NC0083348_Draft Fact Sheet_20240806

NCDEQ /DWR/NPDES
EXPEDITED FACT SHEET - NPDES PERMIT RENEWAL
NPDES Permit NCO083348
Caroline Robinson/Compliance&Expedited Permitting Unit/caroline.robinson(a deg.nc.gov /July 2024
FACILITY INFORMATION
Applicant/Facility Name Town of Smithfield (Walter Credle, Utilities Director)
Smithfield WTP
Applicant Address/MailingAddress PO Box 761, Smithfield, NC 27577
Facility Physical Address 515 North Second Street, Smithfield, NC 27577
Max Monthly Average Flow MGD 0.163 MGD
Effluent Flow Limit(MGD)
(Max Monthly Average Flow+15% 0.187 MGD
Buffer)
Conventional Water Treatment Plant; Filter backwash water,
Type of Waste filter to wastewater and water from sludge dewatering system
(source water is the surface water of the Neuse River
Facility Class PC-1 County Johnston
Permit Status Renewal Regional Office I RRO
STREAM CHARACTERISTICS
Receiving Stream Buffalo Creek Stream Classification NSW
Classification
Stream Segment 27-42 Outfall Lat. 350 31' 06"N
7Q10 - Summer(cfs) 0 Outfall Long. 780 20' 41" W
7Q10 - Winter(cfs) 0 Drainage basin Neuse River
30 2 cfs 0 Subbasin 03-04-02
Average Flow cfs 0 HUC 030202011105
IWC (%) 100%(summer)/100% 303(d) List No
(winter)
BASIC INFO FOR EXPEDITED PERMIT RENEWAL
Does permit need Daily Max NH3 limits? No,the 2020 WTP strategy does not require limits for
Conventional WTPs, only monitoring is required.
Does permit need TRC limits/footnote? No —Already resent in permit.
Does permit have toxicity testing? Yes, chronic toxicity permit pass/fail limit(quarterly)
Yes—Chronic Toxicity Permit Limit(Quarterly) and
Does permit have any Special Conditions? permit Re-Opener: Whole Effluent Toxicity
Does permit have instream monitoring? Yes—U for Hardness— Total as CaCO3 (mg/L)4
New expiration date: July 31, 2029
FACILITY SUMMARY
Town of Smithfield operates a conventional water treatment plant.The Smithfield WTP is a minor facility
(flow<I MGD)with a design capacity of 6.2 MGD,a maximum monthly average wastewater discharge of
approximately 0.163 MGD,and an effluent flow discharge limit of 0.187 MGD. Discharge occurs every
day for 2.5 hours. Water source is Neuse River. The receiving stream is Buffalo Creek. The WTP was
originally permitted August 27, 1993. This facility utilizes the following treatment components:
• Water storage reservoir
• Rapid mix chamber for alum and NaOH addition
• Four flocculators
Fact Sheet for Permit Renewal
July 2024-NPDES Permit NCO083348-Page 1

• Three settling basins
• Three multi-media filters
• Filter backwash tank
• Two clearwells
• Sludge holding basin
• Screw press for sludge thickening
Chemical usage consists of:
• Powdered activated carbon
• Alum/aluminum sulfate
• Sodium hydroxide
• Chlorine
• Ammonia nitrogen/chloramines
• Tetrapotassium pyrophosphate
• Calcium thiosulfate
RENEWAL SUMMARY
This renewal contains the following changes:
➢ Added the chemical usage list at the water treatment plant to the Supplement to Permit Cover Sheet
➢ Updated the components list on the Supplement to Permit Cover Sheet.
➢ Updated footnotes to the effluent table in Section A. (1.).
➢ Removed the weekly average limits column from the effluent table in Section A. (L).
➢ Added effluent Hardness and instream Hardness,upstream of the facility's discharge,monitoring to
the table in Section A. (1)with corresponding footnotes.These parameters were added to comply
with the current NCDEQ water treatment plant strategy.
➢ Iron no longer has a state water quality standard and therefore monitoring for this parameter has
been removed from the permit.
➢ Manganese no longer has a state water quality standard and therefore monitoring forthis parameter
has been removed from the permit.
➢ Fluoride monitoring was also removed from the permit. The 2018 permit renewal factsheet
mentions that the permittee stopped using Fluoride, the Permittee marked Fluoride as believed
absent on the permit renewal application, and Fluoride is not listed as a chemical additive on the
plant schematic.
