NC0074772_Renewal (Application)_20241007

ROY COOPER
Governor
MARY PENNY KELLEY
sm. rfary
RICHARD E. ROGE2S, JR.
Dfre W
Wesley Bishop
Aqua North Carolina Inc
202 Mackenan Ct
Cary, NC 27511
Subject: Permit Renewal
Application No. NCO074772
Diamond Head WWTP
Iredell County
Dear Applicant:
NORTH CAROLINA
Environmental Quality
October 07, 2024
The Water Quality Permitting Section acknowledges the October 7, 2024 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://www.deg.nc.gov/permits-rules/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.
Sincerely,
Cynthia DD.emery
Administrative Assistant
Water Quality Permitting Section
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AQUA.
.6 Essential
October 2, 2024
Division of Water Resources
Water Quality Permitting Section - NPDES
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Re: Application for Permit Renewal
Aqua North Carolina, Inc.
Diamond Head WWTP
NPDES No. NCO074772
Iredell County
To Whom It May Concern:
RECEIVED
OCT 07 2024
NCDEQ/DWR/NPDES
Enclosed are three (3) copies of the completed application Form 2A and necessary
attachments for your office to renew the subject permit.
Should you need any additional information or assistance, please feel free to contact me via
phone at [phone] or by email at [e-mail].
Sincerely, o�A
`�✓ v
Brent Milliron
Environmental Compliance Director
Aqua North Carolina, Inc.
Enc: NPDES Application, Form 2A w/ attachments
Diamond Head NC0074772 NPDES Permit
Cc: Shannon Becker, President, Aqua North Carolina
Lori Lester, Environmental Compliance Specialist 1
202 MacKenan Court, Cary, NC, 27511 • 919.467.8712 0 AquaAmerica.com

NPDES Permit Number
Facility Name
Modified! Appficabon Form 2A
NC0074772
Diamond Head WWrP
Modified Mardi 2021
Form
NC Department of Environmental Quality - Application for NPDES Permit to Discharge Wastewater
MINOR SEWAGE FACILITIES (Before completing this form, please read the instructions. Failure to follow
NPDES
the instructions mav result in denial of the a Iication.
SECTIONe
INFORMATION e- .i
Facility name
1.1
Diamond Head WWTP
Mailing address (street or P.O. box) O C T 07 2024
799 Williamson Road
City or town
State
ZIP code
o
Mooresville
NC NCD
s
Contact name (first and last)
Title
Phone number
Email address
Brent Milliron
Envir. Compliance Director
[phone]
[e-mail]
c
Location address (street, route number, or other specific identifier) ❑ Same as mailing address
u
n
LL
City or town
State
ZIP code
1.2
Is this application for a facility that has yet to commence discharge?
❑ Yes 4 See instructions on data submission ✓❑ No
requirements for new dischargers.
1.3
Is applicant different from entity listed under Item 1.1 above?
❑r Yes ❑ No 4 SKIP to Item 1.4.
Applicant name
Aqua North Carolina
Applicant address (street or P.O. box)
202 MacKenan Court
E
City or town
State
ZIP code
Cary
NC
27511
Contact name (first and last)
Title
Phone number
Email address
aBrent
Milliron
Envir. Compliance Director
[phone]
[e-mail]
1.4
Is the applicant the facility's owner, operator, or both? (Check only one response.)
❑ Owner ❑ Operator ✓❑ Both
1.5
To which entity should the NPDES permitting authority send correspondence? (Check only one response.)
❑ Facility 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.
€
Existtng Environniantal Pwmtts
a
❑r NPDES (discharges to surface
❑ RCRA (hazardous waste)
❑ UIC (underground injection
water)
control)
E
NCO074772
Q
❑ PSD (air emissions)
❑ Nonattainment program (CAA)
❑ NESHAPs (CAA)
c
W
rn
—�`�
❑ Ocean dumping (MPRSA)
❑ Dredge or fill (CWA Section
❑ Other (specify)
Page 1

