NC0005126_Fact Sheet_20210630

Fact Sheet
NPDES Permit No. NC0005126
Permit Writer/Email Contact Min Xiao, [e-mail]:
Date: April 9, 2021
Division/Branch: NC Division of Water Resources/NPDES Complex Permitting
Fact Sheet Template: Version 09Jan2017
Permitting Action:
❑X Renewal
❑ Renewal with Expansion
❑ New Discharge
❑ Modification (Fact Sheet should be tailored to mod request)
Note: A complete application should include the following:
• For New Dischargers, EPA Form 2A or 2D requirements, Engineering Alternatives Analysis, Fee
• For Existing Dischargers (POTW), EPA Form 2A, 3 effluent pollutant scans, 4 2nd species WET
tests.
• For Existing Dischargers (Non-POTW), EPA Form 2C with correct analytical requirements based
on industry category.
Complete applicable sections below. If not applicable, enter NA.
1. Basic Facility Information
Facility Information
Applicant/Facility Name:
Tyson Farms, Inc. d .. illey Animal Foods / Harmony
Rendering Plant
Applicant Address:
PO Box 158, Harmony, NC 28634
Facility Address:
501 Sheffield Road, Harmony, NC 28634
Permitted Flow:
0.5 MGD
Facility Type/Waste:
MINOR Industrial / Poultry Processing
Facility Class:
Class III
Treatment Units:
EQ basin, DAF unit, Anoxic reactors, Nitrification reactors,
Flocculation tank, Gravity clarifier, Lagoon,
Chlorination/Dechlorination, V-notch weir
Pretreatment Program (Y/N)
N
County:
Iredell
Region
Mooresville
Page 1 of 10

Briefly describe the proposed permitting action and facility background: This is a poultry rendering
plant that consumes poultry by-products including feathers, offal, and blood to produce chicken feed and
pet food ingredients. The facility is covered under the 40 CFR Part 432 Meat and Poultry Products
Effluent Limitation Guidelines, Subpart J — Renderers. Wastewater generated at the rendering plant is
treated by a waste activated sludge treatment system. The treatment system was designed based on the
following wastewater sources: feather cooker condensate — 50, 000 gpd; meat cooker condensate — 90,000
gpd; truck wash, floor drainage, venturi and packed bed scrubbers — 60,000 gpd; evaporator condensate
100,000 gpd (all flows are from the 2018 renewal application and based on 6 days/week). The facility has
an Outfall 001 that discharges into Hunting Creek which is classified WS-III waters in the Yadkin -Pee
Dee River Basin.
2. Receiving Waterbody Information:
Receiving Waterbody Information
Outfalls/Receiving Stream(s):
Outfall 001 — Hunting Creek
Stream Segment:
12-108-16-(0.5)
Stream Classification:
WS-III
Drainage Area (mi2):
175
Summer 7Q10 (cfs)
43
Winter 7Q10 (cfs):
71
30Q2 (cfs):
92
Average Flow (cfs):
175
IWC (% effluent):
1.8 % at 0.5 MGD
303(d) listed/parameter:
No [2018 303(d) list]
Subject to TMDL/parameter:
Yes- Statewide Mercury TMDL implementation & Turbidity
TMDL for Hunting Creek (approved in 2011)
Basin/Sub-basin/HUC:
03-07-06/03040102
USGS Topo Quad:
B16NW / Calahaln
Page 2 of 10

3. Effluent Data Summary
Effluent data for Outfall 001 is summarized below for the period of March 2018 through February 2021.
Table 3. Effluent Data Summary Outfall 001
Parameter
Units
Average
Max
Min
Permit
Limit
Flow
MGD
0.19
0.41
0.037
MA 0.5
BOD5
lb/d
20.43
988.9
0
DM 562.8
MA 281.4
TSS
lb/d
8.28
42.97
1.9
DM 695.2
MA 347.6
Oil & Grease
lb/d
13.02
124.3
5.3
DM 331.0
MA 165.5
NH3-N
lb/d
8.64
208.2
0
DM 231.7
MA 115.9
Fecal Coliform
#/100 ml
7.52
380
1
(geometric)
DM 400
MA 200
TRC
µg/1
12.01
40
5.2
DM 28 (<50
compliance)
MBAS
lb/d
0.38
1.6
0.1
Monitoring
Temperature
° C
24.58
33.2
14.1
Monitoring
DO
mg/1
5.98
10.01
3
Monitoring
pH
SU
7.12
7.6
6.1
6-9
TN
mg/1
45.94
160.2
1.74
DM 194
MA 134
TP
mg/1
5.89
68.1
0.2
Monitoring
MA -Monthly Average, WA -Weekly Average, DM -Daily Maximum, DA=Daily Average
4. Instream Data Summary
Instream monitoring may be required in certain situations, for example: 1) to verify model predictions
when model results for instream DO are within 1 mg/1 of instream standard at full permitted flow; 2) to
verify model predictions for outfall diffuser; 3) to provide data for future TMDL; 4) based on other
instream concerns. Instream monitoring may be conducted by the Permittee, and there are also
Monitoring Coalitions established in several basins that conduct instream sampling for the Permittee (in
which case instream monitoring is waived in the permit as long as coalition membership is maintained).
Page 3 of 10

There is no instream monitoring requirement for the facility. The receiving stream is not in the 2018
303(d) list.
Is this facility a member of a Monitoring Coalition with waived instream monitoring (Y/N): NA
Name of Monitoring Coalition: NA
5. Compliance Summary
Summarize the compliance record with permit effluent limits (past 5 years): The facility reported one
ammonia limit violation in 2016, which was proceeded to NOV. There were five BOD5 limit violations in
November 2018, and all these violations were proceeded to enforcement cases.
Summarize the compliance record with aquatic toxicity test limits and any second species test results
(past 5 years): From March 2016 through February 2021, the facility passed 20 of 20 quarterly chronic
toxicity tests.
Summarize the results from the most recent compliance inspection: The last Compliance Evaluation
Inspection conducted in August 2020 reported that the facility was being properly operated and well
maintained.
6. Water Quality -Based Effluent Limitations (WQBELs)
Dilution and Mixing Zones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1Q10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic
Life; non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA
If applicable, describe any mixing zones established in accordance with 15A NCAC 2B. 0204(b): NA
Oxygen -Consuming Waste Limitations
Limitations for oxygen -consuming waste (e.g., BOD) are generally based on water quality modeling to
ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits
(e.g., BOD= 30 mg/1 for Municipals) may be appropriate if deemed more stringent based on dilution and
model results.
If permit limits are more stringent than TBELs, describe how limits were developed: NA
Ammonia and Total Residual Chlorine Limitations
Page 4 of 10

Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of
1.0 mg/1 (summer) and 1.8 mg/1 (winter). Acute ammonia limits are derived from chronic criteria,
utilizing a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non -Municipals.
Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection
of aquatic life (17 ug/1) and capped at 28 ug/1(acute impacts). Due to analytical issues, all TRC values
reported below 50 ug/1 are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal:
For ammonia, the TBEL based on 40 CFR 432.103 are more stringent than WQBEL.
The allowable concentration of TRC based on the TRC WLA calculation is 960 ug/1, which will be
capped at 28 ug/1 as daily max limit to protect for acute toxicity.
Reasonable Potential Analysis (RPA) for Toxicants
If applicable, conduct RPA analysis and complete information below.
The facility only monitors Methylene -Blue Active Substances (MBAS) for the effluent. Short Form C for
Minor Industrial was used when the facility submitted the renewal application in September 2018, so
there were no toxic metal data available for review.
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 Y2 detection limit for "less than" values; and 4) streamflows used for dilution
consideration based on 15A NCAC 2B.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 was conducted on effluent toxicant data collected between September
2016 and February 2021. Pollutants of concern included toxicants with positive detections and associated
water quality standards/criteria. Based on this analysis, the following permitting actions are proposed for
this permit:
• Effluent Limit with Monitoring. The following parameters will receive a water quality -based
effluent limit (WQBEL) since they demonstrated a reasonable potential to exceed applicable
water quality standards/criteria: NA
• Monitoring Only. The following parameters will receive a monitor -only requirement since they
did not demonstrate reasonable potential to exceed applicable water quality standards/criteria,
but the maximum predicted concentration was >50% of the allowable concentration: NA
• No Limit or Monitoring: The following parameters will not receive a limit or monitoring, since
they did not demonstrate reasonable potential to exceed applicable water quality
standards/criteria and the maximum predicted concentration was <50% of the allowable
concentration: MBAS
• POTW Effluent Pollutant Scan Review: Three effluent pollutant scans were evaluated for
additional pollutants of concern.
o The following parameter(s) will receive a water quality -based effluent limit (WQBEL)
with monitoring, since as part of a limited data set, two samples exceeded the allowable
discharge concentration: NA
Page 5 of 10

o The following parameter(s) will receive a monitor -only requirement, since as part of a
limited data set, one sample exceeded the allowable discharge concentration: NA
Toxicity Testing Limitations
Permit limits and monitoring requirements for Whole Effluent Toxicity (WET) have been established in
accordance with Division guidance (per WET Memo, 8/2/1999). Per WET guidance, all NPDES permits
issued to Major facilities or any facility discharging "complex" wastewater (contains anything other than
domestic waste) will contain appropriate WET limits and monitoring requirements, with several
exceptions. The State has received prior EPA approval to use an Alternative WET Test Procedure in
NPDES permits, using single concentration screening tests, with multiple dilution follow-up upon a test
failure.
Describe proposed toxicity test requirement: This is a minor industrial facility, and a chronic WET limit
at 1.8% effluent will continue on a quarterly frequency.
Mercury Statewide TMDL Evaluation
There is a statewide TMDL for mercury approved by EPA in 2012. The TMDL target was to comply
with EPA's mercury fish tissue criteria (0.3 mg/kg) for human health protection. The TMDL established a
wasteload allocation for point sources of 37 kg/year (81 lb/year), and is applicable to municipals and
industrial facilities with known mercury discharges. Given the small contribution of mercury from point
sources (-2% of total load), the TMDL emphasizes mercury minimization plans (MMPs) for point source
control. Municipal facilities > 2 MGD and discharging quantifiable levels of mercury (>1 ng/1) will
receive an MMP requirement. Industrials are evaluated on a case -by -case basis, depending if mercury is a
pollutant of concern. Effluent limits may also be added if annual average effluent concentrations exceed
the WQBEL value (based on the NC WQS of 12 ng/1) and/or if any individual value exceeds a TBEL
value of 47 ng/1
The facility does not test Mercury. There are no Mercury data available for review.
Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation
within this permit:
A TMDL for turbidity for Hunting Creek was approved in 2011. The TMDL did not include an allocation
for the discharge from point sources.
Hunting Creek is part of the High Rock Lake watershed. The Division is developing a nutrient strategy to
address the impairment of the lake. This permit renewal will continue to include the reopener clause to
address the reopening of the permit to modify limits or monitoring when the Division implements a
nutrient strategy or TMDL for High Rock Lake.
Other WQBEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: NA
Page 6 of 10

