (MGD)
50050
0.075 MGD
Continuous
Recording
Effluent
BOD, 5-day (20°C) (mg/L)
C0310
15.0 mg/L
22.5 mg/L
Weekly
Composite
Effluent
Total Suspended Solids (TSS) (mg/L)
C0530
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
Nitrogen, Ammonia Total (as N) (mg/L)
C0610
4.0 mg/L
20.0 mg/L
Weekly
Composite
Effluent
Fecal Coliform (#/100m1)2
31616
200/100 ml
400/100 ml
Weekly
Grab
Effluent
Temperature (°C)
00010
i
Weekly
Grab
Effluent
Dissolved Oxygen (DO) (mg/L)
00300
Daily average not < 5.0 mg/L
Weekly
Grab
Effluent
pH (su)
00400
> 6.0 and < 9.0 standard units
Weekly
Grab
Effluent
Total Residual Chlorine (TRC)(µg/L)3
50060
28 µg/L
2 / week
Grab
Effluent
Hardness Total as
405,6
00900
Monitor & Report
Quarterly
Composite
Effluent
[CaCO3 or (Ca + Mg)] (mg/L)
Hardness —Total as
5,6,7
00900
Monitor & Report
Quarterly
Grab
Upstream
[CaCO3 or (Ca + Mg)] (mg/L)
Total Copper (mg/L) 495,6
01042
7.88 µg/L
10.47 µg/L
Quarterly
Composite
Effluent
Total Fluoride (mg/L) 4,596
00951
1,800 µg/L
1,800 µg/L
Quarterly
Composite
Effluent
Total Chloride (mg/L) 495,6
00940
230 µg/L
250 µg/L
Quarterly
Composite
Effluent
Total Zinc (mg/L) 4,5,6
01092
125.7 µg/L
125.7 µg/L
Quarterly
Composite
Effluent
Total Phosphorus (TP) (mg/L)
C0665
2.0 mg/L
Quarterly
Composite
Effluent
Total Nitrogen (TN) (mg/L) 8
C0600
Monitor & Report
Quarterly
Composite
Effluent
Combined radium-226 and radium-228 (pCi/L) 5,9
11503
5 pCi/L (annual average)
Quarterly
Grab
Effluent
Alpha emitters, excluding radon and
g g
82077
15 pCi/L (annual average)
Quarterly
Grab
Effluent
uranium (pCi/L) '
Beta emitters, excluding potassium40 and other
5,9
03520
50 pCi/L (annual average)
Quarterly
Grab
Effluent
naturally occurring radionuclides (pCi/L)
Strontium-90 (pCi/L) 5,9
13501
30 µg//L (weekly average)
Quarterly
Grab
Effluent
Tritium (pCi/L) 5,9
82126
20,000 pCi/L
annual average)
Quarterly
Grab
Effluent
Uranium (µg/L) 5110
22708
30 µg//L (weekly average)
Quarterly
Grab
Effluent
Chronic WET Testing 11
TGP3B 1
11
1
Quarterly
Grab
Effluent
Footnotes:
1. Starting on the effective date of this permit modification, begin submitting Discharge Monitoring
Reports electronically using NC DWR's eDMR application system. See Condition A. (7.).
Page 5 of 10

NPDES Permit NCO063860
2. Fecal Coliform shall be calculated using the geometric mean, according to the procedure detailed in Part H.
Section A.
3. The Division shall consider all effluent TRC values reported below 50 µg/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 µg/L.
4. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals
(copper and zinc).
5. All quarterly samples shall be taken 72 to 80 hours after the introduction of offsite wastewater into the
equalization tank.
6. After securing a minimum of 12 sample analyses (sampling no more frequently than 2/month), the
Permittee may submit a written request for the Division to reevaluate monitoring conditions and effluent
limitations.
7. The Permittee shall sample instream hardness, upstream of the facility's discharge. The sample shall be
representative of the hardness in the receiving stream.
8. For a given wastewater sample, TN = TKN + (NO2 N + NO3 N), where TN is Total Nitrogen and TKN is
Total Kjeldahl Nitrogen, and (NO2 N + NO3 N) is Nitrite/Nitrate Nitrogen.
9. If the quarterly value exceeds 4 times the annual average limit, then (a) the sampling frequency shall
increase to monthly and (b) a written notification shall be sent to the Water Quality Permitting Section and
the Mooresville Regional Office.
10. A quarterly value can be determined from one quarterly sample or it can be determined from the average of
multiple samples taken in a period not to exceed 7 consecutive days during the quarter.
11. Chronic Toxicity (Ceriodaphnia dubia) 7-day pass/fail test at 90% in January, April, July and October [See
A. (6.)].
Conditions:
• All samples collected should be from a representative discharge event.
• There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 6 of 10

NPDES Permit NCO063860
A. (6.) CHRONIC TOXICITY PASS/FAIL MONITORING ONLY (QUARTERLY)
[I 5A NCAC 02B .0500 et seq.]
The permittee shall conduct guarterlx chronic toxicity tests using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent
versions.
The effluent concentration defined as treatment two in the procedure document is 90%. The testing shall be
performed as a Ceriodaphnia dubia 7-day pass/fail test. The tests will be performed during the months of
January, April, July and October. These months signify the first month of each three month toxicity testing
quarter assigned to the facility. Effluent sampling for this testing must be obtained during representative
effluent discharge and shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DWR Form AT-1 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days
after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed
in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent
toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating
the facility name, permit number, pipe number, county, and the month/year of the report with the notation of
"No Flow" in the comment area of the form. The report shall be submitted to the Water Sciences Section at the
address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately. Upon submission of a valid test, this monthly test requirement will revert to
quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Water Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified
to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls, shall
constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day
of the month following the month of the initial monitoring.
Page 7 of 10

NPDES Permit NCO063860
A. (7.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
program reports. The final 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 11 of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements (Supersedes Section D. (2.) and Section E. (5.) (a)l
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 submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: 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 shall 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 on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
Page 8of10

NPDES Permit NC0063860
• 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. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the time
of each electronic submission. The permittee should use the EPA's website resources to identify
the initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program) that is the designated
entity for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for
each type of electronic submission and for each state. Instructions on how to access and use the
appropriate electronic reporting tool will be available as well. Information on EPA's NPDES
Electronic Reporting Rule is found at: hgp://www2.gpa. ova /compliance/final-national-pollutant-
discharge-elimination-system-npdes-electronic-reporting=rule.
Electronic submissions must start by the dates listed in the "Reporting Requirements" section
above.
3. 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:
hgp://dgg .nc. oov/about/divisions/water-resources/edmr
Page 9 of 10

NPDES Permit NC0063860
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) Nil
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part
U, Section B. (I 1.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (I 1.)(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:
h V:Hdgg.nc.gov/about/divisions/water-resources/edmr
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:
7 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. "
5. Records Retention [Supplements Section D. (6.)]
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 ].
Page 10 of 10

I EMS
Shopton Rd W �.
- e .
Pine Harbor Rd �.
j1. Approximate
! Facility Boundary
Outfall 001
[flows South]
� ' •• f i` t • 1 5(� �(. ice/+ � � ✓•Jf�/
_ • r +r// -"_i 1 `. roc- ;ns lr:" "` // -.._
i � Brio �'�� �• c:£�. 1 � e• (� � _,,,,
Catawba River (Lake Wylie)
flows South]
49
J i _
�"� -� , \ ���� �p nghtO 20T3•Nronal Geog'r phic octery�,-cubed,
Aqua North Carolina, Inc.
Harbor Estates WWTP
Pine Harbor Road (NCSR 113), Charlotte 28278
Receivine Stream: Catawba River (Lake Wylie) Stream Class: WS-V; B
Stream Segment: l l-(123.5) Sub -Basin: 03-08-34
Drainsee Basin: Catawba HUC: 030501011505
Latitude: 35'OT00" Longitude: 81°01'55"
State Grid/USGS Ouad: G14SE / Lake Wylie
Facility
nlg4,,
Location
Scale 1:24,000
Mecklenburg County