NPDES Permit Number
Facility Name
Modified Application Form 2A
NCO074772
Diamond Head WWTP
I
Modfied March 2021
1.7
Provide the collections stem information requested below for the treatment works.
Municipality
Population
Collection System Type
Ownership Status
Served
Served
indicate percenlegal)
Mooresville, NC
364i142
100 % separate sanitary sewer
EI Own ❑ Maintain
Residential
_ %combined storm and sanitary sewer
❑ Own ❑ Maintain
m
❑ Unknown
❑ Own ❑ Maintain
c
+ 14 Commercial
% separate sanitary sewer
❑ Own ❑ Maintain
% combined storm and sanitary sewer
❑ Own ❑ Maintain
Connections
❑ Unknown
❑ Own ❑ Maintain
0
%separate sanitary sewer
❑ Own ❑ Maintain
v
% combined storm and sanitary sewer
❑ Own ❑ Maintain
❑ Unknown
❑ Own ❑ Maintain
m
% separate sanitary sewer ❑ Own ❑ Maintain
i.
%combined storm and sanitary sewer ❑ Own ❑ Maintain
0
❑ Unknown ❑ Own ❑ Maintain
Total
364 + 1a
°i
Population
Commercial
ti
Served
Combined Storm and
Separate Sanitary Sewer System Sanitary Sewer
Total percentage of each type of
100 %
° �
'
sewer line in miles
1.8
Is the treatment works located in Indian Country?
0
❑ Yes No
a)
1.9
Does the facility discharge to a receiving water that flows through Indian Country?
❑ Yes ❑✓ No
1.10
Provide design and actual flow rates in the designated spaces.
Design Flow Rate
0.0731 mgd
Annual Average Flow Rates Actual
a
Two Years Ago
Last Year
This Year
ry ;
0.041 mgd
0.D44 mgd
0.041 mgd
c o
rn�
Maximum Daily Flow Rita(Actual)
Two Years Ago
Last Year
This Year
0.076 mgd
0.073 mgd
0.090 mgd
h
1.11
Provide the total number of effluent discharge points to waters of the State of North Carolina b
Total Number of Effluent Discharge olnbbyType
F
Combined Sewer
Constructed
E
Treated Effluent
Untreated Effluent
Overflows
Bypasses
a
Overflows
u
N_
c
1
Page 2

NPDES Pemdt Number
Facility Name
Modified Applicafion Farm 2A
NCD074772
Diamond Head WWTP
Modified March 2021
Oulfalls Other Than to Waters of the Stele of North Cardin
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 State of North Carolina?
❑ Yes ❑✓ No 4 SKIP to Item 1.14.
1 113
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
❑ Intermittent
❑ Continuous
gpd
❑ Intermittent
❑ Confinuous
gpd
v,
❑ Intermittent
v
1.14
Is wastewater applied to land?
❑ Yes ❑✓ No 4 SKIP to Item 1.16.
1.15
Provide the land application site and dischar a data requested below.
g
Land Application Site and Discharge Data
c
Continuous or
5
Location
San
Average Daily Volume
Intermittent
Applied
check one
r
saes
gpd
❑ Continuous
a
❑ Intermittent
c
❑ Continuous
m
acres
gpd
❑ Intermittent
v
saes
9Pd
❑ Continuous
S
❑ Intermittent
e
1.16
Is effluent transported to another facility for treatment prior to discharge?
❑ Yes 0 No 4 SKIP to Item 1.21.
0
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.
Trans Data
Entity name
Mailing address (street or P.O. box)
City or town
State
ZIP code
Contact name (first and last)
Tille
Phone number
Email address
Page 3

