HomeMy WebLinkAboutNC0044776_Draft Permit_20201110 ,i STATE 4
k
ROY COOPER '
Governor j
MICHAEL S.REGAN 4404.%a.40,
Secretary
S.DANIEL SMITH NORTH CAROLINA
Direrror Environmental Quality
November 10, 2020
Mr. Gil Matthews,Mayor
Town of Hamilton
P.O. Box 249
Hamilton,North Carolina 27840
Subject: Draft NPDES Permit Renewal
Permit NC0044776
Hamilton WWTP
Martin County
Grade II Biological WPCS
SIC Code 4952
Dear Mr. Matthews:
Enclosed with this letter is a copy of the Draft NPDES permit renewal for your facility. Please
review this draft carefully to ensure thorough understanding of the requirements and conditions it
contains. There are several changes from the existing permit, including the following:
• The facility components list on the Supplement to Permit Cover Sheet was updated due to
modifications made at the plant.
• The Town reported Mercury at less than detection,with detection levels<200 ng/L,in
the Effluent Pollutant Scans and DMR results. The Town's allowable discharge
concentration is 47.0 ng/L. DWR's laboratory identifies the target Practical Quantification
Limits(PQLs)for Mercury as 1.0 ng/L,using EPA low-level method 1631E. 15A NCAC 2B
.0505 (e)(4)requires that all test procedures must produce detection and reporting levels that
are below the permit discharge requirements and all data generated must be reported to the
approved detection level or lower reporting level of the procedure. If no approved methods
are capable of achieving a detection level below the permit discharge requirement(or
allowable discharge concentration)the method with the lowest detection level must be used.
The Town should use sufficiently sensitive test methods for all pollutants,including when
performing Effluent Pollutant Scans.
• Some of the wording has changed in Special Condition A. (2.), Acute Toxicity Permit
Limit,please review each paragraph carefully.
• Special Condition A. (3.) has been modified to include the specific three years in which
the Effluent Pollutant Scan shall be performed(2022, 2023, and 2024). In addition, at the end
of the Special Condition, 2nd species Toxicity Testing Requirements for municipal permit
renewals per Federal Regulations [40 CFR 122.21(j)(5)] have been added.
• Federal regulations require electronic submittal of all discharge monitoring reports
(DMRs)and program reports.The requirement to continue reporting discharge monitoring data
electronically using the NC DWR's Electronic Discharge Monitoring Report(eDMR)internet
application has been added to your NPDES permit[See Special Condition A. (4.)].
D E
j North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1617 Mall Service Center I Raleigh.North Carolina 27699 1617
wrar\ /.° 919.707.9000
• A notation was made concerning the Electronic Reporting Rule — NPDES Electronic
Reporting Rule — Phase 2 Extension. EPA extended the Phase 2 deadline to December 21,
2025. The current compliance date, effective January 4, 2021, was extended as a fmal
regulation change published in the November 2,2020 Federal Register. [See A. (4)]
• Regulatory citations have been added to the permit.
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/3k5NFaL and can be viewed online or downloaded as a PDF file.
Concurrent with this notification the Division is publishing a notice in a newspaper having
circulation in the general Martin County area, soliciting public comments on this draft permit.
Please provide any written comments you may have to the following:NCDEQ/DWR,NPDES
Permitting Branch, 1617 Mail Service Center,Raleigh,NC 27699-1617 no later than 30 days
after receipt of 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 this
draft permit,please call me at(919)707-3613 or by email at Cassidy.Kurtz@ncdenr.gov.
Sincerely,
Ceveseid3 Kurtz
Cassidy Kurtz,Engineer
NPDES Municipal Permitting Unit
Hardcopy: NPDES Files
Ecopy: US EPA Region 4
DWR/Washington Regional Office/Water Quality/Robert Tankard
DWR/Operator Certification Program/Maureen Kinney
DWR/Aquatic Toxicology Branch/Cindy Moore,Zach Thomas
Hamilton WWTP/Kerry Spivey,ORC/Wastewater/Pretreatment Director
Page 2 of 2
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
DRAFT 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
P
regulations promulgated and adopted by the North Carolina Environmental Management Commission,and the
Federal Water Pollution Control Act,as amended,the
Town of Hamilton
is hereby authorized to discharge wastewater from a facility located at the
Hamilton Wastewater Treatment Plant
North Penco Road
south of Hamilton
Martin County
to receiving waters designated as the Roanoke River in the Roanoke River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I,II and III hereof.
This permit shall become effective Month XX,2020.
This permit and authorization to discharge shall expire at midnight on May 31, 2025.
Signed this day Month XX,2020.
DRAFT
for S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit NC0044776
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 Hamilton is hereby authorized to:
1. Continue to operate a 0.08 MGD wastewater treatment system that includes the following
components:
• Influent distribution tank
• Influent um station
pump
• Bar screens(2)
• Grit collection sumps
• Grit storage tank
• Flow equalization basin with air diffusers
• Aeration basins(2)with air diffusers
• Clarifiers(2)
• Aerobic sludge digester/storage basin
• Flow measurement device
• Cascade aeration
• Generator
This facility is located at the Hamilton WWTP, on North Penco Road, south of Hamilton
in Martin County.