DENR / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT
NPDES Permit NCO063860
Derek Denard_ Comnliance & Exnedited Permitting Unit / 919-807-6307 05Anr2017
_ Facility,Infornaton _.
_
Applicant/FacilityName
Aqua North Carolina, Inc.
Harbor Estates WWTP
Applicant Address
202 Mackenan Court, Cary, NC 27511
FacilityAddress
Pine Harbor Rd (NCSR 1113), Charlotte, NC 28278
Pemitted Flow, ;(MGD)
0.0416 MGD
Type of Waste
Discharging 100% domestic < 1MGD
Faeility,:Class:
WW-2
County . -
Mecklenburg
Permit Status
Renewal
Regional
Office
MRO
Stream Characteristics
Receiving .Stream
Catawba River
(Lake Wylie)
Stream Classification
WS-V; B
Stream Segment
l l-(123.5)
Drainage basin
Neuse
Summer 7Q1 U (cfs)
0
Subbasin :: -.
03-08-34
Winter 7Q10 (cfs)
0
Use Support
Impaired: fish tissue
for PCB & Hg
34Q2 (cfs)
0
303(d) Listed
Average Flow (cfs) _
80
.State Grid ,
D25SW
IWC %o)
100%
-USES Topo Quad
Lake Wylie, SUNC
Facility Summary
This facility is a minor facility (flow <1 MGD) that receives 100% domestic waste. The design capacity of
the treatment system is 0.0416 MGD. The facility consists of the following wastewater treatment units:
• bar screen
• flow equalization basin
• flow Splitter
• dual aeration basins
• secondary Clarifier
• chlorine contact basin
• tablet chlorination
• tablet dechlorination chamber with aeration
• sludge holding tank
• effluent pump station
• effluent Flow Recording Meter
• standby Power Generator
• filter backwash from an ion exchange technology water supply well system treatment system
which is introduced into the equalization basin by tanker truck from the following water
treatment systems:
o Fleetwood Acres well system
o Old South Lane well system
Fact Sheet
Pcnnit Modification 2017 -- NPDES Pennit NCO063860
Page i

Permit Conditions: The permit includes a condition [Part I, Section A. (2.)] for phased construction when
flow reaches 80% design capacity. and a condition. At no time may the flow tributary to the facility exceed
the design capacity of the existing units. An engineering alternatives analysis (EAA) is required [Part I,
Section A. (3.)] prior to expansion above 0.0416 MGD in accordance with the Lake Wylie Management
Plan [EPA Approved: 2/5/1996]. The Management plan recommends TP limit of 2.0 mg/L which will be
applied to expansion above 0.075 MGD. After receiving an Authorization to Construct from the Division,
after construction and after submittal of an Engineers Certification this permit also allows operation of a
wastewater treatment system not to exceed 0.075 MGD with effluent limitations and monitoring
requirements in Part I, Section A. (5.). This permit is being modified to include influent from well system
uranium filter backwash introduced into the equalization basin.
Permit Modification Summary: This permit reflects discharge at Outfall 001. Additional monitoring for
well system uranium filter backwash introduced into the equalization basin by tanker truck from Fleet
Acres and Old South Lane well system is included for this modification. Parameters of concern (POCs)
included are for ion exchange technology water treatment plants and potential radiological components:
Radiological POCs — Radiological POCs (see Table 1. below) are added to Part I Section A. (1) and A.
(5) in accordance with the December 5, 2005 memo for Disposal Wastewater Associated with Private
Water Supply Wells (with potential radiology components). Narrative Standards for Radiological POCs
are found at 15A NCAC 02B .0211 (17). Maximum contaminant level (MCL) for these Radiological
POCs are applied as permit limits without benefit of dilution in the receiving stream. The MCL of 30
µg//L for Uranium is based on EPA Federal Criteria [40 CFR 141.66]. For more information on federal
guidance and rules see EPA 816-F-01-003 and 40 CFR Parts 9, 141, and 142.
Table 1: Radiological POCs
EFFLUENT
MONITORING
CHARACTERISTICS
LDHTS
REQTJIREMENTS
Monthly
Daily
Measurement
Sample
Sample
[Parameter Codes]
Avera a
Maximum
Fr e uenc
a
Location
Combined radium-226 and radium-228 (pCi/L)192
11503
5 pCi/L (annual average)
Quarterly
Grab
Effluent
Alpha emitters, excluding radon and
12
82077
15 pCi/L (annual average)
Quarterly
Grab
Effluent
uranium (pCi/L) '
Beta emitters, excluding potassium-40 and other
1,2
03520
50 pCi/L (annual average)
Quarterly
Grab
Effluent
naturally occurring radionuclides (pCi/L)
Strontium-90 (pCi/L)192
13501
30 µg//L (weekly average)
Quarterly
Grab
Effluent
Tritium (pCi/L)192
82126
20,000 pCi/L
(annual average)
Quarterly
Grab
Effluent
Uranium (µg/L)193
22708
30 µg//L (weekly average)
Quarterly
Grab
Effluent
Footnotes:
1. All quarterly samples shall be taken 72 to 80 hours after the introduction of offsite wastewater into
the equalization tank.
2. If the quarterly value exceeds 4 times the annual average limit, then (a) the sampling frequency
shall increase to monthly and (b) a written notification shall be sent to the Water Quality Permitting
Section and the Mooresville Regional Office.
3. A quarterly value can be determined from one quarterly sample or it can be determined from the
average of multiple samples taken in a period not to exceed 7 consecutive days during the quarter.
Fact Sheet
Permit Modification 2017 -- NPDES Permit NC0063b60
Page 2

Water Treatment Plant (WTP) Permitting Strategy — In accordance with the current WTP strategy
(10/14/2009), parameters (see Table 2 below) are added with limitations to Part I Section A. (1) and
A. (5). The WTP strategy also includes adding whole effluent toxicity (WET) testing. The limitations
as listed Part I Section A. (1) and A. (5) are based on implementation of dissolved metals standards
for freshwater. The additional WTP strategy parameters Turbidity, Salinity and Conductivity that are
not already being monitored at the Harbor Estates W WTP were not included for this permit
modification because of the small volume and episodic duration of the filter backwash introduction.
POCs related to Aquatic Toxicity monitoring were included.
Table 2: Water Treatment Plant POCs for Ion Exchange Technology
EFFLUENT
MONITORING
CHARACTERISTICS
LIMITS
REQUIREMENTS
Monthly
Daily
Measurementl
Sample
I Sample
[Parameter Codes]
Average
Maximum
Frequency
Type
ILocation
Total Hardness (mg/L)1,2,3
00900
Monitoring & Report
Quarterly
Composite
Effluent
Total Hardness (mg/L)1,2,4
00900
Monitoriag & Report
Quarterly
Grab
Upstream
Total Copper (mg/L) 1,2,3
01042
7.88 µg/L
10.47 µg/L
Quarterly
Composite
Effluent
Total Fluoride OWL) 1,2,3
00951
1,800 µg/L
1,800 µg/L
Quarterly
Composite
Effluent
Total Chloride (mg/L)1'2'3
00940
Quarterly
Composite
Effluent
Total Zinc (mg L) 1,2,3
01092
125.7 µg/L
125.7 µg/L
Quarterly
Composite
Effluent
Chronic WET Testing 5
TGP3B
I Quarterly
I Grab
Effluent
Footnotes: C"41 ! ;rjul,
1. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent
metals (copper and zinc).
2. All quarterly samples shall be taken 72 to 80 hours after the introduction of offsite wastewater into
the equalization tank.
3. After securing a minimum of 12 sample analyses (sampling no more frequently than 2/month), the
Permittee may submit a written request for the Division to reevaluate monitoring conditions and
effluent limitations.
4. The Permittee shall sample instream hardness, upstream of the facility's discharge. The sample
shall be representative of the hardness in the receiving stream.
5. Chronic Toxicity (Ceriodaphnia dubia) 7-day pass/fail test at 90% in January, April, July and
October [See A. (6.)].
Fact Sheet
Pennit Modification 2017 -- NPDES Permit N00063860
Page 3