NPDES Permit Number
Fadlity Name
Modified Application Fonn 2A
NCO074772
Diamond Head W WTP
Modified March 2021
1.20
In the table below, indicate the name, address, contact information, NPDES number, and average daily Flow rate of the
receiving facility.
Receiving F
lifty Data
Facility name
Mailing address (street or P.O. box)
City or town
State
ZIP code
Contact name (first and last)
Title
Phone number
Email address
NPDES number of receiving facility (if any) ❑ None
Average daily flow rate mgd
1.21
Is the wastewater disposed of in a manner other than those already mentioned in Items 1.14 through 1.21 that do
not have outlets to waters of the State of North Carolina (e.g., underground percolation, underground injection)?
❑ Yes ❑✓ No 4 SKIP to Item 1.23.
0
1.22
Provide information in the table below on these other disposal methods.
Information on Other lD posalMethods
Disposal
Location of
Size of
Annual Average
Continuous or Intermittent
v
Method
Disposal Site
Disposal Site
Daily Discharge
check one
( )
a
Description
Volume
❑ Continuous
acres
gpd!
❑ Intermittent
C
acres
❑ Continuous
gpd
❑ Intermittent
acres
gpd
❑ Continuous
❑ 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.
Consult with your NPDES permitting authority o determine what information needs to be submitted and when.
OttW
❑ Discharges into marine waters (CWA 0 Water quality related effluent limitation (CWA Section
Section 301 (h)) 302(b)(2))
❑ Not applicable
1.24
Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works
the responsibility of a contractor?
❑ Yes ❑✓ No +SKIP to Section 2.
1.25
Provide location and contact information for each contractor in addition to a description of the contractors operational
and maintenance responsibilities.
Contractor Information
Contractor 1
Contractor 2
Contractor 3
o
Contractor name
A
(company name
€
Mailing address
`c
street or P.O. box
o
City, state, and ZIP
A
code
Contact name (first and
k.i
last
Phone number
Email address
Operational and
maintenance
responsibilities of
contractor
Page 4

NPDES Permit Number Facility Name Modified Application Form 2A
NCO074772 Diamond Head WWTP Modified March 2021
SECTION ADDITIONAL INFORMATION
o Ordfatls to waters of the State of North Carolina
2.1
Does the treatment works have a design flow greater than or equal to 0.1 ri
w
o
❑✓ Yes ❑ No 4 SKIP to Section 3.
`
2.2
Provide the treatment works' current average daily volume of inflow
Average Dalty Volume of Inflow and Infiltration
gpd
0
0
and infiltration.
Indicate the steps the facility is taking to minimize inflow and infiltration.
v
e
w
t
2.3
Have you attached a topographic map to this application that contains all the required information? (See instructions for
a
specific requirements.)
TA
O
Yes ❑ No
r
E
2A
Have you attached a process flow diagram or schematic to this application that contains all the required information?
c W
(See instructions for specific requirements.)
r` c
❑✓ Yes ❑ No
2.5
Are improvements to the facility scheduled?
❑ Yes No SKIP to Section 3.
Briefly list and describe the scheduled improvements.
0
1.
c
E
E
c
2.
E
0
d
3.
a
a
rn
4.
a
A
2.6
Provide scheduled or actual dates of completion for improvements.
Scheduled or Actual Dates of Com letion for Improvements
E
Scheduled
Affected
OutfalIist ls
Begin
End
Begin
Attainment of
Operational
'o
Improvement
(n
Construction
Construction
DischargeLev
el
E
(from above)
mbeall
(MMIDDMlY
(MMIDDIYYI 1�
(MMIDDIYYI 1)
MMIDD
v
1.
d
t
�
2.
3.
4.
2.7
Have appropriate permitstclearances concerning other federal/state requirements been obtained? Briefly explain your
response.
❑ Yes ❑ No ❑ None required or applicable
Explanation:
Page 5

NPDES Perme Hurter Fadlity Name Modified ApplipUon Fonn 2A
NC0074772 Diamond Head WWTP Modified Mach 2021
SECTION•' • ON 1 r
3.1 Provide the following information for each outfall. (Attach additional sheets if you have more than three outfalls.)
Outfall Number W1
Outfall Number _
Outfall Number
State
NC
m
County
Iredell
x
0
`o
City or town
Mooresville
Distance him shore
1056 ft.
n
H
Depth below surface
20
d
0
Average daily flow rate
0.041 mgd
mgd
mgd
Latitude
35' 33' 52" N
Longitude
W 5i 58" w
"
3.2
Do any of the outfalls described under Item 3.1 have seasonal or periodic discharges?
o
❑ Yes ✓❑ No -* SKIP to Item 3.4.
m
m
3.3
If so, provide the following information for each applicable ouffall.
L
Outfall Number
OutfallNumber_
Outfall Number
0
a
Number of times per year
0
c
discharge occurs
a
Average duration of each
o
discharge (specify units
c
Average flow of each
mgd
mgd
mgd
N
discharge
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 ti pe at each applicable outfall.
OuQag Number 001
Outfall Number_
Outfall Number
0
Does the treatment works discharge or plan to discharge wastewater to waters of the State of North Carolina from
vi
E
3.6
one or more discharge points?
•
❑✓ Yes ❑ No +SKIP to Section 6.
Page 6

