NC0020931_Draft Permit_20180822

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NORTH CAROLINA
ROY COOPER Environmental Quality
Cov rnor
MICHAEL S.REGAN
Secretary
LINDA CULPEPPER
Interim Director August 22,2018
Mayor Russell Hunter IV
Town of Boonville
P.O.Box 326
Boonville,NC 27011-0326
Subject: Draft NPDES Permit Renewal
Permit No.NC0020931
Boonville WWTP
Grade II Biological WPCS
Yadkin County
Dear Mayor Hunter: .
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 no significant changes from the existing permit.
D Ownership and facility name were updated
D HUC and Stream Index numbers were added
D Regulatory Citations were included where necessary
> This draft contains an updated version of the outfall map
With this notification,the Division will solicit public comment on this draft permit by publishing a notice
in newspapers having circulation in the general Yadkin 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,
,,,,,4.3
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Emily DelDuco
Environmental Specialist
NPDES Program
cc: NPDES Unit
11:).—::V.C1)5
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
919.707.9125

Permit NC0020931
• Grade II Biological WPCS [15A NCAC 08G.0302]
•
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
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
Town of Boonville
is hereby authorized to discharge wastewater from a facility located at the
Boonville WWTP
456 Lon Avenue
Boonville
Yadkin County
to receiving waters designated as Tanyard Creek in the Yadkin-Pee Dee River Basin, in accordance with
effluent limitations, monitoring requirements, and other applicable conditions set forth in Parts I, II, III
and IV hereof.
This permit shall become effective 2019
This permit and authorization to discharge shall expire at midnight on December 31, 2023.
Signed this day 2018 •
Linda Culpepper,Interim Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1of7

Permit NC0020931
Grade II Biological WPCS [15A NCAC 08G.0302]
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 Town of Boonville is hereby authorized to:
1. Continue discharging up to 0.20 MGD of treated, 100%-domestic wastewater from a treatment
facility that includes the following components:
• Bar screen
• Splitter box
• Comminutor
• Aeration basins
• Secondary clarifiers
• Ultraviolet disinfection equipment
• Digesters
• Sludge drying beds
• Flow measurement
This facility is located at the Boonville Wastewater Treatment Plant off Lon Avenue(Boonville)
in Yadkin County.
2. Discharge wastewater from said treatment works via Outfall 001 into Tanyard Creek [Stream
Index: 12-64] (see attached map), currently a class C water in the Yadkin-Pee Dee River Basin [
HUC:030401011001].
Paget of7

Permit NC0020931
Grade II Biological WPCS [15A NCAC 08G.0302]
PART I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq., 02B.0500 et seq.]
During the period beginning on effective date of this permit and lasting until expiration,the Permittee is
authorized to discharge from outfall 001. Such discharges shall be limited and monitored) by the Permittee as
specified below:
PARAMETER LIMITS MONITORING REQUIREMENTS
Monthly Weekly Measurement Sample Sample Location
[eDMR code] Average Average Frequency Type
Flow[50050] 0.20 MGD Continuous Recording Influent or Effluent
BOD,5 day,20°C 3 30.0 mg/L 45.0 mg/L Weekly Composite Influent and Effluent
[C0310]
Total Suspended Solids3 30.0 mg/L 45.0 mg/L Weekly Composite Influent and Effluent
[C0530]
NH3 as N[C0610] Weekly Composite Effluent
pH[0400] >6.0 and<9.0 standard units Weekly Grab Effluent
Dissolved Oxygen Daily average<6.0 mg/L Weekly Grab Effluent
[00300]
Dissolved Oxygen Weekly Grab U2,D2
[00300]
Fecal Coliform
(geometric mean) 200/ 100 ml 400/ 100 ml Weekly Grab Effluent
[31616]
Temperature°C[00010] Daily Grab Effluent.
Temperature°C[00010] Weekly Grab U2,D2
Total Nitrogen
(NO2+NO3+TKN) Quarterly Composite Effluent
[C0600]
Total Phosphorus Quarterly Composite Effluent
[C0665]
Chronic Toxicity5 Quarterly Composite Effluent
[TGP3B]
Notes:
1. The permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR application
system. (See A(4).)
2. U:Upstream of the discharge. D: Downstream at NCSR 1367.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15%of the
respective influent value(85%removal).
4. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L. '
5. Chronic Toxicity(Ceriodaphnia)P/F at 81%;January,April, July, and October; (See A(2).)
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page3of7

Permit NC0020931
Grade II Biological WPCS [15A NCAC 08G.0302]
A. (2) CHRONIC TOXICITY PERMIT LIMIT (Quarterly)
[15A NCAC 02B.0200]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 81%. ,
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the"North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure,"Revised December 2010, or subsequent versions
or"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"(Revised-December 2010)or
subsequent versions.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.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the
permit limit,then multiple-concentration testing shall be performed at a minimum,in each of the two
following months as described in"North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised-December 2010)or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form(MR-1) for the months in which tests were performed,using the parameter code TGP3B for the
pass/fail results and THP3B for the Chronic Value. Additionally,DWR Form AT-3 (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,North Carolina 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,accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature.
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,monitoring will be
required during the following month.Assessment of toxicity compliance is based on the toxicity testing quarter,
which is the three-month time interval that begins on the first day of the month in which toxicity testing is
required by this permit and continues until the final day of the third month.
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
following the month of the initial monitoring.
Page 4 of 7

Permit NC0020931
Grade II Biological WPCS [15A NCAC 08G.0302]
A. (3) NUTRIENT REOPENER FOR HIGH ROCK LAKE
[NCGS 143.215.1 (b)]
This permit may be reopened and modified to implement nutrient requirements in accordance with any future
TMDL and/or nutrient management strategy for High Rock Lake.
A.(4) ELECTRONIC REPORTING OF 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)]
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.
Page 5 of 7

Permit NC0020931
Grade II Biological WPCS [15A NCAC 08G.0302]
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 Rule is found at:
http://www2.epa.gov/compliance/final-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
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.
Page 6 of 7

Permit NC0020931
Grade II Biological WPCS [15A NCAC 08G.0302]
. 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 cert, 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
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].
A. (5.) EFFLUENT MERCURY ANALYSIS
[15A NCAC 02B.0400 et seq., 02B.0500 et seq.]
The Permittee shall provide in conjunction with the next permit renewal application a minimum of one effluent
mercury analysis using EPA Method 1631E determined within 12 months prior to the application date.Any
additional effluent mercury measurements conducted from the effective date of this permit and up to the
application date shall also be submitted with the renewal application.
If the mercury analysis is not provided with the application,the application may be returned as incomplete and the
Permittee considered non-compliant.
Page 7 of 7

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Town of Boonville - Boonville WWTP N 1 `+* �r�r �R �
NPDES Permit NC0020931A ,�— ��:�,1��1;; .
I,5,000,000 _ s
Receiving Stream: Tanyard Creek Stream Class: C
Stream Segment: 12-64 Sub-Basin #: 03-07-02
River Basin: Yadkin-Pee Dee HUC: 030401011001
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zo.nno 36.246428°N, -80.706643°W
County: Yadkin 1