NC0074900_Renewal (Application)_20241007

ROY COOPER
Governor
MARY PENNY KELLEY
,l'm'elary
RICHARD E. ROGERS, JR.
Dire~
Wesley Bishop
Aqua North Carolina Inc
202 Mackenan Ct
Cary, NC 27511
Subject: Permit Renewal
Application No. NCO074900
Highway 150 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.
ec: WQPS Laserfiche File w/application
Sinnncer��ely, ""'—b
Cynthia Demery
Administrative Assistant
Water Quality Permitting Section
y Nmth GmMa Depart MdEmVammtalQwltty l Dlvlsbnof Wesm Resources
•/ Maaresvllk Reo.] Oft, Cmter Ave-, Sake 301 1 Moorts . North C a.2816

NPDES Permit Number Facility Name Modified Application Form 2A
NC0074900 Hwy 150 Riverpark WV✓rP Modified March 2021
NC Department of Environmental Quality - Application for NPDES Permit to Discharge Wastewater
Form
MINOR SEWAGE FACILITIES (Before completing this form, plea ail
NPDES
the instructions mav result in denial of the a icetbn.
SECTION•N
INFORMATION FOR.
Facility name
1.1
Hwy 150 Riverpark WWTP
Mailing address (street or P.O. box)
130 Quiet Cove Road
City or town
Slate
Mooresville
NC
28117
€
Contact name (first and last)
Title
Phone number
Email address
w
Brent Milliron
Envir. Compliance Director
[phone]
[e-mail]
c
Location address (street, route number, or other specific identifier) ❑ Same as mailing address
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 Rem 1.1 above?
❑✓ Yes ❑ No 4 SKIP to Item 1.4.
Applicant name
Aqua North Carolina
Applicant address (street or P.O. box)
w
202 MacKenan Court
E
City or town
State
ZIP code
0
Cary
NC
27511
Contact name (first and last)
Title
Phone number
Email address
n
a
Brent Milliron
Envir. Compliance Director
[phone]
[e-mail]
a
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.)
and applicant
❑ Facility ❑O Applicant El (they
(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
2
number for each.
€
Existing Environmental PermRs
✓❑ NPDES (discharges to surface
❑ RCRA (hazardous waste)
❑ UIC (underground injection
water)
cent)
E
NC0074900
0
❑ PSD (air emissions)
❑ Nonattainment program (CAA)
❑ NESHAPs (CAA)
w
rn
❑ Ocean dumping (MPRSA)
❑ Dredge or fill (CWA Section
❑ Other (specify)
w
Page 1

NPDES Permit Number
Facility Name
Modified Application Form 2A
NCO074900
Hwy 150 Riverpark V4WTP
Modified March 2021
1.7
Provide the collections stem information requested below for the treatment works.
Munidpality
Population
Collection System Type
Ownership Status
Served
Served
indicate rcenta
Mooresville, NC
35 Commercial
100 %separate sanitary sewer
El Own ❑ Maintain
and Residential
%combined storm and sanitary sewer
❑ Own ❑ Maintain
d
❑ Unknown
❑ Own ❑ Maintain
% separate sanitary sewer
❑ Own ❑ Maintain
% combined stone and sanitary sewer
❑ Own ❑ Maintain
❑ Unknown
❑ Own ❑ Maintain
a%
separate sanitary sewer
❑ Own ❑ Maintain
% combined storm and sanitary sewer
❑ Own ❑ Maintain
1O
❑ Unknown
[3 Own ❑ Maintain
m%
separate sanitary sewer ❑ Own ❑ Maintain
n%
combined storm and sanitary sewer ❑ Own ❑ Maintain
❑ Unknown ❑Own ❑ Maintain
Total 35 Commercial
0
Population and Residential
0
0
Served
Separate Sanitary Sewer System Combined Storm and
Bonita Sewer
Total percentage of each type of
100 % %
sewer line in miles
1.8
Is the treatment works located in Indian Country?
o
❑ Yes El No
ca
w
1.9
Does the facility discharge to a receiving water that flows through Indian Country?
e
❑ Yes E] No
1.10
Provide design and actual Bow rates in the designated spaces.
Design Flow Rate
o.lomd
Annual Average Flow Rates Actua
Two Years Ago
Last Year
This Year
a
0.035 mgd
o.oae mgd
o.oa7 mgd
LL
d
Maximum Daily Flow Rates Actual
Two Years Ago
Last Year
This Year
0.050 mgd
0.092 mgd
0.098 mgd
1.11
Provide the total number of effluent discharge points to waters of the State of North Carolina by type.
Total Number of Effluent Discharge Points by Type
o F
Combined Sewer
Constructed
Treated Effluent
Untreated Effluent
Bypasses
Emergency
z
Overflows
Overflows
y
Page 2