If applicable, describe any special actions (HQW or ORW) this receiving stream and classification shall
comply with in order to protect the designated waterbody: NA
If applicable, describe any compliance schedules proposed for this permit renewal in accordance with
15A NCAC 2H.0107(c) (2) (B), 40CFR 122.47, and EPA May 2007 Memo: NA
If applicable, describe any water quality standards variances proposed in accordance with NCGS 143-
215.3(e) and 15A NCAC 2B. 0226 for this permit renewal: NA
7. Technology -Based Effluent Limitations (TBELs)
Industrials
Describe what this facility produces: Chicken and pet food ingredients
List the federal effluent limitations guideline (ELG) for this facility: 40 CFR 432 - 432.102 BPT &
432.103 BAT (the new source date for direct dischargers is 9/22/2004 for 40 CFR Part 432 Subpart J-L,
the plant was built prior to 9/22/2004, so the New Source Performance Standards do not apply)
If the ELG is based on production or flow, document how the average production/flow value was
calculated: This ELG is based on raw material consumed. The daily average raw material consumed
(lbs/day) for the past 3 years was reported as 1,540,906 lb/day in the renewal application submitted on
September 19, 2018. The facility confirmed on May 3, 2021 that this number is still correct and there
have not been any changes in plant production.
For ELG limits, document the calculations used to develop TBEL limits: The limits in the Tables below
are based on 1,540,906 lb/day of daily average raw material consumed and the effluent guidelines in
432.102 BPT and 432.103 BAT.
Table 4. TBEL Development per 40 CFR 432.102 BPT
BOD5
Fecal Coliform
O&G
TSS
Daily
Max
Monthly
Average
Daily Max
Monthly
Average
Daily
Max
Monthly
Average
Daily
Max
Monthly
Average
432.102
BPT
lb/1000
lb
" " ^
0.17
Max. 400
CFU/100 ml
N/A
0.2
0.1
0.42
0.21
Permit
Limits
lb/day
523.9
262.0
400
CFU/100 ml
N/A
308.2
154.1
647.2
323.6
Table 5. TBEL Development per 40 CFR 432.103 BAT
Ammonia as N
Total Nitrogen
Daily Max
Monthly
Average
Daily Max
Monthly
Average
432.103
BAT
lb/10001b
0.14
0.07
194 mg/1
134 mg/1
Permit
Limits
lb/day
215.7
107.9
194 mg/1
134 mg/1
If any limits are based on best professional judgement (BPJ), describe development: NA
Document any TBELs that are more stringent than WQBELs: Ammonia. The TBEL for ammonia is 25.9
mg/1 as monthly average, which is less than the WQBEL of 44.3 mg/1.
Page 7 of 10

Document any TBELs that are less stringent than previous permit: NA
8. Antidegradation Review (New/Expanding Discharge):
The objective of an antidegradation review is to ensure that a new or increased pollutant loading will not
degrade water quality. Permitting actions for new or expanding discharges require an antidegradation
review in accordance with 15A NCAC 2B.0201. Each applicant for a new/expanding NPDES permit
must document an effort to consider non -discharge alternatives per 15A NCAC 2H.0105(c)(2). In all
cases, existing instream water uses and the level of water quality necessary to protect the existing use is
maintained and protected.
If applicable, describe the results of the antidegradation review, including the Engineering Alternatives
Analysis (EAA) and any water quality modeling results: NA
9. Antibacksliding Review:
Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YES/NO): NO
If YES, confirm that antibacksliding provisions are not violated: NA
10. Monitoring Requirements
Monitoring frequencies for NPDES permitting are established in accordance with the following
regulations and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 2B.0500; 2)
NPDES Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance,
Reduced Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best
Professional Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not
considered effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti -
backsliding prohibitions would not be triggered by reductions in monitoring frequencies.
For instream monitoring, refer to Section 4. NA
11. Electronic Reporting Requirements
The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective
December 21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports
(DMRs) electronically. While NPDES regulated facilities would initially be required to submit additional
NPDES reports electronically effective December 21, 2020, EPA extended this deadline from December
21, 2020, to December 21, 2025. The current compliance date, effective January 4, 2021, was extended as
a final regulation change published in the November 2, 2020 Federal Register. This permit contains the
requirements for electronic reporting, consistent with Federal requirements.
Page 8 of 10

12.Summary of Proposed Permitting Actions:
Permit conditions, limits and their proposed changes for 0.5 MGD are summarized in Table 6.
Table 6. Current Permit Conditions and Proposed Changes
Parameter
Current Permit
Proposed Change
Basis for Condition/Change
Flow
MA 0.5 MGD
Jo change
15A NCAC 2B .0505
BOD5
MA 281.4 lb/d
DM 562.8 lb/d
MA 262.0 mg/1
DM 523.9 mg/1
TBEL. 40 CFR 432.102 BPT
TSS
MA 347.6 lb/d
DM 695.2 lb/d
MA 323.6 lb/d
DM 647.2 lb/d
TBEL. 40 CFR 432.102 BPT
Oil & Grease
MA 165.5 lb/d
DM 331.0 lb/d
MA 154.1 lb/d
DM 308.2 lb/d
TBEL. 40 CFR 432.102 BPT
NH3-N
MA 115.9 lb/d
DM 231.71b/d
MA 107.9 lb/d
DM 215.71b/d
TBEL. 40 CFR 432.103 BAT
TRC
28 ug/1
',Tr) change
WQBEL. TRC Wasteload Allocation
Fecal Coliform
MA 200/100m1
DM 400/100m1
' o change
MA limit is WQBEL-based (15A
NCAC 2B), DM limit is TBEL-based
(40 CFR 432.102 BPT)
Temperature
Monitoring only
.\To change
15A NCAC 2B .0211 — Surface Water
Monitoring: Reporting
pH
6 — 9 SU
No change
WQBEL. State WQ standard, 15A
NCAC 2B
DO
Monitoring only
No change
WQBEL. State WQ standard, 15A
NCAC 2B
Total Nitrogen
MA 134.0 mg/1
DM 194.0 mg/1
\To change
TBEL. 40 CFR 432.103 BAT
Total Phosphorus
Monitoring Only
_ To change
High Rock Lake watershed
MBAS
Monitoring only
,o requirement
No reasonable potential shown to
violate WQS
Toxicity Test
Chronic limit, 1.8%
effluent
Jo change
WQBEL. No toxics in toxic amounts.
15A NCAC 2B.0200 and 15A NCAC
2B.0500
Electronic
Reporting
No requirement
Add Electronic
Reporting Special
Condition
In accordance with EPA Electronic
Reporting Rule 2015.
MGD — Million gallons per day, MA - Monthly Average, DM — Daily Max
Page 9 of 10

13. Public Notice Schedule:
Permit to Public Notice: 05/11/2021
Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days following
the publication date of the public notice. Any request for a public hearing shall be submitted to the
Director within the 30 days comment period indicating the interest of the party filing such request and the
reasons why a hearing is warranted.
14. NPDES Division Contact:
If you have questions regarding any of the above information or on the attached permit, please contact Min
Xiao at [phone] or via email at min.xiao(ancdenr.gov
15. Fact Sheet Addendum (if applicable):
Were there any changes made since the Draft Permit was public noticed (Yes/No): No
If Yes, list changes and their basis below: NA
16. Fact Sheet Attachments (if applicable):
• Monitoring Report Violations Summary
• Whole Effluent Toxicity Testing and Self -Monitoring Summary
• WWTP Compliance Inspection Report
• NH3/TRC Wasteload Allocation Calculation
• RPA Sheets
o Input Information
o Data Analysis
o Results Summary
Page 10 of 10

