NC0027103_Modification_20210813

NPDES MAJOR MODIFICATION
APPLICATION
PEMBROKE WASTEWATER TREATMENT PLANT
TOWN OF PEMBROKE, NC
RECEIVED
AuG 1 3 2021
NCDEQ/DW�NPDES
JULY 2021
PREPARED BY:
XX ooten
120 N. BoYLAN AVENUE
RALEIGH,NC 27603
LICENSE No.: F-0115

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EPA Form 2A
(completed Sections 1 — 4 and 6)
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EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009845249 NC0027103 Pembroke WWTP OMB No.2040-0004
Form U.S.Environmental Protection Agency
2A FEPA 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
Pembroke Wastewater Treatment Plant
Mailing address(street or P.O. box)
98 Union Chapel Road
City or town State ZIP code
=
0 Pembroke NC 28372
w..
Contact name(first and last) Title Phone number Email address
8 Tyler Thomas Town Manager [phone] [e-mail]
Location address(street, route number,or other specific identifier) ❑ Same as mailing address
8257 Deep Branch Road
U-
City or town State ZIP code
Pembroke NC 28372
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
o City or town State ZIP code
Contact name(first and last) Title Phone number Email address
0_
1.4 Is the applicant the facility's owner, operator,or both?(Check only one response.)
❑ Owner ❑ Operator ❑r Both
1.5 To which entity should the NPDES permitting authority send correspondence?(Check only one response.)
El Facility El Applicant
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.)
C D Existing Environmental Permits
a NPDES(discharges to surface ❑ RCRA(hazardous waste) ❑ UIC(underground injection
water) control)
NC0027103
o ❑ PSD(air emissions) ❑ Non attainment program (CM) ❑ NESHAPs(CM)
y
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
110009845249 NC0027103 Pembroke 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 t] Own El Maintain
w Pembroke 3,333 0 %combined storm and sanitary sewer 0 Own 0 Maintain
d 0 Unknown 0 Own 0 Maintain
co %separate sanitary sewer 0 Own 0 Maintain
%combined storm and sanitary sewer 0 Own ❑ Maintain
co
0 Unknown 0 Own 0 Maintain
a %separate sanitary sewer 0 Own 0 Maintain
%combined storm and sanitary sewer 0 Own 0 Maintain
co 0 Unknown 0 Own 0 Maintain
E %separate sanitary sewer 0 Own 0 Maintain
to
%combined storm and sanitary sewer 0 Own 0 Maintain
co
0 Unknown 0 Own 0 Maintain
Total
0 Population75
3,333
o Served
Separate Sanitary Sewer System Combined Storm and
Sanitary Sewer
Total percentage of each type of o 0
sewer line(in miles) loo /o o /o
1.8 Is the treatment works located in Indian Country?
o ❑ Yes El No
C.)
c 1.9 Does the facility discharge to a receiving water that flows through Indian Country?
cz
c ❑ Yes El No
1.10 Provide design and actual flow rates in the designated spaces. Design Flow Rate
1.33 mgd
= N Annual Average Flow Rates(Actual)
o
< lis Two Years Ago Last Year This Year
o!
c _o 0.93 mgd 0.84 mgd 1.05 mgd
`� Maximum Daily Flow Rates(Actual)
CD
CI Two Years Ago Last Year This Year
3.66 mgd 2.78 mgd 3.10 mgd
1.11 Provide the total number of effluent discharge points to waters of the United States by type.
o Total Number of Effluent Discharge Points by Type
a Q- Constructed
a'1- Treated Effluent Untreated Effluent Combined Sewer Bypasses Emergency
co- .a Overflows Overflows
0 1 0 0 0 0
EPA Form 3510-2A(Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009845249 NC0027103 Pembroke 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?
❑ Yes ❑ 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 Continuous or Intermittent
Location Discharged to Surface (check one)
Impoundment
❑ Continuous
gpd 0 Intermittent
❑ Continuous
gpd ❑ Intermittent
❑ Continuous
gpd 0 Intermittent
fA
w 1.14 Is wastewater applied to land?
❑ Yes ❑ No 4 SKIP to Item 1.16.
c 1.15 Provide the land application site and discharge data requested below.
Land Application Site and Discharge Data
Continuous or
8 Location Size Average Daily Volume Intermittent
Applied (check one)
co
acres d ❑ Continuous
gp ❑ Intermittent
CD
acres d 0 Continuous
o gp ❑ Intermittent
3 acres d 0 Continuous
10 gp ❑ Intermittent
7, 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 ❑ 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
110009845249 NC0027103 Pembroke 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
-0 Facility name Mailing address(street or P.O. box)
d
City or town State ZIP code
0
co Contact name(first and last) Title
0
d Phone number Email address
aNPDES number of receiving facility(if any) 0 None Average daily flow rate mgd
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
m have outlets to waters of the United States(e.g.,underground percolation,underground injection)?
s ❑ Yes 0 No - SKIP to Item 1.23.
0 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)
Description Volume
acresgpd CI Continuous
❑ Intermittent
❑ Continuous
acres gpd ❑ Intermittent
acresgpd El Continuous
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.
au) Consult with your NPDES permitting authority to determine what information needs to be submitted and when.)
TA
c ❑ Discharges into marine waters(CWA ❑ Water quality related effluent limitation(CWA Section
cr
CU Section 301(h)) 302(b)(2))
0 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?
El Yes ❑ 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
Contractor name
0 McGill Environmental Systems
(company name)
Mailing address
`0 1100 Herring Road
(street or P.O. box)
City, state,and ZIP Vcs Rose Hill,NC 28458
code
c Contact name(first and
0 Larry Walker
last)c�
Phone number [phone]
Email address [e-mail]
Operational and Haul sludge produced by the
maintenance WWTP's aerobic digester and
responsibilities of transports it to a McGill
contractor composting facility.
EPA Form 3510-2A(Revised 3-19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009845249 NC0027103 Pembroke WWTP OMB No.2040-0004
SECTION 2.ADDITIONAL INFORMATION (40 CFR 122.21(j)(1)and (2))
o Outfalls to Waters of the United States
LT
2.1 Does the treatment works have a design flow greater than or equal to 0.1 mgd?
rn
d 0 Yes ❑ No - SKIP to Section 3.
c 2.2 Provide the treatment works'current average daily volume of inflow Average Daily Volume of Inflow and Infiltration
and infiltration.
566,000 gpd
Indicate the steps the facility is taking to minimize inflow and infiltration.
Frequent manhole inspections during rain events;cleaning,televising,and smoke testing of sewer system.
Repairs performed as I/I is found.
2.3 Have you attached a topographic map to this application that contains all the required information?(See instructions for
M Q specific requirements.)
;5) `5
o 2
Q'0 ❑✓ Yes ❑ No
E 2.4 Have you attached a process flow diagram or schematic to this application that contains all the required information?
oal (See instructions for specific requirements.)
6
a-. 0 Yes ❑ No
2.5 Are improvements to the facility scheduled?
❑ Yes ❑ No 4 SKIP to Section 3.
Briefly list and describe the scheduled improvements.
1 Construct an earthen lagoon with an HDPE liner to be utilized as a surge/equalization basin.
Modify the existing influent pump station,oxidation ditch,clarifier, RAS/WAS pump station,and piping and valves for an
E 2. average daily flow(ADF)of 2.0 MGD.
0
0
3.Construct new influent headworks,oxidation ditch,clairifier,and intermediate pump station for an ADF of 2.0 MGD.
0 4.Construct new filters,aerobic digester,and UV disinfection for an ADF of 2.0 MGD.
-o
gs 2.6 Provide scheduled or actual dates of completion for improvements.
Scheduled or Actual Dates of Completion for Improvements
Scheduled Affected Begin End Begin Attainment of
2 Improvement Outfalls Construction Construction Discharge Operational
(from above) (list outtall (MM/DD/YYYY) (MM/DD/YYYY) (MM/DD/YYYY) Level
number) (MM/DD/YYYY)
3 1 001 10/26/2022 10/27/2023 02/01/2023 02/01/2023
-o
2. 001 10/26/2022 10/27/2023 02/01/2023 02/01/2023
3. 001 10/26/2022 10/27/2023 02/01/2023 02/01/2023
4, 001 10/26/2022 10/27/2023 02/01/2023 02/01/2023
2.7 Have appropriate permits/clearances concerning other federal/state requirements been obtained?Briefly explain your
response.
❑ Yes El No ❑ None required or applicable
Explanation:
An Engineering Alternatives Analysis will be filed concurrently with this NPDES permit application.Once the project is
approved by the State,the proper permits will be applied for and obtained for the construction of a 2.0-MGD expansion.
EPA Form 3510-2A(Revised 3-19) Page 5

