NC0080381_Draft Permit_20190710

ROY COOPER
0$ 4 Governor
_`r MICHAEL S. REGAN
l ti Secretary
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LINDA CULPEPPER
Director
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NORTH CAROLINA
Environmental Quality
July 10,2019
Russell G. Colbath,Director
City of Monroe
PO Box 69
Monroe,NC 28111
Subject: Draft NPDES Permit NC0080381
Grade I Physical Chemical WPCS
John Glenn WTP
Union County
Dear Mr. Colbath:
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:
> Regulatory citations have been added.
> Outfall map has been updated.
> Iron has been removed from the Effluent table in Section A.(1)as there are no longer water quality
standards for iron and the permit renewal application indicated iron sulfate or ferrous sulfate did not have
the potential to be discharged.
➢ Quarterly monitoring for Hardness has been added to the Effluent table in Section A.(1.)per current water
treatment plan guidance.
➢ Removed former Footnote#3 in Section A.(1)as this is no longer required.
> Limits for Copper have been added to the Effluent table in Section A.(1.)in conjunction with a
Compliance Schedule in Section A. (3)based on a reasonable potential to exceed water quality standards.
> Section A.(4)and Footnote#1 in Section A. (1.)has been updated regarding electronic submission of
effluent data. Federal regulations require electronic submittal of all discharge monitoring reports
(DMRs).
➢ Section A.(2)and Footnote#6 in Section A. (1.)has been updated with the new effluent concentration
for chronic toxicity testing.
The NC 2007-2014 Water Quality Standard(WQS)Triennial Review was approved by the NC Environmental
Management Committee(EMC)on November 13,2014.The US EPA subsequently approved the WQS revisions
on April 6,2016 with some exceptions.The NC Division of Water Resources NPDES Permitting Unit is required
to implement the new dissolved metal standards in all permits public noticed after April 6,2016.
The new standards for most metals include acute standards.Further,the freshwater standards for several metals
are expressed as the dissolved form of the metals,and seven metals have harness-dependent equations.As a
North Carolina Department of Environmental Quality I Division of Water Resources
1617 Mail Service Center I Raleigh,North Carolina 27699-1617
919-707-3712

result,the NPDES Permitting Unit will need site-specific effluent hardness data and instream hardness data,
upstream of the discharge, for each facility monitoring these metals in order to calculate permit limitations.
Effluent hardness and instream hardness sampling,upstream of the discharge,has been added to this permit at a
monitoring frequency of quarterly. See Section A. (1)Effluent Limitations and Monitoring Requirements.
With this notification,the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Union 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]].
Sincerely,
Sydney Carpenter
NPDES Program
cc: NPDES Permit File
Maureen Kinney
Mooresville Regional Office
Aquatic Toxicology Unit
David Rankin,WTP Superintendent

Permit NC0080381
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 provisions 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 Monroe
is hereby authorized to discharge wastewater from a facility located at the
John Glenn Water Treatment Plant (WTP)
2119 Old Camden Road
Monroe
Union County
to receiving waters designated as Stewarts Creek in the Yadkin-Pee Dee River,
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 January 31, 2024.
Signed this day .
DRAFT
Linda Culpepper, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NC0080381
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 City of Monroe
is hereby authorized to:
1. Continue to operate a conventional water treatment plant with a discharge of wastewaters from
filter backwash and sedimentation basins to wastewater lagoons. This water treatment plant
currently has a design potable flowrate of 11.2 MGD and a maximum monthly average wastewater
discharge of approximately 0.9306 MGD. This facility is located at 2119 Old Camden Road,
Monroe in Union County. Wastewater treatment consist of:
• Sludge storage lagoon
• Clarifier
• Dechlorination with sulfur dioxide
2. Discharge of treated wastewater from said treatment works at the location specified on the attached
map into Stewarts Creek, currently classified C waters [Stream Index: 13-17-36-9-(6)] in sub-basin
03-07-14 [HUC: 0304010505] of the Yadkin-Pee Dee River Basin.
Page 2 of 8

Permit NC0080381
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade I Physical Chemical WPCS [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 filter backwash from outfall 001. Such discharges shall be limited
and monitored' by the Permittee as specified below:
EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS
Monthly Daily Measurement Sample Type Sample Location
[eDMR Code] Average Maximum Frequency
Flow [50050] Continuous Recording Effluent
TSS [C0530] 30.0 mg/L 45.0 mg/L Weekly Grab Effluent
pH [00400] >_6.0&<_9.0 standard units. Weekly Grab Effluent
Total Residual Chlorine2 [50060] 19 pg/L Weekly Grab Effluent
Turbidity [00070] Monitor&Report 2/Month Grab Effluent
Total Zinc(pg/L) [01092] Monitor&Report Quarterly Grab Effluent
Ammonia Nitrogen(mg/L) [C0610] Monitor&Report Quarterly Grab Effluent
Manganese(pg/L) [01055] Monitor&Report Quarterly Grab Effluent
Total Fluoride(pg/L) [00951] Monitor&Report Quarterly Grab Effluent
Total Copper3(pg/L) [01042] 15.51 (pg/L) 21.40(pg/L) Monthly Grab Effluent
Total Phosphorus(TP)(mg/L) [C0665] Monitor&Report Quarterly Grab Effluent
Total Nitrogen(TN)(mg/L) [C0600] Monitor&Report Quarterly Grab Effluent
Hardness-Total as Monitor&Report Quarterly Grab Effluent
[CaCO3 or(Ca+Mg)]4 (mg/L) [00900]
Hardness-Total as Monitor&Report Quarterly Grab Upstream
[CaCO3 or(Ca+Mg)]5 (mg/L) [00900]
Whole Effluent Toxicity Monitoring6 [TGP3B] Monitor&Report Quarterly Grab Effluent
Notes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system
[see A. (4)].
2. The Division shall consider all effluent TRC values reported below 50 ugh'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 ugh .
3. See Section A. (3) for a compliance schedule regarding Total Copper monitoring over the next five years.
4. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals I
(cadmium, copper, lead,nickel, silver, and zinc).
5. The Permittee shall sample instream hardness,upstream of the facility's discharge. The sample shall be
representative of the hardness in the receiving stream. If the Permittee is a member of the Monitoring
Coalition Program, sampling for instream hardness may be waived as long as the Monitoring Coalition
agrees to sample hardness at the nearest upstream location, at a minimum frequency of quarterly, and the
Permittee has obtained approval from DWR-NPDES Permitting Unit that the upstream station being
Page 3 of 8