➢ Reporting for Total Nitrogen(TN)now includes the constituent parameters used in calculating TN.
Total Kjeldahl Nitrogen(TKN)and Nitrate+Nitrite Nitrogen(NO3-N+NO2-N)have been added
to the effluent table in Section A. (1)with a corresponding footnote. The Sample Type for Total
Nitrogen has been updated from "Grab" to "Calculated".
➢ Added an effluent flow limit to the effluent table in Section A. (1) to comply with the current
NCDEQ water treatment plant strategy. The Division has determined that the volume of Water
Treatment Plant(WTP) discharges has the potential to impact receiving waters and should be
controlled statewide. The Division is moving to reinstate limits in permit renewals and include
limits for new WTP permits. A flow limit of 0.187 MGD has been added to this permit
➢ Added parameter units to the effluent table in Part 1. Section A. (L).
➢ Added the eDMR codes for every parameter to the effluent table in Part 1. Section A. (1.).
➢ Whole Effluent Toxicity testing has been changed from monitoring to a Pass/Fail limit per the
current water treatment plant guidance for conventional treatment systems. Section A. (1) and
Section A. (2)have been updated accordingly.
➢ Added Special Condition A. (3) Permit Re-Opener: Whole Effluent Toxicity in Part 1.
➢ Updated eDMR language for electronic data submission in Part 1. A. (4).
➢ Updated the map.
Fact Sheet for Permit Renewal
July 2024-NPDES Permit NC0083348-Page 2

COMPLIANCE HISTORY
Smithfield WTP has not had any enforcements on record since the permit became effective in April 2019.
The facility has been issued three proceed to NOVs for Total Suspended Solids frequency monitoring
violations and an aquatic toxicity permit limit violation since the permit became effective in April 2019.
Most recent inspection (February 2019) showed the facility to be in compliance.
STREAM FLOW DISCREPANCIES AND CONFIRMED OUTFALL POINT
Winter and summer 7Q10 values of 0 were used in the 2013 and 2018 permit renewals: however, in BIMS
the 7Q10 is listed as 175 summer/155 winter, 30Q2 is listed as 260 and average CFS is listed at 0.95.
During the 2018 permit renewal the outfall location was confirmed with the permittee to be located further
from the Neuse River than previously listed in BIMs and the outfall location was confirmed to be to Buffalo
Creek at 35.518302 N,-78.344840 W. The 7Q 10 values were corrected in BIMs to reflect the flow value
of the Buffalo Creek and historical permit renewals;however,it is suggested that Smithfield WTP request
updated flow data from USGS for the outfall location,as it may help with future permit limits in the RPA,
future permit renewals,and may more accurately represent the flow of this portion of the Buffalo Creek.
Smithfield WTP should submit new flow data from the USGS to the NCDEQ with their permit application
for the next permit renewal in 2029.
WHOLE EFFLUENT TOXICITY (WET) TESTING
In accordance with current strategies designating this facility as a conventional water treatment plant,
WET testing is required in this permit as freshwater Chronic [TGP3B] Pass/Fail Quarterly testing with
Ceriodaphnia dubia at an effluent concentration of 90%. Whole Effluent Toxicity testing has been
changed from monitoring to a Pass/Fail limit in this permit renewal,per the current water treatment plant
guidance for conventional treatment systems. This facility has failed 9 out of the past 12 toxicity tests,
therefore a re-opener clause is being added during this renewal.
Smithfield bVTP,Town of NCO083348 County: Johnston Region: RRO Basin: NEU02 Jan Apr Jul Oct SOC JOC:
Ceri7dPF Begin: 9/1/2013 Chr Monit:90% NonComp: 7Q30: PF: 0.3 IWC: Freq: Q
J F M A M J J A S O N D
2020 Fail - - Fail - - Fail - - Fail - -
.21 Fail - - Fail - - Fall - - Fail - -
2022 Fail - - Pan - - Fall - - Fail - -
202a P.. - - Pau - - FAI NR - - Fa0 - -
.21 Fml - - - - - - - - - -
NCG59 GENERAL PERMIT ELIGIBILITY (FOR CONVENTIONAL & GREENSAND WTPS)
• They've failed 75% of TOX tests within the last 3 years (Apr 2021-Jan 2024), the most recent
failed test occurring in January 2024 —ineligible
• Conclusion: Ineligible for NCG59 General Permit.