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009845249 NC0027103 Pembroke 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 NC
H County Robeson
crt
o City or town Pembroke
0
I
Distance from shore o ft. ft. ft.
d Depth below surface 10 ft. ft. ft.
0
Average daily flow rate 1.05 mgd mgd mgd
Latitude 34 35 55" N ° °
Longitude 79° 12 00" W ' "
al
3.2 Do any of the outfalls described under Item 3.1 have seasonal or periodic discharges?
. ❑ Yes 0 No 4 SKIP to Item 3.4.
d
3.3 If so, provide the following information for each applicable outfall.
N Outfall Number Outfall Number Outfall Number
0
iii Number of times per year
g discharge occurs
n Average duration of each
`o discharge(specify units)
oAverage flow of each mgd mgd mgd
R discharge
cco
n Months in which discharge
occurs
3.4 Are any of the outfalls listed under Item 3.1 equipped with a diffuser?
❑ Yes ❑ No 4 SKIP to Item 3.6.
3.5 Briefly describe the diffuser type at each applicable outfall.
cu
a
I- Outfall Number Outfall Number Outfall Number
Vl
m
5
o 6 3.6 Does the treatment works discharge or plan to discharge wastewater to waters of the United States from one or more 1
d •
discharge points?
d
w 0 Yes 0 No 4SKIP 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
110009845249 NC0027103 Pembroke WWTP OMB No.2040-0004
3.7 Provide the receiving water and related information(if known)for each outfall.
Outfall Number 001 Outfall Number Outfall Number
Receiving water name Lumber River
Name of watershed, river, Lumber River
c or stream system
E- U.S.Soil Conservation
% Service 14-digit watershed NA
o code
Name of state Lumber River Basin
management/river basin
U.S. Geological Survey
'D 8-digit hydrologic 03040204
ce cataloging unit code
Critical low flow(acute) NA cfs cfs cfs
Critical low flow(chronic) NA cfs cfs cfs
Total hardness at critical mg/L of mg/L of mg/L of
low flow NA CaCO3 CaCO3 CaCO3
3.8 Provide the following information describing the treatment provided for discharges from each outfall.
Outfall Number 001 Outfall Number Outfall Number
Highest Level of 0 Primary 0 Primary 0 Primary
Treatment(check all that 0 Equivalent to 0 Equivalent to 0 Equivalent to
apply per outfall) secondary secondary secondary
0 Secondary 0 Secondary 0 Secondary
0 Advanced 0 Advanced 0 Advanced
0 Other(specify) 0 Other(specify) 0 Other(specify)
c Disinfection
0
Q Design Removal Rates by
0 Outfall
N
d
c
BOD5 or CBODs 85 % % %
m
E
m TSS 85 %
It
0 Not applicable 0 Not applicable 0 Not applicable
Phosphorus
0 Not applicable 0 Not applicable 0 Not applicable
Nitrogen %
Other(specify) 0 Not applicable 0 Not applicable 0 Not applicable
ok %
EPA Form 3510-2A(Revised 3-19) Page 7

