NC0079057_Permit (Issuance)_20130225

NPDES DOCUWEMT SCANNIMG COVER SHEET
NPDES Permit: NC0079057
Manteo WWTP
Document Type: ' 'Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Speculative Limits
Complete File - Historical
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date: February 25, 2013
ThiB document Im printed on reueBe paper.-ignore any
content on t[xe rezrex-ae Bide

A4
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Pat McCrory Charles Wakild, P. E. John E. Skvarla, III
Governor Director Secretary
February 25,2013
Mr. Nathan Pharr
Utilities Superintendent
Town of Manteo-
P.O.Box 246
Manteo, North Carolina 27954
Subject: Issuance of NPDES Permit
NCO079057
Town of Manteo WWTP
Dare County
Facility Class III
Dear Mr. Pharr:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly,we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to
the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as
subsequently amended).
The following changes have been incorporated into this permit renewal:
• The special condition A. (4.) was updated.
• The Mercury TMDL rcopener condition was added to the permit to notify you about TMDL
implementation (Please see A. (5)).
If any parts, measurement frequencies or sampling requirements containedui this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within dirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming to
Chapter 150I3 of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made,
this decision shall be final and binding.
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604
Phone:[phone] FAX:[phone]
Internet:wvnv.ncwatemualitv,orci 7�7One�t,
An Equal Opportunity I AFfrmative Action Employer 1�Oru1('`-'earolina
Naturally

Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and rcissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be requ red by the Division of Water Quality or pert-nits
required by the Division of Land Resources;the Coastal Atca Management Act or any other Federal or
Local governmental permit that may be required. If you have any questions concerning this permit, please
contact Sergei Chetnikov at telephone number [phone].
Sincerely,
Charles WaUd P.E.
cc: Central Files
INPDES Files
Washington Regional Office/ Surface Water Protection Section
Aquatic Toxicology Unit(e-copy)

Permit NCO079057
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
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 Manteo
is hereby authorized to discharge wastewater from a facility located at the
Manteo WWTP
U.S. Highway 64/264
Manteo
Dare County
to receiving waters designated as Shallowbag Bay 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 April 1, 2013.
This permit and authorization to discharge shall expire at midnight on December 31, 2017.
Signed this day February 25, 2013.
&Qa6rlesWakild, P.E.
,,1Division of Water Quality
By Authority of the Environmental Management Commission

Permit NCO079057
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDI S 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 facilty arises under the permit conditions,requirements,terms, and
provisions included herein.
The Town of Manteo is hereby authorized to:
1. Continue to operate a 0.6 MGD wastewater treatment plant that includes the
following components:
Mechanical bar screen
Grit chamber
Aeration basin
• Two standard clarifier units
• Tertiary traveling bridge filters
Chlorine disinfection
• Dechlorination
• Post aeration
pH adjustment
Sludge holding tank
Sludge digester
Standby power
This facility is located at the Manteo WWTP, off US Highway 64/264 south of
Manteo in Dare County.
2. After receiving an Authorization to Construct (ATC) from the Division, expand the
facility to achieve up to 1.0 MGD treatment capacity.
3. Discharge from said treatment works at the location specified on the attached
map into Shallowbag Bay, classified SC waters in the Pasquotank River Basin.

N (1 ❑ C Ci y
G
n �'�. Cry Y Y t F t Yam, f K ` ..{ t )&� W L\+ •� }� � u >` / f�6� q �Y/�L[ T ��1��rk _
_ to 5 � I � r r � ._r" r nn,<}f3^; Y kt:y ? } 1 } + � t� \ v`t;,. $v t� 8 p �"a " �/ � ^•�i
V� w A to I a� : 9 r r 9r�'Y- y } i 1��l € � // ( � �•`+ Y p c
'.c y}k } } r L ,r aT✓�: f \ so � � x �a � 1���7f .
IB
t i lit
�4# }r I F } a
� � �� �' ��Is i�yr��id �+ M��}{k}�} # ( a "}�� ! j � ��• � .� Is so �•� � r c at
t,j1+ i444Y� O� .r t ♦ "•. r � t a �•�. J 4s/ 1 v i '.
m V ,+ -A 414 }� �r y} If 1 �4.{ 414++a r i tt �C�_E.'. ps ..''¢, \ T � 9 � .-✓�O i �'\ J se s.or o ,
o c '� 5 k �I }'' : { §i { : �S� y, �i .•. i r E ��� s B�o o t5 �� '��
o k F t , t � a 4.• 1� r _
:.z j d 9 %.�'/ 'iY 6d`� .� s i � ai +�'a .� P i% -� tl�j�:i P t+ '� ,-, u a i f. k....4•'
r ,�\f�•a4. ��• .�. ,a.. �'�[ � 1i[} �i { �' '/ o- ` 4 +M�4+ 4�,�� / i� ��� �,' a 4 ra_
.: } i ?. c // . >o`\'e �• rn [I}\h} �} eG,'�' 0 f r is - '"T 4 t}a [ 1 �+1� f� .?' r 1 } i
•u � gel aa� �• i. \® • 4 5 i i � -. T YY t 1 Y I r}P1 .� N � ��� 1\'� � .�
y./:_ r\ •vo �:as �`a ��l it t 'J..Yr� 3 .. � Yzo O ', r x.� Y [ -n
•[ {t i�Idi +1 # ..�Vs�' Sry { , ivt}^cJ �{ p< <} ..v�11 sa ��q1 �a� � y { _:— .r.
°d+ }Ik }' ll } r\ rt x.
�' `—' 9a , 1,1 + + +}e • ii{fi '1
wd l
o � f
• :y l ..�� �il}4} .yl } !, l y 1 }.4, i 14: : { :S. { 0'4 �k' Fi[i 1 } III�F � k.� v m Fs a �M` a n � .
I }�+ i'
+4 : 1✓rIS4 { [ ++ i , r + a: - ; r } r lri ' ` `---�.
L � b
iv
}+
��� grg Sri 41I'l
('c� 4qA :�✓'�@�.#t,} } f.4 +ti �}�i i i� v n y .r n � i, S r a f \
y! y. s4 1.'^.#}++ 11 41' + c� '�.. 7:- z�. a[.sv..z.0 . �.� . .�.�� . n•.., >