REASONABLE POTENTIAL ANALYSIS
The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality
standards,a statistical evaluation that is conducted during every permit renewal utilizing the most recent
effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC
RPA procedure utilizes the following: 1)95%Confidence Level/95% Probability; 2) assumption of zero
background; 3)use of Jh detection limit for"less than" values; and 4) streamflows used for dilution
consideration based on 15A NCAC 213.0206. Effective April 6, 2016,NC began implementation of
dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of
Instream Dissolved Metals Standards, dated June 10, 2016.
A reasonable potential analysis(RPA)was conducted on effluent data collected between December 2019
and March 2024.Per the new guidance for water treatment plants, a flow (Qw) of 0.187 MGD was used.
This flow is based on the maximum,monthly average flow during the past three years, with a 15% reserve
capacity added and rounded to three significant figures.
Fact Sheet for Permit Renewal
July 2024-NPDES Permit NCO083348-Page 3

Based on this analysis, the following permitting actions are proposed for this permit:
• Copper—no reasonable potential to exceed water quality standards and no detects;monitoring kept
at quarterly as facility is not measuring and reporting data down to the required practical
quantitation limit(PQL)for Total Copper,which is 2 µg/L(per the Inorganic Chemistry Branch of
the Division of Water Resources Water Sciences Section). Monitoring data should be reportable
down to this level.
• Fluoride—no reasonable potential to exceed water quality standards;predicted max <50% of
allowable concentration; monitoring removed from permit for the following reasons. The 2018
permit renewal factsheet mentions that the permittee stopped using Fluoride,the Permittee marked
Fluoride as believed absent on the permit renewal application, and Fluoride is not listed as a
chemical additive on the plant schematic.
Fact Sheet for Permit Renewal
July 2024-NPDES Permit NCO083348-Page 4

NCO083348 Flow Limit Calc 2024
Month/Year Average Flow
(MGD)
May 2021 0.0921 Maximum Monthly Avq Flow (3-years): 0.1626 MGD
Jun 2021 0.07683333 15% Reserve Capacity: 0.02439 MGD
Jul 2021 0.07103333 Flow Limit: 0.187 MGD
Auq 2021 0.07103226
Sep 2021 0.07817241
Oct 2021 0.07967742
Nov 2021 0.13428571
Dec 2021 0.1626
Jan 2022 0.14456667
Feb 2022 0.0855
Mar 2022 0.09625806
Apr 2022 0.09566667
May 2022 0.07613333
Jun 2022 0.07856667
Jul 2022 0.0945
Auq 2022 0.0946129
Sep 2022 0.08717241
Oct 2022 0.11222581
Nov 2022 0.13996429
Dec 2022 0.15412903
Jan 2023 0.10993548
Feb 2023 0.09942857
Mar 2023 0.10580645
Apr 2023 0.12483333
May 2023 0.0933871
Jun 2023 0.12053333
Ju12023 0.14345161
Auq 2023 0.10674194
Sep 2023 0.08416667
Oct 2023 0.08225806
Nov 2023 0.08603448
Dec 2023 0.08946429
Jan 2024 0.09637931
Feb 2024 0.09827586
Mar 2024 0.09145161

