NC0020591_Fact Sheet_20241002

NCO020591
Fact Sheet
NPDES Permit No. NCO020591
Permit Writer/Email Contact: Gary Perlmutter, [e-mail]
Date: September 26, 2024
Division/Branch: NC Division of Water Resources/NPDES Municipal Permitting Unit
Fact Sheet Template: Version 09Jan2017
Permitting Action:
❑ 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:
City of Statesville — Third Creek WWTP
Applicant Address:
P.O. Box 1111, Statesville, NC 28687
Facility Address:
444 Third Creek Road, Statesville, NC 28687
Permitted Flow:
6.0 MGD (Phase I) with 6.0 MGD (Phase 1I) and
8.0 MGD Expansion
Facility Type/Waste:
MAJOR Municipal; 94.1% domestic, 5.9% industrial'
Facility Class:
Grade IV
Treatment Units:
Influent Pump Station, Bar Screens, Oxidation Ditch with Aerators,
Secondary Clarifiers, Chlorination and De -chlorination, Aerobic
Digestion, Filter Press
Pretreatment Program (Y/N):
Yes
County:
Iredell
Region:
Mooresville
Footnote:
1. Based on total permitted SIU flow of 0.24 MGD.
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NC0020591
Briefly describe the proposed permitting action and facility background: The City of Statesville has applied
for NPDES permit renewal, and submitted a renewal application dated 2/29/2024, received by the Division
on 3/5/2024. The cover letter included a system component list, which has been copied to update the
permit's supplement to cover sheet. Review of the application found it incomplete, with the three Effluent
Pollutant Scans, four 2nd species toxicity test reports, Sludge Management Plan, Chemical Addendum, and
Mercury Minimization Plan summary report missing. The missing information was received by request on
4/16/2024 and 4/24/2024. Effluent pollutant scans were sampled in April 2021, July 2022 and July 2023;
the second species toxicity tests were sampled in January, February, April and July 2023.
This facility serves a population of —22,775 residents in the City of Statesville (-21,360) and the Town of
Troutman (-1400). The City operates a pretreatment program with a long-term monitoring plan (LTMP)
for both Fourth Creek WWTP and Third Creek WWTP (NC0020591); Third Creek receives industrial
waste from five (5) Significant Industrial User (SIUs), including three (3) Categorical Industrial Users
(CIUs).
Inflow & Infiltration (I&I). The City reported on its NPDES permit renewal application an average daily
volume of 0.015 MGD I&I, and efforts to minimize I&I include the City's water / sewer department's
continuing to repair broken lines.
Sludge Management Plan. Biosolids are disposed of through Class B land application by Synagro via
Permit WQ0016247, and through the Statesville Class A permit WQ0006245.
2. Receiving Waterbody Information
Receiving Waterbody Information
Outfalls/Receiving Stream(s):
Outfall 001 — Third Creek
Stream Segment:
12-108-20-4
Stream Classification:
C
Drainage Area (mi):
55
Summer 7Q10 (cfs)
- 13.2
Winter 7Q10 (cfs):
17
30Q2 (cfs):
21
Average Flow (cfs):
56
IWC (% effluent):
41 at 6.0 MGD, 48 at 8.0 MGD
2022 303(d) listed/parameter:
None
Subject to TMDL/parameter:
Third Creek TMDL for Turbidity (2011); Statewide TMDL
for Mercury (2012)
Subbasin/HUC:
Yadkin -Pee Dee / 03040102
USGS Topo Quad:
Shepherds, NC
The overall assessment category of the receiving stream in 2022 is Data Inconclusive, based on a Data
Inconclusive rating for Fecal Coliform. The receiving stream is —40 miles upstream of the nearest water
supply boundary, WS-IV for the Tuckertown Reservoir (a.k.a. High Rock Lake) in the Yadkin River.
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NC0020591
3. Effluent Data Summary
Effluent data is summarized below for the period February 2020 - July 2024.
Table 1. Effluent Data Summary
Parameter
Units
Average
Max
Min
Permit Limit'
Flow
MGD
0.9
8.7
0.3
6.0 MGD
Total Monthly Flow
MG
26.770
46.197
17.000
Monitor & Report
BOD5 summer
(Apr 1 - Oct 31)
mg/L
3.6
28.1
< 2
MA = 12.0
WA = 18.0
BOD5 winter
(Nov 1 - Mar 31)
mg/L
3.6
58.0
< 2
MA = 24.0
WA = 36.0
BOD removal
%
97.1
99.4
29.3
> 85
Total Suspended Solids (TSS)
mg/L
5.0
25.4
< 2.5
MA = 30.0
WA = 45.0
TSS removal
%
96.7
99.7
69.4
> 85
NH3-N summer
(Apr l- Oct 31)2
mg/L
.
040
.
69
< 01
.
MA = 2.1
WA=6.3
NH3-N winter 2
(Nov 1 - Mar 31)
mg/L
0.56
6.24
< 0.1
MA = 4.7
WA = 14.1
Dissolved Oxygen (DO)
mg/L
8.8
12.7
5.2
DA > 5.0
Fecal Coliform
(geometric mean)
#/100 mL
7.2
8800
< 1
MA = 200
WA = 400
Total Residual Chlorine (TRC)
µg/L
All < 20
DM = 28
Temperature
°C
17.
26
7
Monitor & Report
Conductivity
µmhos/cm
-*
569
164
Monitor & Report
pH
SU
7.0
7.9
6.0
6.0 - 9.0
Total Nitrogen (TN)
mg/L
6.28
22.25
0.90
Monitor & Report
TN Load, monthly
lb/mo
1319.5
3142.9
253.8
Monitor & Report
TN Load, annual
lb/yr
16,793
22,349
10,156
182,650
Total Phosphorus (TP)
mg/L
3.68
13.57
0.26
Monitor & Report
TP Load, monthly
lb/mo
778.5
1842.8
238.4
Monitor & Report
TP Load, annual
lb/yr
9585
11,037
7126
36,530
Total Hardness
mg/L
36.4
56.0
14.4
Monitor & Report
Total Copper 2
µg/L
6.9
39
2.0
MA = 28.3
DM = 35.9
Bis(2-ethylhexyl)phthalate
µg/L
5.8
10.1
< 5
MA = 2.6
Footnotes on next page.
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NC0020591
Footnotes.
1. MA = Monthly Average; WA = Weekly Average; DM = Daily Maximum.
2. A value of 142 µg/L reported on 10/3/2022 was removed from the dataset as it identified as an outlier not
supported by duplicate samples which averaged 5.0 µg/L in the corresponding DMR comments.
The maximum annual average daily flow was 1.10 MGD or 18.3% of the permitted flow in 2020.
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/l 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).
Is this facility a member of a Monitoring Coalition with waived instream monitoring (YIN): YES.
Name of Monitoring Coalition: Yadkin Pee Dee River Basin Association (YPDRBA).
If applicable, summarize any instream data and what instream monitoring will be proposed for this permit
action: The current permit requires instream monitoring for�DO, Temperature, Conductivity, and Total
Hardness. Instream locations are as follows:
• Upstream (U) _ —100 ft above the outfall;
• Downstream 1 (D1) _ —2 miles below the outfall at NCSR 2359 (Bethesda Rd);
• Downstream 2 (D2) _ —3.5 miles below the outfall at NCSR 2362 (Triplett Rd).
Instream monitoring is provisionally waived in light of the Permittee's participation in the Yadkin Pee Dee
River Basin Association (YPDRBA, monitoring coalition). Hardness monitoring (upstream only) is
performed by the Permittee and is used in calculating allowable concentrations for certain dissolved metals
that are hardness -dependent (see Section 6.4. — Reasonable Potential Analysis below).
Data were available for review from nearby YPDRBA stations, including: Q3900000, located —2.7 miles
upstream the outfall at SR 2342 (Amity Hill Road) near Statesville; and Q3932000, located at D1. Data
from the two stations were obtained from the Division's monitoring coalition database. Data spanning
January 2019 through December 2023 were reviewed and checked against applicable stream standards as
well as for effluent impacts, the latter via statistical testing of downstream averages against the upstream
average of each parameter using t-test with the level of significance (p-value) set at 0.05. The data are
summarized in Tables 2 and 3 and discussed below.
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NCO020591
Table 2. Instream Data Summary: averages with ranges in parentheses.
*Significantly different from Upstream.
Parameter, units
Upstream
Downstream
Standard
(Q3900000)
(Q3932000)
DO, mg/L
Avg = 8.9
Avg = 8.6
DA = 5.0
(4.7 — 20.5)
(5.1— 1 L8)
4.0 (instantaneous)
Temperature, °C
Avg = 16.7
Avg = 16.6
32.0
(3.0 — 26.9)
(3.0 — 26.1)
Conductivity, µmhos/cm
NA
(50g 203)
(56 — 166)
Fecal Coliform, cfu/100 mL
Geomean = 622
Geomean = 707
(154 — 9000)
(118 — 8000)
Dissolved Oxygen (DO) — DO is in the permit as a parameter of concern for aquatic life. Summer minima
at the downstream stations was above the stream standard of 5.0 mg/L daily average but the upstream was
below it; both stations' minima were above the instantaneous minimum standard of 4.0 mg/L. No
statistically significant difference was found between the upstream and downstream stations. The facility
is meeting its effluent DO limits consistently and thus doesn't appear to be impacting the receiving stream.
Temperature — Temperature is in the permit as a parameter of concern for aquatic life. Summer maxima at
both stations were below the 32°C standard for lower piedmont and coastal plain waters. Since the data
were not collected synchronously between stations, up- to downstream increases could not be assessed. No
statistically significant differences were found between the upstream and downstream stations. Concurrent
effluent temperatures appear higher on average, with substantially higher winter minima. However, this
does not appear to be impacting the receiving stream.
Conductivity — Conductivity is in the permit as an indicator of industrial sources. The City has an active
pretreatment program with five SIUs. Specific Conductance was monitored instream, a parameter related
to Conductivity, but at 25°C. A statistically significant difference was found between the upstream and
downstream stations with downstream average reporting higher. Concurrent effluent average Conductivity
is about three times higher than downstream on average, thus appearing to affect the instream specific
conductance.
Fecal Coliform — Fecal Coliform was removed from the permit in 2019 based on review of the data at the
time which appeared similar between stations and that the receiving stream is neither a Class B water body
nor impaired for Fecal Coliform. The 2022 Integrated Report assessed the receiving stream as Data
Inconclusive based on Fecal Coliform data, which may be exceeding the instream standard of a geometric
mean of 200/100 mL based on at least 5 samples collected over a 30-day period or 400/100 mL in more
than 20% samples collected during such period (15A NCAC 02B .0211). Instream data are collected by
YPDRBA once a month, and upon review, both upstream and downstream geometric means are > 400/100
mL, with over 90% of samples being > 200/100 mL and over 50% of samples > 400/100 mL (Table 4),
suggesting a high likelihood that the stream is impaired if sufficient sampling were conducted. Log -
transformed Fecal Coliform data were tested to find no significant difference between stations. The Yadkin -
Pee Dee River Basin 2022 Report documents an increasing trend of Fecal Coliform exceedances both over
time from 2017 — 2019 and in space from above the discharge downstream to the confluence with Fourth
Creek. The report cites potential sources to include a couple minor NPDES package plants (discharging
100% domestic waste at < 1 MGD) and several biosolids land application and wastewater irrigation fields
in addition to the Third Creek WWTP, as well as a permitted cattle AFO (animal feeding operation)
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NC0020591
upstream of the upstream station. Based on the likelihood that the receiving stream is impaired, instream
monitoring for Fecal Coliform has been added to the permit.
Table 3. Instream Fecal Coliform levels from 2019 - 2022 (n = 58 samples at each site).
in Upstream
Downstream
# samples > 200/100 mL
54 (96%)
55 (98%)
# samples > 400/100 mL
34 (59%)
40 (69%)
In addition to the above permit -required parameters, the YPDR 3A also monitored for Ammonia, pH,
Inorganic Nitrogen (NO2+NO3), Total Kjeldahl Nitrogen (TKN), Phosphorus and Turbidity. Their data
were reviewed as above and summarized below.
Table 4. Additional Instream Parameter Data Summary: averages with ranges in parentheses.
*Statistically significantly different from Upstream.
Parameter, units
Upstream
Downstream
Standard
Ammonia, mg/L
Avg=0.11
Avg=0.12
NA
(< 0.02
- 0.43)
(< 0.02
- 0.58)
pH, SU
Avg
= 6.7
Avg =
6.9*
6.0 - 9.0
(4.8 -
7.8)
(5.8
- 7.4)
Inorganic Nitrogen, mg/L
Avg =
0.77
Avg =
0.79
NA
(0.38 -
1.05)
(0.50 -
1.06)
TKN, mg/L
Avg =
0.56
Avg =
0.60
NA
(< 0.20
- 1.15)
(0.24 -
1.30)
Total Phosphorus, mg/L
Avg -
0.07
Avg =
0.15*(<
NA
0.02
- 0.27)
(< 0.02
- 0.39)
Turbidity, NTU
Avg =
28.0
Avg =
29.5
50
(8.3 -
170)
(3.0 -170)
Review of the above additional parameters found significant increases in downstream pH and Total
Phosphorus. Since all pH data were within the water quality standard range, instream monitoring for this
parameter is not considered to be needed in the permit. Because of nutrient issues of High Rock Lake and
the increases found downstream of the outfall, instream monitoring for TKN, NO2+NO3 and Total
Phosphorus will be added to the permit at monthly frequency.
No significant differences were found between upstream and downstream Turbidity, and maxima were
above the 50 NTU standard at each location. The receiving stream has a Turbidity TMDL, which is
discussed in Section 6.7 below.
5. Compliance Summary
Summarize the compliance record with permit effluent limits (past 5 years): From August 2019 through
July 2024 the facility had reported one monthly average Ammonia exceedance in May 2021, resulting in
an enforcement case.
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NC0020591
Summarize the compliance record with aquatic toxicity test limits and any second species test results (past
5 years): The facility passed 24 of 26 quarterly chronic toxicity tests (including two test failures and six
subsequent passes), as well as all four second species chronic toxicity tests, sampled on 1/23//2023,
2/13/2023, 4/17/2023 and 7/17/2023.
Summarize the results from the most recent compliance inspection: The most recent facility inspection,
conducted on 3/9/2023, reported that overall the facility appeared to be properly maintained and operated.
No compliance issues were reported. The most recent pretreatment inspection was conducted on 1/25/2024,
finding the pretreatment program to be properly implemented.
6. Water Quality -Based Effluent Limitations (WQBELs)
6.1. Dilution and Mixin Zones
ones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1 Q 10 streamflow (acute Aquatic Life); 7Q 10 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.
6.2. 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/L for Municipals) may be appropriate if deemed more stringent based on dilution and
model results.
Ifpermit limits are more stringent than TBELs, describe how limits were developed: Limitations for BOD
are based on speculative limits determined via a Level B model for a proposed 9.0 MGD flow expansion
in November 2005. No changes are proposed.
6.3. Ammonia and Total Residual Chlorine Limitations
Limitations for ammonia are based on protection of aquatic life utilizing ammonia chronic criteria of 1.0
mg/L (summer) and 1.8 mg/L (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 µg/L) and capped at 28 µg/L (acute impacts). Due to analytical issues, all TRC values
reported below 50 µg/L are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: The current
Ammonia limits for the 6.0 MGD flow tier were placed in the permit in a modification in 2012 based on
Instream Waste Concentration (IWC)-based calculations for the protection against ammonia toxicity. The
current Ammonia limits for the 8.0 MGD flow tier were placed in the permit in 2011 based on speculative
limits for a proposed expansion to 9.0 MGD. Allowable concentrations were calculated at 8.0 MGD, but
found to be slightly less stringent than the speculative limits; the 9.0 MGD speculative limits were placed
in the permit at 8.0 MGD in 2012.
Ammonia and TRC have been reviewed in the attached Wasteload Allocation (WLA) sheet. The IWC-
based calculations were performed using the 7Q 10 streamflows of 13.2 cfs summer and 17.0 cfs winter at
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NC0020591
the 6.0 and 8.0 MGD flow tiers. At both flow tiers the TRC limit is capped at 28 µg/L and will be maintained
in the permit. The calculations yielded the same Ammonia results as previously run for the current permit
at 6.0 MGD; thus the current Ammonia limits will be maintained.
6.4. Reasonable Potential Analysis RPA) for Toxicants
If applicable, conduct RPA analysis and complete information below. The need for toxicant limits is based
upon a demonstration of reasonable potential to exceed water quality standards (RP), 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/z 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.
The current permit requires effluent and upstream hardness monitoring for use in the RPA. Effluent
Hardness data were obtained via DMR; instream Hardness was not monitored based on a misunderstanding
of the monitoring coalition waiver in that the monitoring coalition does not monitor for Hardness. Five
upstream samples were requested on 4/19/2024; results were received on 5/9/2024. They averaged 11.48
mg/L, below the default value of 25 mg/L; the default value was used in the RPA.
An RPA was conducted on effluent toxicant data collected between February 2020 and July 2024 at 6.0
and 8.0 MGD flow tiers for the following parameters: arsenic, cadmium, total chromium, copper, cyanide,
lead, molybdenum, nickel, selenium, silver, and zinc. 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 (RP):
o At 6.0 MGD:
■ Total Copper: MA = 19.1 µg/L; DM = 22.8 µg/L
■ Bis(2-ethylhexyl) phthalate: MA = 2.6 µg/L
o At 8.0 MGD:
14
■ Total Copper MA = 16.3 µg/L; DM = 19.7 µg/L
■ Bis(2-ethylhexyl) phthalate: MA = 2.0 µg/L
• 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: None at either
flow tier.
• 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:
o At 6.0 MGD: Arsenic, Beryllium, Total Phenolic Compounds, Total Cadmium, Total
Chromium, Cyanide, Total Lead, Molybdenum, Total Nickel, Total Selenium, Total Silver
and Total Zinc.
o At 8.0 MGD: Beryllium, Total Phenolic Compounds, Total Cadmium, Total Chromium,
Cyanide, Total Lead, Molybdenum, Total Nickel, Total Selenium, Total Silver, and Total
Zinc.
• POTW Effluent Pollutant Scan Review: Three effluent pollutant scans (April 2021, July 2022 and
July 2023) were evaluated for additional pollutants of concern. The following parameters were
detected in the scans and evaluated: Chloroform, Dichlorobromomethane, Toluene.
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NC0020591
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: None at both flow tiers.
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: None at both
flow tiers.
o At both flow tiers the following metals were reported as non -detect at higher than
recommended PQLs, resulting in RP:
Parameter
Results, µg/L
Frequency
Recommended PQL,µgm
Total Cadmium
< 2
3 of 22 samples
0.5
Total Lead
< 10
4 of 22 samples
2
Total Selenium
< 10
5 of 22 samples
1
Total Silver
< 5
3 of 22 samples
1
Recommended PQLs have been added to the Effluent Pollutant Scan analyte list for
Cadmium, Lead, Selenium and Silver.
If applicable, attach a spreadsheet of the RPA results as well as a copy of the Dissolved Metals
Implementation Fact Sheet for freshwater/saltwater to this Fact Sheet. Include a printout of the RPA
Dissolved to Total Metal Calculator sheet if this is a Municipality with a Pretreatment Program.
6.5. 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 Major POTW with a chronic WET limit of 41% at
6.0 MGD flow and 48% at 8.0 MGD flow, monitored quarterly. No changes are proposed.
6.6. 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/L) 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/L) and/or if any individual value exceeds a TBEL value of 47 ng/L.
The current permit has a MMP special condition with the requirements to develop an MMP and submit a
summary of actions toward mercury minimization with the permit application. An MMP, dated 3/7/2023,
was provided by the Permittee upon request for the summary report; this report was received on 5/6/2024.
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NCO020591
Describe proposed permit actions based on mercury evaluation: Since no annual average mercury
concentration exceeded the WQBEL at either flow tier, and no individual mercury sample exceeded the
TBEL (Table 5), no mercury limit is required. Since the facility is > 2 MGD and has reported quantifiable
levels of mercury (> 1 ng/L), the Mercury Minimization Plan (MMP) requirement is maintained in the
permit.
Table 5. Mercury Effluent Data Summary
2020
2021
2022
2023
2024
# of Samples
6
5
6
6
2
Annual Average Cone. ng/L
2.9
1.4
1.3
1.8
1.3
Maximum Conc., ng/L
4.58
2.49
2.55
4.00
2
TBEL, ng/L
47
WQBEL, ng/L
9.30 at 6.0 MGD
N 24.77 at 8.0 MGD
6.7. Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation within
this permit: The facility lies in a section of Third Creek upstream of a section impaired for Turbidity that
received a TMDL for this parameter in 2011. According to the TMDL, Permittees that discharge directly
to, or upstream of the impairment, yet still downstream of an unimpaired ambient monitoring site are subject
to the TMDL. Third Creek WWTP lies upstream of Ambient Monitoring Station Q3932000, which is at the
upstream boundary of the impairment, and therefore is subject to the TMDL. However, calculated TSS
loads at the permitted maximum of 30 mg/L resulted in an insignificant contribution of 0.4542 tons/day or
3.4% of the total TSS load at Ambient Monitoring Station Q3934500 at the downstream end of the
impairment. As a result, no reduction in TSS is required for Third Creek WWTP per the Turbidity TMDL,
and therefore no permit changes were made for this parameter. Review of effluent data over the past 4.5
years (August 2019 — February 2024) revealed an average of 5.3 mg/L TSS, which is well below the
permitted maximum (Table 1).
The current permit contains tiered nutrient limitations at 6.0 MGD Phase I and II with the latter phase limits
carried over to 8.0 MGD upon expansion (Table 4). These limits were set in light of a potential nutrient
strategy or TMDL for High Rock Lake, which is impaired for Chlorophyll -a, pH and Turbidity.
Chlorophyll -a and pH impairments are associated with algal blooms that are caused by excessive nutrient
loadings to the lake. The facility is a potential source of nutrients to High Rock Lake as the receiving stream
flows to High Rock Lake via the Yadkin River. Weekly effluent Total Nitrogen and Total Phosphorous
monitoring have been in the permit since 2001 to aid in the development of a High Rock Lake nutrient
management strategy, and nutrient loading limits were placed in the permit in 2011 (Table 4).
Table 4. Nutrient Loading limits and compliance schedule under current permit.
Design Flow
Total Nitrogen
Loading (lb/yr)
Total Phosphorus
Loading (lb/yr)
Phase Compliance
Date
6.0 MGD Phase I - Interim
182,650
36,530
October 1, 2016
6.0 MGD Phase II - Final
76,321
15,768
October 1, 2027
8.0 MGD
76,321
15,768
---
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NC0020591
The final annual nutrient load limits (for 6.0 MGD Phase II and 8.0 MGD) were calculated in 2009 from
average monthly loads calculated from data collected in 2006-2008. Average monthly flow for that period
was 1.3 MGD; average effluent nutrient concentrations were 19.1 mg/L TN and 4.0 mg/L TP. The resulting
average daily loads (209.1 lb/mo TN and 43.2 lb/mo TP) were then multiplied by 365 days/yr for the final
annual load limits in Table 4.
Final Annual Load Limit = avg MGD X avg nutrient conc./day X 8.34 X 365 day/yr
The interim load limits (for 6.0 MGD Phase I) were calculated using half of the average nutrient
concentrations noted above (i.e., 10.0 mg/L TN and 2.0 mg/L TP) for a permit modification in 2012.
Interim Annual Load Limit = 6.0 MGD X (half of avg nutrient conc./day) X 8.34 X 365 day/yr
The facility had completed Phase I upgrade to 6.0 MGD as described in the Engineer's Certification dated
October 29, 2015. Since that time, three years of data had accumulated for nutrient loading, averaging
12,211 lbs/yr TP load and 17,591 lbs/yr TN load. Although these loadings met the above limits, the facility
had expressed concerns about meeting the limits per the current permit compliance schedule for 6.0 MGD
Phase II and requested a permit modification via correspondence to DWR in May -December 2014 to extend
the 6.0 MGD Phase II Compliance Date to October 1, 2026. A second letter from the Permittee, dated April
19, 2018, requested further extension to October 1, 2029, citing the slowed development of the High Rock
Lake nutrient TMDL/management strategy. A discussion was held on June 7, 2018 and an extended
compliance date was agreed for October 1, 2027 to encompass one permit cycle plus 1.5 years to
accommodate facility upgrade efforts to meet the more stringent nutrient limits at the permitted flows. The
agreed -upon extended compliance date was added to the permit in 2019.
Annual effluent nutrient loadings from 2019 — 2023 are found to be meeting the 6.0 MGD Phase II limits
(Table 1 above). No changes to the nutrient loading limits or compliance schedule were made to the permit.
To reduce redundancy in the permit limits, the 6.0 MGD Phase I and Phase 11 effluent requirement sheets
were combined into a single 6.0 MGD sheet with Phase I and II nutrient load limits.
The current permit has a special condition [A.(7.)] with formulae to calculate monthly nutrient mass load,
which is maintained as A.(6.). Similarly, the nutrient load compliance schedule is maintained as A.(7.).
The current permit has a special condition [A.(9.)] describing a nutrient reopener to adjust the permit should
the High Rock Lake TMDL or nutrient management strategy be implemented before the facility expands
to 6.0 MGD Phase II. The Division is working with the North Carolina Nutrient Criteria Development Plan
Scientific Advisory Council to develop criteria for TN, TP or related parameters. The nutrient reopener was
modified in 2019 to include nutrient criteria along with nutrient TMDL and/or management strategy options
to be developed. As this condition is redundant with language in the previous condition, the re -opener
condition is removed from the permit.
To better understand the total nitrogen in the effluent, weekly monitoring for Total Kjeldahl Nitrogen
(TKN) and Nitrate -Nitrite (NO3+NO2) has been added to the permit. In addition, monthly instream
monitoring for nutrients (TN, TKN, NO3+NO2 and TP) has been added to the permit with the waiver for
participation in the Yadkin -Pee Dee River Basin Association monitoring coalition to be consistent with
other instream monitoring requirements.
6.8. Other WQBEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: In the Chemical
Addendum, the facility reported only 1,4-Dioxane as expected due to their receiving industrial waste from
metal finishers, but they did not sample their effluent for this chemical. The receiving stream lies —45 miles
from the nearest downstream water supply watershed boundary for the Tuckerman Reservoir (a.k.a. High
Page 11 of 20

NC0020591
Rock Lake) in the Yadkin River. To assess the actual levels of 1,4-Dioxane in the effluent, a quarterly
monitoring requirement has been added to the permit with the option for the Permittee to request re-
evaluation of 24 months of data for possible monitoring reduction to annually. In addition, a permit re -
opener special condition was added to the permit.
Due to the pervasiveness of PFAS chemicals in the environment, the presence of a downstream water supply
and the facility's receiving industrial waste from three metal finishers and two textiles, both categories
recognized by the EPA as potential PFAS sources, quarterly PFAS monitoring will be required in the permit
along with pretreatment requirements as recommended by EPA guidance (memo: 12/5/2022). See Section
10 Monitoring Requirements below for details.
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 2H0107(c)(2)(B), 40CFR 122.47, and EPA May 2007 Memo: The current permit has a three-year
compliance schedule for Copper and Bis(2-ethylhexyl)phthalate limits at the 6.0 MGD flow tier, with the
compliance date set for February 1, 2023. Since this date has passed, the compliance schedule has been
removed from the permit. No other compliance schedule is proposed.
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)
Municipals (if not applicable, delete and skip to Industrials)
Are concentration limits in the permit at least as stringent as secondary treatment requirements (30 mg1L
BOD51TSS for Monthly Average, and 45 mg/L for BOD51TSS for Weekly Average). YES.
If NO, provide a justification for alternative limitations (e.g., waste stabilization pond). NA.
Are 85% removal requirements for BOD51TSS included in the permit? YES. Review of the influent and
effluent data for both parameters found 9 occurrences of < 85% BOD removal and 20 occurrences of <
85% TSS removal. Several of these occurrences involve low influent BOD/TSS concentrations but also
relatively high effluent concentrations.
If NO, provide a justification (e.g., waste stabilization pond). 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 213.0201. 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.
Page 12 of 20

NC0020591
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: The above change is based on evaluation
of updated effluent copper and hardness data.
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 213.0500; 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.
To identify PFAS concentrations in waters classified as Water Supply (WS) waters, monitoring
requirements are to be implemented in NPDES permits with pretreatment programs that discharge to WS
waters. Since the WWTP's outfall is —45 miles upstream of the nearest water supply boundary and as the
WWTP receives wastewater from industries recognized as potential sources of PFAS via a pretreatment
program, monitoring of PFAS chemicals has been added to the permit. Currently, EPA Method 1633 is
finalized (as of January 31, 2024) but not yet published in the Federal Register as an approved test method.
Upon evaluation of laboratory availability and capability to perform the analytical method, it was
determined that the sampling may be conducted using the 3rd draft method or more recent version of Method
1633. Influent and effluent quarterly monitoring have been added to the permit with analysis using the
method until Method 1633 becomes approved via publication in the Federal Register. Sampling using the
method shall take effect the first full calendar quarter following 6 months after the effective date of the
permit to provide the City time to select a laboratory, develop a contract, and begin collecting samples.
Data shall submit data to the Division via a spreadsheet provided by the Division. Effective 6 months after
the final Method 1633 is published in the Federal Register as part of 40 CFR 136, the City shall conduct
influent and effluent monitoring using the approved method and submit data via eDMR.
In addition to monitoring at the WWTP, the City shall identify and monitor SIUs suspected of discharging
PFAS compounds [see A.(8.)(c.)(i.)] within 6 months of the permit effective date. The City shall update
their Industrial Waste Survey (IWS) to identify indirect dischargers of PFAS contributing to concentrations
experienced at the Third Creek WWTP. A summary of information learned during this process will be
provided as part of the 2024 Pretreatment Annual Report (PAR). Within 6 months of completion of the
IWS, the City shall begin sampling of indirect dischargers identified as potential PFAS sources at a
quarterly frequency. For a detailed outline of the specific PFAS requirements, see Special Condition A.(10.)
PFAS Monitoring Requirements.
Page 13 of 20

