NC0086304_Draft Permit_20210309

ROY COOPER
" •
Governor T r
MICHAEL S. REGAN +
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
March 9, 2021
Ms.Morgan C.Williams
Catawba County Schools
P.O.Box 1010
Newton,NC 28658
Subject: Draft NPDES Permit NC0086304
Mill Creek Middle School
Catawba County
Grade I 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. (2.)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 circulation in thegeneral Davidson Countyarea,per EPA requirements.Please provide your
o de
having �1 P
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.phillipsAncdenr.gov.
Sincerely,
CDocuSigned by:
FA i(,y 19L airs
88E5303164 0471...
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 N `th 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 Schools
are hereby authorized to:
1. continue to operate an existing 0.0065 MGD wastewater treatment system utilizing 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 NC0086304
Part I.
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[NCAC 02B.0400 et seq., 02B.0500 et seq.]
Grade I Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge from Outfall 001. Such discharges shall be limited,monitored and
reported' by the Permittee as specified below:
PARAMETER LIMITS MONITORING REQUIREMENTS
[Parameter Codes] Monthly Daily Measurement Sample Type Sample
Average Maximum Frequency Location
Flow 50050 0.007 MGD Weekly Instantaneous Influent or
Effluent
Total Residual Chlorine 50060 28 ig/L 2 2/Week Grab Effluent
Temperature(°C) 00010 Weekly Grab Effluent
BOD,5-day(20°C) C0310 30.0 mg/L 45.0 mg/L 2/Month Grab Effluent
Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L 2/Month Grab Effluent
pH 00400 Not> 6.0 or<9.0 2/Month Grab Effluent
standard units
Fecal Coliform 31616 200/100 ml 400/100 ml 2/Month Grab Effluent
(geometric mean)
Ammonia(NH3 as N) C0610 Monthly Grab Effluent
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR
submittal system [See Section A. (2.)].
2. Total Residual Chlorine(TRC) limit and monitoring apply only if chlorine is used to disinfect. The
Division shall deem compliant all effluent TRC values reported below 501.1g/L. However,the
Permittee shall report all values detected by North Carolina-certified test methods [including field-
certified] even if these values fall below 50µg/L.
The Permittee shall discharge no floating solids or foam.
Page 3 of 6

Permit NC0086304
A. (2.) 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
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
Page 4 of 6

Permit NC0086304
• 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 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
Page 5 of 6

Permit NC0086304
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 offines and imprisonment for knowing violations."
5. 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 6

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Mill Creek Middle School Facility
Latitude: 35°38' 55" N Sub-Basin: 03-08-32 Location
Longitude: 81°05' 32"W Stream Class: WS-IV; CA
Receiving Stream: UT to Balls Creek
North NC0086304