NC0026697_Draft Permit_20170627

Water Resources
ENVIRONMENTAL QUALITY
ROY COOPER
Govemoi
MICHAEL S REGAN
Seci elm y
S JAY ZIMMERMAN
June 27, 2017
Mr. Clay Logan
Clay County Water & Sewer District
P.O. Box 838
Hayesville, NC 28904-0838
Subject: Draft NPDES Permit NCO026697
Clay County WWTP
Class WW -2
Clay County
Dear Mr_ Logan:
ill eClol
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:
➢ Section A. (5) has been added to require electronic submission of effluent data. Federal regulations
require electronic submittal of all discharge monitoring reports (DMRs).
➢ Regulatory citations have been added to the permit.
➢ Parameter codes have been added to simplify data entry for your personnel.
Please note that the segment of the Ihwassee River to which your WWTP discharges is listed as an impaired
waterbody on the North Carolina 303(d) Impaired Waters List. Addressing impaired waters is a high
priority with the Division, and instream data will continue to be evaluated. If there is noncompliance with
this permit's effluent limits and stream impairment can be attributed to your facility, then mitigative
measures may be required.
With this notification, the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Clay County area, per EPA requirements. Please provide
your comments, if any, to me 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 the telephone number listed at the bottom of this page, or via e-mail [[e-mail]].
cc: NPDES Unit
Sincerely,
Charles H. Weaver, Jr.
NPDES Unit
State of North Carolina I Environmental Quality J Water Resources
1617 Mail Service Center I Raleigh, NC 27699-1617
919 807 6391 919-807-6389 FAX
https://deq nc.gov/about(divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits

Permit NCO026697
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, the
Clay County Water & Sewer District
is hereby authorized to discharge wastewater from a facility located at the
Clay County WWTP
238 Jarrett Road
Hayesville
Clay County
to receiving waters designated as the Hiwassee River in the Hiwassee 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 August 31, 2022.
Signed this day
- V-
S. Jay Zimmerman, P.G.
Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page Iof8

Permit NCO026697
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.
The Clay County Water & Sewer District is hereby authorized to:
1. Continue to operate an existing 0.3 MGD wastewater treatment facility that includes the following
components:
♦ Bar screen and selector tanks
♦ Twm 30 -horsepower blowers
♦ Twin 150,000 -gallon aeration tanks
♦ Two split clarifiers
♦ Two aerobic digesters
♦ Chlorine disinfection
♦ Dechlorination
♦ Chart recorder and flow meter
♦ 1— meter Belt Filter Press and polymer feed system
This facility is located at the Clay County WWTP (238 Jarrett Road, Hayesville) in Clay County.
2. After receiving an Authorization to Construct (ATC) permit from the Division, and submitting an
acceptable Engineer's Certification Form to the Division at completion of the construction, begin
operating new facilities sufficient to treat 0.47 MGD of wastewater, and
3. After receiving an Authorization to Construct (ATC) permit from the Division, and submitting an
acceptable Engineer's Certification Fotm to the Division at completion of the construction, begin
operating new facilities sufficient to treat 0.64 MGD of wastewater, and
4. Discharge from said treatment works at the location specified on the attached map into the Hiwassee
River, classified WS -1V waters in the Hiwassee River Basin.
Page 2 of 8

