NC0063355_Draft Permit_20210309

ROY COOPER
Governor A' ' r 4.
MICHAEL S. REGANo, 1.11
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
tY
March 9, 2021
Ms. Amanda Berger
Aqua North Carolina, Inc.
202 Mackenan Court
Cary,NC 27511
Subject: Draft NPDES Permit NC0063355
Killians Crossroads WWTP
Catawba 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. (6.)has been updated to require electronic submission of effluent data
reports (DMRs). Federal regulations require electronic submittal of all discharge
monitoring.
• Temperature monitoring frequency was updated to reflect weekly versus daily 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 Davidson 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(a,ncdenr.gov.
Sincerely,
, DocuSipned by:
►,i(� pLuLLi,S
—8BE53CB1646O471
Emily Phillips
Compliance and Expedited Permitting Unit
cc: NPDES files
ec: MRO
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-permits/wastewater-branch/npdes-wastewater-permits

Permit NC0086304
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, the
Catawba County Schools
is hereby authorized to discharge wastewater from a facility located at the
Mill Creek Middle School WWTP
1041 Shiloh Road, Claremont
Catawba County
to receiving waters designated as a unnamed tributary of Balls Creek in sub-basin 03-08-32 of the
Catawba 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, 2025.
Signed this day
S. Daniel Smith., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 6

Permit NC0086304
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.
Catawba County SOliools
are hereby authorized to:
1. continue to operate an existing 0.0065 MGD wastewater treatment sy tilizing the following
components:
• grease trap [4000-gallon]
• two septic tanks [6000 gallons & 4000 gallons) in series
• dosing tank [.1150-ft2 with dual alternating siphons]
• dual (2) sand-filters [1152-ft2 in parallel] with liners, distribution piping & under-drain
• recalculating pump station [dual discharge pumps/dual recirculation]
• UV disinfection unit [dual-module]
these facilities located at the Mill Creek Middle School WWTP, 1041 Shiloh Road, Claremont,
Catawba County, and
2. discharge from said treatment works via Outfall 001, at the location specified on the attached map,
into an unnamed tributary to Balls Creek [stream segment 11-80-(2)], a waterbody currently
classified WS-IV; CA within sub-basin 03-08-32 of the Catawba River Basin.
Page 2 of 6

Permit NC0063355
Part 1.
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 the permit and lasting until expiration or expansion
greater than 0.05 MGD,the Permittee is authorized to discharge treated wastewater from outfall(s) 001.
Such discharges shall be limited and monitored' by the Permittee as specified below:
Effluent Characteristics Limits Monitoring Requirements
[Parameter Codes] Monthly Daily Measurement Sample Type Sample
2
Average Maximum Frequency Location _
Flow[50050] 0.05 MGD Continuous Recording I or E
BOD, 5-day, 20°C 15.0 mg/L 22.5 mg/L Weekly Composite E
[C0310]
Total Suspended Solids 30.0 mg/L 45.0 mg/L Weekly Composite E
[C0530]
NH3-N 4.0 mg/L 20.0 mg/L Weekly Composite E
[C0610]
Fecal Coliform[31616] 200/100m1 400/100m1 Weekly Grab E
(geometric mean)
Dissolved Oxygen(mg/L) Not< 6.0 mg/L Weekly Grab E
[00300]
pH >6.0 and <9.0 standard Weekly Grab E
[00400] units
Temperature(°C) Weekly Grab E
[00010]
Total Residual Chlorines 28 µg/L 2/Week Grab E
[50060]
Oil and Grease 30.0 mg/L 60.0 mg/L 2/Month Grab E
[00556]
MBAS(mg/L)
[38260] Monthly Composite E
Total Nitrogen (mg/L) Quarterly Composite E
[C0600](NO2+ NO3+TKN)
Total Phosphorus(mg/L)
[C0665] Quarterly Composite E
Dissolved Oxygen Weekly Grab U, D
[00300]
Temperature(°C) Weekly Grab U, D
[00010]
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system[see
A. (6).]
2. Sample Location: I-Influent,E—Effluent;U—Upstream at least 100 feet upstream of the outfall;D—
Downstream.
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 a North Carolina
certified laboratory(including field certified),even if these values fall below 50 µg/L.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 3 of 9

Permit NC0063355
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 greater than 0.05 MGD and lasting until expiration,the
Permittee is authorized to discharge treated wastewater from outfall(s) 001. Such discharges shall be
limited and monitored' by the Permittee as specified below:
Effluent Characteristics Monitoring Requirements
Monthly Daily Measurement Sample
[Parameter Codes] Average Maximum Frequency Sample Type Location2
Flow 0.075 MGD Continuous Recording I or E
[50050]
BOD, 5-day, 20°C 15.0 mg/L 22.5 mg/L Weekly Composite E
[C0310]
Total Suspended Solids 30.0 mg/L 45.0 mg/L Weekly Composite E
[C0530]
NH3-N 4.0 mg/L 20.0 mg/L Weekly Composite E
[C0610]
Fecal Coliform [31616] 200/100m1 400/ 100m1 Weekly Grab E
(geometric mean)
Dissolved Oxygen(mg/L) Not<6.0 mg/L Weekly Grab E
[00300]
pH >6.0 and<9.0 standard Weekly Grab E
[00400] units
Temperature(°C) Weekly Grab E
[00010]
Total Residual Chlorine 28 µg/L 2/Week Grab E
[50060]
Oil and Grease 30.0 mg/L 60.0 mg/L 2/Month Grab E
[00556]
MBAS(mg/L) Monthly Composite E
[38260]
Total Nitrogen (mg/L) Quarterly Composite E
[C0600](NO2+ NO3+TKN)
Total Phosphorus(mg/L) Quarterly Composite E
[C0665]
Dissolved Oxygen Weekly Grab U, D
[00300]
Temperature(°C) Weekly Grab U, D
[00010]
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system[see
A. (6.)]
2. Sample Location: I-Influent,E—Effluent;U—Upstream at least 100 feet upstream of the outfall;D—
Downstream.
Page 4 of 9

