NC0028037_Renewal (Application)_20230906

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Neil Patel, Owner
City of Lexington
101 Plaza Pkwy
Lexington, NC 27292
Subject: Permit Renewal
Application No. NCO028037
Lexington WTP #1 & 2
Davidson County
Dear Permittee:
NORTH CAROLINA
Environmental Quality
September 06, 2023
The Water Quality Permitting Section acknowledges the September 6, 2023 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. 150B-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.
ec: WQPS Laserfiche File w/application
Sincerely,
A
Cynthia Demery
Administrative Assistant
Water Quality Permitting Section
North Carolina Department of Environmental Quality I Division of Water Resources
Winston-Salem Regional Office 1 450 West Hanes Mill Road Suite 300 1 Winton -Salem. North Carolina 27105
336.776.9800

LEXINGTON
NORTH CAROL 1 N A
WATER RESOURCES
QUALITY FIRST
August 29, 2023
NCDENR/DWR/NPDES Unit
Attn: Wren Thedford
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: NPDES Permit — NCO028037
Lexington WTP
Davidson County
Application for Permit Renewal
Dear Sir/Madam:
RECEIVED
SEP 0 6 2023
NCDEQ/®WR/NP®ES
By this letter and attachments, I am requesting renewal of the NPDES permit for the City of Lexington's
WTP #1 and #2 — NC0028037.
Attached are the following: EPA Application Form 1 & 2C with Tables A,B, & C, Plant schematic, and
narrative of Sludge Management Plan(below).
Narrative of Sludge Management Plan:
Sludge at the two Lexington Water Plants is generated from filter back washing and cleaning of
sedimentation basins. Coagulation at the Water Plants is done with alum.
Backwash water and basin washing water are collected in two holding lagoons. Sludge is allowed to
settle out and water is decanted from the top of each basin. This decanted water constitutes the
permitted discharge.
Concentrated sludge from the holding lagoons has polymer added to accelerate dewatering and is
pumped to one of 6 sand drying beds for air -drying. When the sludge is dry enough, it is removed by a
front-end loader and hauled to the Davidson County Landfill (permit number 29-06) for final disposal.
Please forward comments and questions to my attention at 336-248-3930 ext. 3926 or email
[e-mail]
Water Resources - Public Works - Engineering
st Center Street- Lexington, NC 27292 - 336.248-3930
www.LEXINGTONNC.GOV

LEXINGTON
NORTH CAROLINA
WATER RESOURCES
QUALITY FIRST
Water Resources - Public Works - Engineering
28 West Center Street- Lexington, NC 27292 - 336.248-3930
W W W.LEXINGTONNC.GOV

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
110006710577
NCO028037
Lexington WTP #1 & #2
OMB No.2040-0004
U.S. Environmental Protection Agency
Form
-
EPA
Application for NPDES Permit to Discharge Wastewater
NPDES
GENERAL INFORMATION
SECTION-D
Applicants Not Required to Submit Form 1
1.1
1.1.1
Is the facility a new or existing publicly owned
1 1 2
Is the facility a new or existing treatment works
treatment works?
treating domestic sewage?
If yes, STOP. Do NOT complete No
If yes, STOP. Do NOT No
Form 1. Complete Form 2A.
complete Form 1. Complete
Form 2S.
1.2
Applicants Required to Submit Form 1
1.2.1
Is the facility a concentrated animal feeding
1.2.2
Is the facility an existing manufacturing,
operation or a concentrated aquatic animal
commercial, mining, or silvicultural facility that is
a
production facility?
currently discharging process wastewater?
oYes
4 Complete Form 1 ❑✓ No
❑✓ Yes -* Complete Form No
a
and Form 2B.
1 and Form 2C.
1.2.3
Is the facility a new manufacturing, commercial,
1.2.4
Is the facility a new or existing manufacturing,
mining, or silvicultural facility that has not yet
commercial, mining, or silvicultural facility that
commenced to discharge?
discharges only nonprocess wastewater?
Yes -+ Complete Form 1 0 No
Yes 4 Complete Form No
and Form 2D.
1 and Form 2E.
1.2.5
Is the facility a new or existing facility whose
discharge is composed entirely of stormwater
a
associated with industrial activity or whose
discharge is composed of both stormwater and
non-stormwater?
❑ Yes 4 Complete Form 1 No
and Form 2F
unless exempted by
40 CFR
122.26(b)(14)(x) or
b 15).
SECTIONADDRESS,
• •
Facility Name
2.1
Lexington WTP #1 & #2
0
2.2
EPA Identification Number
U
0
J
110006710577
'C
R
2.3
Facility Contact
Name (first and last)
Title
Phone number
Tom Johnson
Water Resources Director
[phone]
a
Email address
[e-mail]
2.4
Facility Mailing Address
Street or P.O. box
z
28 West Center Street
City or town
State
ZIP code
Lexington
NC
27292
EPA Form 3510-1(revised 3-19) Page 1

