NC0031828_Renewal (Application)_20221031

• d YSrAor,q 1'1
ti i
ROY COOPER
Governor
ELIZABETH S.BISER •� ° ,•._'
Secretory -
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
November 01, 2022
Town of Vanceboro
Attn: Chad Braxton, Mayor
PO Box 306
Vanceboro, NC 28586-0306
Subject: Permit Renewal
Application No. NC0031828
Vanceboro WWTP
Craven County
Dear Applicant:
The Water Quality Permitting Section acknowledges the October 31, 2022, receipt of your permit renewal application and
supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW permitting
branch. Per G.S. 150E-3 your current permit does not expire until permit decision on the application is made.
Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit.The
permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a
timely manner to requests for additional information necessary to allow a complete review of the application and renewal
of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
Sincere)a
ele ,,�t!
�Iw ,
Wren Th- 'ford
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application
D_E Q,�- North Carolina Department of Environmental Quality I Division of Water Resources
'�/}� Washington Regional Office 1943 Washington Square Mall I Washington North Carolina 27889
='.:.:1 2 .4.a.rv� 252946.6481

0r'�•Nc. , Alderman Stephen Beirose
Mayor Chad Braxton v w ,fin ,., Cannon
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`-144401{j1pi jlriiG Alderman Keith Russell Ipock
4,1 �,, il, h AldermanAlderman Thad Jones
Town Clerk Beverly Drake `°�'L !!.eY,l !' Alderman Todd McMillen
4„Sr t`��if`
October 26,2022 CEtVED
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NCDEQ/DWR
Attn; NPDES Unit �){�T2�22
1617 Mail Service Center ��NpDES
Raleigh,NC 27699-1617 MC�EQID
Subject: Request for NPDES Renewal
NPDES Permit#NC0031828
Town of Vanceboro 1
Vanceboro WWTP
Craven County
Dear NPDES Unit:
The Town of Vanceboro is submitting the renewal application package for NPDES #NC0031828. The
permit expiration date is April 30,2023. The renewal application package consists of:
• Cover letter
• Renewal application Form—EPA Form 3510-2A(Revised 3-19)with tables A, B,and D
• Topographic map
• Schematic of WWTP with water balance
• Plant Narrative
The town request to continue reduced monitoring as weekly for pH, dissolved oxygen, BOD, total
suspended solids NH3 as N, fecal coliform, and upstream and downstream temperature. Monitoring
2/week for TRC as this is our current monitoring requirements.
Sincerely,
NA&
Chad Braxton; ayor
Town of Vanceboro