Permit NCO079057
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.6 MGD)
During the period beginning on the effective date of this permit and lasting until expansion above 0.6 MGD or
expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by
the Perrnutee as specified below:
fEF,FLUENT ;:,tom zx PQ � y b f LIMITS r w e _ JMONIT�ORINVREQUIREMENTS '' g
CHARACTERISTICS ,�
' Q„t,` i., r^fi ,thy i+ _Monthly ; rWeekly _ , Daily 1 Measurement SamplegType µSample'Locafion:
Average._ _ Average_ , 'Maximum, �tF�equenc i,
Flow 0.6 MGD Continuous Recording Influent or Effluent
BOD5,20°C(April 1-October 31 2 5.0 m IL 7.5 m IL 3Meek Composite Effluent, Influent
BOD5,20°C November 1-March 31 2 10.0 m IL 15.0 m IL 3Meek Composite Effluent, Influent
Total Suspended Solids2 30.0 m /L 45.0 m /L 3Meek Composite Effluent, Influent
NH3 as N April 1 -October 31 2.0 m /L 6.0 m IL 3/Week Composite Effluent
NH3 as N November 1-March 31 4.0 m /L 12.0 m /L 3Meek Composite Effluent
Dissolved Oxygen3 3Meek Grab Effluent
Enterococci 35/100 mL 276/100 mL 3Meek Grab Effluent
H 6.8-8.5 standard units 3Meek Grab Effluent
Tem erature'°C Daily Grab Effluent
Total Nitrogen NO2+NO3+TKN Quarterly Composite Effluent
Total Phosphorus Quarterly Composite Effluent
Total Zinc Quarterly Composite Effluent
Acute Toxicily4 Quarterly Composite Effluent
Total Mercury5 Once/5 years Grab Effluent
Total Residual Chlorines 13 IL 3Meek Grab Effluent
Total K'eldahl Nitrogen TKN Weekl Com osite I Effluent
Temperature °C
Dissolved Oxygen See Footnote 1
Salinity Instream Monitoring
pH
Notes:
1. All instream monitoring samples shall be instantaneous samples. These shall be collected three times
per week during June, July, August, and September, and once per week during the rest of the year.
They shall be collected as grab samples at one-foot intervals vertically throughout the water column.
Instream sampling locations are as follows: 1) at the mouth of Douglas Creek, 2) near the mouth of
Scarboro Creek, 3) in Shallowbag Bay approximately 800 feet northeast of Sandy Point, 4) in
Shallowbag Bay approximately 0.4 miles southeast of Ballast Point, and 5) in Roanoke sound
approximately 200 feet outside of Shallowbag Bay.
2. The monthly average BOD5 and Total Suspended Solids (TSS) concentrations shall not exceed 15% of
the respective influent value (85% removal).
3. The daily average dissolved oxygen concentration shall not be less than 6. 0 mg/L.
4. Whole Effluent Toxicity shall be measured by the Acute Toxicity (P/F) test using fathead minnow at
90%. Testing shall be conducted in February, May, August and November (see condition A. (3)).
5. The facility shall employ method 1631E.
6. Monitoring requirement applies only if chlorine is added for disinfection: The Division shall consider
all effluent TRC values reported below 50 pg/L 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 pg/L.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit NC0079057
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (1.0 MGD)
During the period beginning after expansion above 0.6 MGD 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:
EFF.LUENTi"? ' ' rn rLIMITS Z u .iMONITORINGIREQUIREMENTS c `r:_
CHARACTERISTICS
Monthly „ 'rWeekly , ,Daily ,;' Measurement N Sample [Sample Locabon,
Average § Avera a ,4 ,Maximum`
Flow 1.0 MGD Continuous Recording Influent or Effluent
BODs,20°C(April 1-October 31 s 5.0 m /L 7.5 m IL 3/Week Composite Effluent, Influent
BODs,200C November 1-March 31 z 10.0 m /L 15.0 m IL 3/Week Composite Effluent, Influent
Total Suspended Solids2 30.0 m IL 45.0 m /L 3Meek Composite Effluent, Influent
NH3 as N(April 1 -October 31 2.0 m IL 6.0 m IL 3Meek Composite Effluent
NH3 as N November 1-March 31 4.0 m IL 12.0 mg/L 3Meek Composite Effluent
Dissolved Oxygen3 3Meek Grab Effluent
Enterococci 35l 100 ml- I 276/100 mL 3Meek Grab Effluent
pH 6.8-8.5 standard units 3Meek Grab Effluent
Temperature °C Daily Grab Effluent
Total Nitrogen NO2+NO3+TKN Quarterly Composite Effluent
Total Phosphorus Quarterly Composite Effluent
Total Zinc Quarterly Composite Effluent
Acute Toxicit a Quarterly Composite Effluent
Total K'eldahl Nitrogen TKN Weekly Composite Effluent
Priority Pollutant Anal siss
Total Residual Chlorines 13 IL 3/Week Grab Effluent
Temperature °C
Dissolved Oxygen See Footnote 1
Salinity Instream Monitoring
pH
Notes:
1. All instream monitoring samples shall be instantaneous samples. These shall be collected three times
per week during June, July, August, and September, and once per week during the rest of the year.
They shall be collected as grab samples at one foot intervals vertically throughout the water column.
Instream sampling locations are as follows: 1) at the mouth of Douglas Creek, 2) near the mouth of
Scarboro Creek, 3) in Shallowbag Bay approximately 800 feet northeast of Sandy Point, 4) in
Shallowbag Bay approximately 0.4 miles southeast of Ballast Point, and 5) in Roanoke sound
approximately 200 feet outside of Shallowbag Bay
2. The monthly average BODs and Total Suspended Solids (TSS) concentrations shall not exceed 15% of
the respective influent value (85% removal).
3. The daily average dissolved oxygen concentration shall not be less than 6. 0 mg/L.
4. Whole Effluent Toxicity shall be measured by the Acute Toxicity (P/F) test using fathead minnow at
90%. Testing shall be conducted in February, May, August and November (see condition A. (3)).
5. See Condition A. (4) for the Priority Pollutant Analysis requirements.
6. Monitoring requirement applies only if chlorine is added for disinfection. The Division shall consider all
effluent TRC values reported below 50 pg/L 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 lag/L.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit NCO079057
A. (3) ACUTE TOXICITY PERMIT LIMIT (Quarterly)
The Permittee shall conduct acute toxicity tests on a ua ader basis using protocols defined in the North Carolina
Procedure Document entided "Pass/Fail Methodology For Determining Acute Toxicity In A Single Effluent
Concentration'(12evised July, 1992 or subsequent versions).The monitoring shall be performed as a Fathead Minnow
(Pimephales promelat) 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).Effluent samples for self-
monitoring purposes must be obtained during representative effluent discharge below all waste treatment.The tests will
be performed during the months ofFebruary, May,August and November.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring
Form (MR-1) for the month in which it was performed,using the parameter code TGE6C. Additionally,DWQ Form
AT-2 (original)is to be sent to the following address:
Attention: NC DENR/ DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental 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 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 Environmental Sciences Section at the address cited
above.
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.
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.
Should any test data from either these monitoring requirements or tests performed by the North Carolina Division of
Water Quality indicate potential impacts to the receiving stream, this permit may be re-opened and modified to include
alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such monitoring shall
be included in the calculation & reporting of the data subinuted on the DMR&all AT Forms submitted.
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.