NPOES Permit Number
Facility Name
Modified Application Form 2A
NCO074900
Hwy 150 Riverpark W WTP
Modified March 2021
Outfalls Other Than to Waters of the State of North Carolina
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 + 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 Discharue
Data
Average Daily Volume
Continuous or Intermittent
Location
Discharged to Surface
(check one)
Impoundment
❑ Continuous
gpd
❑ intermittent
❑ Continuous
gpd
❑ Intermittent
gpd
❑ Continuous
❑ Intermittent
a
r
1.14
Is wastewater applied to land?
x
❑ Yes B No SKIP to Item 1.16.
1.15
Provide the land application site and discharge data requested below.
Land Applicattlon Site
and Discharge Data
'o
Average Daily
Continuous or
Location
size
Intermittent
m
check one
axes
gpd
❑ Continuous
❑ Intermittent
0
a
acres
gpd
❑ Continuous
S
❑ Intermittent
acres
gpd]❑
❑ Continuous
Intermittent
1.16
Is effluent transported to another facility for treatment prior to discharge?
❑ Yes 0 No + SKIP to Item 1.21.
0
1.17
Describe the means by which the effluent is transported (e.g., tank truck, pipe).
1.16
Is the effluent transported by a party other than the applicant?
❑ Yes ❑ No + SKIP to Item 1.20.
1.19
Provide information on the transporter below.
Tra 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
Page 3

NPDES Permit himber
Fadlity Name
Modified Application Form 2A
NCO074900
Hwy 150 Riverpark 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.
Reeeivin F 111ty 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
A
c
1.21
Is the wastewater disposed of in a manner other than those already mentioned in Items 1.14 through 1.21 that do
'ggg
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.
c
1.22
Provide information in the table below on these other disposal methods.
Information on Other Diaposal
Methods
Disposal
Location of
Size of
Annual Average
Continuous or IntermRtent
`w
Method
Disposal SRe
Disposal Site
DailyDischarge(check
one)
Description
on
'—"
❑ Continuous
acres
gpd
❑ Intermittent
acres
gpd
❑ Continuous
❑ 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)7 (Check all that apply.
Consult with your NPDES permitting authority to determine what information needs to be submitted and when.)
❑ Dischargesmarine waters (CWA ❑ Water quality related effluent limitation (CWA Section
Secti301(h))
❑✓ 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 contractor's operational
and maintenance responsibilites.
Contractor Information
Contractor 1
Contractor 2
Contractor 3
a
Contractor name
(company name
a
Mailing address
street or P.O. box
o
City, state, and ZIP
code
Contact name (first and
u
last
Phone number
Email address
Operational and
maintenance
responsibilities of
contractor
Page 4

NPDES Permit Number Facility Name Modified Application Form 2A
NCO074900 Hwy 150 Riverpark W WTP Modified March 2021
SECTION 2. ADDITIONAL INFORMATION (40 CFR 122.216)(1) and (2))
e Clutfaiis 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 mgd?
m
❑✓ Yes ❑ No 4 SKIP to Section 3.
c
0
2.2
Provide the treatment works' current average daily volume of inflow
Average Daily Volume of Inflow and Infiltration
gpd
r!
and infiltration.
z
Indicate the steps the facility is taking to minimize inflow and infiltration.
v
a
a
c
r
2.3
Have you attached a topographic map to this application that contains all the required information? (See instructions for
specific requirements.)
o
CL 0
❑✓ Yes ❑ No
r-
2.4
Have you attached a process flow diagram or schematic to this application that contains all the required information?
c
(See instructions for specific requirements.)
r` o
❑✓ Yes ❑ No
2.5
Are improvements to the facility scheduled?
❑ Yes ❑ No 4 SKIP to Section 3.
Briefly list and describe the scheduled improvements.
0
q
1.
E
E
n
2.
E
`0
d
3.
a
d
u
4.
a
2.6
Provide scheduled or actual dates of completion for improvements.
Scheduled
or Actual Dates of Com lelion for Improvements
E
Scheduled
Affected
Outlalls
Begin
End
Begin
Attainment of
Operational
o
Improvement
(number Dutfall
Construction
Construction
Discharge
LevMM�D el
E
(from above)
(MMIDD/YYYY)
(MMIDD/YYYY)
(MMIDDNWY)
a
1.
v
d
L
in
2.
3.
4.
2.7
Have appropriate permits/clearances concerning other federal/state requirements been obtained? Briefly explain your
response.
❑ Yes ❑ No ❑ None required or applicable
Explanation:
Page 5