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
110006710577
NCO028037
Lexington WTP #1 & #2
OMB No. 2040-0004
N 0
2.5
Facility Location
Street, route number, or other specific identifier
Q 0
2979 Greensboro St ext
rn
0
County name
County code (if known)
Davidson
E
City or town
State ZIP code
z
Lexington
NC 27292
SECTION•D
41
3.1
SIC Code(s)
Description (optional)
NA
w
a>
0
U
N
U
z
3.2
NAICS Code(s)
Description (optional)
-a
`6
U
NA
N
4.1
Name of Operator
City of Lexington
0
4.2
Is the name you listed in Item 4.1 also the owner?
R
E
✓❑ Yes ❑ No
o
4.3
Operator Status
❑ Public —federal ❑ Public —state ✓❑ Other public (specify) municipality
CL
❑Private ❑ Other (specify)
o
4.4
Phone Number of Operator
[phone]
4.5
Operator Address
=
°
Y
Street or P.O. Box
R
E
28 West Center Street
City or town
State
ZIP code
o 0
R
Lexington
NC
27292
a
Email address of operator
O
[e-mail]
SECTION1
0
5.1
Is the facility located on Indian Land?
J
❑ Yes ❑✓ No
EPA Form 3510-1 (revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110006710577 NCO028037 Lexington WTP #1 & #2 0 OMB No. 2040-0004
SECTION'• 1
6.1 Existing Environmental Permits (check all that apply and print or type the corresponding permit number for each)
d
❑ NPDES (discharges to surface
❑ RCRA (hazardous wastes)
❑ UIC (underground injection of
a
water)
fluids)
}N-
NCO028037
El (air emissions)
❑ Nonattainment program (CAA)
❑ NESHAPs (CAA)
w a
❑ Ocean dumping (MPRSA)
❑ Dredge or fill (CWA Section 404)
❑ Other (specify)
X
7.1 I Have you attached a topographic map containing all required information to this application? (See instructions for
R specific requirements.)
❑✓ Yes ❑ No ❑ CAFO—Not Applicable (See requirements in Form 26.)
8.1 Describe the nature of your business.
Drinking Water Treatment Plant. Treats water from lake Thom-A-Lex to provide drinking water to the citizens of
Lexington
y
to
d
C
.N
7
m
w
O
N
3
N
Z
9.1 Does your facility use cooling water?
d ❑ Yes ❑✓ No 4 SKIP to Item 10.1.
R 9.2 Identify the source of cooling water. (Note that facilities that use a cooling water intake structure as described at
a, Y 40 CFR 125, Subparts I and J may have additional application requirements at 40 CFR 122.21(r). Consult with your
a Y NPDES permitting authority to determine what specific information needs to be submitted and when.)
10.1 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)? (Check all that
y apply. Consult with your NPDES permitting authority to determine what information needs to be submitted and
❑ Fundamentally different factors (CWA ❑ Water quality related effluent limitations (CWA Section
Section 301(n)) 302(b)(2))
R ❑ Non -conventional pollutants (CWA ❑ Thermal discharges (CWA Section 316(a))
R Section 301(c) and (g))
❑✓ Not applicable
EPA Form 3510-1 (revised 3-19) Page 3

EPA Identification Number
NPDES Permit Number
Facility Name Form Approved 03/05/19
110006710577
NCO028037
Lexington WTP #1 & #2 OMB No.2040-0004
SECTION•
1
11.1
In Column 1 below, mark the sections of Form 1 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: Activities Requiring an NPDES Permit
❑ w/ attachments
❑✓ Section 2: Name, Mailing Address, and Location
❑ w/ attachments
❑✓ Section 3: SIC Codes
❑ w/ attachments
❑✓ Section 4: Operator Information
❑ w/ attachments
❑✓ Section 5: Indian Land
❑ w/ attachments
..
❑✓ Section 6: Existing Environmental Permits
❑ w/ attachments
d
E
❑✓ Section 7: Map
w/ topographic
❑✓ Elw/ additional attachments
map
65..
c
w
❑✓ Section 8: Nature of Business
❑ w/ attachments
R
❑✓ Section 9: Cooling Water Intake Structures
❑ w/ attachments
�'
-a
❑✓ Section 10: Variance Requests
❑ w/ attachments
c
y
❑✓ Section 11: Checklist and Certification Statement
❑ w/ attachments
d
11.2
Certification Statement
c�
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
Tom Johnson
Water Resources Director
Signature
%UZdBIL
Date signed
1�L
$/
08/25/2023
3
EPA Form 3510-1 (revised 3-19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03105119
110006710577 NCO028037 Lexington WTP #1&#2 OMB No. 2040-0004
Form U.S. Environmental Protection Agency
2C �1W EPA Application for NPDES Permit to Discharge Wastewater
NPDES EXISTING MANUFACTURING, COMMERCIAL, MINING, AND SILVICULTURE OPERATIONS
SECTIONOUTFALL LOCATION
1.1 Provide information on each of the facility's outfalls in the table below.
Outfa
Number Receiving Water Name Latitude Longitude
0 001 Abbotts Creek 35' 85, 48" -80' 19, 7�'
0
SECTION DRAWING 1
a, 2.1 Have you attached a line drawing to this application that shows the water flow through your facility with a water
= 3 balance? (See instructions for drawing requirements. See Exhibit 2C-1 at end of instructions for example.)
J o 0 Yes ❑ No
SECTION-• • Ir
3.1 For each outfall identified under Item 1.1, provide average flow and treatment information. Add additional sheets if
necessary.
**Outfall Number** 001
Operations
Operation Average Flow
Drinking Water Treatment Process 3.2 mgd
c
mgd
Y
R
mgd
-a
° mgd
N
3
0 Treatment Units
LL
a, Description Code from Final Disposal of Solid or
(include size, flow rate through each treatment unit, Table 2C-1 Liquid Wastes Other Than
> retention time, etc.) by Discharge
Flocculation 1G
Sedimentation lU
Pre disinfection 2H
Filtration 1V
EPA Form 3510-2C (Revised 3-19) Page 1