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/28/21
Page 1 of 2
Permit: nc0005126 MRs Betweel 3 - 2016 and 2 - 2021
Facility Name: % Param Name%
Major Minor: %
Region:
County: %
Violation Category:%
Subbasin:%
Program Category:
Violation Action: %
PERMIT: NC0005126
FACILITY: Tyson Farms Inc - Tyson Farms, Inc.
COUNTY: Iredell
REGION: Mooresville
Limit Violation
MONITORING OUTFALL
REPORT
LOCATION
PARAMETER
VIOLATION
UNIT OF
DATE FREQUENCY MEASURE
LIMIT
CALCULATED
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
11-2018 001
11-2018 001
11-2018 001
11-2018 001
11-2018 001
01-2018 001
07-2018 001
08-2018 001
08-2018 001
08-2018 001
01-2020 001
10-2016 001
Monitoring Violation
MONITORING OUTFALL
REPORT
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
LOCATION
BOD, 5-Day (20 Deg. C) -
Quantity Daily
BOD, 5-Day (20 Deg. C) -
Quantity Daily
BOD, 5-Day (20 Deg. C) -
Quantity Daily
BOD, 5-Day (20 Deg. C) -
Quantity Daily
BOD, 5-Day (20 Deg. C) -
Quantity Daily
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
11/10/18
11/14/18
11/15/18
11/18/18
11/30/18
3 X week
3 X week
3 X week
3 X week
3 X week
01/02/18 Weekly
07/03/18 Weekly
08/06/18 Weekly
08/13/18 Weekly
08/21/18 Weekly
01/07/20 Weekly
Nitrogen, Ammonia Total (as 10/18/16 Weekly
N) - Quantity Daily
PARAMETER
VIOLATION
Ibs/day
Ibs/day
Ibs/day
Ibs/day
Ibs/day
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
Ibs/day
UNIT OF
DATE FREQUENCY MEASURE
562.8
562.8
562.8
569
988.9
803.4
1.1
75.7
42.8
562.8 634.8 12.8
Daily Maximum
Exceeded
Daily Maximum
Exceeded
Daily Maximum
Exceeded
Daily Maximum
Exceeded
281.4 461.89 64.1 Monthly Average
Exceeded
28 29 3.6 Daily Maximum
Exceeded
28 40 42.9 Daily Maximum
Exceeded
28 32 14.3 Daily Maximum
Exceeded
28 38 35.7 Daily Maximum
Exceeded
28 40 42.9 Daily Maximum
Exceeded
28 32 14.3 Daily Maximum
Exceeded
231.7 265.07 14.4 Daily Maximum
Exceeded
LIMIT
CALCULATED
VALUE
ok
Over
VIOLATION TYPE
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to
Enforcement Case
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
Proceed to NOV
VIOLATION ACTION
02-2020 001
11-2020 001
Effluent
Effluent
BOD, 5-Day (20 Deg. C) -
Quantity Daily
BOD, 5-Day (20 Deg. C) -
Quantity Daily
02/08/20 3 X week
11/14/20 3 X week
Ibs/day
Ibs/day
Frequency Violation
No Action, BPJ
Frequency Violation No Action, BPJ

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/28/21 Page 2 of 2
Permit: nc0005126 MRs Betweel 3 - 2016 and 2 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param Name% County: % Subbasin:% Violation Action: %
Major Minor: %
PERMIT: NC0005126
FACILITY: Tyson Farms Inc - Tyson Farms, Inc.
COUNTY: Iredell REGION: Mooresville
Monitoring Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED
VALUE
ok
Over
VIOLATION TYPE VIOLATION ACTION
11 -2020 001 Effluent pH 11/14/20 3 X week su Frequency Violation No Action, BPJ
02 -2020 001 Effluent Solids, Total Suspended - 02/08/20 3 X week Ibs/day Frequency Violation No Action, BPJ
Quantity Daily
11-2020 001 Effluent Solids, Total Suspended - 11/14/20 3 X week Ibs/day Frequency Violation No Action, BPJ
Quantity Daily
11 -2020 001 Effluent Temperature, Water Deg. 11/14/20 3 X week deg c Frequency Violation No Action, BPJ
Centigrade