Permit NCO079057
A. (4) EFFLUENT POLLUTANT SCAN (only requited upon expansion to 1.0 MGD)
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. The 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. Sampling dates shall
represent seasonal variation. Unless otherwise indicated, metals shall be analyzed as"total recoverable."
Ammonia (as N) Trans-1,2-dichloroethylene Bis(2-chloroethyl) ether
Chlorine (total residual, TRC) 1,1-dichloroethylene Bis (2-chloroisopropyl) ether
Dissolved oxygen 1,2-dichloropropane Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether
Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate
Oil and grease Methyl bromide 2-chloronaphthalene
Phosphorus Methyl chloride 4-chlorophenyl phenyl ether
Total dissolved solids Methylene chloride Chrysene
Hardness 1,1,2,2-tetrachloroethane Di-n-butyl phthalate
Antimony Tetrachloroethylene Di-n-octyl phthalate
Arsenic Toluene Dibenzo(a,h)anthracene
Beryllium 1,1,1-trichloroethane 1,2-dichlorobenzene
Cadmium 1,1,2-trichloroethane 1,3-dichlorobenzene
Chromium Trichlomethylene 1,4-dichlorobenzene
Copper Vinyl chloride 3,3-dichlorobenzidine
Lead Acid-extractable compounds: Diethyl phthalate
Mercury (EPA Method 1631E) P-chloro-m-cresol Dimethyl phthalate
Nickel 2-chlomphenol 2,4-dinitrotoluene
Selenium 2,4-dichlorophenol 2,6-dinitrotoluene
Silver 2,4-dimethylphenol 1,2-diphenylhydrazine
Thallium 4,6-dinitro-o-cresol Fluoranthene
Zinc 2,4-dinitrophenol Fluorene
Cyanide 2-nitrophenol Hexachlorobenzene
Total phenolic compounds 4-nitrophenol Hexachlorobutadiene
Volatile organic compounds: Pentachlorophenol Hexachlorocyclo-pentadiene
Acrolcin Phenol Hexachloroethane
Acrylonitrile 2,4,6-trichlorophenol Indeno(1,2,3-ed)pyrene
Benzene Base-neutral compounds: Isophorone
Bromoform Acenaphthene Naphthalene
Carbon tetrachloride Acenaphthylene Nitrobenzene
Chlorobenzene Anthracene N-nitrosodi-n-propylamine
Chlorodibromomethane Benzidine N-nitrosodimethylamine
Chloroethane Benzo(a)anthracene N-nitrosodiphenylamine
2-chloroethylvinylether Benzo(a)pyrene Phenanthrene
Chloroform 3,4 benzofluoranthene Pyrene
Dichlorobromomethane Benzo(ghi)perytene 1,2,4-trichlorobenzene
1,1-dichloroethane Benzo(k)tluoranthene
1,2-dichloroethane Bis (2-chloroethoxy) methane
Reporting. The effluent pollutant scan shall be performed once/year during 2014,g2015;and 20_16, and test results
shall be reported to the Division on DWQ Form-A MR-PPA1 or in a form approved by the Director by December 31$t of
each designated sampling year. The report shall be submitted to the following address: NC DENR / DWQ / Central
Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
A. (5) PERMIT RE-OPENER: MERCURY TMDL IMPLEMENTATION
The Division may, upon written notification to the permittee, re-open this permit in order to incorporate or
modify effluent limitations and monitoring and repotting requirements when such action is necessary to
implement a TMDL for mercury approved by the U.S. EPA.

