NC0069841_Renewal (Application)_20220526

ROY COOPER 2
Governor � r •
f.,•,;;
ELIZABETH S.BISER "��r^"QUAM
Secretary
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
May 26, 2022
Union County
Attn: Jonathan Jordan
500 North Main Street
Monroe, NC 28110
Subject: Permit Renewal
Application No. NC0069841
Crooked Creek WWTP #2
Union County
Dear Applicant:
The Water Quality Permitting Section acknowledges the May 26, 2022 receipt of your permit renewal application and
supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW permitting
branch. Per G.S. 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.
Sincer
Wren hedford
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application
CIE Q North Carolina Department of Environmental Quality I Division of Water Resources
Mooresville Regional Office bl0 East Center Avenue,Suite 301 Mooresville.North Carolina 28115
°"'� 704 663.1699

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
Form U.S.Environmental Protection Agency
2A aEPA Application for NPDES Permit to Discharge Wastewater
NPDES NEW AND EXISTING PUBLICLY OWNED TREATMENT WORKS
SECTION 1.BASIC APPLICATION INFORMATION FOR ALL APPLICANTS(40 CFR 122.21(j)(1)and(9))
1.1 Facility name
Crooked Creek WWTP#2
Mailing address(street or P.O.box)
500 North Main Street
City or town State ZIP code
o Monroe NC 28112
E Contact name(first and last) Title Phone number Email address
c
Jonathan jordan WRF Superintendent [phone] jonathan.jordan@unioncoutr
Location address(street,route number,or other specific identifier) ❑ Same as mailing address
m 4215 Sardis Church Road
u_
City or town State ZIP code
Indian Trail NC 28110
1.2 Is this application for a facility that has yet to commence discharge?
❑ Yes-4 See instructions on data submission ✓❑ No RECEIVED
requirements for new dischargers. 1/
1.3 Is applicant different from entity listed under Item 1.1 above? 10/'v 2 5 2(122
❑✓ Yes ❑ No 4 SKIP to Item 1.4.
Applicant name NCDEQ/DWRiNPDES
Union County Water
c Applicant address(street or P.O.box)
0 500 North Main Street
1 �a
E 0 City or town State ZIP code
Monroe NC 28112
w.
Rs Contact name(first and last) Title Phone number Email address
a Jonathan Jordan WRF Superintendent [phone] jonathan.jordan@unioncoura
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.)
❑ Facility 0Applicant ❑ 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
A number for each.)
g . Existing Environmental Permits
Tis ❑✓ NPDES(discharges to surface ❑ RCRA(hazardous waste) ❑ UIC(underground injection
c water) control)
E NC0069841
2. ❑ PSD(air emissions) ❑ Nonattainment program(CAA) ❑ NESHAPs(CM)
c
w
rn
•
H ❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section ❑✓ Other(specify)
404)
Stormwater-NCG110070
EPA Form 3510-2A(Revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 0MB No.2040-0004
1.7 Provide the collection system information requested below for the treatment works.
Municipality Population Collection System Type Ownership Status
Served Served (indicate percentage)
Monroe 16,000
100 %separate sanitary sewer 0 Own 0 Maintain
Z %combined storm and sanitary sewer 0 Own 0 Maintain
N ❑ Unknown 0 Own 0 Maintain
o %separate sanitary sewer ❑ Own 0 Maintain
'I %combined storm and sanitary sewer 0 Own ❑ Maintain
0. 0 Unknown ❑ Own 0 Maintain
a %separate sanitary sewer ElOwn 0 Maintain
%combined storm and sanitary sewer ❑ Own 0 Maintain
E 0 Unknown 0 Own ElMaintain
;; %separate sanitary sewer 0 Own 0 Maintain
%combined storm and sanitary sewer 0 Own 0 Maintain
c 0 Unknown 0 Own ❑ Maintain
0 Total 16,000
d Population
o Served
Separate Sanitary Sewer System Combined Storm and
Sanitary Sewer
Total percentage of each type of o
sewer line(in miles) 1r0 /o /o
z' 1.8 Is the treatment works located in Indian Country?
•
o 0 Yes ❑✓ No
0
U
1.9 Does the facility discharge to a receiving water that flows through Indian Country?
c '-'' 0 Yes ❑✓ No
1.10 Provide design and actual flow rates in the designated spaces. Design Flow Rate
1.9 mgd
To
= y Annual Average Flow Rates(Actual)
•
aTwo Years Ago Last Year This Year
ix
c o 1.28 mgd 1.13 mgd 0.96 mgd
Maximum Daily Flow Rates(Actual)
o Two Years Ago Last Year This Year
3.59 mgd 3.27 mgd 2.5 mgd
y 1.11 Provide the total number of effluent discharge points to waters of the United States by type.
o Total Number of Effluent Discharge Points by Type
a a- Constructed
4) Combined Sewer
132 1—1- Treated Effluent Untreated Effluent Overflows Bypasses Emergency
03 Overflows
0
N_
0 1 N/A N/A N/A N/A
EPA Form 3510-2A(Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
Outfalls Other Than to Waters of the United States
1.12 Does the POTW discharge wastewater to basins,ponds,or other surface impoundments that do not have outlets for
discharge to waters of the United States?
❑ Yes ❑✓ No 4 SKIP to Item 1.14.
1.13 Provide the location of each surface impoundment and associated discharge information in the table below.
Surface Impoundment Location and Discharge Data
Average Daily Volume Continuous or Intermittent
Location Discharged to Surface
Impoundment (check one)
❑ Continuous
gpd ❑ Intermittent
❑ Continuous
gpd ❑ Intermittent
❑ Continuous
gpd 0 Intermittent
r 1.14 . Is wastewater applied to land?
❑ Yes ❑✓ No 4 SKIP to Item 1.16.
0 1.15 Provide the land application site and discharge data requested below.
0.N Land Application Site and Discharge Data
Continuous or
Location Size Average Daily Volume Intermittent
R Applied (check one)
yacres d 0 Continuous
o gp 0 Intermittent
acres d 0 Continuous
0 gp 0 Intermittent
0 El Continuous
acres gpd0 Intermittent
1.16 Is effluent transported to another facility for treatment prior to discharge?
0
❑ Yes ❑ No 4 SKIP to Item 1.21.
1.17 Describe the means by which the effluent is transported(e.g.,tank truck,pipe).
1.18 Is the effluent transported by a party other than the applicant?
❑ Yes ❑✓ No 4 SKIP to Item 1.20.
1.19 Provide information on the transporter below.
Transporter Data
Entity name Mailing address(street or P.O.box)
City or town State ZIP code
Contact name(first and last) Title
Phone number Email address
•
EPA Form 3510-2A(Revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
1.20 In the table below,indicate the name,address,contact information, NPDES number,and average daily flow rate of the
receiving facility.
Receiving Facility Data
Facility name Mailing address(street or P.O.box)
a)
.c City or town State ZIP code
0
Contact name(first and last) Title
0
cp Phone number Email address
cNPDES number of receiving facility(if any) 0 None Average daily flow rate mgd
0 1.21 Is the wastewater disposed of in a manner other than those already mentioned in Items 1.14 through 1.21 that do not
0 have outlets to waters of the United States(e.g.,underground percolation,underground injection)?
L ❑ 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 Disposal Methods
oDisposal Location of Size of Annual Average Continuous or Intermittent
= Method Disposal Site Disposal Site Daily Discharge (check one)
Description Volume
acres gpd ❑ Continuous
0 Intermittent
0
acres d Continuous
gp ❑ Intermittent
acresgpd ❑ 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 to determine what information needs to be submitted and when.)
c c ❑ Discharges into marine waters(CWA ❑ Water quality related effluent limitation(CWA Section
y 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 contractor's operational
and maintenance responsibilities.
Contractor Information
Contractor 1 Contractor 2 Contractor 3
o Contractor name
(company name)
Mailing address
(street or P.O.box)
City,state,and ZIP
ns
code
Contact name(first and
0
last)
Phone number
Email address
Operational and
maintenance
responsibilities of
contractor
EPA Form 3510-2A(Revised 3-19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
SECTION 2.ADDITIONAL INFORMATION(40 CFR 122.21(j)(1)and(2))
o Outfalls to Waters of the United States
= 2.1 Does the treatment works have a design flow greater than or equal to 0.1 mgd?
❑✓ Yes ❑ No 4 SKIP to Section 3.
0 2.2 Provide the treatment works'current average daily volume of inflow Average Daily Volume of Inflow and Infiltration
and infiltration. 200,448 gpd
Indicate the steps the facility is taking to minimize inflow and infiltration.
c Facility has addressed key manhole defects and PVC cleanouts that were contributors of I&I as recommended by
0 external consulting engineering firm.Work was completed in 3rd quarter of 2019.
2.3 Have you attached a topographic map to this application that contains all the required information?(See instructions for
a a specific requirements.)
o �
Fo ✓❑ Yes ❑ • No
E 2.4 Have you attached a process flow diagram or schematic to this application that contains all the required information?
Eti (See instructions for specific requirements.)
cn
`L 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.
1. Electrical improvements:Replace electrical equipment,modify sludge transfer pump station building electrical
rmmnnnantc rlarnmmiccinn PlartriraI aniiinmant in tha avictina lima ctnraaa/mivar hitilrlina 0
E
2.Construct new influent pump station,headworks structure,equalization tank,and relocate 1200 feet of sewer lines
0
3. Minor mechanical and electrical improvements to oxidation tanks,scum pumping,return sludge pumping,and control:
cu
a�
4.
cn
al 2.6 Provide scheduled or actual dates of completion for improvements.
Scheduled or Actual Dates of Completion for Improvements
E Scheduled Affected Attainment of
d Begin End Begin
'2Outfalls Operational
Improvement Construction Construction Discharge
£ (from above) (list outfall (MM/DD/YYYY) (MM/DD/YYYY) (MM/DD/YYYY) Level
number) (MM/DD/YYYY)
1 001 09/07/2021 02/13/2023
a
2. 001 12/01/2018
3. 001 05/10/2021 06/14/2022
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:
EPA Form 3510-2A(Revised 3-19) Page 5