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009845249 NC0027103 Pembroke WWTP OMB No.2040-0004
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.
Gas chlorination is currently used.The expansion will install UV disinfection in place of chlorination/dechlorination.
as
0
Outfall Number on Outfall Number Outfall Number
0
- Disinfection type Chlorine Gas
c.�
N
Seasons used Year Round
co
E
Dechlorination used? El Not applicable ❑ Not applicable ❑ Not applicable
Yes ❑ Yes El 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 ❑ 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 ❑ No 3 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 o01 Outfall Number Outfall Number
Acute Chronic Acute Chronic Acute Chronic
Number of tests of discharge 0 20
water
Number of tests of receiving NA NA
water
3.13 Does the treatment works have a design flow greater than or equal to 0.1 mgd?
❑ 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
reasonable potential to discharge chlorine in its effluent?
cn
❑ Yes S Complete Table B,including chlorine. ❑ No 4 Complete Table B, omitting chlorine.
= 3.15 Have you completed monitoring for all applicable Table B pollutants and attached the results to this application
CD
package?
E 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 ❑ No 4 SKIP to Section 4.
applicable.
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?
El 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
110009845249 NC0027103 Pembroke 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?
El 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 4 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)
07/22/2020 Chronic toxicity tested for Outfall#001.The organism tested was
10/28/2020 Ceriodaphnia dubia.The effluent passed all four chronic toxicity tests:
-0 07/22/2020:5%less organisms produced in sample than in the control
01/21/2021 10/28/2020: 1.7%more organisms produced in sample than in the control
• 01/21/2021: 1.1%more organisms produced in sample than in the control
c 04/28/2021 04/28/2021:0.4%more organisms produced in sample than in the control
as3.22 Regardless of how you provided your WET testing data to the NPDES permitting authority,did any of the tests result in
o toxicity?
❑ Yes ❑ No 4 SKIP to Item 3.26.
tg 3.23 Describe the cause(s)of the toxicity:
CD
N
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?
El Yes ❑ No 4 SKIP to Item 4.7.
4.2 Indicate the number of SIUs and NSCIUs that discharge to the POTW.
Number of SIUs Number of NSCIUs
c
4.3 Does the POTW have an approved pretreatment program?
= 0 Yes ❑ No
g, 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.
yi 4.5 Identify the title and date of the annual report or pretreatment program referenced in Item 4.4. SKIP to Item 4.7.
Town of Pembroke,Pembroke WWTP(NC 0027103) 02/26/2021
2020 Pretreatment Annual Report(PAR)
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
110009845249 NC0027103 Pembroke 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 El No 4 SKIP to Item 4.9.
4.8 If yes, provide the following information:
Annual
Hazardous Waste Waste Transport Method Amount of
Number (check all that apply) Waste Units
Received
❑ Truck ❑ Rail
❑ Dedicated pipe ❑ Other(specify)
0
d ❑ Truck ❑ Rail
❑ Dedicated pipe ❑ Other(specify)
0
❑ Truck 0 Rail
_ ❑ Dedicated pipe ❑ Other(specify)
4.9 Does the POTW receive,or has it been notified that it will receive,wastewaters that originate from remedial activities,
0 including those undertaken pursuant to CERCLA and Sections 3004(7)or 3008(h)of RCRA?
❑ Yes El No 4 SKIP to Section 5.
r.
to 4.10 Does the POTW receive(or expect to receive)less than 15 kilograms per month of non-acute hazardous wastes as
= 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 0 No
SECTION 5.COMBINED SEWER OVERFLOWS(40 CFR 122.21(j)(8))
5.1 Does the treatment works have a combined sewer system?
❑ Yes ❑ No +SKIP to Section 6.
5.2 Have you attached a CSO system map to this application?(See instructions for map requirements.)
0_ 0 Yes ❑ No
R
5.3 Have you attached a CSO system diagram to this application?(See instructions for diagram requirements.)
❑ Yes ❑ No
EPA Form 3510-2A(Revised 3-19) Page 10

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110009845249 NC0027103 Pembroke 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
Q- State and ZIP code
0
0
o County
0 Latitude
0
0 0 o o
c� 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 El Yes 0 No ❑ Yes 0 No ❑ Yes ❑ No
CD
C
0 CSO flow volume 0 Yes 0 No ❑ Yes 0 No ❑ Yes 0 No
CSO pollutant 0 Yes 0 No ❑ Yes ❑ No 0 Yes 0 No
o concentrations
0)
c0 Receiving water quality ❑ Yes 0 No ❑ Yes 0 No ❑ Yes ❑ No
CSO frequency 0 Yes ❑ No ❑ Yes ❑ No ❑ Yes 0 No
Number of storm events ❑ Yes 0 No ❑ Yes ❑ No ❑ Yes 0 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
y the past year
go
cAverage duration per hours hours hours
w event 0 ❑Actual or 0 Estimated ❑Actual or 0 Estimated 0 Actual or 0 Estimated
d
W
o Average volume per event million gallons million gallons million gallons
0 0 Actual or 0 Estimated 0 Actual or 0 Estimated 0 Actual or 0 Estimated
Minimum rainfall causing inches of rainfall inches of rainfall inches of rainfall
a CSO event in last year 0 Actual or 0 Estimated 0 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
110009845249 NC0027103 Pembroke 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
Name of watershed/
stream system
U.S.Soil Conservation ❑Unknown 0 Unknown 0 Unknown
Service 14-digit
watershed code
(if known)
Name of state
management/river basin
U.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
O Section 1:Basic Application ❑ wl variance request(s) ❑ w/additional attachments
Information for All Applicants
❑ Section 2:Additional El wl topographic map El w/process flow diagram
Information El w/additional attachments
✓❑ w/Table A ❑ wl Table D
O Section 3: Information on 0 w/Table B ❑ wl Table E
= Effluent Discharges
❑ w/Table C ❑ w/additional attachments
Section 4: Industrial El w/SIU and NSCIU attachments ❑ wl Table F
❑✓ Discharges and Hazardous ❑ w/additional attachments
0 Wastes
w
❑ Section 5:Combined Sewer El w/CSO map ❑ wl additional attachments
Overflows ❑ w/CSO system diagram
O Section 6:Checklist and ❑ w/attachments
Certification Statement
6.2 Certification Statement
1 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
Tyler Thomas Town Manager
Signature Date signed
' 8-4-2021
EPA Form 3510-2A(Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009845249 NC0027103 Pembroke WWTP 001 OMB No.2040-0004
TABLE A. EFFLUENT PARAMETERS FOR ALL POTWS
Maximum Daily Discharge Average Daily Discharge
Pollutant Number of Analytical ML or MDL
Value Units Value Units Method (include units)
Samples
Biochemical oxygen demand
2 ML
o BODs or 0 CBODs 5.19 mg/L 2.97 mg/L 104 SM5210B 1 mg/L 0 MDL
(report one) _
Fecal coliform 24.7 #/100mL 11.7 #/100mL 104 SM9223B 1/100 mL 0 ML
0 MDL
Design flow rate 3.10 MGD 1.05 MGD 366
pH(minimum) 6.88 s.u.
pH(maximum) 7.68 s.u.
Temperature(winter) 24.0 C 19.0 C 150
Temperature(summer) 28.7 C 24.4 C 101
Total suspended solids(TSS) 13.6 mg/L 5.1 mg/L 104 SM2540D 1 mg/L ML
❑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).
EPA Form 3510-2A(Revised 3-19) Page 13