i
Y
Nt
Public Notice
North Carolina Envlmnmental
Management Commission/NPDES Unit
1617 Mail Service Center
Raleigh;NC 27699-1617
Notice of in t to Issue a NPDES
Wastewater Permit
The North Carolina Environmental
Management Commission proposes to
issue a NPDES wastewater discharge
permit to the person(s) listed below.
Written comments regarding the pro-
posed permit will be accepted until 30 l
days after the publish date of this
notice.The Director of the NC Division
of Water Quality (DWQ) may hold a
public hearing should there be a signifi- j
ant degree of public interest. Please l
mail comments and/or Information
requests to DWQ at the above address,
Interested Persons may visit the DWQ at
512 N.Salisbury Street, Raleigh, NC to
review information on file. Additional
information on NPDES permits and this
notice may be found on our website:
httpJ/portal.ncdenr.org/weh&vghwpW
npdeyalendar, or by calling (919)
807.6390.
IMETownof—of requested
renewal of pennittlIC0079057_for Man-
teo WWTP in Dare County;this facility
discharg9e is treated municipal wastewa-
ter to Shallowbag Bay,Pasquotank R'rver
Basin.
11/13
1

DENR/DWQ F I L
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES Permit NCO079057
Facility Information
Applicant/facility Name: Town of Manteo/Manteo WWTP
Applicant Address: P.O. Box 246; Manteo,North Carolina 27954
Facility Address: Off U.S. Highway 64-264; Manteo,North Carolina 27954
Permitted Flow 0.6 MGD/1.0 MGD (phasedpermit)
Type of Waste: 100 % domestic
Facility/Permit Status: Class III
County: Dare County
Miscellaneous
Receiving Stream: Shallowbag Bay Regional Office: Washington WaRG
Stream Classification: Sc State Grid/USGS Quad: D36NW
303(d)Listed? Yes(Hg- Permit Writer: Sergei Chernikov,
statewide) Ph.D.
Subbasin: 03-01-51 Date: August 28, 2012
Drainage Area(mi): N/A
7Q10 (cfs) Tidal
30Q2 (cfs) Tidal 1 l
Average Flow(efs): Tidal
IWC (%): 90%
Lat. 350 54'24"N Long. 750 39'28"W
Summary
The Manteo WWTP is a Class III municipal facility without pretreatment program (Class 111). It has a
phased permit for 0.6 MGD and 1.0 MGD.
Basin Plan/303(d)
This facility discharges to Shallowbag Bay in subbasin 03-15-01 of the Pasquotank River Basin. The Bay
is classified SC waters. Shallowbag Bay is not listed as impaired on the 303(d) list.
COMPLIANCE
The Town has received only one NOV during the previous permit term for violation ammonia limit in
2011.
Whole Effluent Toxicity — the permit requires a quarterly acute Pass/Fail test using fathead minnow, 24
hour test. The Town has passed all tests since January 2008.
PERMITTING STRATEGY
Waste Load Allocation (WLA)
The Division prepared the last WLA during 2003 permit renewal.The previous and current effluent limits
were based on guidelines and water quality standards. The Division has judged previous parameters and
limits to be appropriate for renewal with some exceptions as noted below.
SUMMARY OF PROPOSED CHANGES
• The special condition A. (4.) was updated.
• The Mercury TMDL reopener condition was added to the permit to notify the permittee about
upcoming TMDL implementation (Please see A. (5)).
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: September 11,2012
Fact Sheet
NPDES N00079057 Renewal
Page 1

}Permit-Scheduled torIssue: December 3,2012
t
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please contact
Sergei Chernikov at(919) 807-6393.
REGIONAL OFFICE COMMENTS
NAME: DATE:
Pact Sheet
NPDBS A 0079057 Renewal
Puce 2

;OFTOWN
PRESERVE
PROSPER
Water and Sewer Department
May 29, 2012
Mrs. Dina Sprinkle
NC DENR/ DWQ/ NPDES
161-7 Mail Service Center
Raleigh, NC 27699-1617
SUBJECT: OFFICIAL REQUEST FOR PERMIT RENEWAL OF TOWN OF MANTEO WWTP
PERMIT No. NCO079057
Manteo WWTP
Dare County
Please take this letter as the official request for the renewal of the Town's Wastewater Treatment Plant
NPDES Permit. All applicable applicant information has been provided in this packet including this cover
letter,the completed application form (EPA FORM 2A, Part A-C) and our sludge management plan for the
facility.
No physical changes have been made at the plant since the issuance of our last permit except for the addition
of a SCADA system in 2009. The SCADA system provides 24-hours-a-day telemetry with internet access and
password protection for all WWTP process units as well as an operational programmable control system for
several control units. The control units include the Influent Pump Station,the Oxidation Ditch aerators, the
Return Pump Station, the liquid feed chemical pumps for chlorination and de-chlorination and the Effluent
Pump station. The SCADA system also monitors all of the Town's lift stations. No operational controls are
installed for the lift stations in the SCADA system.
Sincerely,
Nathan Pharr
i 11% F—
Town of Manteo Utilities Superintendent I MAY 3 0 20i2
Manteo WWTP ORC
Permit No. NCO079057 DENR-WATER QUALITY
Dare County L POINI SOUriCE SPANCH
1