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03105119
110006710577
NCO028037
Lexington WTP #1&#2
OMB No. 2040-0004
3.1
**Outfall Number** 001
Cont.
Operations Contributing
to Flow
Operation
Average Flow
Drinking Water Treatment Process
3.2 mgd
mgd
mgd
mgd
Treatment
Description
Units
Code from
Final Disposal of Solid or
(include size, flow rate through each treatment unit,
Table 2C-1
Liquid Wastes Other Than
retention time, etc.)
by Discharge
Sludge Lagoons
5T
c
Decant Water
4A
0
U
=
Dechlorination
5F
m
E
w.
Drying Beds
5H
**Outfall Number**
R
yOperations
o
Operation
Avera a Flow
U-
mgd
d
a'
mgd
mgd
mgd
Treatment
Description
Units
Code from
Final Disposal of Solid or
(include size, flow rate through each treatment unit,
Table 2C-1
Liquid Wastes Other Than
retention time, etc.)
by Discharge
3.2
Are you applying for an NPDES permit to operate a privately owned treatment works?
❑ Yes ❑✓ No 4 SKIP to Section 4.
3.3
Have you attached a list that identifies each user of the treatment works?
co�
❑ Yes ❑ No
EPA Form 3510-2C (Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05119
110006710577 NCO028037 Lexington WTP #1&#2 OMB No. 2040-0004
SECTION• 1
4.1 Except for storm runoff, leaks, or spills, are any discharges described in Sections 1 and 3 intermittent or seasonal?
❑✓ Yes ❑ No -* SKIP to Section 5.
4.2
Provide information
on intermittent or seasonal flows for each applicable outfall.
Attach additional pages, if necessary.
Frequency
Flow
Rate
Outfall
Operation
Duration
Average
Average
Long -Term
Maximum
Number
(list)
Da sMeek
Months/Year
Average
Dail
Discharge Flow
1 days/week
12 months/year
.195 mgd
.750 mgd
7 days
y
30
001
days/week
months/year
mgd
mgd
days
LL
days/week
months/year
mgd
mgd
days
E
days/week
months/year
mgd
mgd
days
m
days/week
months/year
mgd
mgd
days
c
days/week
months/year
mgd
mgd
days
days/week
months/year
mgd
mgd
days
days/week
months/year
mgd
mgd
days
days/week
months/year
mgd
mgd
days
SECTION"•D
5.1
•
Do any effluent
1
limitation guidelines (ELGs) promulgated
by EPA under Section
304 of the CWA
apply to your
facility?
❑ Yes
❑✓ No 4
SKIP to Section 6.
H
5.2
Provide the following information on applicable ELGs.
ELG Cate ory
ELG Subcategory
Regulatory Citation
w
m
R
V
Q
a
Q
5.3
Are any of the applicable ELGs expressed in terms of production (or other measure of operation)?
❑ Yes ❑ No -* SKIP to Section 6.
0
5.4
Provide an actual measure of daily production expressed in terms and units of applicable ELGs.
J
0
Outfall
Number
Operation, Product, or Material
Quantity per Day
Unit of
Measure
d
m
0
u
3
a
0
a
EPA Form 3510-2C (Revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110006710577 NC0028037 Lexington WTP #1&#2 OMB No. 2040-0004
SECTION. IMPROVEMENTS (40
6.1 Are you presently required by any federal, state, or local authority to meet an implementation schedule for constructing,
upgrading, or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
❑ Yes ❑✓ No 4 SKIP to Item 6.3.
6.2
Briefly identify each applicable project in the table below.
Affected
Final Compliance Dates
E
Brief Identification and Description of
Outfalls
Source(s) of
c
Project
(list outfall
Discharge
Required
Projected
`L
number
E
R
N
N
M
R
61
n
6.3 Have you attached sheets describing any additional water pollution control programs (or other environmental projects
that may affect your discharges) that you now have underway or planned? (optional item)
❑ Yes ❑ No ✓❑ Not applicable
SECTION.-,
i
See the instructions to determine the pollutants and parameters you are required to monitor and, in turn, the tables you must
complete. Not all applicants need to complete each table.
Table A. Conventional and Non -Conventional Pollutants
7.1
Are you requesting a waiver from your NPDES permitting authority for one or more of the Table A pollutants for any of
your outfalls?
❑ Yes ❑✓ No 4 SKIP to Item 7.3.
7.2
If yes, indicate the applicable outfalls below. Attach waiver request and other required information to the application.
Outfall Number Outfall Number Outfall Number
7.3
Have you completed monitoring for all Table A pollutants at each of your outfalls for which a waiver has not been
N
requested and attached the results to this application package?
❑✓ Yes ❑ No; a waiver has been requested from my NPDES
ermitting authority for all pollutants at all outfalls.
R
,
Table B.
Toxic Metals, Cyanide, Total Phenols, and Organic Toxic Pollutants
-19
7.4
Do any of the facility's processes that contribute wastewater fall into one or more of the primary industry categories
=
listed in Exhibit 2C-3? (See end of instructions for exhibit.)
❑ Yes ❑✓ No 4 SKIP to Item 7.8.
Y
d
7.5
Have you checked "Testing Required" for all toxic metals, cyanide, and total phenols in Section 1 of Table B?
w
❑ Yes ❑ No
7.6
List the applicable primary industry categories and check the boxes indicating the required GC/MS fraction(s) identified
in Exhibit 2C-3.
Primary Industry Category
Required GCIMS Fraction(s)
Check applicable boxes.
❑ Volatile ❑ Acid ❑ Base/Neutral ❑ Pesticide
❑ Volatile ❑ Acid ❑ Base/Neutral ❑ Pesticide
❑ Volatile ❑ Acid ❑ Base/Neutral ❑ Pesticide
EPA Form 3510-2C (Revised 3-19) Page 4

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
110006710577F
NCO028037
Lexington WTP #1&#2
OMB No.2040-0004
7.7
Have you checked "Testing Required" for all required pollutants in Sections 2 through 5 of Table B for each of the
GC/MS fractions checked in Item 7.6?
❑ Yes ❑ No
7.8
Have you checked `Believed Present' or "Believed Absent' for all pollutants listed in Sections 1 through 5 of Table B
where testing is not required?
© Yes ❑ No
7.9
Have you provided (1) quantitative data for those Section 1, Table B, pollutants for which you have indicated testing is
required or (2) quantitative data or other required information for those Section 1, Table B, pollutants that you have
indicated are "Believed Present' in your discharge?
❑✓ Yes ❑ No
7.10
Does the applicant qualify for a small business exemption under the criteria specified in the instructions?
❑ Yes 4 Note that you qualify at the top of Table B, ❑✓ No
a
then SKIP to Item 7.12.
7.11
Have you provided (1) quantitative data for those Sections 2 through 5, Table B, pollutants for which you have
E5
determined testing is required or (2) quantitative data or an explanation for those Sections 2 through 5, Table B,
N
pollutants you have indicated are "Believed Present' in your discharge?
N❑
Yes ❑ No
Table C. Certain Conventional and Non -Conventional Pollutants
7.12
Have you indicated whether pollutants are `Believed Present' or "Believed Absent' for all pollutants listed on Table C
for all outfalls?
;�
❑✓ Yes ❑ No
7.13
Have you completed Table C by providing (1) quantitative data for those pollutants that are limited either directly or
indirectly in an ELG and/or (2) quantitative data or an explanation for those pollutants for which you have indicated
16
'Believed Present'?
_
d
❑� Yes ❑ No
w
Table D. Certain Hazardous Substances and Asbestos
7.14
Have you indicated whether pollutants are `Believed Present' or "Believed Absent' for all pollutants listed in Table D for
all outfalls?
❑ Yes ❑✓ No
7.15
Have you completed Table D by (1) describing the reasons the applicable pollutants are expected to be discharged
and (2) by providing quantitative data, if available?
❑ Yes ❑✓ No
Table E. 2,3,7,8-Tetrachlorod ibenzo- -Dioxin 2,3,7,8-TCDD
7.16
Does the facility use or manufacture one or more of the 2,3,7,8-TCDD congeners listed in the instructions, or do you
know or have reason to believe that TCDD is or may be present in the effluent?
❑ Yes 4 Complete Table E. ❑✓ No 4 SKIP to Section 8.
7.17
Have you completed Table E by reporting qualitative data for TCDD?
❑ Yes ❑✓ No
SECTIONOR
MANUFACTURED TOXICSi
Is any pollutant listed in Table B a substance or a component of a substance used or manufactured at your facility as
8.1
an intermediate or final product or byproduct?
w
❑ Yes ❑✓ No 4 SKIP to Section 9.
U
3
8.2
List the pollutants below.
`o
1. 4. 7.
2. 5. 8.
3. 6. 9.
EPA Form 3510-2C (Revised 3-19) Page 5