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009845249 NC0027103 Pembroke 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 Analytical ML or MDL
Pollutant Number of Method' include units
Value Units Value Units Samples ( )
Ammonia(as N) 1.33 mg/L 0.45 mg/L 104 EPA 350.1 0.005 mg/I 1:1❑MMDL
Chlorine <25 ug/L <25 ug/L 156 SM4500CI G-2011 25 ug/L El ML
(total residual,TRC)2 0 MDL
0 ML
Dissolved oxygen 10.19 mg/L 9.01 mg/L 156 EPA 360.1 0.05 mg/L ❑MDL
El ML
Nitrate/nitrite 12.40 mg/L 3.17 mg/L 12 EPA 353.2 0.0044 mg 0 MDL
3.3 mg/L 1.4 mg/L 12 EPA 351.2 0.5 mg/L LI ML
Kjeldahl nitrogen ❑MDL
<5.15 mg/L <5.15 mg/L 1 EPA 1664E 5.15 mg/L El ML
Oil and grease 0 MDL
Phosphorus 2.72 mg/L 0.60 mg/L 12 EPA 365.4 0.0018 mg 0 ML
0 MDL
183 mg/L 183 mg/L 1 SM2540 C-2011 10.0 mg/L LI
Total dissolved solids ❑MLMDL
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

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009845249 NC0027103 Pembroke WWTP 001 OMB No.2040-0004
TABLE C. EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method1 (include units)
Value Units Value Units Samples
Metals,Cyanide,and Total Phenols
Hardness(as CaCO3) 22.3 mg/L 22.3 mg/L 1 SM2340 B-2011 2.50 mg/L LI ML
❑MDL
0 ML
Antimony,total recoverable <0.0100 mg/L <0.0100 mg/L 1 EPA 200.7 0.01 mg/L ❑MDL
Arsenic,total recoverable <0.0100 mg/L <0.0100 mg/L 1 EPA 200.7 0.01 mg/L 0ML
MDL
0 ML
Beryllium,total recoverable <0.00200 mg/L <0.00200 mg/L 1 EPA 200.7 0.002 mg/I 0 MDL
Cadmium,total recoverable <0.00200 mg/L <0.00200 mg/L 1 EPA 200.7 0.002 mg/I 0 ML
❑MDL
0 ML
Chromium,total recoverable <0.0100 mg/L <0.0100 mg/L 1 EPA 200.7 0.01 mg/L ❑MDL
Copper,total recoverable <0.0100 mg/L <0.0100 mg/L 1 EPA 200.7 0.01 mg/L O ML
❑MDL
Lead,total recoverable <0.00500 mg/L <0.00500 mg/L 1 EPA 200.7 0.005 mg/I 0 ML
❑MDL
0 ML
Mercury,total recoverable <0.000200 mg/L <0.000200 mg/L 1 EPA 245.1 0.0002 mg 0 MDL
Nickel,total recoverable <0.0100 mg/L <0.0100 mg/L 1 EPA 200.7 0.01 mg/L El ML
❑MDL
Selenium,total recoverable <0.0100 mg/L <0.0100 mg/L 1 EPA 200.7 0.01 mg/L E7 ML
g ❑MDL
Silver,total recoverable <0.00500 mg/L <0.00500 mg/L 1 EPA 200.7 0.005 mg/I E ML
0 MDL
Thallium, total recoverable <0.00100 mg/L <0.00100 mg/L 1 EPA 200.8 0.001 mg/I El ML
❑MDL
Zinc,total recoverable <0.0500 mg/L <0.0500 mg/L 1 EPA 200.7 0.05 mg/L O ML
❑MDL
0.0298 mg/L 0.0298 mg/L 1 SM4500CN E-2001 0.005 mg/I 2ML
Cyanide ❑MDL
Total phenolic compounds <0.0400 mg/L <0.0400 mg/L 1 EPA 420.4 0.04 mg/L LI MDL
Volatile Organic Compounds
Acrolein <0.0500 mg/L <0.0500 mg/L 1 EPA 624.1 0.05 mg/L ❑MMDL
Acrylonitrile <0.0100 mg/L <0.0100 mg/L 1 EPA 624.1 0.01 mg/L El MDL
Benzene <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I CI ML
0 MDL
Bromoform <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I ❑EI MDL L
EPA Form 3510-2A(Revised 3-19) Page 17