NC0020591
As the Third Creek WWTP accepts influent wastewater from industrial facilities that are potential sources
of 1,4-Dioxane via the approved pretreatment program, and as the discharge lies upstream of a WS water,
monthly effluent monitoring for 1,4-Dioxane as well as a 1,4-Dioxane reopener condition have been added
to the permit. After a 24-month sampling period, the Permittee may request the Division conduct a review
of submitted data for assessment and approval of a 1,4-Dioxane monitoring frequency reduction from
monthly to quarterly.
For instream monitoring, refer to Section 4.
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. Effective December 21, 2020, NPDES regulated facilities will be required to submit
additional NPDES reports electronically. This permit contains the requirements for electronic reporting,
consistent with Federal requirements.
12. Summary of Proposed Permitting Actions:
Permit conditions, limits and their proposed changes at 6.0 (Phases I and II) and 8.0 MGD flow tiers are
summarized in Tables 6 and 7 below.
Table 6. Current Permit Conditions and Proposed Changes at 6.0 MGD i.
Parameter
Current Permit
Proposed Change
T Basis for Condition/Change
MA = 6.0 MGD
Flow
Monitor influent or
No change
15A NCAC 2B .0505
effluent continuously
Total Monthly Flow
Monitor monthly
No change
To calculate Total Nitrogen and
Total Phosphorus loads
Summer:
MA = 12.0 mg/L
WQBEL. Speculative limits for a
WA — 18.0 mg/L
proposed 9.0 MGD in Finding of No
BOD5
Winter:
MA — 24.0 mg/L
No change
Significant Impact and Environment
WA = 36.0 mg/L
(NCDENR-DWQ 2010).
Monitor influent &
effluent daily
MA = 30.0 mg/L
TBEL. Secondary treatment
TSS
WA = 45.0 mg/L
No change
standards / 40 CFR 133 / 15A NCAC
Monitor influent &
2B
effluent daily
.0406.
Page 14 of 20

NC0020591
Parameter
Current Permit
Proposed Change
Basis for Condition/Change
Summer:
MA = 2.1 mg/L
WQBEL. Calculation results based
WA — 6.3 mg/L
on NC's use of EPA criteria in
Ammonia (NH3-N)
Winter:
No change
developing 1.0 mg/L summer and 1.8
MA — 4.7 mg/L
mg/L winter in wasteload allocations
WA = 14.1 mg/L
to protect against NH3-N toxicity.
Monitor effluent daily
See WLA sheet attached.
MA = 200 /100 mL
No change in effluent
WQBEL. WQ standard, 15A NCAC
Fecal Coliform
WA = 400 /100 mL
Add instream
2B .0200.
Receiving stream may be impaired
Monitor effluent daily
monitoring
(rated as Data Inconclusive).
Total Residual
DM = 28.0 µg/L
No change
WQBEL. Capped per NH3/TRC
Chlorine
Monitor effluent daily
WLA Calculation.
pH
Between 6 and 9 SU
No change
WQBEL. WQ standard, 15A NCAC
Monitor effluent daily
2B .0200.
DA > 5 mg/L
DO
Monitor effluent daily
No change
WQBEL. State WQ standard, 15A
Monitor & report
NCAC 213.0200.
instream
Monitor & report
Temperature
effluent daily
Monitor & report
No change
15A NCAC 213.0500
instream
Monitor & report
Conductivity
effluent daily
No change
15A NCAC 213.0500; presence of
Monitor & report
SIUs.
instream
15A NCAC 213.0500; weekly
monitoring was set in 2001 for
Monitor & report
Add monthly instream
development of nutrient management
Total Nitrogen (TN)
effluent weekly
monitoring
strategy. Instream monitoring added
to address concerns of nutrients in
the lower Yadkin River basin
entering High Rock Lake
Monitor effluent
Anticipated Nutrient Management
TN Load (lb/mo)
monthly
No change
Strategy / TMDL for High Rock
Lake
TN Load Phase 1
182,650 lb/yr
WQBEL. Calculated annual load
(Jan 1 — Dec 31)
Monitor effluent
No change
from effluent TN concentrations
annually
and monthly flows from 2006-2008.
76,321 lb/yr
WQBEL. Calculated annual load
TN Load, Phase 1
(effective 10/1/2027)
No change
from effluent TN concentrations and
(Jan 1 —Dec 31)
Monitor effluent
monthly flows from 2006-2008.
annually
Page 15 of 20

NC0020591
Parameter
Current Permit
Proposed Change
Basis for Condition/Change
Total Kjeldahl
Monitor weekly
Add monthly instream
To better understand nitrogen
Nitrogen (TKN)
monitoring
concentrations.
Nitrite -Nitrate
Monitor weekly
Add monthly instream
To better understand nitrogen
(NO3+NO2)
monitoring
concentrations.
15A NCAC 2B.0500; weekly
monitoring was set in 2001 for
Total Phosphorus
Monitor & report
Add monthly instream
development of nutrient management
(TP)
effluent weekly
monitoring
strategy. Instream monitoring added
to address concerns of nutrients in
the lower Yadkin River entering
High Rock Lake.
Monitor effluent
Anticipated Nutrient Management
TP Load (lb/mo)
monthly
No change
Strategy / TMDL for High Rock
Lake
TP Load Phase I
36,530 lb/yr
WQBEL. Calculated annual load
(Jan 1 — Dec 31)
Monitor effluent
No change
from '/z effluent TP concentrations
annually
and monthly flows from 2006-2008.
TP Load, Phase It
15,768 lb/yr
(effective 10/l/2027)
WQBEL. Calculated annual load
(Jan 1 — Dec 31)
Monitor effluent
No change
from effluent TP concentrations and
annually
monthly flows from 2006-2008.
Quarterly effluent and
ased on adoption of hardness -
Total Hardness
upstream monitoring;
instream monitoring
Remove instream
dependent metals. Monitoring
waived if member of
monitoring waiver.
coalitions will not sample for
monitoring coalition.
Hardness.
MA = 28.3 µg/L
MA = 19.1 µg/L
WQBEL. RP found with adjusted
DM = 35.9 µg/L
DM = 22.8 µg/L
stream standards based on updated
Total Copper
Monitor monthly
Monitor monthly
Hardness data.
Three-year compliance
Remove compliance
Compliance date has passed.
schedule
schedule
MA = 2.6 µg/L
No change in limit
Bis(2-ethylhexyl)
Monitor monthly
Monitor monthly
WQBEL. RP found.
phthalate
Three-year compliance
Remove compliance
Compliance date has passed.
schedule
schedule
Total Mercury
Mercury Minimization
Reword requirement
Statewide Mercury TMDL
Plan (MMP)
to maintain MMP
Add quarterly
monitoring with the
option to request
Based on industrial user types known
1,4-Dioxane
No requirement
monitoring reduction
to be potential sources, data are
after 24 months.
needed to evaluate.
Add reopener
condition.
Page 16 of 20

NC0020591
Parameter
Current Permit
Proposed Change
Basis for Condition/Change
Add quarterly
PFAS
No requirement
monitoring with
EPA recommendations (guidance
pretreatment
memo, 12/5/2022).
requirements
Ceriodaphnia dubia
WQBEL. No toxics in toxic amounts.
Chronic Toxicity
Pass/Fail at 41%
Update language in
15A NCAC 2B.0200 and 15A NCAC
effluent.
special condition.
2B.0500
Monitor quarterly
Update sample years
40 CFR 122
Effluent Pollutant
Conduct three times
to 2026, 2027, 2028.Add
Scan
per permit cycle
PQLs to
Higher than recommended PQLs
Cadmium, Lead,
used, resulting in RP based on high
Selenium & Silver
non -detects.
Electronic Reporting
Special Condition
Update language in
In accordance with EPA Electronic
special condition.
Reporting Rule 2015.
Footnote.
1. MGD = Million Gallons per Day; MA = Monthly Average; WA = Weekly Average; DA = Daily
Average; DM = Daily Maximum.
Table 7. Current Permit Conditions and Proposed Changes at 8.0 MGD'.
Parameter
Current Permit
Proposed Change
T Basis for Condition/Change
MA = 8.0 MGD
Flow
Monitor influent or
No change
15A NCAC 213.0505
effluent continuously
Summer:
MA = 12.0 mg/L
WA = 18.0 mg/L
WQBEL. Speculative limits for a
BODS
Winter:
No change
proposed 9.0 MGD in Finding of No
`
MA = 24.0 mg/L
Significant Impact and Environment
WA = 36.0 mg/L
(NCDENR-DWQ 2010).
Monitor influent &
effluent daily
MA = 30.0 mg/L
TBEL. Secondary treatment
TSS
WA — 45.0 mg/L
No change
standards / 40 CFR 133 / 15A NCAC
Monitor influent &
213
effluent daily
.0406.
Summer:
WQBEL. Calculation results based
MA = 1.7 mg/L
on NC's use of EPA criteria in
WA — 5.1 mg/L
developing 1.0 mg/L summer and 1.8
Ammonia (NH3-N)
Winter:
No change
mg/L winter in wasteload allocations
MA = 4.1 mg/L
to protect against NH3-N toxicity.
WA 12.3 mg/L
See WLA sheet attached.
Monitor effluent daily
Page 17 of 20

NC0020591
Parameter
Proposed Change
Basis for Condition/Change
MA = 200 /100 mL
No change in effluent
WQBEL. WQ standard, 15A NCAC
Fecal Coliform
WA = 400 /100 mL
Add instream
2B .0200.
Receiving stream may be impaired
Monitor effluent daily
monitoring
(rated as Data Inconclusive).
Total Residual
DM = 28.0 µg/L
No change
WQBEL. Capped per NH3/TRC
Chlorine
Monitor effluent daily
WLA Calculation.
pH
Between 6 and 9 SU
No change
WQBEL. WQ standard, 15A NCAC
Monitor effluent daily
2B .0200.
DA > 5 mg/L
DO
Monitor effluent daily
No change
WQBEL. State WQ standard, 15A
Monitor & report
NCAC 213.0200.
instream
Monitor & report
Temperature
effluent daily
Monitor & report
No change
15A NCAC 213.0500
instream
Monitor & report
Conductivity
effluent daily
No change
15A NCAC 213.0500; presence of
Monitor & report
SIUs.
instream
15A NCAC 213.0500; weekly
monitoring was set in 2001 for
Monitor & report
Add monthly instream
development of nutrient management
Total Nitrogen (TN)
effluent weekly
monitoring
strategy. Instream monitoring added
to address concerns of nutrients in
the lower Yadkin River basin
entering High Rock Lake
Monitor effluent
Anticipated Nutrient Management
TN Load (lb/mo)
monthly
No change
Strategy / TMDL for High Rock
Lake
TN Load
76,321 lb/yr
WQBEL. Calculated annual load
(Jan 1 — Dec 31)
Monitor effluent
No change
from effluent TN concentrations and
annually
monthly flows from 2006-2008.
Total Kjeldahl
Monitor weekly
Add monthly instream
To better understand nitrogen
Nitrogen (TKN)
monitoring
concentrations.
Nitrite -Nitrate
Monitor weekly
Add monthly instream
To better understand nitrogen
(NO3+NO2)
monitoring
concentrations.
15A NCAC 213.0500; weekly
monitoring was set in 2001 for
Total Phosphorus
Monitor & report
Add monthly instream
development of nutrient management
(TP)
effluent weekly
monitoring
strategy. Instream monitoring added
to address concerns of nutrients in
the lower Yadkin River basin
entering High Rock Lake.
Page 18 of 20

NCO020591
Parameter
Current Permit
Proposed Change
Basis for Condition/Change
Monitor effluent
Anticipated Nutrient Management
TP Load (lb/mo)
monthly
No change
Strategy / TMDL for High Rock
Lake
TP Load
15,768 lb/yr
WQBEL. Calculated annual load
(Jan 1 — Dec 31)
Monitor effluent
No change
from effluent TP concentrations and
annually
monthly flows from 2006-2008.
Quarterly effluent and
Based on adoption of hardness -
Total Hardness
upstream monitoring;
instream monitoring
Remove instream
dependent metals. Monitoring
waived if member of
monitoring waiver.
coalitions will not sample for
monitoring coalition.
Hardness.
MA = 28.3 µg/L
MA = 16.3 µg/L
WQBEL. RP found with adjusted
Total Copper
DM = 35.9 µg/L
DM = 19.7 µg/L
stream standards based on updated
Monitor monthly
Monitor monthly
Hardness data.
Bis(2-ethylhexyl)
MA = 2.0 µg/L
No change
WQBEL. RP found.
phthalate
Monitor monthly
Total Mercury
Mercury Minimization
Reword requirement
Statewide Mercury TMDL
Plan (MMP)
to maintain MMP
Add quarterly
monitoring with
option to request
Based on industrial user types known
1,4-Dioxane
No requirement
monitoring reduction
to be potential sources, data are
after 24 months.
needed to evaluate.
Add reopener
condition.
Add quarterly
PFAS
No requirement
monitoring with
EPA recommendations (guidance
pretreatment
memo, 12/5/2022).
requirements
Ceriodaphnia dubia
WQBEL. No toxics in toxic amounts.
Chronic Toxicity
Pass/Fail at 48%
Update language in
15A NCAC 213.0200 and 15A NCAC
effluent.
special condition.
213.0500
Monitor quarterly
Update sample years
40 CFR 122
Effluent Pollutant
Conduct three times
to 2026, 2027, 2028.Add
Scan
per permit cycle
PQLs to
Higher than recommended PQLs
Cadmium, Lead,
used, resulting in RP based on high
Selenium & Silver
non -detects.
Electronic Reporting
Special Condition
Update language in
In accordance with EPA Electronic
special condition.
Reporting Rule 2015.
Fnntnnte
1. MGD = Million Gallons per Day; MA = Monthly Average; WA = Weekly Average; DA = Daily
Average; DM = Daily Maximum.
Page 19 of 20

NC0020591
13. Public Notice Schedule
Permit to Public Notice: xx/xx/2024
Per 15A NCAC 21-1.0109 & .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 any questions regarding any of the above information or on the attached permit, please contact
Gary Perlmutter at [phone] or via email at gar perlmutterkdeq.nc. og_v.
15. Fact Sheet Addendum (if applicable)
Were there any changes made since the Draft Permit was public noticed (Yes/No):
If Yes, list changes and their basis below:
16. Fact Sheet Attachments (if applicable):
• Three Effluent Pollutant Scans
• Four 2nd species toxicity test reports
• Sludge management description
• Chemical Addendum
• NPDES Pretreatment POC form
• Monitoring Report Violations
• WET Test summary, p. 73
• Compliance Inspection report, 1/25/2024
• Waste load allocations for TRC and NH3-N
• Instream hardness data
• RPA sheets at 6.0 and 8.0 MGD
• RPA Spreadsheet Summary and dissolved to total metal calculator
• Dissolved Metals Fact Sheet memo
• Mercury WQBEL/TBEL evaluations
Page 20 of 20

Meritech, Inc.
Environmental Laboratory
Laboratory Certification No.165
Contact: Brandy Johnson
Client: City of Statesville
P.O. Box 1111
Statesville, NC 28687
Report Date: 4/28/2021
NPDES#: NC0020591
Project: PPA-4th Creek
Date Sample Rcvd: 4/15/2021
Meritech Work Order #
04152142 Sample: Effluent Composite
4/14-15/21
Parameters
Result
Analysis Date
Reporting Urni
Method
Total Dissolved Solids
175 mg/L
4/16/21
10.0 mg/L
SM 2540C
Ammonia, Nitrogen
13.6 mg/L
4/19/21
0.1 mg/L
EPA 350.1
TKN
17.9 mg/L
4/20/21
0.20 mg/L
EPA 351.1
Nitrate/Nitrite, Nitrogen
0.16 mg/L
4/21/21
0.10 mg/L
EPA 353.2
Nitrogen, total
18.1 mg/L
4/21/21
0.20 mg/L
EPA 353.2
Antimony, total
<0.025 mg/L
4/23/21
0,025 mg/L
EPA 200.7
Arsenic, total
<0.010 mg/L
4/23/21
0.010 mg/L
EPA 200.7
Beryllium, total
<0.005 mg/L
4/23/21
0.005 mg/L
EPA 200.7
Cadmium, total
<0.002 mg/L
4/23/21
0.002 mg/L
EPA 200.7
Chromium, total
0.039 mg/L
4/23/21
0,005 mg/L
EPA 200.7
Copper, total
0.005 mg/L
4/23/21
0.002 mg/L
EPA 200.7
Lead, total
<0.010 mg/L
4/23/21
0.010 mg/L
EPA 200.7
Mercury, total
<0.0002 mg/L
4/20/21
0.0002 mg/L
EPA 245.1
Nickel, total
0.078 mg/L
4/23/21
0.010 mg/L
EPA 200.7
Phosphorus, total
0.947 mg/L
4/22/21
0.020 mg/L
EPA 200.7
Selenium, total
<0.010 mg/L
4/23/21
0.010 mg/L
EPA 200.7
Silver, total
<0.005 mg/L
4/23/21
0.005 mg/L
EPA 200.7
Thallium, total
<0.040 mg/L
4/23/21
0.040 mg/L
EPA 200.7
Zinc, total
0.026 mg/L
4/23/21
0.010 mg/L
EPA 200.7
Hardness (titration)
44 mg/L
4/22/21
1 mg/L
SM 2340C
EPA 625.1
Attached
4/23/21
EPA 625.1
Meritech Work Order #
04152143 Sample:
Effluent Grab
4/15/21
Parameters
Result
Analysis Date
Reporting Limit
Method
Cyanide, total
<0.005 mg/L
4/19/21
0.005 mg/L
EPA 335.4
Oil & Grease (HEM)
<5 mg/L
4/19/21
5 mg/L
EPA 1664B
Phenols, total
<0.010 mg/L
4/20/21
0.010 mg/L
EPA 420.1
EPA 624.1 +AA
Attached
4/16/21
EPP,624.1
I hereby certify thatl have reviewed and approve these data.
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone]fax.[phone]

MERITECH, INC.
Environmental Laboratories
Laboratory Certification #165
Client:
City of Statesville Meritech ID#: 04152143
Project:
PPA-4thCreek Analysis: 04/16/21
Client Sample ID:
Effluent Analyst: VWV
Sample Collection:
04/15/21 Dilution Factor: 1
Report Date: 04/20/21
EPA 624.1 VOLATILE ORGANICS
Parameter
Benzene
Dichlorobromomethane
Bromoform
Methyl Bromide
Carbon Tetrachloride
Chlorobenzene
Chloroethane
2-Chloroethyl vinyl ether
Chloroform
Methyl Chloride
Chlorodibromomethane
1,2-Dibromoethane
l,l-Dichloroethane
1,2-Dichloroethane
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,3-Dichlorobenzene
1, I -Dichloroethylene
trans-1,2-Dichloroethylene
1,2-Dichloropropane
cis- 1,3 -Dichloropropylene
trans- l,3-Dichloropropylene
Ethyl benzene
Methylene chloride
1,1,2,2-Tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-Trichloroethane
1,1,2-Trichloroethane
Trichloroethylene
Trichlorofluoromethane
Vinyl chloride
Additional Compounds
Acrolein
Acrylonitrile
I hereby certify that I have reviewed and approve these data.
Result
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
< 5.00 ug/L
< 1.00 ug/L
1.00 ug/L
< 5.00 ug/L.
< 5.00 ug/L
1.18 ug/L
< 5.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
< I.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L,
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L.
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
6.20 ug/L
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
< 5.00 ug/L
< 5.00 ug/L
<50.0 ug/L
<10.0 ug/L
Laboratory Repr ive
642 Tamco Road' Reidsville, NC 27320
[phone]' [e-mail]

Client:
Project:
Client Sample ID:
Sample Collection:
Report Date:
Parameter
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
Benzo(b)fluoranthene
Benzo(k)fluoranthene
Benzo(g,h,i)perylene
Benzyl butyl phthalate
B i s(2-chloroethoxy)methane
B is(2-chloroethyl)ether
Bis(2-chloroisopropyl)ether
Bis(2-etbylhexyl)phthalate
4-Bromophenyl phenyl ether
2-Chloronaphthalone
4-Chlorophenyl phenyl ether
Chrysene
Dibenzo(e,h)anthmcene
1,2-Dichlorobenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
3,3'.Dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
Di-n-butyl phthalate
2,4-Dinitrotoluene
2,6-Dinitrotoluene
Di-n-octyl phthalate
1,2-Dipbenylhydrazine
MERI TECH, INC.
Environmental Laboratories
Laboratory Certificate #165
City of Statesville Meritech EDM 04152142
PPA 4th Creek Analysis: 04/23/21
Effluent Extraction: 04/19/21
04/15/21
04/26/21
Analyst: PM
Dilution Factor: 1
EPA 625.1 SEMIVOLATILE ORGANICS
Riallk
Parameter
Result
<10 ug/L
Fluoranthene
<10 ug/L,
<10 ug/L
Fluorene
<10 ug/L
<10 ug/L
Hexachlorobenzene
<10 ug/L
<50 ug/L
Hexachlorobutadiene
<10 ug/L
<10 ug/L,
Hexachlorocyclopentadiene
<50 ug/L
<10 ug/L
Hexachloroethane
<10 ug/L
<10 ug/L
Indeno(I,2,3-cd)pyrene
<10 ug/L
<10 ug/L
Isophorone
<10 ug/L
<10 ug/L
2-Methylnaphthalene
<10 ug/L
<10 ug/L
Naphthalene
<10 ug/L
<10 ug/L
Nitrobenzene
<10 ug/L
<10 ug/L
N-Nitrosodimethylamine
<10 ug/L
<10 ug/L
N-Nitrosodi-n-propylamine
<10 ug/L
11.1 ug/L
N-Nitrosodiphenylamine
<10 ug/L
<10 ug/L
Phenanthrene
<10 ug/L
<10 ug/L
Pyrene
<10 ug/L
<10 ug/L
1,2,4-Trichlorobenzene
<10 ug/L
<10 ug/L
<10 ug/L
4-Chloro-3-methylphenol
<10 ug/L
<10 ug/L
2-Chlorophenol
<10 ug/L
<10 ug/L
2,4.Dichlorophenol
<10 ug/L
<10 ug/L
2,4-Dlmethylphenol
<10 ug/L
<50 ug/L
2,4-Dinitrophenol
<50 ug/L
<10 ug/L
4,6.Dinitro-2-methylphenol
<50 ug/L
<10 ug/L.
2-Nitrophenol
<10 ug/L
<10 ug/L
4-Nitrophenol
<50 ug/L
<10 ug/L
Pentachlorophenol
<50 ug/L
<10 ug/L
Phenol
<10 ug/L
<10 ug/L
2,4,6-Trichlorophenol
<10 ug/L
<10 ug/L
I hereby certify that I have reviewed and approve these data.
Laboratory Representative
642 Tamco Road * Reidsville, NC 27320
[phone] * [e-mail]

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Meritech, Inc.
Environmental Laboratory
•'.,'" Laboratory Certification No.165
Contact: Brandy Johnson Report Date: 8/5/2022
Client: City of Statesville NPDES#: NCO020591
P.O. Box illl Project: PPA-3rd Creek
Statesville, NC 28687 Date Sample Rcvd: 7/12/2022
Meritech Work Order # 07122282 Sample: Effluent Composite 7/11-12/22
Parameters Result Analysis Date Reporting Limit Method
Total Dissolved Solids
162 mg/L
7/13/22
10.0 mg/L
SM 2540C
Ammonia, Nitrogen
<0.1 mg/L
1 7/13/22
0.1 mg/L
EPA 350.1
TKN
0.92 mg/L
7/21/22
0.20 mg/L
EPA 351.1
Nitrate/Nitrite, Nitrogen
2.43 mg/L
7/14/22
0.10 mg/L
EPA 353.2
Nitrogen, total
3.35 mg/L
7/21/22
0.20 mg/L
EPA 353.2
Antimony, total
<0.025 mg/L
7/28/22
0.025 mg/L
EPA 200.7
Arsenic, total
<0.010 mg/L
7/28/22
0.010 mg/L
EPA 200.7
Beryllium, total
<0.005 mg/L
7/28/22
0.005 mg/L
EPA 200.7
Cadmium, total
<0.002 mg/L
7/28/22
0.002 mg/L
EPA 200.7
Chromium, total
<0.005 mg/L
7/28/22
0.005 mg/L
EPA 200.7
Copper, total
0.005 mg/L
7/28/22
0.002 mg/L
EPA 200.7
Lead, total
<0.010 mg/L
7/28/22
0.010 mg/L
EPA 200.7
Mercury, total
<0.0002 mg/L
7/19/22
0.0002 mg/L
EPA 245.1
Nickel, total
<0.010 mg/L
7/28/22
0.010 mg/L
EPA 200.7
Phosphorus, total
3.33 mg/L
7/27/22
0.020 mg/L
EPA 200.7
Selenium, total
<0.010 mg/L
8/4/22
0.010 mg/L
EPA 200.7
Silver, total
<0.005 mg/L
7/28/22
0.005 mg/L
EPA 200.7
Thallium, total
<0.020 mg/L
7/28/22
0.020 mg/L
EPA 200.7
Zinc, total
0.040 mg/L
7/28/22
0.010 mg/L
EPA 200.7
Hardness (titration)
32 mg/L
8/4/22
1 mg/L
SM 2340C
EPA 625.1
Attached
7/18/22
EPA 625.1
Meritech Work Order #
07122283 Sample: Effluent Grab
7/12/22
Parameter
Result ,Analysis Date
Reporting Limit
Method
Cyanide, total
<0.005 mg/L 7/18/22
0.005 mg/L
EPA 335.4
Oil & Grease (HEM)
<5.0 mg/L 7/18/22
5.0 mg/L
EPA 1664B
Phenols, total
0.012 mg/L 7/15/22
0.010 mg/L
EPA 420.1
EPA 624.1 +AA
Attached 7/15/22
EPA 624.1
hereby certify that/have reviewed and approve these data.�Q_
Narr
yyt fC
Laboratory Representative
642 Tamco Road, Reidsville, North Carolina
27320
tel.[phone] fax.[phone]

Client:
Project:
Client Sample ID:
Sample Collection:
Report Date:
Parameter
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
Benzo(b)fluoranthene
Benzo(k)fluoranthene
Benzo(g,h,i)perylene
Benzyl butyl phthalate
Bis(2-chloroethoxy)methane
Bis(2-chloroethyl)ether
Bis(2-chloroisopropyl)ether
Bis(2-ethylhexyi)phthalate
4-Bromophenyl phenyl ether
2-Chloronaphthalene
4-Chlorophenyl phenyl ether
Chrysene
Dibenzo(a,h)anthracene
1,2-Dichlorobenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
3,3'-Dichlorobenzidi ne
Diethyl phthalate
Dimethyl phthalate
Di-n-butyl phthalate
2,4-Dinitrotoluene
2,6-Dinitrotoluene
Di-n-octyl phthalate
1,2-Diphenylhydrazine
MERITECH, INC.
Environmental Laboratories
LaboratoryCertificate #165
City of Statesville Meritech ID#: 07122282
PPA 3rd Creek Analysis: 07/18/22
3rd Creek Effluent Extraction: 07/13/22
07/12/22
07/23/22
Analyst: PM
Dilution Factor: 1
EPA 625.1 SEMIVOLATILE ORGANICS
Result
Paramete
RM11
<10 ug/L
Fluoranthene
<10 ug/L
<10 ug/L
Fluorene
<10 ug/L
<10 ug/L
Hexachlorobenzene
<10 ug/L
<50 ug/L
Hexachlorobutadlene
<10 ug/L
<10 ug/L
Hexachlorocyclopentadiene
<50 ug/L
<10 ug/L
Hexachloroethane
<10 ug/L
<10 ug/L
Indeno(1,2,3-cd)pyrene
<10 ug/L
<10 ug/L
Isophorone
<10 ug/L
<10 ug/L
2-Methylnaphthalene
<10 ug/L
<10 ug/L
Naphthalene
<10 ug/L
<10 ug/L
Nitrobenzene
<10 ug/L
<10 ug/L
N-Nitrosodimethylamine
<10 ug/L
<10 ug/L
N-Nitrosodi-n-propylamine
<10 ug/L
<10 ug/L
N-Nitrosodiphenylamine
<10 ug/L
<10 ug/L
Phenanthrene
<10 ug/L
<10 ug/L
Pyrene
<10 ug/L
<10 ug/L
1,2,4.Trichiorobenzene
<10 ug/L
<10 ug/L
<10 ug/L
4-Chloro-3-methylphenol
<10 ug/L
<10 ug/L
2-Chlorophenol
<10 ug/L
<10 ug/L
2,4-Dicitlorophenol
<10 ug/L
<10 ug/L
2,4.Dimethylphenol
<10 ug/L
<50 ug/L
2,4-Dinitrophenol
<50 ug/L
<10 ug/L
4,6-Dinitro-2-methylphenol
<50 ug/L
<10 ug/L
2-Nitrophenol
<10 ug/L
<10 ug/L
4-Nitrophenol
<50 ug/L
<10 ug/L
Pentachlorophenol
<50 ug/L
<10 ug/L
Phenol
<10 ug/L
<10 ug/L
2,4,6-Trichlorophenol
<10 ug/L
<10 ug/L
I hereby certify that I have reviewed and approve these data. /�u �;�/ /� ��
Laboratory Representative
642 Tamco Road * Reidsville, NC 27320
[phone] * [e-mail]

