NC0086592_Draft Permit_20180919

ROIL COOPER
frovemor
MICHAEL S. REGAIN
S-1wry
LINDA CULPEPPER
inferfm Director
Tony Konsul, Regional Manager
Carolina Water Service, Inc. of NC
PO Box 240908
Charlotte, North Carolina 28224-0908
Dear Mr. Konsul:
NORTH CAROLINA
Environmental Quality
September 19, 2018
Subject: Review of DRAFT NPDES Permit NCO086592
The Point - Well #1 WTP, Class PC-1
NCSR 1100, Mooresville
Iredell County
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.
The Division has considered your Engineering Alternatives Analysis (EAA) submitted with
your application to renew, in compliance with the previous permit. The EAA presents present -
value costs and rationale for discharges to a publicly owned treatment works (POTW), land -
based disposal, surface irrigation, reuse, and discharge to surface -waters of the State. DWR
concurs that a discharge to surface waters is the best viable disposal alternative based on cost.
Changes to the Previous Permit
Consistent with DWR/CWS discussions by phone during a pre -draft review (June 22,
2018), Special Condition A. (3.) details permit limits and compliance deadlines as:
a. compliance to metals limits shall begin on -or -before the
expiration date of this permit.
b. compliance to Total Chloride limits begins on -or -before
September 30, 2021.
2. This renewal adds permit limits for Total Chloride, Total Lead; Total Copper, and
Total Zinc [see section A. (1.)], based on reasonable potential to exceed respective
D E 0
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617 — 919.707.9000

Tony Konsul, Regional Manager
Carolina Water Service, Inc.
Draft Permit Review
19Sep2018
Page 2
surface water -quality standards in a waterbody classified WS-IV; B; CA. Also,
Total Hardness effluent monitoring is required to calculate future compliance for
metals in dissolved fraction. Lastly, DWR discontinued monitoring for Total Iron
[no standard]; no longer a parameter of concern.
3. A Permittee-corrected BIMS database confirms that this facility's average monthly
wasteflow is less than 30,000 gpd. Therefore, a composite sampler is not required.
4. We have updated your facility description and Supplement to Permit Cover Sheet.
DWR may reopen this permit to incorporate new data, as warranted [per Special
Condition A. (3)].
Concurrent with this notification, the Division will solicit public comment on this draft by
publishing a notice in newspapers having circulation in the general Iredell County area, as
required by the NPDES Program. Please provide your written comments, if any, to DENR /
DWR / NPDES Program no later than October 24, 2018 (approximately 30 days after receiving
this document). Your written comments are welcome, but not mandatory.
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 [phone].
Permitting Unit
Enclosure: NPDES Permit N
cc: NPDES Program Files
ec: MRO/SWPS: Ed Watson; Corey Basinger (Regional Supervisor)
ATB: Cindy Moore; Susan Meadows
OCU: Maureen Kinney
DWR/MRO/ PWS, Clinton Cook

Permit NCO086592
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
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 Statu e�215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environment'al Management Commission, and the
Federal Water Pollution Control Act as amended,
Carolina Water Service\(CWS\ , Inc\of NC
is hereby authorized
large wastewate from�a facility located at the
Well # 1 WTP
�io1% '- 0oresville
\dell County
to receiving waters designated asap dnn'amed tributary to Lake Norman (Catawba River) in the
Catawba River Basin in accorda ce,wrth effluent limitations, monitoring requirements, and other
applicable conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective
, 2018.
This permit and authorization to discharge shall expire at midnight on March 31, 2023.
Signed this day
, 2018.
Linda Culpepper, Interim Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NCO086592
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.
Carolina Water Service, Inc. of NC
is hereby authorized to:
1. continue to operate a wastewater treatment system to produ(ce .,otable water (averaging 0.094
MGD) applying sodium -cycle cation -exchange (IE) treatment technology, generating softener
backwash discharge at a monthly average rate of 0.009.1(IGD utilizing
• two (2) each sodium ion -exchange softeners f
• sodium metabisulfite addition rain bxid t]\
• holding tank (discharging to potable Ovate distribution system)
• two (2) each concret steewateru t in1 g b sins [�000-gallon]
• sampling port ands ping to\discharge outfall�
using the chemicals
• Sodium Hypochlorite ((di
• Sodium Chlonde (filter r
• sodium metabisulfite
these facilities located at the'P\dinvWell #1 WTP, NCSR 1100, Mooresville, Iredell County, and
2. discharge from said treatment works via Outfall 001, at the location specified on the attached map,
into an unnamed tributary (UT) to Lake Norman (Catawba River), stream segment 11-(75), a
waterbody currently classified WS-IV; B; CA within subbasin 03-08-32 [HUC: 03050101] of the
Catawba River Basin.
Page 2 of 7