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
SECTION 3.INFORMATION ON EFFLUENT DISCHARGES(40 CFR 122.21(j)(3)to(5))
3.1 Provide the following information for each outfall.(Attach additional sheets if you have more than three outfalls.)
Outfall Number 001 Outfall Number Outfall Number
State NC
County Union
cc' •
City or town Monroe
o Distance from shore ft. ft. ft.
.Q
Depth below surface ft. ft. ft.
Average daily flow rate 1.9 mgd mgd mgd
Latitude 35° 05' 47" N
Longitude 80° 35' 53" W
A
3.2 Do any of the outfalls described under Item 3.1 have seasonal or periodic discharges?
o ❑ Yes ❑✓ No 4 SKIP to Item 3.4.
3.3 If so,provide the following information for each applicable outfall.
Outfall Number Outfall Number Outfall Number
Number of times per year
0 discharge occurs
a Average duration of each
discharge(specify units)
To
Average flow of each
0 discharge mgd mgd mgd
Months in which discharge
occurs
3.4 Are any of the outfalls listed under Item 3.1 equipped with a diffuser?
❑ Yes ❑✓ No-4 SKIP to Item 3.6.
3.5 Briefly describe the diffuser type at each applicable outfall.
0_
Outfall Number Outfall Number Outfall Number
N
w
w
ui 3.6 'Does the treatment works discharge or plan to discharge wastewater to waters of the United States from one or more
discharge points?
❑✓ Yes ❑ No-*SKIP to Section 6.
EPA Form 3510-2A(Revised 3-19) Page 6

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
3.7 Provide the receiving water and related information(if known)for each outfall.
Outfall Number 001 Outfall Number Outfall Number
Receiving water name North Fork Crooked Creek
Name of watershed,river,
0 or stream system Crooked Creek River Basin
a. U.S.Soil Conservation
N Service 14-digit watershed 03040105040010
o code
Name of state
management/river basin NCDEQ
a)
U.S.Geological Survey
8-digit hydrologic 03040105
re cataloging unit code
Critical low flow(acute) 0 cfs cfs cfs
Critical low flow(chronic) cfs cfs cfs
Total hardness at critical mg/L of mg/L of mg/L of
1 low flow N/A CaCO3 CaCO3 CaCO3
3.8 Provide the following information describing the treatment provided for discharges from each outfall.
Outfall Number 001 Outfall Number Outfall Number
Highest Level of El Primary 0 Primary 0 Primary
Treatment(check all that 0 Equivalent to 0 Equivalent to 0 Equivalent to
apply per outfall) secondary secondary secondary
O Secondary 0 Secondary 0 Secondary
1 El Advanced 0 Advanced ❑ Advanced
O Other(specify) 0 Other(specify) 0 Other(specify)
c
0
'a Design Removal Rates by
Outfall Per concentration limits
N
ca
cu
BOD5 or CBOD5 >85
d
E
co
1,2 TSS >85 % % %
H
0 Not applicable 0 Not applicable ❑Not applicable
Phosphorus
0 Not applicable 0 Not applicable 0 Not applicable
Nitrogen /o/o o 0 %
/o
Other(specify) 0 Not applicable 0 Not applicable 0 Not applicable
'Ammonia concentration % % %
EPA Form 3510-2A(Revised 3-19) Page 7