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
W 110006710577 NCO028037 Lexington TP #1&#2 OMB No. 2040-0004
E-ECTION 9. BIOLOGICAL• 1
9.1 Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made
within the last three years on (1) any of your discharges or (2) on a receiving water in relation to your discharge?
❑✓ Yes ❑ No 4 SKIP to Section 10.
f'
9.2
Identify the tests and their
Durposes below.
Submitted to NPDES
Test(s)
Purpose of Test(s)
Permitting Authority?
Date Submitted
x
0
Chronic Toxicity
Required by NPDES
0 Yes ❑ NO
05/10/2023
•2U
Permit
0
-m
❑ Yes ❑ No
❑ Yes ❑ No
�'ECTION
10. CONTRACT,i
10.1
Were any of the analyses reported in Section 7 performed by a contract laboratory or consulting firm?
M Yes ❑ No 4 SKIP to Section 11.
10.2
Provide information for each contract laboratory or consulting
firm below.
Laboratory Number 1
Laboratory Number 2
Laboratory Number 3
Name of laboratory/firm
Cameron Testing
Meritech Labs Inc
Laboratory address
219 S Steele Street
642 Tamco Road
c
Q
Sanford NC 27330
Reidsville, NC 27320
Y
U
A
C
0
Phone number
[phone]
[phone]
Pollutant(s) analyzed Total Copper Total Zinc toxicity
Aluminum, Manganese
Total Phosphorous
Total Nitrogen
Hardness
11.1
Has the NPDES permitting authority requested additional information?
❑ Yes ❑✓ No 4 SKIP to Section 12.
0
11.2
List the information requested and attach it to this application.
E
O
1. 4.
N
C
O
2. 5.
a
3. 6.
EPA Form 3510-2C (Revised 3-19) Page 6

EPA Identification Number
NPDES Permit Number Facility Name Form Approved 03/05/19
110006710577
NCO028037 Lexington WTP #1&#2 OMB No. 2040-0004
SECTION•
1
In Column 1 below, mark the sections of Form 2C that you have completed and are submitting with your application.
12.1
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 complete all sections or provide attachments.
Column 1
Column 2
✓❑ Section 1: Outfall Location
❑ w/ attachments
❑✓ Section 2: Line Drawing
✓❑ w/ line drawing ❑ w/ additional attachments
w/ list of each user of
Section 3: Average Flows and
❑ wl attachments ❑ privately owned treatment
Treatment
works
❑✓ Section 4: Intermittent Flows
❑ w/ attachments
❑✓ Section 5: Production
❑ wl attachments
w/ optional additional
❑✓ Section 6: Improvements
Elw/ attachments ❑ sheets describing any
additional pollution control
tans
❑ wl request for a waiver and ❑ w/ explanation for identical
supporting information outfalls
d
w/ small business exemption ❑ w/ other attachments
❑
request
N
❑ Section 7: Effluent and Intake
❑ w/ Table A ❑ w/ Table B
Characteristics
0
✓❑ w/ Table C ❑ w/ Table D
w/ analytical results as an
❑ w/ Table E ❑
attachment
R❑
Section 8: Used or Manufactured
❑ w/ attachments
MnToxics
❑ Section 9: Biological Toxicity
❑ w/ attachments
Tests
U
✓❑ Section 10: Contract Analyses
❑ w/ attachments
✓❑ Section 11: Additional Information
❑ w/ attachments
❑ Section 12: Checklist and
❑ w/ attachments
Certification Statement
12.2
Certification Statement
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
Tom Johnson
Water Resources Director
Signature
r�s�23
Date signed
/9j'i1� //Kd6rL v I
08/25/2023
I-,
EPA Form 3510-2C (Revised 3-19) Page 7

EPA Identification Number
110006710577
NCO028037
Name
Lexington WTP #1&#2
ill Number
001
Form Approved 03/05/19
OMB No. 2040-0004
TABLE A. CONVENTIONAL AND NON•
• '• 1
Effluent
Intake
Waiver
0 tional
Maximum
Daily
Maximum
Monthly
Term
e Daily
Number of
Long -Term
Number of
Pollutant Requested
Units
(specify)
(if applicable)
Discharge
Discharge
LDischarge
Analyses
Average Value
Analyses
(required)
if available
ilable
❑ Check here if you have applied to your NPDES permitting authority
for a waiver for all of the pollutants listed on this table for the noted outfall.
1'
Biochemical oxygen demand
❑
Concentration
Mass
(BOD5)
2'
Chemical oxygen demand
❑
Concentration
Mass
(COD)
Concentration
3.
Total organic carbon (TOC)
❑
Mass
Concentration
mgl
45
30
7.97
6
4.
Total suspended solids (TSS)
❑
Mass
Concentration
5.
Ammonia (as N)
❑
Mass
6.
Flow
❑
Rate
Temperature (winter)
❑
°C
°C
7.
Temperature (summer)
❑
°C
°C
pH (minimum)
❑
Standard units
S.U.
>6
<9
7.3
6
8.
pH (maximum)
❑
Standard units
S.U.
7
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 3510-2C (Revised 3-19) Page 9

This page intentionally left blank.

