NCG590036_Certificate of Coverage (COC)_20210712

DocuSign Envelope ID: 3AC1 BOD1-6FBC-4A6F-AFAB-5BC62DBF92F7
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
S. DANIEL SMITH
Director
Warren Wood, City Manager
City of Hickory
PO Box 398
Hickory, NC 28601-0398
Dear Permittee:
NORTH CAROLINA
Environmental Quality
7/12/2021
Subject: General Permit No. NCG590000
Certificate of Coverage NCG590036
City of Hickory WTP
Catawba County
General Permit Coverage. In accordance with your application for discharge, the Division is
forwarding herewith the subject Certificate of Coverage to discharge under the subject state-
NPDES general permit. This permit is issued pursuant to the requirements of North Carolina
General Statue 143-215 .1 and the Memorandum of Agreement between North Carolina and the
US Environmental Protection agency dated October 15, 2007 (or as subsequently amended).
The following information is included with your permit package:
• A copy of the Certificate of Coverage for your discharge with a Supplement
• A copy of General Wastewater Discharge Permit NCG590000
• A copy of a Technical Bulletin for the General Wastewater Discharge Permit NCG590000
If any parts, measurement frequencies or sampling requirements contained in this general permit
are unacceptable to you, you have the right to request an individual permit by submitting an
individual permit application. Unless such demand is made, the certificate of coverage shall be
final and binding.
Please take notice that this Certificate of Coverage (CoC) is not transferable except after notice to
the Division of Water Resources. The Division of Water Resources may require modification or
revocation and reissuance of the certificate of coverage. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Resources
or any other Federal, State, or Local governmental permits that may be required.
Certificate of Coverage Supplemental Information and DMR (eDMR) submittals:
The Supplement page attached to the CoC outlines the facility's Water Treatment Plant (WTP)
type, discharge flow volume, receiving stream class & supplemental classifications (ie. Trout
Class, NSW), and the Whole Effluent Toxicity testing requirements, if applicable. Most important,
the Supplement to CoC page identifies the specific Effluent Limitations and Monitoring
Requirements sheet your facility is subject to comply with, Section B. (1.) through B. (4.). Changes
GD_E
NORTH CAROLINA
Department of Environmental Quality
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

DocuSign Envelope ID: 3AC1 BOD1-6FBC-4A6F-AFAB-5BC62DBF92F7
made to the water purification process, the wastewater treatment process, or chemical usages at
the facility require that the permittee notify the Division in writing. Such notifications shall be sent
to the DWR/ NPDES Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617.
All facilities are required to submit monthly Discharge Monitoring Reports and the permittee shall
submit discharge monitoring reports electronically using the NC DWR's eDMR application
system. The permittee shall list its Certificate of Coverage number shown in the subject heading
of this letter, as its NPDES Permit Number on the DMR (eDMR). Please see Section C in the
general permit for more information on Electronic Reporting of Discharge Monitoring Reports
and where to send the signed forms.
The Permittee is expected to construct any wastewater treatment facilities necessary to provide
adequate treatment in order to comply with State Water Quality Standards and permit limitations
set forth in this general permit. It is not necessary to obtain an Authorization to Construct from the
Division for wastewater treatment systems at WTPs per Session Law 2011-394 adopted on July 1,
2011.
NPDES Permit Contact. If you have any questions concerning the requirements of this permit,
please contact Brianna Young at [e-mail] or via telephone at 919-707-3619.
Sincerely,
—DocuSigned by:
`-8328B44CE9EB4A1...
S. Daniel Smith
Director, Division of Water Resources
cc: NPDES Files (Laserfiche)
NPDES General Permit Files/ CoC NCG590036
Mooresville Regional Office
WSS/Aquatic Toxicology Branch
DWR/Public Water Supply
Shawn Pennell, City of Hickory

DocuSign Envelope ID: 3AC1 BOD1-6FBC-4A6F-AFAB-5BC62DBF92F7
CoC NCG590036
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
CERTIFICATE OF COVERAGE NCG590036
GENERAL PERMIT NO. NCG590000
TO DISCHARGE WASTEWATERS FROM Greensand or Conventional type Water Treatment Plants
AND OTHER DISCHARGES WITH SIMILAR CHARACTERISTICS 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, the
City of Hickory
is hereby authorized to discharge wastewater from a conventional water treatment facility designed to
discharge — 0.666 MGD with a potable design flow of 32 MGD from a facility located at
City of Hickory Water Filtration Plant (WTP)
1560 Old Lenoir Road
Hickory
Catawba County
to receiving waters designated as the Catawba River (Lake Hickory) in the Catawba River Basin in
accordance with the effluent limitations, monitoring requirements, and other application conditions set
forth in Parts I, II, III, and IV of General Permit NCG5900000 as attached.
This certificate of coverage shall become effective August 1, 2021
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day July 12, 2021
Doc{u�S)iiggned by:
8328B44CE9EB4A1
S. Daniel Smith
Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 2

DocuSign Envelope ID: 3AC1 BOD1-6FBC-4A6F-AFAB-5BC62DBF92F7
CoC NCG590036
SUPPLEMENT to CoC
In accordance with the NCG590000 General Permit and the information provided in the permittee's
application, this facility should use the information below to determine what Effluent Limitations and
Monitoring Requirements it is subject to in the NCG590000 General Permit. The Permittee is required to
notify the Division of any modifications made to the water purification process, the wastewater treatment
processes, and/or usage of chemicals at the plant. This notification should be made in writing to the
DWR/NPDES Unit and a modified CoC issued if necessary.
1. Type of Water Purification System identified: Greensand X Conventional
2. Design Flow (MGD): _0.666 MGD (maximum, monthly average flow)
3. Receiving Stream Classification: WS-IV, B; CA
4. Effluent Limitations and Monitoring Requirements Permittee is subject to in this General Permit:
GREENSAND WTP discharging to FRESHWATER [See Part 1, Section B. (1)]
GREENSAND WTP discharging to SALTWATER [See Part 1, Section B. (2)]
_X CONVENTIONAL WTP discharging to FRESHWATER [See Part 1, Section B. (3)]
CONVENTIONAL WTP discharging to SALTWATER [See Part 1, Section B. (4)]
All facilities are required to submit monthly Discharge Monitoring Reports and the permittee shall submit
discharge monitoring reports electronically using the NC DWR's eDMR application system. Please see
Part 1, Section C for eDMR information.
For Conventional WTPs:
5. This facility is required to perform annual Whole Effluent Toxicity Testing as shown below:
X Chronic WET test [See Part 1, Section D. (2)]
or
Acute WET test [See Part 1, Section D. (3)]
Using an effluent concentration of 2.5_% and the following
Test organism: _X_ Ceriodaphnia dubia Mysidopsis bahia Fathead Minnow
Page 2 of 2