Whole Effluent Toxicity Testing and Self Monitoring Summary
Tyrrell County Bull Bay (RO) WTP NC0086924/001 County: Tyrrell Region: WARO Basin: PAS53 Jan Apr Jul Oct
Mysd24PF Begin: 11/1/2017 24hr p/f ac monit 90 NonComp: 7Q10: 0 PF: 0.216 IWC: 100 Freq: Q
SOC JOC:
J F M A M J J A 5 0 N D
2016 Pass - - Pass - - Pass - - Pass -
2017 Pass - - Pass - - Pass - - Pass -
2018 Pass - - Pass - - Pass - - Pass -
2019 Pass - - Pass - - Pass - - Pass -
2020 Pass - - Pass - - Pass - - Pass -
Tyson Foods Inc -Harmony Division NC0005126/001
Ceri7dPF Begin: 6/1/2014 chr lim: 1.8%
County: Iredell
NonComp: Single
Region: MRO
7010: 43
Basin: YAD06 Jan Apr Jul Oct
PF: 0.5 IWC: 1.8 Freq: Q
SOC JOC:
J F M A M J J A 5 0 N D
2016 Pass(s) - - Pass(s) - - Pass(s) - - Pass(s) -
2017 Pass(s) - - Pass(s) - - Pass(s) - - Pass(s) -
2018 Pass(s) - - Pass - - Pass(s) - - Pass(s) -
2019 Pass(s) - - Pass - - Pass - - Pass -
2020 Pass(s) - - Pass - - Pass - - Pass Pass -
UNC-Chapel Hill Power Plant NC0025305/001 County: Orange Region: RRO Basin: CPF06 SOC JOC:
Fthd24Ac Begin: 7/1/2012 24hr ac monit epis ft NonComp: 7Q10: 0.0 PF: 0.048 IWC: 100 Freq: 5OWD/A
2016
2017
2018
2019
2020
J
H
H
H
H
H
F M A M J J A 5 0 N D
H H H H H H H H H H H
H H H H H H H H H H H
- H H H H H H H H H H
H H H H H H H H H H H
H H H H H - NR H H H -
Unifi-Kinston LLC (El Dupont) NC0003760/001 County: Lenoir Region: WARO Basin: NEU05 Jan Apr Jul Oct
Ceri7dPF Begin: 4/1/2010 CHR LIM: 1.9% NonComp: SINGLE 7Q10: 283.1 PF: 3.6 IWC: 1.9 Freq: Q
SOC JOC:
J F M A M J J A 5 0 N D
2016 Pass - - Pass - - Pass - - Pass -
2017 Pass - - Pass - - Pass - - Pass -
2018 Pass - - Pass - - Pass - - Pass -
2019 Pass - - Pass - - Pass - - Pass -
2020 Pass - - Pass - - Pass - - -
Unimin Corp. Red Hill Plant NC0085839/001 County: Mitchell Region: ARO Basin: FRB06 Jan Apr Jul Oct
Ceri7dPF Begin: 7/1/2018 chr lim: 3.3% @ 2 M NonComp: Single 7Q10: 90.7 PF: 2 IWC: 1.2 Freq: Q
SOC JOC:
J F M A M J J A S 0 N D
2016 Pass - - Pass - - Pass - - Pass -
2017 Pass - - Pass - - Pass - - Pass -
2018 Pass - - Pass - - Pass - - Pass -
2019 Pass - Pass - - Pass - - Pass -
2020 Fail 4.7 2.3 8.086 (P) Pass - - 4.7 - - 4.79.3 -
Legend: P= Fathead minnow (Pimphales promelas), H=No Flow (facility is active), s = Split test between Certified Labs
Page 112 of 121

Whole Effluent Toxicity Testing and Self Monitoring Summary
Tyrrell County Bull Bay (RO) WTP NC0086924/001 County: Tyrrell Region: WARO Basin: PAS53 Jan Apr Jul Oct
Mysd24PF Begin: 11/1/2017 24hr p/f ac monit 90 NonComp: 7Q10: 0 PF: 0.216 IWC: 100 Freq: Q
SOC JOC:
J F M A M J J A 5 0 N D
2017 Pass - - Pass - - Pass - - Pass -
2018 Pass - - Pass - - Pass - - Pass -
2019 Pass - - Pass - - Pass - - Pass -
2020 Pass - - Pass - - Pass - - Pass -
2021 Pass - - - - - - -
Tyson Foods Inc -Harmony Division NC0005126/001
Ceri7dPF Begin: 6/1/2014 chr lim: 1.8%
County: I red el l
NonComp: Single
Region: MRO
7010: 43
Basin: YAD06 Jan Apr Jul Oct
PF: 0.5 IWC: 1.8 Freq: Q
SOC JOC:
J F M A M J J A 5 0 N D
2017 Pass(s) - - Pass(s) - - Pass(s) - - Pass(s) -
2018 Pass(s) - - Pass - - Pass(s) - - Pass(s) -
2019 Pass(s) - - Pass - - Pass - - Pass -
2020 Pass(s) - - Pass - - Pass - - Pass Pass -
2021 Pass - - - - - - -
UNC-Chapel Hill Power Plant NC0025305/001 County: Orange Region: RRO Basin: CPF06 SOC JOC:
Fthd24Ac Begin: 7/1/2012 24hr ac monit epis ft NonComp: 7Q10: 0.0 PF: 0.048 IWC: 100 Freq: 50WD/A
2017
2018
2019
2020
2021
J
H
H
H
H
H
F M A M J J A S 0 N D
H H H H H H H H H H H
- H H H H H H H H H H
H H H H H H H H H H H
H H H H H - NR H H H H
H- - - - - - - - -
Unifi-Kinston LLC (El Dupont) NC0003760/001 County: Lenoir Region: WARO Basin: NEU05 Jan Apr Jul Oct
Ceri7dPF Begin: 4/1/2010 CHR LIM: 1.9% NonComp: SINGLE 7Q10: 283.1 PF: 3.6 IWC: 1.9 Freq: Q
SOC JOC:
J F M A M J J A 5 0 N D
2017 Pass - - Pass - - Pass - - Pass -
2018 Pass - - Pass - - Pass - - Pass -
2019 Pass - - Pass - - Pass - - Pass -
2020 Pass - - Pass - - Pass - - Pass -
2021 Pass - - - - - - -
Unimin Corp. Red Hill Plant NC0085839/001 County: Mitchell Region: ARO Basin: FRB06 Jan Apr Jul Oct
Ceri7dPF Begin: 7/1/2018 chr lim: 3.3% @ 2 M NonComp: Single 7Q10: 90.7 PF: 2 IWC: 1.2 Freq: Q
SOC JOC:
J F M A M J J A 5 0 N D
2017 Pass - - Pass - - Pass - - Pass -
2018 Pass - - Pass - - Pass - - Pass -
2019 Pass - Pass - - Pass - - Pass -
2020 Fail 4.7 2.3 8.086 (P) Pass - - 4.7 - - 4.79.3 -
2021 >13.2 >13.2 - - - - -
Legend: P= Fathead minnow (Pimphales promelas), H=No Flow (facility is active), s = Split test between Certified Labs
Page 108 of 117

United States Environmental Protection Agency
EPA Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code
1 IN I 2 [5 J
21IIIIII
NPDES yr/mo/day Inspection
3 I NC0005126 111 121 20/08/07 117
Type
18 I �, I
IIIIIII
Inspector Fac Type
191 S I 201 I
IIIIIIIIIIIIIIHim IIIII
IIII 166
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved
67I2.0 I 70I4 I 711N I 72 I N I 73174 71
1 1 1 1 1 1 Il80
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Tyson Farms, Inc.
501 Sheffield Rd
Harmony NC 28634
Entry Time/Date
09:05AM 20/08/07
Permit Effective Date
14/06/01
Exit Time/Date
12:25PM 20/08/07
Permit Expiration Date
19/03/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Kevin Todd Haynes/ORC/704-546-2602/
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Steven Smith,PO Box 158 Harmony NC 28634/Plant Manager/704-546-2602/
Yes
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenar Records/Reports
Self -Monitoring Progran Sludge Handling Dispo: Facility Site Review Effluent/Receiving Wate
Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s)
Wes Bell
of Inspector(s) Agency/Office/Phone and Fax Numbers Date
�Docusigned by: DWR/MRO WQ/704-663-1699 Ext.2192/ 8/20/2020
'-A61696D9OCC3437...
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
W. Corey Basinger DWR/Division of Water Quality/704-235-2194/
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page# 1