Permit NC0063355
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 a North Carolina
certified laboratory(including field certified),even if these values fall below 50 µg/L.
There shall be no discharge offloating solids or visible foam in other than trace amounts.
Operations
A. (3.) SPECIAL CONDITION—O p
[G.S. 143-215.1(b).]
(a) Inspect the performance of the plant's disinfection system eve eekday and maintain a log of
such inspections; and A y
(b) Operate a Supervisory Control and Data Acquisition(SCADA stem at the plant.
A. (4.) SPECIAL CONDITION—Flow Expansion Request
[15A NCAC 02H.0105]
Concurrent with any application for an Authorization to Construct that results in an expansion of flow,the
facility shall submit an updated flow justification and permit compliance review.
a) The flow justification shall include at least the following:
1. Provide Basic Identification of the Project
• Facility name
• County
• Facility address
• Facility telephone number
• Preparer's name
• Preparer's mailing address and telephone number
2. Provide a detailed description of the project requiring an expansion of wastewater disposal.The
wastewater flows should be calculated according to 1 SA NCAC 2H.0219.Demonstrate and
justify the need for flow volumes,to include any flow reductions realized through flow-
restricting devices.The use of flow-restricting or low-flow devices should be investigated.
Report findings should include flow reduction projections.Updated plat maps,a time schedule
for connection,and documentation of commitments shall be required.
3. If existing facilities will be used as part of an expansion,discuss those existing units including
present and past performance,unit capacities,and inadequacies of each.Include a schematic
with component sizes.
4. Indicate if the project will be constructed in phases.Provide the estimated wasteflow per phase.
Indicate current phase status for existing facilities and provide a schedule for constructing each
additional phase.
Page 5 of 9

Permit NC0063355
b) The compliance review report shall summarize the performance of the treatment works or collection
system and state the extent to which any terms of its permit, federal laws, or any State laws,
regulations or rules related to the protection of water quality have been violated.
A. (5.) SPECIAL CONDITION—Spill Notification
[G.S. 143-215.3(a)(2).]
(a)Contacting Public Health Directors
The facility must notify the Iredell,Lincoln,Catawba,and Mecklenburg County Public Health Directors
within 12 hours of first knowledge by the owner/operator of any discharge of untreated wastewater to
waters of the State or a discharge from the wastewater treatment plant that has not received adequate
disinfection due to a malfunctioning treatment unit.
The County Public Health Directors can be contacted using the following information:
Catawba County Health Director Iredell County Health Director
3070 11t Ave.Dr. S.E. 318 Turnersburg Highway
Hickory,NC 28602 Statesville,NC 28625
828-695-5800 704-878-5300
Lincoln County Health Director
151 Sigmon Rd.
Lincolnton,NC 28092-8643
704-736-8634
(b)Public Notification
The facility must notify the public of untreated wastewater spills. Wastewater facility owners or
operators must issue a press release after a discharge to surface waters of 1,000 gallons within 24 hours of
first knowledge of the spill by the owner/operator.The press release must be issued to"all electronic and
print news media outlets that provide general coverage in the county where the discharge occurred."A
copy of the press release must be maintained for one year by the owner/operator. This press release is
required in addition to the permit requirement of contacting the North Carolina Division of Water
Resources(DWR).
Ifdischargeof 1 a 5 000gallons or more reaches surface water,apublic notice is required in addition to
q
the press release.The public notice must be placed in a newspaper having general circulation in the
County in which the discharge occurred and the county immediately downstream.The owner or operator
shall publish the notice within 10 days after the Secretary has determined the countries that are
significantly affected by the discharge and approved the form and content of the notice and the newspaper
in which the notice is to be published.At a minimum the notice should be published in a newspaper of
general circulation in Iredell, Lincoln,Catawba,and Mecklenburg Counties. If a discharge of 1,000,000
gallons of wastewater or more reaches surface waters,the NC DENR Mooresville Regional Office must
be contacted to determine in what additional counties,if any,a public notice must be published. A copy
of these public notices and proof of publication must be sent to the DWR within 30 days of publication.
Page 6 of 9

Permit NC0063355
The copy should be sent to the following address:
Division of Water Resources
PERCS Unit
1617 Mail Service Center
Raleigh,NC 27699-1617
The minimum content of the notice is the location of the discharge, estimated volume,water body
affected and steps taken to prevent future discharges.
A. (6.) 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.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) 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.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 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
Raleigh, North Carolina 27699-1617
Page 7 of 9

Permit NC0063355
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 21,2025, 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)].
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.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
Page 8 of 9

Permit NC0063355
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/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 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.)l
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 9 of 9

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Killians Crossings WWTP Facility
Will-
Latitude: 35°34' 35" N Sub-Basin: 03-03-01
Location
Longitude: 81°01' 55" W Stream Class: WS-IV, B; CA _
Receiving Stream: Catawba River(Lake Norman below elevation
760) North NC0063355