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information Table 2. Parameters of Concern
❑CHECK IF HQW OR ORIN WQS Name WQs Type Chronic Modifier Acute PQL Units
Facility Name Smithfield WTP Par01 Arsenic Aquactic Life C 150 FW 340 ug/L
WWTP/WTP Class PC-1 Par02 Arsenic Human Health C 10 HH/WS N/A ug/L
Water Supply
NPDES Permit NCO083348 Par03 Beryllium Aquatic Life NC 6.5 FW 65 ug/L
Outfall Ouffall001 Par04 Cadmium Trout NC 1.0015 TR 1.9412 ug/L
Flow,Qw(MGD) 0.187 Paro5 Chlorides Aquatic Life NC 230 FW mg/L
Receiving Stream Buffalo Creek Par6 Chlorinated Phenolic Compounds Water supply NC 1 A ug/L
HUC Number 30202011105 Par07 Total Phenolic Compounds Aquatic Life NC 300 A ug/L
Stream Class C;NSW Par08 Chromium III Aquatic Life NC 117.7325 FW 905.0818 ug/L
❑Apply WS Hardness WQC Par09 Chromium VI Aquatic Life NC 11 FW 16 pg/L
7Q10s(cfs) 0.00 Par10 Chromium,Total Aquatic Life NC N/A FW N/A pg/L
7Q10w(cfs) 0.00 Par11 Copper Aquatic Life NC 7.8806 FW 10.4720 ug/L
30Q2(cfs) 0.00 Par12 Cyanide Aquatic Life NC 5 FW 22 10 ug/L
QA(cfs) 0.00 Par13 Fluoride Aquatic Life NC 1,800 FW ug/L
1Q10s(cfs) 0.00 Par14 Lead Aquatic Life NC 2.9416 FW 75.4871 ug/L
_Effluent Hardness____ 25 mg/L(Avg) Par15 Mercury Aquatic Life NC 12 FW 0.5 ng/L
Upstream Hardness 25 mg/L(Avg) Par16 Molybdenum Human Health NC 2000 HH ug/L
— ---------- — — —
_Combined Hardness Chromi .._------- 25 mg/L--- I Par17 Nickel Aquatic Life NC 37.2313 FW 335.2087 pg/L
Combined Hardness Acute 25 mg/L I Par18 Nickel Water supply NC 25.0000 WS N/A pg/L
--------------
Data Source(s) Par19 Selenium Aquatic Life NC 5 FW 56 ug/L
❑CHECK TO APPLY MODEL Par20 Silver Aquatic Life NC 0.06 FW 0.2964 ug/L
Par21 Zinc Aquatic Life NC 126.7335 FW 125.7052 ug/L
Par22
Par23
Par24
83348 FW RPA, input
6/26/2024

Smithfield WTP I Outfall Outfall 001
NCO083348 Freshwater RPA- 95% Probability/95% Confidence Using Metal Translators Qw = 0.187 MGD
MAXIMUM DATA POINTS = 58
Qw(MGD)= 0.1870 WWTP/WTP Class: PC-1 COMBINED HARDNESS(mg/L)
1Q10S(cfs)= 0.00 IWC% @1Q10S = 100 Acute=25mg/L
7Q10S(cfs)= 0.00 IWC% @ 7QI OS= 100 Chronic=25 mg/L
7QIOW(cfs)= 0.00 IWC%@ 7Q10W= 100
30Q2(cfs)= 0.00 IWC%@ 30Q2= 100
Avg.Stream Flow,QA(cfs)= 0.00 IW%C @ QA= 100
Receiving Stream: Buffalo Creek HUC 30202011105 Stream Class: C;NSW
PARAMETER NC STANDARDS OR EPA CRITERIA J REASONABLE POTENTIAL RESULTS RECOMMENDED ACTION
TYPE ApliedChronic Standa d Acute o D n #Det. Max Pred Cw Allowable Cw
Acute: 10.47 No detects
Copper INC 7.8806 FW 10.4720 ug/L 17 0 5.00
Chronic: 7.88 No detects
NO DETECTS Max MDL=10
Acute: NO WQS No RP, Predicted Max<50%of Allowable Cw-No
Fluoride NC 1800 FW ug/L 51 13 856.0 Monitoring required
Chronic: 1,800.0 No RP, Predicted Max<50%of Allowable Cw-No
No value>Allowable Cw Monitoring required
83348 FW RPA,rpa
Page 1 of 1 6/26/2024

REASONABLE POTENTIAL ANALYSIS
Pall Use"PASTE SPECIAL Par13 Use"PASTE SPECIAL
Copper Values"then"COPY". Fluoride Values"then"COPY".