NPDES Implementation of Instream Dissolved Metals Standards - Freshwater Standards
The NC 2007-2015 Water Quality Standard (WQS) Triennial Review was approved by the NC
Environmental Management Commission (EMC) on November 13, 2014. The US EPA subsequently
approved the WQS revisions on April 6, 2016, with some exceptions. Therefore, metal limits in draft
permits out to public notice after April 6, 2016 must be calculated to protect the new standards - as
approved.
Table 3. NC Dissolved Metals Water uality Standards/A vatic Life Protection
Parameter
Acute FW, µg/I
(Dissolved)
Chronic FW, µg/I
(Dissolved)
Acute SW, µg/I
(Dissolved)
Chronic SW, µg/I
(Dissolved)
Arsenic
340
150
69
36
Beryllium
65
6.5
---
---
Cadmium
Calculation
Calculation
40
8.8
Chromium III
Calculation
Calculation
Chromium VI
16
11
1100
50
Copper
Calculation
Calculation
4.8
3.1
Lead
Calculation
Calculation
210
8.1
Nickel
Calculation
Calculation
74
8.2
Silver
Calculation
0.06
1.9
0.1
Zinc
Calculation
I Calculation
90
81
Table 1 Notes:
1. FW= Freshwater, SW= Saltwater
2. _c�ulioi = Hardness dependent standard
3. Only the aquatic life standards listed above are expressed in dissolved form. Aquatic life standards
for Mercury and selenium are still expressed as Total Recoverable Metals due to bioaccumulative
concerns (as are all human health standards for all metals). It is still necessary to evaluate total
recoverable aquatic life and human health standards listed in 15A NCAC 2B.0200 (e.g., arsenic at
10 µg/1 for human health protection; cyanide at 5 µg/L and fluoride at 1.8 mg/L for aquatic life
protection).
Table 3. Dissolved Freshwater Standards for Hardness -Dependent Metals
The Water Effects Ratio (WER) is equal to one unless determined otherwise under 15A
NCAC 02B .0211 Subparagraph (11)(d)
Metal
NC Dissolved Standard, µg/I
Cadmium, Acute
WER*{1.136672-[In hardness](0.041838)) • e^{0.9151 [in hardness]-3.1485)
Cadmium, Acute Trout waters
WER*{1.136672-[In hardness](0.041838)) • e^(0.9151[In hardness]-3.6236)
Cadmium, Chronic
WER* (1. 10 1672-[In hardness](0.041838)) • e^(0.7998[in hardness]-4.445I)
Chromium III, Acute
WER*0.316 • e^(0.8190[ln hardness]+3.7256)
Chromium III, Chronic
WER*0.860 • e^(0.8190[In hardness]+0.6848)
Copper, Acute
WER*0.960 • e^{0.9422[In hardness]-1.7001
Copper, Chronic
WER*0.960 • e^{0.8545[In hardness]-1.702)
Fact Sheet
Pennit Modification 2017 -- NPDES Pennit NCO063860
Page 4

Lead, Acute
WER*{1.46203-[ln hardness](0.145712)). • e^(1.273[ln hardness]-1.460)
Lead, Chronic
WER*{1.46203-[In hardness](0.145712)) • e^(1.273[In hardness]-4.705)
Nickel, Acute
WER*0.998 - e^{0.8460[ln hardness]+2.255)
Nickel, Chronic
WER*0.997 - e^(0.8460[ln hardness]+0.0584)
Silver, Acute
WER*0.85 • e^(1.72[ln hardness]-6.59)
Silver, Chronic
Not applicable
Zinc, Acute
WER*0.978 - e^(0.8473[ln hardness]+0.884)
Zinc, Chronic
WER*0.986 - e^{0.8473[ln hardness]+0.884)
General Information on the Reasonable Potential Analysis (RPA)
The RPA process itself did not change as the result of the new metals standards. However, application of
the dissolved and hardness -dependent standards requires additional consideration in order to establish the
numeric standard for each metal of concern of each individual discharge.
The hardness -based standards require some knowledge of the effluent and instream (upstream) hardness and
so must be calculated case -by -case for each discharge.
Metals limits must be expressed as `total recoverable' metals in accordance with 40 CFR 122.45(c). The
discharge -specific standards must be converted to the equivalent total values for use in the RPA
calculations. We will generally rely on default translator values developed for each metal (more on that
below), but it is also possible to consider case -specific translators developed in accordance with established
methodology.
RPA Permitting Guidance/WQBELs for Hardness -Dependent Metals - Freshwater
The RPA is designed to predict the maximum likely effluent concentrations for each metal of concern,
based on recent effluent data, and calculate the allowable effluent concentrations, based on applicable
standards and the critical low -flow values for the receiving stream.
If the maximum predicted value is greater than the maximum allowed value (chronic or acute), the
discharge has reasonable potential to exceed the standard, which warrants a permit limit in most cases. If
monitoring for a particular pollutant indicates that the pollutant is not present (i.e. consistently below
detection level), then the Division may remove the monitoring requirement in the reissued permit.
1. To perform a RPA on the Freshwater hardness -dependent metals the Permit Writer compiles the
following information:
• Critical low flow of the receiving stream, 7Q 10 (the spreadsheet automatically calculates
the 1 Q 10 using the formula 1 Q 10 = 0.843 (s7Q 10, cfs) 0.993
• Effluent hardness and upstream hardness, site -specific data is preferred
• Permitted flow
• Receiving stream classification
2. In order to establish the numeric standard for each hardness -dependent metal of concern and for
each individual discharge, the Permit Writer must first determine what effluent and instream
(upstream) hardness values to use in the equations.
Fact Sheet
Permit Modification 2017 -- NPDES Pen -nit NCO063860
Page 5