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009845249 NC0027103 Pembroke WWTP 001 OMB No.2040-0004
TABLE C. EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method1 (include units)
Value Units Value Units Samples
<0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I 0 ML
Carbon tetrachloride g ❑MDL
Chlorobenzene <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I ❑MMDL
0 ML
Chlorodibromomethane <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I El MDL
Chloroethane <0.00500 mg/L <0.00500 mg/L 1 EPA 624.1 0.005 mg/I El ML
❑MDL
2-chloroethylvinyl ether <0.0500 mg/L <0.0500 mg/L 1 EPA 624.1 0.05 mg/L O ML
❑MDL
<0.00500 mg/L <0.00500 mg/L 1 EPA 624.1 0.005 mg/I [ID ML
Chloroform MDL
0 ML
Dichlorobromomethane <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I ❑MDL
0 ML
1,1-dichloroethane <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I ❑MDL
0 ML
1,2-dichloroethane <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I ❑MDL
<0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I El ML
trans 1,2 dichloroethylene 0 MDL
1,1-dichloroethylene <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I D ML
MDL
1,2-dichloropropane <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I El ML
❑MDL
<0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I 0 ML
1,3-dichloropropylene 0 MDL
ML
Ethylbenzene <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I 0 MDL
Methyl bromide <0.00500 mg/L <0.00500 mg/L 1 EPA 624.1 0.005 mg/I El ML
❑MDL
<0.00250 mg/L <0.00250 mg/L 1 EPA 624.1 0.0025 mg El ML
Methyl chloride ❑MDL
Methylene chloride <0.00500 mg/L <0.00500 mg/L 1 EPA 624.1 0.005 mg/I El❑MDL
1,1,2,2-tetrachloroethane <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 ML
0.001 mg/I 0 MDL
mg/I El ML
<0.00100 mg/L <0.00100 m /L 1 EPA 624.1 0.001
Tetrachloroethylene g ❑MDL
Toluene <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I El ML
❑MDL
1,1,1-trichloroethane <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I ❑MMDL
1,1,2-trichloroethane <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I El ML
❑MDL
EPA Form 3510-2A(Revised 3-19) Page 18

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009845249 NC0027103 Pembroke WWTP 001 0MB No.2040-0004
TABLE C. EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method1 (include units)
Value Units Value Units Samples
ID ML
Trichloroethylene <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I ❑MDL
<0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I ML
Vinyl chloride 0 MDL
Acid-Extractable Compounds
ML
p-chloro-m-cresol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 MDL
2-chlorophenol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L El ML
❑MDL
2,4-dichlorophenol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L El ML
❑MDL
2,4-dimethylphenol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L O ML
❑MDL
4,6-dinitro-o-cresol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L O ML
❑MDL
2,4-dinitrophenol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 ML
❑MDL
2-nitrophenol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L l7 ML
0 MDL
4-nitrophenol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 ML
❑MDL
Pentachlorophenol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 ML
❑MDL
Phenol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L El ML
❑MDL
2,4,6-trichlorophenol <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L El ML
❑MDL
Base-Neutral Compounds
Acenaphthene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I El ML
❑MDL
Acenaphthylene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I El ML
❑MDL
Anthracene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I El MDL
Benzidine <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L El ML
0 MDL
Benzo(a)anthracene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I El ML
❑MDL
Benzo(a)pyrene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I I ML
MDL
3,4-benzofluoranthene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I El ML
❑MDL
EPA Form 3510-2A(Revised 3-19) Page 19

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009845249 NC0027103 Pembroke WWTP 001 0MB No.2040-0004
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge
Pollutant Analytical ML or MDL
Value Units Value Units Number of Method1 (include units)
Samples
Benzo(ghi)perylene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I 0 ML
0 MDL
<0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I O ML
Benzo(k)fluoranthene g El MDL
Bis(2-chloroethoxy)methane <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L ID ML
0 MDL
Bis(2-chloroethyl)ether <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 ID ML
0.01 mg/L 0 MDL
<0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L ID ML
Bis(2-chloroisopropyl)ether g/ 0 MDL
<0.00300 mg/L <0.00300 mg/L 1 EPA 625.1 0.003 mg/I 0 ML
Bis(2-ethylhexyl)phthalate g/ 0 MDL
4-bromophenyl phenyl ether <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 ID ML
0.01 mg/L 0 MDL
Butyl benzyl phthalate <0.00300 mg/L <0.00300 mg/L 1 EPA 625.1 0.003 mg/I El ML
❑MDL
2-chloronaphthalene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I ID ML
❑MDL
4-chlorophenyl phenyl ether <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L LI ML
0 MDL
Chrysene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I 2 MDL
<0.00300 mg/L <0.00300 m /L 1 EPA 625.1 0.003 mg/ ri ML
di n butyl phthalate g ❑MDL
<0.00300 mg/L <0.00300 m /L 1 EPA 625.1 0.003 mg/ 0 ML
di n octyl phthalate g ❑MDL
Dibenzo(a,h)anthracene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I El ML
❑MDL
1,2-dichlorobenzene <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I t7 ML
❑MDL
1,3-dichlorobenzene <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I ML
❑MDL
1,4-dichlorobenzene <0.00100 mg/L <0.00100 mg/L 1 EPA 624.1 0.001 mg/I Li ML
❑MDL
3,3-dichlorobenzidine <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L Ei ML
❑MDL
Diethyl phthalate <0.00300 mg/L <0.00300 mg/L 1 EPA 625.1 0.003 mg/I ❑MDL
Dimethyl phthalate <0.00300 mg/L <0.00300 mg/L 1 EPA 625.1 0.003 mg/I El ML
❑MDL
2,4-dinitrotoluene <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 ML
❑MDL
2,6-dinitrotoluene <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L O ML
❑MDL
EPA Form 3510-2A(Revised 3-19) Page 20

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110009845249 NC0027103 Pembroke WWTP 001 OMB No.2040-0004
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Value Units Value Units Number of Method1 (include units)
Samples
0 ML
1,2-diphenylhydrazine <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 MDL
0 ML
Fluoranthene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I ❑MDL
E ML
Fluorene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I 0 MDL
ML
Hexachlorobenzene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I El MDL
<0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L ML
0
Hexachlorobutadiene MDL
<0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 ML
Hexachlorocyclo-pentadiene 0 MDL
CI ML
Hexachloroethane <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 MDL
<0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I El ML
Indeno(1,2,3 cd)pyrene ❑MDL
<0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 ML
Isophorone 0 MDL
Naphthalene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I 0 ML
0 MDL
E ML
Nitrobenzene <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L O MDL
N-nitrosodi-n-propylamine <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 ML
0 MDL
El ML
N-nitrosodimethylamine <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 MDL
<0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L 0 ML
N-nitrosodiphenylamine 0 MDL
ML
Phenanthrene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I El MDL
E ML
Pyrene <0.00100 mg/L <0.00100 mg/L 1 EPA 625.1 0.001 mg/I 0 MDL
_
ML
1,2,4-trichlorobenzene <0.0100 mg/L <0.0100 mg/L 1 EPA 625.1 0.01 mg/L El 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).
EPA Form 3510-2A(Revised 3-19) Page 21