Maximum data points Maximum data points
=58 =58
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 1/16/2020 < 10 5 Std Dev. 0.0000 1 12/5/2019 < 100 50 Std Dev. 117.1548
2 4/16/2020 < 10 5 Mean 5.0000 2 1/16/2020 < 100 50 Mean 85.4902
3 7/16/2020 < 10 5 C.V. 0.0000 3 2/6/2020 110 110 C.V. 1.3704
4 10/15/2020 < 10 5 n 17 4 3/5/2020 < 100 50 n 51
5 1/14/2021 < 10 5 5 4/16/2020 < 100 50
6 4/22/2021 < 10 5 Mult Factor= 1.00 6 5/7/2020 < 100 50 Mult Factor= 1.07
7 7/22/2021 < 10 5 Max.Value 5.00 ug/L 7 6/4/2020 < 100 50 Max.Value 800.0 ug/L
8 10/14/2021 < 10 5 Max.Pred Cw 5.00 ug/L 8 7/16/2020 < 100 50 Max.Pred Cw 856.0 ug/L
9 1/13/2022 < 10 5 9 8/5/2020 < 100 50
10 4/14/2022 < 10 5 10 9/3/2020 < 100 50
11 7/21/2022 < 10 5 11 10/15/2020 < 100 50
12 10/13/2022 < 10 5 12 11/5/2020 < 100 50
13 1/26/2023 < 10 5 13 12/3/2020 < 100 50
14 4/6/2023 < 10 5 14 1/14/2021 < 100 50
15 7/20/2023 < 10 5 15 2/4/2021 < 100 50
16 10/19/2023 < 10 5 16 3/4/2021 < 100 50
17 1/18/2024 < 10 5 17 4/22/2021 < 100 50
18 18 5/6/2021 110 110
19 19 6/3/2021 < 100 50
20 20 7/22/2021 100 100
21 21 8/5/2021 800 800
22 22 8/30/2021 < 100 50
23 23 9/16/2021 < 100 50
24 24 10/14/2021 < 100 50
25 25 11/4/2021 < 100 50
26 26 12/16/2021 < 100 50
27 27 1/13/2022 < 100 50
28 28 2/3/2022 < 100 50
29 29 3/3/2022 < 100 50
30 30 4/14/2022 < 100 50
31 31 5/5/2022 < 100 50
32 32 6/2/2022 < 100 50
33 33 7/21/2022 < 100 50
34 34 9/15/2022 < 100 50
35 35 10/13/2022 130 130
36 36 11/3/2022 100 100
37 37 12/16/2022 110 110
38 38 1/26/2023 110 110
39 39 2/2/2023 < 100 50
40 40 3/2/2023 430 430
41 41 5/4/2023 < 100 50
42 42 6/1/2023 110 110
43 43 7/20/2023 < 100 50
44 44 8/3/2023 140 140
45 45 9/7/2023 100 100
46 46 10/19/2023 < 100 50
47 47 11/2/2023 110 110
48 48 12/7/2023 < 100 50
49 49 1/18/2024 < 100 50
50 50 2/1/2024 < 100 50
51 51 3/7/2024 < 100 50
52 52
53 53
54 54
55 55
56 56
57 57
58 58
83348 FW RPA,data
1 6/26/2024

Whole Effluent Toxicity Testing and Self Monitoring Summary
Skyco WTP NCO035670/001 County: Dare Region: WARO Basin: PAS51 Jan Apr Jul Oct SOC JOC:
Mysd24PF Begin: 10/1/2018 Mysid Acu 24hr PF M NonComp: 7Q10: Tidal PF: 0.192 IWC: NA Freq: Q
J F M A M J J A S O N D
2020 Pass - - Pass - - - - - Pass - -
2021 Pass - - Pass - - Pass - - Pass - -
2022 Pass - - Pass - - Pass - - Pass - -
2023 Pass - - Pass - - Pass - - Pass - -
2024 Pass - - Pass - - - - - - - -
Smith Creek WWTP NCO030759/001 County: Wake Region: RRO Basin: NEU02 Feb May Aug Nov SOC JOC:
Ceri7dPF Begin: 4/1/2019 chr lim:6.5%@ 3.0 NonComp: Single 7Q10: 67 PF: 3.5 IWC: S.3 Freq: Q
J F M A M J J A S O N D
2020 - Pass - - Pass - - Pass - - Pass -
2021 - Pass - - Pass - - Pass - - Pass -
2022 - Pass - - Pass - - NULL Pass - - Pass -
2023 - Pass - - Pass - - Pass - - Pass>26 -
2024 - Pass - - - - - - - - - -
Smithfield Packing Co.,Tarheel Div. NCO078344/001 County: Bladen Region: FRO Basin: CPF16 Jan Apr Jul Oct SOC JOC:
Ceri7dPF Begin: 2/1/2018 chr lim:0.58% NonComp: Single 7Q10: 795 PF: 3.0 IWC: 0.58 Freq: Q
J F M A M J J A S O N D
2020 Pass - - Pass - - Pass - - Pass - -
2021 Pass - - Pass - - Pass - - Pass - -
2022 Pass - - Pass - - Pass - - Pass - -
2023 Pass - - Pass - - Pass - - Pass - -
2024 Pass - - Pass - - - - - - - -
Smithfield WTP,Town of NCO083348 County: Johnston Region: RRO Basin: NEU02 Jan Apr Jul Oct SOC JOC:
Ceri7dPF Begin: 8/1/2013 Chr Monit: 90% NonComp: 7Q10: PF: 0.3 IWC: Freq: Q
J F M A M J J A S O N D
2020 Fail - - Fail - - Fail - - Fail - -
2021 Fail - - Fail - - Fail - - Fail - -
2022 Fail - - Pass - - Fail - - Fail - -
2023 Pass - - Pass - - Fail NR - - Fail - -
2024 Fail - - - - - - - - - - -
Snug Harbor on Nelson Bay WWTP NCO028827/001 County: Carteret Region: WIRO Basin: WOK04 Jan Apr Jul Oct SOC JOC:
Mysd24PF Begin: 2/1/2013 Acu Lim: 90%(plant NonComp: 7Q30: PF: IWC: Freq: Q