MERI TECH, INC.
t' Environmental Laboratories
Laboratory Certification #166
Client:
City of Statesville
Meritech D)#: 07122283
Project:
3rd Creek WWTP
Analysis: 07/15/22
Client Sample ID:
3rd Creek Effluent
Analyst: VWV
Sample Collection:
07/12/22
Dilution Factor: 1
Report Date: 07/19/22
EPA 624.1 VOLATILE ORGANICS
Pararreter
Benzene
Dichlo rob rom om eth a ne
Bromofonn
Methyl Bromide
Carbon Tetrachloride
Chlorobenzene
Chloroethane
2-Chloroethyl vinyl ether
Chloroform
Methyl Chloride
Chlorodibromomethane
1,2-Dibromoethane
l,l-Dichloroethane
1,2-Dichloroethane
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,3-Dichlorobeazene
1,1-Dichloroethylene
trans-1,2-Dichloroethylene
1,2-Dichloropropane
cis-1,3-Dichloropropylene
trans-1,3-Dichloropropylene
Ethyl benzene
Methylene chloride
1,1,2,2-Tetrachloroethane
Tetrachloroethylene
Toluene
1, 1, 1 -Trichloroethane
1,1,2-Trichloroethane
Trichloroethylene
Tri ch lorofluoromethane
Vinyl chloride
Additional Compounds
Acrolein
Acrylonitrile
I hereby certify that I have reviewed and approve these data.
Result
< 1.00 ug/L
1.31 ug/L
1.00 ug/L
5.00 ug/L
1.00 ug/L
2 1.00 ug/L
5.00 ug/L
5.00 ug/L
3.08 ug/L
5.00 ug/L
1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
5 1.00 ug/L
< 1,00 ug/L
< 1.00 ug/L
1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
1.00 ug/L
E 1.00 ug/L
< 1.00 ug/L
< 1.00 ug/L
1.00 ug/L
1.00 ug/L
11.00 ug/L
<5.00 ug/L
<5.00 ug/L
<50.0 ug/L
<10.0 ug/L
Laboratory Re entative
642 Tameo Road * Reidsville, NC 27320
[phone] * [e-mail]

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N-Pi"4phenyramine 34433 .
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Meritech, Inc. .
Environmental Laboratory
Laboratory Certification No.165
ANA
Contact: Brandy Johnson Report Date:
Client: City of Statesville NPDES#:
P.O. Box 1111 Project:
Statesville, NC 28687 Date Sample Rcvd:
Meritech Work Order # 07182354 Sample: Effluent Composite
8/2/2023
NC0020591
3rd Creek WWTP
7/18/2023
7/17-18/23
Total Dissolved Solids
363 mg/L
7/20/23
10.0 mg/L
SM 2540C
Ammonia, Nitrogen
0.1 mg/L
7/20/23
0.1 mg/L
EPA 350.1
TKN
<0.20 mg/L
7/25/23
0.20 tng/L
EPA 351.2
Nitrate/Nitrite, Nitrogen
14.4 mg/L
7/21/23
0.10 ing/L
EPA 353.2
Nitrogen, total
14.4 mg/L
7/25/23
0.20 mg/L
EPA 353.2
Antimony, total
<0,025 mg/L
7/19/23
0.025 mg/L
EPA 200.7
Arsenic, total
<0.010 mg/L
7/19/23
0,010 mg/L
EPA 200.7
Beryllium, total
<0.005 mg/L
7/19/23
0.005 mg/L
EPA 200.7
Cadmium, total
4.002 mg/L
7/19/23
0,002 ing/L
EPA 200.7
Chromium, total
<0.005 mg/L
7/19/23
0.005 mg/L
EPA 200.7
Copper, total
0.014 mg/L
7/19/23
0.002 trig/L
EPA 200.7
Lead, total
<0.030 mg/L
7/19/23
0.010 mg/L
EPA 200.7
Mercury, total
<0.0002 mg/L
7/30/23
0.0002 tng/L
EPA 245.1
Nickel, total
<0.010 mg/L
7/19/23
0.010 mg/L
EPA 200.7
Phosphorus, total
8.34 mg/L
7/19/23
0.020 mg/L
EPA 200.7
Selenium, total
<0.010 mg/L
7/19/23
0,010 mg/L
EPA 200.7
Silver, total
<0.005 mg/L
7/19/23
0,005 mg/L
EPA 200.7
Thallium, total
<0.020 mg/L
7/19/23
0.020 mg/L
EPA 200.7
Zinc, total
0.048 mg/L
7/19/23
0.010 mg/L
EPA 200.7
Hardness (titration)
44 mg/L
7/20/23
4 mg/L
SM 2340C
EPA 625.1
Attached
7/27/23
EPA 625.1
Meritech Work Order # 07182355
Parameters Result
Sample: Effluent Grab
7/18/23
Cyanide, total
<0.005 mg/L 7/20/23 0.005 mg/L
EPA 335.4
Oil & Grease (HEM)
<5.0 mg/L 7/24/23 5.0 mg/L
EPA 1664B
Phenols, total
<0.010 mg/L 7/25/23 0.010 mg/L
EPA 420.1
EPA 624.1 + AA
Attached 7/27/23 -
EPA 624.1
1 hereby certify that I have
,
,�Y
reviewed and approve these data. 11ap��
Laboratory Representative
642 Tamco Road, Reidsville, North Carolina 27320
tel.[phone]fax.[phone]

t...
tr
Client:
Project:
Client Sample ID:
Sample Collection:
Report Date:
Parameter
Acenaphthene
Acenaphthylene
Anlhracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
Benzo(b)Fluoranthene
Benzo(k)nuoranthene
Benzo(g,h,i)peryleno
Benzyl butyl phthalate
Bis(2-chloroethoxy)methane
B is(2-ch I oroethyl )ether
Bis(2-chloroisopropypether
B 1s(2-elhylhexyl)phthalate
4-Bromophenyl phenyl ether
2-Chloronaphthalene
4-Chlorophenyl phenyl ether
Chrysene
Dibenzo(a,h)anthracene
1,20chlorobenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
3,Y-Dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
Di-n-butyl phthalate
2,4-Dinitrotoluene
2,6-Dinitrotoluene
Di-n-octyl phthalate
1,2-Diphenylhydrazine
MERI TECH, INC.
Environmental Laboratories
Laboratory Certificate #165
City of Statesville Meritech ID#: 07182354
3rd Creek Analysis: 07/27/23
3rd Creek Effluent Extraction: 07/24/23
07/18/23
07/28/23
Analyst: PM
Dilution Factor: I
EPA 625.1 SEMIVOLATILE ORGANICS
Result
Parameter
Result
<10 ug/L
Fluoranthene
<10 ug/L
<10 ug/L
Fluorene
<10 ug/L
<10 ug/L
Hexachlorobenzene
<10 ug/L
<50 ug/L
Hexachlorobutadiene
<10 ug/L
<10 ug/L
Hexachlorocyclopentadiene
<50 ug/L
<10 ug/L
Hexachloroethane
<10 ug/L
<10 ug/L
Indeno(1,2,3-ed)pyrene
<10 ug/L
<10 ug/L
Isophorone
<10 ug/L
<10 ug/L
2-Methy1naphthalene
<10 ug/L
<10 ug/L
Naphthalene
<10 ug/L
<10 ug/L
Nitrobenzene
<10 ug/L
<10 ug/L
N-Nltrosodimethylmnine
<10 ug/L
<10 ug/L
N-Nitrosodi-n-propylamine
<10 ug/l.
<10 ug/L
N-Nilrosodiphenylamine
<10 ug/L
<10 ug/L
Phenanthrene
<10 ug/L
<10 ug/L
Pyrene
<10 ug/L
<10 ug/L
1,2,4-Trichlorobenzene
<10 ug/L
<10 ug/L
<10 ug/L
4-Chloro-3-methylphenol
<10 ug/L
<10 ug/L
2-Chlorophenol
<10 ug/L
<10 ug/L
2,4-Dichlorophenol
<10 ug/L
<10 ug/L
2,4-Dimethylphenol
<10 ug/L
<50 ug/L
2,4-Dinitrophenol
<50 ug/L
<10 ug/L
4,6-Dinitro-2-methylphenol
<50 ug/L
<10 ug/L
2-Nitrophenol
<I0 ug/L
<10 ug/L
4-Nitrophenol
<50 ug/L
<10 ug/L
Pentachlorophenol
<50 ug/L
<10 ug/L
Phenol
<10 ug/L
<10 ug/L
2,4,6-Trichlorophenol
<10 ug/L
<10 ug/L
1 hereby certify that I have reviewed and approve these data. (/<,,�, — lw, /zN ( .
Laboratory Representative
642 Tamco Road * Reidsville, NC 27320
[phone] * [e-mail]

MERI TECH, INC.
Environmental Laboratories
Laboratory Certification #165
Client: City of Statesville Meritech ID#: 07182355
Project: 3rd Creek W WTP Analysis: 07/27/23
Client Sample ID: 3rd Creek W WTP Analyst: VWV
Sample Collection: 07/18/23
Dilution Factor: 1
Report Date: 08/02/23
EPA 624.1 VOLATILE ORGANICS
Parameter
Result
Benzene
< 1.00 ug/L
Dichlorobromomethane
1.08 ug/L
Bromoform
< 1.00 ug/L
Methyl Bromide
< 5.00 ug/L
Carbon Tetrachloride
< 1.00 ug/L
Chlorobenzene
< 1.00 ug/L
Chloroethane
<5.00 ug/L
2-Chloroethyl vinyl ether
< 5.00 ug/L
Chloroform
2.55 ug/L
Methyl Chloride
<5.00 ug/L
Chlorodibromomelhane
< 1.00 ug/L
1,2-Dibromoethane
< 1.00 ug/L
1,1-Diehloroethane
< 1.00 ug/L
1,2-Dichloroethane
< 1.00 ug/L
1,4-Dichlorobenzene
< 1.00 ug/L
1,2-Dichlorobenzene
< 1.00 ug/L
1,3-Dichlorobenzene
< 1.00 ug/L
I,I-Dichloroethylene
< 1.00 ug/L
trans-1,2-Dichloroethylene
< 1.00 ug/L
1,2-Dichloropropane
< 1.00 ug/L
cis-1,3-Dichloropropylene
< 1.00 ug/L
trans-1,3-Dichloropropylene
< 1.00 ug/L
Ethyl benzene
< 1.00 ug/L
Methylene chloride
< 1.00 ug/L
1,1,2,2-Tetrachloroethane
< 1.00 ug/L
Tetrachloroethylene
< 1.00 ug/L
Toluene
< 1.00 ug/L
I,1,1-Trichloroethane
< 1.00 ug/L
1,1,2-Trichloroethane
< 1.00 ug/L
Trichloroethylene
< 1.00 ug/L
Trichlorofluoromethane
<5.00 ug/L
Vinyl chloride
<5.00 ug/L
Additional Compounds
Acrolein
<50.0 ug/L
Acrylonitrile
<10.0 ug/L
I hereby certify that I have reviewed and approve these data.
492a hla� Laboratory Representative
642 Tamco Road * Reidsville, NC 27320
[phone] Ph * [phone] Fax

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34210
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3426
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34461
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34469
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34242
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3203
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34278
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Eft uelit Toxicity Report Form -Chronic Fathead Minnow Multi -Concentration Test Date:21312023
Facility: Statesville -Third Creek NPDES # NC00 20591 Pipe #: 001 County: Iredell
ratory; Meritech, Inc.
Signature of Operator in Re onsible Ch a/Em UP one Number
X
Signature of Laboratory Supervisor
MAIL ORIGINAL TO: Water Sciences Section
Aquatic Toxicology Branch
Division of Water Resources
1621 Mail Service Center
Raleigh, N.C. 27699-1621
Test Initiation DatelTime
1/24/2023
3:25 PM
Avg Wt1Surv. Control-TO.671
% Eff, Repl.
1
2
3
4
Control Surviving #
10
10
9
8
% Survival 92.5
Original #
10.25 Surviving #
Original #
Wtloriginal (mg)
10
10
10
10
0.699
0.675
0.585
0.528
10 10
10
10
10 10
10
10
0.619 0.594
0.622
0.521
Test Organisms
r Cultured In -House
(� Outside Supplier
Hatch Date: 1l23123
Survival 100.0 Hatch Time: 4:00-5;00 pm
Avg Wt (mg) 0.589
20.5 Surviving #
7
10
10
10
High Concentration
pH (SU) InitlFin
DO (mglL) initlFin
Temp (C) [nit/Fin
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mglL)
Alkalinity (mglL)
Conductivity (umhaslcm)
Chlorine(mglL)
Temp. at Receipt (°C)
10
10
10
10
10
10
9
10
10
10
10
0.510
0.622
0.642
0.552
0 1 2 3 4 5 R
7.38 1 7.85
7.57
1 7.76
7.37
1 7.67
7.50 ! 7.58
7.63 ! 7.64
7.52 1 7.61
7.60
! 7.56
8.36 1 7.52
8.20
! 7.35
8.26
1 7.73
8.20 1 7.92
8.15 1 7.54
8.13 / 7.72
8.15
! 7.50
24.7 1 24.5
24.8
1 24.0
25.5
! 24.0
25.5 1 24.8
25.3 1 24.3
24.9 1 24.3
25.9
124.5
1 2 3
1/23/2023
1/2 512 023
1/26/202 3
23.6
23.8
24.1
36
36
40
55
53
44
333
329
273
<0.1
<0.1
<0.1
1.6
1.2
1.7
Dilution H2O Batch # 87 88 89
Hardness (mglL) 46 46 4fi
Alkalinity (mglL) 34 32 32
Conductivity (umhoslcm) 152 162 155
Survival
Growth Overall Result
Normal
f'"I
FV( ChV >82
Hom. Var.
F1
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NOEC
82
82
LOEC
>82
>82
ChV
>82
>82
Method
Steel's
Dunnett's
5tats
Survival
Growth
Cone.
Critical Calculated
Critical Calculated
10.25
10 22
2.41 0.8060
20.5
0 19
20.5
2.41 2.2394
2.41 0.9905
41
61.5
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82
0 18
2.41 1.2305
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(VIER/TECH„ INC'_
ENVIRONMENTAL LABORATORIES
A olvls/ory of water Techne/o9-Vand Controls, lnc.
Chemical and Physical Determinations
Client: Statesville 3rd NPDES#: 0020591 Start Date: 1/24/23
Test Organism: Pimphales promelas
Day
End Date: 1/31/23
Concentration: control
0-1
1-2
2-3
3-4
4-5
5-6
6-7
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Soft Synthetic Freshwater
Batch N
pH: Initial
.2
% 3
-7
�, � I
7,
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7
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7, l
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_ j c�
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' }
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( 5
Final
, 51
� J
r -
J�
740
Temp.: Initial
,2y
Final
�c
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2 Y'3
j1j'S—
I)ic
Conductivity: Initial
Final
(bC1
j�'
"' '
i
2
Residual Chlorine:
1.. G i
u
6; l
b:
Hardness:
7
{,------->
Alkalinity:
3 t1
Da
Concentration: 10,25%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
], 4.6
7t
Final
-7c
2 u
-7t S
D.O.: Initial
Al i i
Final
7,51
1.71
7e
7711(�
Temp.: Initial
----? 5
R �c
6, 0
2y,6
aM. %
u�
r� 1s1r3
Final
i
f l
21.-�
2 M, ,
r,
Conductivity: Initial
) "�
7
-',.;
�'
Final
'
(,
Residual Chlorine:
i
L? l
`L 4
Day
Concentration: 20.5%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
PH: Initial
"�
7.
,
"� (
�. 73
(�
Final
7,6
J, r`
7 MI.1
tr,
lj•.
D.O.. Initial
4r,yv
-7f
Final
+ L('�
!
'�. 7 %
<? () -
�. t `
111
e�
Temp.: Initial
r
Final
c c
�,f
)M . I?
Conductivity: Initial
C1
Final
Residual Chlorine:
. V, 1
1 0
e-G,

I
I'V1ERJ'TEC'H� /NC">.
,.� r�NVIRdNMBIVTA4 L.ABd RA"I"b RIES =,
A !vla lra.• / vt•:�r.rr v�l..��./ovy / C. /a�r.'p/y. /
Chemical and Physical Determinations
Page 2 of 2
Client: Statesville 3rd NPDES#: 0020591 Start Date: 1/24/23
Test Organism: Pimenhales promelas End Date: 1/31/23
Day np- j - 31 -,I
Concentration: 41.0%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
--I.
),
'46
1 U
Final
'], ]
Cv
6 j
'1")
D.O.: Initial
�� - �,
�, G 3
",
j �{
? 7
Final
7. L4
1-f 7, 7 r
Temp.: Initial
a4,
Final
s, ��
�,i
3Li
,y
Pi
)
."
Conductivity: Initial
?I 4
22
Final
-7��
Residual Chlorine:
/_ o k
o . 1
G C� 4
c u.
Day
Concentration: 61.5%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: InitialU
Final
'?.7
���
'7r.-'7
D.O.: Initial
3'><
j1
�_�
(,13(rZ
Final
7, (f7
, JLJ
?, 6'�
Jf, 1
'7. � J
7r ? %
Temp.: Initial
11
Final
"7_l.; f�
[ `
I.� `�
? il, CI
�, �'
�, 7
Conductivity: Initial
�,
�. lj
;�, jL
�,
}
l
>
Final
2 �, [,
2 `7
d `i
"a,), ")-
Residual Chlorine:
G 6 i
-& , I
L o i
G CJ
1 I
L 0
Day
Concentration: 82.0%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
i, 3 u
5
r 7J
�, S�
—1/
Final
D.O.: Initial
9.'3 (y
20
�'„� (
�1 �
; i
1-3
t �i
Final
7,
79
r
Temp.: Initial
5�• 3
a 4'��
Final
',2
J
2 4,
X
Conductivity: Initial
Final
i 07
1
(1
R7
Residual Chlorine:
Day
Concentration: 100%
0-1
1-2
2-3
1 3-4
4-5
5-6
6-7
Remarks
pH:
7,
7, `l O
� C,
Conductivity:
Residual Chlorine:
Hardness:
Alkalinity:

MERITECH, INC.
Mortality Data: Chronic Fathead Test
Client: Statesville 3rd NPDES#: 0020591
Test Organism: Ameehales,nromelas
Concentration Control
Tuesday Wednesday Thursday Friday
Rep A 0 u
Rep B 0 v_
Rep C 0
Rep D 0
Start Date: 1/24123
End Date: 1131123
Saturday Sunday
Monday
Tuesday
l (
/)
Concentration
10.25%
Tuesday
Wednesday Thursday
Friday
Saturday
Sunday
Monday
Rep A
0
Rep B
0
Rep C
0
Rep D
0
Concentration 20.50%
Tuesday
Wednesday
Thursday
Friday
Rep A 0
U
L
Rep B 0
Rep C 0
Rep D 0
Saturday Sunday Monday
Tuesday
Tuesday

MERITECH, INC.
Mortality Data: Chronic Fathead Test
Client: Statesville 3rd NFDES#: 0020591 Start Date: 1/24/23
Test Organism: Pimephales promelas End pate: 1131/23
Concentration 41.0%
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A 0
Rep B 0�
Rep C 0%
Rep D 0
Concentration 61.5%
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A
0
Rep B
0
Rep C
0
Rep D
0
V
U
Concentration
82.0%
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Rep A
0
Rep B
0
Rep C
0
01
Rep D
0
-j)
t�
b

ENVIRONMENTAL LABORATORIES
n Wvislr n , Wirtei Technology and Cor+trO15. Inc.
�seFISH LARVAL SURVIVAL/GROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Statesville 3rd Page: 1 of 2
NPDES #: 0020591 Outfall:
Date of Test: 1 /24/23
Initial weights taken on: ,),' , by: Lam/ Organism: Pime hales promelps
Final weights taken on: 62 by: l�
CONC
REP
PAN WT.
(mg)
PAN + ORG.
WT. (mg)
WT. OF ORG.
(mg)
# ORG.
MEAN
WT.IORG. (mg)
SURV %
71
C
C
)
_
t'; _
D
A
i�'1,3�
yG(0lv�
1 0.25 /o
10 0
D
L0 0
A
s
�-Z
o
20.50 /Q
D
7q 7� -.Y)

` ENVIRONMENTAL LABORATORIES
A D!Wli— o/ WNter tech —logy a,)d centrois, inr.-
FISH LARVAL SURVIVALIGROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Statesville 3rd
NPDES #: 0020591
Date of Test: 1 /24/23
Initial weights taken on: by:_y
Final weights taken on: by: lr��
Blank Pan: Initial Wt: �f)?� Final Wt:�i
Page: 2 of 2
Outfall:
Organism: Pimephales promelas
Difference: U, or
CONC
REP
PAN WT.
(mg)
PAN + ORG.
WT. (mg)
WT. OF ORG.
(mg)
# ORG.
MEAN
WT.IORG. (mg)
SURV %
41.0 /o
L
ULJ
61.5%
ALl
c
A
�/6
B
o
82.0
C
l� r �,
f
D
1 ,fix
�, 75,cr
L}�

MERITECH, INC. (Lab # 027) Meriwrhsampleio#: C'I��"�
r
BioassaV Sam le Chain of Custod
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax:[phone]
Laboratory Supervisor E-mail: mike.reedC')a.meritechlabs.com Web Site: www.meritechlabs.com
CLIENT INFORMATION
Client:
Contact Person:
Physical Address:
Mailing Address:
State:
/� I 1 V 11
Sample Site: r Ce U�) ��
tI
Pd#:
NPDES#: NC CC)`` �r76C_A+,+ C�
Phone: �D"1' (J 1 4 39 3,]
Pipe #: C) 1
Sample Type: ❑ Grab Composite # of containers:
Sampling Time: Start Date: i I a ,)j �j Start Time:r�� AM PM
End Date: J J� Ll 1,9)3 End Time: C.a c AM PM
••" Triple rinse sample container with sample before filling completely with NO AIR SPACE. Pack the sample cooler completely with ice.
The sample must be < 6.0'C upon receipt at Meritech—
.,Collector's Name: Print:D � „AfV1( Signature:
TOXICITY TEST INFORMATION Test Required: 4 Chronic (7 days) Test Organism: 0 Ceriodaphnia dubia (water flea) Ci��}} 'c,�sr Rc, IJ
❑ Acute (24-48 hours) � Plmephales promelas (fathead minnow)
rr ❑ Mysidopsls bahla (mysid shrimp)
IWC: % *** Friday Samples for Chronic Fathead test trust be collected after 9:00 a.m. on Friday. ***
CommentslDilution(s): l �j, � ; ��, , 4 i
SHIPPING INFORMATION
Relinquished 3
by: Date: Time: 52,5� AM M
Received by: Date: f Time: /3� AM PM
Relinquished by: Date: Time: �14 5s- AM PM
Received by: Date: Time: AM PM
Relinquished by:
Date:
Received by:
Date:
Relinquished by:
Date:
Time: AM PM
Time: AM PM
Time: AM PM
Received by: Date: Time: AM PM
Sample Temperature (°C):
Method of Shipment: ❑ UPS ❑Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
Samples shipped on Friday must be Fed Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED *"
SAMPLE RECEIVING (Meritech Use Only)
Relinquished by: I ? %�V'c"C(ils,.
Received by: fJ�. Date: 2 �7 ' 7. Time: i "[ r AM
( �s
Sample Temperatures (°C): f L` 1 I 1 1 Sample Condition:
WHITE = Laboratory copy YELLOW = Client copy

0
MERITECH, INC. (Lab # 027) Meritech Sample ID#: o L `{ " ✓ ���
Bioassay Samnle Chain of Custody
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax:[phone]
Laboratory Supervisor E-mail: mike.reedCcDmeritechlabs.com Web Site: www.moritechiabs.com
CLIENT INFORMATION
Client: POM
Contact Person: { d ,'I'C� NPDES#t: NC oc)
Physical Address: H y 9 I r\ s C , Cls @C K -- �� • Phone: -7 6 q ff•
Mailing Address - k Pipe
City: - e- S � ,, u e State: Zip: t�
County:_ E-mail: (} G }befy,ct
SAMPLEINFORMATION
Sample Site: "cl !fie eV l t] \�
Sample Type: ❑ Grab X Composite # of containers:
SamplingTime. Stark Date: UaSfr_Start Time: 5 PM
End Date: ! !r L2 ;_� End Time: AM PM
*** Triple rinse sample container with sample before rifling completely with NO AIR SPACE. Pack the sample cooler completely with ice.
The sample must be a 6.0 ° C upon receipt at Meritech***
Collector's Name: Print: 's V" l-j w'CS o N Signature: �_- �'�✓ S'
TOXICITY TEST INFORMATION
Test Required: Chronic (7 days) Test Organism: Ceriodaphnia dubia (water flea)} t S� II F;C% ,
❑ Acute (24-48 hours) L Pimephales promelas (fathead minnow)
❑ Mysidopsis bahfa (mysid shrimp)
IWC: % 'Friday Samples for Chronic Fathead test must be collected after 9:00 a.m. on Friday,***
Comments0lution(s):
Relinquished
Received
Relinquished
Received
Relinquished by:
Received by:
Relinquished by:
Received by:
ING INFORMATION
Date:
Date: Y'
Date: ,7
Dale:
Date:
Date:
Date:
Date:
Sample Temperature (°C):
Time:
I Z `e y:)
Time:
r�
Time:
0
Time:
Time:
Time:
Time:
Time:
AM
AM
AM
AM PM
AM PM
AM PM
AM PM
AM PM
Method of Shipment: ❑ UPS ❑Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
*** Samples shipped on Friday must be Fed Ex and must be clearly labeled For Saturday Delivery, NO SIGNATURE REQUIRED **'
I— SAMPLE RECEIVING (Meritech Use Only)
Relinquished by:
Received b . Date: !~ if !) 7 Time: �� �,{- ' AM PM
Sample Temperature C): 1. 1 1 . Y 1 1 Sample Condition:_°-°''f
WHITE = Laboratory copy YELLOW = Client copy

Jf
!� MERITECH, INC. (Lab # 027) Meritech Sample tD#: •�� '~""�'
i. Bioassay Sample Chain of Custody
r
642 Tamco Rd. Reidsville, N.C. 27320
Phone: [phone] Fax:[phone]
Laboratory Supervisor E-mail: mike.reed(&meritechiabs.com Web Site: www.maritechiabs.com
CLIENT INFORMATION
Client:
Contact Person:
Physical Address:
Mailing Address: 9'.tJ . �' 0 X I I k 1
City: State:
County:
Sample Site: r
Sample Type: ❑ Grab Composite
Sampling Time: Start Date: f j0 p
End Date: b—'
PO#:
NPDES#: NC Q b+ `
Phone: 7/�s�'j1 � 7S n1 S — 3(3'?
Pipe #: L1 }
Zip:��
E-mail: C 4 J
# of containers:
Start Time: A PM
End Time: AM PM
Triple rinse sample container with sample before filling completely with NO AIR SPACE. Pack the sample tooter completely with ice.
The sample must be a 6.00C upon receipt at Meritech—
Collector's Name: Print: ScOAA Signature: l ry
TOXICITY TEST INFORMATION y
Test Required: Chronic (7 days) Test Organism: Ceriodaphnla dubia (water
((((❑ Acute (24-48 hours) Pimephales promelas (fathead minnow) �st�cb �YA:s;pe_(�, Ile)
❑ Mysidopsis bahia (mysid shrimp)
IWC; 1 %
— Friday Samples for Chronic Fathead test must be collected after 9:00 a.m. on Friday.'
Comments/Dilution(s):
SHIPPING INFORMATION
Relinquished by: _ Date: C It Time:
PM
Received by:
Date: j' Z7 Time:
V AM
PM
Relinquished
�7Z
,���' Date: ��" G 7� z Time:
�1 AM
PM
Received b .
Date: Time:
AM
PM
Relinquished by:
Date: Time:
AM
PM
Received by:
Date: Time:
AM
PM
Relinquished by:
Date: Time:
AM
PM
Received by:
Date: Time:
AM
PM
Sample Temperature (°C):
Method of Shipment:
❑ UPS []Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
Samples shipped on Friday must be Fed Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED
*"
SAMPLE RECEIVING (Meritec_h Use Only)
by: ` Pf
��ljKIP
Relinquished
3
4M
Received by: _ j [ice .
A. Date: G Time:
AM
Sample Temperatures (°C): 0 1 0 1 1 ­l 1 Sample Condition:
1V✓1
WHITE = Laboratory copy YELLOW = Client copy

Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Shapiro - Wilk's Test for Normality
----------------------------------------------------------------------------
D = 0.0594
W = 0.9662
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
Data PASS normality test (alpha = 0.01). Continue analysis.

Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Bartlett's Test for Homogeneity of Variance
----------------------------------------------------------------------------
Calculated B1 statistic = 1.8894 (p-value = 0.8642)
Data PASS B1 homogeneity test at 0.01 level. Continue analysis.
Critical B = 15.0863 (alpha = 0.01, df = 5)
= 11.0705 (alpha = 0.05, df = 5)

Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
f
ANOVA Table
----------------------------------------------------------------------------
SOURCE DF SS MS F
----------------------------------------------------------------------------
Between 5 0.0182 0.0036 1.1032
Within (Error) 18 0.0594 0.0033
----------------------------------------------------------------------------
Total 23 0.0777
----------------------------------------------------------------------------
(p-value = 0.3930)
Critical F = 4.2479 (alpha = 0.01, df = 5,18)
= 2.7729 (alpha = 0.05, df = 5,18)
Since F < Critical F FAIL TO REJECT Ho: All equal (alpha = 0.05)

f
Title: 3 rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Dunnett's Test -
----------------------------------------------------------------------------
TABLE 1 OF 2
Ho:Control<Treatment
TRANSFORMED
MEAN CALCULATED IN
SIG
GROUP
IDENTIFICATION
MEAN
ORIGINAL UNITS
T STAT 0.05
1
Control
0.6218
0.6218
2
10.25
0.5890
0.5890
0.8060
3
20.5
0.5308
0.5308
2.2394
4
41
0.5815
0.5815
0.9905
5
61.5
0.5620
0.5620
1.4704
6
82
0.5718
0.5718
1.2305
----------------------------------------------------------------------------
Dunnett
critical value = 2.4100 (1 Tailed,
alpha = 0.05, df =
5,18)
Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Dunnett's Test -
TABLE 2
OF 2 Ho:Control<Treatment
----------------------------------------------------------------------------
NUM OF
MIN SIG DIFF
% OF
DIFFERENCE
GROUP
IDENTIFICATION
REPS
(IN ORIG. UNITS)
CONTROL
FROM CONTROL
1
Control
4
2
10.25
4
0.0979
15.8
0.0328
3
20.5
4
0.0979
15.8
0.0910
4
41
4
0.0979
15.8
0.0403
5
61.5
4
0.0979
15.8
0.0598
6
82
4
0.0979
15.8
0.0500

Title: 3rd
File: 3rdSurvival Transform: NO TRANSFORMATION
t Shapiro - Wilk's Test for Normality
----------------------------------------------------------------------------
D = 0.1600
W = 0.8347
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
----------------------------------------------------------------------------
Data FAIL normality test (alpha = 0.01). Try another transformation.
Warning - The first three homogeneity tests are sensitive to non -normality
and should not be performed with this data as is.