2. Discharge from said treatment works at the location specified on the attached map into
the Roanoke River,a class C water in the Roanoke River Basin.
Page 2 of 9
Permit NC0044776
PART
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq.,02B.0500 et seq.]Grade II Biological Water Pollution Control System
[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 from Outfall 001. Such discharges shall be limited and
monitored' by the Permittee as specified below:
PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location
Flow 50050 0.08 MGD Continuous Recording Influent or Effluent
BOD,5-day,20°C 2 C0310 30.0 mg/L 45.0 mg/L Weekly Composite Influent and
Effluent
Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L WeeklyComposite Influent and
(TSS)2 9 9Effluent
Fecal Coliform
[geometric mean] 31616 Monitor and Report Weekly Grab Effluent
Total Residual Chlorine 50060 28 pg/L 2/Week Grab Effluent
[TRC]3
Ammonia [NH3 as N] C0610 Monitor and Report 2/Month Composite Effluent
Dissolved Oxygen [DO] 00300 Monitor and Report Weekly Grab Effluent
Temperature(°C) 00010 Monitor and Report Weekly Grab Effluent
Total Phosphorus (mg/L) C0665 Monitor and Report Quarterly Composite Effluent
Total Nitrogen 4(mg/L) C0600 Monitor and Report Quarterly Composite Effluent
Whole Effluent Toxicity 5 TGE6C Monitor and Report Quarterly Composite Effluent
pH 00400 Between 6.0 and 9.0 standard units Weekly Grab Effluent
Effluent Pollutant Scan NC01 Monitor and Report See Footnote 6 Effluent
FOOTNOTES: (cont.on next page)
1. Submit discharge monitoring reports electronically using the NC DWR's eDMR application system.
See section A.(4.).
2. The monthly average effluent BOD5 and TSS concentrations shall not exceed 15%of their
respective influent values(85%removal).
3. Total Residual Chlorine compliance is required if chlorine or chlorine derivative is used for
disinfection.The Division shall consider all effluent TRC values reported below 50 ug/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 ug/l.
4. For a given wastewater sample,TN=TKN+NO,-N+NO2-N,where TN is Total Nitrogen,TKN is
Total Kjeldahl Nitrogen,and NO,-N+NO2-N are nitrate and nitrite nitrogen,respectively.
5. Acute Toxicity P/F at 90%with testing in January,April,July and October(See Special Condition
A.(2.)).
6. The permittee shall perform three Effluent Pollutant Scans during the term of this permit. See
Special Condition A.(3.).
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Permit NC0044776
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A.(2.) ACUTE TOXICITY PASS/FAIL PERMIT LIMIT(QUARTERLY)
[15A NCAC 02B .0200]
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North
Carolina Procedure Document entitled"Pass/Fail Methodology For Determining Acute Toxicity In A
Single Effluent Concentration"(Revised December 2010,or subsequent versions). The monitoring shall
be performed as a Fathead Minnow (Pimephales promelas) 24-hour static test.The effluent concentration
at which there may be at no time significant acute mortality is 90% (defined as treatment two in the
procedure document).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.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing,this
monthly test requirement will revert to quarterly in the months specified above.
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 TGE6C.
Additionally,DWR Form AT-2 (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, ATForms.ATBAncdenr.gov.
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,then
monthly monitoring will begin immediately until such time that a single test is passed. Upon passing, this
monthly test requirement will revert to quarterly in the months specified above. 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 fmal
day of the third month.
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Permit NC0044776
Should any test data from either these monitoring requirements 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 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.) EFFLUENT POLLUTANT SCAN (Municipal POTWs)
[G.S. 143-215.1(b)]
The pernuttee shall perform a total of three(3)Effluent Pollutant Scans for all parameters listed below. One
scan must be performed in each of the following years: 2022, 2023, and 2024. Analytical methods shall be
in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are
present in concentrations greater than applicable standards and criteria. Samples should be collected with one
quarterly toxicity test each year, and must represent seasonal variation [i.e., do not sample in the same
quarter every year]. Unless otherwise indicated,metals shall be analyzed as "total recoverable."