The permit writer reviews DMR's, Effluent Pollutant Scans, and Toxicity Test results for any
hardness data and contacts the Permittee to see if any additional data is available for instream
hardness values, upstream of the discharge.
If no hardness data is available, the permit writer may choose to do an initial evaluation using a
default hardness of 25 mg/L (CaCO3 or (Ca + Mg)). Minimum and maximum limits on the
hardness value used for water quality calculations are 25 mg/L and 400 mg/L, respectively.
If the use of a default hardness value results in a hardness -dependent metal showing reasonable
potential, the permit writer contacts the Permittee and requests 5 site -specific effluent and upstream
hardness samples over a period of one week. The RPA is rerun using the new data.
The overall hardness value used in the water quality calculations is calculated as follows:
Combined Hardness (chronic)
= (Permitted Flow, cfs *Avg. Effluent Hardness, mg/L)x(s7Q 10, cfs *Avg. Upstream Hardness, mg/L)
(Permitted Flow, cfs + s7Q10, cfs)
The Combined Hardness for acute is the same but the calculation uses the IQ 10 flow.
3. The permit writer converts the numeric standard for each metal of concern to a total recoverable
metal, using the EPA Default Partition Coefficients (DPCs) or site -specific translators, if any have
been developed using federally approved methodology.
EPA default partition coefficients or the "Fraction Dissolved" converts the value for
dissolved metal at laboratory conditions to total recoverable metal at in -stream ambient
conditions. This factor is calculated using the linear partition coefficients found in The
Metals Translator. Guidance for Calculating a Total Recoverable Permit Limit from a
Dissolved Criterion (EPA 823-B-96-007, June 1996) and the equation:
Cdiss = 1
Ctotal 1 + { [KPO] [ss(t+a)] [10-6] }
Where:
ss = in -stream suspended solids concentration [mg/1], minimum of 10 mg/L used, and
Kpo and a = constants that express the equilibrium relationship between dissolved and
adsorbed forms of metals. A list of constants used for each hardness -dependent metal can
also be found in the RPA program under a sheet labeled DPCs.
4. The numeric standard for each metal of concern is divided by the default partition coefficient (or
site -specific translator) to obtain a Total Recoverable Metal at ambient conditions.
In some cases, where an EPA default partition coefficient translator does not exist (ie. silver), the
dissolved numeric standard for each metal of concern is divided by the EPA conversion factor to
obtain a Total Recoverable Metal at ambient conditions. This method presumes that the metal is
dissolved to the same extent as it was during EPA's criteria development for metals. For more
information on conversion factors see the June, 1996 EPA Translator Guidance Document.
Fact Sheet
Pennit Modification 2017 -- NPDES Permit NC0063860
Page 6

5. The RPA spreadsheet uses a mass balance equation to determine the total allowable concentration
(permit limits) for each pollutant using the following equation:
Ca = (s7Q 10 + Qw) (Cwgs) — (s7Q 10) (Cb)
Qw
Where: Ca = allowable effluent concentration (µg/L or mg/L)
Cwqs = NC Water Quality Standard or federal criteria (µg/L or mg/L)
Cb = background concentration: assume zero for all toxicants except NH3* (µg/L or mg/L)
Qw = permitted effluent flow (cfs, match s7Q 10)
s7Q 10 = summer low flow used to protect aquatic life from chronic toxicity and human health
through the consumption of water, fish, and shellfish from noncarcinogens (cfs)
* Discussions are on -going with EPA on how best to address background concentrations
Flows other than s7Q 10 may be incorporated as applicable:
1 Q 10 = used in the equation to protect aquatic life from acute toxicity
QA = used in the equation to protect human health through the consumption of water, fish,
and shellfish from carcinogens
30Q2 = used in the equation to protect aesthetic quality
6. The permit writer enters the most recent 2-3 years of effluent data for each pollutant of concern.
Data entered must have been taken within four and one-half years prior to the date of the permit
application (40 CFR 122.21). The RPA spreadsheet estimates the 95th percentile upper
concentration of each pollutant. The Predicted Max concentrations are compared to the Total
allowable concentrations to determine if a permit limit is necessary. If the predicted max exceeds
the acute or chronic Total allowable concentrations, the discharge is considered to show reasonable
potential to violate the water quality standard, and a permit limit (Total allowable concentration) is
included in the permit in accordance with the U.S. EPA Technical Support Document for Water
Quality -Based Toxics Control published in 1991.
7. When appropriate, permit writers develop facility specific compliance schedules in accordance with
the EPA Headquarters Memo dated May 10, 2007 from James Hanlon to Alexis Strauss on 40 CFR
122.47 Compliance Schedule Requirements.
8. The Total Chromium NC WQS was removed and replaced with trivalent chromium and hexavalent
chromium Water Quality Standards. As a cost savings measure, total chromium data results may be
used as a conservative surrogate in cases where there are no analytical results based on chromium
III or VI. In these cases, the projected maximum concentration (95th %) for total chromium will be
compared against water quality standards for chromium III and chromium VI.
9. Effluent hardness sampling and instream hardness sampling, upstream of the discharge, are inserted
into all permits with facilities monitoring for hardness -dependent metals to ensure the accuracy of
the permit limits and to build a more robust hardness dataset.
Fact Sheet
Pennit Modification 2017 -- NPDES Pennit NCO063860
Page 7

10. Hardness and flow values used in the Reasonable Potential Analysis for this permit included:
Parameter
Value
Comments (Data Source)
Average Effluent Hardness (mg/L)
15.68
October 2016 (Harbor Estates -
[Total as, CaM or (Ca+Mg)]
Effluent)
Average Upstream Hardness (mg/L)
14.53
October 2016 (Harbor Estates -
[Total as, CaCO3 or (Ca+Mg)]
Upstream)
7Q10 summer (cfs)
0
NPDES files - Waste Load Allocation
10/26/90
1Q10 (cfs)
0
RPA calculation
Permitted Flow (MGD)
0.0416
Max Monthly Average
(DMRs/RIMS)
Date: January 24, 2017
Permit Writer: Derek Denard
Fact Sheet
Pennit Modification 2017 -- NPDES Pennit NC0063860
Page 8

Date: 1/24/2017
FACILITY: Harbor Estates W WTP-Aqua North Carolina, Inc.
NPDES PERMIT: NCO063860 Dissolved to Total Metal Calculator
In accordance with Federal Regulations, permit limitations must be written as Total Metals per 40 CFR 122.45(c)
Receiving Receiving
Rec. Stream NPDES Total Suspentled
Combined
Combined
InsVeam InsVeam Effluent
Upstream Hard Avg (ni = 17
EFF Hard Avg (mg/L) = 404 Apply Water Supply Criterion
U EPA
Maximum loxa le Effluent oncenlydtwn
COMMENTS (Identify parameters to PERCS Branch to maintain in facility's LTMP/STMP):
Dissolved Metals
Translators -using
(MAEC) as a Total Metal
PARAMETER
Default Partition
�IamWMatal+Trandalar
Chronic
Acute
Coefficients
Chronic
Acute
u ll
u n
u
u
streams
Cadmium (d)
0,42 2,72
0.252
1.67
10.76
Cd-Trout stream
0,42 1.69
0.252
1.67
6.69
Chromium III (d)(h)
74 565
0.202
363.42
2793.83
Chromium VI (d)
11 16
_
1.000
11.00
16.00
Chromium, Total (t)
N/A
WA
8.9 13.3
0.348
0.184
_ _ 25.54
13.54
38.30
347.35
Copper d)(h)
Lead (d)(h)
2.49 64
Nickel (d)(h)
52
464
0.43_2
119.28'
_
1073.90
_ _
Ni - WS streams (t)
_
25 N/A
0.06
3.18
1.000
Silver (d)(h,acute)
0,06 3.16
Zinc (d)(h) -
117
_
116
_ -- 0.288
406.74 403.44
Be Ilium
6.5
65
1.000
6.5
65
Arsenic (d)
150
340
1.000
150
340
(d) = dissolved metal standard. See ISA NCAC 02B .0211 for more Information.
(h) = hardness -dependent dissolved metal standard. See 15A NCAC 02B.0211 for more information.
(t) = based upon measurement of total recoveable metal. See 1SA NCAC 02B.0211 for more information.
The Human Health standard for Nickel in Water Supply Streams is 25 mg/L which is Total Recoverable metal standard.
The Human Health standard for Arsenic Is 10 M/L which Is Total Recoverable metal standard.
Stream
Stream
SorMa
Hardness
Hardness
Wastewater
Wastewater
Upstream
Hardness
Summer
summer 7010
1010
Flow Limit
Fixed valuE
Chronic
Acute
Concentration
Concentration
Hardness
Avera90
7010 (CFS)
(MGD)
MGD
(MGD]
(mg/y
(mg/y
(mgA)
���)
(A�de)
Average m
I �)
(m�L)
0.0000
0.0000
0.0000
0.0416
10
99.000
99.000
100.00W
L00.0000
17
99