NPDES yr/mo/day
31 NC0005126 111 121 20/08/07
I17
Inspection Type
18 [j
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Page# 2

Permit: NC0005126
Inspection Date: 08/07/2020
Owner - Facility: Tyson Farms, Inc.
Inspection Type: Compliance Evaluation
Permit
(If the present permit expires in 6 months or less). Has the permittee submitted a new
application?
Is the facility as described in the permit?
# Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
Yes No NA NE
• ❑ ❑ ❑
❑ ❑ • ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
Comment: The Division received the permit renewal package on 8/19/18.
The facility description noted in the permit will need to be updated to include all wastewater
treatment upgrades.
The last compliance evaluation inspection at this facility was performed by DWR staff on
6/29/18.
Record Keeping Yes No NA NE
Are records kept and maintained as required by the permit? • ❑ ❑ ❑
Is all required information readily available, complete and current? • ❑ ❑ ❑
Are all records maintained for 3 years (lab. reg. required 5 years)? • ❑ ❑ ❑
Are analytical results consistent with data reported on DMRs? • ❑ ❑ ❑
Is the chain -of -custody complete? • ❑ ❑ ❑
Dates, times and location of sampling •
Name of individual performing the sampling •
Results of analysis and calibration •
Dates of analysis •
Name of person performing analyses •
Transported COCs •
Are DMRs complete: do they include all permit parameters? • ❑ ❑ ❑
Has the facility submitted its annual compliance report to users and DWQ? ❑ ❑ • ❑
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operatc ❑ ❑ • ❑
on each shift?
Is the ORC visitation log available and current? • ❑ ❑ ❑
Is the ORC certified at grade equal to or higher than the facility classification? • ❑ ❑ ❑
Is the backup operator certified at one grade less or greater than the facility classification' • ❑ ❑ ❑
Is a copy of the current NPDES permit available on site? • ❑ ❑ ❑
Facility has copy of previous year's Annual Report on file for review? ❑ ❑ • ❑
Page# 3

Permit: NC0005126
Inspection Date: 08/07/2020
Owner - Facility: Tyson Farms, Inc.
Inspection Type: Compliance Evaluation
Record Keeping Yes No NA NE
Comment: The records reviewed during the inspection were organized and well maintained. Discharge
Monitoring Reports (eDMRs) were reviewed for the period July 2019 through June 2020. Nc
effluent limit violations were reported all monitoring frequencies were correct.
The ORC and staff must ensure that the ambient temperature inside the composite sampler
is documented to verify proper preservation (less than or equal to six degrees Celsius)
during the 24-hr. sampling period.
Laboratory Yes No NA NE
Are field parameters performed by certified personnel or laboratory? • ❑ ❑ ❑
Are all other parameters(excluding field parameters) performed by a certified lab? • ❑ ❑ ❑
# Is the facility using a contract lab? • ❑ ❑ ❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees • ❑ ❑ ❑
Celsius)?
Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
❑ ❑ • ❑
❑ ❑ • ❑
Comment: On -site field analyses (dissolved oxygen, pH, temperature, total residual chlorine) are
performed under Tyson Farm's field laboratory certification #5081. PAR Labs (all effluent
parameters except field and toxicity), Meritech (toxicity) and ETT Environmental (toxicity)
have also been contracted to provide analytical support.
A five -point verification with primary standards (ultra -low range) must be performed initially
on the new total residual chlorine meter (DR 3900) and every twelve months while this
meter is being used for effluent analyses (Reference: North Carolina
Wastewater/Groundwater Lab Certification approved procedure for analysis of total residual
chlorine — DPD Colorimetric by SM 4500 CI G-2011).
Effluent Sampling
Is composite sampling flow proportional?
Is sample collected below all treatment units?
Is proper volume collected?
Is the tubing clean?
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type
representative)?
Yes No NA NE
• ❑ ❑ ❑
▪ ❑ ❑ ❑
• ❑ ❑ ❑
❑ • ❑ ❑
▪ ❑ ❑ ❑
Comment: The subject permit requires composite and grab effluent samples. The sampler tubing
needed to be cleaned/replaced; however, the facility was not sampling during the inspection
In addition, the aliquot volume was slightly below 100 mis. during the inspection and previou
aliquot volume checks by on -site staff (multiple occasions). The ORC corrected the
sampler program to ensure a minimum of 100 mis per aliquot will be collected during future
sampling events and later notified DWR staff that the tubing was changed.
Page# 4