Permit NCO086592
Part I
A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.];
[Grade I Physical -Chemical WPCS [15A NCAC 08G .0302]
During the period beginning on the effective date of this pen -nit and lasting until expiration, the Permittee is
authorized to discharge from Outfall 001. Such discharges shall be limited, monitored, and reported l by the
Permittee as specified below:
EFFLUENT CHARACTERISTICS
(Parameter Code)
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
T Sample
Location 2
Flow 3 (MGD)
50050
2/gonth
Instantaneous
E
Total Residual Chlorine (TRC)
50060
17 µg/O
/� 2/Month
^2�Wbnth
Grab
E
pH (standard units)
00400
Not < 6.0 or > 9.0 s. u.^`
%
Grab
E, D
Total Suspended Solids
00530
30.0 mg/L
45.0 mge
2/M\oxitli�
Grab
E, D
Total Dissolved Solids (mg/L)
70295
Month\\
Grab
E, D
Dissolved Oxygen (mg/L)
00300
Monthly
Grab
E, D
Turbidity [NTq
00070
Monthly
Grab
E
Conductivity (µmhos/cm)
00094
�\
\\\Monthly
Grab
E
Ammonia [NH3 as N] (mg/L)
C06<0 <
/ 11
\ v
Monthly
Grab
E
Total Hardness (mg/L)
CaCO3 , as Ca + Na O
009�
Monthly
Grab
E
Salinity (mg/L) /�
00480,E
`\\j
Monthly
Grab
E
Total Chloride �\�,�
00940
23O\n;45
230 mg/LS
Monthly
Grab
E
Total Copper
\ 01042
7,,8\g ug/L6
10.47 ug/L6
Monthly
Grab
E
Total Lead
1\05,1
�2.� ug/L6
75.5 ug/L6
Monthly
Grab
E
Total Zinc
01092v
i126.7 ug/L6
125.7 ug/L6
Monthly
Grab
E
Total Manganese (ug/L)
01055 v
200 ug/L6
ug/L6
Monthly
Grab
E
Whole Effluent Toxicity 8
TGP3B
Quarterly
Grab
E
Footnotes:
1. The Permittee shall submit monthly Discharge Monitoring Reports (DMRs) electronically using the Division's
eDMR application system [see Condition A. (4.)].
2. E = Effluent; D = Downstream at Lake Norman
3. The Permittee shall record flow discharge -event rates and flow durations in a log book, available for DWR
inspection. Effluent flow shall be measured concurrently with analytical sampling, as may be practicable.
4. TRC applies only if chlorine or chlorine derivatives are used to disinfect. The Division shall consider compliant all
effluent TRC values reported below 50 µg/L. However, the Permittee shall continue to record and submit all values
reported by North -Carolina certified test methods (including field certified), even if these values fall below 50 µg/L.
5. Compliance to the Total Chlorides limit shall begin on -or -before October 31, 2021 [see Permit Reopener A. (3.)];
6. Compliance to metals limits shall begin on -or -before the permit expiration date [see Permit Reopener A. (3.)];
7. Whole Effluent Toxicity (WET) Testing, Chronic, at 90% effluent concentration, 7-day pass/fail using the species
Ceriodaphnia dubia, during the months of March, June, September, and December.
Conditions: All sampling shall accurately represent the chemical and/or physical character of the discharge. The
Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 3 of 7