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
3.9 Describe the type of disinfection used for the effluent from each outfall in the table below. If disinfection varies by
season,describe below.
Ultraviolet light disinfection system.Previous CT based chlorination system followed by dechlorination available as
cu
backup.
0
U
= Outfall Number 001 Outfall Number Outfall Number
a Disinfection type
0 Ultraviolet light
N
0
= Seasons used All
Dechlorination used? ❑✓ Not applicable ❑ Not applicable ❑ Not applicable
❑ Yes ❑ Yes 0 Yes
❑ No 0 No 0 No
3.10 Have you completed monitoring for all Table A parameters and attached the results to the application package?
✓❑ Yes 0 No
3.11 Have you conducted any WET tests during the 4.5 years prior to the date of the application on any of the facility's
discharges or on any receiving water near the discharge points?
❑✓ Yes •0 No 4 SKIP to Item 3.13.
3.12 Indicate the number of acute and chronic WET tests conducted since the last permit reissuance of the facility's
discharges by outfall number or of the receiving water near the discharge points.
Outfall Number 001 Outfall Number Outfall Number
Acute Chronic Acute Chronic Acute Chronic
Number of tests of discharge • 14 14
water
Number of tests of receiving
water
3.13 Does the treatment works have a design flow greater than or equal to 0.1 mgd?
❑✓ Yes ❑ No 4 SKIP to Item 3.16.
0 3.14 Does the POTW use chlorine for disinfection,use chlorine elsewhere in the treatment process,or otherwise have
reasonable potential to discharge chlorine in its effluent?
✓❑ 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?
w ❑✓ Yes 0 No
3.16 Does one or more of the following conditions apply?
• The facility has a design flow greater than or equal to 1 mgd.
• The POTW has an approved pretreatment program or is required to develop such a program.
• The NPDES permitting authority has informed the POTW that it must sample for the parameters in Table C,must
sample other additional parameters(Table D),or submit the results of WET tests for acute or chronic toxicity for
each of its discharge outfalls(Table E).
❑ Yes-) Complete Tables C, D,and E as ❑ No 4 SKIP to Section 4.
applicable.
3.17 Have you completed monitoring for all applicable Table C pollutants and attached the results to this application
package?
❑✓ Yes ❑ No
•
3.18 Have you completed monitoring for all applicable Table D pollutants required by your NPDES permitting authority and
attached the results to this application package?
❑ Yes No additional sampling required by NPDES
permitting authority.
EPA Form 3510-2A(Revised 3-19) Page 8

•
EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
3.19 Has the POTW conducted either(1)minimum of four quarterly WET tests for one year preceding this permit application
or(2)at least four annual WET tests in the past 4.5 years?
❑✓ Yes ❑ No 4 Complete tests and Table E and SKIP to
Item 3.26.
3.20 Have you previously submitted the results of the above tests to your NPDES permitting authority?
❑✓ Yes ❑ No+ Provide results in Table E and SKIP to
Item 3.26.
3.21 Indicate the dates the data were submitted to your NPDES permitting authority and provide a summary of the results.
Date(s)Submitted Summary of Results
(MM/DDNYYY)
Overall result for all tests prior to the date listed indicated a PASS.
11/23/2021
r 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.
3.23 Describe the cause(s)of the toxicity:
a�
w
3.24 Has the treatment works conducted a toxicity reduction evaluation?
❑ Yes ❑ No 4 SKIP to Item 3.26.
3.25 Provide details of any toxicity reduction evaluations conducted.
3.26 Have you completed Table E for all applicable outfalls and attached the results to the application package?
❑ Yes ❑✓ Not applicable because previously submitted
information to the NPDES•ermittin• authorit .
SECTION 4.INDUSTRIAL DISCHARGES AND HAZARDOUS WASTES(40 CFR 122.21(j)(6)and(7))
4.1 Does the POTW receive discharges from Sills or NSCIUs?
❑ Yes ❑✓ No 4 SKIP to Item 4.7.
'v 4.2 Indicate the number of SIUs and NSCIUs that discharge to the POTW.
Number of Sills Number of NSCIUs
4.3 Does the POTW have an approved pretreatment program?
❑ Yes ❑ No
2 4.4 Have you submitted either of the following to the NPDES permitting authority that contains information substantially
identical to that required in Table F:(1)a pretreatment program annual report submitted within one year of the
application or(2)a pretreatment program?
s
❑ Yes ❑ No 4 SKIP to Item 4.6.
70 4.5 Identify the title and date of the annual report or pretreatment program referenced in Item 4.4.SKIP to Item 4.7.
�L
—
4.6 Have you completed and attached Table F to this application package?
❑ Yes ❑ No
EPA Form 3510-2A(Revised 3-19) Page 9

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
4.7 Does the POTW receive,or has it been notified that it will receive, by truck,rail,or dedicated pipe, any wastes that are
regulated as RCRA hazardous wastes pursuant to 40 CFR 261?
❑ Yes ❑✓ No-) SKIP to Item 4.9.
4.8 If yes,provide the following information:
Annual
Hazardous Waste Waste Transport Method Amount of Units
Number (check all that apply) Waste
Received
❑ Truck ❑ Rail
-221
❑ Dedicated pipe ❑ Other(specify)
w ❑ Truck ❑ Rail
❑ Dedicated pipe ❑ Other(specify)
O
N ❑ Truck ❑ Rail
co
_ ❑ Dedicated pipe ❑ Other(specify)
a
4.9 Does the POTW receive,or has it been notified that it will receive,wastewaters that originate from remedial activities,
including those undertaken pursuant to CERCLA and Sections 3004(7)or 3008(h)of RCRA?
❑ Yes ❑✓ No 4 SKIP to Section 5.
3 4.10 Does the POTW receive(or expect to receive)less than 15 kilograms per month of non-acute hazardous wastes as
specified in 40 CFR 261.30(d)and 261.33(e)?
❑ Yes 4 SKIP to Section 5. ❑ No
4.11 Have you reported the following information in an attachment to this application:identification and description of the
site(s)or facility(ies)at which the wastewater originates;the identities of the wastewater's hazardous constituents;and
the extent of treatment,if any,the wastewater receives or will receive before entering the POTW?
0 Yes ❑ No
SECTION 5.COMBINED SEWER OVERFLOWS(40 CFR 122.21(j)(8))
5.1 Does the treatment works have a combined sewer system?
❑ Yes 0 No 4SKIP to Section 6.
cts
-0 5.2 Have you attached a CSO system map to this application?(See instructions for map requirements.)
a ❑ Yes ❑ No
0
5.3 Have you attached a CSO system diagram to this application?(See instructions for diagram requirements.)
❑ Yes ❑ No
EPA Form 3510-2A(Revised 3-19) Page 10