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
W
Form U.S.Environmental Protection Agency
2A : EPA Application for NPDES Permit to Discharge Wastewater
NPDES NEW AND EXISTING PUBLICLY OWNED TREATMENT WORKS
SECTION 1.BASIC APPLICATION INFORMATION FOR ALL APPLICANTS(40 CFR 122.21(j)(1)and(9))
1.1 Facility name
Vanceboro WWTP
Mailing address(street or P.O.box)
P.O.Box 306
City or town State ZIP code
o Vanceboro NC 28586
Contact name(first and last) Title Phone number Email address
Chad Braxton Mayor [phone] [e-mail]
' Location address(street,route number,or other specific identifier) 0 Same as mailing address
City or town State ZIP code
1.2 Is this application for a facility that has yet to commence discharge?
❑ Yes 4 See instructions on data submission 0 No
requirements for new dischargers.
1.3 Is applicant different from entity listed under Item 1.1 above?
❑ Yes ❑ No 4 SKIP to Item 1.4.
Applicant name
Applicant address(street or P.O.box)
0
City or town State ZIP code
cv
Contact name(first and last) Title Phone number Email address
a
1.
4 Is the applicant the facility's owner,operator,or both?(Check only one response.)
❑ Owner ❑ Operator I Both
1.5 To which entity should the NPDES permitting authority send correspondence?(Check only one response.)
El Facility El Applicant 0 Facility and applicant
(they are one and the same)
1.6 Indicate below any existing environmental permits.(Check all that apply and print or type the corresponding permit
number for each.)
Existing Environmental Permits
a_ ❑ NPDES(discharges to surface ❑ RCRA(hazardous waste) ❑ UIC(underground injection
water) control)
c NC0031828,NC0080071
? ❑ PSD(air emissions) ❑ Nonattainment program(CM) ❑ NESHAPs(CM)
w
rn
❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section ❑✓ Other(specify)
404)
EPA Form 3510-2A(Revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
1.7 Provide the collection system information requested below for the treatment works.
Municipality Population Collection System Type
Served Served (indicate percentage) Ownership Status
100 %separate sanitary sewer 0 Own ❑ Maintain
'n Vanceboro 1005 /o 0
w combined storm and sanitary sewer 0 Own 0 Maintain
❑ Unknown 0 Own 0 Maintain
co
cc %separate sanitary sewer 0 Own ❑ Maintain
'2 %combined storm and sanitary sewer ❑ Own 0 Maintain
= 0 Unknown ❑ Own 0 Maintain
0.
a.
o 0 separate sanitary sewer ❑ Own ❑ Maintain
c %combined storm and sanitary sewer ❑ Own 0 Maintain
Eg ❑ Unknown 0 Own 0 Maintain
%separate sanitary sewer 0 Own 0 Maintain
>, %combined storm and sanitary sewer ❑ Own ❑ Maintain
co
o ❑ Unknown 0 Own ❑ Maintain
Total
d Population 1005
Served
Separate Sanitary Sewer System Combined Storm and
Sanitary Sewer
Total percentage of each type of
sewer line(in miles) 1o0
?' 1.8 Is the treatment works located in Indian Country?
o ❑ Yes El No
0
U
c 1.9 Does the facility discharge to a receiving water that flows through Indian Country?
co
_ ❑ Yes 0 No
1.10 Provide design and actual flow rates in the designated spaces. Design Flow Rate
0.3 mgd
To
y Annual Average Flow Rates(Actual)
cz
Two Years Ago Last Year This Year
c
COiv
0.17 mgd 0.192 mgd 0.132 mgd
rnLL
oMaximum Daily Flow Rates(Actual)
Two Years Ago Last Year This Year
0.653 mgd 0.416 mgd 0.89 mgd
y 1.11 Provide the total number of effluent discharge points to waters of the United States by type.
..
p Total Number of Effluent Discharge Points by Type
°' o Constructed
Q' Treated Effluent Untreated Effluent Combined Sewer Bypasses Emergency
.a Overflows yp Overflows
U
N
G 1
EPA Form 3510-2A(Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
Outfalls Other Than to Waters of the United States
1.12 Does the POTW discharge wastewater to basins, ponds,or other surface impoundments that do not have outlets for
discharge to waters of the United States?
E Yes 0 No 4 SKIP to Item 1.14.
1.13 Provide the location of each surface impoundment and associated discharge information in the table below.
Surface Impoundment Location and Discharge Data
Average Daily Volume
Location Discharged to Surface Continuous or Intermittent
Impoundment (check one)
❑ Continuous
gpd ❑ Intermittent
0 Continuous
gpd ❑ Intermittent
0 Continuous
gpd ❑ Intermittent
-a
2 1.14 Is wastewater applied to land?
❑ Yes ❑ No 4 SKIP to Item 1.16.
0 1.15 I Provide the land application site and discharge data requested below.
eL
Land Application Site and Discharge Data
o Average Daily Volume Continuous or
Location Size Applied Intermittent
Eir? (check one)
acres gpd El Continuous
o ❑ Intermittent
acres d 0 Continuous
o gp ❑ Intermittent
acres d ❑ Continuous
A gp ❑ Intermittent
to
3 1.16 Is effluent transported to another facility for treatment prior to discharge?
o ❑ Yes ❑✓ No 4 SKIP to Item 1.21.
1.17 Describe the means by which the effluent is transported(e.g.,tank truck, pipe).
1.18 Is the effluent transported by a party other than the applicant?
❑ Yes E No 4 SKIP to Item 1.20.
1.19 Provide information on the transporter below.
Transporter Data
Entity name Mailing address(street or P.O.box)
City or town State ZIP code
Contact name(first and last) Title
Phone number Email address
EPA Form 3510-2A(Revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
1.20 In the table below, indicate the name,address,contact information, NPDES number, and average daily flow rate of the
receiving facility.
Receiving Facility Data
Facility name Mailing address(street or P.O.box)
0
City or town State ZIP code
Contact name(first and last) Title
Phone number Email address
o NPDES number of receiving facility(if any) ❑ None
a Average daily flow rate mgd
ct
0 1.21 Is the wastewater disposed of in a manner other than those already mentioned in Items 1.14 through 1.21 that do not
have outlets to waters of the United States(e.g., underground percolation,underground injection)?
c ❑ Yes ❑ No 4 SKIP to Item 1.23.
1.22 Provide information in the table below on these other disposal methods.
Information on Other Disposal Methods
o Disposal Location of Size of Annual Average Continuous or Intermittent
Method Disposal Site Disposal Site Daily Discharge (check one)
ro Description Volume
❑ Continuous
acres gpd ❑ Intermittent
❑ Continuous
acres gpd 0 Intermittent
0 Continuous
acres gpd 0 Intermittent
1.23 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(n)?(Check all that apply.
d w Consult with your NPDES permitting authority to determine what information needs to be submitted and when.)
C ElDischarges into marine waters(CWA ❑ Water quality related effluent limitation(CWA Section
Section 301(h)) 302(b)(2))
✓❑ Not applicable
1.24 Are any operational or maintenance aspects(related to wastewater treatment and effluent quality)of the treatment works
the responsibility of a contractor?
❑ Yes E No-*SKIP to Section 2.
1.25 , Provide location and contact information for each contractor in addition to a description of the contractor's operational
and maintenance responsibilities.
Contractor Information
Contractor 1 Contractor 2 Contractor 3
o Contractor name
(company name)
Mailing address
(street or P.O.box)
City,state,and ZIP
15
code
0 Contact name(first and
c last)
Phone number
Email address
Operational and
maintenance
responsibilities of
contractor
EPA Form 3510-2A(Revised 3-19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
SECTION 2.ADDITIONAL INFORMATION(40 CFR 122.21(j)(1)and(2))
c Outfalls to Waters of the United States
c 2.1 Does the treatment works have a design flow greater than or equal to 0.1 mgd?
rn
o ❑ Yes ❑ No -) SKIP to Section 3.
2.2 Provide the treatment works'current average daily volume of inflow Average Daily Volume of Inflow and Infiltration
and infiltration.
3500 gpd
Indicate the steps the facilityis takingto minimize inflow and infiltration.
p
Vanceboro monitors flow during rain events and continues to smoke test the system annually.
0
0 2.3 Have you attached a topographic map to this application that contains all the required information?(See instructions for
• a specific requirements.)
o
O ❑r Yes El No
E 2.4 Have you attached a process flow diagram or schematic to this application that contains all the required information?
3 ni
O (See instructions for specific requirements.)
u
E Yes ❑ No
2.5 Are improvements to the facility scheduled?
❑ Yes E No 4 SKIP to Section 3.
Briefly list and describe the scheduled improvements.
0
1.
c
E
Q 2.
E
0 0
3.
w
4)
d
n 4.
• 2.6 Provide scheduled or actual dates of completion for improvements.
Scheduled or Actual Dates of Completion for Improvements
Affected Attainment of
Scheduled Begin End Begin
Outfalls Operational
2 Improvement Construction Construction Discharge p
Level
(from above) (list outfall (MM/DD/YYYY) (MM/DD/YYYY) (MM/DD/YYYY) (MM/DD/YYYY)
)
1.
2.
3.
4.
2.7 Have appropriate permits/clearances concerning other federal/state requirements been obtained?Briefly explain your
response.
0 Yes 0 No 0 None required or applicable
Explanation:
EPA Form 3510-2A(Revised 3-19) Page 5