ToFTowN 0
.n.
PRESERVE lil��_ �-
PROSPER
Water and Sewer Department
May 29, 2012
Mrs. Dina Sprinkle
NC DENR/ DWQ/ NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
SUBJECT: DESCRIPTION OF SLUDGE MANAGEMENT PLAN
PERMIT No. NCO079057
Manteo WWTP
Dare County
Our sludge is wasted from our Secondary Clarifiers based on determination of MLSS, SVI, temp and other
operational factors. We closely monitor all lab results as well as fixed probes within our process units that
communicate with our SCADA system to make these decisions. The WAS is moved from our Clarifiers
manually to an aerobic digester where it is aerated for the appropriate amount of time based on the season
for proper digestion of solids. When there is no available volume left in the Digester, we turn the aerator off
to allow the sludge to settle and are able to return a clear supernatant back to the Headworks of the
Treatment Plant. Once done with decanting, the aerator is returned to working order. At the point that the
sludge blanket in the Digester is too high that it effects the quality of supernatant, we then move the
thickened blanket to our Sludge Holding Lagoon for storage and further aeration and mixing.
We operate the Sludge Holding Lagoon in the same manner as the Digester for further digestion and
thickening of solids. When the Sludge Holding Lagoon has reached the appropriate percentage of solids, we
stabilize the sludge by raising the pH to above 12 standard units for 24 hours. Once the stabilization has been
achieved, the sludge is hauled by truck and land applied. The hauling is conducted by a contracted company
as well as the land application of sludge.
Sincerely, - —
Nathan Pharr
Town of Manteo Utilities Superintendent DJ ! I V tS
Manteo WWTP ORC
Permit No. NCO079057 MAY 3 0 2012
Dare County
rDEP'R-V.!OTon 1;W iry .
1

FACILITY NAME AND PERMIT NUMBER: Form Approved 1114199
TOWN OF MANTEO WWTP-NC0079057 OMB Number 2040-0086
FORM
2A NPDES FORM 2A APPLICATION OVERVIEW
NPDES
,r
APPLICATION OVERVIEW
Form 2A has been developed in a modular format and consists of a 'Basic Application Information" packet and
a "Supplemental Application Information" packet. The Basic Application Information packet is divided into two
parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or equal to 0.1
mgd must also complete Part B. Some applicants must also complete the Supplemental Application
Information packet. The following items explain which parts of Form 2A you must complete.
BASIC APPLICATION INFORMATION:
A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment
works that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.
B. Additional Application Information for Applicants with a Design Flow>0.1 mgd. All treatment works that have design
flows greater than or equal to 0.1 million gallons per day must complete questions BA through 13.6.
C. Certification. All applicants must complete Part C (Certification).
SUPPLEMENTAL APPLICATION INFORMATION:
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and
meets one or more of the following criteria must complete Part D (Expanded Effluent Testing Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
E. Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E(Toxicity
Testing Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
F. Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users(SIUs)or receives RCRA or CERCLA wastes must complete Part F(Industrial User Discharges and
RCRA/CERCLA Wastes). SIUs are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations(CFR)403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain
exclusions);or.-__-.
b. Contributes.a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant, or
G. Is designated as an SIU by the control authority.
G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G (Combined Sewer
Systems).
I�Co !' f1Ml n
ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION) U
NIAY �R ZO1Z
N -WATER QUALITY
UINT
S
QUE BP.ANCHH
EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 1 of 21

FACILITY NAME AND PERMIT NUMBER: Form Approved 111499
TOWN OF MANTEO WWTP-NC0079057 OMB Number 2040-0086
BASIC'APPLICATION INFORMATION
PART A. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS:
All treatment works must complete questions A.1 through A.8 of this Basic Application Information packet.
A.I. Facility Information.
Facility name TOWN OF MANTEO WWTP
Mailing Address PO BOX 246 MANTEO NC 27954
Contact person JOSHUA O'BRIEN
Title CHIEF PLANT OPERATOR BACKUP ORC
Telephone number [phone]
Facility Address 710 BOWSERTOWN RD. MANTEO NC 27954
(not P.O.Box)
A.2. Applicant Information. If the applicant is different from the above, provide the following:
Applicant name NATHAN PHARR
Mailing Address PO BOX 246 MANTFO N(.. 27954
Contact person NATHAN PHARR
Title UTILITIES SUPERINTENDENT ORC
Telephone number f252)305-3491
Is the applicant the owner or operator(or both)of the treatment works?
owner operator
Indicate whether correspondence regarding this permit should be directed to the facility or the applicant.
facility applicant
A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment
works(include state-issued permits).
NPDES—NCO079057_ - _ __ _ . . __ . .- PSD
UIC Other
RCRA Other
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of
each entity and, if known, provide information on the type of collection system(combined vs.separate)and its ownership(municipal, private,
etc.).
Name Population Served Type of Collection System Ownership
MANTEO COLLECTION 1434 SEPARATE MUNICIPAL
Total population served 1434 -
EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 2 of 21