r
EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
5.4 For each CSO outfall,provide the following information. (Attach additional sheets as necessary.)
CSO Outfall Number CSO Outfall Number CSO Outfall Number
City or town
0
Q State and ZIP code
0
o County
0
o Latitude ° el
0 °
cn Longitude '
o
Distance from shore ft. ft. ft.
Depth below surface ft. ft. ft.
5.5 Did the POTW monitor any of the following items in the past year for its CSO outfalls?
CSO Outfall Number CSO Outfall Number CSO Outfall Number
Rainfall ❑ Yes ❑ No ❑ Yes ❑ No ❑ Yes ❑ No
rn
c
`o CSO flow volume 0 Yes ❑ No ❑ Yes ❑ No ❑ Yes ❑ No
CSO pollutant ❑ Yes ❑ No ❑ Yes ❑ No ❑ Yes ❑ No
o concentrations
N
c.' Receiving water quality 0 Yes ❑ No ❑ Yes ❑ No ❑ Yes ❑ No
CSO frequency ❑ Yes ❑ No ❑ Yes ❑ No ❑ Yes ❑ No
Number of storm events ❑ Yes ❑ No ❑ Yes ❑ No ❑ Yes ❑ No
5.6 Provide the following information for each of your CSO outfalls.
CSO Outfall Number CSO Outfall Number CSO Outfall Number
} Number of CSO events in events events events
y the past year
R
a
c Average duration per hours hours hours
co event 0 0 Actual or 0 Estimated 0 Actual or ElEstimated 0 Actual or 0 Estimated
>
"' million gallons million gallons million gallons
o Average volume per event
`"
c.0 0 Actual or 0 Estimated 0 Actual or 0 Estimated 0 Actual or 0 Estimated
Minimum rainfall causing inches of rainfall inches of rainfall inches of rainfall
a CSO event in last year 0 Actual or 0 Estimated ❑Actual or 0 Estimated 0 Actual or 0 Estimated
EPA Form 3510-2A(Revised 3-19) Page 11

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
5.7 Provide the information in the table below for each of your CSO outfalls.
CSO Outfall Number CSO Outfall Number CSO Outfall Number
Receiving water name
Name of watershed/
N stream system
a; U.S.Soil Conservation ❑ Unknown 0 Unknown 0 Unknown
i Service 14-digit
0) watershed code
: (if known)
0 Name of state
re management/river basin \
cnU.S.Geological Survey 0 Unknown El Unknown ❑ Unknown
8-Digit Hydrologic Unit
Code(if known)
Description of known
water quality impacts on
receiving stream by CSO
(see instructions for
exam•les
SECTION 6.CI-ECKLIST AND CERTIFICATION STATEMENT(40 CFR 122.22(a)and(d))
6.1 In Column 1 below,mark the sections of Form 2A that you have completed and are submitting with your application.For
each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority.Note that not
all applicants are required to provide attachments.
Column 1 Column 2
Section 1: Basic Application
Information for All Applicants ❑ w/variance request(s) Elw/additional attachments
❑ Section 2:Additional ✓❑ wl topographic map ❑✓ w/process flow diagram
Information ❑ w/additional attachments
❑✓ w/Table A ❑✓ w/Table D
❑ Section 3: Information on ❑ wl Table B ID Table E
c Effluent Discharges
E ✓❑ w/Table C ❑ w/additional attachments
w Section 4: Industrial ❑ w/SIU and NSCIU attachments ❑ w/Table F
0 Discharges and Hazardous
s Wastes ❑ w/additional attachments
;� ❑ Section 5:Combined Sewer 0 w/CSO map El w/additional attachments
- Overflows
c El w/CSO system diagram
Section 6:Checklist and
❑ Certification Statement El wl attachments
To
Y 6.2 Certification Statement
0
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(print7
ty e first and last name) Official title
COON r 44n 41_
r
Signature I . Date signed
1
I a. ,. 0549/Z©Z2-
EPA Form 3510-2A(Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Dutrall Number Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
TABLE A.EFFLUENT PARAMETERS FOR ALL POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of
Value Units Value Units Method' (include units)
Sam•les
•
Biochemical oxygen demand ML
o BODE or o CBOD5 188 mg/I < mg/L 778 SM5210B-11 . 2 mg/L O MDL
resort one
Fecal coliform 6500 No./100 mL 17.55 #/100 mL 781 SM9222D-06 1#/100 rd O MDL
•
Design flow rate 3.76 mgd 1.08 mgd 1734
pH(minimum) 5.9 su
pH(maximum) 8.10 su
Temperature(winter) 17.23 deg C 13.88 deg C 397
Temperature(summer) 26.77 deg C 24.88 deg C 432
ML
Total suspended solids(TSS) 564 mg/L 2.83 mg/L 791 SM2540D-11 2.5 mg/L 0 MDL
Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2A(Revised 3-19) Page 13

This page intentionally left blank.

r
EPA Identification Number NPDES Permit Number Facility Name Duffel!Number Form Approved 03/05119
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
TABLE B.EFFLUENT PARAMETERS FOR ALL POTWS WITH A FLOW EQUAL TO OR GREATER THAN 0.1 MGD
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of
Value Units Value Units Samples Methods (include units)
0 ML
Ammonia(as N) 3.60 mg/L 0.04 mg/L 780 EPA 350.1 0.03 mg/L m MDL
Chlorine m ML
(total residual,TRC)2 0 mg/L 0 mg/L 3 Hach 10014ULR 15 mg/L 0 MDL
Dissolved oxygen 13.10 mg/L 8.97 mg/L 1216 ATSM D888-09C 1 mg/L 0 MDL
0 ML
Nitrate/nitrite 54.7 mg/L 26.65 mg/L 61 EPA 353.2 0.1 mg/L m MDL
0 ML
Kjeldahl nitrogen 34.0 mg/L 1.21 mg/L 61 EPA 351.1 0.219 mid m MDL
0 ML
Oil and grease < mg/L < mg/L 4 EPA 1664B 5 mg/L 0 MDL
Phosphorus 8.6 mg/L 3.6 mg/L 62 EPA 200.7 0.026 mei m MDL
ML
Total dissolved solids 604 mg/L 461 mg/L 4 SM 2540C-11 10 0 MDL
I Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
2 Facilities that do not use chlorine for disinfection,do not use chlorine elsewhere in the treatment process,and have no reasonable potential to discharge chlorine in their effluent are not
required to report data for chlorine.
•
EPA Form 3510-2A(Revised 3-19) Page 15

This page intentionally left blank.