NPDES Permit Number Faality Name Modified Application Form 2A
NC0074900 Hwy 1S0 Riverpark WWTP Modified March 2021
SECTION•' • ON DISCHARGES
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
County
Iredell
O
`o
City or town
Mooresville
`s
Distance from shore
1056 ft.
ft.
ft.
n
Depth below surface
20 ft.
d
0
Average daily flow rate
0.040 mgd
mgd
mgd
Latitude
35" 3e 17" N
„
Longitude
90 Se 35" W
"
3.2
Do any of the outfalls described under Item 3.1 have seasonal or periodic discharges?
❑ Yes ✓❑ No 4 SKIP to Item 3A.
0
we
3.3
If so, provide the following information for each applicable outfall.
,c
Outfall Number _
Outfall Number _
WIWI Number
0
Number of times per year
discharge occurs
P6
Average duration of each
`o
discharge (specify units
Average flow of each
mgd
mgd
mgd
discharge
Months in which discharge
occurs
3.4
Are any of the outfalls listed under Item 3.1 equipped with a dtffuseR
❑ Yes ❑r No 4 SKIP to Item 3.6.
3.5
Briefly describe the diffuser t pe at each applicable outfall.
Outfall Number_
Outfall Number_
Outfall Number_
'
Does the treatment works discharge or plan to discharge wastewater to waters of the State of North Carolina from
Ci
!°
3.6
one or more discharge points?
11
Q Yes ❑ No 4 SKIP to Section 6.
Page 6

NPDES Permft Number
FaciWy Name
Modified Applimbon Fonrn 2A
NC0074900
Hwy 150 Riverpark W WTP
Modified March 2021
33
Provide the receiving water and related information if known for each outfall.
Outfall Number 001
Outfall Number
Outfall Number
Receiving water name
Catawba River (Lake Norman)
Name of watershed, river,
Catawba River
or stream system
T
U.S. Soil Conservation
Service 14-digit watershed
code
Name of state
Catawba
3
management/river basin
oa
U.S. Geological Survey
Z
&digit hydrologic
re
cataloging unit code
Critical low flow (acute)
cfs
ds
cfs
Critical low flow (chronic)
cis
cis
cis
Total hardness at critical
mg/L of
mg/L of
mg/L of
low flow
CaCO3
CaCO3
CaCO3
3.8
Provide the following informagon describing the treatment providad for discharges from each outfall.
Outfall 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
O Secondary
❑ Secondary
❑ Secondary
❑ Advanced
❑ Advanced
❑ Advanced
❑ Other (specify)
❑ Other (specify)
❑ Other (specify)
e
Design Removal Rates by
Outfall
BODs or CBODs
a5 %
%
%
TSS
85 %
%
%
0 Not applicable
❑ Not applicable
❑ Not applicable
Phosphorus
%
%
%
0 Not applicable
❑ Not applicable
❑ Not applicable
Nitrogen
%
%
%
Other (specify)
❑ Not applicable
❑ Not applicable
❑ Not applicable
04
Page 7

NPDES Permit Number
Facility Name
Modified Application Form 2A
NCO074900
Hwy 150 Riverpark W WTP
Modified March 2021
3.9
Describe the type of disinfection used for the effluent from each oulfall in the table below. If disinfection varies by
season, describe below.
c
0
U
Outfall Number 001
Outfall Number
Outfall Number
o
n
Disinfection type
Tablet Chlorination w/contact
u
ro
tank
0
Seasons used
All
E
E
d
Dechlorination used?
❑ Not applicable
❑ Not applicable
❑ Not applicable
❑� Yes
❑ Yes
❑ Yes
❑ No
❑ No
❑ No
3.10
Have you completed monitoring for all Table A parameters and attached the results to the application package?
r❑ 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 ❑r No + SKIP to Item 3.13.
3.12
Indicate the number of acute and chronic WET tests conducted since the last permit reissuance of the facilitys
discharges by outfall number or of the receivingwater near the discharge points.
OulfallNumber_
OutfallNumber
Outfall Number
Acute
Chronic
Acute
Chronic
Acute
Chronic
Number of tests of discharge
g'
water
F
Number of tests of receiving
water
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 + 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?
E 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?
❑ Yes O No additional sampling required by NPDES
permittingauthority.
Page 8