FACILITY NAME AND PERMIT NUMBER: Form Approved 1114199
TOWN OF MANTEO WWTP- NC0079057 OMB Number 2040-0086
A.S. Indian Country.
a. Is the treatment works located in Indian Country?
Yes V No
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from(and eventually flows
through)Indian Country?
Yes No
A.6. Flow. Indicate the design flow rate of the treatment plant(i.e.,the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time
period with the 12th month of"this year"occurring no more than three months prior to this application submittal.
a. Design flow rate 0.60 mgd
Two Years Ago Last Year This Year
b. Annual average daily flow rate 0.31 0.29 0.30 mgd
c. Maximum daily flow rate 0.90 0.70 1,00 mgd
A.7. Collection System. Indicate the type(s)of collection system(s)used by the treatment plant. Check all that apply. Also estimate the percent
contribution(by miles)of each.
Separate sanitary sewer 100.00
Combined storm and sanitary sewer
A.8. Discharges and Other Disposal Methods.
a. Does the treatment works discharge effluent to waters of the U.S.? Yes No
If yes,list how many of each of the following types of discharge points the treatment works uses:
i. Discharges of treated effluent 1
ii. Discharges of untreated or partially treated effluent
iii. Combined sewer overflow points
iv. Constructed emergency overflows(prior to the headworks)
v. Other
b. Does the treatment works discharge effluent to basins,ponds,or other surface
impoundments that do not have outlets for discharge to waters of the U.S.? Yes No
If yes, provide the following for each surface impoundment:
Location:
Annual average daily volume discharged to surface impoundment(s) mgd
Is discharge continuous or intermittent?
c. Does the treatment works land-apply treated wastewater? - Yes No
If yes, provide the following for each land application site:
Location:
Number of acres:
Annual average daily volume applied to site: Mgd
Is land application continuous or intermittent?
d. Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works? Yes No
EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 3 of 21

FACILITY NAME AND PERMIT NUMBER: Form Approved 1114199
TOWN OF MANTEO WWTP-NC0079057 OMB Number 2040-0086
If yes,describe the mean(s)by which the wastewater from the treatment works is discharged or transported to the other treatment
works(e.g.,tank truck,pipe).
If transport is by a party other than the applicant,provide:
Transporter name:
Mailing Address:
Contact person:
Title:
Telephone number:
For each treatment works that receives this discharge, provide the following:
Name:
Mailing Address:
Contact person:
Title:
Telephone number:
If known, provide the NPDES permit number of the treatment works that receives this discharge.
Provide the average daily flow rate from the treatment works into the receiving facility. mgd
e. Does the treatment works discharge or dispose of its wastewater in a manner not included in
A.8.a through A.8.d above(e.g., underground percolation,well injection)? Yes No
If yes, provide the following for each disposal method:
Description of method(including location and size of site(s)if applicable):
Annual daily volume disposed of by this method:
Is disposal through this method continuous or intermittent?
EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6 8 7550-22. Page 4 of 21

FACILITY NAME AND PERMIT NUMBER: Form Approved 1/1499
TOWN OF MANTEO WWTP- NC0079057 OMB Number 2040-0086
WASTEWATER DISCHARGES:
If you answered"yes"to question A.8.a,complete questions A.9 through A.12 once for each outfall(including bypass points)through
which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered"no"to question
A.8.a,go to Part B,"Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
a. Outfall number 001
b. Location TOWN OF MANTEO 27954
(City or town,if applicable) (Zip Code)
DARE NC
Countyry) ((State)
3 .54.24 75.39.28
(Latitude) (Longitude)
c. Distance from shore(if applicable) 3,600.00 ft.
J. Depth below surface(if applicable) 11.00 ft.
e. Average daily flow rate 0.30 mgd
f. Does this outfall have either an intermittent or a
periodic discharge?
Yes No (go to A.9.g.)
If yes,provide the following information:
Number of times per year discharge occurs:
Average duration of each discharge:
Average flow per discharge: mgd
Months in which discharge occurs:
g. Is ouffall equipped with a diffuser? Yes No
A.10.Description of Receiving Waters.
a. Name of receiving water SHALLOWBAG BAY
b. Name of watershed(if known)
United States Soil Conservation Service 14-digit watershed code(if known):
c. Name of State Management/River Basin(if known): PASQUOTANK RIVER BASIN
United States Geological Survey 8-digit hydrologic cataloging unit code(if known):
d. Critical low flow of receiving stream(if applicable):
acute cfs chronic cfs
e. Total hardness of receiving stream at critical low flow(if applicable): mg/I of CaCO3
EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 5 of 21