NPDES Permit Number
Facility Name
Modified Application Form 2A
NCO074772
Diamond Head WWTP
Modified March 2021
3.7
Provide the receiving water and related information if known for each outfall.
Outfall Number 001
Outfall Number_
Outfall Number_
Receiving water name
Lake Norman (Reeds Creek)
Name of watershed, river,
Catawba River
e
or stream system
TL
U.S. Soil Conservation
c
i
Service l4-digitwatershed
in
code
Name of state
Catawba
3
managementlriverbasin
U.S. Geological Survey
8-digit hydrologic
cataloqlnq unit code
Critical low flow (acute)
cis
die
cfs
Critical low flow (chronic)
cfs
cfs
cis
Total hardness at critical
mglL of
mglL of
mglL of
low flow
CaCO3
CaCO3
CaCO3
3.8
Provide the following information describing the treatment provided for discharges from each outlall.
Outtall Number _
Outfall Number
Outfall Number
Highest Level of
❑ Primary
❑ Primary
❑ Primary
Treatment (check all that
❑ Equivalent to
❑ Equivalent to
❑ Equivalent to
apply per outfall)
secondary
secondary
secondary
0 Secondary
❑ Secondary
❑ Secondary
❑ Advanced
❑ Advanced
❑ Advanced
❑ Other (specify)
❑ Other (specify)
❑ Other (specify)
c
Design Removal Rates by
Outfall
m
m
BOD5 or CBOD5
85 %
%
%
c
m
TSS
as %
%
%
• Not applicable
❑ Not applicable
❑ Not applicable
Phosphorus
%
%
%
• Not applicable
❑ Not applicable
❑ Not applicable
Nitrogen
%
%
%
Other (specify)
❑ Not applicable
❑ Not applicable
❑ Not applicable
%
%
%
Page 7

NPOES Permit Number
Facility Name ModMed Applkauun ram e
Diamond Head WWTP Modified March 2021
NCO074772
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.
v
m
c
.c
0
Oultall Number 001
Outfall Number _
Outfall Number
0
n
Disinfection type
Tablet Chlorination w/contact
m
d
tank
Seasons used
All
c
d
E
d
Dechlorination used?
❑ Not applicable
❑ Not applicable
❑ Not applicable
~
Yes
❑ Yes
❑ Yes
❑ No I
❑ No
❑ No
3.1 o
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 facilitys
discharges or on any receiving water near the discharge points?
❑✓ Yes ❑ No 4 SKIP to Item 3.13.
3.12
Indicate the number of acute and chronic WET tests conducted since the last permit relssuance of the facility's
discharges by otltfall number or of the receiv n water near the discha a oink.
Outfall Number 001
OWall Number_
Outfall Number_
Acute
Chronic
Acute
Chronic
Acute
Chronic
e
Number of tests of discharge
17
g
water
F
Number of tesff—M—ecenAng
0
water
e
E
W
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?
✓❑ Yes 4 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
package?
❑✓ Yes ❑ No
Have you completed monitoring for all applicable Table D pollutants required by your NPDES permitting authority and
3.18
attached the results to this application package?
No additional sampling required by NPDES
Elermittin
❑ Yes a ri .
Page 8