Title: 3rd
File: 3rdSurvival Transform: NO TRANSFORMATION
.artley's Test for Homogeneity of Variance
Bartlett's Test for Homogeneity of Variance
----------------------------------------------------------------------------
These two tests can not be performed because at least one group has
zero variance.
Data FAIL to meet homogeneity of variance assumption.
Additional transformations are useless.

i
Title: 3rd
File: 3rdSurvival Transform: NO TRANSFORMATION
Steel's Many -One
Rank Test
- Ho:
Control<Treatment
----------------------------------------------------------------------------
MEAN IN
RANK
CRIT.
SIG
GROUP
IDENTIFICATION
ORIGINAL UNITS
SUM
VALUE
DF 0.05
1
Control
0.9250
2
10.25
1.0000
22.00
10.00
4.00
3
20.5
0.9250
19.00
10.00
4.00
4
41
0.9750
20.50
10.00
4.00
5
61.5
0.9500
19.50
10.00
4.00
6
82
0.9250
18.00
10.00
4.00
----------------------------------------------------------------------------
Critical
values are 1 tailed ( k = 5 )

* Effluent Toxicity Report Form -Chronic Fathead Minnow Multi -Concentration Test Date:2/23/2023
Facility: Statesville -Third Creek NPDES # NC00 20591 Pipe #: 001 County: Iredell
Laborat ry: Meritec Inc. Comments
6ignature of Operato 'n Responsi Charge/Email/Phone Number
x
Signature of Laboratory Supervisor
Test Initiation Datefrime
% Eff. Repl.
Control Surviving #
Original #
Wt/original (mg)
1 -02-5--1 Surviving #
Original #
Wtoriginal (mg)
2-0 Tj Surviving #
Original #
Wt/original (mg)
41 Surviving #
Original #
Wt/original (mg)
L= Surviving #
Original #
Wt/original (mg)
F-8-2--1 Surviving #
Original If
Wt/original (mg)
Water Quality Data
Control
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
High Concentration
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) IniUFin
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
Chlorine(mg/L)
Temp. at Receipt ('C)
MAIL ORIGINAL TO: Water Sciences Section
Aquatic Toxicology Branch
Division of water Resources
1621 Mail Service Center
Raleigh, N.C. 27699-1621
2/14/2023 3:00 PM Avg WUSuw. Control 1 0.605
1 2 3 d
10
10
10
10
10
10
10
10
0.685
0.600
0.590
0.545
10
10
1 10
10
10
10
10
10
0.689
1 0.578
1 0.657
1 0.672
10
10
10
10
10
10
to
10
0.688
1 0.633
1 0.651
0.595
10
1 9
1 10
10
10
10
10
10
0.657
1 0.726
1 0.637
1 0.704
10
10
10
10
10
10
10
10
0.717
1 0.596
1 0.679
0.607
10
10
1 10
1 10
10
10
10
10
0.541
1 0.588
1 0.596
1 0.672
% Survival 100.0
Avg Wit (mg) 0.605
% Survival 100.0
Avg Wl (mg) 0.649
% Survival 100.0
Avg Wt (mg) 0.642
% Survival 97.5
Avg Wt(mg) 0.681
% Survival 100.0
Avg Wt(mg) 0.650
% Survival 100.0
Avg Wt (mg) 0.599
Day
0 1 2 s a s a
7.56 / 7.60
17.53
17.51
7.85
/ 7.65
7.73 / 7.98
18.05
/ 7.95
17.86 / 7.74
17.84
/ 7.51
7.92 / 7.55
8.06
/ 7.70
8.11
/ 7.50
7.87 / 7.57
7.88
/ 8.03
8.10 / 7.64
8.00
/ 7.04
25.0 / 24.8
124.7
124.3
125.1
/ 24.4
24.7 / 24.4
124.3
/ 24.5
124.4 / 24.2
25.7
/ 24.3
0 1 2 3 4 5 e
7.25 / 7.60
7.50
/ 7.76
7.50 / 7.84
7.74
/ 8.10
17.97
/ 8.01
17.90 / 7.82
7.70
/ 7.74
8.15 / 7.49
8.20
/ 7.73
8.34 / 7.45
8.21
/ 7,52
8.11
/ 7.93
7.96 / 7.58
8.20
/ 7.10
25.8 / 24.5
24.5
/ 24.4
24.6 / 24.8
124.6
/ 24.3
1247
/ 24.9
124.8 / 24.3
125.3
/ 24.2
1 2 3
2/13/2023
2/15/2023
2/16/2023
23.9
23.7
23.9
36
36
36
47
63
62
296
321
326
<0.1
<0.1
<0.1
1.2
1.7 1
1.6
.,elution H2O Batch #R170
93 94 95Hardness (mg/L) 44 46 44Alkalinity (mg/L) 32 34 35Conductivity (umhos/cm) 159 166 160 Ffl
Test Organisms
Cultured In -House
i_ Outside Supplier
Hatch Date: 3/13/23
Hatch Time: 4:00-5:00 pm
Survival
Growth Overall Result
Normal
Fl
r) ChV >82
Hom. Var,
T-1
PI
NOEC
82
82
LOEC
>82
>82
ChV
>82
>82
Method
Steel's
Dunnett's
Slats
Conc.
10.25
Survival
Critical Calculated
10 18
10 18
10 16
10 18
10 18
Growth
Critical Calculated
2.41-1.2315
2.41-1.0286
2.41-2.1272
2.41 -L2525
2.41 0.1609
--TO 5
41
61.5
82

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y A ER/TECHo, /NC_
•, ENVIRONMENTAL LABORATORIES
A Oivision of Water Tachno/ogy and Cont,o/s, in,
Chemical and Physical Determinations
Client: Statesville 3rd NPDES#: 0020591 Start Date: 2/14/23
Test Organism: Pimephales promelas End Date: 2/21/23
Day
Concentration: control
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
Soft Synthetic Freshwater
Bates, a
pH: Initial
lfj6�
M2
-72S
T7
Final
7,60
7,61
7, -
2
_!.t S
D.O.: Initial
1, I
kh
fl
7
10
m
Final
S'
IJO
1 —0
-L7
Tuq
Temp.: Initial
'3�j,-tj,
1
,� t
cal
2 r
�2~
p Final
Conductivity: Initial
q
Final
-7 Ll
1 i
i
Residual Chlorine:
G o .1
G 0. l
L 0
L0. (
0: i
L G kL,
Hardness:
y
—_?
Uj( -
7
Alkalinity:
Z
Dav,
Concentration: 10.25%
0-1
1-2
2-3
3-4
1 4-5
5-6
6-7
Remarks
pH: Initial
'�),
,..
%_ 1S
l,&,
7,'7
Final
7, 5
7, b
7 r�
g` 00
i�i
i `E
D.O.: Initial
%,
0 3
4 'II
t/
Final
7r qo
7r 2W
06
l i F
`9 Z
Temp.: Initial
'a S -
�)
U r GJ
z� y,2
Final
Conductivity: Initial
oL
��`�
C
%
Final
jt
2d to
`1S
�{
Residual Chlorine:
G U, t
Lo .(
!- d ,1
L 0. It
G 0 l
G 0,
Da
Concentration: 20.5%
0-1
1-2
2-3
3-4
1 4-5
5-6
6-7
Remarks
pH: Initial
2t1Q6
7,62
Final
7, 5
7 t 6 y
2,W
U..
U
?,
I.5 S
D.O.: Initial
7
P,1 �
2 d 3
6.OZ
S
;,ty
r
Final
7<3n'
�%.60
7l23
'7. ? 3
41 b
SI
(0,2( o
Temp.: Initial
IS-V
ll-I C
'2— : J
Final
'��I(J
24.7
a �
Conductivity: Initial
c �,
� i 1,
i C1 1
Final
v�
3-oat),k
) l
CA
a l b
Residual Chlorine:
c—' U, t
L U 1
L O .%
L 0 1
L U t
ZU l
L 0,

MER/TE1C'H, /NC_
-J A ENVIRONMENTAL LARD RACTORI¢5 c
Chemical and Physical Determinations
Page 2 of 2
Client: Statesville 3rd NPDES#: 0020591 Start Date: 2/14/23
Test Organism: Pimephales promelas End Date: 2/21/23
Dav
Concentration: 41.0%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
�,(Q
1.5�
7,'7
i��w
�20
Final
1, 6 /
7,73
7,
Oct-
7 6
?,7C
-1.tQ )
D.O.: Llitial06,0'Gl
Final
7,`)C
7 SO
I,G
�, �CTemp.:
Initial
FinalConductivity:
Initiala
>
� �
Final��
5Residual
Chlorine:
GO \
G l
LG (
L_ U I
l
Dav
Concentration: 61.5%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
�i 3
7,7tJ
1.}Y
1,75
5, TT
a, ,c(
Final
7, 6y
i 7
rZ
D
l 4l r
], t
1.7
D.O.: Initial
?r C
l 7
� 3 3
8,16
Final
1, n
130'
1*10
`l
07
Temp.: Initial3
Final
dl�
Conductivity: Initial
=. 15
�(
2(-
Final
ti
!j
��
�✓
Residual Chlorine:
, O
l_ G t
G 0. k
LU .
Lc
Dav
Concentration: 82.0%
0-1
1-2
2-3
5-6
6-7
Remarks
pH: Initial
'dj
�r 5
1 ��
��
71 MiFinal
1.6G
7,'7.
Y7
`2
�:2`D.O.:
Initial
'
20
3 -2�Final
M44
'1,y''l
7,'23
) 5Temp.:
Initial
3'
< j
3u �
,��
7Final
`f'
i
��I�
Conductivity: Initial
,2�
C
Final
�"
Z> Q9.
15
Residual Chlorine:
L o. i
L 6
L G I
L u
L G (
L o
Day
Concentration: 100%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH:
3.
Conductivity:
Z�
Residual Chlorine:/
-
Hardness:
Alkalinity:
(1
„1-

MERITECH, INC.
Mortality Data: Chronic Fathead Test
Client: Statesville 3rd NPDES#: 0020591
Test Organism: Pimephales promelas
Start Date: 2/14/23
End Date: 2/21/23
Concentration Control
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A 0 b V —6� `/ —7:�)— --e—
Rep B
0
V
--0—
—,/T,
Rep C
0
Rep D
0
Concentration
10.25%
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Rep
0
Rep B
0
—rt7
Rep C
0
Rep D
0_
Concentration 20.50%
Tuesday Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Rep A 0 v�
�—
Rep B 0
Rep 0—
�u
Rep D 0

f
MERITECH, INC.
Mortality Data: Chronic Fathead Test
Client:
Statesville 3rd NPDES#: 0020591
Start Date:
2/14/23
Test Organism:
Pimephales promelas
End Date:
2/21/23
Concentration 41.0%
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A 0
Rep B 0
Rep C 0
��
--—
Rep D 0 /)
lL�
U
Concentration 61.5%
Tuesday
Wednesday
Thursday
Friday
Saturday
Monday
Tuesday
Rep A 0
T
�T
—
/Sunday
< /
—S�
Rep B 0
/ L
j
IGI
y
y
Rep C 0
----
�rr
(( l
Rep D 0
a
b=
V
Concentration 82.0%
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A 0
Rep B 0
Rep C 0
Rep D 0

ENVIRONMENTAL LABORATORIES
ono
n omcs,on r w, er r. n. mQy oini controls, mc.
FISH LARVAL SURVIVAL/GROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Statesville 3rd
NPDES #: 0020591
Date of Test: 2/14/23
Initial weights taken on: by: 1. ,/
L Final weights taken on: v2 ',z� by: ../
Page: 1 of 2
Outfall:
Organism: Pimephales promelas
PAN WT.
PAN + ORG.
WT. OF ORG.
MEAN
CONIC
REP
WT. (mg)
(mg)
# ORG.
WT./ORG. (mg)
SURV %
r(mg)
0
U
c
�h 1, i(�
K 7 7 I
r
,y ��)
)
,
D
71 36
161
i
0
A
()Q,
B
7O
�J7
�,
l oo r
10.25%
D
1V
I
4/e 7�
/6
A)>II��7
(JI (
B
710.
2 � ! (,�
�J i �
�
__ ,
�TT�
lfi�rr)
20.50B/o
C
//�
(D l0�
ll
60V
D

'WERITHICHfAIC.
ENVIRONMENTAL LABORATORIES
a nror:�c... ,r Im.. r��r r cnnnro_nr ar+rr con r.,,ts. mom.
FISH LARVAL SURVIVAL/GROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Statesville 3rd
NPDES #: 0020591
Date of Test: 2/14/23
Initial weights taken on: / `/-, ,2 by:
Final weights taken on: by:
Blank Pan: Initial Wt: S I Final Wt o o
Page: 2 of 2
Outfall:
Organism: Pimephales promelas
Difference: CYA
CONC
REP
PAN WT.
(mg)
PAN + ORG.
WT. (mg)
WT. OF ORG.
(mg)
# ORG.
MEAN
WTJORG. (mg)
SURV %
A
>c�I�� 7
o'y,
i
0,
i
C
�
C
) /,�
/' ��6,37
10
L-A
D�
7 ()
�C1
) z
!
A
7"1
B
16, 66
�
10
Q,
loo
61.5%
7
E lqu7r6,
�00
D
11 ,(Y
v`D`4
�l
�' U
IV
6e(
lV(,)
A
'912 , v
S
I 1
1 v
0,
cr
B
� ,`�
Wr
82.0%
7 � 3'
F015, 3
10
C)I 5.'
D
�'� �'''
�G ;v
i I
()
&16 2.
10
�c��

MERITECH, INC. (Lab # 027) Meritech Sample ID
�p Bioassay Sample Chain of Custody
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax: [phone]
/ Laboratory Supervisor E-mail: mike.reed(a)meritechlabs com Web Site: www.meritechiabs.com
C CLIENT INFORMATION
Client: 1 (' 1� l�C�..; �1
�t -y-LI IP PO#:
Contact Person:-S C_ NPDES#: NCcc\,rIcC-Ll
Physical Address: l-� l� -'�-��t 1 C=l (6 'f P p,{ r-1 Phone: -7Ct.,✓ R 7C> ••�l��r�
Mailing Address: 1 . C) .��'k ' j `1
C ` }} n / �? f1 C, Pipe #:
City: JTC-'�+e � V1 } I IC State: /I J l' ,L Zi �.'f )
1 P: ,� l�, r l _
County:'`(.( C� {'.1 E-mail: 1 C:)(\61` C 11 LU
- )-rC. , SAMPLE INFORMATION
Sample Slte:,C4. ��L`e
Sample Type: ❑ Grab
omposite `
l # of containers:
Sampling Time: Start Date: / /� ; Start Timer AM PM
End Date: C31 It LI % ,?j End Time: �a �) PM
—Triple rinse sample container with sample before filling completely with NO AIRSPACE. Pacic the sample cooler completely with ice.
The sample most be < 6.0°C upon receipt at Merilech""'
Collector's Name: Print: f0A Signature:
TOXICITY TEST INFORMATION \}
Test Required: Chronic (7 days) Test Organism:Cerlodaphnfa dubia (water flea)
❑ Acute (24-48 hours)
X�%Pimephalespromelas (fatheadminnow) /�LLLi\a
I ElMysldopsls befits /a (mysid shrimp)
)WC: ' % `"" Friday Samples for Chronic Fathead test must be collected after 9:00 a.m. on Friday.
CommentslDilutlon(s): A,
SHIPPING INFORMATION —1
Relinquished by: .G Date: 'l Time: �� AM PM
Received by'Y'�Y Date: ��- %�c J "x Time: 2 � AM PJjx
Relinquished by: l Date: '.'i % 'Z- "?' Time: '7- 2 S AM
GPM?
Received by: Date:
Time: AM PM
Relinquished by: Date:
Time: AM PM
Received by: Date:
Time: AM PM
Relinquished by: Date: Time: AM PM
Received by: Date:
Time: AM PM
Sample Temperature (°C):
Method of Shipment: ❑ UPS ❑Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
Samples shipped on Friday must be Fed Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED'"`
SAMPLE RECEIVING (Meritech Use Only)
Relinquished by: _ I P fCi i I\ q /01 [ L f
Received by: iL,'rvH Ayvd\ Date: -'111' I Time: , 2f AM km
Temperatures (°C): JL /I / / Sample Condition: : C?;rt
WHITE = Laboratory copy YELLOW = Client copy

MERITECH, INC. (Lab # 027) Meritech Sample lD#:
Bioassay Sample Chain of Custody
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax: [phone]
,r Laboratory Supervisor E-mail: mike.reed(p).meritechlabs com Web Site: www.meritechiabs.com
Client: / I -1 aT-JPoli
Contact Person: `i ,'(I" \ NPDES#: NC//111iVpc V _7"1
Physical Address: �1L (�.i^�.�,� tr�'�'� Phone:
7
Mailing Address: ``, Pipe #: L,
City: `.'7 r17'� i{t'r�U�i ��(?, State: t zip:
County: ��t� eLl 'c E-mail:iG
SAMPLE INFORMATION
Sample Site: -D K�—
Sample Type: ❑ Grab L Composite # of containers:
r
Sampling Time: Start Date: I _� a--)) Start Time: r PM
End Date: oU / 6.>l ,� 3 End Time: (92�6 AM PM
Triple rinse sample container with sample before filling completely with NO AIR SPACE. Pack the sample cooler completely will, ice.
qq The sample must be < 6.01 C upon receipt at Merilech—
Coilector's Name: Print: Hut6ij a-AcA Signature:
TOXICITY TEST INFORMATION
Test Required: [Chronic (7 days) Test Organism: 'QlCerioda hnia dubia waterflea
❑ Acute (24-48 hours) Pimephales promelas (fathead minnow) t`yLl j� t1C,+
❑ Mysidopsisbahia (mysidshrimp)
)WC: % '." Friday Samples for Chronic Fathead test must be collected after 9:00 a.m. on Friday.
Comments/Dllution(s): 6 � r� � %>> 4-
SHIPPING INFORMATION 7�
Relinquishedjby:
( �/�td) Dater Time: I l�' AM PM
Received Date: �- 'ZTime: U ARelinquished s Date: Z L Time: �-. �Q AMReceived Date:
Time: AM PM
Relinquished by: Date:
Time: AM PM
Received by: Date:
Time: AM PM
Relinquished by: Date:
Time: AM PM
Received by: Date:
Time: AM PM
Sample Temperature (°C):
Method of Shipment: ❑ UPS ❑Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
Samples shipped on Friday must be Fed Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED "*
'� SAMPLE RECEIVING (Meritech Use Only)
Relinquished by: 1IYGcyl
Received by: _ �(yvt, fAM Date: G ` �U .i- J n Jl
Time: �--' 7j; r"�, AM rlM
Sample Temperatures (°C): �, ! / (? / / Sample Condition: �.C, rc6f
WHITE = Laboratory copy YELLOW = Client copy

r.
MERITECH, INC. (Lab # 027) Wdt.0 Sample ID#:
i
Bioassay Sample Chain of Custody
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax: [phone]
Laboratory Supervisor E-mail: mike.reed(cDmeritechlabs.com Web Site: www.meritechlabs.com
I1?, L_ CLIENT INFORMATION
4
Client: ("", y �Syoje,( }'- PO#: /�
Contact Person: `Yj (� NPDES#: NC(�(; O Jcf
Physical Address: {q Lq � r r ° Phone: Idy R �R 343�
Mailing Address: T, C, Bn 1-k I I I I Pipe #: 0 I _
i/ 5A`MVLh I UKMAI IUN
Sample Site: c�r r� �1 '�—� Y, (�l w�__)�
Sample Type: ❑ Grab Composite # of containers:
Sampling Time: Start Date: Ida_Start Timed 0 AM PM
End Date: End Time: 0 � AM PM
Triple rinse sample container with sample before filling completely with NO AIR SPACE. Pack the sample cooler completely with ice.
The sample must be < 6.0'C upon receipt at Merifech—
Collector's Name: Print 5Co.� Signature: L,t
TOXICITY TEST INFORMATION ++
Test Required: \Chronic (7 days) Test Organism:Zmephalespromelas
eriodaphnia dubia (water flea)�j I �
❑ Acute (24-48 hours) (fathead minnow)
❑ Mysidopsis bahia (mysid shrimp) �� (-"C'.� t l_j
IWC: % ***,Friday Samplesforfor Chronic Fathead
^test must be collected after 9:00 a.m. on Friday.
� ***
Comments/Dilution(s): I0, s, d 6, Sj I LIf/
I I " I r J I �GllZI
SHIPPING INFORMATION
Relinquished by: C Date: o�J
Received by: 141n f Ot f,,l -r j Date: -ice' KI
Relinquished by: Date:/
Received by:
Relinquished by:
Received by:
Relinquished by:
Received by:
Date:
Date:
Date:
Date:
Date:
Sample Temperature (°C):
Time: j2 l5
Time: I 15
Time: % S7
Time:
Time:
Time:
Time:
Time:
AM Q
AM PM
AM PM
AM PM
AM PM
AM PM
AM PM
AM PM
Method of Shipment: ❑ UPS [-]Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
Samples shipped on Friday must be Fed Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED
SAMPLE RECEIVING (Meritech Use Only)
b Relinquished
q Y: 1 vl�Ct t I r� j �19
Received by: Date: Time: AM RM
Sample Temperatures(°C): _!/ Sample Condition: b NCO
wil .. wwompi WHITE = Laboratory copy YELLOW = Client copy --40�

Title: Statesville 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Shapiro - Wilk's Test for Normality
----------------------------------------------------------------------------
D = 0.0460
W = 0.9594
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
Data PASS normality test (alpha = 0.01). Continue analysis.

Title: Statesville 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
F
Bartlett's Test for Homogeneity of Variance
----------------------------------------------------------------------------
Calculated B1 statistic = 0.7867 (p-value = 0.9779)
Data PASS B1 homogeneity test at 0.01 level. Continue analysis.
Critical B = 15.0863 (alpha = 0.01, df = 5)
= 11.0705 (alpha = 0.05, df = 5)

Title: Statesville 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
ANOVA Table
----------------------------------------------------------------------------
SOURCE DF SS MS F
----------------------------------------------------------------------------
Between 5 0.0188 0.0038 1.4765
Within (Error) 18 0.0460 0.0026
----------------------------------------------------------------------------
Total 23 0.0648
----------------------------------------------------------------------------
(p-value = 0.2462)
Critical F = 4.2479 (alpha = 0.01, df = 5,18)
= 2.7729 (alpha = 0.05, df = 5,18)
Since F < Critical F FAIL TO REJECT Ho: All equal (alpha = 0.05)

Title: Statesville 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
F
Dunnett's Test -
TABLE 1 OF 2
Ho:Control<Treatment
------------------------------------
TRANSFORMED
---------------
MEAN CALCULATED IN
SIG
GROUP
IDENTIFICATION
MEAN
ORIGINAL UNITS
T STAT 0.05
------ ---
-----
1
--------------------
Control
-----------
0.6050
------------------
0.6050
2
10.25
0.6490
0.6490
-1.2315
3
20.50
0.6417
0.6417
-1.0286
4
41
0.6810
0.6810
-2.1272
5
61.5
0.6498
0.6498
-1.2525
6
82
0.5993
0.5993
0.1609
----------------------------------------------------------------
Dunnett critical value = 2.4100 (1 Tailed,
alpha = 0.05, df =
5,18)
Title: Statesville 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Dunnett's Test -
TABLE 2
OF 2 Ho:Control<Treatment
----------------------------------------------------------------------------
NUM OF
MIN SIG DIFF
% OF
DIFFERENCE
GROUP
IDENTIFICATION
REPS
(IN ORIG. UNITS)
----------------
CONTROL
-------
FROM CONTROL
------------
-----
1
--------------------
Control
-------
4
2
10.25
4
0.0861
14.2
-0.0440
3
20.50
4
0.0861
14.2
-0.0367
4
41
4
0.0861
14.2
-0.0760
5
61.5
4
0.0861
14.2
-0.0448
6
82
4
0.0861
14.2
0.0058

Title: Statesville
File: 3rdSurvival Transform: NO TRANSFORMATION
Shapiro - Wilk's Test for Normality
----------------------------------------------------------------------------
D = 0.0075
W = 0.4651
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
----------------------------------------------------------------------------
Data FAIL normality test (alpha = 0.01). Try another transformation.
Warning - The first three homogeneity tests are sensitive to non -normality
and should not be performed with this data as is.

Title: Statesville
File: 3rdSurvival Transform: NO TRANSFORMATION
Hartley's Test for Homogeneity of Variance
Bartlett's Test for Homogeneity of Variance
----------------------------------------------------------------------------
These two tests can not be performed because at least one group has
zero variance.
Data FAIL to meet homogeneity of variance assumption.
Additional transformations are useless.

