NC0065749_Draft Permit_20211026

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ELIZABETH S.BISER �
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S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
October 26, 2021
Jacqueline A.Jarrell
Charlotte Water
5100 Brookshire Blvd.
Charlotte,NC 28216 Subject: Draft NPDES Permit NC0065749
Ashe Plantation WWTP
Grade II Biological WPCS
Mecklenburg County
Dear Ms.Jarrell:
The Division has reviewed your request to renew the subject permit.Enclosed with this letter is a copy of the draft
permit for your facility.Please review this draft carefully to ensure your thorough understanding of the
information,conditions,and requirements it contains.
The draft permit includes the following significant changes from the existing permit:
1. Language has been updated in Section A.(1)and Section A. (3)to require electronic submission of
effluent data.Federal regulations require electronic submittal of all discharge monitoring reports(DMRs).
2. The facility grade has been added in Section A.(1).
3. Language for upstream sampling location has been updated in Section A.(1).
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 I).The conditions are the same as in your current permit 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
919-707-3619,or via e-mail at siying.chen(ancdenr.gov.
Sincerely,
Cirl
Siying Chen
Environmental Specialist I
NPDES Compliance and Expedited Permitting
cc: NPDES File[Laserfiche]
Moorseville Regional Office[email]
Operator Certification Program[email]
Mecklenburg County[email]
.�. 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
NORTH GAfpLlnl�D
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o ;\/'" 919.707.9000

Permit NC0065749
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
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,
Charlotte Water
is hereby authorized to discharge wastewater from a facility located at the
Ashe Plantation WWTP
End of Quarters Lane, east of Charlotte
Mecklenburg County
to receiving waters designated as Duck Creek in subbasin 03-07-12 of the Yadkin-Pee Dee River Basin in
accordance with effluent limitations,monitoring requirements, and other conditions set forth in Parts I,II,III and
IV hereof
This permit shall become effective
This permit and authorization to discharge shall expire at midnight on April 30,2026.
If the permittee intends to continue to discharge at the facility beyond the term of this permit,a renewal application
must be submitted no later than November 1, 2025(180 days before the expiration of this permit).
Signed this day
S. Daniel Smith
Director,Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NC0065749
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 included herein.
Charlotte Water
is hereby authorized to:
1. Continue discharging 0.10 MGD of treated domestic wastewater from an extended-aeration
package treatment plant consisting of the following components:
• Influent lift station
• Bar screen
• Equalization basin
• Aeration basin
• Rectangular clarifier
• Tertiary filter
• Ultraviolet disinfection
• Back-up chlorine contact chamber with tablet-type chlorination and dechlorination
• Continuous-recording flow measuring device
• Filter backwash tank
• Post aeration
• Aerobic sludge digester
This facility is located at the Ashe Plantation WWTP, at the end of Quarters Lane east of
Charlotte, in Mecklenburg County.
2. Discharge from said treatment works via Outfall 001, at the location specified on the attached
map into Duck Creek [13-17-18-3], currently classified C, located within subbasin 03-07-12
[HUC: 0304010507] of the Yadkin-Pee Dee River Basin.
Page 2 of 7

Permit NC0065749
Part I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.]
Grade WW-2 Water Pollution Control System [15A NCAC 08G.0302]
Beginning with the permit effective date and lasting until expiration, the Permittee is authorized to
discharge treated domestic wastewater from Outfall 001. Such discharges shall be limited and monitored
by the Permittee as specified below:
EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
Monthly Daily Weekly Measurement Sample Sample
Parameter Code Average Maximum Average Frequency Type Location
Flow 50050 0.10 Continuous Recording Influent or
MGD Effluent
BOD, 5-day, (20°C)—
C0310 5.0 mg/L 7.5 mg/L WeeklyComposite
(April 1 -October 31) g g po to Effluent
BOD, 5-day, (20°C)— C0310 10.0 15.0 mg/L Weekly Composite Effluent
(November 1 -March 31) mg/L
30.0
Total Suspended Solids C0530 mg/L 45.0 mg/L Weekly Composite Effluent
NH3 as N— C0610 0.5 mg/L 2.90 mg/L Weekly Composite Effluent
(April 1 -October 31)
NH3 as N— C0610 0.5 mg/L 7.15 mg/L Weekly Composite Effluent
(November 1 -March 31)
Dissolved Oxygen 3 00300 Weekly Grab Effluent
Fecal Coliform 200/100 400/100
(geometric mean) 31616 mL mL Weekly Grab Effluent
Total Residual Chlorine 4'5 50060 17 pg/L 2/Week Grab Effluent
Temperature 00010 Daily Grab Effluent
pHs 00400 Weekly Grab Effluent
Total Nitrogen
C0600 Quarterly Composite Effluent
(NO2+ NO3+TKN)
Total Phosphorus C0665 Quarterly Composite Effluent
Total Residual Chlorine 5 50060 Weekly Grab Upstream&
Downstream 2
NH3 as N C0610 Weekly Grab Upstream&2
Downstream
pH 00400 Weekly Grab Upstream&
Downstream 2
Temperature 00010 Weekly Grab Upstream&
Downstream 2
Dissolved Oxygen 00300 Weekly Grab Upstream&
Downstream 2
Fecal Coliform 31616 Weekly Grab Upstream &
Downstream 2
Page 3 of 7

