HomeMy WebLinkAboutNC0021105_Draft Permit_20181219 ROY COOPER
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NORTH CAROLINA
Environmental Quality
December 19,2018
Matthew Christian,Town Manager
Town of Mount Gilead
P.O.Box 325
Mt. Gilead,North Carolina 27306
Subject: Draft NPDES Permit NC0021105
Mount Gilead WWTP
Grade III Biological WPCS [15A NCAC 08G .0302]
Montgomery County
Dear Mr. Christian:
Enclosed with this letter is a copy of the draft permit for your facility. Please review the draft very carefully to
ensure thorough understanding of the conditions and requirements it contains. Your permit is among several in the
Yadkin-Pee Dee River Basin that the Division has targeted for expedited renewal.
This draft contains no major changes from the existing permit:
• HUC and stream index number were added to site description(page 2)
• Regulatory citations were added as necessary
• Part I Section A. (4.)was updated to be current
• The outfall map was updated
With this notification, the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Montgomery 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 via email at
[emily.delduco@ncdenr.gov] or call 919-707-9125.
Sincerely,
.0.,63 ijeetzte__
Emily DelDuco
Environmental Specialist
NPDES Program
cc: NPDES files
D_Qd
North Carolina Department of Environmental Quality I Division of Water Resources
1617 Mail Service Center I Raleigh,North Carolina 27699-1617
919-707-9125
Permit NC0021105
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELAINATION SYSTEM
(NPDES)
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In compliance with the provisions of North Carolina General Statute 1'43;'215.1 other lawful standards
and regulations promulgated and adopted brjttie9North Carolina Environmental Management
Commission, and the Federal Water-Pollution Control Act, a ' ended, the
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is hereby authorized to disctiafge Wt./water from.alacility located at the
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to receiving Waters designated`atlie Pee=Dee,River in the Yadkin-Pee Dee River Basin in accordance
with effluent limitations,monitoring,requirements, and other conditions set forth in Parts I, II, III, and IV
hereof. "�J„
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This permit shall become effeetia'° J
This permit and authorization to discharge shall expire at midnight on January 31, 2024.
Signed this day
Linda Culpepper, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1of7
Permit NC0021105
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.
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The Town of Mount, Gilead
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is hereby authorized to: ' ,?
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1. continue to operate an existing 0.85 MGD wastewater treatment plant'that includes the following
components; \\ '
• manual bar screen \ ``
• mechanical grit removal �° �,�°
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• influent screw pumps : �`
• equalization basin , „, 4
• dual aeration basins \ �°
• dual clarifiers , \\°\
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• dual ultraviolet disinfection,units
• effluent flow meter °� '; "'�
• effluent pumps station and force main 'e ° N
• sludge dying'-beds \�// y - k; •
• sludge loading,station ( `t ,
located'at.the Mount Gilead W WTP.,4(263 Lilly's Bridge Road, Mt Gilead) in Montgomery County;
and
',
3. Discharge from said treatment works via Outfall 001 at a location specified on the attached map,
into the Pee Dee River '[Seam Segment 13-(15.5)], currently a classified WS-V,B waterbody
within Subbasin 03-07-10 of the Yadkin-Pee Dee River Basin [HUC: 030401040204].
Page 2 of 7
Permit NC0021105
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq., 02B.0500 et seq.]
Grade III Biological WPCS [15A NCAC 08G.0302] ,
During the period beginning on the effective date of the 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:
s
4 EFFLUENT ' LIMITS ' , , MONITORING.REQUIREMENTS 1
. CHARACTERISTICS- - . ,
IEDMR CODES] . Monthly Weekly Daily - Measurement Sample Sample
Average ' Average' Maximum Frequency Type ` Location
Flow(MGD) 50050 0.85 MGD '°4-, / Cinuous Recording Influent or
t e ��i/,� Effluent
Temperature(°C) 00010 ';`s, I) i4 )'. Grab Effluent
Dissolved Oxygen(mg/L) 00300 Daily average riotleSs,than 6.0 egIL 3/Week A, Grab Effluent
BOD 5-day,20 C(mg/L) �.• � y�',
C0310 4:0,mg/L 21.0 nig , : 3/Week C
(April 1-October 31)2 ,�1; omposite Effluent
BOD 5-da 20°C(mg/L) ,e A%t ,,,
y' ( g ) C0310 1�6.0 ing/L !-�24.0 mg/L w�y p Influent,
(November 1-March 31)2 3/Week Composite Effluent
Total Suspended Solids(mg/L)2 C0530 30.0 ing, 45:O/mg/L "` :,,t 3/Week Composite Influent,
W- Effluent
NH3-N(mg/L)Octob /;, ,,C0610; 2.0 mg/ 1'; 6.0 g/,L '*-4,-,, "`=,/ 3/Week Composite Effluent
(April 1-October 31) , ';;;a° ~` ,e-nr,IVV k.;V
NH3-N(mg/L) V,,ts° - .,> v.vm o .w w
4; C0610 , 17.0 mg/L 2flmg/L 3/Week Composite Effluent
'(November 1-March 31) ' ; -':', 41 v
Fecal Coliform(#/100m1)3 '1;'4 ;331616 ) ,.r 200/100 mL 40 ,i10 mL 3/Week Grab Effluent
am. i�.y
pH(su) ,,,�hre7, Q0400,,o' %'"?:6.0,and<90 standard units 3/Week Grab Effluent
„max � � �;,�%s
�' ( '�ie 0 500060° / `--.'> 28 L 3/Week Grab Effluent
Total Residual Chlor (µ 1�)���,',n, sir µFA
Total Nitrogen(TNAmg/L) '-Z >,
; ,CO600 , , , Monitoi&Report Quarterly Composite Effluent
TN=TKN+(NO2 N+NO3-N)
Total Phosphoric g,/L) ', '0665 Monitor&Report Quarterly Composite Effluent
Chronic Toxicity 5\ *,> TGP3$ Quarterly Composite Effluent
Mercury(ng/L)6 vv � - COl�%IERi ``'Monitor&Report Quarterly Grab Effluent
Footnotes: v ,/,vJ
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1. The permittee shall submit disc, a ge monitoring reports electronically using the Division's eDMR system
[see A. (4)]. ":r '
2. The monthly average effluent BODE and Total Suspended Solids concentrations shall not exceed 15 percent of the
respective influent value(85%removal). ,
3. Fecal Coliform shall be calculated using the geometric mean,according to the procedure detailed in Part II. Section A.