J F M A M J J A S O N D
2020 H - - H - - H - - H - -
Legend: P=Fathead minnow(Pimohales Dromelas).H=No Flow(facilitv is active),s=Split test between Certified Labs Page 94 of 112

Permit Enforcement History by Permit
Permit: Facility: Owner:
Region: County:
Penalty Remission Enforcement EMC Collection Has
Assessment Penalty Enforcement Request Conference Hearing Memo Sent Payment Case
Case Approved Amount Costs Damages Received Held Held To AGO Total Paid Balance Due Plan Closed
Total Cases:
Total Penalties: Total Penalties after

MONITORING REPORT(MR)VIOLATIONS for: Report Date: 05/30/24 Page 1 of 3
Permit: NCO083348 MRS Betweei 4 - 2019 and 5 - 2024 Region: % Violation Category:% Program Category: NPDES WW
Facility Name:% Param Nam(% County: % Subbasin:% Violation Action:%
Major Minor: %
PERMIT: NCO083348 FACILITY: Town of Smithfield-Smithfield WTP COUNTY: Johnston REGION: Raleigh
Limit Violation
MONITORING VIOLATION UNIT OF CALCULATED %
REPORT OUTFALL LOCATION PARAMETER DATE FREQUENCY MEASURE LIMIT VALUE Over VIOLATION TYPE VIOLATION ACTION
02-2020 001 Effluent Chlorine,Total Residual 02/06/20 2 X month ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
02-2020 001 Effluent Chlorine,Total Residual 02/20/20 2 X month ug/I 17 37 117.6 Daily Maximum No Action, BPJ
Exceeded
03-2020 001 Effluent Chlorine,Total Residual 03/05/20 2 X month ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine,Total Residual 04/14/20 2 X month ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine,Total Residual 04/16/20 2 X month ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
06-2020 001 Effluent Chlorine,Total Residual 06/04/20 2 X month ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
06-2020 001 Effluent Chlorine,Total Residual 06/18/20 2 X month ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine,Total Residual 07/02/20 2 X month ug/I 17 42 147.1 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine,Total Residual 07/14/20 2 X month ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine,Total Residual 07/16/20 2 X month ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
10-2020 001 Effluent Chlorine,Total Residual 10/15/20 2 X month ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine,Total Residual 11/05/20 2 X month ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
12-2020 001 Effluent Chlorine,Total Residual 12/03/20 2 X month ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
01-2021 001 Effluent Chlorine,Total Residual 01/07/21 2 X month ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
01-2021 001 Effluent Chlorine,Total Residual 01/14/21 2 X month ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine,Total Residual 02/18/21 2 X month ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR)VIOLATIONS for: Report Date: 05/30/24 Page 2 of 3
Permit: NCO083348 MRS Betweel 4 - 2019 and 5 - 2024 Region: % Violation Category:% Program Category: NPDES WW
Facility Name:% Param Nam(% County: % Subbasin:% Violation Action:%
Major Minor: %
PERMIT: NCO083348 FACILITY: Town of Smithfield-Smithfield WTP COUNTY: Johnston REGION: Raleigh
Limit Violation
MONITORING VIOLATION UNIT OF CALCULATED %
REPORT OUTFALL LOCATION PARAMETER DATE FREQUENCY MEASURE LIMIT VALUE Over VIOLATION TYPE VIOLATION ACTION
04-2021 001 Effluent Chlorine,Total Residual 04/20/21 2 X month ug/I 17 43 152.9 Daily Maximum No Action, BPJ
Exceeded
04-2021 001 Effluent Chlorine,Total Residual 04/22/21 2 X month ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
05-2021 001 Effluent Chlorine,Total Residual 05/20/21 2 X month ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
06-2021 001 Effluent Chlorine,Total Residual 06/03/21 2 X month ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