NPDES Penn Number
Facility Name
Modified Application Form 2A
NCO074772
Diamond Head W WTP
Modified March 2021
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?
No 4 Complete tests and Table E and SKIP to
❑✓ Yes ❑
Item 3.26.
3.20
Have you previously submitted the results of the above tests to your NPDES permitting authority?
No 4 Provide results in Table E and SKIP to
El Yes ❑
Item 3.26.
3.21
Indicate the dates the data were submitted to our NPDES permitting authority and provide a summary of the results.
Date(s) Submitted
Summary of Results
MIDD
SO/12/2023=Passed
01/25/2024=Passed
'$
07/25/2024
04/18/2024=Passed
c
07/25/2024=Passed
c
0
V
3.22
Regardless of how you provided your WET testing data to the NPDES permitting authority, did any of the tests result in
o
toxicity?
c
❑ Yes ❑✓ No 4 SKIP to Item 3.26.
3.23
Describe the cause(s) of the toxicity:
e
m
Fj
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 Z Not applicable because previously submitted
information to the NPDES permitting authority.
Page 9

NPDES Permit Number Facility Name Modieed APpucanon -on z
NCO074772 Diamond Head W W7P Modified March 2021
SECTION
6. CHECKLIST
1
In Column 1 below, mark the sections of Form 2A that you have completed and are submitting with your application. For
6.1
each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note that not
all applicants are re wired to provide attachments.
Column 7
Column 2
O Section 1: Basic Application
❑ w/ variance request(s) ❑ w/ additional attachments
Information for All Applicants
Section 2: Additional
0 w/ topographic map 0 w/ process flow diagram
❑ Information
❑ wl additional attachments
© w/ Table A ❑ w/ Table D
❑ Section 3: Information on
© w/ Table B ❑ w/ additional attachments
Effluent Discharges
e
❑ w/ Table C
Section 4: Not Applicable
0
¢t'
Section 5: Not Applicable
O Section 6: Checklist and
❑ w/ attachments
o
Certification Statement
x
1
6.2
Certification Statement
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
U
accordance with a system designed to assure that qualified personnel property 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 lastname
as e
Brent Milliron
Envir. Compliance Director
Signature
Date signed
,A /
A,fM /J /
10/02/2024
W- _JIDWRINPDLS
Page 10

sell: rRril
NCO074772 I Diamond Head WWTP 001
Modified Applicaton Form 2A
ModiSed March 2021
• •a
Maximum Daily Discharge
Average Daily Discharge
Analytical ML or MDL
Method+ include units
( )
Pollutant
Value
Units
Value
Unite
Number of
Samples___
Biochemical oxygen demand
0 BOD5 Or o CBOD5
(report one
20.5
mg/L
0.95
mg/L
160
OML
SM52108 2.0 0 MDL
Fecal coliform
300.0
p/IOOml
29.33
k/100ml
162
SM9222D (MP) 1.0 NIL
0 MDL
Design flow rate
pH (minimum)
pH (maximum)
Temperature (winter)
0.090
6.5
9.3
18
gallons
units
units
degrees Celsius
0.041
13.37
gallons
degrees Celsius
1120
70
Temperature (summer)
28.0
degrees Celsius
22.92
degrees Celsius
104
SM25400 2.5 11 MDL
Total suspended solids (TSS)
29
mg/L
1.9
mg/L
160
'Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 4u grit tsti for the analysis or poiiumms or ponutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
z
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o
n
a m
�
Z
O
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M
o
0
U)
Page 11

DES Permit Number Fadli Name Ouffall Number Modified Application Form 2A
NC0074772 Diamond ead WWTP 001 Modified March 2021
Average Daily Discharge
Analytical
ML or MDL
Maximum Daily Discharge
Value
Units
V
lue
Units
Number of
Pollutant
McModl
include unbs
Samples
Ammonia (as N)
3.66
mg/L
021
mg/L
160
SM4500NH30
0.2 ML
Z MDL
Chlorine
45
ug/L
841
ug/L
320
Field -Hach DOD
11 ML
❑ MDL
total residual, TRC
Dissolved Oxygen
12.6
mg/L
911
mg/L
160
Field -Hach DOD
13 ML
❑ MDL
Nitratelnitdte
49.30
mall
3
.75
mg/L
12
HACH 10206
0.3 mg/L El ML
O MDL
Kleldahl nitrogen
9.2
mg/L
27
mg/L
12
HACH 10242, Rev 1.
1.0 mg/L F) MDL
❑ ML
Oil and grease
mg/L
mg/L
❑ MDL
PE3
hosphorus
6.26
mg/L
99
mg/L
13
SM450OPE-2022
ML
0.16 mall O MDL
Total dissolved solids
828
mg/L
5
.17
mg/L
36
SM 2540C
10 mg/L 0 ML
❑ MDL
' Sampling shall be conducted according to sufficiently sensitive lest procedures (i.e., r
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122
2 Facilities that do not use chlorine for disinfection, do not use chlorine elsewhere in the
required to report data for chlorine.
approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
process, and have no reasonable potential to discharge chlorine in their effluent are not
EPA Form 3510-ZA (Revised 3-19) 1 Page 12