Title: Statesville
File: 3rdSurvival Transform: NO TRANSFORMATION
Steel's Many -One
Rank Test
- Ho:
Control<Treatment
----------------------------------------------------------------------------
MEAN IN
RANK
CRIT.
SIG
GROUP
IDENTIFICATION
ORIGINAL UNITS
SUM
VALUE
DF 0.05
---
-------------------------
1
Control
-----------
1.0000
-------
------
-----
2
10.25
1.0000
18.00
10.00
4.00
3
20.50
1.0000
18.00
10.00
4.00
4
41
0.9750
16.00
10.00
4.00
5
61.5
1.0000
18.00
10.00
4.00
6
82
1.0000
18.00
10.00
4.00
------------
Critical
-------------------------------
values are 1 tailed ( k = 5 )
------
-

Effluent Toxicity Report Form -Chronic Fathead Minnow Multi -Concentration Test
Facility: Statesville -Third Creek NPDES # NC00 20591 Pipe #: 001
Signature of Operator inAespon7sil(le Charge/Email/Phone Number
x /.y �, - wi i -
Signature of Laboratory Supervisor
MAILORIGINALTO: Water Sciences Section
Aquatic Toxicology Branch
Division of Water Resources
1621 Mall Service Center
Raleigh, N.C. 27699d021
Test Initiation Dale/rime
% Eff. Repl.
Control Surviving #
Original #
WVorlginal (mg)
10.26 Surviving #
Original #
Wt/origlnal (mg)
2076Surviving #
Orlglnal #
WUorlglnal (mg)
41 Surviving #
Original #
Wt/original (mg)
81,5 Surviving #
Original
WUorlglnal (mg)
r-782-7 Surviving #
Original #
WVorlginal (mg)
Water Quality Data
Control
pH (SU) InlUFin
DO (mg/L) InVFIn
Temp (C) InlUFln
High Concentration
pH (SU) InlUFln
DO (mg/L) Init/Fln
Temp (C) IniUFln
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
Chlorine(mg/L)
Temp. at Receipt (°C)
4/18/2023 4:20 PM Avg WVSurv, Control 0.883
4 2 s 4
10
1 10
1 10
9
10
10
10
10
0,626
1 0,634
1 0.734
1 0.004
10 1
9
1 8
1 9
10
10
10
10
0,588
1 0,672
1 0,718
1 0,837
10
110!
10
10
10
10
10
10
0,747
0,595
1 0.651
1 0,709
10
9
1 10
1 10
10
10
10
10
0,750
1 0,717
1 0.713
1 0.730
10
1 10
i 9
10
10
10
10
10
0.796
1 0.822
1 0,538
1 0.713
8
1 10
10
10
10
10
1 10
10
0,699
0,742
1 0,669
1 0.737
% Survival 977
Avg WI (mg) 0,684
% Survival 92,6
Avg Wt (mg) 07663
% Survival 100 0
Avg Wt (mg) 0,898
% Survival 978
Avg Wt (mg) 0,728
% Survival 97.5
Avg Wt (mg) 0,717
% Survival 96,0
Avg Wt (mg) 0,684
Day
a 4 6 e
Date:4128/2023
County: Iredell
Test Organisms
Cultured In -House
Outside Supplier
Hatch Date: 4117/23
Hatch Time: 4:00.6:00 pm
7,69 17.83
7.80
1 7.68
T94
1 7.62
17.76
1 7.72
7.93 17.84
T93
17.83
1 T691 7.38
8.19 17,37
8.07
1 7.32
7.94
17,81
8.18
/ 7.58
8.12 / 8,12
8.26
1 8,20
18.23 16.63
24.2 1 24A
24,8
1 24,5
26.7
124.2
24.3
/ 24.2
125.3 / 24.71
24A
/ 24.3
124.1 / 24.6
a 4 6 a
7,53 / 7.56
17,65
1 7.76
7.70
1 T63
7.57
1 7.86
17.42
1 8.09
7.87
1 7.93
17.75 17.56
8.30 16.73
18.22
1 7.32
8.33
1 1.33
8.23
1 7.47
1 8.22
/ 7,92
18.10
1 7.96
1 8.35 16.28
24,2 / 24.5
125.0
124.E
25.2
124.3
24.5
124.8
1 24.9
/ 24.7
25.2
1 24.8
124.1 124.4
2 3
4/17/2023
1 4/19/2023
4/20/2023
23.7
23.8
24.0
32
40
52
55
55
78
358
346
350
<0.1
<0.1
<0.1
1.7
1.1
1.1
Dilution H2O Batch # 105 106 107
Hardness (mg/L) 48 46 44
Alkalinity (mg/L) 34 35 31
Conductivity (um 172 i61 190
Survival
Growth
Normal
r(
F1
Hom.Var.
)-i
Pi
NOEC
82
82
LOEC
>82
>82
ChV
>82
>82
Method
Steel's
Dunnell's
Overall Result
ChV >82
State
Cone.
10.25
Survival
Critical Calculated
10 14
10 20
10 18
10 18
10 17.5
Growth
Critical Calculated
2.41 0.1947
2.41-0.5665
2.41-1.1197
20.5
41
61.5
2.41-0.9338
2.41-0.3541
82

0
C
-n
w w
CD
Q
3-3o
to .
a
ID
�Z N
_CD
P
M

MER/TECf-/� /NC.
' ENVIRONMENTAL LABORATORIES
A DiWSIO" Of Water Tochnoiogy and Controls, inc.
Chemical and Physical Determinations
Client: Statesville 3rd NPDES#: 0020591 Start Date: 4/18/23
Test Organism: Pimeohales Promelas End Date: 4/25/23
Da
Concentration: control
0-1
1.2
2-3
3.4
4-5
5-6
6-7
Remarks
Son SynthcticFreehwatcr
Balch N ;
H: Initial
.61
7, Q
(q
7 %
Final
1, j
c
1(0 t -
% "7
7 'if
D.D.: Initial
Final
7
YR
1.0
A1210
Tenn . Initial
Final
Conductivity: Initial
7S'
Final
L4
Residual Chlorine:
/,O,l
I
l.-e,
Hardness:
Alkalinity:
Da
Concentration: 10.25%
0-1
1-2
2.3
3.4
4-5
5.6
6.7
Remarks
H: Initial
l }
1,1
d
'i,7a
1 G
11`7
Final
i, 5
I
1
7,7 7
DA,: Initial
4
Final
'?,QQ
Tenn Initial,
0
Final
Conductivity: Initial
Final
Residual Chlorine:
Da
Concentration: 20.5%
0-1
1-2
2-3
3-4
1 4-5
5.6
66-7
Remarks
pH: Initial
,(',)
'108
721
I.l0'1
177
ctQ)
7,(t 4
Final
1,Y7
-7
1
77
-72$
06
', cil0
D.O.: Initial
"L`1
.I�
•t�
2O
Final
/d.IaY
b 76
3 >
2, L
79a
7.o
J
Temp.: Initial
17
Final
2iFr5t
i (�
, b
Conductivity: Initial
b
�U
O(�
1?
alb
a15
Final
l
a C o
a\
3 u
3
Residual Chlorine:
j
Gc

A
Client: Statesville 3rd
MER/TECH, /NC_
EN VIRO wM ENTAL LABORATORIES
A o v a un o/ .ae. rcchnoropy nnN eon vob, u.c.
Chemical and Physical Determinations
NPDES#: 0020591
Test Organism: Pimeohales Promelas
Da
Start Date: 4/18/23
End Date: 4/25/23
Page 2 of 2
Concentration: 41.0%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
H: Initial
1,(pU
7,'76
't,
q3
? .7
Final
D.O.: Initial
S,.ILJ
&JO
,1
Final
P,)
Temp.: Initial
V4 ,
0
x
,j
t
Final
r
,� b
2
e ,
Conductivity: Initial
y
cpV
Final
tP�
Residual Chlorine;
cl
Da
Concentration: 61.5%
0.1
1.2
2.3
3.4
4.5
5.6
6.7
Remarks
H: Initial
"7, SI
7,'72
71
%s-q
m
7,79
Final
7j IF/79
.or
,
D.O.: Initial
`�.
F
f
Final
r"o
`
- 40
1 '76
Temp.: Initial
7, . 3
'� `
2ti,'1
Final
t
7z K,
l
'Z,4tq
I
Conductivity: Initial
I
;P -7
DA(
Final
`
1
dq
6
Residual Chlorine:
DAV
Concentration: 82.0%
0-1
1-2
2-3
3.4
4-5
5.6
6.7
Remarks
H: Initial
% g
7.
1
•7.75
Final
'1,55
7
l
Gil
71,
D.O.: Initial
$-3p
a.
--I)t5'.
��+
�,
�
5
Final
�,'13
.3
C `
'�.
Temp.: Initial
`7
Lj "3
52
"l
Final
t'J
24/ 7
4
Conductivity: Initial
( G
3-3Z2
6
3U�>
340
3,46
Final
I
355
3,4 Is
3(o3
Residual Chlorine:
r
,
Day
Concentration: 100%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH:
G
a
Conductivity:
33
Ll7
fo
Residual Chlorine:
Hardness:
Z
C
52
... .. .
,T
--n -

MERITECH, INC.
Mortality Data: Chronic Fathead Test
Client: Statesville 3rd NPDES#: 0020591
Test Organism: Pimephales Promelas
Start Date: 4/18/23
End Date: 4/25/23
Concentration Control
Tuesday Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Rep A 0
Rep B 0_1
Rep C 0_
Rep D 0
Concentration 10.26%
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A �� _� —/� _?1 —7 .
Rep 8 0
Rep C 0_
Rep D 0 ---
Concentration 20.60%
Tuesday Wednesday
Thursday
Friday
Saturday
Sunday Monday
Tuesday
Rep A 0
Rep B 0
Rep C 0
Rep D 0 0

MERITECH, INC.
Mortality Data: Chronic Fathead Test
Client: Statesville 3rd NPDES#: 0020591 Start Date: 4/18/23
Test Organism: Pimephales Promelas
End Date: 4/25/23
Concentration 41.0%
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Rep A 0
—6)—_
Q
9
Rep B 0
0
U
Rep C _4__�
_.
Rep D 0
Concentration 61.6%
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Rep A _�
--�
' .1
✓
Rep B 0
_
Rep C 0
Rep D 0
Concentration 82.0%
Tuesday Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Rep A 0
Rep B 0
r-
Rep C 0
Rep D 0

•� ENVIRONMENTAL LABORATORIES
A Division o/ Water Technology and Conbn/s, .nc
FISH LARVAL SURVIVALIGROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Statesville 3rd
NPDES #: 0020591
Date of Test; 4/18/23
Initial weights taken on: .i` a�0 u2� by:�Axf
Final weights taken on; la ;;2,%-a3 by; bV
Page: 1 of 2
Outfall:
Organism: Plmeahales nromelas
CONIC
REP
PAN WT.
(mg)
PAN + ORG.
WT. (mg)
WT. OF ORO,
(mg)
# ORG.
MEAN
WT./ORG. (mg)
SURV %
A
c��,
e ��)
R
,
6)
B
7e15w36
c>l, 7011
1
,
43
u
C
7,11K 95
So 7e I c
.-7, 3q
I
V1
D
06)6Aq,FU,73
6" .6
C
Cl c
A
va,
a0 c.
I
10.25%
B
�a 7
'
j.
..
)
. o
. aU
-7,1
D
'
�VVIw lL
III �'
✓
V ° �� I
A
F�.Q(0,-�Lj
Fjq,Ql
lo
oI
1 oo
B
�;
FOY% 56
q
5q
10-
20.50%
D
gOa,
, 0
5L
10 1
vI 7
l .

•, ENVIRONMENTAL LABORATORIES
A nrvison o/ klorer Technology and Controls, Inc,
FISH LARVAL SURVIVALIGROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Statesville 3rd
NPDES #: 0020591
Date of Test: 4/18/23
Initial weights taken on: 3-Rg-Z� by: LV
Final weights taken on: �� Q by:1-\�
Blank Pan: Initial Wt; =` 60 Final Wt:�222oO
Page: 2 of 2
Outfall:
Organism: Plmephales promelas
Difference: 01 as
CONIC
REP
PAN WT.
(mg)
PAN + ORG.
WT, (mg)
WT. OF ORG.
(mg)
# ORG.
MEAN
WT.IORG. (mg)
SURV %
A
006 37
F1 3
0
O� 750
� Ct,)
41.0%
B
el
� 963
7I
q
Dr
6
D
-7 J9
,0 5
730
%u
0,730
)Oa
A
off,
�
��,
0.75
Ion
B
00 1.
FN 57
61.6%
gv5,- a
F 1 r l
5,3Y
1
0d
6� v
D
U � Iq
FOOP7,
0,
100
B
9d,,3p
-1,
-7,
In
01 a
v
82.00/
D
���.9�
I (
-713
lb
0,-73

MERITECH, INC. (Lab # 027) Meritech Sample 10M G LAIt- ­� }io
�Bioassay Sample Chain of Custody
r
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax: [phone]
Laboratory Supervisor E-mail: mike.reed(dimeritechlabs com Web Site: www.meritechlabs.com
Client: Wz, PO#:
Contact Person: 11 4 Q NPDES#: NC 11''� Cj 1 r
`
Physical Address: L L (• I Phone:% -' _41
Mailing Address: Pipe #:
City: '�, Stale: Zip:r'1J1�(OIIJ CS �r^ jj� 't �n
County: 9 E•mail:.t��dhr��n �IL��yl11to
/ SAMPLE I FORM
Sample Site;
Sample Type: ❑ Grab I composite # of containers:
Sampling Time: Start Date; ( Start Time:/� AM PM
End Date:% a End Time: AM PM
Triple rinse sample container with sample before filling completely with NO AIR SPACE. Pack the sample cooler completely with Ice.
The m%�a,,,"� sample must be < a.0°C upon receipt et Meritech"' /"\� � rr
Collector'sNeet Print:LJ., 4014 Signature: ll✓�} rx�ity?--'—
TOXICITY TEST INFORMATION 11
Teat Required: Chronic (7 days) Test Organism: Cerlodaphnla dubla (water
❑ Acute (24.48hours) Plmepha/esprome/as (fatheadminnow) :'7+'.e co&SP(z:
❑ Mys/dops/s bahle (mysld shrimp)
IWC: L41 % — Friday Samples for Chronic Fathead test must be collected after 9:00 a.m, on Friday.
Comments/Dllutlon(a):' O-r�E,� _1 61 H I t wI .5) , 8,_(
SHIPPING INFORMAJI014
Relinquished by: �p Dale: Time: 4'1(!_ AM PM
Received by: Date: Time: ( AM P
Relinquished by: Jim Dale: Time: AM PM
Received by: Date: Time: AM PM
Relinquished by: Date: Time: AM PM
Received by: Date: Time: AM PM
Relinquished by: Date: Time: AM PM
Received by: Date: Time: AM PM
Sample Temperature (°C):
Method of Shipment: ❑ UPS ❑Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
Samples shipped on Friday must be Fed Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED
SAMPLE RECEIVING (Meritech Use Ong
Relinquished by: I1, Qri JQn
Received by: b�,, :
,proA% Date: �) Time: I6 og AM IPM
Sample Temperatures (°C): I I 1 _ r� / / Sample Condition: CP�
�� WHITE = Laboratory copy YELLOW = Client copy -.44�

C IC
MERITECH, INC. (Lab # 027) Meritech Sample ID#" 2
Bioassay Sample Chain of Custod
t
y
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax:[phone]
Laboratory Supervisor E-mail: mike.reeclgmeritechlabs com Web Site: www.meritechiabs.com
/'r , CLIENT INFORMATION
Client: ��-�'�eSV t I POM
Contact Person: V NPDES#: NC Q
Physical Address: L ,
LEE
Phone:
Mailing Address: \' Pipe #.
City: �ij.. �„�� Slate: Zip: 22, i(0
County: 1�C (lSan�S�r_L'��N),M (lit�'/CY
` E-mail:EmilC.'
rC\ SAMPLEINFOR A IO
Sample Site: �� r ` �L LETY
Sample Type: ❑ Grab Composite # of containers:
Sampling Time: Start Date; Start Time: 6A PM
End Date: End Tlme:6Qg'�3 Z pM
Triple rinse sample container with sample before filling completely with NO AIR SPACE Pack the sample cooler completely with Ice.
1Thasample must be c 8.00C upon receipt of Mare"ltacN
Collectoes Name: Print: J) s N SI nature:
n •, , ,/
TOXICITY TEST INFORMATION _ l 1
Test Required; XChronle (7 days) Teat Organism: ACeNodaphnis dubla (water flea) T'ass I )-ak ` y knlC�
❑ Acute (24.48 hours) ❑ P/mepha/es prome/as (fathead minnow) ' SQL i E
❑ Mysidopsls bah/a (mysid shrimp) T
IWC: % "• Friday Samples for Chronic Fathead test must be collected after 9:00 a,m, on Friday.
Comments/Dllutlon(s): •
Relinquished b Date:
Received by: Date:
Relinquished by: Date: �!(_
Received by: Date:
Relinquished by:
Received by:
Relinquished by:
Received bv:
Date:
Dale:
Date:
Date:
Sample Temperature (°C):
Time: AM PM
Time: (a)PM
Time: AM
Time:
Time:
Time:
Time:
Time:
Method of Shipment: ❑ UPS ❑Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
AM PM
AM PM
AM PM
AM PM
AM PM
"` Samples shipped on Friday must be Fed Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED —
SAMPLE RECEIVING (Meritech Use Only)
Relinquished by: (' �('ol `� n,,fCAl�lffJ
Received by: 1� �t yu�'y Date: Time: V Q 2)) V AM
� (�
Sample Temperatures (°C): (! / t / / Sample Condition: TC ed
mmummonsommeloo- WHITE = Laboratory copy YELLOW = Client copy ��

MERITECH, INC. (Lab # 027) Meritech Sample ID V'U 12
Bioassay Sample Chain of Custody
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax: [phone]
Laboratory Supervisor E-mail: mike.reedra)meritechlabs com Web Site: www.meritechiabs.com
CLIENT INFORMATION
Client: C-L.—I r � —
Contact Person:
Physical Address:
Mailing Address:
City:
County,
Ord
Sample Site:
Sample Type: ❑ Grab
State: /L) Zip:
E-mall:
# of containers:
POM
NPDES#: NCl�lJac)F) 1
Phone: 109 3 A l
Pipe #: Q 1
Sampling Time: Start Date: I a 1 Start Time: 0 &M— PM
End Date; L� I �, End Time: t� 3 (AM ) pM
Triple rinse sample container with sample before filling completely with NO AIR SPACE. Pack the sample cooler completely with Ice.
CC� The sample must be < 0.0°C upon receipt at Merilech•"
Collector's Name: Print: ao 651mSignature; 1'`\,, >
r� ,rK_1
TOXICITY TEST INFORMATION
Test Required; )4 Chronic (7 days) Test Organism: Carlodaphnfe dubla (water flea) �Q.✓✓ I rC��` ` la"
❑ Acute (24.48hours) ` P/mepha/esPromotes (fathead minnow)
❑ Mys/dopsls bahle (mysld shrimp)
IWC: % f"�° Friday Samples for Chronic Fathead test must be collected after 9:00 a.m, on Friday, ""•
CommentalDllutlon(s); _1 1 k Y (j I V , l , ()
SWIPING INFORM
'—'—
Relinquishedb .� ' ��,� Date: � Time: A PM
Received by: Dale: Time: I.37 A PM
Relinquished by: Date: Time: /`Lldt �A�A
Received by: Date: Time: AM PM
Relinquished by: Date: Time: AM PM
Received by: Date: Time: AM PM
Relinquished by: Date: Time: AM PM
Received by: Date: Time: AM PM
Sample Temperature (°C):
Method of Shipment: ❑ UPS El Fed EX ❑ Meritech Pick-up ❑ Delivered ❑ Other
Samples shipped on Friday must be Fed Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED***
SAMPLE RECEIVING (Meritech Use Onlv1
Relinquished by: al Received by: Ion f,ryyvini Dale: `/f�G��%�j Time: �,2/5 AM ;rlvi
Sample Temperatures(°C): Sample Condition:, cco
tes_ussloll WHITE = Laboratory copy YELLOW = Client copy

Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Shapiro - Wilk's Test for Normality
---------------------------------------------------------------------------
D = 0.1149
W = 0.9207
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
Data PASS normality test (alpha = 0.01). Continue analysis.

Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
rBartlett's Test for Homogeneity of Variance
----------------------------------------------------------------------------
Calculated B1 statistic = 8.4149 (p-value = 0.1348)
Data PASS Bi homogeneity test at 0.01 level. Continue analysis.
----------------------------------------------------------------------------
Critical B = 15.0863 (alpha = 0.01, df = 5)
= 11.0705 (alpha = 0.05, df = 5)

Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
------ ANOVA Table
--------------------------------------------------------
SOURCE
----------------------------------------------------------------------------
DF
SS
MS F
Between
5
0.0169
0.0034 0.5290
Within (Error)
----------------------------------------------------------------------------
18
0.1149
0.0064
Total
----------------------------------------------------------------------------
23
0.1318
(p-value - 0.7515)
Critical F = 4.2479 (alpha = 0.01, df = 5,18)
= 2.7729 (alpha = 0.05, df = 5,18)
Since F < Critical F FAIL TO REJECT Ho: All equal (alpha . 0,05)

Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
rDunnett's Test
- TABLE 1 OF 2
Ho:Control<Treatment
----------------------------------------------------------------------------
TRANSFORMED
MEAN CALCULATED IN
SIG
GROUP
IDENTIFICATION
MEAN
ORIGINAL UNITS
T STAT 0.05
-------------------------
1
Control
-----------
0.6642
------------------
0.6642
------ ---
2
10.25
0.6533
0.6533
0.1947
3
20.5
0.6963
0.6963
-0.5665
4
41
0.7275
0.7275
-1.1197
5
61.5
0.7170
0.7170
-0.9338
6
82
0.6843
0.6843
-0.3541
----------------------------------------------------------------------------
Dunnett
critical value - 2.4100
(1 Tailed,
alpha = 0.05, df -
5,18)
Title: 3rd
File: 3rdGrowth
Dunnett's Test
Transform:
- TABLE 2 OF 2
NO TRANSFORMATION
Ho:Control<Treatment
----------------------------------------------------------------------------
NUM OF
MIN SIG DIFF
% OF
DIFFERENCE
GROUP
IDENTIFICATION
REPS
(IN ORIG. UNITS)
CONTROL
FROM CONTROL
-------------------------
1
Control
-------
4
----------------
-------
------------
2
10.25
4
0.1361
20.5
0.0110
3
20.5
4
0,1361
20.5
-0.0320
4
41
4
0.1361
20.5
-0.0633
5
61.5
4
0.1361
20.5
-0.0527
6
----------------------------------------
82
4
0.1361
------------------------------------
20.5
-0,0200

Title: 3rd
File: 3rdSurvival Transform: NO TRANSFORMATION
Shapiro - Wilk's Test for Normality
---------------------------------------------------------------------------
D = 0.0600
W = 0.8658
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
Data FAIL normality test (alpha = 0.01). Try another transformation.
Warning - The first three homogeneity tests are sensitive to non -normality
and should not be performed with this data as is.

Title: 3rd
File: 3rdSurvival Transform: NO TRANSFORMATION
rtley's Test for Homogeneity of Variance
,3artlett's Test for Homogeneity of Variance
----------------------------------------------------------------------------
These two tests can not be performed because at least one group has
zero variance.
Data FAIL to meet homogeneity of variance assumption.
Additional transformations are useless.
----------------------------------------------------------------------------

Title: 3rd
File: 3rdSurvival Transform: NO TRANSFORMATION
Steel's Many -One
Rank Test
- Ho:
Control<Treatment
----------------------------------------------------------------------------
MEAN IN
RANK
CRIT.
SIG
GROUP
IDENTIFICATION
ORIGINAL UNITS
-----------
SUM
-------
VALUE
------
DF 0.05
----- ---
-------------------------
1
Control
0.9750
2
10.25
0.9250
14.00
10.00
4.00
3
20.50
1.0000
20.00
10.00
4.00
4
41
0.9750
18.00
10.00
4.00
5
61.5
0.9750
18.00
10.00
4.00
6
82
0.9500
17.50
10.00
4.00
----------------------------------------------------------------------------
Critical
values are 1 tailed ( k ® 5 )

A
Effluent Toxicity Report Form -Chronic Fathead Minnow Multi -Concentration Test Date:7/28/2023
Facility: Statesville - Third Creek
of
NPDES # NC00 20591 Pipe #: 001 County:
MAIL ORIGINAL TO: Water Sciences Section
Agnalie'roxicology Branch
Division of Water Resources
1621 Mail Service Center
Raleigh, N.C. 27699-162 t
Test Initiation Date/rime 7/18/2023 3:35 PM Avg Wt/Surv. Control 0,718
%Eff. Repl. 1 2 3 4
Control Surviving #
Original #
Wt/original (mg)
10.25 Surviving #
Original #
Wuoriginal (mg)
r-2-0-5-1 Surviving #
Original #
Wt/original (mg)
at Surviving #
Original #
Wuorginai (mg)
F6-1-5-1 Surviving It
Original #
Wuoriginal (mg)
82 Surviving #
Original #
Wucdginal (mg)
at Quality Data
Control
pH (SU) IniuFin
DO (mgtl) Init/Fin
Temp (0) IniuFin
High Concentration
pH (SU) ImVFm
DO (mg/L) Init/Fin
Temp (C) IniuFin
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
Chlorine(mg1L)
Temp. at Receipt (°C)
10-
10
9
10
10
10
� 0.697
0.650
7g8
0.639
10
10
ji 0
10
10
10
1 0,909
0,766
( 0.664
0.780
8
9 1 9
10
10
1
10
10
0.694
0.837
0.726
0,642
9
0
9
10
0
0
10
10
0,942
0,789
1 0.782
0.816
70
10
10
10
0,788
1 0,754
1 0,710
1 0.867
10
1 10
10
10
1 10
10_--
10
10
0,755
1 0.701
1 0.782
1 0.649
% Survival 9Z5
Avg Wt (mg) 0.696
% Survival 97.5
Avg Wt (mg) 0.777
% Survival 92.5
Avg Wt (mg) 0.675
% Survival 95.0
Avg Wt (mg) 0,832
% Survival 95.0
Avg Wt (mg) 0.780
% Survival 100,0
Avg Wt(mg) 0.742
Day
0 1 2 3 4 5 6
Test Organisms
i Cultured In -House
Outside Supplier
Hatch Date: 7/17/23
Hatch Time: 4:00.5ol) pm
7.81 1 7,56
17.84 1 7.70
7.77 1 7,50
7,73 1 7.70
7.85 / 7.80
17,86 1 7.53
T89 1 7.34
8.01 / 7,41
17,83 / 7.50
1 T75 / 7.51
17.76 / 7.55
17.78 1 7.91
18.15 1 7.23
7.81 1 6.44
24.5 / 24.3
1243 / 24.4
124.6 / 24.2
124.1 1 24.7
124,3 / 24.5
124,3 1 244
24.5 1 2At
0 1 2 3 4 5 6
7.63 1 7.55
7.53 / 7.71
7,41 l 7.51
17.43 1 7.66
7.48 1 7.63
7.57 1 7.40
7,40 / 7.40
7,98 1 7.42
7.91 / 7,58
7.82 r 7.30
7,83 1 7.45
7.82 1 7.96
16,10 1 7.40
17.92 1 7. 22
25.D / 24D
24.3 1 24.9
24.6 r 24A
24.2 1 24.7
25.8 / 24.4
124.3 1 24.3
124.4 1 24.5
1 2 3
7117/2023
7/19/2023
7/2012023
23.7
23.7
24D
46
50
52
47
43
36
487
479
492
<0.1
<0.1
<0.1
2.6
2A
1.9
Dilution H2O Batch*
atch# 3131 1433213 Hardness(mg/L) 3460 42 45
Alkalinity (mg/L) 31 31
162 177Conductivity (umhos/cm)
755
Survival
Growth Overall Result
Normal
rl
rl Chu, 782
Ham. Vac
F-1
131
NOEC
82
82
LOEC
>82
>82
ChV
>82
>62
Method
Steeps
Dunnetrs
Slats
Conc.
10.25
Survival
Critical Calculated
10 18
10 - 1,55
10-- 16
10 16
10 20
Growth
Critical Calculated
2,41-1.6054
20.5 r
2.41 0.4075
2.41-2.6854
41
815
2AI-1.6544
62
2.41 -0.9082

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9
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AffiEf I TECH INC'_
ENVIRONMENTAL LABORATORIES
A ONlsion of water icchno/o9y once Controls, Inc.
Chemical and Physical Determinations
Client: Statesville 3rd NPDEStt: 0020591 Start Date: 7/18/23
lest Organism: Pimenhales oromelas End Date: 7/25/23
Dav
Concentration: control
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
Soft Spnhetic Freshwater
Batch N-
I�G
� j
7
�?,�
`�
H: Initial
-7 - t
7t.'
7r 7
lt'7 3
u
7p
Final
7 5
,
7,5P
?,edG
7, 3
7t
D.O.: Initial
-c1
1,67
-7-1
,7�4.
%
S, S
7.01
Final
7, 1
?� 51
7, S-
-'10
IZ3
;, ii t
Temp,: Initial
I ?a
} f1. 3
:941
Final
Conductivity: Initial
t
U'
1
jq ti
Final
3 i
j
7
7 n
Residual Chlorine:
Li>-t
LO.t
40.t
ZO,
1_C-A
ZU,l
zf:'�5,
Hardness:
G
Alkalinity:
�7
Dav
Concentration: 10.25%
0-1
1-2
1 2.3
3.4
4-5
5-6
6-7
Remarks
pH: Initial
' .n
7, 12
7,70
7.7L
-1 `l
175
Final
7,yt/
1,53
'770
. & 3
7,(C
D.O.: Initial
1 ��(
-7, -7 �
'7,7
Final
1,2z
^A�
l..�r
Temp.: Initial
Lj,
L
Z
Zt.
Final
/
Conductivity: Initial
1 Q, 7z
(ir'�f
��''
` C,1
Final
I Gulf
1 W
-
}G
�)
' aFX
Residual Chlorine:
/-G. l
I l 0-1
I L. 6. t
/-b, i
G O l
/_ u_ t
1 C
Dav
Concentration: 20.50%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
'-1
7,67
7r7
7,70
j
)r r
Final
7411
-1-7
7tt/
D.O.: Initial
TV
.6.7
7.qI
Fetal
V 0
-%, i
-7,'3
7,' 6
rf'T
Tem .: Initial
Final
Conductivity: Initial`>
Final
Residual Chlorine:
/ U. i
0, 1
LG, I

MER17`EiCH� !NG'_
_ @NVt(Y6NMG+NTAL LA[30 PATp RIES
.. +!" -. tr....st.... ..i t,.rr..r rt. .........v+'.rn., crt.. r.. r.. ...
Chemical and Physical Determinations
Page 2 of'2
Client: Statesville 3rd NPDES#: 0020591 Start Date: 7/18/23
Test Organism: Pimeohales nrometas End Date: 7/25/23
Da
Concentration: 41.0%
0-1
1-2
2-3
3-4
4-5
5-6
6.7
Remarks
H: Initial
51
1,57
7i
"(- (1
7 7
Final
7, SY
—71
1,Y5
7.iv
-1 -11
7.Y9
Lt
D.O.: Initial
I
1,qr
� ,lt
7 ^.
Final
12
,iv
1,10
-7e
'7,5-0
r
temp.: Initial
74.Y
j
Final
2
7Ll
2-4.
t
Conductivity: Initial
4
a `7
Final
73
Residual Chlorine:
G0,1
v,t
/0.I
l_O i
1_0.1
G6,i
Da
Concentration: 61.5%
0-1
1-2
2-3
3-4
4-5
5-6
6-7
Remarks
pH: Initial
5?
-7,/3
')-
- L
7- Y
Final
1
7,
f i 1
*1r41
y
r I
-1,
7, Y.
"71
D.O.: Initial
'j,G C
!j
�;
`mod, I t
7 F
Final
1'
7,15
i
-,),q
7,4(q
7r
Temp.: Initial
`��-
-',Z. -�
fit(,`{
rL4,!�
Final
Lf, L4
-,"'W
Lief
6f,l�
Conductivity: Initial
�j )
3q5
�(
Final
'3 61
j`
1
Residual Chlorine:
L-G
Dav
Concentration: 82.0%
0-1
1-2
2-3
3-4
4-5
5.6
6-7
Remarks
pH: Initial
19
7
,41
j
'1 Ku
Final
l 55
-7, 71
1- l
L
"7. �i
1,
7 t1V
D.O.: Initial
16
t'
S. tv
772
-
Final
7,`{
l30
kS
-wl U
7.410
,(>-
Temp.: InitialLf,
Final
a
2y.y
)A .7
t
Conductivity: Initial
I—IA-3
4
t4,A-4
L4,
Final
Residual Chlorine:
GU; t
40.1
to IaG
Day
Concentration: 100%
0-1
1-2
G-7
Remarks
pH:
_i. Y
Conductivity:Residual
Chlorine:Hardness:Alkalinity:
M2-33-44.55-6
-9

MERITECH, INC.
Mortality Data: Chronic Fathead Test
Client: Statesville 3rd NPDES#: 0020591 Start Date: 7/18/23
Test Organism: Pimeohales prome/as End Date: 7/25/23
Concentration Control
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A 0
Rep B 0 _
Rep C 0 � /
Rep D 0
Concentration 10.25%
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A 0
Rep B 0
Rep C 0 _S` — r — 7
Rep D 0
Concentration 20.50%
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A 0 / l i
Rep B 0_- _ I ) l/ I
Rep C 0
Rep D 0

MERITECH, INC.
Mortality Data: Chronic Fathead Test
Client:
Statesville 3rd NPDES#: 0020591
Start Date:
7t18/23
Test Organism:
Pimephates Promelas
End Date
7/25/23
Concentration 41.0%
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A
0
Rep B
0
Rep C
0
Rep
0
4�—
- -
Concentration
61.6%
Tuesday
Wednesday Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Rep A
0
Rep B
0
Rep C
0
1�
Rep D
0
�
to
l
Concentration 82.0%
Tuesday Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Rep A 0
L
Rep B 0
Rep C 0 47)—
Rep D 0 —b`--
--0--
—�L
t�
—4—