Permit NCO026697
Part I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [0.3 MGD]
[15A NCAC 02B.0400 et seq., 02B.0500 et seq]
During the period beginning on the effective date of the permit and lasting until expansion to 0.47 MGD or
expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored'
by the Permittee as specified below:
PARAMETER
LIMITS
MONITORING REQUIREMENTS
[Parameter Code]
Monthly
Weekly
Daily
Measurement
Sample TypeSample
FLocation2
Average
Average
Maximum
Frequency
low
0.3 MGD
Continuous
Recording
Effluentr
BOD, 5 day (20-C)3
30.0 mg/L
45.0 mg/L
Weekly
Composite
Influent &
[C0310]
Effluent
Total Suspended Sohds3
30.0 mg/L
45 0 mg/L
Weekly
Composite
Influent &
[C0530]
Effluent
NH3 as N [C0610]
11.0 mg/L
33 0 mg/L
Weekly
Composite
Effluent
(April 1 — October 31)
NH3 as N [C0610]
Weekly
Composite
Effluent
ovember 1 — March 31)
Dissolved Oxygen
Weekly
Grab
Effluent,
[00300]
U & D
Fecal Cohform [31616]
200/100 mL
400/100 mL
Weekly
Grab
Effluent
(geometric mean)
Total Residual Chlorine4
28 µg/L
2/Week
Grab
Effluent
[50060]
Total Nlercury5
See Footnote 5
Grab
Effluent
[COMER]
Total Nitrogen [C0600]
Semi-annually
Composite
Effluent
(NO2+NO3+TKN)
Total Phosphorus [C0665]
Semi-annually
Composite
Effluent
Temperature (°C) [00010]
Daily
Grab
Effluent
Temperature (�C) [00010]
Weekly
Grab
U & D
H 00400
> 6.0 and < 9.0 standard units
Weekly
Grab
Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR application
system [see A. (5)].
2. U: at least 50 feet upstream from the outfall. D: at least 100 feet downstream from the outfall.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal)
4. The Division shall consider all effluent total residual chlorine values reported below 50 pg/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 lig/L.
5. Total mercury must be sampled once during the permit cycle [see A. (6)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 3 of 8

Permit NCO026697
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [0.47 MGD]
[15A NCAC 02B.0400 et seq., 02B.0500 et seq.]
During the period beginning upon expansion above 0.30 MGD and lasting until expansion above 0.47 MGD or
expiration, the Permittee is authorized to discha=ge from outfall 001. Such discharges shall be limited and monitored'
by the Permittee as specified below
PARAMETER
LIMITS
MONITORING REQUIREMENTS
[Parameter Code]
Monthly
Weekly
Daily
Measurement
Sample
Sample
Average
Avrrage
Maximum
Frequency
Type
Location2
Flow
[50050]
0.47 MGD
Continuous
Recording
Influent or
Effluent
BOD, 5 day (20-C)3
30.0 mg/L
45.0 mg/L
Weekly
Composite
Influent &
[C0310]
Effluent
Total Suspended Sohds3
30.0 mg/L
45 0 mg/L
Weekly
Composite
Influent &
[C0530]
Effluent
NH3 as N [C0610]
5.7 mg/L
17 0 mg/L
Weekly
Composite
Effluent
(April 1— October 31
NH3 as N [C0610]
15 8 mg/L
35.0 mg/L
Weekly
Composite
Effluent
(November 1 — March 31
Dissolved Oxygen
Weekly
Grab
Effluent,
[00300]
U & D
Fecal Coliform [31616]
200/100 mL
400!100 mL
Weekly
Grab
Effluent
(geometric mean)
Total Residual Chlorine4
28 hg/L
2/Week
Grab
Effluent
[50060]
Total Mercury5
See Footnote 5
Grab
Effluent
[COMER]
Total Nitrogen [C0600]
Sena -annually
Composite
Effluent
(NO2+NO3+1'1<N)
Total Phos horus C0665]
Sena -annually
Composite
Effluent
Temperature (C) [00010]
Daily
Grab
Effluent
Temperature (� [00010]
Weekly
Grab
U & D
pH [00400]
> 6.0 and < 9.0 standard units
Weekly
Grab
Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR application
system [see A. (5)].
2. U: at least 50 feet upstream from the outfall. D: at least 100 feet downstream from the outfall.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. The Division shall consider all effluent total residual chlorine values reported below 50 pg/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 Ng/L.
5. Total mercury must be sampled once during the permit cycle [see A. (5)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 8