Harbor Estates WWTP-Aqua North Carolina, Inc. _
NCO063860 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw (MOD) = 0.04
W WTP/WTP Class: Will
IQ IOS(cfs)= 0.00
lwc% @ IQIOS = 100
7QIOS(cfs)= 0.00
IWC%@7QIOS= 100
7QIOW(cfs)= 0.00
IWC%@7QIOW= 100
30Q2(cS)= 0.00
IWC%@30Q2= 100
Avg. Stream Flow, QA (cfs) = 80.00
IW%C @ QA = 0.0805
Receiving Stream: Catawba River (Lake Wylie) HUC 030501011505 Stream Class: WS-V; B
Outfall 001
Qw = 0.0416 MGD
COMBINED HARDNESS (ma(L)
Acme = 99 mg/L
Chronic = 99 mg/L
YOU HAVE DESIGNATED THIS RECEIVING STREAM
AS WATER SUPPLY
Effluent Hard: 5 value> 100 mg/L
default 99 mg/L-WS (E0 Hard Avg = 404 mg/L)
PARAMETER
NC STANDARDS OR EPA CRITERIA
W
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
J
O
Chronic Applied
Acute
n N Det. Max Fred Cw Allowable Cw
(1)
a
Standard
Acute: NO WQS
Chlorides
NC
230 FW
mg/L
1 0.7
171
_ -_-_ _ __
Note: n < 9 Default C.V.
Chronic: 230.0
_-_-_-_-_-_-_-_-_-_-___-__
No Data (new Permit, New Waste Stream) -apply
Limited data set
No value> Allowable Cw
Monthly Monitoring with Limits, Pollutant of concern
Acute: 38.30
No Data (new Permit, New Waste Stream) - apply
Copper
NC
25.5442 FW 38.2981
ug/L
1 1 4.24
Monthly Monitoring with Limits, Pollutant of concern
Note: n 59 Default C.V.
Chronic: 25.54
No Data (new Permit, New Waste Stream) -apply
Limited data set
No value> Allowable Cw
Monthly Monitoring with Limits, Pollutant of concem
Acute: NO WQS
Fluoride
NC
IffiID 1'VA'
ug/L
1 I 118.9
Note: n < 9 Default C.V-
_ _
Chronic: 1,800.0
No Data (new Pertnt, New Waste Stream) -apply
Limited dale set
No value> Allowable Cw
Momhly Monitoring with Limits, Pollutant of cancan
Acute: 403.4
No Data (new Permit, New Waste Stream) - apply
Zinc
NC
4n6.7415 1'l\' 40 4414
ug/L
1 1 45.2
Monthly Monitoring with Limits, Pollutant of coacem
Note: n 5 9 Default C.V.
Chronic: 406.7
No Data (new Permit, New Waste Stream) - apply
Limited data set
No value> Allowable Cw
Monthly Monitoring with Limits, Pollutant of concern
Acute: NO WQS
Aluminum
NC
S000 1111
pg/L
1 1 81.02
Note: n < 9 Default C.V.
Chronic: 8000.00
No Data (new Permit, New Waste Stream) - apply
1Amited data set
No value> Allowable Cw
Monthly Monitoring with Limits, Pollutant of concern
NCO063860 9595 Final FW RPA w_upstream avg data column_diss to lotalmatals_nodetects_Ilmheddefautts 2018 713, rya
Page 1 of 1 1/24/2017

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY CHECK WQS
Table 1. Project Information
❑CHECK IF HQW OR ORPd WQS
Facility Name
Harbor Estates WWTP-Aqua North Carolina, Inc.
W W-2
W WTPMITP Class
NPDES Permit
NCO063860
Outfall
001
Flow, Ow (MGD)
0.0416
Receiving Stream
Catawba River (Lake Wylie)
HUC Number
030501011505
Stream Class
Wi B
0.00
[ZAPPly WS Hardness WQC
7010s (cfs)
0.00
7010w (cfs)
0.00
30Q2 (cfs)
80.00
QA (cfs)
1410s (cfs)
_
Effluent Hardness
default 99 mg/L-WS (Eff Hard Avg = 404 ri
Upstream Hardness
. .-. _. _. _. _..-____ __
_ _ _ _ _ _ _ 17 mg/L (Avg) _____..
Combined Hardness Chronic
99 mg/L
Combined Hardness Acute
_______--- _----____I
99 m /L
Data Source(s)
Fleetwood Acres Well System Uraniurn Filter
Backwash Sample Results -collected 01/15/16. See
dilution for W WTP Flow on attached spreadsheet.
[]CHECK TO APPLY MODEL
Follow directions for data entry. In some cases a:
comment menu list the available choices or a
dropdown menu will provide a list you may select,
from. Error message occur if data entry does not
meet input criteria.
Panel
Par02
Pam3
Par04
Par05
Par060
Par07
Permit
Par09
Par10
Part 1
Par12
Par13
Pai
Parts
Parl6
Par17
Paris
Par19
Par20
Par21
Par22
Par23
Par24
Par25
Table 2. Parameters of Concern
Name WQS Type Chronic Waite, Acute PQL Units
Chlorides
Aquatic Life
NC
230
FW
ni
Copper
Aquatic Life
NC
25.5442
FW
38.2981
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Zinc
Aquatic Life
NC
406.7415
FW
403.4414
ug/L
Aluminum
Human Health
NC
8000
HH
pg/L
NCO063860 9595 Final FW RPA w_upstream avg data column_diss to totalmetals_nodetects_limiteddefaults 2016_713, Input
1/24/2017

REASONABLE POTENTIAL ANALYSIS
H1
H2
U"'PASM SPECW-
U.'PASM SPECIAL
Effluent
Hardness
Valnes'then "COPY'
Upstream Hardness
P
VahMWthan "COPY"
. Maximum data
. Maximum data
points = 58
points = w
Date
Data BDL=1/2DL
Results
Date
Data
BDL=112DL
Results
1
10/6/2016
450
450
Std Dev.
43.9318
1
10/6/2016
16
16
SW Dev.
1.8708
2
10/72016
440
440
Mean
404.0000
2
10/7/2016
19
19
Mean
17.0000
3
10/10/2016
400
400
C.V.(default)
0.6000
3
10/10/2016
16
16
C.V.(default)
0.6000
4
10/11/2016
340
340
n
5
4
10/11/2016
15
15
n
5
5
10/12/2016
390
390
10th Per value
360.00 mglL
5
10/12/2016
19
19
10th Per value
15.40 mg/L
6
Average Value
404.00 mg/L
6
Average Value
17.00 mg/L
7
Max. Value
450.D0 mg1L
7
Max. Value
19.00 mg/L
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
NCO063860 9595 Final FW RPA w_upstream avg data column_diss to totalmetals nodetects_limiteddefaults 2016 713, data
- 1 - 1/24/2017