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
SECTION 3.INFORMATION ON EFFLUENT DISCHARGES(40 CFR 122.21(j)(3)to(5))
3,1 Provide the following information for each outfall.(Attach additional sheets if you have more than three outfalls.)
Outfall Number 001 Outfall Number Outfall Number
State North Carolina
County Craven
O City or town Vanceboro
0
Distance from shore N/A ft. ft. ft.
Depth below surface N/A ft. ft. ft.
43
Average daily flow rate 0.132 mgd mgd mgd
Latitude 35° 17' 42" N
Longitude 77° 09' 00" w "
3.2 Do any of the outfalls described under Item 3.1 have seasonal or periodic discharges?
o ❑ Yes 0 No 4 SKIP to Item 3.4,
a+
3.3 If so,provide the following information for each applicable outfall.
s
Outfall Number Outfall Number Outfall Number
o Number of times per year
0 discharge occurs
n Average duration of each
discharge(specify units)
Tri
Average flow of each
discharge mgd mgd mgd
co
Months in which discharge
occurs
3.4 Are any of the outfalls listed under Item 3.1 equipped with a diffuser?
❑ Yes 0 No+ SKIP to Item 3.6.
3.5 Briefly describe the diffuser t pe at each applicable outfall.
Q.
Outfall Number Outfall Number Outfall Number
U,
_ o
vi 3.6 Does the treatment works discharge or plan to discharge wastewater to waters of the United States from one or more
discharge points?
w ❑ Yes ❑ No+SKIP to Section 6.
EPA Form 3510-2A(Revised 3-19) Page 6