AMERITEC"'r 11vc.
ENVIRONMENTAL LABORATOMES
Mir "I"IT, 11 s ..... ..........
FISH LARVAL SURVIVALIGROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Statesville 3rd
NPDES #: 0020591
Date of Test: 7/18/23
Initial weights taken on: Z-5-2-3 by: 6v-
'7-'
Final weights taken on: ,20',23- by: LAZ
Page: I of 2
Outfall:
Organism: Pimephates promelas
CONC
REP
PAN WT.
(mg)
PAN + ORG.
WT. (mg)
WT. OF ORG.
(mg)
it ORG,
MEAN
WTJORG. (mg)
SURV %
A
oil, f�
FJZ
62ff I
I
0
B
C
0
3/14
7, 1(,
—C
D
Fz,
r-1) 3
--Lon-
A
-7z/
q
B—
eq�5
75 6-7
5L
C-6
10.25%
t
C
D
FO I
F2X� C/
7, Fi
A
6, q
B
'qH
EN01
6, -7
&�j
10
20.50%
X
D

r -
EN IRONIVIENTAL LABORATORIES
. . ........ :, -,
FISH LARVAL SURVIVAL/GROWTH DATA SHEET
CHRONIC FATHEAD MINNOW
Facility: Statesville 3rd
NPIDES #: 0020591
Date of Test: 7/18/23
Initial weights taken on: 75 by:
Final weights taken on: Z-Z','123 by: t\,-
Blank Pan: Initialffl: t i Final ffl: FCV, -q
Page: 2 of 2
Outfall:-
Organism: Pimephales promelas
Difference!
CONC
REP
PAN WT.
PAN + ORG.
(mg)
WT. OF ORG.
#ORG.
MEAN
WT.IORG,(�mg)
SURV%
A
7(mZg)
YEDOZ2�
(?WT.
,
(,n
B
6709,116
-1(mUgQ)
9'16), 95
-7P, cl
10
CAR 7P)q I
100
41.0%
c
7
q0
D
7L
-7, FY
7o 5zl
q
1 0, 79
q
c
a
qv
2, 1 U
10
0, 7/0
C00
D
7
X-
->w6l
I7q
A
79?- 5
-7,'5
B
7-26-67
-7, W
7
C1, -721
/o..('
82.0%
C
7q q fqq
Zaz e I
/,y
D
--�;I
6
6)1 Cq((
L

f
MERITECH, INC. (Lab # 027) Merltech Sample ID 0:_
C 'l
l8toassav Sample Chain of Dustedv
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax: [phone]
Laboratory Supervisor E-mail: mike.reedCoTmeritechiabs.com Web Site: www.moritechiabs.com
Sample Site:
Sample Type:
Sampling Time: Start Date: �r Start Time: l(J M PM
End Date: End Time: � AM PM
Triple rinse sample container with sample bakes filling completely with NO AIR SPACE. Pack the sample cooler completely will, ice.
.. the sample must be < 0 0 :C, rn receipt at Medtoch t 1
Collector's Name. - h" Signig 2�(aX
mxetks�
TOXICITY TEST INFORMATION
Test Required: Chronic (7 days) Test Organism: Cerhedaphnia duble (water flea)
_.I Acute (24-48 hours) � Pimephales promelas (fathead minnow)
CI Mysidopsis bahla (mysid shrimp)
IWC: % ***Friday four Chronic Fathead test must be collected after 9:00 a.m. on Friday.—
Comments/Dliution(s); V 1 0 =? I alit B )_"-54S9 _ ._._.__
.• SHIPP NG INFORMA ION
Relinquished by: " „l/ -- Date: _ _ Time: � AM M
Received 6g✓_"- ---""' Date- 7. Time: /s_ AM
Relinquished byir'� -� /' Date: Time: S'pG% AM ``PArf1
Received by: Date: Time: _ AM PM
Relinquished by:___ _ -, Date: - Time: AM PM
Received by: J_ Date: Time: _ _ AM PM
Relinquished by: _ Date: _ Time: _ - AM PM
Received by: Date: Time: AM PM
Sample Temperature (°C):
Method of Shipment: [)UPS ❑Fed EX El,Meritech Pick-up (_j Delivered [] Other_ _
"' Samples shipped on Friday must be Fed Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED
�1 SAMPLE RECEIVING iMeritech Use Only)
Relinquished by. J� , . �1 ( k'Irar+(t , l tf, t�1{ �
Received by: _ 0�f`/11fiviri%�( Dete: y 4; g / 1 ime: 5T AM PM
Sample Temperatures(°C): ',t?.,,,_ SampleCondition
ems. WHITE = Laboratory copy YELLOW = Client copy
ic,T

Che
Contact Perso
Physical Addres
Mailing Addres
Ci
Coun
MERITECH, INC. (Lab # 027) IAntechSample UP:
_ (
Bloassay Sample Chain of Custody
642 Tamco Rd, Reidsville, N.C. 27320
Phone: [phone] Fax: [phone]
Laboratory Supervisor E-mail: mlke.ronefl%meritechlabs.com Web Site: www.moritechlabs.com
CLIENT INFORMATION
'Iru of
n: Q
s:
N: ��-+�i'Yi,`ia State: _ 1 \1 S.�_ zip: f
ty: _.J�.�� 21l E-mail:
Sample Site:
PO#:
NPDES#: _NC (^[�r�,..,t
Phone: -7pq cT 7,Y —42�
Pipe #. C) �_
Sample Type: ❑ Grab Composite # of co�
ntainers: _
Sampling Time: Start Date: - ) Start Time: 4� PM
End Date: —A-/ - A End Time: AM PM
—Triple rinse sample conperierwith sample before filling completely with NO AIRSPACE, Pack the sample hearer completely with ice.
The sample most be< 6.0°C upon rocolp(at Merdeeh %a, r r
.- kr ,tea ,d
Collector's Name:
TOXICITY TEST INFORMATION
Test Required: Chronic (7 days) Test Organism: � Cerlodaphnle dubie (water flea)
aphales promelas (fathead minnow]
D Acute (24-48 hours) APim
❑ Mystdopsls bahre (mysid shrimp)
WIG: % ***Friday Samples for Chronic Fathead test must be collected after 9:00 a.m, on Friday. —
Comments0lution(s):
SHIPPING INFORMATIONRelinquished
Date:
Receivedr-
tby:
Fic--- Date:Relinquishedi)�1---�
Date:
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_ Date:
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Date:
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Date:
Relinquished by:____
Dale:
_
Received by:
Date:
Sample Temperature (°C):
Time:
AM
�PM.
Time:
G
AM
l-�PC;
Time:
6l
AM
LM
Time:
_ _ _ _
AM
PM
Time: _
AM
PM
Time:
AM
PM
Time:
_
AM
PM
Time:
AM
PM
Method of Shipment: ❑ UPS ❑Fed EX ❑ Meritech Pick-up rj Delivered [_ll Other-
"' Samples shipped on Friday must be Pad Ex and must be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED ""
SAMPLE RECEIVING (Meritech Use Only)
r 1
Relinquished by: i r
n
Received ,( ed by: G"v - Date: _ J Time: '1-- AM PM
Sample Temperatures ("C): , lj_._..,.I 7_! / Sample Condition:
is 1111•- WHITE = Laboratory copy YELLOW = Client copy

? MERITECH, INC. (Lab # 027) PAedtechSample lDk
87oassa , Sample Chain of Coatedv
642 Tamw Rd, Reidsville, N.C. 27320
Phone: [phone] Fax: [phone]
Laboratory Supervisor E-mail: mike.reedComedtechlabs.com Web Site: www.meritechlabs.com
Client:
Contact Person:
Physical Address:
Mailing Address:
City:
County:
Sample Site:
Sample Type:
State:
Zip: QS (on_ 1
NPOESM NC �Atd
Phone: %(`j
Pipe a:
Sampling Time: Start Date: -- i a o- Start Time: G , ej AM PM
End Date: IA.) __123 End Time: 17, Liss- A PM
Triple rinse sample container with sample before filling completely with NO AIR SPACE. Pack the sample cooler completely with ice.
�$� 1p most ba:K A A C upon receipt at Merltech �{«
Prmt 2- %It 4#S A1I'f�!'bv'^ t 9 4 r ".Alt-
Collectors Name Sv... Sinet s
TOXICITY TEST INFORMATION
..7
Test Required: Chronic (7 days) Test Organism: Ceriodaphnia liable
(water flea)
Acute (24-48 hours) Phr ephales promelas
(fathead minnow)
[) Mysidopsls bahis payed shrimp)
IWC: % *" Friday Samples for Chronic Fathead test must be collected
after 9:00 a.m. on
Friday. **'
Commentsipflutlon(s): �V 5) L U I( lt 8A
_ _
SHIPPING INFORMATION
��
Relinquished by y _ Date: Z2i Z,3
Time -
1.,
AM
rd
Received by: ,i4 Dete: _^^qq
Tlme: un
^f
AMf
Relinquished by 64A Date:..,_n" "O`.-._ _--.
Time: { _
A PM !
Received by: __- Dale: _
Time: u_
AM PM
Relinquished by: _ Date: _ _
Time: _
AM PM
Received by: _ _ _ Date: _
Time:
AM PM
Relinquished by: Date: . _
Time:
AM PM
Received by: Date:
Time:
AM PM
Sample Temperature (°C):
Method of Shipment: ❑ UPS ❑Fed EX t Merltech Pick-up !Fj Delivered ❑Other _
"' Samples shipped on Friday must be Fed Ex and most be clearly labeled for Saturday Delivery, NO SIGNATURE REQUIRED
SAMPLE RECEIVING (MeriteCh Use OnIV)
i Relinquished by
Received by: ! i`%"l. Mtn'" Date: '� Time Itf AM (PM
Sample Temperatures (C):� (_ f i t _Lj! Sample Condition t _ _
all WHITE = Laboratory copy YELLOW = Client copy

Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Shapiro - Wilk's Test for Normality
----------------------------------------------------------------------------
D = 0.0934
W = 0.9686
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
----------------------------------------------------------------------------
Data PASS normality test (alpha = 0.01). Continue analysis.

r
Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Bartlett's Test for Homogeneity of Variance
----------------------------------------------------------------------------
Calculated B1 statistic = 1.9473 (p-value = 0,8564)
Data PASS B1 homogeneity test at 0.01 level. Continue analysis.
--------------------- ------------------------------------------------------
Critical B = 15.0863 (alpha = 0.01, df = 5)
= 11.0705 (alpha = 0.05, df = 5)

K Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
ANOVA Table
----------------------------------------------------------------------------
SOURCE DF SS MS F
-------------------------------------- -------------------------------------
Between 5 0.0684 0.0137 2.6366
Within (Error) 18 0.0934 0.0052
----------------------------------------------------------------------------
Total 23 0.1617
----------------------------------------------------------------------- — ---
(p-value = 0.0587)
Critical F = 4.2479 (alpha = 0.01, df = 5,18)
= 2.7729 (alpha = 0.05, df = 5,18)
Since F < Critical F FAIL TO REJECT Ho: All equal (alpha = 0.05)

Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Dunnett's Test -
TABLE 1 OF 2
Ho:Control<Treatment
------------------
--------------------------------------------------------
TRANSFORMED
MEAN CALCULATED IN
SIG
GROUP
IDENTIFICATION
MEAN
ORIGINAL UNITS
T STAT 0.05
-------------------------
1
Control
-----------
0.6955
------------------
0.6955
------ ---
2
10.25
0.7773
0.7773
-1.6054
3
20.5
0.6748
0.6748
0.4075
4
41
0.8322
0.8322
-2.6854
5
61.5
0.7798
0.7798
-1.6544
6
82
0.7418
0.7418
-0.9082
----------------------------------------------------------------------------
Dunnett
critical value = 2,4100 (1 Tailed,
alpha = 0.05, df =
5,18)
Title: 3rd
File: 3rdGrowth Transform: NO TRANSFORMATION
Dunnett's Test -
TABLE 2
OF 2 Ho:Control<Treatment
----------------------------------------------------------------------------
NUM OF
MIN SIG DIFF
% OF
DIFFERENCE
GROUP
IDENTIFICATION
REPS
(IN ORIG. UNITS)
CONTROL
-------
FROM CONTROL
------------
-----
1
--------------------
Control
-------
4
----------------
2
10.25
4
0.1227
17.6
-0.0818
3
20.5
4
0.1227
17.6
0.0207
4
41
4
0.1227
17.6
-0.1367
5
61.5
4
0.1227
17.6
-0.0843
6
---------------------------------------------------------
82
4
0.1227
17.6
— -----------------
-0.0463

Title: 3rd
File: 3rdSurvival Transform: NO TRANSFORMATION
Shapiro - Wilk's Test for Normality
---------------------------------------------------------------------------
D = 0.0625
W = 0.9335
Critical W = 0.8840 (alpha = 0.01 , N = 24)
W = 0.9160 (alpha = 0.05 , N = 24)
----------------------------------------------------------------------------
Data PASS normality test (alpha = 0.01). Continue analysis.

Title: 3rd
File: 3rdSurvival Transform: NO TRANSFORMATION
Hartley-s Test for Homogeneity of Variance
Bartlett's Test for Homogeneity of Variance
--------------------------------------------------------------------------
These two tests can not be performed because at least one group has
zero variance.
Data FAIL to meet homogeneity of variance assumption.
Additional transformations are useless.

Title: 3rd
File: 3rdSurvival Transform: NO TRANSFORMATION
Steel's Many -One
Rank Test
- Ho:
Control<Treatment
---------------------------------------------------------------------------
MEAN IN
RANK
CRIT.
SIG
GROUP
IDENTIFICATION
ORIGINAL UNITS
SUM
VALUE
------
OF 0.05
----- ---
-------------------------
1
Control
-----------
0.9750
-------
2
10.25
0.9750
18.00
10.00
4.00
3
20.5
0.9250
15.50
10.00
4.00
4
41
0.9500
16.00
10.00
4.00
5
61.5
0.9500
16.00
10.00
4.00
6
82
1.0000
20.00
10.00
4.00
-------
-----------------------
Critical
--------------- ---------------------------
values are 1 tailed ( k = 5 )

Sludge Management Description
3rd Creek WWTP
Solids are disposed of through Class B Land Application by Synagro, Permit #WQ0016247.
Solids also disposed of through City of Statesville Class A Permit #WQ0006245.

A
B C D E F I G I H I I I J K L M
N O P
1
NPDES/PT POC Review Form
Version:2022.06.22
2
1. Facility's General Information
3
Date of (draft) Review
4/15/2024
c. POC review due to:
e. Contact Information
4
Date of (final) Review
Municipal NPDES renewal
0
Regional Office (RO)
Mooresville
5
NPDES Permit Writer (pw)
Gary Perlmutter
HWA-AT/LTMP Review
❑
RO PT Staff
Wes Bell
RO NPDES Staff
Andrew Pitner
6
Perm ittee- Facility Name
Statesville - Third Creek WWTP
New Industries
❑
Facility PT Staff, email
Brandy Johnson, blohnson(G)statesvillenc.net
7
NPDES Permit Number
NCO020591
WWTP expansion
❑
f. Receiving Stream
8
NPDES Permit Effective Date
Stream reclass./adjustment
❑
Outfall 1
9
Chemical Addendum Submittal Date
Outfall relocation/adjustment
❑
Receiving Stream:
Third Creek
QA, cfs:
10
NPDES Permit Public Notice Date
7Q10 update
❑
Stream Class
C
7Q10 (S), cfs:
11
eDMR data evaluated from:
to
Other POC review trigger, explain:
Oufall Lat.
35044' 17" N
Outfall Long.
80050'28"W
12
a. WWTP Capacity Summary
Outfall II
13
Current Permitted Flow, mgd
6.0
Designed Flow,
m d
6.(
Receiving Stream:
QA, cfs:
14
Permitted SIU Flow, mgd
0.24
d. IU Summary
Stream Class
7Q10, cfs:
15
b. PT Docs. Summary
# IUs
Oufall Lat.
Outfall Long.
16
L
IWS approval date
10/14/2021
# SIUs
5
Is there a PWS downstream of the Facility's Outfalls?
❑ YES ❑ NO
17
a)
L/STMP approval date:
4/2/2019
# CIUs
3
Comments:
18
E
U)
LU
HWA approval date
# NSCIUs
19
# IUs w/Local
Permits or Other
ITypes
20
Z
2. Industrial Users' Information.
21
#
Industrial User (IU) Name
IU Activity
IU Non Conventional Pollutans & Toxic Pollutant
IUP Effective Date
22
1
Cintas Corp.
Textiles
Flow, BOD, TSS, Temperature, pH, Ammonia, Cd, Cr, Cu, CN, COD, Pf, Ni, O&G, Ag, Zn
8/21/2023
23
2
Hi -Tech Plating
Metal Finisher
Flow, BOD, TSS, Temperature, pH, Ammonia, Cd, Cr, Cu, CN, COD, Pf, Ni, O&G, Ag, Zn, TTO
9/30/2020
24
3
JPS Composite Materials, Inc.
Textiles
Flow, BOD, TSS, Temperature, pH, Ammonia, Cd, Cr, Cu, CN, COD, Pf, Ni, O&G, Ag, Zn
3/1/2021
25
4
KECO Textured Coatings
Metal Finisher
Flow, BOD, TSS, Temperature, pH, Ammonia, Cd, Cr, Cu, CN, COD, Pf, Ni, O&G, Ag, Zn, TTO
3/30/2023
26
5
Kewaunee Scientific Corp.
Metal Finisher
Flow, BOD, TSS, Temperature, pH, Ammonia, Cd, Cr, Cu, CN, COD, Pf, Ni, O&G, Ag, Zn, TTO
3/1/2021
31
Comment:
IUP for SDFC, LLC was dropped in August 2022.
3. Status of Pretreatment Program (check all that apply)
32
33
Status of Pretreatment Program (check all that apply)
34
❑
1) facility has no SIUs, does have Division approved Pretreatment Program that is INACTIVE
35
❑
2) facility has no SIU's, does not have Division approved Pretreatment Program
3) facility has SIUs and DWQ approved Pretreatment Program
36
p
37
p
3a) Full Program with LTMP
38
3b)Modified Program with STMP
39
IE]]
4) additional conditions regarding Pretreatment attached or listed below
40
5) facility's sludge is being land applied or composted
41
❑
6) facility's sludge is incinerated (add Beryllium and Mercury sampling according to § 503.43)
42
❑
7) facility's sludge is taken to a landfill, if yes which landfill:
43
❑
8) other
44
Sludge Disposal Plan:
Biosolids are disposed of through Class B land application by Synagro via Permit WQ0016247, and through the Statesville Class A permit WQ0006245.
45
46
47
1 Sludge Permit No:
see above
Page 1 20591 POC Review Form2024

A
B C D E F G H I I J I K I L M N O P
48
4. LTMP/STMP and HWA Review
49
PW: Find USTMP document, HWA spreadsheet, DMR, previous and new NPDES permit for next section.
50
a
J
c
U
a
Parameter of Concern
(POC) Check List
New
NPDES
POC
Previous
NPDES
POC
Required by
EPA PT(1)
POC due to
Sludge (2)
POC due to
SIU (3)
POTW
POC (4)1
L/STMP
I Effluent Freq
NPDES
Effluent Freq
PQLs review
Comment
51
o
/o
Removal
Rate
PQL from
L/STMP, ug/I
Required PQL
per NPDES
permit
Recomm.
PQL, ug/I
52
❑r
Flow
❑
❑�
❑�
ElQuarterly
Continuous
53
❑r
BOD
0
0
❑
Quarterly
Daily
2 mg/L
54
❑r
TSS
❑
0
0
❑
Quarterly
Daily
2.5 mg/L
55
❑�
NH3
❑
❑
Quarterly
Daily
0.1 mg/L
56
❑r
Arsenic
❑
❑
0
0
❑
Quarterly
5.0
2.0
Reduce PQL to recommended level
57
❑
Barium
❑
❑
❑
❑
❑
58
❑
Beryllium(5)
❑
❑
❑
❑
❑
59
❑r
Cadmium(1)
❑
❑
0
❑
0
❑
Quarterly
0.4
0.5
60
0
Chromium(l)
❑
❑
0
0
0
❑
Quarterly
2.0
10.0
61
❑r
Copper(1)
❑
0
0
0
0
❑
Quarterly
Monthly
2.0
2.0
62
p
Cyanide
❑
❑
❑
0
❑
Quarterly
5.0
63
p
Lead(1)
❑
❑
❑r
❑r
0
❑
Quarterly
3.0
2.0
Reduce PQL to recommended level
64
0
Mercury(5)
❑
❑
❑./
0
❑
Quarterly
0.001
0.001
65
❑�
Molybdenum
❑
❑
0
0
❑
Quarterly
2.5
10.0
66
❑�
Nickel(1)
❑
❑
0
0
❑r
❑
Quarterly
2.0
5.0
67
0
Selenium
❑
❑
❑./
0
❑
Quarterly
5.0
68
0
Silver
❑
❑
❑
0
❑
Quarterly
0.5
1.0
69
p
Zinc(1)
❑
❑
❑
Quarterly
10.0
10.0
70
p
Sludge Flow to Disposal
p
❑
❑
Quarterly
71
p
% Solids to Disposal
❑
❑
❑
Quarterly
72
p
Oil & Grease
0
❑
Quarterly
73
❑r
TN
❑
❑r
❑
❑
Quarterly
Weekly
0.2 mg/L
74
❑r
TP
❑
❑r
❑
❑
Quarterly
Weekly
0.16 mg/L
75
0
COD
❑
❑
0
❑
Quarterly
20 mg/L
76
0
Bis(2-ethylhexyl)
phthalate
❑
0
❑
❑
Quarterly
Monthly
10.0
77
❑
❑
❑
❑
78
❑
❑
❑
❑
❑
79
❑
❑
❑
❑
❑
80
❑
❑
❑
❑
❑
81
❑
❑
❑
❑
❑
82
Footnotes:
83
(1) Always in the LTMP/STMP due to EPA -PT requirement
84
(2) Only in LTMP/STMP if listed in sludge permit
85
(3) Only in LTMP/STMP while SIU still discharges to POTW
86
(4) Only in LTMP/STMP when pollutant is still of concern to POTW
87
(5) In LTMP/STMP, if sewage sludge is incinerated
88
Please use blue font for the info updated by pw
89
Please use red font for POC that need to be added/modified in LJSTMP sampling
plan
90
91
Blue shaded cell (D60:H82):
Parameters usually included under that POC list
92
5. Comments
93
Facility Summary/background information/NPDES-PT regulatory action:
POC to be added/modified in L/STMP:
94
ORC's comments on IU/POC:
95
POC submitted through Chemical
Addendum or Supplemental Chemical
Datasheet:
96
Additional pollutants added to L/STMP due
to POTW s concerns:
97
NPDES pw's comments on IU/POC:
98
6. Pretreatment updates in response to NPDES permit renewal
99
NPDES Permit Effective Date
180 days after effective (date):
I
Permit writer, please add list of required/recommended PT updates in NPDES permit cover letter.
Page 2 20591 POC Review Form2024

MONITORING REPORT(MR) VIOLATIONS for:
Report Date:
09/17/24 Page
1 of 1
Permit: NCO020591
MRS Betweei 8 - 2019 and 9 - 2024
Region: %
Violation Category:%
Program Category:
Facility Name: %
Param Nam(%
County: %
Subbasin: %
Violation Action: %
Major Minor: %
PERMIT: NCO020591
FACILITY: City of Statesville -Third Creek WWTP
COUNTY: Iredell
REGION: Mooresville
Limit Violation
MONITORING
VIOLATION
UNIT OF
CALCULATED
%
REPORT OUTFALL
LOCATION PARAMETER
DATE FREQUENCY
MEASURE
LIMIT
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
05 - 2021 001
Effluent Nitrogen, Ammonia Total (as
05/31/21 5 X week
mg/I
2.1
2.87
36.8
Monthly Average
Proceed to
N) - Concentration
Exceeded
Enforcement Case
Other Violation
MONITORING
VIOLATION
UNIT OF
CALCULATED
%
REPORT OUTFALL
LOCATION PARAMETER
DATE FREQUENCY
MEASURE
LIMIT
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
08-2020
08/03/20
Aquatic toxicity permit
Proceed to NOV
limit violation

Whole Effluent Toxicity Testing and Self Monitoring Summary
Statesville Third Creek WWTP
NC0020591/001 County: Iredell
Region:
MRO
Basin:
YAD06
Jan Apr Jul Oct
Ceri7dPF Begin:
2/1/2020 chr lim: 4 MGD @ 39 NonComp: Single
7Q10:
9.8
PF: 6.0
IWC: 39
Freq: Q
J
F M A
M
J
J
A
S
O
2020 Pass
- - Pass
-
-
Fail
Fail
>82
Pass
2021 Pass>82
Pass>82 Pass>82 Pass>82
Pass
-
Pass>82
Pass
-
Pass
2022 Pass
- - Pass
-
-
Pass
-
-
Pass
2023 Pass>82
Pass>82 - Pass>82
-
-
Pass>82
-
-
Pass
2024 Pass
- - Pass
-
-
Pass
-
-
-
Stepan Company - Wilmington
Facility NC0001112/002 County: New Hanover
Region:
WIRO
Basin:
CPF17
Feb May Aug Nov
Fthd24PF Begin:
4/1/2018 24hr ac p/f lim: 90%f + NonComp: Single
7Q10:
Tidal
PF: 1.25
IWC: NA
Freq: Q
J
F M A
M
J
J
A
S
O
2020 -
Pass - -
Pass
-
-
Pass
-
-
2020 -
Pass - -
Pass
-
-
Pass
Pass
-
-
2021 -
Pass - -
Pass
-
-
Pass
-
-
2021 -
Pass - -
Pass
-
-
Pass
-
-
2022 -
Pass - -
Pass
-
-
Pass
-
-
2022 -
Pass - -
Pass
-
-
Pass
-
-
2023 -
Pass - -
Pass
-
-
Pass
-
-
2023 -
Pass - -
Pass
-
-
Pass
-
-
2024 -
Pass - -
Pass
-
-
Pass
-
-
2024 -
Pass - -
Pass
-
-
Pass
-
-
Stumpy Point (RO) WTP
NC0086932/001 County: Dare
Region:
WARO
Basin:
PAS55
Jan Apr Jul Oct
Mysd24PF Begin:
10/1/2018 Mysid Acu 24hr PF M NonComp:
7Q10:
0
PF: 0.043
IWC: 100
Freq: Q
J
F M A
M
J
J
A
S
O
2020 Pass
- - Pass
-
-
Fail
-
-
Pass
2021 Pass
- - Fail
-
-
Pass
-
-
Pass
2022 Pass
- - Fail
-
-
Fail
-
-
Fail
2023 Pass
- - Pass
-
-
Pass
-
-
Pass
2024 Pass
- - Fail
-
-
Fail
-
-
-
Sugar Mountain Utilities
NC0022900/001 County: Avery
Region:
ARO
Basin:
WAT01
Jan Apr Jul Oct
Ceri7dPF Begin:
10/1/2017 chr lim: 0.5 MGD @ 7 NonComp: Single
7Q10:
0.30
PF: 0.50
IWC: 72.0
Freq: Q
J
F M A
M
J
J
A
S
O
2020 Pass
- - Pass
-
-
Pass
-
-
Pass
2021 Pass
- - Pass
-
-
Pass
-
-
Pass
2022 Pass
- - Pass
-
-
Pass
-
-
Pass
2023 Pass
- - Pass
-
-
Pass
-
-
Pass
2024 Pass
- - Pass
-
-
-
-
-
-
Sunoco Midstream - Selma
NCO027227/001 County: Johnston
Region:
RRO
Basin:
NEU02
Mar Jun Sep Dec
Fthd24PF Begin:
12/1/2013 ANNUAL fthd24pf if f NonComp:
7Q10:
0.0
PF: VAR
IWC: 100
Freq: A
J
F M A
M
J
J
A
S
O
2023 -
- - -
-
-
H
-
-
H
SOC JOC:
N D
SOC JOC:
N
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
SOC JOC:
N
SOC JOC:
N
SOC JOC:
N
C
C
D
C
Leeend: P= Fathead minnow (Pimohales oromelas). H=No Flow (facilitv is active). s = Solit test between Certified Labs Page 100 of 114

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 IN 1 2 u 3 I NC0020591 I11 121 24/01/25 I17 181 D I 19 I s I 20L]
21111I I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I I I I r6
Inspection
Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved -------------------
67
2.0 701d I 71 I„ I 72 I r., I 71 I 74 79 I I I I I I I80
L—I ty L-1 I I
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
09:06AM 24/01/25
20/02/01
Third Creek WWTP
444 Third Creek Rd
Exit Time/Date
Permit Expiration Date
Statesville NC 28687
12:45PM 24/01/25
24/03/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Brandy Johnson///
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Andy Smith,PO Box 1111 Statesville NC 286871111//704-878-3438/7048788655
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Pretreatment
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Wes Bell DWR/MRO WQ/704-235-2192/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#

NPDES yr/mo/day Inspection Type
NCO020591 I11 12I 24/01/25 117 18 1 p I
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
The City currently has 9 SIUs with 6 being CIUs. No SIUs were in SNC for 2023
inspected and sampled in 2023.
The records reviewed during the inspection were organized and well maintained
Pretreatment Program was being properly implemented.
All SIUs were
The City;s Industrial
Page#

Permit: NC0020591
Inspection Date: 01/25/2024
Owner -Facility: Third Creek WWTP
Inspection Type: Pretreatment Compliance
Yes No NA NE
Page#