Topographic Map

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PEMBROKE WWTP—NC0027103 N Facility Location(Not to scale) ;
Town of Pembroke—Robeson County
ReceMng Stream: Lumber River Stream Class:WS!V,B,Sw,HQWt , „
Drainage Basin: Lumber River Basin Sub-Basin: 03-07-51
Permitted Flow: 1.33 MOD HUG: 03040204
State Grtd/USGS Quad: i22NW I Pembroke Latitude 34'39'55'N Longitude 79'12'00"W
Page 9 of 9

Process Flow Diagram

EXISTING EXISTING
` _ OXIDATION —..__.-11R...----- ► CLARIFIER -1•"' .
DITCH Nu I NO I
J
11111.—_
//pitEXIS`ING EXISTING EXISTINGFLOW EXISTING NEWFILTER
t :,0°- jj/ FLOW OXIDATION LIFT PUMP STATION
SPLI'I'ER —�� DITCH Nu 3 SPLII`TER �' - CLARIFIER
GRAVITY 2 0 MGD NEW BOX BOX NO'_
INFLUENT_y . INFLUENT
FLOW FROM PUMP NEW NEW -Ill.-
SYSTEM STATION FLOW FLOW
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NEW SLUIHiF LINE ----.00.'--'--.* HAULER
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DP.AIi7L15F1ED 3 U moil V 'fl)RIVERL'R
NPDES Permit Modification f W
Proposed Flow Schematic I
* •rrri ;
ITown of Pembroke, NC

Sludge Management Plan

Sludge Management Plan
Town of Pembroke WWTP
NPDES Major Permit Modification
N1,11.20, ) j-c"? 1 e
2\ 1895 ,/ r
ff,o o,\ti
1.1 CA3Q
TOWN OF PEMBROKE
NORTH CAROLINA
Robeson County, NC
July 2021
i 6 U
ItiAi.p
- '-,:c<N6,--- !NI••'Ass' 5c----TA.Ly-zoa_(
R GAS so
Miles R. Galloway, P.E.
TWC 2817-Y
Wooten
120 N.Boylan Avenue
Raleigh,NC 27603-1423
919.828.0531
License No. F-0115

TOWN OF PEMBROKE
SLUDGE MANAGEMENT PLAN
The Town of Pembroke Wastewater Treatment Plant (WWTP) is a 1.33-MGD extended aeration
biological treatment plant that uses oxidation ditches and clarifiers as the secondary treatment
method. Residuals generated at the WWTP include waste activated sludge (WAS) from the
extended aeration process. The WAS from the extended aeration process is pumped on a daily
basis by the operator the aerobic digester (500,000 gallons) for aerobic digestion. Aerobic
conditions are maintained by introducing oxygen through a floating aerator located in the digester.
The aerator provides sufficient air to keep the contents mixed and aerobic, allowing for solids
digestion.
The digester is operated in a fill and decant mode whereas the tank is filled with WAS,the contents
aerated, the solids settled and decanted, and then the tank filled again. Approximately once every
two months the sludge solids from the digester are dewatered on-site by a licensed contractor
(McGill Environmental) and the dewatered solids are hauled off-site by the licensed hauler and
disposed/composted by the licensed hauler.
The Pembroke WWTP is to be expanded from a flow capacity of 1.33 MGD to 2.0 MGD. The
same sludge management process implemented now would continue to be used in the future. The
disposal contract arrangement between the Town of Pembroke and McGill Environmental will
continue in the future as it does today. To accommodate the increase in the sludge wasting volume
associated with the WWTP plant expansion, a second 500,000-gallon aerobic digester will be
constructed as part of the expansion. This tank will be operated a similar fashion as the existing
tank with cycles of fill, aeration, and decanting with the sludge hauler coming on-site to dewater
and remove the sludge. The second digester tank will double the existing digestion capacity and
is sufficient for the future expansion.

2020 Pretreatment Annual Report

Town of Pembroke, Pembroke WWTP(NC 0027103)
2020 Pretreatment Annual Report(PAR)
Narrative
GENERAL INFORMATION
Contact Information:
Town of Pembroke
Mr.Tyler W. Thomas,Town Manager
PO Box 866
Pembroke, NC 28372
Mr.Jason Deese, ORC Town of Pembroke WWTP
PO Box 866
Pembroke, NC 28372
Pretreatment Consultant
Mr. Charles A. Donnell, PE
Capital Projects Manager, Envirolink, Inc.
4700 Homewood Court, Suite 108
Raleigh, NC 27609
General Program information:
In 2020 the Town of Pembroke had only one SIU—Steven Roberts Original Deserts. The Town
recognized that Steven Roberts was violating its IUP limits for BOO and TSS regularly and intended to use
the recently completed HWA to adjust the limits so that it would be less likely to violate them. As a
result of this decision, the Town did not issue notices of violation to Steven Roberts for the limit
violations. This was not in keeping with the approved ERP and Pembroke retroactively identified
individual violations and issued Steven Roberts a single NOV for the period of January 2020 to June of
2020 on July 20, 2020.
Based on the violations from January 2020 to June 2020, Pembroke determined that Steven Roberts was
in Significant Noncompliance (SNC) under both the Chronic Violations criteria and the Technical Review
Criteria. As required, the Town published this information in the newspaper on July 25, 2020. A copy of
the "Affidavit of Publication" is attached. Unfortunately, the period of violation was listed for 2019
instead of 2020 but the actual violation was the same.
The consultant who prepared the HWA was asked to evaluate conditions at the treatment plant and to
recommend maximum limits for Steven Roberts that would not adversely affect the plant's efficacy.The
study revealed that BOD limits could be increased from previous limits. The IUP issued in December
2017 contained BOD limits as follows:
• Samples taken twice per month
• Daily Maximum: 6,000 mg/I

