NC0085154_Draft Permit_20201013

ROY COOPER *''
Governor -rf
MICHAEL S.REGAN � E��s
Secretary
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
October 13, 2020
Mr. Jared Duncan, ORC
Town of Weaverville
PO Box 338
Weaverville, NC 28787-0338
Subject: Draft NPDES Permit NC0085154
Lawrence T. Sprinkle Jr. WTF
Grade I Physical Chemical WPCS
Buncombe County
Dear Mr. Duncan:
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:
1. Language has been updated in Section A.(1) and Section A. (4)to require electronic submission
of effluent data.Federal regulations require electronic submittal of all discharge monitoring
reports(DMRs).
2. Outfall map has been updated.
3. The components list has been updated on the Supplement to Permit Cover Sheet.
4. The facility grade has been added in Section A. (1).
5. Units of measure updated in Section A.(1).
6. Limits have been added for total copper and monitoring increased to monthly in Section A. (1)
based on a reasonable potential to exceed water quality standards.A compliance schedule has
been added as Section A.(3).
7. Monitoring for total fluoride has been removed in Section A.(1) as fluoride does not have the
potential to be discharged.
8. Monitoring for total hardness and associated footnotes have been added in Section A.(1) per
current water treatment plant guidance.
9. Updated the footnotes in Section A.(1).
10. Toxicity language in Section A. (2) has been updated.
Please note that the receiving stream is listed as impaired for fecal coliform on the North Carolina 2018
303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division, and
instream data will continue to be evaluated. If there is noncompliance with permitted effluent limits and
stream impairment can be attributed to your facility, then mitigative measures may be required.
The EPA approved NC 2015-2019 Water Quality Standard (WQS)Triennial Review includes new
chronic and acute dissolved metal standards for most metals. Further,the freshwater standards for
Q 0 North Carolina Department of Environmental Quality Division of Water Resources
Nr��N�D E
512 North Salisbury Street 1 1617 Mail Service Center ( Raleigh.North Carolina 27699-1617
+. d a+� /� 919.707.9000

several metals are expressed as the dissolved form of the metals, and seven metals have hardness-
dependent equations.As a 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, have been added to the permit at a monitoring frequency of quarterly. See Section A.(1)
Effluent Limitations and Monitoring Requirements.
The NPDES standard conditions(Parts II,III,and IV)that are a part of the permit are not included in
this draft document(cover, map, and Part I).The conditions are the same as in your current permit
except that agency and division names have been updated.The latest version is available
at https://bit.ly/2BZ4xxx and can be viewed online or downloaded as a PDF file.
With this notification,the Division will solicit public comment on this draft permit by publishing a
notice in newspapers having circulation in the general Buncombe 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 fmal permit. If you have questions concerning the draft,please
contact me at 919-707-3619, or via e-mail [[e-mail]].
Sincerely,
i
Brianna Young
NPDES Compliance an Expedited Permitting Unit
cc: NPDES Files
Asheville Regional Office
Wastewater Operator Certification Group
WSS/Aquatic Toxicology Branch
Public Water Supply

Permit NC0085154
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
Town of Weaverville
is hereby authorized to discharge treated wastewater from a facility known as
Lawrence T.Sprinkle, Jr. Water Treatment Facility (WTF)
50 Sams Road
Weaverville
Buncombe County
to receiving waters designated as an unnamed tributary to Ivy Creek (River) within the French Broad
River Basin, in accordance with effluent limitations, monitoring requirements, and other applicable
conditions set forth in Parts I,II,III,and IV hereof.
The permit shall become effective
This permit and the 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 9

Permit NC0085154
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility,whether for operation or discharge are hereby
revoked, and as of this 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 described herein.
The Town of Weaverville
is hereby authorized to:
1. Continue to operate a conventional technology water treatment plant [coagulation, flocculation,
sedimentation, and filtration]with discharge of wastewaters from media filter backwash and
sedimentation basins. This water treatment plant currently has a design potable flowrate of 1.5 MGD
and a maximum, monthly average wastewater discharge of approximately 0.0256 MGD.This
facility is located at the Lawrence T. Sprinkle, Jr. WTF, 50 Sams Road in Weaverville in Buncombe
County.Water and wastewater treatment consists of:
• UP flow clarification tank
• Flash mix vault and flash mixer
• Flocculation
• Two(2) sedimentation basins
• Two(2) media filters
• Clearwell
• Media filter backwash
• 250,000 gallon waste basin (circular clarifier)
• Dechlorination equipment
• Chemical usage consists of:
o Delpac 2020 (aluminum chloride hydroxide sulfate)
o Caustic(sodium hydroxide)
o Chlorine gas
o Orthophosphate(corrosion inhibitor)
o Calcium thiosulphate
2. Discharge from said treatment works via Outfall 001 at a location specified on the attached map, into
an unnamed tributary to Ivy Creek(River) [Stream Segment:6-96-(11.3)], a waterbody currently
classified WS-II;HQW,CA within Subbasin 04-03-04 [HUC:060101050805] in the French Broad
River Basin.
Page 2 of 9