REASONABLE POTENTIAL ANALYSIS
Par05
Pall
Use 'PASTE SPECIAL.
Uae'PASTESPECUU.
Chlorides
Values' then'COPV.
Copper
Val Vea'man'copY••
Maximum data polmh=
. Maximum tlaW
5a
polnLs = 58
Date
Data BDL=1/2DL
Results
Date Data BDL=112DL
Results
1 1/15/2016
0.71 0.71
Sid Dev.
N/A
1 1/15/2016 4.2 4
Sid Dev.
N/A
2
Mean
0.7
2
Mean
4.2367
3
C.V.
0.0000
3
C.V.
0.0000
4
n
1
4
n
1
5
5
6
Mult Factor =
1.0
6
Mult Factor =
1.00
7
Max. Value
0.7 mg/L
7
Max. Value
4.24 ug/L
8
Max. Pred Cw
0.7 mg/L
8
Max. Pred Cw
4.24 ug/L
9
9
10
10
11
it
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
1
58
N00063860 9595 Final FW RPA w_upstream avg data column_diss to totalmetals_nodetects_limiteddetaults 2016_713, data
-2- 1/24/2017

REASONABLE POTENTIAL ANALYSIS
Par13
Par21
Use 'PASTE SPEC
Use 'PASTE SPECIAL
Fluoride
Values'then -COPY'
Zinc
values then^COPY"
. Maximum data
. Mun mum data
points = 58
points = Sa
Date
Data BDL=112DL
Results
Date Data
BDL=112DL
Results
1 1/152016
118.9 118.9
Sid Dev.
N/A
1 1/15/2016
45.2 45.2
Sid Dev.
N/A
2
Mean
118.9255
2
Mean
45.1917
3
C.V.
0.0000
3
C.V.
0.0000
4
n
1
4
n
1
5
5
6
Mult Factor =
1.00
6
Mult Factor =
1.00
7
Max. Value
118.9 ug/L
7
Max. Value
45.2 ug/L
8
Max. Pred Cw
118.9 ug/L
8
Max. Pred Cw
45.2 ug/L
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
NC0063860 9595 Final FIN RPA w_upstream avg data column dim to totalmetals nodelecls_limiteddefaults 2016 713. data
-3- V24/2017

REASONABLE POTENTIAL ANALYSIS
Par22
U»'PASTE SPECIAL
Aluminum
values men 'COPY"
Maximum data
points = 58
Date Data BDL=112DL
Results
1
1/15/2016 81.02 81.02
Std Dev.
N/A
2
Mean
81.0180
3
C.V.
0.0000
4
n
1
5
6
Mult Factor =
1.00
7
Max. Value
81.0 pg/L
8
Max. Fred Cw
81.0 pg/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
NCO063860 9595 Final FW RPA w_upstream avg data column_diss to totalmetals_nodetects_limiteddefaults 2016_713, data
- 4 - 1/24/2017

Minimum Monthly Average Flow (QwwTP)
Proposed Maximum Feed Rate for WTP
wastestream at Fleetwood Acres (QwTp)
Proposed Maximum Feed Rate for WTP
wastestream at Old South Lane (QwTP)
6588.06 gpd 1 0.0065881 MGD 1 24939 L/day
529 gpd
0.000529
MGD
2002
L / day
239 gpd
0.000239
MGD
905
L / day
Note: Concentration of the following parameters are assumed to be zero in the domestic wastewater effluent before
introduction of WTP filter backwash.
Fleetwood Acres Old South Lane Formula:
WTP
Conc. Effluent
WTP Conc. Effluent
Parameter
(Cw p) Conc. (Ceff)
(Cwrp) Conc. (Ceff)
UoM
Aluminum
1090
81.02
ND
µg/L
Zinc
608
45.2
88.2
3.09
µg/L
Copper
57
4.2
ND
µg/L
Fluoride
1600
118.9
2.7
0.09
µg/L
Chloride
1 9.5
0.71
1.4
0.05
1 mg/L
QWTPCWTP + QWWTPCWWTP
Ceff - + W
CWWTP=O

F�t�►+.t; l f {C C 6 PI-7 wrel� �J
Denard, Derek
From:
Melton, Michael A. <[e-mail]>
Sent:
Tuesday, February 28, 2017 1:36 PM
To:
Denard, Derek
Cc:
Thompson, Moses A.; Ison, Laurie T.
Subject:
Harbor Estates Permit Modificaiton
Laurie, I wanted to send this you per our discussion early in case you and I both get busy.
"Derek, I hope all is well with you and your family. Laurie and I have reviewed the draft permit issued January 25, 2017
and have the following comments:
1. Aqua requests that hardness be removed from the draft permit since the backwash of the two WTPs are
exclusively for the removal of uranium and not hardness removal.
2. Since Aqua does not fluoridate at either of its WTPs, we request that the requirement for fluoride testing be
removed.
3. Since Aqua does add zinc to its treatment at the two WTPs, we request that zinc be removed from the draft
permit.
4. Aqua requests that copper testing be removed from the draft permit since the levels show were either ND or <
7.88 ug/L and also believe that copper is not contributed by either of the two water treatment processes."
AQUA
Michael A. Melton
Regional Manager of Compliance
Aqua North Carolina, Inc.
4163 Sinclair Street, Denver, NC 28037
0: 704.489.9404, ext 57238 M:704.507.3315
000

The Charlotte Observer Publishing Co.
Charlotte, NC
North Carolina } ss Affidavit of Publication
Mecklenburg County }
Charlotte Observer
REFERENCE: 145583 NCDENR/DWQ/POINT SOURCE
0002899740 Public Notice North Carolina Environmental
Management Commission/NPDES Unit 1617
Mail Service Center Raleigh, NC 27699-1617
Before the undersigned, a Notary Public of said County and
State, duly authorized to administer oaths affirmations, etc.,
personally appeared, being duly sworn or affirmed according to
law, Cloth depose and say that he/she is a representative of The
Charlotte Observer Publishing Company, a corporation
organized and doing business under the laws of the State of
Delaware, and publishing a newspaper known as The Charlotte
Observer in the city of Charlotte, County of Mecklenburg, and
State of North Carolina and that as such he/she is familiar with
the books, records, files, and business of said Corporation and
by reference to the files of said publication, the attached
advertisement was inserted. The following is correctly copied
from the books and files of the aforesaid Corporation and
Publication.
PUBLISHED ON: 01/28/2017
AD SPACE: 42 LINES
FILED ON: 01/31/2017
NAME:
PUBLIC NOTICE
1617 Mail Service Center
Raleigh, NC 27699-1617
N.11. d Intent to leans a NPDES
Wastewater Permit
TITLE:
DATE:
on
In Testimony hereof I have hereunto set my hand and affixed my seal, the day and year aforesaid.
to I
FEB 0 1 2017
Notary: ''� -A&L-- '��jU�^ My commission Expires:
My Con iission Expires MW 27, 2021

United States Office of Water
Environmental Protection (4606)
Agency
EPA 816-F-01-003
June 2001
V2iEPA
t
Radionuclides Rule:
A Quick Reference Guide
F
Ra ionucI'des Rule
Ferftber07,
v
O01
Vol. 65, No. 236
Purpose
Reducing the exposure to
radionuclides in drinking water
will reduce the risk of cancer.
This rule will also improve
public health protection by
reducing exposure to all
radionuclides.
rule retains the existing
Ls for combined radium-226
radium-228, gross alpha
icle radioactivity, and beta
lCoveredsize
icle and photon activity.
rule regulates uranium for
first time.munity
water systems, alle
categories.
..
Implementation of
Reduced uranium
the Radionuclides
exposure for 620,000
Rule will result in ...
persons, protection from
toxic kidney effects of
uranium, and a reduced
risk of cancer.
Estimated impacts of
Annual compliance costs
the Radionuclides
of $81 million.
Rule include...
Only 795 systems will
have to install treatment.