• Monthly Average: 5,000 mg/I
These limits were modified so that Daily Maximum limits were eliminated, and Monthly Average limits
were Increased to 7,500 mg/I. Similarly,TSS limits were modified to eliminate Daily Maximums and
increase Monthly Averages to 2,500 mg/1. The revised 1UP was issued to Steven Roberts in July 2020 but
was not approved by the NC Division of Water Resources until 11/12/20 following receipt of additional
information.
A pretreatment compliance inspection for the Town of Pembroke was completed on June 23, 2020.
Several items were identified that needed to be corrected. A brief description of those corrections is
listed below:
1. The POTW intends to store STMP analytical data in a table for future reviews. An example table
has been requested for use as a model for Pembroke's table.
2. Detection limits for cadmium,chromium and silver have been modified to correspond with the
detection limits listed in the STMP.
3. Per the HWA approval letter from 4/9/2020 the next STMP will be started not later than August
1, 2023 and will be monitored once a quarter.
4. The POTW has copies of approval letters from the Division for current versions of the HWA,
SUO, IWS, ERP and STMP.
5. STMP data will be reported on DMRs during the next sampling event.
As a result of these deficiencies and the failure of the Town to "take appropriate enforcement actions"
against Steven Roberts, the Town was issued an NOV on July 8, 2020. The Town responded to the NOV
on July 24,2020 and indicated that deficiencies were corrected.
The HWA,short term monitoring plan,sewer use ordinance,enforcement response plan, industrial
waste surveys and industrial users permits are all up to date. Dates in the Pretreatment Program Info
Database (attached)are correct.
The Town's incorporation of provisions of the Dental Amalgam Rule into the ERP was approved by DEQ
on September 2, 2020. The two dentists that discharge wastewater to the POTW were required to at
least submit a One-Time Compliance Report by October 12,2020. As of January 1, 2020, no reports had
been received by the Control Authority(CA). The CA therefore delivered a Dental Amalgam Rule fact
sheet and a suggested format for the One-Time Compliance Report to each of two dental facilities in
Pembroke and requested a response, Responses in the format of a "One-Time Compliance Report for
Dental Discharges" were received in January 2021 for a 100%return rate. Both use the Solmetex NXT
Hg5 separator.
General IUP Information:
Steven Roberts Original Deserts IUP was issued to Steven Roberts Original Deserts on 02/21/17. It was
modified on 12/11/17 and re-issued. That permit was effective until 07/31/2020. Steven Roberts
requested that its IUP be re-issued on July 31,2020. The permit was issued to Steven Roberts effective
August 1,2020 and will remain effective until February 29, 2024.

SIU Information:
Steven Roberts Original Deser
ts,
rts.
Steven Roberts Original Deserts bakes cake products and distributes them to various markets, Process
wastewater is separate from domestic sewage and flows to a large (10,000 gallon), pre-cast grease trap,
Effluent from the grease trap flows to the Town's collection system. Samples are collected at the Town
manhole where Steven Roberts effluent enters the collection system.
On November 10,2020,the POTW ORC noticed a large amount of oil In the treatment plant influent,
The ORC drove to Steven Roberts and requested and received permission to inspect the facility's grease
trap. He determined that oil in the effluent from the trap was the same color and consistency as the oil
entering the POTW. On November 16, 2020, the Town sent a letter to Steven Roberts with an extract of
the Town's FOG ordinance that, among other things, requires that grease traps be emptied and serviced
every 30 days at a minimum.
Routine sampling conducted by the POTW ORC in November 2020 identified violations of the revised
permit limits for Steven Roberts for both BOO (8,550 mg/I monthly average) and TSS(2,715 mg/I
monthly average). Accordingly, an NOV was issued to Steven Roberts on December 15, 2020. The NOV
letter reiterated the requirement to service grease traps. Steven Roberts pumped out the grease trap
on December 21'with the POTW ORC observing, Following a slight period of time required for the
grease trap to refill and stabilize, BOD and TSS samples were again taken. Results were well within limits
(BOO was 3,463 mg/I and TSS was 1,095 mg/I). This result was passed along to the Steven Roberts
maintenance supervisor who agreed to continue to clean the grease trap every three weeks.
On December 16, 2020, the production facilities at Steven Roberts were inspected for compliance with
provisions of the IUP. No violations were identified.
Attachments:
• Pretreatment Program Info Database
• PPS Form
• Historic SNC Report
• Affidavit of Publication