Permit NC0065749
Footnotes:
1. The permittee shall submit discharge monitoring data electronically using the Division's eDMR
system [see A. (4)].
2. Upstream=approximately 15 feet above the discharge point. Downstream=approximately 500 feet
below the discharge point.
3. Effluent daily average dissolved oxygen shall not fall below 6.0 mg/L.
4. 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.
5. Total Residual Chlorine monitoring and effluent limit effective only if chlorine compounds are used
for disinfection.
6. pH shall not fall below 6.0 nor exceed 9.0 standard units.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER
THAN TRACE AMOUNTS
A. (2) PERMIT REOPENER CONDITION: AMMONIA TOXICITY & NUTRIENTS
[NCGS 143-215.1 (b)]
This permit may be reopened to impose further controls,pH adjustment.or restrictions upon the discharge
of ammonia to the receiving stream. Endangered species in the Goose Creek watershed exhibit a high
degree of sensitivity to ammonia. Permit modification may be required in order to ensure viable aquatic
habitat with regard to instream ammonia concentrations.
Studies conducted within the Goose Creek watershed demonstrate episodic events of elevated
concentrations of nutrients (nitrogen and phosphorous). High concentrations of nutrients have the
potential to create conditions detrimental to overall water quality and the health of aquatic life. Permit
modification may be required to include monitoring that will help ascertain the impact of the discharge
with respect to instream concentrations of nutrients and to require controls on effluent nutrient
concentrations should the discharge be found to be a significant contributor to elevated nutrient levels
within the receiving stream.
A. (3) ELECTRONIC REPORTING OF MONITORING REPORTS
[NCGS 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.) Reporting
• Section D. (6.) Records Retention
Page 4 of 7

Permit NC0065749
• Section E. (5.) Monitoring Reports
1. Reporting Requirements 1Supersedes Section D. (2.) and Section E. (5.) (all
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.gov/about/divisions/water-resources/edmr.
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
beingphysically located in an area where less than 10 percent of the households
PY Y
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
Raleigh,North Carolina 27699-1617
See "How to Request a Waiver from Electronic Reporting" section below.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
reported via the eDMR system no later than the last calendar day of the month following the
completed reporting period. 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, 2025, 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 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)].
Page 5 of 7

Permit NC0065749
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://wvvw.federalregister.gov/documents/2015/10/22/2015-24954/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:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements (Supplements Section B. (11.) (b)and Supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B.(11.)(a)or by a duly authorized representative of that person as described in Part II,Section
B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting
purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North Carolina's
eDMR system,registering for eDMR and obtaining an eDMR user account,please visit the following
web page:
http://deq.nc.gov/about/divi sions/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:
"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
Page 6 of 7

Permit NC0065749
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. (6.11
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

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NPDES Permit NC0065749 filadi i{6.;�I►�*0.� �1
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Facility Locationamip
Receiving Stream: Duck Creek Stream Class: C scale not shown V�#
Stream Segment: 13-17-18-3 Sub-Basin#: 03-07-12 ���
River Basin:Yadkin Pee-Dee HUC: 0304010507 SCALE 35.177778°, -80.591667° 1
County: Mecklenburg 1:30,000 USGS Quad: Midland