FA wwt.
For additional information
on the Radionuclides Rule
Call the Safe Drinking Water
Hotline at 1-800-426-4791;
visit the EPA Web site at
www.epa.gov/safewater; or
contact your State drinking
water representative. EPA
will provide radionuclide
training over the next year.
Gross Alpha, Combined Radium-226/228, and
Beta Particle and Photon
Uranium (1)
Radioactivity (1)
Initial Monitoring
Four consecutive quarters of monitoring.
No monitoring required for most CWSs.
Vulnerable CWSs (2) must sample for:
• Gross beta: quarterly samples.
• Tritium and Strontium-90: annual samples.
Reduced Monitoring
If the average of the initial monitoring results for
If the running annual average of the gross
each contaminant is below the detection limit: One
beta particle activity minus the naturally
sample every 9 years.
occurring potassiumA0 activity is less than or
If the average of the initial monitoring results for
equal to 50 pCi/L: One sample every 3 years.
each contaminant is greater than or equal to the
detection limit, but less than or equal to one-half
the MCL: One sample every 6 years.
If the average of the initial monitoring results for
each contaminant is greater than one-half the MCL,
but less than or equal to the MCL: One sample
every 3 years.
Increased Monitoring
A system with an entry point result above the MCL
If gross beta particle activity minus the
must return to quarterly sampling until 4
naturally occurring potassium40 activity
consecutive quarterly samples are below the MCL.
exceeds 50 pCi/L, the system must:
• Speciate as required by the State.
• Sample at the initial monitoring frequency.
(1) All samples must be collected at each entry point to the distribution system.
(2) The rule also contains requirements for CWSs using waters contaminated by effluents from nuclear facilities.
Grandfathering of
When allowed by the State, data collected between June, 2000 and December 8, 2003 may be used
to satisfy the initial monitoring requirements if samples have been collected from:
• Each entry point to the distribution system (EPTDS).
• . The distribution system, provided the system has a single EPTDS.
• The distribution system, provided the State makes a written justification explaining why the
sample is representative of all EPTDS.
Applicability of the Standardized Monitoring Framework to Radionuclides
(Excluding the ©eta Particle and Photon Emitters)
Grandfathered Data
Initial Compliance
Initial Monitoring Results
First Compliance Cycle
Collected betvreen
Monitoring
M00 IM8103
M 2005 2000 200I
2008 2g09...2010 2011 M12 M13 2014 2015...2016
< Detection Limit
> Detector'hat Limit bid 51/2 _ 4- IIIIIIIIIN
Detection
MCL
>1/2 the MCL
cpte
000- >CL 000a000ao
Final Rd. I I I Initial
12MV00
Initial Monitoring Begins
unless State Pernlls the
Use oiG2ndiatltemd Da'
KEY
onesamplingevem.
4 consecutive quarterly samples. Systems war MCL
violations must conafte to take quarterly samples until
4 consecutive samples are at or below the MCL.
When allowed by the State, data collected between
6r00 and 12A8103 may be used as gmndfathemd! data
to satisfy the initial mortaring req. ne.arm

Denard, Derek
From: Ison, Laurie T. <[e-mail]>
Sent: Thursday, November 03, 2016 3:59 PM
To: Denard, Derek
Subject: Harbor Estates Permit Mod data requst
Attachments: Harbor Estates response.pdf
Follow Up Flag: Flag for follow up
Flag Status: Flagged
Derek,
Aqua is mailing the original response to the Request for Additional Information in the application of our permit
modification request for Harbor Estates WWTP to the Raleigh Central Office today. However, I am asking that
you accept this electronic copy of the response and today as the official received by date. If you have any
questions about the request or the data response, please do not hesitate to contact me.
Thank you for your consideration.
AQUA
Laurie Ison
Area ,Manager -Western X
Aqua .NC
704-489-9404EV 57234

AQUA.,
RECEI EDINODEQ/ WR
NOV 2 1 2016
Water Quality
November 2, 2016 Permitting Section
Mr. Jay Zimmerman 1 �� Q d
Division of Water Resources, NCDEQ
1617 Mail Service Center NOV 1 5
Raleigh, NC 27699-1617 2016 J
y u
Re: Request for Additional Information i rJP1"S1O^I OF WATER RESOURCES
NPDES Permit Modification Request p;r•.rc oR'S O F!CE
Harbor Estates WWTP
NPDES Permit No. NCO063860
Mecklenburg County
Dear Mr. Zimmerman:
Aqua North Carolina, Inc. (Aqua) offers the following responses to the above -referenced Request
1. Please provide five (5) days of Total Hardness (CaCO3 or (Ca + Mg)) data for Harbor Estates
WWTP effluent.
Response: Attached Exhibit 1
2. Please calculate and provide the expected discharge concentration for all parameters given in
the application for filter backwash that had detection.
Response: Attached Exhibit 2
3. Please provide the following information to describe each filter backwash source:
a. Type of WTP treatment plant
Response: Ion Exchange
b. Describe the treatment processes for the raw water
Response: Raw water is treated with Sodium Hypochlorite (C12) only
c. Describe the wastewater and the treatment processes for wastewater generated by the
facility
Response: Wastewater is backwashed into a holding tank and hauled by truck to a
wastewater facility. No treatment is added.
202 MacKenan Court Cary, NC 27511 • O: 919.467.8712 • F: 919.460.1788 • AquaArrencaxom

Page Two
Mr. Jay Zimmerman
November 2, 2016
d. Plant design potable flowrate.in MGD and backwash or reject flow in MGD
Response: Old South Lane design flow rate 0.023 MGD; backwash 263 gallons
annually (rate too low to be reported io MGD)
Fleetwood .Acres flow, rate 0.10 MGD; backwash 529 gallons semi-annually (rate too
low to be reported in MGD)
e. List all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged
Response: Sodium Hypochlorite
f. Provide a schematic of flow through the .facility, including flow volumes at all points
in the water treatment process and showing the points of addition for chemicals and
all waste streams
Response: Attached Exhibit 3
If you have. any questions or comments, please do not hesitate to contact Laurie Ison at [phone].
Sincerely,
Moses A. Thompson
Director of Operations
cc: Laurie Ison, Area Manager
Michael Melton, Regional Manager of Compliance
NC DWQ/MRO

s ' ;
Post Office Box 1056 - Granite Falls, North Carolina 28630
Phone [phone] - Fax [phone]
October 25, 2016
Aqua North Carolina
4163 Sinclair Street
Denver, NC 28037
Received Date/Time: 10-12-16 / 14:00
Analysis: Total Hardness in mg/L
Harbor Estates-Eff
10/6/16
14:00
450
Harbor Estates-Eff
10/7/ 16
10:40
440
Harbor Estates-Eff
10/10/16
16:04
400
Harbor Estates-Eff
10/11/16
15:27
340
Harbor Estates-Eff
10/12/16
10:50
390
Harbor Estates -Up
10/7/16
11:33
16
Harbor Estates-U
10/6/16
14:50
19
Harbor Estates -Up
10/ 10/ 16
14:34
16
Harbor Estates -Up
10/ 11 / 16
14:3 5
15
Harbor Estates -Up
10/ 12/ 16
10:3 8
19
Date of Analysis: 10-14-16
Analysis By: Tony Gragg