umifi Annli, fim Form 7A
EPA Identification Number
Nrutb vermn number ruumr nm,c �••.� •••• ••--•
---- - r.--- -- - ---
Modified March 2021
NC0074772 Diamond Head WWTP 001
•• r
Maximum Daily Discharge Average Daily Discharge
Analytical ML or MDL
Pollutant
Nu mber of
Method (include units)
Value Units Value Units
Sam les
Metals, Cyanide, and Total Phenols
Hardness (as CaCO3)
194
mg/L as CaCO3
156.08
mg/L as CaCO3
13
SM 2340C-2021
5.0 mg/L 0 ML
❑ MDL
❑ ML
Antimony, total recoverable
❑ MDL
❑ ML
Arsenic, total recoverable
❑ MDL
❑ ML
Beryllium, total recoverable
❑ MDL
❑ ML
Cadmium, total recoverable
❑ MOL
❑ ML
Chromium, total recoverable
❑ MDL
Copper, total recoverable
0.02
mg/L
0.01
mg/L
13
EPA 200.7
2.0 ug/L 0 ML
MDL
❑ ML
Lead, total recoverable
❑ MDL
❑ ML
Mercury, total recoverable
❑ MDL
❑ ML
Nickel, total recoverable
❑ MDL
❑ ML
Selenium, total recoverable
❑ MDL
❑ ML
Silver, total recoverable
❑ MDL
❑ ML
Thallium, total recoverable
❑ MDL
ML
10 ug/L
Zinc, total recoverable
0.15
mg/L
0.09
mg/L
13
EPA 200.7
l MDL
❑ ML
Cyanide
❑ MDL
❑ ML
Total phenolic compounds
❑ MDL
Yolatlle Organic Compounds
❑ ML
Acrolein
❑ MDL
❑ ML
Acrylonilrile
❑ MDL
❑ ML
Benzene
❑ MDL
❑ ML
Bromoform
❑ MDL
EPA Form 3510-2A (Revised 3-19) Page 13

EPA Identlfiatlon Number NPDES Permit Number Fad l
Neme Oudall Number
Modified Appiipbon Form 2A
NCO074772 Diamond
ead WWTP 001
Modified March 2021
Maximum Daily Discharge
Average Daily Discharge
Analytical ML or MDL
Pollutant
Method' (include units)
Number of
Value Units
alue
Units
Sam les
❑ ML
Carbon tetrachloride
❑ MDL
❑ ML
Chlorobenzene
❑ MDL
❑ ML
Chlorodibromomethane
❑ MDL
❑ ML
Chloroethane
❑ MDL
❑ ML
2chloroethylvinyl ether
❑ MDL
❑ ML
Chloroform
❑ MDL
❑ ML
Dichlorobromomethane
❑ MDL
O ML
1,1dichloroethane
❑ MDL
❑ ML
1,2dichloroethane
❑ MDL
❑ ML
trans-1,2dlchloroethylene
❑ MDL
❑ ML
1,1dichloroethylene
❑ MDL
❑ la
1,2dichloropropane
❑ MDL
❑ ML
1,3-dichloropropylene
❑ MDL
❑ ML
Ethylbenzene
❑ MDL
❑ ML
Methyl bromide
❑ MDL
❑ ML
Methyl chloride
❑ MDL
❑ ML
Methylene chloride
❑ MDL
❑ ML
1,1,2,2-tebachloroethane
❑ MDL
❑ ML
Tetrachloroethylene
❑ MDL
❑ ML
Toluene
❑ MDL
❑ ML
1,1,1-trichloroethane
❑ MDL
❑ ML
1,1,2-trichloroethane
❑ MDL
EPA Form 3510.2A (Revised 3-19) 1 Page 14