Permit NCO026697
A. (3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [0.64 MGD]
[15A NCAC 02B.0400 et seq., 02B.0500 et seq]
During the period beginning upon expansion above 0.47 MGD and lasting until expiration, the Permittee is
authorized to discharge from outfall 001. Such discharges shall be limited and monitored' by the Permittee as
specified below:
PARAMETER
LIMITS
MONITORING REQUIREMENTS
[Parameter Code]
Monthly
Weekly
Daily
Measurement
Sample
Sample
Average IAverage
Maximum
Frequency
Type
Location2
Flow
500501
0.64 MGD
Continuous
Recording
Influent or
Effluent
BOD, 5 day (20-C)3
30.0 mg/L
45.0 mg/L
3/Week
Composite
Influent &
[C0310]
Effluent
Total Suspended Sohds3
30 0 mg/L
45 0 mg/L
3/Week
Composite
Influent &
[C0530]
Effluent
NH3 as N [C0610]
5.7 mg/L
17.0 mg/L
3/Week
Composite
Effluent
A rd 1— October 31)
NH3 as N [C0610]
15.8 mg/L
35 0 mg/L
3/Week
Composite
Effluent
(November 1 — March 31
Dissolved Oxygen
3/Week
Grab
Effluent,
[00300]
U & D
Fecal Coliform [31616]
200/100 mL
400/100 mL
3/Week
Grab
Effluent
(geometric mean)
Total Residual Chlonne4
28 µg/L
3/Week
Grab
Effluent
[50060]
Total lifer 4 [COMER]
See Footnote 4
Grab
Effluent
Total Nitrogen [C0600]
Semi-annually
Composite
Effluent
02+NO3+
Total Phosphorus [C0665]
Semi-annually
Composite
Effluent
Temperature CC 00010
Daily
Grab
Effluent
Temperature CC 00010
3/Week
Grab
U & D
H [00400]
216.0 and < 9.0 standard units
3/Week
Grab
Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR application
system [see A (5)].
2. U: at least 50 feet upstream from the outfall. D: at least 100 feet downstream from the outfall.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. The Division shall consider all effluent total residual chlorine 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 mercury must be sampled once during the permit cycle [see A. (5)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 5 of 8

Pernut NCO026697
A. (4.) DISSOLVED OXYGEN (DO) REOPENER
[NCGS 143-215.1 (b)]
The Division may reopen and modify this permit if data from the receiving stream indicates that this
discharge is the primary cause of low dissolved oxygen downstream.
A. (5) 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 forNPDES 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.
Page 6of8

Permit NCO026697
Regardless of the submission method, the first DMR is due on the last dap 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 the Division (see "How to Request a Waiver from
Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122 410)(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:
http-//www epagov/comphance/final-national-pollutant-discharge-ehmination-system-npdes-electronic-
ret� orting-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:
httti //dea nc.Lov/about/di-,gsions/water-resources/edmr
4. Signatory Reguirements[Supplements Section B (11) (b) and Supersedes Section B (11.) (d)]
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 H, Section B. (11.)(b). A
person, and not a position, must be delegated signatory authority for eDMR reporting purposes.
Page 7 of 8

Permit NCO026697
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/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:
"I cert ,under penalty of lam, that Mir document and all attachments were prepared under my direction or supennszon to accordance
with a system designed to assure that qualified personnel properlygather and evaluate the information submitted Based on my
inquiry of the person orpersons who manage the system, or those persons directly responsible forgathetzng 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 knottring violations."
5. Records Retention [Suj2plements 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 rime [40 CFR 122.41].
A. (6) EFFLUENT MERCURY ANALYSIS
[NCGS 143-215.66]
The Permittee shall provide one effluent mercury analysis, using EPA Method 1631E, in conjunction with
the next permit renewal application. The analysis should be taken within 12 months prior to the application
date. Any additional effluent mercury measurements conducted from the effective date of this permit and
up to the application date shall also be subrriitted with the renewal application.
If the result of the mercury analysis is not provided with the application, the application may be returned as
incomplete and the Permittee considered non-compliant.
Page 8 of 8

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NCO026697 - Clay County WWTP
Latitude: 35° 03' 16" N Stream Class: WS -IV
Longitude: 83° 48'55" W Sub -Basin: 04-05-01
USGS Quad: Hayesville, NC
River Basin: Hiwassee
Receiving Stream: Hiwassee River
Facility
Location
Clay County
Ma not to scale