NC0076431_Draft Permit_20210927

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary S. DANIEL SMITH *W. -
Director •
pawrlMl.
NORTH CAROLINA
Environmental Quality
September 27,2021
Carolina Water Service Inc.of North Carolina
Attn:Mr.Tony Konsul,Director of Operations
P.O.Box 240908
Charlotte,NC 28224
Subject: Draft NPDES Permit NC0076431
Wolf Laurel WWTP
Madison County
Grade II Biological WPCS
Dear Permittee:
The Division has reviewed your request to renew the subject permit. 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:
• Section A.(3.)has been updated to require electronic submission of effluent data
reports(DMRs).Federal regulations require electronic submittal of all discharge
monitoring.
• An updated outfall map has been included.
•
With this notification,the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Madison 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 any questions concerning this permit,please contact
Emily Phillips at emily.phillips(7a,ncdenr.gov.
Sincerely,
DocuSfpn•d by:
PLAWFS
88E53C8164e0471...
Emily Phillips
Compliance and Expedited Permitting Unit
cc: NPDES files
ec: ARO
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh,NC 27699-1617
919-807-6300 919-807-6389 FAX
https://deq.nc.gov/about/divisions/water-resources/water-resources-pemvts/wastewater-branch/npdes-wastewater-perntits

Permit NC0076431
Grade II Biological Water Pollution Control System[15A NCAC 08G .0302]
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 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,
Carolina Water Service, Inc. of NC
is hereby authorized to discharge wastewater from a facility located at the
Wolf Laurel WWTP
835 Oak Ridge Lane, Mars Hill 28754
Madison County
to receiving waters designated as Wolf Laurel Branch in the French Broad 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
This permit and authorization to discharge shall expire at midnight on September 30, 2025.
Signed this day
S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NC0076431
Grade II Biological Water Pollution Control System[15A NCAC 08G.0302]
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 an existing 0.0244 MGD extended aeration wastewater treatment system
with the following components;
• flow equalization basin(including grinder pumps and high water alarm) [5,000 gallon]
• aeration basin with dual blowers [25,200 gallon]
• circular clarifier with drive unit and sludge return [5,169 gallon]
• aerobic digestor[3,790 gallon]
• chlorine contact tank with tablet chlorination
• dechlorination
• flow measurement
• portable emergency generator
located at the Wolf Laurel WWTP north of Mars Hill at 835 Oak Ridge Lane in Madison County,
2. only after requesting permission from the Division to expand flow, and after submitting
justification for expansion as supplement to applying for Authorization to Construct (ATC) as
needed; and after submitting an Engineers Certification documenting treatment-system
compliance with said expansion, not-to-exceed 0.030 MGD; and after receiving the Division's
authorization to operate,then
3. discharge from said treatment works via Outfall 001, at the location specified on the attached
map into Wolf Laurel Branch [6-112-5-2], a waterbody currently classified C; Tr, ORW located
within Subbasin 04-03-04 [HUC: 060101051001] of the French Broad River Basin.
Page 2 of 7

Permit NC0076431
Grade II Biological Water Pollution Control System[15A NCAC 08G.0302]
PART I.
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade II Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of this permit, and lasting until expansion above 0.0244
MGD or September 30, 2020, 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:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS[Parameter Codes] Monthly Daily Maximum Measurement Sample Sample
Average Frequency Type Location2
Flow(MGD) 50050 0.0244 MGD Weekly Instantaneous E
Temperature(°C) 00010 Daily Grab E
Total Residual Chlorine(TRC)3(Ng/L) 50060 28 Ng/L 3 2/week Grab E
1mg/L 45.0 mg/L WeeklyE
BOD,5-day(20 C)(mg/L) CO3 0 30.0 g Grab
Total Suspended Solids(TSS) (mg/L) C0530 30.0 mg/L 45.0 mg/L Weekly Grab E
NH3-N(April 1-October 31)(mg/L) C0610 2.3 mg/l 11.5 mg/L Weekly Grab E
NH3-N(November 1-March 31) (mg/L) C0610 6.7 mg/L33.5 mg/L Weekly Grab E
4 31616 200/100 ml 7 400/100 ml WeeklyGrab E
Fecal Coliform (#/100m1)
Dissolved Oxygen(mg/L) 00300 Daily average not<6.0 mg/L Weekly Grab E
Turbidity(NTU) 541111111kk00070 10 NTU 5 Weekly Grab E
Turbidity(NTU)5 0070 Monitor&Report Weekly Grab U&D
pH(su) 00400 > 6.0 and < 9.0 standard units Weekly Grab E
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR application
system. [See A.(3.]).
2. E=Effluent,U=Upstream: at least 100 feet above discharge.D=Downstream: at least 300 feet below discharge.
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 North Carolina certified test methods
(including field certified),even if these values fall below 50 µg/L.
4. Fecal Coliform shall be calculated using the geometric mean,according to the procedure detailed in Part II.Section A.
5. Turbidity- Effluent shall not cause receiving stream turbidity to exceed 10 NTU. If receiving stream background
turbidity exceeds 10 NTU,effluent shall not cause this background value to increase.
There shall be no discharge of floating solids or foam visible in other than trace amounts.
Page 3 of 7