NH3/TRC WLA Calculations
Statesville -Third Creek WWTP
PermitNo. NC00220591
Prepared By: Gary Perlmutter
Enter Design Flow (MGD): 6.0
Enter s7Q10 (cfs): 13.2
Enter w7Q10 (cfs): 17.0
Total Residual Chlorine (TRC)
Ammonia (Summer)
Daily Maximum Limit (ug/l)
Monthly Average Limit (mg NH3-N/l)
s7Q10 (CFS) 13.2
s7Q10 (CFS)
13.2
DESIGN FLOW (MGD) 6
DESIGN FLOW (MGD)
6
DESIGN FLOW (CFS) 9.3
DESIGN FLOW (CFS)
9.3
STREAM STD (UG/L) 17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/l) 0
Upstream Bkgd (mg/1)
0.22
IWC (%) 41.33
IWC (%)
41.33
Allowable Conc. (ug/l) 41.1
Allowable Conc. (mg/l)
2.1
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/l)
Fecal Coliform
w7Q10 (CFS)
17
Monthly Average Limit: 200/100ml
DESIGN FLOW (MGD)
6
(If DF>331; Monitor)
DESIGN FLOW (CFS)
9.3
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF) 2.42
Upstream Bkgd (mg/1)
0.22
IWC (%)
35.36
Allowable Conc. (mg/l)
4.7
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/l to protect for acute
toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/l, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals);
capped at 35 mg/l
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis);
capped at 35 mg/l
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)

Analytical Results
City of Statesville WWTP
PO Box 1111
Statesville, NC 28687
Receive Date: 05/01/2024
Reported: 05/09/2024
For:
Comments:
STATESVILLE
ANALYTICAL
Sample Number
Parameter
Sample ID
Result
Unit Method
Analyzed
Analyst
240501-27-01
Hardness
UP 04/25
15.1
mg/L CaCO3 calculation
05/08/2024
MD
240501-27-02
Hardness
UP 04/26
6.57
mg/L CaCO3 Calculation
05/08/2024
MD
240501-27-03
Hardness
UP 04/29
31.4
mg/L CaCO3 Calculation
05/08/2024
MD
240501-27-04
Hardness
UP 04/30
2.1
mg/L CaCO3 Calculation
05/08/2024
MD
240501-27-05
Hardness
UP 05/01
2.24
mg/L CaCO3 calculation
05/08/2024
MD
Respectfully submitted,
%ly%G�GQ42 LP. �uaL��
l/
Melissa Myers
NC Cert #440,
NCDW Cert #37755,
EPA #NC00909
PO Box 228 • Statesville, NC 28687 • 704/872/4697
Page 1 of 3

Condition of Receipt
Sample Number 240501-27-01 Temp on Arrival: 5.0
pH on Arrival: <2
Parameter Schedule: Hardness
Nitric Acid Received on Ice
Chemicals in containers, lab
Sample Number 240501-27-02 Temp on Arrival: 5.0
pH on Arrival: <2
Parameter Schedule: Hardness
Sample Number 240501-27-03 Temp on Arrival: 5.0
pH on Arrival: <2
Received on Ice
Chemicals in containers, lab
Parameter Schedule: Hardness
Sample Number 240501-27-04 Temp on Arrival: 5.0
pH on Arrival: <2
Received on Ice
Chemicals in containers, lab
Parameter Schedule: Hardness
Received on Ice
Chemicals in containers, lab
Sample Number 240501-27-05 Temp on Arrival: 5.0
pH on Arrival: <2 Parameter Schedule: Hardness
Received on Ice
Chemicals in containers, lab
PO Box 228 • Statesville, NC 28687 • 704/872/4697
Page 2 of 3

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PO Box 228 • Statesville, NC 28687 • 704/872/4697
Page 3 of 3

NH3/TRC WLA Calculations
Statesville -Third Creek WWTP
PermitNo. NC00220591
Prepared By: Gary Perlmutter
Enter Design Flow (MGD): 8.0
Enter s7Q10 (cfs): 13.2
Enter w7Q10 (cfs): 17.0
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/l)
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/1)
s7Q10 (CFS)
13.2
s7Q10 (CFS)
13.2
DESIGN FLOW (MGD)
8
DESIGN FLOW (MGD)
8
DESIGN FLOW (CFS)
12.4
DESIGN FLOW (CFS)
12.4
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/l)
0
Upstream Bkgd (mg/1)
0.22
IWC (%)
48.44
IWC (%)
48.44
Allowable Conc. (ug/l)
35.1
Allowable Conc. (mg/l)
1.8
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
Fecal Coliform
w7Q10 (CFS)
17
Monthly Average Limit:
200/100m1 DESIGN FLOW (MGD)
8
(If DF>331; Monitor)
DESIGN FLOW (CFS)
12.4
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF)
2.06 Upstream Bkgd (mg/l)
0.22
IWC (%)
42.18
Allowable Conc. (mg/l)
4.0
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/l to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/l, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/l
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/l
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
Table 1. Project Information
❑ CHECK IF HQW OR ORW WQS
Facility Name
WWTP/WTP Class
NPDES Permit
Outfal I
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
Statesville - Third Creek WWTP
Grade IV
NCO021024
001
6.000
Third Creek
03040102
C
❑ Apply WS Hardness WQC
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1 Q10s (cfs)
Effluent Hardness
Upstream Hardness
Combined Hardness Chronic
Combined Hardness Acute
Data Source(s)
13.20
17.00
21.00
56.00
10.93
36.84 mg/L (Avg)
11.48 mg/L (Avg)
_ _ _ _ _ _ _ _ 25 mg/L
25 mg/L
Permittee-submitted DMRs and PPAs; upstream
hardness data provided by the Permittee on request.
❑ CHECK TO APPLY MODEL
Follow directions for data entry. In some cases a
REQUIRED DATA ENTRY
Par01
Par02
Par03
Par04
Par05
Par06 1111111
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Par23
Par24
Par25
Table 2. Parameters of Concern
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
0.5899
FW
3.2396
ug/L
Chlorides
Aquatic Life
NC
230
FW
mg/L
Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
111111110 Total Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium III
Aquatic Life
NC
117.7325
FW
905.0818
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
7.8806
FW
10.4720
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
2.9416
FW
75.4871
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
ng/L
Molybdenum
Human Health
NC
2000
HH
ug/L
Nickel
Aquatic Life
NC
37.2313
FW
335.2087
pg/L
Nickel
Water Supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
3.1
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
0.2964
ug/L
Zinc
Aquatic Life
NC
126.7335
FW
125.7052
ug/L
Bis(2-ethylhexyl) phthalate
Human Health
C
0.37
HH
pg/L
Chloroform
Human Health
NC
2000
HH
pg/L
Dichlorobromomethane
Human Health
C
27
HH
pg/L
Toluene
Aquatic Life
NC
11
FW
pg/L
20591 RPA 6.0 MGD, input
10/2/2024

REASONABLE POTENTIAL ANALYSIS
H1
H2
Use "PASTE SPECIAL-
Use "PASTE SPECIAL -
Effluent Hardness
Values" then "COPY".
Upstream
Hardness
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
36
36
Std Dev.
10.2094
1
4/25/2024
15.1
15.1
Std Dev.
12.3225
2
3/24/2020
43
43
Mean
36.8441
2
4/26/2024
6.57
6.57
Mean
11.4820
3
6/8/2020
40.2
40.2
C.V.
0.2771
3
4/29/2024
31.4
31.4
C.V. (default)
0.6000
4
8/18/2020
36
36
n
22
4
4/30/2024
2.1
2.1
n
5
5
9/4/2020
14.37
14.37
10th Per value
28.06 mg/L
5
5/1 /2024
2.24
2.24
10th Per value
2.16 mg/L
6
12/3/2020
16.9
16.9
Average Value
36.84 mg/L
6
Average Value
11.48 mg/L
7
3/3/2021
32.7
32.7
Max. Value
56.00 mg/L
7
Max. Value
31.40 mg/L
8
4/14/2021
32
32
8
9
6/1/2021
33.9
33.9
9
10
9/1/2021
30.8
30.8
10
11
12/1/2021
56
56
11
12
3/1/2022
38
38
12
13
6/1/2022
36
36
13
14
7/11 /2022
32
32
14
15
9/1/2022
48.2
48.2
15
16
12/5/2022
51.1
51.1
16
17
3/13/2023
39
39
17
18
6/1/2023
52.2
52.2
18
19
7/17/2023
44
44
19
20
9/1/2023
40
40
20
21
12/11/2023
30.4
30.4
21
22
3/4/2024
27.8
27.8
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
20591 RPA 6.0 MGD, data
-2- 10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par01 & Par02
Date Data
1 3/9/2020 <
2 6/8/2020 <
3 8/18/2020 <
4 9/14/2020 <
5 12/7/2020 <
6 3/15/2021
7 4/14/2021 <
8 6/14/2021 <
9 9/13/2021 <
10 12/6/2021 <
11 3/7/2022 <
12 6/6/2022 <
13 7/11 /2022 <
14 9/12/2022 <
15 12/12/2022 <
16 3/13/2023 <
17 6/19/2023 <
18 7/17/2023 <
19 9/11 /2023 <
20 12/11/2023 <
21 3/11 /2024 <
22 6/10/2024 <
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Par03
Use "PASTE SPECIAL-
Use "PASTE SPECIAL -
Arsenic
Values" then "COPY".
Beryllium
Values" then "COPY".
Maximum data points
Maximum data points
= 58
= 58
BDL=1/2DL
Results
Date Data
BDL=1/2DL
Results
2
1
Std Dev.
1.5332
1
4/15/2021 <
5 2.5
Std Dev.
0.0000
2
1
Mean
1.9432
2
7/12/2022 <
5 2.5
Mean
2.5000
10
5
C.V.
0.7890
3
7/19/2023 <
5 2.5
C.V. (default)
0.6000
2
1
n
22
4
n
3
2
1
5
2.5
2.5
Mult Factor =
1.42
6
Mult Factor =
3.00
10
5
Max. Value
5.0 ug/L
7
Max. Value
2.50 ug/L
2.5
1.25
Max. Pred Cw
7.1 ug/L
8
Max. Pred Cw
7.50 ug/L
5
2.5
9
2.5
1.25
10
2
1
11
2
1
12
10
5
13
2
1
14
2
1
15
2.5
1.25
16
2.5
1.25
17
10
5
18
2.5
1.25
19
2.5
1.25
20
2.5
1.25
21
2
1
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
20591 RPA 6.0 MGD, data
-3- 10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par04
Cadmium
Use "PASTE SPECIAL -
Values" then "COPY".
Par05
Maximum data points
= 58
Date
Data
BDL=1/2DL
Results
1
3/9/2020
<
0.4
0.2
Std Dev.
0.3240
1
2
6/8/2020
<
0.4
0.2
Mean
0.3511
2
3
8/18/2020
<
2
1
C.V.
0.9227
3
4
9/14/2020
<
0.4
0.2
n
22
4
5
12/7/2020
<
1
0.5
5
6
3/15/2021
<
0.5
0.25
Mult Factor =
1.49
6
7
4/14/2021
<
2
1
Max. Value
1.000 ug/L
7
8
6/14/2021
<
0.4
0.2
Max. Pred Cw
1.490 ug/L
8
9
9/13/2021
<
0.5
0.25
9
10
12/6/2021
<
0.5
0.25
10
11
3/7/2022
<
0.5
0.25
11
12
6/6/2022
<
0.15
0.075
12
13
7/11 /2022
<
2
1
13
14
9/12/2022
<
0.15
0.075
14
15
12/12/2022
<
0.15
0.075
15
16
3/13/2023
<
0.4
0.2
16
17
6/19/2023
<
0.4
0.2
17
18
7/17/2023
<
2
1
18
19
9/11 /2023
<
0.4
0.2
19
20
12/11/2023
<
0.4
0.2
20
21
3/11 /2024
<
0.4
0.2
21
22
6/10/2024
<
0.4
0.2
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
Date Data
Chlorides
BDL=1/2DL Results
Std Dev
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL -
Values" then "COPY".
Maximum data points = 58
NO DATA
NO DATA
NO DATA
0
N/A
N/A mg/L
N/A mg/L
20591 RPA 6.0 MGD, data
-4- 10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par06 Par07
Use "PASTE SPECIAL -
Chlorinated Phenolic Compounds Values" then "COPY
Maximum data points
= 58
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Date Data BDL=1/2DL Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Total Phenolic Compounds
1
Date Data
4/15/2021 <
NO DATA
NO DATA
2
7/12/2022
NO DATA
3
7/19/2023 <
0
4
5
N/A
6
N/A ug/L
7
N/A ug/L
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
BDL=1/2DL
Results
10 5
Std Dev.
12 12
Mean
10 5
C.V. (default)
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL -
Values" then "COPY".
Maximum data points
= 58
4.0415
7.3333
0.6000
3
3.00
12.0 ug/L
36.0 ug/L
20591 RPA 6.0 MGD, data
-5- 10/2/2024

REASONABLE POTENTIAL ANALYSIS
20591 RPA 6.0 MGD, data
10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par10
Pall
Use "PASTE SPECIAL-
Use "PASTE SPECIAL -
Chromium, Total
Values" then "COPY".
Copper
Values" then "COPY".
Maximum data points
Maximum data points
=58
=58
Date
Data
BDL=1/2DL
Results
Date
Data
BDL=1/2DL
Results
1
3/9/2020
<
2
1
Std Dev.
1.1376
1
2/10/2020
< 10
5
Std Dev.
6.1313
2
6/8/2020
<
3
1.5
Mean
1.6455
2
3/9/2020
14
14
Mean
7.7828
3
8/18/2020
<
5
2.5
C.V.
0.6913
3
3/24/2020
28
28
C.V.
0.7878
4
9/14/2020
<
2
1
n
22
4
4/13/2020
16
16
n
58
5
12/7/2020
3
3
5
5/6/2020
7.6
7.6
6
3/15/2021
<
2
1
Mult Factor =
1.37
6
6/8/2020
11
11
Mult Factor =
1.00
7
4/14/2021
<
5
2.5
Max. Value
5.7 dig/L
7
7/7/2020
15
15
Max. Value
39.00 ug/L
8
6/14/2021
<
2
1
Max. Pred Cw
7.8 dig/L
8
8/4/2020
13.5
13.5
Max. Pred Cw
39.00 ug/L
9
9/13/2021
2
2
9
8/18/2020
12
12
10
12/6/2021
5.7
5.7
10
9/4/2020
6.5
6.5
11
3/7/2022
<
2
1
11
9/14/2020
12
12
12
6/6/2022
<
2
1
12
10/5/2020
13
13
13
7/11 /2022
<
5
2.5
13
11 /3/2020
8
8
14
9/12/2022
<
2
1
14
12/3/2020
10
10
15
12/12/2022
<
2
1
15
12/7/2020
10
10
16
3/13/2023
<
2
1
16
1 /11 /2021
6
6
17
6/19/2023
<
2
1
17
2/3/2021
4.4
4.4
18
7/17/2023
<
5
2.5
18
3/15/2021
4.5
4.5
19
9/11 /2023
<
2
1
19
4/14/2021
3
3
20
12/11/2023
<
2
1
20
4/23/2021
3.3
3.3
21
3/11 /2024
<
2
1
21
5/12/2021
3
3
22
6/10/2024
<
2
1
22
6/1 /2021
4
4
23
23
6/14/2021
4.9
4.9
24
24
7/1 /2021
11
11
25
25
8/2/2021
6
6
26
26
9/1 /2021
10
10
27
27
9/13/2021
8
8
28
28
10/4/2021
4.4
4.4
29
29
11 /1 /2021
39
39
30
30
12/1 /2021
8.7
8.7
31
31
12/6/2021
8.5
8.5
32
32
1 /5/2022
6.6
6.6
33
33
2/3/2022
7.3
7.3
34
34
3/1 /2022
10
10
35
35
3/7/2022
5.2
5.2
36
36
4/1 /2022
15
15
37
37
5/17/2022
3
3
38
38
6/1 /2022
3
3
39
39
6/6/2022
4
4
40
40
7/1 /2022
3
3
41
41
7/11 /2022
5
5
42
42
8/3/2022
3
3
43
43
9/1 /2022
4
4
44
44
9/12/2022
4
4
45
45
10/3/2022
5
5
46
46
10/4/2022
4
4
47
47
10/5/2022
6
6
48
48
10/6/2022
5
5
49
49
10/7/2022
5
5
50
50
10/14/2022
5
5
51
51
10/17/2022
5
5
52
52
10/18/2022
5
5
53
53
10/19/2022
4
4
54
54
10/20/2022
4
4
55
55
10/21 /2022
5
5
56
56
10/24/2022
5
5
57
57
10/25/2022
5
5
58
58
10/26/2022
5
5
20591 RPA 6.0 MGD, data
-7- 10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par12
Date Data
1 3/9/2020 <
2 6/8/2020 <
3 8/18/2020 <
4 9/14/2020 <
5 12/7/2020 <
6 3/15/2021 <
7 4/14/2021 <
8 6/14/2021 <
9 9/13/2021 <
10 12/6/2021 <
11 3/7/2022
12 6/6/2022 <
13 7/11 /2022 <
14 9/12/2022 <
15 12/12/2022 <
16 3/13/2023 <
17 6/19/2023 <
18 7/17/2023 <
19 9/11 /2023 <
20 12/11/2023 <
21 3/11 /2024 <
22 6/10/2024 <
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Par13
Use "PASTE SPECIAL-
Use "PASTE SPECIAL -
Cyanide
Values" then "COPY".
Fluoride
Values" then "COPY".
Maximum data points
Maximum data points
= 58
= 58
BDL=1/2DL
Results
Date Data
BDL=1/2DL Results
1 5
Std Dev.
0.0000
1
Std Dev.
NO DATA
5 5
Mean
5.00
2
Mean
NO DATA
5 5
C.V.
0.0000
3
C.V.
NO DATA
5 5
n
22
4
n
0
5 5
5
5 5
Mult Factor =
1.00
6
Mult Factor =
N/A
5 5
Max. Value
5.0 ug/L
7
Max. Value
N/A ug/L
5 5
Max. Pred Cw
5.0 ug/L
8
Max. Pred Cw
N/A ug/L
5 5
9
5 5
10
6 5
11
5 5
12
5 5
13
5 5
14
5 5
15
5 5
16
5 5
17
5 5
18
5 5
19
5 5
20
5 5
21
5 5
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
20591 RPA 6.0 MGD, data
-8- 10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par14
Date
1 3/9/2020 <
2 6/8/2020 <
3 8/18/2020 <
4 9/14/2020 <
5 12/7/2020
6 3/15/2021 <
7 4/14/2021 <
8 6/14/2021 <
9 9/13/2021 <
10 12/6/2021 <
11 3/7/2022 <
12 6/6/2022 <
13 7/11 /2022 <
14 9/12/2022 <
15 12/12/2022 <
16 3/13/2023 <
17 6/19/2023 <
18 7/17/2023 <
19 9/11 /2023 <
20 12/11/2023 <
21 3/11 /2024 <
22 6/10/2024 <
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Par15
Use "PASTE SPECIAL-
Use "PASTE SPECIAL -
Lead
Values" then "COPY".
Mercury
Values" then "COPY".
Maximum data points
Maximum data points
=58
=58
BDL=1/2DL
Results
Date Data
BDL=1/2DL Results
3
1.5
Std Dev.
1.7126
1
Std Dev.
NO DATA
3
1.5
Mean
1.9841
2
Mean
NO DATA
10
5
C.V.
0.8632
3
C.V.
NO DATA
3
1.5
n
22
4
n
0
4.9
4.9
5
2
1
Mult Factor =
1.46
6
Mult Factor =
N/A
10
5
Max. Value
5.000 ug/L
7
Max. Value
N/A ng/L
2
1
Max. Pred Cw
7.300 ug/L
8
Max. Pred Cw
N/A ng/L
2
1
9
2
1
10
2
1
11
0.5
0.25
12
10
5
13
0.5
0.25
14
0.5
0.25
15
3
1.5
16
3
1.5
17
10
5
18
3
1.5
19
3
1.5
20
3
1.5
21
2
1
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
20591 RPA 6.0 MGD, data
-9- 10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par16
Par17 & Par18
Use "PASTE SPECIAL-
Use "PASTE SPECIAL -
Molybdenum
Values" then "COPY".
Nickel
Values" then "COPY".
Maximum data points
Maximum data points
= 58
= 58
Date
Data
BDL=1/2DL
Results
Date
Data
BDL=1/2DL
Results
1
3/9/2020
7
7
Std Dev.
1.3890
1
3/9/2020
5
5
Std Dev.
2.0068
2
6/8/2020
5
5
Mean
2.9278
2
6/8/2020
5
5
Mean
4.5023
3
9/14/2020
3
3
C.V.
0.4744
3
8/18/2020
10
10
C.V.
0.4457
4
12/7/2020
<
2
1
n
18
4
9/14/2020
7.2
7.2
n
22
5
3/15/2021
<
5
2.5
5
12/7/2020
5.8
5.8
6
6/14/2021
<
5
2.5
Mult Factor =
1.32
6
3/15/2021
3.7
3.7
Mult Factor =
1.24
7
9/13/2021
<
5
2.5
Max. Value
7.0 ug/L
7
4/14/2021
<
10
5
Max. Value
10.0 Ng/L
8
12/6/2021
2.2
2.2
Max. Pred Cw
9.2 ug/L
8
6/14/2021
7.7
7.7
Max. Pred Cw
12.4 Ng/L
9
3/7/2022
3
3
9
9/13/2021
<
10
5
10
6/6/2022
4
4
10
12/6/2021
3.7
3.7
11
9/12/2022
4
4
11
3/7/2022
3.2
3.2
12
12/12/2022
<
2
1
12
6/6/2022
4
4
13
3/13/2023
<
5
2.5
13
7/11 /2022
<
10
5
14
6/19/2023
<
5
2.5
14
9/12/2022
4
4
15
9/11 /2023
<
5
2.5
15
12/12/2022
2
2
16
12/11 /2023
<
5
2.5
16
3/13/2023
2.21
2.21
17
3/11 /2024
<
5
2.5
17
6/19/2023
4.47
4.47
18
6/10/2024
<
5
2.5
18
7/17/2023
<
10
5
19
19
9/11 /2023
4.29
4.29
20
20
12/11 /2023
3.65
3.65
21
21
3/11 /2024
<
2
1
22
22
6/10/2024
2.13
2.13
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
20591 RPA 6.0 MGD, data
-10- 10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par19
Par20
Use "PASTE SPECIAL-
Use "PASTE SPECIAL -
Selenium
Values" then "COPY".
Silver
Values" then "COPY".
Maximum data points
Maximum data points
= 58
= 58
Date
Data
BDL=1/2DL
Results
Date
Data
BDL=1/2DL
Results
1
3/9/2020
<
1
0.5
Std Dev.
2.5436
1
3/9/2020
<
0.5
0.25
Std Dev.
0.8803
2
6/8/2020
<
1
0.5
Mean
1.7727
2
6/8/2020
<
0.5
0.25
Mean
0.6818
3
8/18/2020
<
10
5
C.V.
1.4348
3
8/18/2020
<
5
2.5
C.V.
1.2911
4
9/14/2020
<
1
0.5
n
22
4
9/14/2020
<
0.5
0.25
n
22
5
12/7/2020
<
1
0.5
5
12/7/2020
<
1
0.5
6
3/15/2021
<
1
0.5
Mult Factor =
1.71
6
3/15/2021
<
1
0.5
Mult Factor =
1.65
7
4/14/2021
<
10
5
Max. Value
10.0 ug/L
7
4/14/2021
<
5
2.5
Max. Value
2.500 ug/L
8
6/14/2021
<
1
0.5
Max. Pred Cw
17.1 ug/L
8
6/14/2021
<
0.5
0.25
Max. Pred Cw
4.125 ug/L
9
9/13/2021
<
1
0.5
9
9/13/2021
<
0.5
0.25
10
12/6/2021
<
1
0.5
10
12/6/2021
<
0.5
0.25
11
3/7/2022
<
1
0.5
11
3/7/2022
<
0.5
0.25
12
6/6/2022
<
1
0.5
12
6/6/2022
<
0.5
0.25
13
7/11 /2022
<
10
5
13
7/11 /2022
<
5
2.5
14
9/12/2022
<
1
0.5
14
9/12/2022
<
0.5
0.25
15
12/12/2022
<
1
0.5
15
12/12/2022
<
0.5
0.25
16
3/13/2023
<
1
0.5
16
3/13/2023
<
0.5
0.25
17
6/19/2023
<
1
0.5
17
6/19/2023
<
0.5
0.25
18
7/17/2023
<
10
5
18
7/17/2023
<
5
2.5
19
9/11 /2023
<
1
0.5
19
9/11 /2023
<
0.5
0.25
20
12/11 /2023
1
1
20
12/11 /2023
<
0.5
0.25
21
3/11 /2024
10
10
21
3/11 /2024
<
0.5
0.25
22
6/10/2024
<
1
0.5
22
6/10/2024
<
0.5
0.25
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
20591 RPA 6.0 MGD, data
- 11 - 10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par21
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Date
3/9/2020
6/8/2020
8/18/2020
9/14/2020
12/7/2020
3/15/2021
4/14/2021
6/14/2021
9/13/2021
12/6/2021
3/7/2022
6/6/2022
7/11 /2022
9/12/2022
12/12/2022
3/13/2023
6/19/2023
7/17/2023
9/11 /2023
12/11 /2023
3/11 /2024
6/10/2024
Data
Use "PASTE SPECIAL -
Zinc Values" then "COPY" .
Maximum data points
= 58 Par22
BDL=1/2DL
82
82
35
35
35
35
40
40
68
68
58
58
78
78
70
70
51
51
30
30
36
36
80
80
40
40
53
53
42
42
50
50
20
20
48
48
30
30
37
37
23
23
36
36
Results
Std Dev
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
18.3369
47.3636
0.3872
22
1.21
82.0 ug/L
99.2 ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Bis(2-ethylhexyl) phthalate
Date Data
1 /17/2020 <
1 /24/2020 <
2/10/2020 <
3/9/2020 <
4/14/2020 <
5/12/2020 <
6/8/2020 <
7/14/2020 <
8/5/2020 <
8/18/2020 <
9/14/2020
10/13/2020 <
11 /9/2020 <
12/7/2020 <
1 /11 /2021 <
2/8/2021
3/9/2021 <
4/12/2021 <
4/14/2021 <
5/10/2021 <
6/7/2021 <
7/13/2021 <
8/9/2021 <
9/15/2021 <
10/12/2021 <
11 /9/2021 <
12/6/2021 <
1 /25/2022 <
2/14/2022 <
3/7/2022 <
4/5/2022 <
5/10/2022 <
6/7/2022 <
7/11/2022 <
8/9/2022 <
9/20/2022 <
10/11 /2022 <
11 /14/2022 <
12/5/2022 <
1 /23/2023 <
2/13/2023 <
3/13/2023 <
4/17/2023 <
5/8/2023 <
6/19/2023 <
7/17/2023 <
8/14/2023 <
9/11 /2023 <
10/9/2023 <
11 /27/2023 <
12/11 /2023 <
1 /8/2024 <
2/5/2024 <
3/11 /2024 <
4/8/2024 <
5/7/2024 <
6/10/2024 <
7/15/2024 <
BDL=1/2DL
5 2.5
10 5
5 2.5
10 5
10 5
10 5
10 5
10 5
5 2.5
10 5
7.42 7.42
5 2.5
5 2.5
5 2.5
5 2.5
10.1 10.1
5 2.5
5 2.5
10 5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
10 5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
Results
Std Dev
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL -
Values" then "COPY".
Maximum data points
= 58
1.4331
3.1038
0.4617
58
1.00
10.100000 pg/L
10.100000 pg/L
-12-
20591 RPA 6.0 MGD, data
10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par23
Date Data
1 4/15/2021
2 7/12/2022
3 7/19/2023
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Chloroform
BDL=1/2DL Results
1.18 1.18 Std Dev.
3.08 3.08 Mean
2.55 2.55 C.V. (default)
n
Mult Factor =
Max. Value
Max. Pred Cw
Par24
Use "PASTE SPECIAL -
Values" then "COPY".
Maximum data points
= 58
Dichlorobromomethane
Date Data
0.9805
1 4/15/2021 <
2.2700
2 7/12/2022
0.6000
3 7/19/2023
3
4
5
3.00
6
3.080000 dig/L
7
9.240000 dig/L
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
BDL=1/2DL Results
1 0.5 Std Dev.
1.31 1.31 Mean
1.08 1.08 C.V. (default)
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL -
Values" then "COPY".
Maximum data points
= 58
0.4174
0.9633
0.6000
3
3.00
1.310000 pg/L
3.930000 pg/L
-13-
20591 RPA 6.0 MGD, data
10/2/2024

REASONABLE POTENTIAL ANALYSIS
Par25
Use "PASTE SPECIAL -
Toluene
Values" then "COPY".
Maximum data points
= 58
Date Data
BDL=1/2DL
Results
1
4/15/2021
6.2 6.2
Std Dev.
3.2909
2
7/12/2022 <
1 0.5
Mean
2.4000
3
7/19/2023 <
1 0.5
C.V. (default)
0.6000
4
n
3
5
6
Mult Factor =
3.00
7
Max. Value
6.200000 pg/L
8
Max. Pred Cw
18.600000 pg/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
20591 RPA 6.0 MGD, data
- 14 - 10/2/2024