ANC - Harbor Estates WWTP
NPDES Permit No. NCO063860
Application for Permit Modification
Fleetwood Acres Well System Uranium Filter Backwash
Sample Results
Parameter
Concentration
Units
Aluminum
1090
ug/l
1.09 mg/L
Iron
13300
ug/l
13.3
Zinc
608
ug/l
0.608
Manganese
68
ug/l
0.068
Sodium
18200
ug/l
18.2
Copper
57
ug/1
0.057
TDS
238
mg/1
TSS
100
mg/l
Total nitrogen
2.9
mg/l
Fluoride
1.6
mg/l
Ammonia nitrogen
ND
mg/l
Total Kjeldahl nitrogen
ND
mg/l
11NI",
Nitrogen, NO2 + NO3
2.9
mg/l
Phosphorous
0.32
Mg/l
Chloride
9.5
mg/l
*Gross Alpha
635
PCi/l
9.525
*Gross Beta
6,204
PCi/l
93.06
*Radium-226
1.49
PCi/l
0.02235
*Radium-228
2.83
PCi/l
0.04245
*Strontium-90
0.029
PCi/l
0.00044
*Tritium
-70.7
PCi/l
-1.0605
*Total uranium
214
ug/l
3.21
pH
7.3
SM.
TRC
1.19
mg/l
* conversion factor of 0.015 to convert from pCi/L to mg/L
12 Month Average Effluent FIc
0 013%' MGD
Concentrations
(mg/L)
0.126
1.542
0.070
0.008
2.110
0.007
27.590
11.593
0.336
0.185
0.000
0.000
0.336
0.037
1.101
0.000
1.104
10.788
0.003
0.005
0.000
-0.123
0.372

ANC - Harbor Estates WWTP
NPDES Permit No. NCO063860
Application for Permit Modification
Old South Lane Well System Uranium Filter Backwash
Sample Results
Parameter
Concentration
Units
Aluminum
ND
ug/l
0
Iron
ND
ug/I
0
Manganese
ND
ug/l
0
Copper
ND
ug/I
0
Sodium
9540
ug/I
9.5
Zinc
88.2
ug/I
0.1
TDS
136
mg/l
TSS
ND
mg/l
Total nitrogen
0.28
mg/l
,
Fluoride
2.7
mg/I
Ammonia nitrogen
ND
mgll'
Total Kjeldahl nitrogen
ND
Nitrogen, NO2 + NO3
0.27
mgll
Phosphorous
0.041
mgll
Chloride
1.4
mgll
*Gross Alpha
54.7
pCi/l
0.821
*Gross Beta
13.3
pCi/l
0.200
*Radium-226
0.254
pCi/I
0.004
*Radium-228
0.696
pCi/I
0.010
*Strontium-90
-0.177
pCi/I
-0.003
*Tritium
-78.9
pCi/l
-1.184
*Total uranium
106
ug/I
1.590
pH
7.4
S.U.
TRC
1.05
mg/l
* conversion factor of 0.015 to convert from pCi/L to mg/L
12 Month Average Effluent Flc
0.0139" MGD
Concentrations
(mg/L)
0
0
0
0
1.1
0.0
15.8
0
0.032
0.313
0
0
0.03
0.00
0.16
0.095
0.023
0.000
0.001
0.000
-0.137
0.184

OLD SOUTH LANE WELL #2
OLD SOUTH LANE S/D WA'
GASTON COUNTY, NC
PWS ID: NCO136280
FILTERED EFFLUI
3,000 GAL
HYDROPNEUMATIC
STORAGE
TO DISTRIBUTION
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BRINE T�
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BACKWASH HOLDING TANK
FLEETWOOD ACRES WELL #4
FLEETWOOD ACRES S/D
GASTON COUNTY, NC
PWS ID: NCO136133
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AQUA,
Thomas J. Roberts, President and Chief Operating Officer
0:919.653.5770 • F:919.460.1788 • [e-mail]
April 25, 2016
NC Department of Environmental Quality
Division of Water Resources
Water Quality Permitting Section — NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Application for Permit Modification
Aqua North Carolina, Inc.
Harbor Estates WWTP
NPDES No. NCO063860
Mecklenburg County
Gentlemen:
RECEIVEDINCDEUDWR
MAY 0 2 Z016
Water Quality
Permitting Section
Attached are three (3) copies of the completed application Form D, a location map, a copy of the
sludge management plan and a check for the permit modification application processing fee
($260.00). This letter and attachments are our request to modify the subject permit to allow the
introduction of a maximum of 500 gallons per day of wastewater from several existing community
potable well water treatment systems. The existing well water systems are all owned and operated by
Aqua North Carolina, Inc.
Each of these existing community well water systems has existing uranium removal filter systems. In
the past, the wastewaters derived from the backwashing of these systems have been collected in
existing tanks located on the well sites and periodically removed by a licensed commercial hauler
(tanker truck) for disposal at treatment facilities off site. However, the hauler has advised that he will
no longer be able to continue providing this disposal service. Therefore, Aqua North Carolina, Inc. is
requesting that this NPDES permit be modified to allow the collected uranium filter backwash
wastewater to be transported to the existing Harbor Estates W WTP and introduced into the influent.
The uranium filter backwash wastewater will be brought to the W WTP by tanker truck, offloaded
into a storage tank and fed slowly at a rate of less than one gallon per minute by means of a manually
operated valve, into the W WTP influent. We have included an analysis of the collected uranium
backwash wastewater in Attachment 1 of the application.
202 MacKenan Court Cary, NC 27511 • AquaAmerica.com

Page Two
April 25, 2016
NC Department of Environmental Quality
Harbor Estates WWTP
We appreciate your consideration of this request for modification. If you need any additional
information or assistance, please feel free to contact our engineer, Mr. J. Thurman Horne, P.E.,
Horizon Engineering & Consulting, Inc. (704-788-4455.)
Nmce
Thomas J. Robert
President and Chief Operating Officer
cc: Laurie Ison
J. Thurman Horne
RECEIVEDINCDECIDWR
MAY 0 2 2016
TWater Quality
�,� i Permitting Section

SLUDGE MANAGEMENT PLAN
For
Aqua North Carolina, Inc;.
No sludge will he treated can any wastewater treatment plant ,site operated by
A(lua N.C., Western DivlSloll
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
It�atlr.�E rlaIT.
Unusable (or "dead") sludge will be removed by a cone ract 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., NVestern 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 beep records on the tlLiantity of sludge removed
from each facility, the name cif the contract hauler, and the destination of the
sludge (whether used in another plant or disposed of). The information will he
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 Mooresville Regional Office.
202 MacKenan Court a Cary, North Carolina o 27511 a 919-467-8712

ANC - Harbor Estates WWTP
NPDES Permit No. NCO063860
Application for Permit Modification
Fleetwood Acres Well System Uranium Filter Backwash
Sample Results
Parameter
Concentration
Units
Aluminum
1090
ug/I
I ron
13300
ug/I
Zinc
608
ug/l
Manganese
68
ug/I
Sodium
18200
ug/I
Copper
57
ug/I
TDS
238
mg/I
TSS
100
mg/I
Total nitrogen
2.9
mg/I
Fluoride
1.6
mg/I
Ammonia nitrogen
ND
mg/I
Total Kjeldahl nitrogen
ND
mg/I
Nitrogen, NO2 + NO3
2.9
mg/I
Phosphorous
0.32
mg/I
Chloride
9.5
mg/I
Gross Alpha
635
PDA
Gross Beta
6,204
PDA
Radium-226
1.49
pCi/I
Radium-228
2.83
pCi/I
Strontium-90
0.029
pCi/I
Tritium
-70.7
pCi/l
Total uranium
214
ug/I
pH
7.3
S.U.
TRC
1.19
mg/l