FACILITY NAME AND PERMIT NUMBER: Form Approved 111499
OMB Number 2040-0086
TOWN OF MANTEO WWTP-NCO079057
A.11. Description of Treatment.
a. What levels of treatment are provided?Check all that apply.
Primary Secondary
Advanced Other. Describe:
b. Indicate the following removal rates(as applicable):
Design BOD,removal or Design CBOD5 removal 98.00 %
Design SS removal 85.00 %
Design P removal %
Design N removal 90.00 %
Other %
c. What type of disinfection is used for the effluent from this ouffall?If disinfection varies by season,please describe.
SODIUM HYPOCHLORITE LIQUID DISINFECTION
If disinfection is by chlorination,is dechlorination used for this outfall? Yes No
d. Does the treatment plant have post aeration? Yes No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharged. Do not include information on combined sewer overflows in this section.All information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition,this data must comply with QAIQC requirements
of 40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136.
At a minimum,effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
Outfall number: 001 (FROM 2-1-11 -2-29-12)
PARAMETER MAXIMUM DAILY VALUE AVERAGE DAILY VALUE
Value Units Value Units Number of Samples
H Minimum S.U.
7.00 f,.t" r ~�,�r frs`1':' "'
v o
H Maximum 7.90 s.u. ,`.` $.;`� .,, .� �.a�': �..� ""# � v7 'r
Flow Rate 1.00 MGD 0.29 MGD 393.00
Temperature Winter 19.40 C 15.00 C 106.00
Temperature Summer 33.50 C 26.40 C 185.00
For pH please report a minimum and a maximum daily value
-" IMUMpAILY ANALYTICAL _._MLI MDL-___ -
POLLUTANT _ -- --AVERAGE DAILY-DISCHARGE
---METHOD— —
Conc. Units Conc. Units Number of
Samples
CONVENTIONAL AND NONCONVENTIONAL COMPOUNDS.
BIOCHEMICAL OXYGEN BOD-5 7.00 mg/L 1.10 mg/L 169.00 SM 5210-B 5 mg/L
DEMAND(Report one) CBOD-5
pjpA.. ENTEROCOCCI 27.10 #/100ml 0.50 #/100ml 169.00 EPA 1600 1 colony/100 ml
TOTAL SUSPENDED SOLIDS(TSS) 6.00 mg/L 0.20 mg/L 169.00 SM 2540 D 2.5 mg/L
END OF PART A.
REFER TO THE APPLICATION OVERVIEW TO DETERMINE WHICH OTHER PARTS OF FORM
2A YOU MUST COMPLETE
EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 6 of 21

FACILITY NAME AND PERMIT NUMBER: Form Approved 111499
OMB Number 2040-0086
TOWN OF MANTEO WWTP-NCO079057
BASIC APPLICATION INFORMATION
PART EI. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR
EQUAL TO 0.1 MGD(100,000 gallons per day).
All applicants with a design flow rate>0.1 mgd must answer questions BA through B.6. All others go to Part C(Certification).
B.1. Inflow and Infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration.
5,000.00 gpd
Briefly explain any steps underway or planned to minimize inflow and infiltration.
Smoke testing Rain-stopper inserts in manholes regular cleaning and video inspections of manholes and lines
When problems are found they have been fixed. Close monitoring of SCADA flows at each liftstation for red flags
B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries.
This map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show
the entire area.)
a. The area surrounding the treatment plant,including all unit processes.
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable.
c. Each well where wastewater from the treatment plant is injected underground.
d. Wells, springs,other surface water bodies,and drinking water wells that are: 1)within 114 mile of the property boundaries of the treatment
works,and 2)listed in public record or otherwise known to the applicant.
e. Any areas where the sewage sludge produced by the treatment works is stored,treated,or disposed.
f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act(RCRA)by
truck, rail,or special pipe,show on the map where that hazardous waste enters the treatment works and where it is treated,stored,and/or
disposed.
B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all
backup power sources or redundancy in the system. Also provide a water balance showing all treatment units,including disinfection leg,
chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily
flow rates between treatment units. Include a brief narrative description of the diagram.
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects(related to wastewater treatment and effluent quality)of the treatment works the responsibility of a
contractor? Yes ✓ No
If yes,list the name,address,telephone number,and status of each contractor and describe the contractor's responsibilities(attach additional
pages if necessary).
Name:
Mailing Address:
-- - Telephone Number:
Responsibilities of Contractor:
B.5. Scheduled Improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment,effluent quality,or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements,submit separate responses to question
B.5 for each. (If none,go to question B.6.)
a. List the ouffall number(assigned in question A.9)for each outall that is covered by this implementation schedule.
b. Indicate whether the planned improvements or implementation schedule are required by local,State,or Federal agencies.
Yes No
EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 7 of 21