EPAIdentification Num
ber I NP NCO028037mber I Lexington WTP #1&#2 Outfa001mber Facility Namell Nu
Form Approved 03/05/19
OMB No. 2040-0004
TOXICTABLE B.
IE,
TOTAL PHENOLS,I
ORGANIC TOXIC'
Presence or Absence
• 1
Intake
check one
Effluent
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long.
(and CAS Number, if available)
Required
Believed
Believed
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
Discharge
of
Analyses
Average
of
Analyses
(required)
(if available)
if available
Value
❑ Check here if you qualify as a small business per the instructions to Form 2C and, therefore, do not need to submit quantitative data for any of the organic toxic pollutants in Sections
2 through 5 of this table. Note, however, that you must still indicate in the appropriate column of this table if you believe any of the pollutants listed are present in your discharge.
Section 1. Toxic Metals, Cyanide, and Total Phenols
1.1
Antimony, total
Concentration
Mass
(7440-36-0)
1.2
Arsenic, total
❑
Concentration
Mass
(7440-38-2)
1.3
Beryllium, total
Concentration
Mass
(7440-41-7)
1.4
Cadmium, total
Concentration
Mass
(7440-43-9)
1.5
Chromium, total
Concentration
Mass
(7440-47-3)
1.6
Copper, total
Concentration
ug/l
47.85
41.45
5.4
6
Mass
(7440-50-8)
1.7
Lead, total
❑
❑
✓I
Concentration
Mass
(7439-92-1)
1.8
Mercury, total
Concentration
Mass
(7439-97-6)
1'9
Nickel, total
El
El
IZI
Concentration
Mass
(7440-02-0)
1.10
Selenium, total
Concentration
Mass
(7782-49-2)
LSilver,
, -1.11
total
El
IZI
Concentration
Mass
(7440-22-4)
EPA Form 3510-2C (Revised 3-19) Page 11

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
110006710577 NC0028037 Lexington WTP #1&#2 1 001
Form Approved 03/05/19
OMB No. 2040-0004
TOXICTABLE B. IE,
TOTAL PHENOLS,I
ORGANIC TOXIC'•
1
Presence or Absence
Intake
check one
Effluent
(optional)
Poll utant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long -
(and CAS Number, if available)
Required
Believed
Believed
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
Discharge
of
Analyses
Average
of
Analyses
(required)
(if available)
if available
Value
1.12
Thallium, total
El
❑
❑
Concentration
(7440-28-0)
Mass
1.13
Zinc total
Concentration
ug/l
574.4
666.5
10.6
(7440-66-6)
Mass
1.14
Cyanide, total
❑
Concentration
(57-12-5)
Mass
1.15
Phenols, total
❑
❑
❑✓
Concentration
Mass
Section 2.Organic Toxic Pollutants (GC/MS Fraction
—Volatile Compounds)
21
Acrolein
0
❑
❑
Concentration
(107-02-8)
Mass
2.2
Acrylonitrile
❑
❑
0
Concentration
(107-13-1)
Mass
2.3
Benzene
❑
❑
0
Concentration
(71-43-2)
Mass
2.4
Bromoform
❑
11
El
Concentration
(75-25-2)
Mass
2.5
Carbon tetrachloride
Concentration
(56-23-5)
Mass
2.6
Chlorobenzene
Concentration
Mass
(108-90-7)
2.7
Chlorodibromomethane
Concentration
(124-48-1)
Mass
2.8
Chloroethane
Concentration
(75-00-3)
Mass
EPA Form 3510-2C (Revised 3-19) Page 12

Identification Number NPDES Permit Number Facility Name Outfall Number
110006710577 1 NCO028037 Lexington WTP #1&#2 001
Form Approved 03/05/19
OMB No. 2040-0004
:
•
•
• • • '
Presence or Absence
• 10111WO11111.W.W1
Intake
check one
Effluent
(optional)
Pollutant/Parameter
(and CAS Number, if available)
Testing
Required
Believed
Believed
Units
(specify)
Maximum
Maximum
Long -Term
Average
Number
Long -
Term
Number
Present
Absent
Daily
Discharge
Monthly
Discharge
Daily
of
Average
of
(required)
(if available)
Discharge
Analyses
Value
Analyses
if available
2.9
2-chloroethylvinyl ether
❑
11
❑
Concentration
(110-75-8)
Mass
2.10
Chloroform (67-66-3)
❑
❑
❑✓
Concentration
Mass
2.11
Dichlorobromomethane
✓
Concentration
(75-27-4)
Mass
212
11-dichloroethane
1:1
El
✓
Concentration
(75-34-3)
Mass
2.13
1 2-dichloroethane
Concentration
Mass
(107-06-2)
2.14
11-dichloroethylene
✓
Concentration
Mass
(75-35-4)
2.15
12-dichloropropane
❑
El❑
Concentration
(78-87-5)
Mass
2.16
1 3-dichloropropylene
El
El
IZI
Concentration
Mass
(542-75-6)
2.17
Ethylbenzene
Concentration
Mass
(100-41-4)
218
Methyl bromide
❑
❑
❑
Concentration
Mass
(74-83-9)
219
Methyl chloride
❑
❑
✓❑
Concentration
Mass
(74-87-3)
2.20
Methylene chloride
❑
✓❑
Concentration
Mass
(75-09-2)
2.21
1 1,2 2- tetrachloroethane
Concentration
(79-34-5)
Mass
EPA Form 3510-2C (Revised 3-19) Page 13