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
3.7 Provide the receiving water and related information (if known)for each outfall.
Outfall Number Outfall Number Outfall Number
Receiving water name Swift Creek
Name of watershed,river,
or stream system Neuse
U.S.Soil Conservation
tn Service 14-digit watershed
o code
Name of state Middle Neuse
management/river basin
rn
U.S. Geological Survey
8-digit hydrologic 03020202
re cataloging unit code
Critical low flow(acute) cfs cfs cfs
Critical low flow(chronic) cfs cfs cfs
Total hardness at critical mg/L of mg/L of mg/L of
low flow CaCO3 CaCO3 CaCO3
3.8 Provide the following information describing the treatment provided for discharges from each outfall.
Outfall Number °°1 Outfall Number Outfall Number
Highest Level of 0 Primary ❑ Primary E Primary
Treatment(check all that ❑ Equivalent to E Equivalent to ❑ Equivalent to
apply per outfall) secondary secondary secondary
O Secondary 0 Secondary 0 Secondary
O Advanced 0 Advanced 0 Advanced
0 Other(specify) 0 Other(specify) 0 Other(specify)
o Tertiary
a Design Removal Rates by
Outfall
d
BOD5 or CBOD5 90
TSS 90 %
0 Not applicable 0 Not applicable 0 Not applicable
Phosphorus
0/0
0 Not applicable 0 Not applicable 0 Not applicable
Nitrogen
Other(specify) 0 Not applicable 0 Not applicable 0 Not applicable
0/0
EPA Form 3510-2A(Revised 3-19) Page 7

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004 1
3.9 Describe the type of disinfection used for the effluent from each outfall in the table below. If disinfection varies by
season,describe below.
CD Vanceboro uses gas chlorination followed by a contact chamber and dechlorination.
0
c.)
a Outfall Number 001 Outfall Number Outfall Number
Disinfection type
Chlorine
tff
61
Seasons used
Dechlorination used? ❑ Not applicable ❑ Not applicable D Not applicable
El Yes ❑ Yes ❑ Yes
❑ No ❑ No ❑ No
3.10 Have you completed monitoring for all Table A parameters and attached the results to the application package?
El Yes El No
3.11 Have you conducted any WET tests during the 4.5 years prior to the date of the application on any of the facility's
discharges or on any receiving water near the discharge points?
❑ Yes ElNo 4 SKIP to Item 3.13.
3.12 Indicate the number of acute and chronic WET tests conducted since the last permit reissuance of the facility's
discharges by outfall number or of the receiving water near the discharge points.
Outfall Number Outfall Number Outfall Number
Acute Chronic Acute Chronic Acute Chronic
Number of tests of discharge
water
Number of tests of receiving
water
3.13 Does the treatment works have a design flow greater than or equal to 0.1 mgd?
co ❑✓ Yes ❑ No 4 SKIP to Item 3.16.
0 3,14 Does the POTW use chlorine for disinfection,use chlorine elsewhere in the treatment process,or otherwise have
07 reasonable potential to discharge chlorine in its effluent?
El Yes 4 Complete Table B,including chlorine. ❑ No 4 Complete Table B,omitting chlorine.
-5 3.15 Have you completed monitoring for all applicable Table B pollutants and attached the results to this application
package?
❑✓ Yes ❑ No
3.16 Does one or more of the following conditions apply?
• The facility has a design flow greater than or equal to 1 mgd.
• The POTW has an approved pretreatment program or is required to develop such a program.
• The NPDES permitting authority has informed the POTW that it must sample for the parameters in Table C, must
sample other additional parameters(Table D),or submit the results of WET tests for acute or chronic toxicity for
each of its discharge outfalls(Table E).
Yes .4 Complete Tables C, D,and E as
❑ applicable. ❑ No 4 SKIP to Section 4.
3.17 Have you completed monitoring for all applicable Table C pollutants and attached the results to this application
package?
❑ Yes ❑ No
3.18 Have you completed monitoring for all applicable Table D pollutants required by your NPDES permitting authority and
attached the results to this application package?
❑ Yes ❑ No additional sampling required by NPDES
permitting authority.
EPA Form 3510-2A(Revised 3-19) Page 8