Permit: NC0005126
Inspection Date: 08/07/2020
Owner - Facility: Tyson Farms, Inc.
Inspection Type: Compliance Evaluation
Operations & Maintenance
Is the plant generally clean with acceptable housekeeping?
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable
Solids, pH, DO, Sludge Judge, and other that are applicable?
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
Comment: The facility was being properly operated and well maintained. The ORC and staff
incorporate a comprehensive process control program with all measurements being
properly documented and maintained on -site.
The facility is equipped with a SCADA system to assist the wastewater staff in the
operations of treatment processes/units. Although not required, the wastewater treatment
facility is staff with certified operators twenty-four (24) hours per day, seven (7) days per
week.
Equalization Basins Yes No NA NE
Is the basin aerated? • ❑ ❑ ❑
Is the basin free of bypass lines or structures to the natural environment? • ❑ ❑ ❑
Is the basin free of excessive grease? • ❑ ❑ ❑
Are all pumps present? • ❑ ❑ ❑
Are all pumps operable? • ❑ ❑ ❑
Are float controls operable? • ❑ ❑ ❑
Are audible and visual alarms operable? ❑ ❑ • ❑
# Is basin size/volume adequate? • ❑ ❑ ❑
Comment: The facility continues to equalize waste streams with the 4.5 MG lagoon and two circular
tanks (.845 MG and .034 MG).
Solids Handling Equipment
Is the equipment operational?
Is the chemical feed equipment operational?
Is storage adequate?
Is the site free of high level of solids in filtrate from filter presses or vacuum filters?
Is the site free of sludge buildup on belts and/or rollers of filter press?
Is the site free of excessive moisture in belt filter press sludge cake?
The facility has an approved sludge management plan?
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
❑ ❑ • ❑
❑ ❑ • ❑
❑ ❑ • ❑
• ❑ ❑ ❑
Comment: The DAF unit treats all process wastewater and waste activated sludge from .845 MG EQ
tank. DAF effluent is conveyed to the first anoxic treatment tank. The DAF solids are stored
in a tank prior to being transported and land applied to permitted sites located in either
Wilkes County or South Carolina by Terra Renewal Services.
Chemical Feed Yes No NA NE
Page# 5

Permit: NC0005126
Inspection Date: 08/07/2020
Owner - Facility: Tyson Farms, Inc.
Inspection Type: Compliance Evaluation
Chemical Feed
Is containment adequate?
Is storage adequate?
Are backup pumps available?
Is the site free of excessive leaking?
Comment:
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
Nutrient Removal Yes No NA NE
# Is total nitrogen removal required? • ❑ ❑ ❑
# Is total phosphorous removal required? ❑ • ❑ ❑
Type Biological
# Is chemical feed required to sustain process? ❑ ❑ • ❑
Is nutrient removal process operating properly? • ❑ ❑ ❑
Comment: The facility is equipped with three anoxic reactors and three aerobic reactors. Glycerin is
available as a carbon supplement (not being added at time of inspection).
Aeration Basins Yes No NA NE
Mode of operation Ext. Air
Type of aeration system Diffused
Is the basin free of dead spots? • ❑ ❑ ❑
Are surface aerators and mixers operational? • ❑ ❑ ❑
Are the diffusers operational? • ❑ El El
Is the foam the proper color for the treatment process? • ❑ ❑ ❑
Does the foam cover less than 25% of the basin's surface? • ❑ ❑ ❑
Is the DO level acceptable? • ❑ El El
Is the DO level acceptable?(1.0 to 3.0 mg/I) • ❑ El El
Comment: Aqueous lime is added to maintained appropriate alkalinity/pH levels.
The foam coverage in both aeration tanks was greater than twenty-five percent; however, nc
foam carry-over was observed in the clarifier. The foam was later attributed to a surfactant.
The small amount of foam on the ground adjacent to one of the aeration tanks was in the
process of being cleaned up.
Secondary Clarifier
Is the clarifier free of black and odorous wastewater?
Is the site free of excessive buildup of solids in center well of circular clarifier?
Are weirs level?
Yes No NA NE
Page# 6

Permit: NC0005126
Inspection Date: 08/07/2020
Owner - Facility: Tyson Farms, Inc.
Inspection Type: Compliance Evaluation
Secondary Clarifier
Is the site free of weir blockage?
Is the site free of evidence of short-circuiting?
Is scum removal adequate?
Is the site free of excessive floating sludge?
Is the drive unit operational?
Is the return rate acceptable (low turbulence)?
Is the overflow clear of excessive solids/pin floc?
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth)
Comment: A coagulant and flocculant are added to enhance settling.
Pumps-RAS-WAS
Are pumps in place?
Are pumps operational?
Are there adequate spare parts and supplies on site?
Comment:
Disinfection -Liquid
Is there adequate reserve supply of disinfectant?
(Sodium Hypochlorite) Is pump feed system operational?
Is bulk storage tank containment area adequate? (free of leaks/open drains)
Is the level of chlorine residual acceptable?
Is the contact chamber free of growth, or sludge buildup?
Is there chlorine residual prior to de -chlorination?
Comment:
De -chlorination
Type of system ?
Is the feed ratio proportional to chlorine amount (1 to 1)?
Is storage appropriate for cylinders?
# Is de -chlorination substance stored away from chlorine containers?
Are the tablets the proper size and type?
Comment: Sodium bisulfite is used for dechlorination.
Are tablet de -chlorinators operational?
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
▪ ❑ ❑ ❑
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
Yes No NA NE
Liquid
• ❑ ❑ ❑
❑ ❑ • ❑
❑ ❑ • ❑
❑ ❑ • ❑
❑ ❑ • ❑
Page# 7

Permit: NC0005126
Inspection Date: 08/07/2020
Owner - Facility: Tyson Farms, Inc.
Inspection Type: Compliance Evaluation
De -chlorination
Number of tubes in use?
Comment:
Yes No NA NE
Flow Measurement - Effluent Yes No NA NE
# Is flow meter used for reporting? • ❑ ❑ ❑
Is flow meter calibrated annually? • ❑ ❑ ❑
Is the flow meter operational? • El ❑ El
(If units are separated) Does the chart recorder match the flow meter? ❑ ❑ • ❑
Comment: The flow meter is calibrated annually and was last calibrated on 6/5/2020 by Carotek.
Effluent Pipe
Is right of way to the outfall properly maintained?
Are the receiving water free of foam other than trace amounts and other debris?
If effluent (diffuser pipes are required) are they operating properly?
Comment: The effluent appeared clear with no floatable solids or foam.
Yes No NA NE
❑ ❑ • ❑
• ❑ ❑ ❑
❑ ❑ • ❑
Page# 8