-- Pretreatment Program Info Database printed on: 12/22/2020
for Program Name Pembroke t .,,,-.7'"'
$ire i0 Info lmafion IWG%at 7010 1.69
WWTP Name Town of Pembroke _� _ - ... i
Program Approval Date 04/07/2017 TQtow cfs/mgd 120 1 77,52
1Q10 Flow ofs/mgd 97,83 / 63,22
Pretreatment Status Modified WS IV B SW HOW
Stream Classification
Region FRC Basin Number 03-07-51
County Robeson Receiving Stream Name Lumber River
NPDES Number NC0027103 `
NPDES Effective Date Last PAR Rec 02/25/2020 PAR Due Date 03/01/2021 mercury
08/01/2016 1631
Current Fiscal
required
Year PCI Done
NPDES Expire Date 07/31/2019 06/23/2020
POTW is Primary WW I
TP TRUE Last Audit on Audit Year Next
Design Flow rt't«d 1.3300 %Design mgd is SIU permitted 1 3,01 Permitted SIU flow(mgd)(P(_SIU) ,;04
WWTP SIU°s 111111 Program SIUs 1 1.. ?
WWTP CIU s Program CIUs.9 , ' ,,FfVV - `LTA(IP_ ., r -- _ SUO 4R Y
date Inactive Date Next Due 10/01/2024 12/31/2022
Date Received by DWR 10/01/2019 02/06/2014 01/26/2018 02/06/2014 06/10/2020
Date Approved 04/13/2020 02/20/2014 02/05/2018 02/20/2014 09/02/2020
Adopt Date Required
,Date Adopted:_ 04/07/2014
l w
t JL1t1#f tAti l�` Q! fPOJn f .,4 s
x � ' Date Date Date
ate-
07rS Attended Attended Attended
.— r t oire 1111, n$ 7 Pc�(i7�, Phones ext Fax HWA 1 iiksp-FIUP•( tssp PAR' s 3 .—
4,Tyter Th4tilai lt'rtm o 0 s2'1.�m8 i 1 Tyl .., ,�. �'
crr;�Rembrokand'+«om TowtrNt"ao��er PoEtOX 868 - 28312
Mr;Cf►ades oitthe`f 0Pri 3�`322 65?2 _._
. .. __,I. a
:c+afjeflflt'rdlttitPs cotrsw Capital Projects Manager i {
g.f .lason Deese >` 10 506-9529 - fl I I
Jaso pembroTcenc_cos Ti ORC PO BOX 866 g372
Pretreatment Related*Otis from-DWQ N.
DWR Central Office Contact
ivien along
11/28/2017 ` NOV 4017-PC-0705 "
DWR Regional ContactStephanie Zorlo

Chapter 9, PAR. Guidance
Pretreatment Performance Summary (PPS)
I, Pretreatment Town Name: Pembroke, NC
2, "Primary" NPDES Number NC00 27103
or Non_Discharge Permit# if applicable=>
3. PAR Begin Date, please enter 01/01/yyyy 3.=> 1/1/2020
4. PAR End Date, please enter 12/3 1/yyyy 4.=> 12/31/2020
5. Total number of SIUs, includes CIUs 5,=>
6. Number of CIUs 6 => 0
7. Number of SIUs with no IUP, or with an expired IUP 7.=> 0
8. Number of SIUs not inspected by POTW 8.=> 0
9. Number of Sills not sampled by POTW 9.=> 0
to, Number of SIUs in SNC due to 1UP Limit violations 1o._> 1
1 i, Number of SIUs in SNC due to Reporting violations 1 i.=>
12, Number of SIUs in SNC due to violation of a Compliance Schedule,CO,AO or similar 12.=> 0
13. Number of CIUs in SNC 13.=> 0
14, Number of SIUs included in Public Notice 14.=>
15 TotaI number ofSEUs on a compliance schedule, CO, AO or similar 15.=>._ 0
16. Number of NOVs,NNCs or similar assesed to SIUs 16.=> 2
17. Number of Civil Penalties assessed to SIUs 17._> 0
18. Number of Criminal Penalties assessed to SIUs i8._> 0
19. Total Amount of Civil Penalties Collected 19.=> $ 0
20. Number of lUs from which penalties collected 20.=> 0
Foot Notes: AO Administrative Order IUP Industrial User Pretreatment Permit POTW Publicly Owned Treatment Works
CIU Categorical Industrial User NNC Notice of Non-Compliance SILT Significant Industrial User
CO Consent Order NOV Notice of Violation SNC Significant Non-Compliance
ILl Industrial User PAR Pretreatment Annual Report
revised 1/2018: PAR.PPS 2018

h st
0111IVREPORT
Pembroke
2013 2014 2015
2016 2017 20'8
1st half I 2nd half 1st half'12nd half 1st half E 2nd half 1st half 12nd half 1st half 2nd half 1st half 2nd half
2019
1st half I 2nd half
Steven Roberts Original Desserts,LLC PreviousNames:
....... ...
IUP# 002 Pipe# 001 ssu VVord ae ^pion:
IUP_Status:Active High end ctesets
BOO I ( t 1 I jx
Reporting XX f
k
Tss I I I I
IX
An'X'in a semi-annual period indicates snc for the period for the respective parameter.
PRINTED ON 12/16/2020 This information Is compiled from many sources,and has not been verified. PAGE 55
Contact the local pretreatment coordinator or state pretreatment staff if errors are noted.

fl
"
Wastewater Permit Violations
Affidavit of Publication
STATE OF NORTH PUBLIC NOTICE OF SIGNIFICANT INDUSTRIAL WASTEWATER
SS PERMIT VIOLATIONS
CAROLINA} The Town of Pembroke,in
COUNTY OF ROBESON } accordance with Federal and State Regulations is hereby giving Public f
Notice.Listed
below are Significant industrial Users that were in significantnoncaMpllan
($NC)with
Tammy Oxendine, being duly sworn, says: national pretreatment regulations,40 CFR Part 403,and stag pretreatment
regulations,1 6 NCAC 2H.0900,and local pretreatment regulations
That she is Legal Advertising Clerk of the The during the period of January 1 through December 31,2019;Steven Roberts
Robesanlan,a dais newspaper of Desserts—Irt ndusMai user Pretreatment Permit Limits Violations.A continuing effort
Ygeneral circulation, is being made by the industry listed to achieve compliance,Including installation of
printed and published In Lumberton,Robeson County, new equipment and upgrading of existing equipment and continued progress is
North Carolina; that the publication,a copy of which is expected until full compliance le attained.Town of Pembroke,POTW,Tyler W.
attached hereto,was published in the said newspaper on Thames,Town Manager.July 22,2020.
July 25,2020
r,
That said newspaper was regularly issued and circulated
on those dates.
SIGNED: ,,
i
Legal Advertising ark
Subscribed to and sworn to me this 28th day of July 2020.
Oict
•
Clarissa Jackson, Notary 'U;lic,_Robeson County, ti, ovrt'Dri<4ACi <r,
North Carolina ,��:� a{,�S
My commission expires: July 23,2021 S.
.1 iacitNRY
IR
aart
20032308 01007595 91 0-521-0472 y,,,} c `.``4,
4,"1 fiitttt:l O%‘
Becky Maynor
190-Town of Pembroke
EO Box 866
oembroke, NC 28372
1