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
3.19 Has the POTW conducted either(1)minimum of four quarterly WET tests for one year preceding this permit application
or(2)at least four annual WET tests in the past 4.5 years?
❑ Yes ❑ No 4 Complete tests and Table E and SKIP to
Item 3.26.
3.20 Have you previously submitted the results of the above tests to your NPDES permitting authority?
❑ Yes ❑ No+Provide results in Table E and SKIP to
Item 3.26.
3.21 Indicate the dates the data were submitted to your NPDES permitting authority and provide a summary of the results.
Date(s)Submitted Summary of Results
(MM/DD/YYYY)
C,
m
c
ra 3.22 Regardless of how you provided your WET testing data to the NPDES permitting authority,did any of the tests result in
toxicity?
�' ❑ Yes ❑ No 4 SKIP to Item 3.26.
3.23 Describe the cause(s)of the toxicity:
c
a)
w
3.24 Has the treatment works conducted a toxicity reduction evaluation?
❑ Yes ❑ No 4 SKIP to Item 3.26.
3.25 Provide details of any toxicity reduction evaluations conducted.
3.26 Have you completed Table E for all applicable outfalls and attached the results to the application package?
❑ Yes ❑ Not applicable because previously submitted
information to the NPDES .ermittin. authorit .
SECTION 4.INDUSTRIAL DISCHARGES AND HAZARDOUS WASTES(40 CFR 122.21(j)(6)and(7))
4.1 Does the POTW receive discharges from SIUs or NSCIUs?
❑ Yes ❑✓ No 4 SKIP to Item 4.7.
w 4.2 Indicate the number of SIUs and NSCIUs that discharge to the POTW.
Number of SIUs Number of NSCIUs
N
O
2 4.3 Does the POTW have an approved pretreatment program?
_ ❑ Yes ❑ No
F, 4.4 Have you submitted either of the following to the NPDES permitting authority that contains information substantially
identical to that required in Table F:(1)a pretreatment program annual report submitted within one year of the
application or(2)a pretreatment program?
❑ Yes ❑ No 4 SKIP to Item 4.6.
0
o 4.5 Identify the title and date of the annual report or pretreatment program referenced in Item 4.4.SKIP to Item 4.7.
U)
c
4.6 Have you completed and attached Table F to this application package?
❑ Yes ❑ No
EPA Form 3510-2A(Revised 3-19) Page 9

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
4.7 Does the POTW receive,or has it been notified that it will receive, by truck,rail,or dedicated pipe,any wastes that are
regulated as RCRA hazardous wastes pursuant to 40 CFR 261?
❑ Yes ❑ No + SKIP to Item 4.9.
4.8 If yes, provide the following information:
Annual
Hazardous Waste Waste Transport Method Amount of Units
Number (check all that apply) Waste
Received
❑ Truck ❑ Rail
3 ❑ Dedicated pipe ❑ Other(specify)
0
0
d ❑ Truck ❑ Rail
❑ Dedicated pipe ❑ Other(specify)
0
El Truck ❑ Rail
co
❑ Dedicated pipe ❑ Other(specify)
cv
Cf
s4.9 Does the POTW receive,or has it been notified that it will receive,wastewaters that originate from remedial activities,
including those undertaken pursuant to CERCLA and Sections 3004(7)or 3008(h)of RCRA?
❑ Yes 0 No 4 SKIP to Section 5.
TA 4.10 Does the POTW receive(or expect to receive)less than 15 kilograms per month of non-acute hazardous wastes as
c specified in 40 CFR 261.30(d)and 261.33(e)?
❑ Yes 4 SKIP to Section 5. ❑ No
4.11 Have you reported the following information in an attachment to this application:identification and description of the
site(s)or facility(ies)at which the wastewater originates;the identities of the wastewater's hazardous constituents;and
the extent of treatment,if any,the wastewater receives or will receive before entering the POTW?
❑ Yes ❑ No
SECTION 5.COMBINED SEWER OVERFLOWS(40 CFR 122.21(j)(8))
5.1 Does the treatment works have a combined sewer system?
❑ Yes 0 No 4SKIP to Section 6.
5.2 Have you attached a CSO system map to this application?(See instructions for map requirements.)
❑ Yes
❑ No
0
5.3 Have you attached a CSO system diagram to this application?(See instructions for diagram requirements.)
cn
c� ❑ Yes El No
EPA Form 3510-2A(Revised 3-19) Page 10