06-2021 001 Effluent Chlorine,Total Residual 06/17/21 2 X month ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
08-2021 001 Effluent Chlorine,Total Residual 08/05/21 2 X month ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
08-2021 001 Effluent Chlorine,Total Residual 08/19/21 2 X month ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
09-2021 001 Effluent Chlorine,Total Residual 09/02/21 2 X month ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
11-2021 001 Effluent Chlorine,Total Residual 11/04/21 2 X month ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded
04-2022 001 Effluent Chlorine,Total Residual 04/07/22 2 X month ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
04-2022 001 Effluent Chlorine,Total Residual 04/12/22 2 X month ug/I 17 38 123.5 Daily Maximum No Action, BPJ
Exceeded
04-2022 001 Effluent Chlorine,Total Residual 04/14/22 2 X month ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
05-2022 001 Effluent Chlorine,Total Residual 05/19/22 2 X month ug/I 17 34 100 Daily Maximum No Action, BPJ
Exceeded
10-2022 001 Effluent Chlorine,Total Residual 10/13/22 2 X month ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
01-2023 001 Effluent Chlorine,Total Residual 01/26/23 2 X month ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
03-2023 001 Effluent Chlorine,Total Residual 03/02/23 2 X month ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR)VIOLATIONS for: Report Date: 05/30/24 Page 3 of 3
Permit: NCO083348 MRS Betweel 4 - 2019 and 5 - 2024 Region: % Violation Category:% Program Category: NPDES WW
Facility Name:% Param Nam(% County: % Subbasin:% Violation Action:%
Major Minor: %
PERMIT: NCO083348 FACILITY: Town of Smithfield-Smithfield WTP COUNTY: Johnston REGION: Raleigh
Limit Violation
MONITORING VIOLATION UNIT OF CALCULATED %
REPORT OUTFALL LOCATION PARAMETER DATE FREQUENCY MEASURE LIMIT VALUE Over VIOLATION TYPE VIOLATION ACTION
04-2023 001 Effluent Chlorine,Total Residual 04/06/23 2 X month ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
06-2023 001 Effluent Chlorine,Total Residual 06/01/23 2 X month ug/I 17 38 123.5 Daily Maximum No Action, BPJ
Exceeded
06-2023 001 Effluent Chlorine,Total Residual 06/15/23 2 X month ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
07-2023 001 Effluent Chlorine,Total Residual 07/06/23 2 X month ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
07-2023 001 Effluent Chlorine,Total Residual 07/20/23 2 X month ug/I 17 46 170.6 Daily Maximum No Action, BPJ
Exceeded
10-2023 001 Effluent Chlorine,Total Residual 10/17/23 2 X month ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
12-2023 001 Effluent Chlorine,Total Residual 12/14/23 2 X month ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
04-2024 001 Effluent Chlorine,Total Residual 04/03/24 2 X month ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
04-2024 001 Effluent Chlorine,Total Residual 04/16/24 2 X month ug/I 17 47 176.5 Daily Maximum No Action, BPJ
Exceeded
04-2024 001 Effluent Chlorine,Total Residual 04/18/24 2 X month ug/I 17 38 123.5 Daily Maximum No Action, BPJ
Exceeded
Monitoring Violation
MONITORING VIOLATION UNIT OF CALCULATED %
REPORT OUTFALL LOCATION PARAMETER DATE FREQUENCY MEASURE LIMIT VALUE Over VIOLATION TYPE VIOLATION ACTION
10-2020 001 Effluent Solids,Total Suspended- 10/31/20 2 X month mg/I Frequency Violation Proceed to NOV
Concentration
08-2022 001 Effluent Solids,Total Suspended- 08/31/22 2 X month mg/I Frequency Violation Proceed to NOV
Concentration
Other Violation
MONITORING VIOLATION UNIT OF CALCULATED %
REPORT OUTFALL LOCATION PARAMETER DATE FREQUENCY MEASURE LIMIT VALUE Over VIOLATION TYPE VIOLATION ACTION
07-2023 07/31/23 Aquatic toxicity permit Proceed to NOV
limit violation