Ammonia(as N) C0610 Trans-1,2-dichloroethylene 34546 Bis(2-chlo ro ethyl)ether 34273
Chlorine(total residua l,TRC) 50060 1,1-dichloroethylene 34501 Bis(2-chloroisopropyl) ether 34283
Dissolved oxygen 00300 1,2-dichloropropane C0541 Bis(2-ethylhexyl)phthalate CO100
Nitrate/Nitrite 00630 1,3-dichloropropylene 77163 4-bromophenylphenylether 34636
Kjeldahlnitrogen 00625 Ethylbenzene 34371 Butylbenzylphthalate 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaphthalene 34581
Phosphorus C0665 Methyl chloride 34418 4-chlorophenyl phenyl ether 34641
Total dissolved solids 70295 Methylene chloride 34423 Chrysene 34320
Hardness 00900 1,1,2,2-tetrachloroethane 81549 Di-n-butyl phthalate 39110
Antimony 01097 Tetrachloroethylene 34475 Di-n-octyl phthalate 34596
Arsenic 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34506 1,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-trichloroethane 34511 1,3-dichlorobenzene 34566
Chromium C0034 Trichloroethylene 39180 1,4-dichlorobenzene 34571
Copper - 01042 Vinyl chloride 39175 3,3-dichlorobenzidine 34631
Lead 3 ' 01051 Acid-extractable compounds: Diethyl phthalate 34336
Mercury(Method 1631E) COMER P-chloro-m-cresol 34452 Dimethyl phthalate 34341
Nickel 01067 2-chlorophenol 34586 2,4-dinitrotoluene 34611
Selenium 01147 2,4-dichlorophenol 34601 2,6-dinitrotoluene C0626
Silver 01077 2,4-dimethylphenol 34606 1,2-diphenylhydrazine 34346
Thallium 01059 4,6-dinitro-o-cresol 34657 Fluoranthene C0376
Zinc 01092 2,4-dinitrophenol 34616 Fluorene 34381
Cyanide 00720 2-nitrophenol 34591 Hexachlorobenzene C0700
Totalphenolic compounds 32730 4-nitrophenol 34646 Hexachlorobutadiene C0702
Volatile organic compounds: Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386
Acrolein 34210 Phenol 34694 Hexachloroethane 34396
Acrylonitrile 34215 2,4,6-trichlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403
Benzene 34030 Base-neutral compounds: Isophorone 34408
Bromoform 32104 Acenaphthene 34205 Naphthalene 34696
Carbon tetrachloride 32102 Acenaphthylene 34200 Nitrobenzene 34447
Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine 34428
Chlorodibromomethane 34306 Benzidine 39120 N-nitrosodimethylamine 34438
Page 5 of 9
Permit NC0044776
Chloroethane 85811 Benzo(a)anthracene C0526 N-nitrosodiphenylamine 34433
2-chloroethyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461
Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469
Dichlorobromomethane 32101 Benzo(ghi)perylene 34521 1,2,4-trichlorobenzene C0551
1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242
1,2-dichloroethane 32103 Bis(2-chloroethoxy)methane 34278
Reporting. Test results shall be reported electronically using the Division's eDMR system or on DWR
Form DMR-PPA-1(or on a form approved by the Director) by December 31 st of each designated sampling
year. The Permittee must at least report completion of the test in the eDMR system by entering "1"or
"Y"for parameter code NC01 -Annual Pollutant Scan. If utilizing the DWR Form submit to the
following address:
NC DEQ/DWR/NPDES Files, 1617 Mail Service Center,Raleigh, North Carolina 27699-1617.
Or the form may be uploaded at: https://edocs.deq.nc.gov/Forms/NPDES WW-EDMR-Supplemental-
Form
Additional Toxicity Testing Requirements for Municipal Permit RenewaL Please note that
Municipal facilities that are subject to the Effluent Pollutant Scan requirements listed above are also
subject to additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5).
The US EPA requires four(4)toxicity tests for a test organism other than the test species currently
required in this permit. The multiple species tests should be conducted either quarterly for a 12-month
period prior to submittal of the permit renewal application, or four tests performed at least annually in the
four-and one-half-year period prior to the application. These tests shall be performed for acute or chronic
toxicity,whichever is specified in this permit. The multiple species toxicity test results shall be filed with
the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Or,results can be sent to the email: ATForms.ATB(a,ncdenr.gov.
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements. Results should also be summarized in Part E
(Toxicity Testing Data)of EPA Municipal Application Form 2A,when submitting the permit renewal
application to the NPDES Permitting Unit.
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
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Permit NC0044776
• 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
Monitoring Report(eDMR)intemet 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 3 16(b)Annual Reports.
NPDES Electronic Reporting Rule—Phase 2 Extension.EPA extended the Phase 2 deadline to December 21,
2025.The current compliance date,effective January 4,2021,was extended as a final regulation change
published in the November 2,2020 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
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
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Permit NC0044776
at:https://www.federalregister.gov/documents/2015/10/22/2015-24954/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
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/aboutldivisions/water-resources/edmr
4. Sianatory 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 oflaw,that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that quaked personnel properly gather and
evaluate the information submitted.Based on my inquiry of the person orpersons who manage the system, or
those persons directly responsiblefor gathering the information, the information submitted is, to the best ofmy
knowledge and belief true,accurate,and complete.I am aware that there are significant penaltiesfor
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 8 of 9
1
Permit NC0044776
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Stream Cale:C 1 Location 4110111-
Town of Hamilton WWTP
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Page 9 of 9