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
5.4 For each CSO outfall,provide the following information. (Attach additional sheets as necessary.)
CSO Outfall Number CSO Outfall Number CSO Outfall Number
City or town
0
•9- State and ZIP code
c.a
N
o County
o Latitude "
0
U
Longitude " "
Distance from shore ft. ft. ft.
Depth below surface ft. ft. ft.
5.5 Did the POTW monitor any of the following items in the past year for its CSO outfalls?
CSO Outfall Number CSO Outfall Number CSO Outfall Number
Rainfall 0 Yes ❑ No ❑ Yes 0 No 0 Yes ❑ No
a)
a
O CSO flow volume ❑ Yes 0 No ❑ Yes ❑ No ❑ Yes ❑ No
c
O CSO pollutant
m ❑ Yes 0 No 0 Yes 0 No ❑ Yes ❑ No
o concentrations
cn
0 Receiving water quality ❑ Yes 0 No 0 Yes ❑ No ❑ Yes ❑ No
CSO frequency 0 Yes ❑ No ❑ Yes ❑ No ❑ Yes El No
Number of storm events ❑ Yes ❑ No 0 Yes ❑ No ❑ Yes ❑ No
5.6 Provide the following information for each of your CSO outfalls.
CSO Outfall Number CSO Outfall Number CSO Outfall Number
Number of CSO events in events events events
-. the past year
ca
a
.= Average duration per hours hours hours
d event CI or CIEstimated CIActual or❑ Estimated ❑Actual or❑ Estimated
`u million gallons million gallons million gallons
o Average volume per event
en
El Actual or❑ Estimated ❑Actual or 0 Estimated ❑Actual or❑ Estimated
Minimum rainfall causing inches of rainfall inches of rainfall inches of rainfall
a CSO event in last year El Actual or❑ Estimated El Actual or 0 Estimated 0 Actual or 0 Estimated
EPA Form 3510-2A(Revised 3-19) Page 11

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP OMB No.2040-0004
5.7 Provide the information in the table below for each of your CSO outfalls.
CSO Outfall Number CSO Outfall Number CSO Outfall Number
Receiving water name
i Name of watershed/
H stream system
d U.S.Soil Conservation 0 Unknown 0 Unknown 0 Unknown
Service 14-digit
watershed code
'> (if known)
0 Name of state
d
ye management/river basin
cnU.S. Geological Survey 0 Unknown 0 Unknown 0 Unknown
8-Digit Hydrologic Unit
Code(if known)
Description of known
water quality impacts on
receiving stream by CSO
(see instructions for
exam.les
SECTION 6.CHECKLIST AND CERTIFICATION STATEMENT(40 CFR 122.22(a)and(d))
6.1 In Column 1 below,mark the sections of Form 2A that you have completed and are submitting with your application.For
each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note that not
all applicants are required to provide attachments.
Column 1 Column 2
Section 1: Basic Application
Information for All Applicants ❑ w/variance request(s) 0 w/additional attachments
❑ Section 2:Additional 0 w/topographic map ❑✓ w/process flow diagram
Information 0 w/additional attachments
0 w/Table A ❑r w/Table D
❑ Section 3: Information on 0 w/Table B ❑ wl Table E
c Effluent Discharges
E 0 w/Table C 0 wl additional attachments
co Section 4: Industrial 0 w/SIU and NSCIU attachments 0 w/Table F
et") ❑ Discharges and Hazardous
Wastes
:r.
❑ w/additional attachments
F. ❑ Section 5:Combined Sewer ❑ w/CSO map ❑ w/additional attachments
-c Overflows
c Elw/CSO system diagram
0 Section 6:Checklist and 0 w/attachments
co Certification Statement
U)
Y 6.2 Certification Statement
U
C)
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 fine
and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Chat( 'gfC64 u0 K/10 c�\l
Si nature
ADate signed
Via 16(1.* I
EPA Form 3510-2A(Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP 001 0MB No.2040-0004
TABLE A.EFFLUENT PARAMETERS FOR ALL POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant
Value Units Value Units NSamplesf Method1 (include units)
Biochemical oxygen demand
o ML
ID BODE or❑CBOD5 7.5 mg/L 0.70 mg/L 52 5210B-16 2 mg/L 0 MDL
(report one)
ML
Fecal coliform 691 cfu/100 ml 7.78 cfu/100 ml 52 IDEXX 1 cfu/too El MDL
Design flow rate 0.30 MGD 0.132 MGD Continuous
pH(minimum) 6.81 su
pH(maximum) 7.98 su
Temperature(winter) 10.1 deg c 18.6 deg c 250
Temperature(summer) 28.3 deg c 27.7 deg c 250
0 ML
Total suspended solids(TSS) 26.0 mg/L 5.93 mg/L 52 SM 2540 D-2015 2.5 mg/L ❑MDL
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or O.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2A(Revised 3-19) Page 13