EPA Identification Number NPDES Permit Number Facility Name Oudall Number
Modified Application Form 2A
NCO074772 Diamond Head WWTP 001
Modified March 2021
Maximum Daily Discharge Average Daily Discharge
Analytical ML or MDL
Pollutant of
Method' (include units)
Value Units Value Units samples
Sam es
❑ ML
Trichlorcethylene
❑ MDL
❑ ML
Vinyl chloride
❑ MDL
Acid -Extractable Compounds
❑ ML
p-chloro-m-cresol
❑ MDL
O ML
2-chlorophenol
❑ MDL
❑ ML
2,4-dichlorophenol
❑ MDL
❑ ML
2,4-dimethylphenol
❑ MDL
❑ ML
4,6-dinitro-o-cresol
❑ MDL
❑ ML
2,4-dinilrophenol
❑ MDL
❑ ML
2-nitrophenol
❑ MDL
❑ ML
4-nitrophenol
❑ MDL
❑ ML
Pentachlorophenol
❑ MDL
❑ ML
Phenol
❑ MDL
❑ ML
2,4,6-tdchlorophenol
❑ MDL
Bae•Nsutral Compounds
❑ ML
Acenaphthene
❑ MDL
❑ ML
Acenaphthylene
❑ MDL
❑ ML
Anthracene
❑ MDL
❑ ML
Benzidine
❑ MDL
❑ ML
Benzo(a)anthracene
❑ MDL
❑ ML
Benzo(a)pyrene
❑ MDL
❑ ML
3,4-benzofluoranthene
❑ MDL
EPA Form 3510-2A (Revised 3-19) Page 15

EPA Identification Number
NPDES Permit Number Faclij
Name Outfall Number
Modified Application Form 2A
Modified March 2021
NCO074772 Diamond
ad WWTP 001
Maximum Daily Discharge
Average Daily Discharge
Analytical ML or MDL
Pollutant
Method' (include units)
Number of
value Units V
lue
Units
Sam les
❑ ML
Benzo(ghi)perylene
❑ MDL
❑ ML
Benzo(k)6uoranthene
❑ MDL
❑ ML
Bis (2-chloroethoxy) methane
❑ MDL
❑ ML
Bis (2-chlomethyl) ether
1
❑ MDL
❑ ML
Bis (2-chloroisopropyl) ether
❑ MDL
❑ ML
Bis (2-ethylhexyl) phthalate
❑ MDL
❑ ML
4-bromophenyl phenyl ether
Cl MDL
❑ ML
Butyl benzyl phthalate
❑ MDL
❑ ML
2-chloronaphthalene
❑ MDL
❑ ML
4-chlorophenyl phenyl ether
❑ MDL
❑ ML
Chrysene
❑ MDL
❑ ML
di-n-butyl phthalate
❑ MDL
❑ ML
di-n-octyl phthalate
❑ MDL
❑ ML
Dibenzo(a,h)anthracene
❑ MDL
O ML
1,2-dichlorobenzene
❑ MDL
❑ ML
1,3-dichlorobenzens
❑ MDL
❑ ML
1,4-dichlorobenzene
❑ MDL
❑ ML
3,3ichlorobenzidine
❑ MDL
❑ ML
Detyl phthalate
❑ MDL
❑ ML
Dimethyl phthalate
❑ MD
❑ ML
ttolu2,ron
❑ MOIL
❑ ML
❑MDL
EPA Form 3510.2A (Revised 3-19) 1 Page 16