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05119
110006710577 NCO028037 Lexington WTP #1&#2 001 OMB No. 2040-0004
Intake
Presence or Absence
check one
Effluent
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long -
(and CAS Number, if available)
Required
Believed
Believed
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
Discharge
g
of
Analyses
Average
of
Analyses
(required)
(if available)
if available
Value
2.22
Tetrachloroethylene
❑
❑
❑
Concentration
(127-184)
Mass
2.23
Toluene
Concentration
(108-88-3)
Mass
2.24
1 2-trans-dichloroethylene
❑
❑
✓❑
Concentration
(156-60-5)
Mass
2.25
1 1,1-trichloroethane
❑
❑
El
Concentration
(71-55-6)
Mass
2.26
1 1,2-trichloroethane
❑
❑
Concentration
(79-00-5)
Mass
2.27
Trichloroethylene
❑
Concentration
Mass
(79-01-6)
2.28
Vinyl chloride
❑
❑
❑
Concentration
(75-01-4)
Mass
Section 3.Organic Toxic Pollutants (GC/MS
Fraction
—Acid Compounds)
3.1
2-chlorophenol
❑
El
❑
Concentration
(95-57-8)
Mass
3.2
2 4-dichlorophenol
❑
❑
❑
Concentration
(120-83-2)
Mass
3.3
2 4-dimethylphenol
❑
❑
❑
Concentration
(105-67-9)
Mass
3.4
4 6-dinitro-o-cresol
❑
❑
❑
Concentration
(534-52-1)
Mass
r3.52
4-dinitrophenol
Concentration
Mass
(51-28-5)
EPA Form 3510-2C (Revised 3-19) Page 14

EPA Identification Number NPDES Permit Number I Facility Name Outfall Number I Form Approved 03/05/19
110006710577 NCO028037 Lexington WTP #1&#2 001 OMB No.2040-0004
Testing
Required
Presence or Absence
check one
MORONI
Units
(specify)
Effluent
Intake
(optional)
ter
7CASNumber,ilable)
Believed
Present
Believed
Absent
Maximum
Daily
Discharge
(required)
Maximum
Monthly
Discharge
(if available)
Long -Term
Average
Daily
Discharge
g
if available
Number
of
Analyses
Long-
Term
Average
Value
Number
of
Analyses
3.6
2-nitrophenol
(88-75-5)
El
IZI
Concentration
Mass
3.7
4-nitrophenol
(100-02-7)
Concentration
Mass
3.8
p-chloro-m-cresol
(59-50-7)
Concentration
Mass
3.9
Pentachlorophenol
(87-86-5)
Concentration
Mass
3.10
Phenol
(108-95-2)
Concentration
Mass
3.11
2 4,6-trichlorophenol
(88-05-2)
Concentration
Mass
Section 4.Organic Toxic Pollutants GCIMS
Fraction
—Base /Neutral
Compounds
4.1
Acenaphthene
(83-32-9)
Concentration
Mass
4.2
Acenaphthylene
(208-96-8)
Concentration
Mass
4.3
Anthracene
(120-12-7)
El
El
IZI
Concentration
Mass
4.4
Benzidine
(92-87-5)
El
11
El
Concentration
Mass
4.5
Benzo (a) anthracene
(56-55-3)
Concentration
Mass
L4.6
Benzo (a) pyrene
(50-32-8)
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 15

EPA Identification Number NPDES Permit Number Facility Name
Outfall Number Form Approved 03/05/19
110006710577 NCO028037 Lexington WTP #1&#2
001 OMB No. 2040-0004
TABLE•XIC METALS, CYANIDE, TOTAL PHENOLS,ORGANIC TOXIC-• 1
Presence or Absence
Intake
check one
Effluent (optional)
Pollutant/Parameter Testing Units
Maximum
Maximum
Long -Term
Long -
(and CAS Number, if available) Required Believed Believed (specify)
Daily
Monthly
Average
Number
Term
Number
Present Absent
Discharge
Discharge
Daily
Discharge
of
Analyses
Average
of
Analyses
(required)
(if available)
if available
Value
4.7
3 4-benzofluoranthene
❑
❑
❑
Concentration
Mass
(205-99-2)
4.8
Benzo (ghi) perylene
El
El
0
Concentration
Mass
(191-24-2)
4.9
Benzo (k) fluoranthene
El
❑
El
Concentration
Mass
(207-08-9)
4.10
Bis (2-chloroethoxy) methane
❑
❑
❑
Concentration
Mass
(111-91-1)
4.11
Bis (2-chloroethyl) ether
❑
❑
❑
Concentration
Mass
(111-44-4)
4.12
Bis (2-chloroisopropyl) ether
❑
❑
❑
Concentration
Mass
(102-80-1)
4.13
Bis (2-ethylhexyl) phthalate
El
El
❑
Concentration
(117-81-7)
Mass
4.14
4-bromophenyl phenyl ether
Concentration
Mass
(101-55-3)
4.15
Butyl benzyl phthalate
❑
❑
Concentration
Mass
(85-68-7)
4.16
2-chloronaphthalene
❑
❑
❑
Concentration
Mass
(91-58-7)
4.17
4-chlorophenyl phenyl ether
El
1:1
El
Concentration
Mass
(7005-72-3)
4.18
Chrysene
❑
❑
El
Concentration
(218-01-9)
Mass
4.19
Dibenzo (a,h) anthracene
1:1❑
❑
�ConcEntration
ass
(53-70-3)
EPA Form 3510-2C (Revised 3-19) Page 16

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
110006710577 1 NCO028037 Lexington WTP #1&#2 1 001
Form Approved 03/05/19
OMB No. 2040-0004
:
•I
ILSI[IF-114;1;1:•
0 WS
Presence or Absence
• -• 1
Intake
check one
Effluent
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long.
(and CAS Number, if available)
Required
Believed
Believed
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
Discharge
of
Analyses
Average
of
Analyses
(required)
(if available)
f available
Value
4.20
12-dichlorobenzene
❑
❑
❑
Concentration
Mass
(95-50-1)
4.21
13-dichlorobenzene
❑
❑
❑
Concentration
Mass
(541-73-1)
4.22
1 4-dichlorobenzene
❑
✓❑
Concentration
Mass
(106-46-7)
4.23
3 3-dichlorobenzidine
❑
❑
IZI
Concentration
Mass
(91-94-1)
4.24
Diethyl phthalate
❑
❑
✓❑
Concentration
Mass
(84-66-2)
4.25
Dimethyl phthalate
✓❑
Concentration
Mass
(131-11-3)
4.26
Di-n-butyl phthalate
©
Concentration
Mass
(84-74-2)
4.27
2 4-dinitrotoluene
❑
❑
❑✓
Concentration
Mass
(121-14-2)
4.28
2 6-dinitrotoluene
❑
❑
IZI
Concentration
Mass
(606-20-2)
4.29
Di-n-octyl phthalate
Concentration
Mass
(117-84-0)
4.30
1,2-Diphenylhydrazine
Concentration
Mass
(as azobenzene) (122-66-7)
4.31
Fluoranthene
Concentration
Mass
(206-44-0)
[4.32
Fluorene
El
❑
E✓
Concentration
Mass
(86-73-7)
EPA Form 3510-2C (Revised 3-19) Page 17