NPDES Permit Number
Facility Name
Modified Application Form 2A
NCO074900
Hwy 150 Riverpark 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?
❑ Yes O No + Complete tests and Table E and SKIP to
Item 3.26.
3.20
Have you previously submitted the results of the above tests to your NPDES permitting authority?
❑ Yes ❑ No + Provide results in Table E and SKIP to
Item 3.26,
3.21
Indicate the dates the data were submitted to Mur NPDES permitting authority and provide a summary of the results.
Daft(s) Submitted
Summary of Results
MIDD
v
m
c
c
0
c'
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?
❑ Yes ❑ No 4 SKIP to Item 3.26.
d
3.23
Describe the cause(s) of the toxicity:
d
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 O Not applicable because previously submitted
information to the NPDES Dermitlino authority.
Page 9

NPDES Permit Number Facility Name Modified Applicabon Form 2A
NCO074900 Hwy 150 Riverpark W WTP Modified March 2021
SECTION1
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 required to provide attachments.
Column 7
Column 2
El Section 1: Basic Application
El w/ variance request(s) ❑ wl additional attachments
Information for NI licants
Section 2: Additional❑
0
wl topographic map w/ process flow diagram
Information
❑ wl additional attachments
© w/ Table A ❑ wit Table D
Section 3: Information on
❑
✓❑ w/ Table B ❑ wl additional attachments
Effluent Discharges
❑ wl Table C
Section 4: Not Applicable
0
Section 5: Not Applicable
Section 6: Checldist and
❑ wl attachments
q
Certification Statement
>b
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 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.
lost
Qffiaial title
Narne (print or Im first siord riame)
Brent Milliron
Envir. Compliance Director
Signature
✓1'1�%�_
Date signed
10/01/2024
RECElveo
ocl 01 )0
NCp, W)WRINPOE5
Page 10

NPDES Permit Number
Facility Name
Outrall Number
NCO074900
Hwy 150 Riverpark WWTP
001
Modified Application Form 2A
Modified March 2021
Maximum Daily Discharge
Average Daily Discharge
Analytical ML or MDL
Value
Units
Value
Untie
Number of
ollutant
Methods include units
( )
Samples
al oxygen demand
2.0
r O CBODs
19.4
mg/L
0.51
mg/L
160
SM52108 0 MDL
e
[re7
orm
163,00
p/Iooml
12.86
g/looml
161
SM9222D (MF) 1.0 DML
2 MDL
w rate
98,000
gallons
40409
gallons
1127
um)
6.6um)
8.6mperature
(winter)
29
degrees Celsius
15.9
degrees Celsius
327
Temperature (summer)
32.0
degrees Celsius
25.84
degrees Celsius
460
Total suspended solids (TSS)
14
mg/L
0.67
mg/L
160
SM25400 2.5 0 MDL
t Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., methods) approved under 40 CFR 136 for the analysis or pollutants or pollutant parameters of
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
Page 11

ES Permit Number Facili Name Oudall Number Modified Application Form 2A
NCO074900 Hwy 150 Riv rpark W WTP 001 Modified March 2021
a• •a a �
a �
t �
Average Daily Discharge
Analytical
ML or MDL
Maximum Daily Discharge
Value
Units
V
us
Units
Number of
Pollutant
Method'
includeunNs
( �
Samples
Ammonia (as N)
2.97
mg/L
0.36
mg/L
160
SM450ONH3D
OML
0.2 O MDL
Chlorine
47
ug/L
9.65
ug/L
321
Field -Hach DBD
ML
❑MDL
total residual, TRC 2
Dissolved oxygen
10.7
mg/L
841
mg/L
163
Field -Hach DBD
O ML
❑ MDL
Nitrate/nitrite
37.3
mg/L
2
98
mg/L
12
HACH 10206
0.3 mg/L O ML
❑ MDL
Keldahl nitrogen
4.6
mg/L
0.
75
mg/L
12
HACH 10242, Rev 1.
1.0 mg/L O MDL
Oil and grease
0.0
mg/L
.0
mg/L
160
EPA 1664B
Z ML
5.0 mg/L 0 MDL
Phosphorus
6.36
mg/L
455
mg/L
13
SM450OPE-2021
0.16 mg/L O ML
❑ MDL
❑ ML
Total dissolved solids
❑ MDL
1 Sampling shall be conducted according to sufficiently sensitive test procedures (i.e., n
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 or pollutants or pollutant parameters or
process, and have no reasonable potential to discharge chlorine in their effluent are not
EPA Form 3510.2A (Revised 3.19) 1 Page 12

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Raw
Effluent
Equalization
Tank
Dual activated sludge
with diffused air and
clarification
Sludge Holding
Tank
Pumped
and
Hauled
Highway 150 WWTP
NCO074900
Process Flow Diagram
Tertiary
Filters
Chlorine Contact
Dechlorination
Aeration
Out -fall 001