NH3/TRC WLA Calculations
Facility: Harmony Rendering Plant
PermitNo. NC0005126
Prepared By: Min Xiao
Enter Design Flow (MGD):
Enter s7Q10 (cfs):
Enter w7Q10 (cfs):
0.5
43
71
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/I)
IWC (%)
Allowable Conc. (ug/I)
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
43
0.5
0.775
17.0
0
1.77
960
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
w7Q10 (CFS)
200/100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
56.48 Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
43
0.5
0.775
1.0
0.22
1.77
44.3
71
0.5
0.775
1.8
0.22
1.08
146.5
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
❑ CHECK IF HQW OR ORW WQS
Tyson Farms Inc. - Harmony Rendering Plant
Class III
NC0005126
001
0.500
Hunting Creek
03040102
❑� Apply WS Hardness WQC
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1 Q10s (cfs)
WS-III
43.00
71.00
92.00
175.00
35.31
Effluent Hardness
NO EFFLUENT HARDNESS DATA
Upstream Hardness
NO UPSTREAM HARDNESS DATA
Combined Hardness Chronic
DATA INCOMPLETE
Combined Hardness Acute
DATA INCOMPLETE
Data Source(s)
❑ CHECK TO APPLY MODEL
CHECK WQS
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Par23
Par24
Name
WQS
Type Chronic Modifier
Acute
PQL Units
Arsenic
Aquactic Life
C
150
FW
340
ug/L
Arsenic
Human Health
Water Supply
C
10
HH/WS
N/A
ug/L
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
NO DATA
FW
NO DATA
ug/L
Chlorides
Aquatic Life
NC
230
FW
mg/L
Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
♦ Total Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium III
Aquatic Life
NC
NO DATA
FW
NO DATA
ug/L
Chromium VI
Aquatic Life
NC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
pg/L
Copper
Aquatic Life
NC
NO DATA
FW
NO DATA
ug/L
Cyanide
Aquatic Life
NC
5
FW
22
10
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Lead
Aquatic Life
NC
NO DATA
FW
NO DATA
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
ng/L
Molybdenum
Human Health
NC
2000
HH
ug/L
Nickel
Aquatic Life
NC
NO DATA
FW
NO DATA
pg/L
Nickel
Water Supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
NO DATA
ug/L
Zinc
Aquatic Life
NC
NO DATA
FW
NO DATA
ug/L
MBAS
Water Supply
NC
500
WS
pg/L
RPA, input
5/5/2021

REASONABLE POTENTIAL ANALYSIS
Par22
MBAS
Date Data BDL=1/2DL Results
1 1/27/2020 71.94 71.94 Std Dev.
2 2/3/2020 71.94 71.94 Mean
3 2/10/2020 71.94 71.94 C.V.
4 2/17/2020 95.92 95.92 n
5 2/24/2020 71.94 71.94
6 3/2/2020 47.96 47.96 Mult Factor =
7 3/9/2020 95.92 95.92 Max. Value
8 3/16/2020 143.88 143.88 Max. Pred Cw
9 3/23/2020 71.94 71.94
10 3/30/2020 71.94 71.94
11 4/6/2020 47.96 47.96
12 4/13/2020 71.94 71.94
13 4/20/2020 47.96 47.96
14 4/27/2020 23.98 23.98
15 5/4/2020 47.96 47.96
16 5/11/2020 47.96 47.96
17 5/18/2020 71.94 71.94
18 5/25/2020 47.96 47.96
19 6/1/2020 23.98 23.98
20 6/8/2020 47.96 47.96
21 6/15/2020 95.92 95.92
22 6/22/2020 95.92 95.92
23 6/29/2020 71.94 71.94
24 7/6/2020 71.94 71.94
25 7/13/2020 71.94 71.94
26 7/20/2020 95.92 95.92
27 7/27/2020 95.92 95.92
28 8/3/2020 95.92 95.92
29 8/10/2020 47.96 47.96
30 8/17/2020 119.90 119.90
31 8/24/2020 95.92 95.92
32 8/31/2020 119.90 119.90
33 9/1/2020 95.92 95.92
34 9/7/2020 23.98 23.98
35 9/14/2020 71.94 71.94
36 9/21/2020 143.88 143.88
37 9/28/2020 95.92 95.92
38 10/4/2020 47.96 47.96
39 10/12/2020 95.92 95.92
40 10/19/2020 119.90 119.90
41 10/26/2020 95.92 95.92
42 11/2/2020 71.94 71.94
43 11/9/2020 71.94 71.94
44 11 / 16/2020 119.90 119.90
45 11/22/2020 143.88 143.88
46 11/30/2020 95.92 95.92
47 12/7/2020 95.92 95.92
48 12/14/2020 143.88 143.88
49 12/20/2020 95.92 95.92
50 12/27/2020 287.77 287.77
51 1/4/2021 335.73 335.73
52 1/11/2021 311.75 311.75
53 1/18/2021 263.79 263.79
54 1/25/2021 383.69 383.69
55 2/1/2021 191.85 191.85
56 2/8/2021 167.87 167.87
57 2/15/2021 215.83 215.83
58 2/22/2021 215.83 215.83
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points
= 58
77.1575
109.9810
0.7016
58
1.00
383.69 pg/L
383.69 pg/L
-1-
RPA, data
5/5/2021

Tyson Farms Inc. - Harmony Rendering Plant
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
NC0005126
Qw (MGD) = 0.50
1Q1OS (cfs) = 35.31
7Q1OS (cfs) = 43.00
7Q1OW (cfs) = 71.00
30Q2 (cfs) = 92.00
Avg. Stream Flow, QA (cfs) = 175.00
Receiving Stream: Hunting Creek HUC 03040102
WWTP/WTP Class: Class III
IWC% @ 1Q1OS = 2.147706803
IWC% @ 7Q1OS = 1.770416905
IWC% @ 7Q1OW = 1.079763149
IWC% @ 30Q2 = 0.835354352
IW%C @ QA = 0.440904565
Stream Class: WS-III
Outfall 001
Qw = 0.5 MGD
COMBINED HARDNESS (ma/L)
NO DATA
NO DATA
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS WATER SUPPLY
NO HARDNESS DATA
PARAMETER
TYPE
NC STANDARDS OR EPA CRITERIA
PQL
UNITS
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
Chronic
Applied
Standard
Acute
n
# Det. Max Pred Cw Allowable Cw
MBAS
NC
500
WS(7Q10s)
µg/L
58
58
383.69
Acute: NO WQS
___ _ __ _ _ __
Chronic: 59854.84
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ ___
No RP, Predicted Max < 50 % of Allowable Cw
Monitoring required. Aesthetic quality shall be
protected using 30Q2.
_
No
RPA, rpa
Page 1 of 1 5/5/2021