Permit NCO086592
A. (2.) CHRONIC TOXICITY PASS/FAIL - MONITORING (QUARTERLY)
[15A NCAC 02B .0500 et seq.]
The permittee shall conduct Quarterly 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
March, June, September, and December. 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�wjlf be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using�he parameter code TGP3B.
Additionally, DWR Form AT-1 (original) is to be sent to the following address \
Attention: North Carolina Divi'sionof Water Resources
Water Sciences,ectionCA\atic Toxicology Branch
1621 Mail Service -Center,
Completed Aquatic Toxicity Test Forms shall be filed vltb'the Water Sciences Section no later than 30 days
after the end of the reporting period for` hick the report is made.
Test data shall be complete sand accurate and include all -supporting chemical/physical measurements performed
in association with the toxicity tests, as ell as all dose/response data. Total residual chlorine of the effluent
toxicity sample must be me ' ed and repor�ted�iCchlorine 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 4 of 7

Permit NCO086592
A. (3.) PERMIT REOPENER - TO INCORPORATE NEW TREATMENT OPTIONS
[G. S . 143 -215.3 (a) (2)]
The Division may re -open this permit to incorporate proposed revisions to treatment technologies and
permit limits in accord with scheduled compliance deadlines for dissolved metals and Total Chlorides
in accord with section A. (1.), footnotes 5 and 6] as:
5. Compliance to the Total Chlorides limit shall begin on -or -before October 31, 2021.
6. Compliance to metals limits shall begin on -or -before the permit expiration date.
A. (4.) ELECTRONIC REPORTING OF DISCHARGE ONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge mon\itoring 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
permit (Standard Conditions for NPDES Pe
1.
• Section B. (11.) Si
• Section D. (2.) Ri
• Section D. (6.) Rb
• Section E. (5.) exM
The permittee shall repor ,(
Electronic Discharge Moni
within Part II of this
and Section E. (5.
itoring data electronically using the NC DWR's
(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
Page 5 of 7

Permit NC0086592
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;
Pretreatment Program Annual Reports; and
Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from�\ivision (see "How to Request a
Waiver from Electronic Reporting" section below). �
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9) the permitte6,mdst identify the initial recipient at the time
of each electronic submission. The permittee hould use the EPA's web is to resources to identify
the initial recipient for the electronic submission:
Initial recipient of electronic NPDES in of rm\\ 'fro �NPD S-regulated facilities means the
entity (EPA or the state authorized by EPA to implement the NPDES program) that is the
designated entity for/
electronic NPDES\data [see 40 CFR 127.2(b)].
EPA plans to establi' sh�aweb`s�ite\th\a,�lihk to the appropriate electronic reporting tool for
each type of electronic submission and\or each state. Instructions on how to access and use the
appropriate electronic reporting to,M�will b}e available as well. Information on EPA's NPDES
Electronic Reporting Rul`eis\found at':
httt)s://www.federalreizister. oV/documerAs/2015/10/22/2015-24954/national-nollutant-di scharge-
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.
Page 6 of 7

Permit NC0086592
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
htti):Hdeq.ne.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.)
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part
II, Section B. (I 1.)(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 submittirig'the'
account and login credentials to access the eDMR system. For
Carolina's eDMR system, registering for eDMR and obtaining
the following web page: — \\
4063
Certification. Any person submitting an'electroiuc DM
make the following certification [40 CFR Q 22.22]�.'NO
CERTIFICATION WILL —BE ACCEPTED: —
DMR must obtain an eDMR user
more.knformation on North
an eDMR user account, please visit
the state's eDMR system shall
STATEMENTS OF
7 certify, under penalty of law�\that`thls 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 eval�d t the i `formation submitted. Based on my inquiry of the person or
persons who manage the system,o r hose 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 tore 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 7 of 7

v-
:0
A,
1, r"
v,P.,
Chuckwood Road
of
Outfafl 001
N
Lat: 35* 32', 13"
Long: -80,' 55', 12"
(Flows N)
`j S
N
q
L.-A ;fit ff
6,
�j d
Brawley School Road . . . . . . . . . . . . . . .
Carolina Water Service (CWS), Inc. of NC Facility
The Point — Well# I WTP
Location
State Grid/Ouad: E I 5SW / Lake Norman, N HUC: 03050101 Drainage Basin: Catawba River Basin Stream Segment: 11(75) not toscale
Stream Class: WSJV; B; CA Sub -Basin: 03-08-32
NPDES Permit NC0086
Receiving Stream: UT to Lake Norman (Catawba River)
ATorthiF Iredell County