k Identification Number NPDES Permit Number Facility Name Outfall Number
110006710577 1 NCO028037 Lexington WTP #1&#2 001
Form Approved 03/05/19
OMB No. 2040-0004
Intake
Presence or Absence
check one
Effluent
(optional)
Pollutant/Parameter
Testing
Units
Maximum
Maximum
Long -Term
Long -
(and CAS Number, if available)
Required
Believed
Believed
(specify)
Daily
Monthly
Average
Number
Term
Number
Present
Absent
Discharge
Discharge
Daily
of
Average
of
(required)
(if available)
Discharge
Analyses
Value
Analyses
if available
4.33
Hexachlorobenzene
El
1:1
El
Concentration
Mass
(118-74-1)
4.34
Hexachlorobutadiene
❑
❑
Concentration
Mass
(87-68-3)
4.35
Hexachlorocyclopentadiene
Concentration
Mass
(77-47-4)
4.36
Hexachloroethane
❑
❑
❑
Concentration
(67-72-1)
Mass
4.37
Indeno (1,2,3-cd) pyrene
Concentration
Mass
(193-39-5)
4.38
Isophorone
❑
❑
❑
Concentration
(78-59-1)
Mass
4.39
Naphthalene
Concentration
(91-20-3)
Mass
4.40
Nitrobenzene
❑
❑
Concentration
(98-95-3)
Mass
4.41
N-nitrosodimethylamine
❑
❑
El
Concentration
Mass
(62-75-9)
4.42
N-nitrosodi-n-propylamine
Concentration
Mass
(621-64-7)
4.43
N-nitrosodiphenylamine
❑
Concentration
Mass
(86-30-6)
4.44
Phenanthrene
❑
Concentration
Mass
(85-01-8)
I4.45
PyreneEl
El
Concentration
Mass
(129-00-0)
EPA Form 3510-2C (Revised 3-19) Page 18

EPA Identification Nun
110006710577
DES Permit Number
NCO028037
Name
Lexington WTP #1&#2
Outfall Number
001
Form Approved 03/05/19
OMB No. 2040-0004
Presence or Absence
Intake
check one
Effluent
(optional)
Pollutant/Parameter
(and CAS Number, if available)
Testing
Required
Believed
Believed
Units
(specify)
Maximum
Maximum
Long -Term
Average
Number
Long -
Term
Number
Present
Absent
Daily
Discharge
Monthly
Discharge
Daily
of
Average
of
(required)
(if available)
Discharge
Analyses
Value
Analyses
f available
1 2 4-trichlorobenzene
4.46
❑
El❑
Concentration
Mass
(120-82-1)
Section 5.Organic Toxic Pollutants (GCIMS Fraction
—Pesticides)
5.1
Aldrin
❑
❑
❑
Concentration
(309-00-2)
Mass
5.2
a-BHC
El
❑
IZI
Concentration
(319-84-6)
Mass
5.3
Q-BHC
El
El
IZI
Concentration
(319-85-7)
Mass
5.4
y-BHC
El
❑
❑✓
Concentration
(58-89-9)
Mass
5.5
b-BHC
Concentration
Mass
(319-86-8)
5.6
Chlordane
❑
❑
❑
Concentration
Mass
(57-74-9)
5.7
4 4'-DDT
El
❑
IZI
Concentration
(50-29-3)
Mass
5.8
4 4'-DDE
❑
❑
✓
Concentration
Mass
(72-55-9)
5.9
4 4'-DDD
❑
❑
Concentration
(72-54-8)
Mass
5.10
Dieldrin
❑
❑
✓
❑
Concentration
(60-57-1)
Mass
L5.11
a-endosulfan
❑
❑
❑
Concentration
(115-29-7)
1 Mass
EPA Form 3510-2C (Revised 3-19) Page 19

EPA Identification Number I NPDES Permit Number Facility Name I I Outfall Number Form Approved 03/05/19
110006710577 NCO028037 Lexington WTP #1&#2 001 OMB No.2040-0004
TABLE B. TOXIC METALS, CYANIDE,
TOTAL PHENOLS,
AND ORGANIC
TOXIC
POLLUTANTS (40 CFR
122.21 (g)(7)(v))'
Effluent
Intake
(optional)
Pollutant/Parameter
(and CAS Number, if available)
Testing
Required
Presence or Absence
check one
Units
(specify)
Believed
Present
Believed
Absent
Maximum
Daily
Discharge
(required)
Maximum
Monthly
Discharge
(if available)
Long -Term
Average
Daily
Discharge
f available
Number
of
Analyses
Long -
Term
Average
Value
Number
of
Analyses
5.12
(i-endosulfan
(115-29-7)
El
El
El
Concentration
Mass
5.13
Endosulfan sulfate
(1031-07-8)
❑
El
El
Concentration
Mass
5.14
Endrin
(72-20-8)
❑
❑
❑
Concentration
Mass
5.15
Endrin aldehyde
(7421-93-4)
❑
❑
❑
Concentration
Mass
5.16
Heptachlor
(76-44-8)
❑
❑
❑
Concentration
Mass
5.17
Heptachlor epoxide
(1024-57-3)
❑
❑
❑
Concentration
Mass
5.18
PCB-1242
(53469-21-9)
❑
❑El
Concentration
Mass
5.19
PCB-1254
(11097-69-1)
❑
❑
✓❑
Concentration
Mass
5.20
PCB-1221
(11104-28-2)
❑
❑
Concentration
Mass
5.21
PCB-1232
(11141-16-5)
❑
❑
El
Concentration
Mass
5.22
PCB-1248
(12672-29-6)
❑
❑El
Concentration
Mass
5.23
PCB-1260
(11096-82-5)
❑
❑
El
Concentration
Mass
15.24
PCB-1016
(12674-11-2)
❑
❑
✓❑
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 20