EPA Idwirfirabon Number
NPDES Permit Number Facility Name Outiall Number
moamea nppncamn ronn r
N00074772 Diamond Head W WTP 001
Modified March 2021
• r
Maximum Daily Discharge Average Daily Discharge
Analytical ML or MDL
Pollutant
Number of
Method' (include units)
Value Units Value Units
Samples
❑ MIL
1,2-diphenylhydrazine
❑ MDL
❑ ML
Fluoranthene
❑ MDL
❑ MIL
Fluorene
❑ MDL
❑ MIL
Hexachlorobenzene
❑ MDL
❑ MIL
Hexachlorobutadiene
❑ MDL
0 ML
Hexachlorocyclo-pentadiene
❑ MDL
❑ ML
Hexachloroethane
❑ MDL
❑ MIL
Indeno(1,2,3-cd)pyrene
❑ MDL
❑ MIL
Isophorone
❑ MDL
❑ MIL
Naphthalene
❑ MDL
❑ MIL
Nitrobenzene
❑ MDL
❑ ML
N-nitrosodi-n-propylamine
❑ MDL
❑ ML
N-nitrosodimethylamine
❑ MDL
❑ MIL
N-nitrosodiphenylamine
❑ MDL
❑ ML
Phenanthrene
❑ MDL
❑ MIL
Pyrene
❑ MDL
0 MIL
1,2,4-trichlorobenzene
❑ MDL
t 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 17

NPDES Permit Number Faci
Name Outiall Number
Modified Appimboo Form 2A
Diamond
ead WWTP 001
Modified March 2021
NCO074772
r •r� a •• rl r: •r
•.
Avers a Dall Dlscha a
AnalyUeal ML or MDL
Maximum Dail Discharge
Value
Units VBlue
Units
Number of
Pollutant
(list)
Mathodt (include units)
Sam lea
❑ No additional sampling is required by NPDES permitting authority.
Adjusted Gross Alpha EmittersP16.00
pCi/L
.47
pCi/L
13
EPA 900.0
3 pCi/L 21MOL
Gross Beta Emitters.50
pCi/L
1
.27
pCi/L
13
EPA 900.0
ML
4 pCi/L 0 MDL
Combined Radium 226 & 22859
pCi/L
.52
pCi/L
13
EPA 904.0
0 ML
1.0 pCi/L O MDL❑
ML
Strontium
88
pCi/L
.12
pCi/L
13
EPA 905
3.0 pCi/L p. MDL
Tritium
225
pCi/L
51.19
pCi/L
13
EPA 906.0
500 pCi/L 0 ML
El MDL
Uranium
37.6
ug/L
.44
ug/L
13
EPA 200.8
1 ug/L O MDL
Chloride
112.0
mg/L
7
L04
mg/L
13
SM 4500CI B
0.5 mg/L 0 ML
❑ MDL
Conductivity
968
umhos/cm
713.73
umhos/cm
37
SM251OB-2021
15 umhos/ Z ML
O MDL
Fluoride
0.59
mg/L
.42
mg/L
13
SM 4500FC
E ML
0.1 mg/L O MDL
Salinity
1.780
ppt
37
S2520 B-2011
ML
0.04 ppt 11 MDL
❑ ML
❑ MDL
❑ ML
❑ MDL
❑ ML
❑ MDL
❑ ML
❑ MDL
❑ ML
❑ MDL
❑ ML
❑ MDL
❑ ML
❑ MDL
..
• • _ _ _.
__ � _�__ •n /��I� I7C
L� l I....:.. n! nnll.
Ann.n nr nnll••Innl nnromnlCM
IM �MIIIM/t
1 Sampling shall be conducted according to sufficiently sensitive test procedures p.e., me uus) appruvcu under w v— —... III...... ... ..........
under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
Page 18

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Williamson Road ,
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AQUA North Carolina
Diamond Head Subdivision WWTP
Receiving Stream: lake Nonman [Reeds Creek Branch]
Stream Segment 11-(75) Stream Class: WS-N; B; CA
Slate Grid/Ound: El5SE/Mooresviae, NC River Basin: Catawba River
Sub -Basin: 03-08-32 HUC: 03050101
Facility ``
Location
not to scale - -
NorthNPDESPermitNCO074772
lredell County

Raw Effluent and
Trucked -in Filter Diamond Head WWTP
Backwash NCO074772
Process Flow Diagram
Bar Screen
Equalization Aeration Tertiary
Tank Basin Clarifier Filters
1 Chlorine Contact
Sludge Holding
Tank'
Dechlorination
Pumped
and
Hauled
Aeration
Outfa 11001