4. The Division shall consider all effluent TRC values reported below 50 µg/1 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/1.
5. Chronic Toxicity(Ceriodaphnia dubia)shall be performed as at 3.2%effluent concentration,during March,June,
September and December[See A. (3.)].
6. Low level mercury analysis using EPA Method 1631E for all effluent mercury sampling is required.
There shall be no discharge of floating solids or foam in other than trace amounts.
Page 3 of 7
i
. , Permit NC0021105
A. (2.) INSTREAM MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq., 02B.0500 et seq.]
Instream monitoring is required for the following parameters at the locations specified:
EFFLUENT _ , .
CHARACTERISTIC .., Measurement __ Sample _ , Sample
[PARAMETER CODES] . FREQUENCY _ ' ' TYPE : Locationl
June-Sept 3/weeka
pH(su) 00400q;e�, ` Grab U D
October-May 1/week ?�„
June-Sept 3/week ,r< ` ,
Dissolved Oxygen(mg/L) 00300 iF Grab U,D
October-May 1/week
June-Sept A/O/week ,,n.°
Temperature(°C) 00010 'Grabs U,D
October-May `,wj4p 1/week '
Footnotes:
1. U—Upstream at least 100 feet fromhc outfall, D-Downstream at least 100 feet from the outfall.
,er
Instream monitoring is provisionally waived VA mlightof the pernittee's participation in the
Yadkin-Pee Dee River Basip Asjociation.``ln tream irio*itoring'slia l be conducted as stated in this
��i %�mar � v„ > �r',�
permit should the permit e%e c`sits participation in4 e�Association.
/ce `ry;
A. (3.) CHRONIC TOXI ITS P RMIT LIMIT (QUARTERLY)
[15ANCAC 02B0200 f, ',a -.} ` ', ,
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The effluentsd scharge shall at no'time exhib observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentrafion�gf 3.2%.
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The permit holder shallmperform at a iiiiiiunum,quarterly monitoring using test procedures outlined in the"North
Carolina CeriodaphniizwChronic Effludrii"Bioassay Procedure,"Revised December 2010, or subsequent versions
or"North Carolina Phase lrChronic Whole Effluent Toxicity Test Procedure"(Revised-December 2010)or
subsequent versions.The testswill be performed during the months of March,June, September and
December. These months sigi f 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.
1
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:
Page 4 of 7
Permit NC0021105
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 OORC 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't'p of the aquatic'"toxicity(AT)test form indicating the
facility name,permit number,pipe number, county, and'he 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 thepermittee fail to monitor duringa month in wh ch`toxicit monitoringis re uired monitorin will be
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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 th`e month in which toxicity testing is
required by this permit and continues until the final day,of the third month.
\
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Should any test data from this'monitoring requirement or tests performed b\y the North Carolina Division of
Water Resources indicate(pot etiariinpacts to the receiving stream;this permit may be re-opened and modified to
include alternate monitoring requirements or limits. j - 2
NOTE: Failure to achieve test`conditions aslspeeified in the'cited document, such as minimum control organism
survival,minimum control organisnrreproduction;`and appropriate environmental controls, shall constitute an
invalid test and will fequire immediate follow-up testing to be-completed no later than the last day of the month
following the month of the initial monitoring.
•
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)1 •
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge
Page 5 of 7
Permit NC0021105
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) ,alternative forms'appr.9ved 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. '�� �'', C�
Regardless of the submission method,the first DMR islue on the lastYday 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: - . \
2
• Sewer`Overflc4/Bypass'Event Reports;
• Pretreatment•Program,AnnualReports, 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
Page 6 of 7
Permit NC0021105
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. -
f
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 authorityshall 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 tlie_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 Tarr,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 pe"nalty-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 7 of 7
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Town of Mount Gilead - Mount Gilead WWTP
NPDES Permit NC0021105 r *-,
,,5,000,000
Receiving Stream:Pee-Dee River Stream Class: WS-V,B
Stream Segment: 13-(15.5) Sub-Basin#: 03-07-10
River Basin:Yadkin-Pee Dee HUC: 30401040204 SCALE 35.201389°N, -80.0625°W
County: Montgomery 1:24,000