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
11000671, NCO029037 I Lexington WTP #1&#2 001
Form Approved 03/05/19
OMB No. 2040-0004
Intake
Presence or Absence
check one
Effluent
(optional)
Pollutant/Parameter
(and CAS Number, if available)
Testing
Required
Believed
Believed
Units
(specify)
Maximum
Maximum
Long -Term
Average
Number
Long -
Number
Present
Absent
Daily
Monthly
Daily
of
Term
Average
of
Discharge
Discharge
Discharge
Analyses
Value
Analyses
(required)
(if available)
if available
Toxaphene
5.25
✓❑
Concentration
Mass
(8001-35-2)
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 3510-2C (Revised 3-19) Page 21

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110006710577 NCO028037 Lexington WTP #1&#2 OMB No. 2040-0004
Presence or Absence Intake
check one Effluent
(Optional)
Units
Pollutant Maximum Long -Term Lon Term
Believed Believed (specify) Maximum Daily Long-Term
Average Daily Number of Number of
Present Absent Discharge Average
Discharge Discharge Analyses Analyses
(required) if available if available)Value
❑ Check here if you believe all pollutants on Table C to be present in your discharge from the noted outfall. You need not complete the "Presence or Absence" column of Table C for
each pollutant.
❑ Check here if you believe all pollutants on Table C to be absent in your discharge from the noted outfall. You need not complete the 'Presence or Absence" column of Table C for
each pollutant.
1
Bromide
❑
❑
Concentration
(24959-67-9)
Mass
2
Chlorine, total
❑
❑
Concentration
ug/I
47
30
12
residual
Mass
3.
Color
❑
❑✓
Concentration
Mass
4.
Fecal coliform
Concentration
Mass
5
Fluoride
❑
❑
Concentration
(1698448-8)
Mass
6
Nitrate -nitrite
❑
Concentration
Mass
7'
Nitrogen, total
❑
❑
Concentration
organic (as N)
Mass
8.
Oil and grease
El
El
Concentration
Mass
9.
Phosphorus (as
El
❑
Concentration
ug/l
174
107
6
P), total (7723-14-0)
Mass
10.
Sulfate (as SO4)
❑
❑
Concentration
(14808-79-8)
Mass
' 11.
Sulfide (as S)
❑
❑✓
Concentration
Mass
EPA Form 3510-2C (Revised 3-19) Page 23

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110006710577 NC0028037 Lexington WTP #1&#2 OMB No. 2040-0004
• • • • • ••
1
Presence or Absence Intake
check one Effluent (Optional)
Pollutant Units Maximum Long -Term
Believed Believed (specify) Maximum Daily Long -Term
Monthly Average Daily Number of Number of
Present Absent Discharge Average
Discharge Discharge Analyses Analyses
(required)
if available if available Value
12
Sulfite (as S03)
❑
❑
Concentration
(14265-45-3)
Mass
13.
Surfactants
El
Mass
Mass
14.
Aluminum, total
✓❑
❑
Concentration
mg/I
.450
.345
6
(7429-90-5)
Mass
15.
Barium, total
❑
❑
Concentration
(744039-3)
Mass
16.
Boron total
❑
Concentration
(7440-42-8)
Mass
17.
Cobalt, total
❑
❑
Concentration
(7440-48-4)
Mass
18
Iron total
❑
❑
Concentration
(7439-8M)
Mass
19
Magnesium, total
❑
Concentration
mg/I
2.54
2.297
6
(7439-95-4)
Mass
Molybdenum,
Concentration
20.
total
❑
7439-98-7
Mass
21
Manganese, total
✓❑
❑
Concentration
ug/I
2140
715
6
(7439-96-5)
Mass
22
Tin total
❑
❑
Concentration
(744031-5)
Mass
L23.
Titanium, total
❑
✓
❑
Concentration
(744032-6)
Mass
EPA Form 3510-2C (Revised 3-19) Page 24

EPA Identification Number
NPDES Permit Number
Facility Name
Outfall Number
Form Approved 0
110006710577
NCO028O37
Lexington WTP #1&#2
-0004
OMB No. 2040-0004
Presence or Absence
Intake
check
one
Effluent
(Optional)
Pollutant
Believed
Believed
Units
(specify)
Maximum Daily
Maximum
Monthly
Long -Term
Average Daily Number of
Long -Term
Number of
Present
Absent
Discharge
Discharge
Discharge Analyses
Average
Analyses
(required)
if available
if available
Value
24. Radioactivity
Alpha, total
El
Concentration
Mass
Beta, total
❑
❑✓
Concentration
Mass
Radium, total
El
❑✓
Concentration
Mass
Radium 226, total
❑
❑✓
Concentration
Mass
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 3510-2C (Revised 3-19) Page 25

WTP Flow Process Flow Diagram
Floculatio
Sedimentation
emu.
Flash Mix
/Sludge
Finished Water Storage & Pumping removal
Decant Ponds
Back Wash
Waste
Pond Abbotts Creek
Effluent
Filtration
Sludge Drying Beds

DocuSign Envelope ID: BOCDA8CA-33BF-4DFD-B36D-99B7046233FA
WTI
w
s
s t. C
ir ZN
� �r�� �V� ' a.�•C-�� mil` � 4�\ � �'� t',,,�`� ' �
w '&
�kNa ioa1 C. ographiC So rel
City of Lexington
Lexington WTP #1 & #2
NPDES Permit NCO028037
Receiving Stream: Abbotts Creek Stream Class: WS-III; CA
Stream Segment: 12-119-(4.5) Sub -Basin #: 03-07-07
River Basin: Yadkin Pee -Dee HUC: 030401030206
County: Davidson
N
A
SCALE
1:24,000
Facility Location
Quad:scale not shown
USGS
35.85472, -80.197780