Permit NC0076431
Grade II Biological Water Pollution Control System[15A NCAC 08G.0302]
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade II Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning upon expansion above 0.0244 MGD,and lasting until September 30,2020,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:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS Sample
[Parameter Codes] Monthly Daily Maximum'Measurement Sample2
Average Frequency Type Location
Flow(MGD) 50050 0.030 MGD Weekly Instantaneous E
Temperature(°C) 00010 Daily Grab E
Total Residual Chlorine(TRC) 3(Ng/L) 50060 28 pg/L 3 2/week Grab E
BOD,5-day(20°C)(mg/L) CO3 0.0 mg/L 45.0 mg/L Weekly Grab E
Total Suspended Solids(TSS)(mg/L) C0530 "x 30.0 mg/L 45.0 mg/L Weekly Grab E
NH3-N(April 1-October 31) (mg/L) C0610 2.3 mg/L 11.5 mg/L Weekly Grab E
NH3-N(November 1-March 31)(mg/L) C0610 6.7 mg/L 33.5 mg/L Weekly Grab E
Fecal Coliform 4(#/100m1) 31616 200/100 ml 400/100 ml Weekly Grab E
Dissolved Oxygen(mg/L) 00300 Daily average not<6.0 mg/L Weekly Grab E
Turbidity(NTU) 00070 10 NTU 5 Weekly Grab E
Turbidity(NTU) 5 00070 Monitor&Report Weekly Grab U&D
pH(su) 00400 >6.0 and <9.0 standard units Weekly Grab E
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR application
system. [See A. (3.)].
2. E=Effluent,U=Upstream:at least 100 feet above discharge.D=Downstream:at least 300 feet below discharge.
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 North Carolina certified test methods
(including field certified),even if these values fall below 50 pg/L.
4. Fecal Coliform shall be calculated using the geometric mean,according to the procedure detailed in Part II.Section A.
5. Turbidity-Effluent shall not cause receiving stream turbidity to exceed 10 NTU.If receiving stream
background turbidity exceeds 10 NTU,effluent shall not cause this background value to increase.
There shall be no discharge of floating solids or visible form in other than trace amounts.
Page 4 of 7

Permit NC0076431
Grade II Biological Water Pollution Control System[15A NCAC 08G.0302]
A. (3.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that, if a state does not establish a system to receive such submittals,then permittees must
submit DMRs electronically to the Environmental Protection Agency(EPA). The Division adopted
these regulations in 2013.
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
• Section E. (5.) Monitoring Reports
1. Reporting [Supersedes Section D.(2.)and Section E. (5.) (all
Beginning no later than 270 days from the effective date of this permit,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/DWR/ Information Processing Unit
ATTENTION: Central Files /eDMR
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.
Requests for temporary waivers from the NPDES electronic reporting requirements 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 using eDMR. Temporary waivers shall be
Page 5 of 7

Permit NC0076431
Grade II Biological Water Pollution Control System[15A NCAC 08G.0302]
valid for twelve(12)months and shall thereupon expire. At such time, DMRs shall be submitted
electronically to the Division unless the permittee re-applies for and is granted a new temporary
waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
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.
2. 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://portal.ncdenr.org/web/wq/admin/bog/ipu/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 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."
3. 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 122.41].
Page 6 of 7

Permit NC0076431
Grade II Biological Water Pollution Control System[15A NCAC 08G .0302]
Page 7 of 7

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Latitude: 35°57' 35" Wolf Laurel Facility * Ille
Longitude: 82° 30' 35" WWTP Location
Stream Class: C; Tr, ORW
Sub-basin: 04-03-04 NC0076431 -43,-
Receiving Stream: Wolf Laurel North Madison County
Branch