EPA Identification Number NPDES Perm@ Number Facility Name Outfall Number Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No 2040-0004
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method, (include units)
Value Units Value Units Samples
Metals,Cyanide,and Total Phenols
o ML
Hardness(as CaCOr) 200 mg/L 140 mg/L 4 SM 2340C 0.088 and O MDL
Antimony,total recoverable < ug/L < ug/L 4 EPA 200.7 3.398 ugl 0 MDL
Arsenic,total recoverable < ug/L < ug/L 4 EPA 200.7 1.045 ug ML
h
0 MDL
0 ML
Beryllium,total recoverable < ug/L < ug/L 4 EPA 200.7 0.25 ug/L ©MDL
Cadmium,total recoverable < ug/L < ug/L 4 EPA 200.7 0.031 ut/ 0 MDL
Chromium,total recoverable 6.1 ug/L 1.53 ug/L 4 EPA 200.7 0.298 ut 0 ML
0 MDL
0 ML
Copper,total recoverable 9.8 ug/L 6.8 ug/L 4 EPA 200.7 0.224 411 CI MDL
Lead,total recoverable < ug/L < ug/L 4 EPA 200.7 0.855 u °ML
�MDL
Z ML
Mercury,total recoverable 0.83 ng/L < ng/L 3 EPA 1631E 0.5 ng/L 0 MDL
ML
Nickel,total recoverable 40 ug/L 21.75 ug/L 4 EPA 200.7 0.15 ug/L 0 MDL
ML
Selenium,total recoverable < ug/L < ug/L 4 EPA 200.7 2.01 ug/L 0 MDL
Silver,total recoverable < ug/L < ug/L 4 EPA 200.7 0.583 u 0 ML
�
El MDL
Thallium,total recoverable < ug/L < ug/L 4 EPA 200.7 0.737 uft ML
MDL
Zinc,total recoverable 240 ug/L 58 ug/L 43 EPA 200.8 0.802 ugh ML
2 MDL
ML
Cyanide < ug/L < ug/L 4 EPA 335.4 0.93 ug/L 0 MDL
Total phenolic compounds < mg/L < mg/L 4 EPA 420.1 0.05 mg/L 0 ML
❑MDL
Volatile Organic Compounds
ML
Acrolein < ug/L < ug/L 4 EPA 624.1 4.98 ug/L 0 MDL
ML
Acrylonitrile < ug/L ' < ug/L 4 EPA 624.1 0.54 ug/L 0 MDL
Benzene < ug/L < ug/L 4 EPA 624.1 0.32 ug/L 0 MDL
ML
Bromoform < ug/L < ug/L 4 EPA 624.1 0.35 ug/L 0 MDL
EPA Form 3510-2A(Revised 3-19) Page 17

I EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03105119
NC0069841 Crooked Creek WWTP ff2 - OMB No.2040-0004
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge
Pollutant Analytical ML or MDL
Value Units Value Units Number of Methodr (include units)
Samples
o ML
Carbon tetrachloride < ug/L < ug/L 4 EPA 624.1 0.28 ug/L m MDL
ML
Chlorobenzene < ug/L < ug/L 4 EPA 624.1 0.37 ug/L p MDL
Ota
Chlorodibromomethane < ug/L < ug/L 4 EPA 624.1 0.51 ug/L MDL
0 ML
Chloroethane < ug/L < ug/L 4 EPA 624.1 0.84 ug/L m MDL
ML
2-chloroethylvinyl ether < ug/L < ug/L 4 EPA 624.1 0.47 ug/L 0 MDL
0 ML
Chloroform < ug/L < ug/L 4 EPA 624.1 0.35 ug/L m MDL
0 ML
Dichlorobromomethane < ug/L < ug/L 4 EPA 624.1 0.26 ug/L m MDL
0 ML
1,1-dichloroethane < ug/L < ug/L 4 EPA 624.1 0.24 ug/L m MDL
0 ML
1,2-dichioroethane < ug/L < ug/L 4 EPA 624.1 0.18 ug/L m MDL
trans-1,2-dichloroethylene < ug/L < ug/L 4 EPA 624.1 0.42 ug/L p MDL
1,1-dichloroethylene < ug/L < ug/L 4 EPA 624.1 0.35 ug/L m MDL
O ML
1,2-dichloropropane < ug/L < ug/L 4 EPA 624.1 0.32 ug/L m MDL
0 ML
1,3-dichloropropylene < ug/L < ug/L 4 EPA 624.1 0.35 ug/L m MDL
0 ML
Ethylbenzene < ug/L < ug/L 4 EPA 624.1 •0.44 ug/L m MDL
Methyl bromide • < ug/L < ug/L 4 EPA 624.1 0 ML
0.71 ug/L m MDL
Methyl chloride < ug/L < ug/L 4 EPA 624.1 0.89 ug/L m MDL
El Mt.
Methylene chloride < ug/L < ug/L 4 EPA 624.1 0.36 ug/L m MDL
ML
1,1,2,2-tetrachloroethane < ug/L < ug/L 4 EPA 624.1 0.34 ug/L m MDL
0 ML
Tetrachlor0ethylene < ug/L < ug/L 4 EPA 624.1 0.4 ug/L m MDL
Toluene < ug/L < ug/L 4 EPA 624.1 0.38 ug/L D MMDL
ML
1,1,1-trichloroethane < ug/L . < ug/L 4 EPA 624.1 0.35 ug/L 0 MDL
ML
1,1,2-trichloroethane < ug/L < ug/L 4 EPA 624.1 0.22 ug/L 21 MDL
EPA Form 3510-2A(Revised 3-19) Page 18

•
EPA Identification Number NPDES Permit Number Facility Name Outran Number Form Approved 03/05119
NC0069841 Crooked Creek W WTP#2 OMB No.2040-0004
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Value Units Value Units Number of Method' (include units)
Samples
Trichloroethylene < ug/L < ug/L 4 EPA 624.1 0.43 ug/L 0 MMDL L
0 ML
Vinyl chloride < ug/L < ug/L 4 EPA 624.1 1.09 ug/L O MDL
•
Acid-Extractable Compounds
ML
p-chloro-m-cresol < ug/L < ug/L 3. EPA 625.1 1.03 ug/L 0 MDL
2-chlorophenol < ug/L < ug/L 4 EPA 625.1 1.19 ug/L 0 MDL
ML
2,4-dichlorophenol < ug/L < ug/L 4 EPA 625.1 1.13 ug/L 0 MDL
2,4-dimethylphenol < ug/L < ug/L 4 EPA 625.1 1.16 ug/L 0 MMDL
0 ML
4,6-dinitro-o-cresol < ug/L < ug/L 3 EPA 625.1 0.88 ug/L O MDL
0 ML
2,4-dinitrophenol < ug/L < ug/L 4 EPA 625.1 5.84 ug/L m MDL
0 ML
2-nitrophenol < ug/L < ug/L 4 EPA 625.1 1.29 ug/L m MDL
4-nitrophenol < ug/L < ug/L 4 EPA 625.1 1.07 ug/L 13 ML
21 MDL
0 ML
Pentachlorophenol < ug/L < ug/L 4 EPA 625.1 3.15 ug/L 0 MDL
Phenol < ug/L < ug/L 4 EPA 625.1 1.12 ug/L 0 MMDL
ML
2,4,6-trichlorophenol < ug/L < ug/L 4 EPA 625.1 0.9 ug/L 0 MDL
Base-Neutral Compounds
Acenaphthene < ug/L < ug/L 4 EPA 625.1 0.89 ug/L 0 MDL
ML
Acenaphthylene < ug/L < ug/L 4 EPA 625.1 0.89 ug/L 0 MDL
Anthracene < ug/L < ug/L 4 EPA 625.1 0.74 ug/L 0 MDL
ML
Benzidine < ug/L < ug/L 4 EPA 625.1 1 ug/L 0 MDL
ML
Benzo(a)anthracene < ug/L < ug/L 4 EPA 625.1 0.67 ug/L 0 MDL
Benzo(a)pyrene < ug/L < ug/L 4 EPA 625.1 ML
1.62 ug/L 0 MDL
3,4-benzofuoranthene < ug/L < ug/L 4 EPA 625.1 ML
1.74 ug/L 0 MDL
EPA Form 3510-2A(Revised 3-19) Page 19