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP 001 OMB No.2040-0004
TABLE B.EFFLUENT PARAMETERS FOR ALL POTWS WITH A FLOW EQUAL TO OR GREATER THAN 0.1 MGD
Maximum Daily Discharge Average Daily Discharge
Pollutant Analytical ML or MDL
Value Units Value Units Number of Methods (include units)
Samples
0 ML
Ammonia(as N) 8.62 mg/L 1.24 mg/L 52 350.1 R2-93 0.1 mg/L 0 MDL
Chlorine 0.0 u /L 0.0 u /L 104 4500-CI F-2011 20 u /L �ML
(total residual,TRC)2 g g g O MDL
0 ML
Dissolved oxygen 10.5 mg/L 8.47 mg/L 52 4500-0 G-2016 0.1 mg/L O MDL
LI ML
Nitrate/nitrite 17.28 mg/L 13.99 mg/L 24 300.1 R1-97 0.1 mg/L O MDL
ML
Kjeldahl nitrogen 3.32 mg/L 2.28 mg/L 24 350.1 R2-93 0.1 mg/L 0 MDL
0 ML
Oil and grease N/A N/A N/A N/A N/A N/A N/A MDL
Phosphorus 0.72 mg/L 0.44 mg/L 12 365.4-74 0.3 mg/L ❑MDL
0 ML
Total dissolved solids N/A N/A N/A N/A N/A N/A N/A ❑MDL
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
2 Facilities that do not use chlorine for disinfection,do not use chlorine elsewhere in the treatment process,and have no reasonable potential to discharge chlorine in their effluent are not
required to report data for chlorine.
EPA Form 3510-2A(Revised 3-19) Page 15

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009719689 NC0031828 Vanceboro WWTP 001 OMB No.2040-0004
TABLE D.ADDITIONAL POLLUTANTS AS REQUIRED BY NPDES PERMITTING AUTHORITY
Maximum Daily Discharge Average Daily Dischar e
Pollutant Analytical ML or MDL
(list) Value Units Value Units Number of Methods (include units)
Samples
❑ No additional sampling is required by NPDES permitting authority.
❑ML
Total Nitrogen 19.55 mg/L 16.27 mg/L 24 Calculated N/A ❑MDL
ML
Mercury 1.7 ng/L 1.7 ng/L 1 EPA1631E 0.5 ng/L p MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
O MDL
❑ML
❑MDL
❑ML
❑MDL
0 ML
❑MDL
0 ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
0 MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
s Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or required
under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2A(Revised 3-19) Page 23

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Town of Vanceboro N ----. - _ _
Vanceboro WWTP
NPDES Permit NC0031828
Facility Location -
Receiving Stream:Swift Creek Stream Class:C;Sw, NSW scale not shown
Stream Segment: 27-97-(0.5) Sub-Basin#:03-04-09
River Basin: Neuse HUC:0302020205 SCALE USGS Quad:Vanceboro
County:Craven 1:24,000 35.29500°,-77.15000°

ALUM /POLYMER 1
BUILDING nSLUDGE
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0.136 MGD
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0.068 MGD BUILDING
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SECONDARY
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Vanceboro WWTP 0 & M Manual 12/94
Design Influent Characteristics
BOD5 240 mg/I Min. Temperature = 10°C
TSS 240 mg/I Max. Temperature = 28°C
NH3 as N 25 mg/1
TKN 40 mg/1
Phosphorus 8 mg/1
Design Effluent Characteristics
Winter Summer
BOD5 10.0 mg/1 5.0 mg/1
TSR 30.0 mg/I 30.0 mg/I
DO 6.0 mg/1 minimum 6.0 mg/1 minimum
NH3 as N 3.6 mg/1 2.0 mg/1
Phosphorus 2.0 mg/1 2.0 mg/1
Fecal Coliform 200.0/100 ml 200.0/100 ml
1.5 BRIEF DESCRIPTION OF UNIT OPERATIONS
An overall plan of the plant layout and yard piping is shown in Figures 1.5-1 and 1.5-2.
1.5.1 Preliminary Treatment This structure includes two manual bar screens, and two grit
removal chambers. The primary purpose of the bar screen is to remove rags, sticks and large
solids. The primary purpose of the grit removal chamber is to remove grit and sand. This
lessens the wear on the sludge collecting and pumping equipment that follows. The influent ,
wastewater flow is monitored at the end of the preliminary treatment as it prepares to enter the
stilling well and influent sampler.
1.5.2 Influent Monitoring Measurement of the plant influent occurs just prior to the
proportional weir at preliminary treatment. A flow sensor transmits signals to the influent
sampler located near the preliminary treatment stilling well. Flow sensing activates the influent
composite sampler. The sampler, which includes a self- contained refrigerator, also may be
controlled by an integral time clock.
1.5.3 Influent Flow Splitter Box This structure receives the flow from the preliminary treatment
unit and divides the flow into two separate "trains" through the WWTP. Oxidation Ditch No.
2 and Clarifiers No. 2 and No. 3, of the original treatment train, will be utilized to handle 2/5
1101 1.0 - 4