FACILITY NAME AND PERMIT NUMBER: Form Approved 1114199
TOWN OF MANTEO WWTP- NCO079057 OMB Number 2040-0086
c If the answer to B.5.b is"Yes,"briefly describe, including new maximum daily inflow rate(if applicable).
d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below,as
applicable. For improvements planned independently of local,State,or Federal agencies, indicate planned or actual completion dates,as
applicable. Indicate dates as accurately as possible.
Schedule Actual Completion
Implementation Stage MM/DID/YYYY MM/DO/YYYY
—Begin construction
—End construction
—Begin discharge
—Attain operational level
e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? _Yes No
Describe briefly:
B.6.EFFLUENT TESTING DATA(GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated effluent
testing required by the permitting authority for each outfall through which effluent is discharged. Do not include information on combined sewer
overflows in this section. All information reported must be based on data collected through analysis conducted using 40 CFR Part 136
methods. In addition,this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC requirements for
standard methods for analytes not addressed by 40 CFR Part 136. At a minimum,effluent testing data must be based on at least three
pollutant scans and must be no more than four and one-half years old.
Outfall Number:001
POLLUTANT MAXIMUM DAILY AVERAGE DAILY DISCHARGE
DISCHARGE
Conc. Units Conc. Units Number of ANALYTICAL ML/MDL
Samples METHOD
CONVENTIONAL AND NONCONVENTIONAL COMPOUNDS.
AMMONIA(as N) 7.10 mg/L 0.20 mg/L 169.00 SM 4500 NH3 D 0.2 mg/L
CHLORINE(TOTAL
RESIDUAL,TRC) <10 ug/L <10 ug/L 169.00 HACH10014ULM 1 mg/L
DISSOLVED OXYGEN 10.80 mg/L 8.30 mg/L 169.00 SM 4500 O G 0.10 mg/L
TOTAL KJELDAHL ^,.
NITROGEN TKN I0•90 mg/L 0.90 mg/L 59.uu EPA 351.2 0.5 mg/L
NITRATE PLUS NITRITE
NITROGEN 926.00 mg/L 5.70 mg/L 6.00 EPA 353.2 0.02 mg/L
T-.OIL-.and.GREASE - - -- ---
—- -- -- _:.- <5=__ mg/L <5 — mg/L --= 6.00=-.- EPA-1664 -- 5 rng/L -- —- --
__ _ P-HOSP-HORUS.(Total) _. 4.50- mg/L 2.10 mg/L 6:00- - SM 4500 PT - 0:04-mg/L
TOTAL
SOLIDS(TD DISSOLVED)
926.00 mg/L 700.00 mg/L 6.00 SM 2540 C 2.5 mg/L
OTHER
---- END OF-PART B.
REFER:TO THE APPLICATION OVERVIEW TO DETERMINE WHICH OTHER PARTS OF FORM
2A YOU MUST COMPLETE
EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 8 of 21

FACILITY NAME AND PERMIT NUMBER: Form Approved 1114199
TOWN OF MANTEO WWTP-NCO079057 OMB Number 2040-0086
BASIC APPLICATION INFORMATION
PART C. CERTIFICATION
All applicants must complete the Certification Section. Refer to instructions to determine who is an officer for the purposes of this certification. All
applicants must complete all applicable sections of Form 2A,as explained in the Application Overview. Indicate below which parts of Form 2A you
have completed and are submitting. By signing this certification statement,applicants confirm that they have reviewed Form 2A and have completed
all sections that apply to the facility for which this application is submitted.
Indicate which parts of Form 2A you have completed and are submitting:
Basic Application Information packet Supplemental Application Information packet:
Part D(Expanded Effluent Testing Data)
Part E(Toxicity Testing: Biomonitoring Data)
Part F(Industrial User Discharges and RCRAICERCLA Wastes)
Part G(Combined Sewer Systems)
ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION.
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 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 fine
and imprisonment for knowing violations.
Name and official title NATHAN PHARR, UTILITIES SU INTENDENT, MANTEO WWTP ORC
Signature
Telephone number (252)473-351%3
Date signed 5-1Z`I/ 17-
Upon request of the permitting authority,you must submit any other information necessary to assess wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
EPA Form 3510-2A(Rev. 1-99). Replaces EPA forms 7550-6&7550-22. Page 9 of 21

i .
THE TOWN
j \`� C [MpliwnCN(sWiUM MIM•auTElOF
\
CGG CfGN1( �
O/R CRAW RETl41 /
GS CRCYALG55 KirynlfD %lCf!
fD6F f4Vt1]nLIP1 DnSN &IAVIIY GLIIN
� EGfY PFLLIHL 54I12 WK •Y
f' bAlEiai f1LSAK DnSW �lN.
PRESERVE
I vlr c61"V v"
wo. laraw.oi[EIEovCc PROSPER
5LL'D6E ICIDIIXs LnGOCN ISY' ffIIAHI INItL Wro
O LIWIO O wn 11 TIT
0
h nY fiATIM Q
f4DK Q
e[iWi %ttt[ Iw.k n �
yliaff InDeG D M i/TLt
[%E�NfulnvµlLf IwL1Z 1
i.YEEi PEFO Sm IDUiu•uau•LFI Z
Y YW LYE
`_.—_ P WAIR EC1FI O
t oz
ti DK<MW RNOiI�t oz
° 'i fp�cl Ai I[ai 14w5f Sa W
w
AEROBIC
DIGE>TE -
rn • I �•
1 i \
--_ —.--
OIERATION6 — ——"----—
WINTEN E ` BUILDING Iw.- 1• ONRiai[2 IMIK i C w
m SL I w I. � I WORKS NEAO
TOWN OF MANTEO WWTP
"` " ______ NC0079057
S I l__iYria' \ P
PROCESS FLOW DIAGRAM
Si CLARIFIER CLARIFIER !
f, fl This diagram shows an overview of the Town's
fILTER 1 fl AERATION CIPNtl.S ;�i wastewater treatment plant including all valves,
lines and bypass piping. Flow patterns are illustrated
y
with arrows on the appropriate lines. Emergency standby
power is located next to the operations building with an
Annual Average Daily V�645 IIDI>TRIB ION ° automatic transfer switch located in the electrical control
Flow Rate (effluent): RETIRN B°" room that powers essential process units during a power
.295 mgd I outage. The WWTP is monitored with a SCADA system
that monitors 24 hours a day all units as well as
operational control for several plant processes.
***AnnuallAverage Daily "*`NOTE: The only flow meters installed
Flow Rate (RAS): at the WWTP between process
.315 mgd units or outfalls are the RAS flow
meter and the effluent flow meter
which are shown on this profile.
(Flows provided on this diagram represent a running year average
from March 1st 2011 - February 28th 2012)