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method, (include units)
Value Units Value Units Samples
o ML
Benzo(ghi)perylene < ug/L < ug/L 4 EPA 625.1 1.51 ug/L 0 MDL
0 ML
Benzo(k)fluoranthene < ug/L v ug/L 4 EPA 625.1 1.74 ug/L O MDL
ML
Bis(2-chloroethoxy)methane < ug/L < ug/L 4 EPA 625.1 1.36 ug/L 0 MDL
0 ML
Bis(2-chloroethyl)ether < ug/L < ug/L 4 EPA 625.1 1.21 ug/L O MDL
ML
Bis(2-chloroisopropyl)ether < ug/L < ug/L 4 EPA 625.1 1.32 ug/L 0 MDL
ML
Bis(2-ethyihexyl)phthalate 11 ug/L < ug/L 4 EPA 625.1 9.63 ug/L 0 MDL
ML
4-bromophenyl phenyl ether < ug/L < ug/L 4 EPA 625.1 0.81 ug/L 2 MDL
0 ML
Butyl benzyl phthalate < ug/L < ug/L 3 EPA 625.1 0.84 ug/L 2 MDL
ML
2-chloronaphthalene < ug/L < ug/L 4 EPA 625.1 0.78 ug/L 0 MDL
ML
4-chlorophenyl phenyl ether < ug/L < ug/L 4 EPA 625.1 0.76 ug/L 0 MDL
ML
Chrysene < ug/L < ug/L 4 EPA 625.1 0.67 ug/L 0 MDL
0 ML
di-n-butyl phthalate < ug/L < ug/L 3 EPA 625.1 1.59 ug/L m MDL
ML
di-n-octyl phthalate < ug/L <. ug/L 3 EPA 625.1 1.16 ug/L 0 MDL
ML
Dibenzo(a,h)anthracene < ug/L < ug/L 4 EPA 625.1 1.5 ug/L 0 MDL
ML
1,2-dichlorobenzene < ug/L < ug/L 4 EPA 625.1 1.11 ug/L 0 MDL
ML
1,3-dichlorobenzene < ug/L < ug/L 4 EPA 625.1 1.11 ug/L 0 MDL
ML
1,4-dichlorobenzene < ug/L < ug/L 4 EPA 625.1 1.11 ug/L 0 MDL
3,3-dichlorobenzidine < ug/L < ug/L 4 EPA 625.1 ML
1.02 ug/L 0 MDL
Diethyl phthalate < ug/L < ug/L 4 EPA 625.1 28.15 updi 0 ML
0 MDL
ML
Dimethyl phthalate < ug/L < ug/L 4 EPA 625.1 0.77 ug/L 0 MDL
ML
2,4-dinitrotoluene < ug/L < ug/L 4 EPA 625.1 0.79 ug/L 0 MDL
ML
2,6-dinitrotoluene < ug/L < ug/L 4 EPA 625.1 0.77 ug/L 0 MDL
EPA Form 3510-2A(Revised 3-19) Page 20

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method1 (include units)
Value Units Value Units Samples
o ML
1,2-diphenylhydrazine < ug/L < ug/L 4 EPA 625.1 0.98 ug/L m MDL
ML
Fluoranthene < ug/L < ug/L 4 EPA 625.1 0.75 ug/L 0 MDL
0 ML
Fluorene < ug/L < ug/L 4 EPA 625.1 0.82 ug/L p MDL
Hexachlorobenzene < ug/L < ug/L 4 EPA 625.1 0.78 ug/L 0 MDL
ML
Hexachlorobutadiene < ug/L < ug/L 4 EPA 625.1 1,47 ug/L 0 MDL
Hexachlorocyclo-pentadiene < ug/L < ug/L 4 EPA 625.1 1.95 ug/L 0 MDL
Hexachloroethane < ug/L < ug/L 4 EPA 625.1 1.14 ug/L 21 MDL
ML
Indeno(1,2,3-cd)pyrene < ug/L < ug/L 4 EPA 625.1 1.42 ug/L 0 MDL
ML
Isophorone < ug/L < ug/L 4 EPA 625.1 1.17 ug/L 0 MDL
ML
Naphthalene < ug/L < ug/L 4 EPA 625.1 1.42 ug/L 0 MDL
ML
Nitrobenzene < ug/L < ug/L 4 EPA 625.1 1.17 ug/L 0 MDL
N-nitrosodi-n-propylamine < ug/L < ug/L 4 EPA 625.1 1.22 ug/L 0 MDL
0 ML
N-nitrosodimethylamine < ug/L < ug/L 4 EPA 625.1 1.24 ug/L m MDL
ML
N-nitrosodiphenylamine < ug/L < ug/L 4 EPA 625.1 0.8 ug/L 0 MDL
Phenanthrene < ug/L < ug/L 4 EPA 625.1 0.82 ug/L 0 MDL
Pyrene < ug/L < ug/L 4 EPA 625.1 0.68 ug/L 0 MMDL
1,2,4-trichlorobenzene < ug/L < ug/L 4 EPA 625.1 1.49 ug/L m MMDL
I Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR Chapter I,Subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2A(Revised 3-19) Page 21

This page intentionally left blank.

NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
TABLE D.ADDITIONAL POLLUTANTS AS REQUIRED BY NPDES PERMITTING AUTHORITY
Maximum Daily Discharge Average Daily Dischar a Analytical ML or MDL
Pollutant Number of
(list) Value Units Value Units Samples Methods (include units)
El No additional sampling is required by NPDES permitting authority.
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
El ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
•
❑MDL
El ML
❑MDL
❑ML
0 MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
I Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or required
under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2A(Revised 3-19) Page 23

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Oueall Number Form Approved 03/05/19
NC0069841 Crooked Creek WWTP ff2 OMB No.2040-0004
TABLE E.EFFLUENT MONITORING FOR WHOLE EFFLUENT TOXICITY
The table provides response space for one whole effluent toxicity sample.Copy the table to report additional test results.
Test Information
Test Number 1 Test Number 2 Test Number 3
Test species Ceriodaphnia dubia Ceriodaphnia dubia Ceriodaphnia dubia
Age at initiation of test 15.4 20.5 21.6
Outfall number o01 001 001
Date sample collected 02/01/2021 05/03/2021 08/02/2021
Date test started 02/03/2021 05/05/2021 08/04/2021
•
Duration 7 days 7 days
Toxicity Test Methods
Test method number EPA-821-R-03-013:1002 EPA-821-R-03-013:1002 EPA-821-R-03-013:1002
Manual title
Edition number and year of publication
Page number(s)
Sample Type
Check one: El Grab ❑ Grab El Grab
0 24-hour composite DI 24-hour composite 0 24-hour composite
Sample Location
Check one: ❑ Before Disinfection ❑ Before Disinfection El Before disinfection
❑✓ After Disinfection ❑✓ After Disinfection 0 After disinfection
❑After Dechlorination ❑After Dechlorination ❑After dechlorination
Point in Treatment Process •
Describe the point in the treatment process Sample collected downstream from uv Sample collected downstream from UV Sample collected downstream from UV
at which the sample was collected forOf each disinfection but upstream from cascade disinfection but u stream from cascade
test. disinfection but upstream from cascade P P
aeration. aeration. aeration.
Toxicity Type
Indicate for each test whether the test was ❑Acute ❑Acute ❑Acute
performed to asses acute or chronic toxicity, LIU Chronic 0 Chronic El Chronic
Of both.(Check one response.)
❑Both , ❑Both ❑Both
EPA Form 3510-2A(Revised 3-19) Page 25

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC0069841 Crooked Creek WWiP#2 OMB No.2040-0004
TABLE E.EFFLUENT MONITORING FOR WHOLE EFFLUENT TOXICITY
The table provides response space for one whole effluent toxicity sample.Copy the table to report additional test results.
Test Number 1 Test Number 2. Test Number 3
Test Type
Indicate the type of test performed.(Check one 0 Static ❑Static ❑ Static
response.)
❑Static-renewal ❑Static-renewal ❑✓ Static-renewal
❑ Flow-through 0 Flow-through 0 Flow-through
Source of Dilution Water
Indicate the source of dilution water.(Check 0 Laboratory water 0 Laboratory water ❑ Laboratory water
one response.)
© Receiving water 0 Receiving water ❑✓ Receiving water
If laboratory water,specify type. •
If receiving water,specify source. Lake Brandt Lake Brandt Lake Brandt
Type of Dilution Water
Indicate the type of dilution water.If salt 0 Fresh water ❑✓ Fresh water ✓❑ Fresh water
water,specify"natural"or type of artificial
sea salts or brine used. ❑ Salt water(specify) 0 Salt water(specify) ❑Salt water(specify)
Percentage Effluent.Used •
Specify the percentage effluent used for all D,90 0,90 0,90
concentrations in the test series.
Parameters Tested
Check the parameters tested. ❑✓ pH ❑Ammonia 0 pH 0 Ammonia ❑d pH 0 Ammonia
0 Salinity L Dissolved oxygen 0 Salinity ©Dissolved oxygen ❑Salinity ® Dissolved oxygen
❑x Temperature 0 Temperature 1 El Temperature
Acute Test Results
Percent survival in 100%effluent % % %
LCso '
95%confidence interval % %
Control percent survival % % %
EPA Form 3510-2A(Revised 3-19) Page 26

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC0069841 Crooked Creek W WTP#2 OMB No.2040-0004
TABLE E.EFFLUENT MONITORING FOR WHOLE EFFLUENT TOXICITY
The table provides response space for one whole effluent toxicity sample.Copy the table to report additional test results.
Test Number 1 Test Number 2 Test Number 3
Acute Test Results Continued
Other(describe)
Chronic Test Results
NOEC
•
IC25
Control percent survival 100 % 100 % 100 %
Other(describe)
Quality ControllQuality Assurance
Is reference toxicant data available? ❑Yes No ❑Yes ❑✓ No ❑Yes ✓❑ No
Was reference toxicant test within ❑Yes ❑ No ❑Yes ❑ No ❑Yes ❑No
acceptable bounds?
What date was reference toxicant test run
(MM/DDIYYYY)?
Other(describe)
EPA Form 3510-2A(Revised 3-19) Page 27

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name OuttaII Number Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
TABLE E.EFFLUENT MONITORING FOR WHOLE EFFLUENT TOXICITY
The table provides response space for one whole effluent toxicity sample.Copy the table to report additional test results.
Test Information
Test Number 4 Test Number Test Number
Test species Fathead minnow(Pimephales prmelas)
Age at initiation of test 23.9
Outfall number 001
Date sample collected 10/31/2021
Date test started 11/02/2021
Duration 7 days
Toxicity Test Methods
Test method number EPA-821-R-02-013
Manual title
Edition number and year of publication _
Page number(s)
Sample Type
Check one: ❑ Grab ❑Grab ❑ Grab
0 24-hour composite ❑24-hour composite 0 24-hour composite
Sample Location
Check one: ❑ Before Disinfection ❑ Before Disinfection ❑ Before disinfection
El After Disinfection ❑After Disinfection ❑After disinfection
❑After Dechlorination ❑After Dechlorination ❑After dechlorination
Point in Treatment Process
Describe the point in the treatment process
at which the sample was collected for each Sample collected downstream from UV
test. disinfection but upstream from cascade
aeration.
Toxicity Type
Indicate for each test whether the test was 0 Acute 0 Acute ❑Acute
performed to asses acute or chronic toxicity,
or both.(Check one response.) El Chronic El Chronic ❑Chronic
❑Both ❑Both ❑Both
EPA Form 3510-2A(Revised 3-19) Page 25