Permit NC0080381
monitored by the Coalition is representative of the receiving stream for this discharge.The Permittee is
responsible for submitting instream hardness test results with its permit renewal application package.If
Coalition membership is cancelled or the Coalition terminates instream hardness sampling at the approved
station,the Permittee will immediately notify the Division and resume sampling for instream hardness,
upstream of its discharge.
6. Chronic Toxicity(Ceriodaphnia dubia)7-day pass/fail test @ 87.3%,conducted during the months of
January,April,July and October. See Section A(2.).
All samples collected should be from a representative discharge event.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A.(2.) CHRONIC TOXICITY MONITORING(QUARTERLY)
[15A NCAC 02B .0500 et seq.]
The permittee shall conduct quarterly chronic toxicity tests using test procedures outlined in the"North Carolina
Ceriodaphnia Chronic Effluent Bioassay Procedure,"Revised December 2010,or subsequent versions.
The effluent concentration defined as treatment two in the procedure document is 87.3%. The testing shall be
performed as a Ceriodaphnia dubia 7-day pass/fail test. The tests will be performed during the months of
January,April,July and October. These months signify the first month of each three month toxicity testing
quarter assigned to the facility. Effluent sampling for this testing must be obtained during representative
effluent discharge and shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form(MR-1)for the month in which it was performed,using the parameter code TGP3B.
Additionally,DWR Form AT-1 (original)is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days
after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed
in association with the toxicity tests,as well as all dose/response data.Total residual chlorine of the effluent
toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic toxicity(AT)test form indicating the
facility name,permit number,pipe number, county,and the month/year of the report with the notation of"No
Flow"in the comment area of the form.The report shall be submitted to the Water Sciences Section at the
address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,then monthly
monitoring will begin immediately.Upon submission of a valid test,this monthly test requirement will revert to
quarterly in the months specified above.
Page 4 of 8

Permit NC0080381
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Water Resources indicate potential impacts to the receiving stream,this permit may be re-opened and modified
to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival,minimum control organism reproduction,and appropriate environmental controls, shall constitute an
invalid test and will require immediate follow-up testing to be completed no later than the last day of the month
followingthe month of the initial monitoring.
g
A. (3.) SCHEDULE OF COMPLIANCE (OUTFALL 001)
[NCGS 143-215.1(b)]
1. Within one year from the effective date of the permit the Permittee shall submit to the Division of
Water Resources a Corrective Action Plan summarizing the actions or strategy to be taken to
achieve compliance with the Total Copper limits at Outfall 001. Specific dates for completion or
implementation of each action shall be included.
2. Within two years from the effective date of the permit submit'a report to the Division summarizing
actions taken in accordance with the Corrective Action Plan.
3. Within three years from the effective date of the permit submit a report to the Division summarizing
actions taken in accordance with the Corrective Action Plan.
4. Within four years from the effective date of the permit submit a report to the Division summarizing
actions taken in accordance with the Corrective Action Plan.
5. Achieve compliance with Total Copper limits specified in Section A. (1)within five years of the
permit effective date.
Upon approval of the Corrective Action Plan by the Division,the report and actions become an
enforceable part of this permit. Any modifications to the schedule shall be requested to the Division at
least ninety(90)days before the deadline. Modifications to the schedule in excess of four months will
be subject to public notice.
A. (4.) ELECTRONIC REPORTING OF DISCHARGE 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 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.) (a)I
Page 5 of 8

Permit NC0080381
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.
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, 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 122.41(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
Page 6 of 8

Permit NC0080381
Rule is found at: http://www2.epa.gov/compliance/final-national-pollutant-discharge-elimination-
system-npdes-electronic-reporting-rule.
Electronic submissions must start bythe dates listed in the"Reporting Requirements"section above.
� g q
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:
https://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.)1
Page 7 of 8

Permit NC0080381
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 8 of 8

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NC0080381 - John Glenn WTP Facility '
Latitude: 35°02' 11" N USGS Ouad: Watson Location x
Longitude: 80°28'37" W HUC: 0304010505
Stream Index: 13-17-36-9-(6) Stream Class: C
Drainage Basin: Yadkin-Pee Dee River Basin Sub-Basin:03-07-14
Receiving Stream: Stewart Creek North Union County