NC0084549_Draft Permit_20200720

ROY COOPER
Govemor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
July 20, 2020
Ms. Jacqueline A Jarrell
Charlotte Water
5200 Brookshire Blvd
Charlotte, NC 28216-3371
Subject: Draft NPDES Permit NCO084549
Franklin WTP
Grade I Physical Chemical WPCS
Mecklenburg County
Dear Ms. Jarrell:
The Division has reviewed your request to renew the subject permit. Please review this draft carefully to
ensure a thorough understanding of the information, conditions, and requirements it contains.
The draft permit includes the following significant changes from the existing permit:
1. The permit map was updated.
2. The facility classification Grade I Physical Chemical was added to the effluent page.
3. Concurrent sampling with WET test samples is no longer required.
4. A permit re -opener Condition A. (5.) has been added due to a toxicity failure in the last two
years.
5. For Outfall 002 the following changes to monitoring have been made:
a. The monitoring frequency for Total Iron was reduced form monthly to quarterly.
b. Added the following conditions:
• Samples shall be taken at the outfall but prior to mixing with the receiving waters.
• There shall be no discharge of floating solids or foam in other than trace amounts.
c. Special Condition A. (4.) for the use of biocides in cooling waters, sumps and drains has been
added. This condition is also found in General Permit NCG500000 for non -contact cooling
water, cooling tower and boiler blowdown, condensate, exempt stormwater, cooling waters
associated with hydroelectric operations, and similar wastewaters.
The NPDES standard conditions (Parts II, III, and IV) that are a part of the permit are not included in
this draft document (cover, map, and Part 1). The conditions are the same as in your current permit
�D_E QJ� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617
NOfiTH CNiIX.INA
wwn 919.707.9000

Ms. Jarrell
July 20, 2020
Page 2 of 2
except that agency and division names have been updated. The latest version is available at
https://bit.ly/2BZ4xxx and can be viewed online or downloaded as a PDF file.
With this notification, the Division will solicit public comment on this draft permit by publishing a
notice in newspapers having circulation in the general Mecklenburg County area, per EPA requirements.
Please provide your comments, if any, to me at the address below no later than 30 days after
receiving this draft permit.
Following the 30-day public comment period, the Division will review all pertinent comments and take
appropriate action prior to issuing a final permit.
If you have questions concerning the draft, please contact me at 919-707-3618, or via e-mail at
[e-mail].
Sincerely,
Derek Denard, Environmental Specialist
NPDES Compliance and Expedited Permitting
Division of Water Resources, NCDEQ
cc: NPDES File
ec: MRO / Corey Basinger [[e-mail]]; Wes Bell [[e-mail]]
WSS/Aquatic Toxicology Branch, Hannah Headrick [[e-mail]]
Wastewater Operator Certification Group ([e-mail])
Charlotte Water / Jacqueline A. Jarrell; [[e-mail]]; John C. Huber [e-mail]];
David M Banick [[e-mail]]; Gabe Sasser [[e-mail]]
Richard Farmer[[e-mail]]

NPDES Permit NCO084549
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NEDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
Charlotte Water
h rized to disc a 'e treated wastewater from a faciIit known as
is hereby auto rg y
Franklin Water Treatment Plant (WTP)
5200 Brookshire Blvd, Charlotte 28216
Mecklenburg County
to receiving waters designated as an unnamed tributary to Stewart Creek, within the Catawba River
Basin, in accordance with effluent limitations, monitoring requirements, and other applicable conditions
set forth in Parts I, II, III; and IV hereof.
The permit shall become effective
This permit and th uthorization to discharge shall expire at midnight on May 31, 2025.
Signed this day
ON
S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

NPDES Permit NCO084549
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked, and as
of this issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and
provisions described herein.
Charlotte W
is hereby authorized to:
1. continue to operate a conventional technology water nt plant [coa n, flocculation, sedimentation,
and filtration] with discharge of wastewaters from lter backwash an entation basins with a
design potable flowrate of 132 MGD and a maxi onthly average waste ischarge of 4.682 MGD,
with water and wastewater treatment consisting o ;
• a raw water intake pump station
• two (2) 250 MG reservoirs
• two raw water pump stations [I Q8 MG, 90 MG]
• four (4) sedimentation module sne (I) 24 MG, three (3 G]
• four (4) filter modules [one (1) 24 MG, three (; MG]
• eight (8) clearwells [one (1) 12 MG, 'four (4) 6 (3) 4
• two high service pump stations [ 128 MGD, 11
• a 1.5 MG elevated storage tank
• two (2) 0.700 MG backwash water lagoo
• two (2) clarifiers [333 kG, 667 kG]
• a 6.7 MGD dechlorination contact chamber
• a 450,000 gallon residuals basin
• two (2) 90,000 gallon sludge thickeners'
• a dewatering facility
• a continuous flow meter
• chemical usage consists of
o alum / aluminum sulfate
o fluoride
o carbon...:_
o lime '114�''
o sodium bisulfite
o liquid linear phosphate
located at the Franklin Water Treatment Plant (WTP), 5200 Brookshire Blvd, Charlotte, Mecklenburg County;
and
2. discharge from said treatment works via Outfall 001; and via Outfall 002 discharge of surface water
runoff, a drain from filtered water reservoirs, raw water sumps pumps discharge (station No. 1) and
generator non -contact cooling water, at a location specified on the attached map, into unnamed tributary
to Stewart Creek [Stream Segment 11-137-1-2], currently a Class C waterbody within Subbasin 03-08-34
[HUC: 030501030101 ] of the Catawba River Basin.
Page 2 of 8