•
EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
TABLE E.EFFLUENT MONITORING FOR WHOLE EFFLUENT TOXICITY
The table provides response space for one whole effluent toxicity sample.Copy the table to report additional test results.
Test Number 4 Test Number Test Number
Test Type
Indicate the type of test performed.(Check one ❑ Static El Static El Static
response.)
0 Static-renewal ❑Static-renewal ❑Static-renewal
0 Flow-through ❑ Flow-through 0 Flow-through
Source of Dilution Water
Indicate the source of dilution water.(check ❑Laboratory water 0 Laboratory water 0 Laboratory water
one response.)
©Receiving water 0 Receiving water 0 Receiving water
If laboratory water,specify type.
If receiving water,specify source. Lake Brandt
Type of Dilution Water
Indicate the type of dilution water.If salt El Fresh water ❑ Fresh water 0 Fresh water
water,specify°natural°or type of artificial
sea salts or brine used. ElSalt water(specify) ElSalt water(specify) ❑ Salt water(specify)
Percentage Effluent Used •
Specify the percentage effluent used for all
concentrations in the test series. D,22,45,75,90,100
Parameters Tested
Check the parameters tested. El pH ❑Ammonia ❑pH ❑Ammonia ❑pH ❑Ammonia
0 Salinity © Dissolved oxygen 0 Salinity ❑ Dissolved oxygen ❑ Salinity ❑ Dissolved oxygen
El Temperature ❑Temperature ❑Temperature
Acute Test Results
Percent survival in 100%effluent
LCso
•
95%confidence interval
Control percent survival
EPA Form 3510-2A(Revised 3-19) Page 26

•
EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NC0069841 Crooked Creek W WTP#2 OMB No.2040-0004
TABLE E.EFFLUENT MONITORING FOR WHOLE EFFLUENT TOXICITY
The table provides response space for one whole effluent toxicity sample.Copy the table to report additional test results.
Test Number 4 Test Number Test Number
Acute Test Results Continued
Other(describe)
Chronic Test Results
NOEC 100 %
IC25
Control percent survival
Other(describe)
Quality ControllQuality Assurance
Is reference toxicant data available? 0 Yes ✓❑ No 0 Yes ❑ No ❑ Yes 0 No
Was reference toxicant test within
acceptable bounds? El Yes El No ❑Yes 0 No El Yes ❑ No
What date was reference toxicant test run
(MM/DDIYYYY)?
Other(describe)
EPA Form 3510-2A(Revised 3-19) Page 27

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
e #2 OMB No.2040-0004
NCD069841 Crooked Creek WWTP
TABLE F.INDUSTRIAL DISCHARGE INFORMATION
Response space is provided for three Sills.Copy the table to report information for additional Sills.
SIU SIU SIU
Name of SIU
•
Mailing address(street or P.O.box)
City,state,and ZIP code
Description of all industrial processes that affect
or contribute to the discharge.
List the principal products and raw materials that
affect or contribute to the SIU'sdischarge.
Indicate the average daily volume of wastewater
discharged by the SIU. gpd gpd gpd
How much of the average daily volume is
attributable to process flow? gpd gpd gpd
How much of the average daily volume is
attributable to non-process flow? gpd gpd gpd
Is the SIU subject to local limits?
❑Yes LI No ❑Yes ❑ No ❑Yes ❑ No
Is the SIU subject to categorical standards?
❑Yes ❑ No ❑Yes ❑ No ❑Yes ❑No
EPA Form 3510-2A(Revised 3-19) Page 29
•

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NC0069841 Crooked Creek WWTP#2 OMB No.2040-0004
TABLE F.INDUSTRIAL DISCHARGE INFORMATION
Response space is provided for three SIUs.Copy the table to report information for additional Sills.
SIU_ SIU_ SIU
Under what categories and subcategories is the •
SIU subject?
Has the POTW experienced problems(e.g.,
upsets,pass-through interferences)in the past 4.5 ❑Yes ❑ No ❑Yes ❑ No ❑ Yes ❑ No
years that are attributable to the SIU?
If yes,describe.
EPA Form 3510-2A(Revised 3-19) Page 30

;&..-7t.%;-.... fitrA."__Aop • ,k•-• , . 1 -, , ,-. , ..,N .....,,,,- . r
YPDRBA Station (upstream) 4i, '`r- ::met y ' ii—a. , '1
19 -3 i . ... ,, $ ,, 3
;',fi" ....,„A _V . �_ (0 • • . )A, YPDRBA Station (downstream)
•
J`'•''c • Y,. 44,_:,t �.r •' (.4 r--1 _. .` `1• _> 6 ' ' ,/ _,;• .+. '--
,J•;
• , •Y
. 1'"
.,... • ---vr\
�! • .' .• t_ •jam. v •Fr. •�� ( !% . '�. C'im:� �. l�l.
.K • ,f, II!'F.. — 1 r
i C. �•'0 '',,.. • '`" Outfall001 J LI t _ A,, ji7 '
r - —5
, i , ,. ., ,....,,,
., .•
,,,,2 „.,
• ., ,_, :.,.
.. . . .
r- . 4 .r-N, ..' ." .• • , - • 2i4LIP' , V t,,
(\....,,S '
rr . '• • ,�yry • # g•
\ .,..,.....1,.,.., ., „...9 „.. , A A ,-- • - . -0 . •h'itil -_:.. , , 1
- , rf, -- •; -Mr, �' - I. l ,W ( ..:fit'_ •. .,. t,�,s.\� Y
•
)` Crooked Creek WTP it`:« \\ • 'is
\ —
sss,„.
--A\-- '"-\ .....t' 4•
---10 .e . - -) - , . • . . - —
1 ,-, 4.: ., ... ,,_ .,... ,
_ . „
. , 1514. 0 • <.A .., s..., ,
""�•\ ; ntlFc-e" it,
/ . • l/ -green �
Q,4�ni .� J •.' tti4
t Eder ll
•f• F F f( Q j;'",� -_• Ccp,riget:b 201 Fiatior�Geograhic Society, i-tubed '� -
Crooked Creek WWTP #2 - NC0069841 Facility
Location
USGS Quad Names:Bakers Receiving Stream:N.Fork
(Outfall),Matthews(Facility) Crooked Creek
Lat.: 35°05'47"N Stream Class:C Union County
Long.:80°35'53"W Sub-basin:03-07-12 North Map not to scale

Legend:
FBW =Filter Backwash
RAS =Return Activated Sludge
WAS =Waste Activated Sludge
MLSS =Mixed Liquor Suspended Solids
® =Sampling Point
3
1 O MLSS
Influent O Coarse Grit Equalization Oxidation Ditch Distribution
PumpStation Distribution Box Oxidation Ditches Box
Screens Removal i
Influent ( !J ♦ 4 -�, _ _ .., t
)a{ K mac;
RAS
Grh •
Crooked O 23
Creek Tertiary
Filters
'ram ; _;^ t / ° t
Cascade UV Disinfection -'4;.�`r
FBW
Aerator
JI I I I ♦ A
l , C RAS
Pump Station
Chlorine Contact
(Backup) Pump Station D
Supernatant
WAS
Q Pump Station
0104-- 1_.*----404---- V;
Sludge
Aerobic Transfer Aerated
Digestion Station Solids Holding
To Land Tank
Application
* cillit Figure 1
WWTP Process Flow Diagram
Union County,NC
Crooked Creek WWTP
NC0069841
000314524101 Fi0on 01 Crooked Creek.W