Vanceboro WWTP 0 & M Manual 12/94
of the plant flow. The two weirs which split the flows are sized to handle the entire plant peak
flow. Therefor
e, either weir can be closed (or valve 4 or 5), allowing all flow through the
opposite side.
1.5.4 Oxidation Ditches The dual oxidation ditches are the work horses of the treatment
process. Here, a culture of microorganisms utilize the organic material (mostly soluble)'as a
food source. The bacteria convert organics into water, carbon dioxide, and biomass (sludge).
Oxidation Ditch No. 2, of the original treatment train, also contains Aerobic Digestor No. 2.
1.5.5 Alum Feed System The alum feed system is used to remove phosphorus from the plant
effluent. Alum is fed prior to the clarifiers to react with phosphorus and cause it to settle out
of the wastewater stream.
1.5.6 Clarifiers In the clarifiers, the biomass is separated from the water by quiescent settling.
After settling, the biomass or sludge is then returned to the oxidation ditch or wasted to the
aerobic digestor. Returned sludge is necessary to maintain a high population of microorganisms
in the oxidation ditches.
1.5.7 Tertiary Filters The tertiary filters are packaged treatment units designed to further treat
0.25 mgd of secondary treated wastewater. The clarifier supernatant is filtered at these units.
1.5.8 Chlorination System The clarified water from the clarifiers is chlorinated after the
tertiary filter. The removal (killing) of fecal coliform by post chlorination is directly
proportional to the concentration of chlorine and the time of contact. A chlorine solution from
the Chlorination Building is injected directly into the treated wastewater. Contact time is
accomplished within the Chlorine Contact Chamber. The contact time provides the time
necessary for the chlorine to be effectively used prior to entering the receiving stream.
1.5.9 Effluent Flow Meter/Chlorine Contact Chamber This unit contains a parshall flume and
ultrasonic flowmeter for measurement of the effluent flow. After flow measurement, the effluent
is detained approximately 30 minutes for chlorine contact. The original chlorine contact
chamber and effluent flow meter have been taken out of service.
1.5.10 Dechlorination System Sulfur Dioxide is diffused in the wastewater to remove all
chlorine residuals after chlorine contact. Dechlorination is instantaneous upon introduction of
sulfur dioxide at the exit of the chlorine contact chamber.
1.5.11 Effluent Pump Station This station receives all flows from the WWTP and transports
it to the Post Aeration Unit. The station is equipped with two 521 GPM submersible pumps.
The pumps are float controlled.
1101 1.0 - 5

Vanceboro WWTP 0 & NI Manual 12/94
1.5.12 Post Aeration Unit Dissolved oxygen is added to the effluent from the atmosphere
through the cascading action of this unit. As the water tumbles over step after step, air enters
the turbulent flow of liquid. The original post aeration basin has been taken out of service.
1.5.13 Sampler System Automatic composite influent and effluent samplers are provided to
take samples of the raw and treated wastewater for laboratory testing.
•
1.5.14 Inverted Siphon at Maul Swamp The inverted siphon enables the effluent to pass under
Maul Swamp on its way to the new Swift Creek discharge point. The effluent flows down and
back up again by the hydraulic head in the upstream manhole. The inverted siphon consists of
double 6" polyethylene pipes.
1.5.15 Return Sludge Pump Stations The return sludge pump stations deliver sludge from the
clarifiers to the oxidation ditches. These stations also can waste sludge to the digesters.
1.5.16 Sludge Transfer Pump Stations The sludge transfer pump stations are provided to
accomplish a variety of activities including transfer of digested sludge to drying beds, return of
filter backwash to aeration, return of drying bed filtrate to aeration and transfer of digester
supernatant to aeration.
System The polymer feedsystem adds polymer solution to the digested
1.5.17 Polymer Feed S s p y po} g
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sludge from Sludge Transfer Station No. 1 to aid in dewatering of the sludge in the drying beds.
1.5.18 Aerobic Digester The aerobic digesters are provided to aerobically digest and gravity
thicken the waste sludge prior to transporting from the digester to the sludge drying beds by the
sludge transfer pump station.
1.5.19 Sludge Drying Beds The sludge drying beds are provided to dewater digested sludge.
1.5.20 Lab and Maintenance Building This building contains the office and workshop facilities
from which the WWTP is operated. A restroom is also located in this building. A remote
alarm dialer system which monitors the local plant alarm system when the plant is not manned
is located in the building.
1101 1.0 - 6