NPDES Permit NCO084549
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (001)
[15A NCAC 02B .0400 et seq., 02B .0500 seq.]
Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge filter backwash via Outfall 001. Such discharges shall be limited
and monitored' by the Permittee as specified below:
EFFLUENT
CHARACTERISTIC
[PARAMETER CODESI
LIMITS
MONITORING REQUIREMENTS 1
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow (MGD)
50050
Monitor & Report
Continuous
Recording
Effluent
Total Suspended Solids (mg/L)
C0530
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
pH (su)
00400
Not < 6.0 or > 9.0
standard units
Weekly
Grab
Effluent
Total Residual Chlorine (µg/L) 2
5006
17 µg/L 2
Weekly
Grab
Effluent
Turbidity (NTU) 3
00070
Report
Weekly
Grab
Effluent
Total Aluminum (µg/L)
01105
nitor Report
Quarterly
Grab
Effluent
Total Manganese (µg/L) jd99NhhW055
Monitor & Report
Quarterly
Grab
Effluent
Total Fluoride (µg/L)
Monitor & Repoi
_ uarterly
Grab
Effluent
Total Phosphorous (TP) (
CO S
Monitor & Report
uarterly
Grab
Effluent
Total Nitrogen (mg/L) 4
C0600
Monitor & Report
Quarterly
Grab
Effluent
Chronic WE'Kesting 5
TGP3B
Monitor & Report
Quarterly
Grab
Effluent
Footno 'a;,
1. The Permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application
system. See Condition A. (7.f:,
2. The Division shall consider TRC effluent values reported below 50 µg/L to be compliant with the
permit. However, the Permittee shall continue to record and submit all values reported by a North
Carolina -certified laboratory method (including field certified), even if these values fall below 50µg/L.
3. The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50 NTU. If the
instream turbidity exceeds 50 NTU due to natural background conditions, the discharge cannot cause turbidity
to increase in the receiving stream.
4. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total
Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
5. Whole Effluent Toxicity (WET) testing - testing of Ceriodaphnia dubia shall be performed as 7-day pass/fail,
monitoring only, test at 90% effluent concentration, during January, April, July and October [See A. (6.)].
Conditions:
• Samples shall be taken at the outfall but prior to mixing with the receiving waters.
• There shall be no discharge of floating solids or foam in other than trace amounts.
Page 3 of 8

NPDES Permit NCO084549
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (002)
[15A NCAC 02B .0400 et seq., 02B .0500 seq.]
Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is required to conduct monthly monitoring of the secondary discharge which consists of
surface water runoff, water from a curtain drain around the filtered water reservoirs, sump pumps in the
raw water pumping station No. 1 and cooling water from a generator via Outfall 002. Such discharges
shall be limited and monitored' by the Permittee as specified belo7
MONITORING REQUIREMENTS I
EFFLUENT
LIMITS
CHARACTERISTIC
[PARAMETER CODESI
Monthly
Daily
Measurement
Sample
Sample
Average
Maximum
Frequency
Type
Location
Flow (gpd)
50050
Monitor & Report
Estimate
Effluent
Temperature (°C)
00010
itor & Report
MoA161
Grab
Effluent
Total Suspended Solids (mg/L)
C0530
30.0
45.0 mg/L
Monthly
rab
Effluent
pH (su)
0 Not < S,0 or > 9.0
Monthly
ab
Effluent
standard units
Total Residual Chlorine (µg/L) 3
500
17 µ 3
Monthly
Grab
Effluent
Oil and Grease m
(mg/L)
EPA 16
SGT-HE 1 20.0 inMonthly
onthly
Grab
Grab
Effluent
Effluent
Turbidity (NTU) 4
00070 Moni rt
Chemical Oxygen Dem
40 & Re
Monthly
Grab
Effluent
COD m
Total Iron (µg/L)
S 1 itor & Report
Quarterly
Grab
Effluent
Footnotes:
1. The ee sha Disc oniton s ectronically using NC DWR's eDMR
ap on system. See tion
2. See O 002 Monitorin ial Co n [see section A. (3.)].
3. Limit and monitoring requirer►1f apply aWchlorine is present in the discharge. The Division
shall consider TRC effluent values reported Wow 50 µg/L to be compliant with the permit. However,
the Permittee shall continue to record and submit all values reported by a North Carolina -certified
laboratory method (including field certified), even if these values fall below 50µg/L.
4. The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50 NTU. If the
instream turbidity exceeds 50 NTU due to natural background conditions, the discharge cannot cause turbidity
to increase in the receiving stream.
Conditions:
• Samples shall be taken at the outfall but prior to mixing with the receiving waters.
• There shall be no discharge of floating solids or foam in other than trace amounts.
Page 4 of 8