Permit NC0085154
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 via Outfall 001. Such discharges shall be limited,
monitored, and reported' by the Permittee as specified below:
LIMITS MONITORING REQUIREMENTS
EFFLUENT CHARACTERISTIC
Parameter code Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location
Flow(MGD) 50050 Weekly Instantaneous Effluent
or Estimate
Instantaneous
Total Flow(MGD) 82220 Weekly or Estimate Effluent
Duration of Discharge(hours) 81381 Weekly Instantaneous Effluent
or Estimate
Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L 2/month Grab Effluent
>6.0 and<9.0 standard
pH 00400 — units 2/month Grab Effluent
Total Residual Chlorine2 50060 17 pg/L 2/month Grab Effluent
Turbidity(NTU) 00070 Monthly Grab Effluent
Total Aluminum(pg/L) 01105 Quarterly Grab Effluent
TotalCopper34 01042 3.94 pg/L 5.24 pg/L Monthly Grab Effluent
Total Manganese(pg/L) 01055 Quarterly Grab Effluent
Hardness—Total as 00900 Monitor& Report Quarterly Grab Effluent
[CaCO3 or(Ca+ Mg)]^(mg/L)
Hardness—Total as 00900 Monitor& Report Quarterly Grab Upstream
[CaCO3 or(Ca+ Mg)],(mg/L)
Chronic WET Testing6 TGP3B Monitor& Report Quarterly Grab Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR
application system [see Section A.(4)].
2. 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.
3. See Section A.(3)for compliance schedule.
4. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent
metals(copper).
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
Page 3 of 9

Permit NC0085154
the Permittee has obtained approval from DWR-NPDES Permitting Unit that the upstream station being
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. Testing Ceriodaphnia dubia shall be performed as a 7-day chronic pass/fail test at 90%effluent
concentration,duringthe months of January,April,Julyand October[see Section A.(2)].
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Samples shall be taken at the outfall but prior to mixing with the receiving waters.
There shall be no discharge of floating solids or foam visible in other than trace amounts.
Page 4 of 9

Permit NC0085154
A.(2) CHRONIC TOXICITY PASS/FAIL 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 90 %. 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 fmal effluent
discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered electronically using
the Division's eDMR system 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:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Or, results can be sent to the email, [e-mail].
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
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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.
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.
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Permit NC0085154
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 following the month of the initial monitoring.
A.(3) SCHEDULE OF COMPLIANCE(OUTFALL 001)
[G.S. 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.
The Corrective Action Plan and reports shall include the owner's name,NPDES permit number and
Permittee contact person,and shall be submitted to:
(1) NCDEQ/Division of Water Resources (2)NCDEQ/Division of Water Resources
NPDES Compliance and Expedited Permitting Asheville Regional Office
1617 Mail Service Center 2090 U.S.70 Highway
Raleigh, NC 27699-1617 Swannanoa,NC 28778
A.(4) 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
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Permit NC0085154
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.)and Section E.(5.)(a)l
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:httns://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 21,2020,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.
> NPDES Electronic Reporting Rule—Phase 2 Extension.EPA is proposing to extend
the Phase 2 deadline from December 21,2020 until at least December 21,2023.The
current compliance date will be extended if the implementation date is extended as a
fmal regulation change in the federal register.
�
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
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Permit NC0085154
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/2015/10122/2015-
24954/national-pollutant-d ischarge-elimination-system-npd es-e lectronic-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
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:
ht t p://d eq.nc.gov/about/d ivisions/water-resources/ed mr
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Permit NC0085154
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,
knowledge and belieftrue, accurate, and complete. I
the information submitted is, to the best ofmyp
f g
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 9 of 9

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Facility Location /rtjlt�``
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Receiving Stream: UT to Ivy Creek(River) Stream Class:WS-II; HQW,CA scale not shown
Stream Segment:6-96-(11.3) Sub-Basin#:04-03-04 *POW
River Basin: French Broad HUC:060101050805 SCALE USGS Quad:Mars Hill
County: Buncombe 1:24,000 35.78194°,-82.55472°