HomeMy WebLinkAboutNC0021849_20180403_Draft Permit ROY COOPER
Governor
`-" MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
Water Resources
ENVIRONMENTAL QUALITY
April 3, 2018
Mr. Charles A. Jones, Jr.
Town of Hertford
P.O. Box 32
Hertford, NC 27944-0032
Subject: Draft NPDES Permit NC0021849
Hertford WWTP
Perquimans County
Class WW-3
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. (3.) has been added to require electronic submission of effluent data.
reports (DMRs). Federal regulations require electronic submittal of all discharge
monitoring.
• Regulatory citations have been added to the permit.
• 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 having circulation in the general Perquimans 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 any questions
concerning this permit, please contact Emily Phillips at emily.phillips@ncdenr.gov or
(919) 807-6479.
Sin '11 //
c j
Emily Phillips
Compliance and Expedited Permitting Unit
cc: NPDES files
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 NC0021849
Class WW-3
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 Hertford
is hereby authorized to discharge wastewater from a facility located at the
Hertford Wastewater Treatment Plant
114 W. Grubb Street, Hertford
Perquimans County
to receiving waters designated as the Perquimans River in the Pasquotank 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
December 31, 2022.
Signed this day
DRAFT
Linda Culpepper
Interim Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7
Permit NC0021849
Class WW-3
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 Hertford is hereby authorized to:
1. Continue to operate a 0.7 MGD wastewater treatment system that includes the
following components:
• Dual Mechanical bar screens
• Dual Parshall flumes
• Grit removal system
• Influent pump station with three pumps
• Oxidation ditch
• Flow splitter
• Two (2) Secondary Clarifiers
• WAS pump station with dual pumps
• Dual automatic backwashing disk filters
• Chlorination using gaseous chlorine
• Dual 27,500 gallon chlorine contact chambers
• Dechlorination using sulfur dioxide gas
• Outfall diffuser
• One 55,000 gallon aerobic sludge digester
• One 328,000 gallon sludge holding basin, with fine bubble diffusers
• Sludge drying beds
• Sludge loading station for trucks
• Three (3) 125 kW back up generators with automatic transfer switches
This facility is located at the Hertford WWTP, in Perquimans County.
2. Discharge from said treatment works at the location specified on the attached
map into the Perquimans River, currently classified SC waters in the
Pasquotank River Basin.
Page 2 of 7
Permit NC002 1849
Class WW-3
Part I.
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of this permit and lasting until
expiration, the Permittee is authorized to discharge from outfall 002. Such discharges
shall be limited and monitored7 by the Permittee as specified below:
EFFLUENT DISCHARGE LIMITATIONS MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly Weekly Daily Measurement Sample Sample Location
(Parameter Codes) Average Average Maximum Frequency Type
Flow 0 7 MGD Continuous Recording Influent or Effluent
(50050)
BOD,5-Day,200C 2
(00310) 15.0 mg/L 22.5 mg/L 3/Week Composite Influent and Effluent
(April 1 —October 31)
BOD,5-Day,200C 2
(00310) 30.0 mg/L 45 0 mg/L 3/Week Composite Influent and Effluent
(November 1—March 31)
Total Suspended Solids2 30.0 mg/L 45.0 mg/L 3/Week Composite Influent and Effluent
(00530)
NH3 as N (00610) 4 0 mg/L 12.0 mg/L 3/Week Composite Effluent
(April 1 —October 31)
NH3 as N (00610) 8,0 mg/L 24.0 mg/L 3/Week Composite Effluent
(November 1 —March 31)
Dissolved Oxygen 3 3/Week Grab Effluent
(00300)
Dissolved Oxygen (00300) Upstream&
(June 1 —September 30) 3lWeek Grab Downstream
Dissolved Oxygen (00300) Upstream&
(October 1 —May 31) Weekly Grab Downstream
Enterococci (61211) 35/100 ml 276/100 ml 3/Week Grab Effluent
(geometric mean)
Total Residual Chlorine 4
(TRC) 13 pgIL 3/Week Grab Effluent
(50060)
Temperature Daily Grab Effluent
(00010)
Temperature (00010) Upstream&
(June 1 —September 30) 3/Week Grab Downstream
Temperature (00010) WeeklyGrab Upstream&
(October 1 —May 31) Downstream
Total Phosphorus Quarterly Composite Effluent
(00665)
Total Nitrogen (00600)
(NO2+NO3+TKN) Quarterly Composite Effluent
pH s
(00400) 3/Week Grab Effluent
Total Mercury See Note 6 Grab Effluent
(71900)
Page 3 of 7
Permit NC0021849
Class WW-3
FOOTNOTES
1. Upstream = At least 100 feet upstream from the confluence with the Perquimans River.
Downstream =At least 100 feet downstream from the confluence with the Perquimans River.
2. The monthly average effluent BODS and total suspended solids concentrations shall not exceed
15% of their respective influent values (85% removal).
3. The daily effluent dissolved oxygen concentration shall not be less than 5.0 mg/L
4. Limit and monitoring apply only if chlorine or chlorine derivatives are used for disinfection. The
Division shall consider all effluent TRC values reported below 50 µg/L to be in compliance with the
permit. However, the Permittee shall record and submit all values reported by a North Carolina
certified laboratory (including field certified), even if these values fall below 50 µg/L.
5. The pH shall not be less than 6.8 standard units nor greater than 8.5 standard units.
6. See Condition A. (2) for mercury monitoring and reporting requirements.
7. Permittee shall submit discharge monitoring reports electronically using the Division's eDMR
system [see A. (3.)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (2.) EFFLUENT MERCURY ANALYSIS
[G.S. 143-215.66]
The Permittee shall provide one effluent mercury analysis, using EPA Method 1631 E,
in conjunction with the next permit renewal application. The analysis should be taken
withm 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 result of the mercury analysis is not provided with the application, the application
may be returned as incomplete and the Permittee considered non-compliant.
A. (3.) 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
Page4of7
Permit NC0021849
Class WW-3
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.
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 DENR / 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.
Page 5 of 7
Permit NC0021849
Class WW-3
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/2015/10/2212015-24954/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 monitonng 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:
http://deq.nc.gov/about/divisions/water-resources/edmr
Page 6 of 7
Permit NC0021849
Class WW-3
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.)i
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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Latitude: 362 4' 51"
aidiiiirii
Longitude: 762 28' 7" NCOO21849 I Facility
Stream Class:SC Town of Hertford Location
Sub-basin: 03-01-52 WWTP
Receiving Stream: Perquimans
River North Perquimans County