NPDES Permit NCO084549
A. (3.) OUTFALL 002 MONITORING — SPECIAL CONDITION
[G.S. 143-215.3(a)(2), G.S. 143-215.66]
As stated in Part A. (2), the Permittee shall monitor Outfall 002 monthly for the duration of this permit. If, after
one year of monthly monitoring, parameters in Part A. (2) are not detected (or after twelve data points have been
collected over no less than a six-month period), the Permittee may request the Division to review Outfall 002
monitoring frequency and requirements. Any change shall be considered a minor permit modification.
A. (4.) USE OF BIOCIDES — SPECIAL CONDITI UTFALL 002
[G.S. 143-215, 143-215.1] �; ff",
The Permittee shall obtain authorization from the Division prior to using any biocide in discharge from that may
be toxic to aquatic life. The Permittee shall notify the Director in writing no later than 90 days prior to using any
biocide not already approved for this facility. The Permittee shall provide such notification by completing a
Biocide Worksheet, Form 101 to include a map indicating the receiving stream and the effluent discharge point.
Concentrations of additives to biocides such as chromium, copper, or zinc shall not exceed applicable water
quality standards or action levels in the receiving stream, as determinedby calculations using the Biocide Work
Sheet, Form 101 and the Supplemental Analysis Worksheet.
A. (5.) PERMIT RE -OPENER: WHOLE EFFLUENT TOXICITY — OUTFALL 001
[G.S. 143-215.1(b)]
Whole Effluent Toxicity monitoring results indicating aquatic toxicity may result in the Division of
Water Resources re -opening this permit or requesting by letter that further action be taken. Additional
metals testing, a toxicity, identification evaluation, a toxicity reduction evaluation, and/or an assessment
of discharge treatment alternatives may be requested.
A. (6.) CHRONIC TOXICITY PASS/FAIL MONITORING (QUARTERLY)
[1 �A 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 Procedatt," 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 duhia 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 TGP313.
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, North Carolina 27699-1621
Or, results can be sent to the email, [e-mail].
Page 5 of 8

NPDES Permit NCO084549
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.
A. (7.) ELECTRONIC REPORTING - DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports. 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 II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)1
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. The eDMR system may be
accessed at: https://deq.nc.,,ov/about/divisions/water-resources/edmr.
Page 6 of 8

NPDES Permit NCO084549
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
following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center 40
Raleigh, North Carolina 27699-1617
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, tllermittee 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.
➢NPDES Electronic Reporting Rule — Phase 2 Extension. EPA is proposing to extend the Phase
2 deadline from December 21, 2020 until at least December 21, 2023. The current compliance
date will be extend a implementation date is extended as a final regulation change in the
federal register.
The permittee may see :Ironic 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 DES 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: https://www.federaire ig ster.gov/documents/2015/10/22/2015-
24954/national-pollutant-discharge-elimination-system-nudes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
Page 7 of 8

NPDES Permit NCO084549
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: http://deg.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements ISupplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)I
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (1 I .)(a) or by a duly authorized representative of that person as described in Part Il,
Section B. (1 I .)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://deg.nc. go v/about/d ivisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.221. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the information,
the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations. "
5. Records Retention [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR
submissions. These records or copies shall be maintained for a period of at least 3 years from the
date of the report. This period may be extended by request of the Director at any time [40 CFR
122.411.
Page 8 of 8

�W�l
W EAp-
1 qr
�� � � '•e"i� � ^, ~ ` �� `� Cam, ' "C
f[flows south]
�. , '� . � ��� ��, .' yr: � :''�� t;•'L
'UT to Stewart Creek
r
' a
-a K/(m
ice•. � ': '•_//
Charlotte Water
Franklin Water 'Treatment Plant (WTP)
5200 Brookshire Blvd, Charlottee NC 28216
Receiving Stream: UT to Stewart Creek Stream Class: C
Stream Segment: 11-137-1-2 Sub -Basin: 03-08-34
Drainage Basin: Catawba HUC: 030501030101
Latitude: 35' 16' 48" Longitude: 80° 53' 09"
State Grid/USGS Oaad: FI5SW / Mountain Island Lake, NC
Stewart Creek
.J .
Facility
Location Not to Scale
North NPDES Permit NCO084549
Scale 1:24,000 Mecklenburg County