Statesville - Third Creek WWTP >
NCOO21O24 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw (MGD) =
6.0000
WWTP/WTP Class: Grade IV
1Q10S (cfs) =
10.93
IWC% @ 1Q10S = 45.97132971
7Q10S (cfs) =
13.20
IWC% @ 7QIOS = 41.33333333
7QIOW (cfs) =
17.00
IWC% @ 7Q10W - 35.36121673
30Q2 (cfs) =
21.00
IWC% @ 30Q2 = 30.69306931
Avg. Stream Flow, QA (cfs) =
56.00
IW%C @ QA = 14.24196018
Receiving Stream: Third Creek HUC 03040102
Stream Class: C
Outfall 001
Qw = 6 MGD
COMBINED HARDNESS (mg/L)
Acute = 25 mg/L
Chronic = 25 mg/L
PARAMETER
NC STANDARDS OR EPA CRITERIA
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
J
CY
D
Applied
Chronic Acute
n # Det. Max Pred Cw Allowable Cw
Standard
Acute (FW): 739.6
Arsenic
C
150 FW(7Q10s) 340
ug/L
22 1
7.1
Chronic (FW):----362.9 --
-------------------------------
N_o value_> Allowable-Cw
Arsenic
C
10 HH/WS(Qavg)
ug/L
-_ _
Chronic (HH): 70.2
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
Acute: 141.39
Beryllium
NC
6.5 FW(7Q10s) 65
ug/L
3 0
7.50
Note: n < 9
C.V. (default)
Chronic: 15.73
Limited data set
NO DETECTS
Max MDL = 5
Acute: 7.047
Cadmium
NC
0.5899 FW(7Q10s) 3.2396
ug/L
22 0
1.490
--Chronic:-----1.427 --
-------------------------------
No detects
NO DETECTS
Max MDL = 2
Acute: NO WQS
Chlorides
NC
230 FW(7QIOs)
mg/L
0 0
N/A
--Chronic:-----556.5 --
-------------------------------
Acute: NO WQS
Chlorinated Phenolic Compounds
NC
1 A(30Q2)
ug/L
0 0
N/A
--Chronic:------3.3---
-------------------------------
Acute: NO WQS
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
3 1
36.0
Note: n < 9
C.V. (default)
Chronic: 977.4
No RP for limited dataset (n<8 samples) - no
Limited data set
No value > Allowable Cw
monitoring required
Acute: 1,968.8
Chromium III
NC
117.7325 FW(7QIOs) 905.0818
µg/L
0 0
N/A
--Chronic:-----284.8 --
-------------------------------
Acute: 34.8
Chromium VI
NC
11 FW(7Q10s) 16
µg/L
0 0
N/A
--Chronic:-----26.6 --
-------------------------------
Tot Cr value(s) > 5 but < Cr VI Allowable Cw
Chromium, Total
NC
µg/L
22 3 7.8 Max reported value = 5.7
a: No monitoring required if all Total Chromium
samples are < 5 pg/L or Pred. max for Total Cr is <
allowable Cw for Cr VI.
Page 15 of 16
20591 RPA 6.0 MGD, rpa
10/2/2024

Statesville - Third Creek WWTP
Outfall 001
NCO021024
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
Qw = 6 MGD
Acute: 22.78
Copper
NC
7.8806 FW(7Q10s) 10.4720
ug/L
58 57
39.00
Chronic: 19.07
No RP, Predicted Max >_ 50% of Allowable Cw -
2 value(s) > Allowable Cw
apply Quarterly Monitoring
Acute: 47.9
Cyanide
NC
5 FW(7Q10s) 22
10
ug/L
22 1
5.0
Chronic: 12.1
_
No RP Predicted Max >_ 50% of Allowable Cw -
No value > Allowable Cw
apply Quarterly Monitoring
Acute: NO WQS
Fluoride
NC
1800 FW(7Q10s)
ug/L
0 0
N/A
--Chronic: ---- 4,354.8--
-------------------------------
Acute: 164.205
Lead
NC
2.9416 FW(7Q10s) 75.4871
ug/L
22 1
7.300
Chronic: 7.117
RP based on four nondetects at < 10 ug/L. Apply
No value > Allowable Cw
quarterly monitoring, report to PQL of < 2 ug/L
Acute: NO WQS
Mercury
NC
12 FW(7Q10s)
0.5
ng/L
0 0
N/A
--Chronic: ----- --
-------------------------------
29.0
Acute: NO WQS
Molybdenum
NC
2000 HH(7Q l Os)
ug/L
18 7
9.2
Chronic: 4,838.7
_
No RP Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
Acute (FW): 729.2
Nickel
NC
37.2313 FW(7Q10s) 335.2087
µg/L
22 17
12.4
Chronic (FW): 90.1
_
No RP Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
Nickel
NC
25.0000 WS(7Q10s)
µg/L
Chronic (WS): 60.5
No value > Allowable Cw
Acute: 121.8
Selenium
NC
3.1 FW(7Q10s) 56
ug/L
22 2
17.1
Chronic: 7.5
RP based on one high detect; awaiting confirmation
1 value(s) > Allowable Cw
by ORC
Acute: 0.645
Silver
NC
0.06 FW(7Q10s) 0.2964
ug/L
22 0
4.125
--Chronic:-----0.145 --
-------------------------------
RP based on nondetects at < 0.5, < 1 and < 5 ug/L.
NO DETECTS
Max MDL = 5
Acute: 273.4
Zinc
NC
126.7335 FW(7Q10s) 125.7052
ug/L
22 22
99.2
Chronic: 306.6
_
No RP Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
Acute: NO WQS
Bis(2-ethylhexyl) phthalate
C
0.37 HH(Qavg)
µg/L
58 2
10.10000
--Chronic: ---- -
-------------------------------
2.59796
RP shown - apply Monthly Monitoring with Limit
11 value(s) > Allowable Cw
Acute: NO WQS
Chloroform
NC
2000 HH(7Q10s)
µg/L
3 3
9.24000
Note: n < 9
C.V. (default)
Chronic: 4838.70968
No RP for limited dataset (n<8 samples) - no
Limited data set
No value > Allowable Cw
monitoring required
Acute: NO WQS
Dichlorobromomethane
C
27 HH(Qavg)
µg/L
3 2
3.93000
Note: n < 9
C.V. (default)
Chronic: 189.58065
No RP for limited dataset (n<8 samples) - no
Limited data set
No value > Allowable Cw
monitoring required
Acute: NO WQS
Toluene
NC
11 FW(7Q1Os)
µg/L
3 1
18.60000
Note: n < 9
C.V. (default)
Chronic: 26.61290
No RP for limited dataset (n<8 samples) - no
Limited data set
No value > Allowable Cw
monitoring required
20591 RPA 6.0 MGD, rpa
Page 16 of 16 10/2/2024

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
m REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW WQS
Facility Name
WWTP/WTP Class
NPDES Permit
Outfal I
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
Statesville - Third Creek WWTP
Grade IV
NCO021024
001
8.000
Third Creek
03040102
C
❑ Apply WS Hardness WQC
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1 Q10s (cfs)
Effluent Hardness
Upstream Hardness
Combined Hardness Chronic
Combined Hardness Acute
Data Source(s)
13.20
17.00
21.00
56.00
10.93
36.84 mg/L (Avg)
11.48 mg/L (Avg)
_ _ _ _ _ _ _ _ 25 mg/L
25 mg/L
Permittee-submitted DMRs and PPAs; upstream
hardness data provided by the Permittee on request.
❑ CHECK TO APPLY MODEL
Follow directions for data entry. In some cases a
Par01
Par02
Par03
Par04
Par05
Par06 E
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Par23
Par24
Par25
Table 2. Parameters of Concern
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
0.5899
FW
3.2396
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
117.7325
FW
905.0818
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
7.8806
FW
10.4720
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
2.9416
FW
75.4871
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
ng/L
Molybdenum
Human Health
NC
2000
HH
ug/L
Nickel
Aquatic Life
NC
37.2313
FW
335.2087
pg/L
Nickel
Water Supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
3.1
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
0.2964
ug/L
Zinc
Aquatic Life
NC
126.7335
FW
125.7052
ug/L
Bis(2-ethylhexyl) phthalate
Human Health
C
0.37
HH
pg/L
Chloroform
Human Health
NC
2000
HH
pg/L
Dichlorobromomethane
Human Health
C
27
HH
pg/L
Toluene
Aquatic Life
NC
11
FW
pg/L
20591 RPA 8.0 MGD, input
10/2/2024

Statesville - Third Creek WWTP >
NCOO21O24 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw (MGD) =
8.0000
WWTP/WTP Class: Grade IV
1Q10S (cfs) =
10.93
IWC% @ 1Q10S = 53.15045006
7Q10S (cfs) =
13.20
IWC% @ 7QIOS = 48.4375
7QIOW (cfs) =
17.00
IWC% @ 7Q10W - 42.17687075
30Q2 (cfs) =
21.00
IWC% @ 30Q2 = 37.1257485
Avg. Stream Flow, QA (cfs) =
56.00
IW%C @ QA = 18.12865497
Receiving Stream: Third Creek HUC 03040102
Stream Class: C
Outfall 001
Qw = 8 MGD
COMBINED HARDNESS (mg/L)
Acute = 25 mg/L
Chronic = 25 mg/L
PARAMETER
NC STANDARDS OR EPA CRITERIA
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
J
CY
D
Applied
Chronic Acute
n # Det. Max Pred Cw Allowable Cw
Standard
Acute (FW): 639.7
Arsenic
C
150 FW(7Q10s) 340
ug/L
22 1
7.1
Chronic (FW):----309.7 --
-------------------------------
N_o value_> Allowable-Cw
Arsenic
C
10 HH/WS(Qavg)
ug/L
-_ _
Chronic (HH): 55.2
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
Acute: 122.29
Beryllium
NC
6.5 FW(7Q10s) 65
ug/L
3 0
7.50
Note: n < 9
C.V. (default)
Chronic: 13.42
No detects of limited dataset (n < 8 samples)
Limited data set
NO DETECTS
Max MDL = 5
Acute: 6.095
Cadmium
NC
0.5899 FW(7Q 10s) 3.2396
ug/L
22 0
1.490
Chronic: 1.218
No detects at < 2 ug/L and below.
NO DETECTS
Max MDL = 2
Acute: NO WQS
Chlorides
NC
230 FW(7QIOs)
mg/L
0 0
N/A
--Chronic:-----474.8 --
-------------------------------
Acute: NO WQS
Chlorinated Phenolic Compounds
NC
1 A(30Q2)
ug/L
0 0
N/A
--Chronic:------2.7---
-------------------------------
Acute: NO WQS
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
3 1
36.0
Note: n < 9
C.V. (default)
Chronic: 808.1
No RP for limited dataset (n<8 samples) - no
Limited data set
No value > Allowable Cw
monitoring required
Acute: 1,702.9
Chromium III
NC
117.7325 FW(7Q10s) 905.0818
µg/L
0 0
N/A
--Chronic:-----243.1 --
-------------------------------
Acute: 30.1
Chromium VI
NC
11 FW(7Q10s) 16
µg/L
0 0
N/A
--Chronic:-----22.7 --
-------------------------------
Tot Cr value(s) > 5 but < Cr VI Allowable Cw
Chromium, Total
NC
µg/L
22 3 7.8 Max reported value = 5.7
a: No monitoring required if all Total Chromium
samples are < 5 pg/L or Pred. max for Total Cr is <
allowable Cw for Cr VI.
Page 2 of 3
20591 RPA 8.0 MGD, rpa
10/2/2024

Statesville - Third Creek WWTP
Outfall 001
NCO021024
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
Qw = 8 MGD
Acute: 19.70
Copper
NC
7.8806 FW(7Q10s) 10.4720
ug/L
58 57
39.00
Chronic: 16.27
No RP, Predicted Max >_ 50% of Allowable Cw -
2 value(s) > Allowable Cw
apply Quarterly Monitoring
Acute: 41.4
Cyanide
NC
5 FW(7Q10s) 22
10
ug/L
22 1
5.0
Chronic: 10.3
_
No RP Predicted Max >_ 50% of Allowable Cw -
No value > Allowable Cw
apply Quarterly Monitoring
Acute: NO WQS
Fluoride
NC
1800 FW(7Q10s)
ug/L
0 0
N/A
--Chronic: ---- 3,716.1--
-------------------------------
Acute: 142.025
Lead
NC
2.9416 FW(7Q10s) 75.4871
ug/L
22 1
7.300
Chronic: 6.073
RP based on four nondetects at < 10 ug/L. Apply
No value > Allowable Cw
quarterly monitoring, report to PQL of < 2 ug/L
Acute: NO WQS
Mercury
NC
12 FW(7Q10s)
0.5
ng/L
0 0
N/A
--Chronic: ----- --
-------------------------------
24.8
Acute: NO WQS
Molybdenum
NC
2000 HH(7Q l Os)
ug/L
18 7
9.2
Chronic: 4,129.0
_
No RP Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
Acute (FW): 630.7
Nickel
NC
37.2313 FW(7Q10s) 335.2087
µg/L
22 17
12.4
Chronic (FW): 76.9
_
No RP Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
Nickel
NC
25.0000 WS(7Q10s)
µg/L
Chronic (WS): 51.6
No value > Allowable Cw
Acute: 105.4
Selenium
NC
3.1 FW(7Q10s) 56
ug/L
22 2
17.1
Chronic: 6.4
RP based on one high detect; awaiting confirmation
1 value(s) > Allowable Cw
by ORC
Acute: 0.558
Silver
NC
0.06 FW(7Q10s) 0.2964
ug/L
22 0
4.125
--Chronic:-----0.124 --
-------------------------------
RP based on nondetects at < 0.5, < 1 and < 5 ug/L.
NO DETECTS
Max MDL = 5
Acute: 236.5
Zinc
NC
126.7335 FW(7Q10s) 125.7052
ug/L
22 22
99.2
Chronic: 261.6
_
No RP Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
Acute: NO WQS
Bis(2-ethylhexyl) phthalate
C
0.37 HH(Qavg)
µg/L
58 2
10.10000
--Chronic: ---- -
-------------------------------
2.04097
RP shown - apply Monthly Monitoring with Limit
58 value(s) > Allowable Cw
Acute: NO WQS
Chloroform
NC
2000 HH(7Q10s)
µg/L
3 3
9.24000
Note: n < 9
C.V. (default)
Chronic: 4129.03226
No RP for limited dataset (n<8 samples) - no
Limited data set
No value > Allowable Cw
monitoring required
Acute: NO WQS
Dichlorobromomethane
C
27 HH(Qavg)
µg/L
3 2
3.93000
Note: n < 9
C.V. (default)
Chronic: 148.93548
No RP for limited dataset (n<8 samples) - no
Limited data set
No value > Allowable Cw
monitoring required
Acute: NO WQS
Toluene
NC
11 FW(7Q1Os)
µg/L
3 1
18.60000
Note: n < 9
C.V. (default)
Chronic: 22.70968
No RP for limited dataset (n<8 samples) - no
Limited data set
No value > Allowable Cw
monitoring required
20591 RPA 8.0 MGD, rpa
Page 3 of 3 10/2/2024

FACILITY: Statesville - Third Creek WWTP Outfal[ 001
NPDES PERMIT: NCO021024 Dissolved to Total Metal Calculator
In accordance with Federal Regulations, permit limitations must be written as Total Metals per 40 CFR 122.45(c)
PARAMETER
Cadmium (d)
Cd -Trout strez
Chromium III (d)(I
Chromium VI (d)
Chromium, Total
Copper (d)(h)
Lead (d)(h)
Nickel (d)(h)
Ni - WS streams
Silver (d)(h,acute'
Zinc (d)(h)
Beryllium
Arsenic (d) _
Receiving
Receiving
Rec. Stream
NPDES
Total Suspended
Combined
Combined
Instream Instream
Effluent
Stream
Stream
Solids
Hardness
Hardness
Wastewater Wastewater
Upstream
Hardness
summer
summer 7Q10
1410
Flow Limit
-Fixed Value-
chronic
Acute
Concentration Concentration
Hardness
Average
7Q10 (CFS)
(MGD)
[MGD]
[MGD]
mg/L)
(mg/L)
(mg/L)
(Chronic) (Acute)
Average (mg/L)
(mg/L)
13.2000
8.5161
7.0516
6.0000
10
25.000
25.000
41.3333 45.9713
11.482
36.8441
Upstream Hard Avg (mg/L) = 11.482
EFF Hard Avg (mg/L) = 36.8441
Dissolved
after applying
e
Metals Criteria
hardness
nation
Acute
fug/I
US EPA
Translators- using
Default Partition
Coefficients
streams
Total Metal Criteria Total Metal =
Dissolved Metal =Translator
COMMENTS (identify parameters to PERCS Branch to maintain in facility's LTMP/STMP):
Chronic
Chronic
Acute
u /I
u /I
u /I
0.15
0.82
0.252
0.59
3.24
0.15
0.51
0.252
0.59
2.01
24
183
0.202
117.73
905.08
11
16
1.000
11.00
16.00
N/A
N/A
2.7
3.6
0.348
7.88
10.47
0.54
14
0.184
2.94
75.49
16
1451
0.432
37.23
335.21
25 N/A
0.06
0.301
1.0001
0.061 0.30
36
361
0.2881
126.73 125.71
1.0001
96.5165
1.0001
1501
340
(d) = dissolved metal standard. See 15A NCAC 02B .0211 for more information.
(h) = hardness -dependent dissolved metal standard. See 15A NCAC 02B .0211 for more information.
(t) = based upon measurement of total recoveable metal. See 15A NCAC 02B .0211 for more information.
The Human Health standard for Nickel in Water Supply Streams is 25 mg/L which is Total Recoverable metal standard.
The Human Health standard for Arsenic is 10 µg/L which is Total Recoverable metal standard.

FACILITY: Statesville - Third Creek WWTP Outfal[ 001
NPDES PERMIT: NCO021024 Dissolved to Total Metal Calculator
In accordance with Federal Regulations, permit limitations must be written as Total Metals per 40 CFR 122.45(c)
PARAMETER
Cadmium (d)
Cd -Trout strez
Chromium III (d)(I
Chromium VI (d)
Chromium, Total
Copper (d)(h)
Lead (d)(h)
Nickel (d)(h)
Ni - WS streams
Silver (d)(h,acute'
Zinc (d)(h)
Beryllium
Arsenic (d) _
Receiving
Receiving
Rec. Stream
NPDES
Total Suspended
Combined
Instream Instream
Effluent
Stream
Stream
Solids
Hardness
Upstream
Wastewater Wastewater
Hardness
summer
summer 7Q10
1410
Flow Limit
-Fixed Value-
chronic
TAcute
Hardness
Concentration Concentration
Average
7Q10 (CFS)
(MGD)
[MGD]
[MGD]
mg/L)
(mg/L)
(Chronic) (Acute) Average (mg/L)
(mg/L)
13.2000
8.5161
7.0516
8.0000
10
25.000
EERAL
48.4375 53.1505 11.482
36.8441
Upstream Hard Avg (mg/L) = 11.482
EFF Hard Avg (mg/L) = 36.8441
Dissolved
after applying
e
Metals Criteria
hardness
nation
Acute
fug/I
US EPA
Translators- using
Default Partition
Coefficients
streams
Total Metal Criteria Total Metal =
Dissolved Metal =Translator
COMMENTS (identify parameters to PERCS Branch to maintain in facility's LTMP/STMP):
Chronic
Chronic
Acute
u /I
u /I
u /I
0.15
0.82
0.252
0.59
3.24
0.15
0.51
0.252
0.59
2.01
24
183
0.202
117.73
905.08
11
16
1.000
11.00
16.00
N/A
N/A
2.7
3.6
0.348
7.88
10.47
0.54
14
0.184
2.94
75.49
16
1451
0.432
37.23
335.21
25 N/A
0.06
0.301
1.0001
0.061 0.30
36
361
0.2881
126.73 125.71
1.0001
96.5165
1.0001
1501
340
(d) = dissolved metal standard. See 15A NCAC 02B .0211 for more information.
(h) = hardness -dependent dissolved metal standard. See 15A NCAC 02B .0211 for more information.
(t) = based upon measurement of total recoveable metal. See 15A NCAC 02B .0211 for more information.
The Human Health standard for Nickel in Water Supply Streams is 25 mg/L which is Total Recoverable metal standard.
The Human Health standard for Arsenic is 10 µg/L which is Total Recoverable metal standard.

Permit No. NC0020591
NPDES Implementation of Instream Dissolved Metals Standards - Freshwater Standards
The NC 2007-2015 Water Quality Standard (WQS) Triennial Review was approved by the NC
Environmental Management Commission (EMC) on November 13, 2014. The US EPA subsequently
approved the WQS revisions on April 6, 2016, with some exceptions. Therefore, metal limits in draft
permits out to public notice after April 6, 2016 must be calculated to protect the new standards - as
approved.
Table 1. NC Dissolved Metals Water Q ality Standards/A uatic Life Protection
Parameter
Acute FW, µg/1
(Dissolved)
Chronic FW, µg/l
(Dissolved)
Acute SW, µg/l
(Dissolved)
Chronic SW, µg/l
(Dissolved)
Arsenic
340
150
69
36
Beryllium
65
6.5
---
---
Cadmium
Calculation
Calculation
40
8.8
Chromium III
Calculation
Calculation
---
---
Chromium VI
16
11
1100
50
Copper
Calculation
Calculation
4.8
3.1
Lead
Calculation
Calculation
210
8.1
Nickel
Calculation
Calculation
74
8.2
Silver
Calculation
0.06
1.9
0.1
Zinc
Calculation
Calculation
90
81
Table 1 Notes:
1. FW= Freshwater, SW= Saltwater
2. Calculation = Hardness dependent standard
3. Only the aquatic life standards listed above are expressed in dissolved form. Aquatic life
standards for Mercury and selenium are still expressed as Total Recoverable Metals due to
bioaccumulative concerns (as are all human health standards for all metals). It is still necessary
to evaluate total recoverable aquatic life and human health standards listed in 15A NCAC
213.0200 (e.g., arsenic at 10 µg/l for human health protection; cyanide at 5 µg/L and fluoride at
1.8 mg/L for aquatic life protection).
Table 2. Dissolved Freshwater Standards for Hardness -Dependent Metals
The Water Effects Ratio (WER) is equal to one unless determined otherwise under 15A
NCAC 02B .0211 Subparagraph (11)(d)
Metal
NC Dissolved Standard, µg/I
Cadmium, Acute
WER*{1.136672-[ln hardness](0.041838)} e^{0.9151 [In hardness]-3.1485{
Cadmium, Acute Trout waters
WER*{1.136672-[ln hardness](0.041838)} e^{0.9151[In hardness]-3.6236}
Cadmium, Chronic
WER*{1.101672-[ln hardness](0.041838)} e^{0.7998[ln hardness]-4.4451}
Chromium III, Acute
WER*0.316 e^{0.8190[ln hardness]+3.7256}
Chromium III, Chronic
WER*0.860 e^{0.8190[ln hardness]+0.6848}
Copper, Acute
WER*0.960 e^{0.9422[ln hardness]-1.700}
Copper, Chronic
WER*0.960 e^{0.8545[ln hardness]-1.702}
Lead, Acute
WER*{1.46203-[ln hardness](0.145712)} • e^{1.273[ln hardness]-1.4601
Lead, Chronic
WER*{1.46203-[ln hardness](0.145712)} • ell {1.273[ln hardness]-4.705}
Nickel, Acute
WER*0.998 e^{0.8460[ln hardness]+2.255}
Nickel, Chronic
WER*0.997 e^{0.8460[ln hardness]+0.0584}
Page 1 of 4

Permit No. NCO020591
Silver, Acute
WER*0.85 • e^{1.72[ln hardness]-6.59)
Silver, Chronic
Not applicable
Zinc, Acute
WER*0.978 e^{0.8473[ln hardness]+0.884)
Zinc, Chronic
WER*0.986 e^{0.8473[ln hardness]+0.884)
General Information on the Reasonable Potential Analysis (RPA)
The RPA process itself did not change as the result of the new metals standards. However, application of
the dissolved and hardness -dependent standards requires additional consideration in order to establish the
numeric standard for each metal of concern of each individual discharge.
The hardness -based standards require some knowledge of the effluent and instream (upstream) hardness
and so must be calculated case -by -case for each discharge.
Metals limits must be expressed as `total recoverable' metals in accordance with 40 CFR 122.45(c). The
discharge -specific standards must be converted to the equivalent total values for use in the RPA
calculations. We will generally rely on default translator values developed for each metal (more on that
below), but it is also possible to consider case -specific translators developed in accordance with
established methodology.
RPA Permitting Guidance/WQBELs for Hardness -Dependent Metals - Freshwater
The RPA is designed to predict the maximum likely effluent concentrations for each metal of concern,
based on recent effluent data, and calculate the allowable effluent concentrations, based on applicable
standards and the critical low -flow values for the receiving stream.
If the maximum predicted value is greater than the maximum allowed value (chronic or acute), the
discharge has reasonable potential to exceed the standard, which warrants a permit limit in most cases. If
monitoring for a particular pollutant indicates that the pollutant is not present (i.e. consistently below
detection level), then the Division may remove the monitoring requirement in the reissued permit.
To perform a RPA on the Freshwater hardness -dependent metals the Permit Writer compiles the
following information:
• Critical low flow of the receiving stream, 7Q 10 (the spreadsheet automatically calculates
the 1 Q 10 using the formula 1 Q 10 = 0.843 (s7Q 10, cfs) 0.993
• Effluent hardness and upstream hardness, site -specific data is preferred
• Permitted flow
• Receiving stream classification
2. In order to establish the numeric standard for each hardness -dependent metal of concern and for
each individual discharge, the Permit Writer must first determine what effluent and instream
(upstream) hardness values to use in the equations.
The permit writer reviews DMR's, Effluent Pollutant Scans, and Toxicity Test results for any
hardness data and contacts the Permittee to see if any additional data is available for instream
hardness values, upstream of the discharge.
If no hardness data is available, the permit writer may choose to do an initial evaluation using a
default hardness of 25 mg/L (CaCO3 or (Ca + Mg)). Minimum and maximum limits on the
hardness value used for water quality calculations are 25 mg/L and 400 mg/L, respectively.
If the use of a default hardness value results in a hardness -dependent metal showing reasonable
potential, the permit writer contacts the Permittee and requests 5 site -specific effluent and
upstream hardness samples over a period of one week. The RPA is rerun using the new data.
Page 2 of 4

Permit No. NCO020591
The overall hardness value used in the water quality calculations is calculated as follows:
Combined Hardness (chronic)
_ (Permitted Flow, cfs *Avg. Effluent Hardness, mg/L) + (s7Q 10, cfs *Avg. Upstream Hardness, mg/L)
(Permitted Flow, cfs + s7Q 10, cfs)
The Combined Hardness for acute is the same but the calculation uses the IQ 10 flow.
3. The permit writer converts the numeric standard for each metal of concern to a total recoverable
metal, using the EPA Default Partition Coefficients (DPCs) or site -specific translators, if any
have been developed using federally approved methodology.
EPA default partition coefficients or the "Fraction Dissolved" converts the value for
dissolved metal at laboratory conditions to total recoverable metal at in -stream
ambient conditions. This factor is calculated using the linear partition coefficients
found in The Metals Translator: Guidance for Calculating a Total Recoverable
Permit Limit from a Dissolved Criterion (EPA 823-B-96-007, June 1996) and the
equation:
Cdiss = 1
Ctotal 1 + { [Kpo] [ss(I+a)] [10-6] }
Where:
ss = in -stream suspended solids concentration [mg/1], minimum of 10 mg/L used,
and
Kpo and a = constants that express the equilibrium relationship between dissolved
and adsorbed forms of metals. A list of constants used for each hardness -dependent
metal can also be found in the RPA program under a sheet labeled DPCs.
4. The numeric standard for each metal of concern is divided by the default partition coefficient (or
site -specific translator) to obtain a Total Recoverable Metal at ambient conditions.
In some cases, where an EPA default partition coefficient translator does not exist (ie. silver), the
dissolved numeric standard for each metal of concern is divided by the EPA conversion factor to
obtain a Total Recoverable Metal at ambient conditions. This method presumes that the metal is
dissolved to the same extent as it was during EPA's criteria development for metals. For more
information on conversion factors see the June, 1996 EPA Translator Guidance Document.
5. The RPA spreadsheet uses a mass balance equation to determine the total allowable concentration
(permit limits) for each pollutant using the following equation:
Ca = (s7Q 10 + Qw) (Cwgs)-(s7Q10) (Cb)
Qw
Where: Ca = allowable effluent concentration (µg/L or mg/L)
Cwqs = NC Water Quality Standard or federal criteria (µg/L or mg/L)
Cb = background concentration: assume zero for all toxicants except NH3* (µg/L or mg/L)
Qw = permitted effluent flow (cfs, match s7Q 10)
s7Q 10 = summer low flow used to protect aquatic life from chronic toxicity and human
health through the consumption of water, fish, and shellfish from noncarcinogens (cfs)
* Discussions are on -going with EPA on how best to address background concentrations
Flows other than s7Q 10 may be incorporated as applicable:
IQ 10 = used in the equation to protect aquatic life from acute toxicity
Page 3 of 4

Permit No. NC0020591
QA = used in the equation to protect human health through the consumption of water,
fish, and shellfish from carcinogens
30Q2 = used in the equation to protect aesthetic quality
6. The permit writer enters the most recent 2-3 years of effluent data for each pollutant of concern.
Data entered must have been taken within four and one-half years prior to the date of the permit
application (40 CFR 122.21). The RPA spreadsheet estimates the 95th percentile upper
concentration of each pollutant. The Predicted Max concentrations are compared to the Total
allowable concentrations to determine if a permit limit is necessary. If the predicted max exceeds
the acute or chronic Total allowable concentrations, the discharge is considered to show
reasonable potential to violate the water quality standard, and a permit limit (Total allowable
concentration) is included in the permit in accordance with the U.S. EPA Technical Support
Document for Water Quality -Based Toxics Control published in 1991.
7. When appropriate, permit writers develop facility specific compliance schedules in accordance
with the EPA Headquarters Memo dated May 10, 2007 from James Hanlon to Alexis Strauss on
40 CFR 122.47 Compliance Schedule Requirements.
The Total Chromium NC WQS was removed and replaced with trivalent chromium and
hexavalent chromium Water Quality Standards. As a cost savings measure, total chromium data
results may be used as a conservative surrogate in cases where there are no analytical results
based on chromium III or VI. In these cases, the projected maximum concentration (95th %) for
total chromium will be compared against water quality standards for chromium III and
chromium VI.
9. Effluent hardness sampling and instream hardness sampling, upstream of the discharge, are
inserted into all permits with facilities monitoring for hardness -dependent metals to ensure the
accuracy of the permit limits and to build a more robust hardness dataset.
10. Hardness and flow values used in the Reasonable Potential Analysis for this permit included:
Parameter
Value
Comments (Data Source)
Average Effluent Hardness, mg/L
36.94
Submitted DMRs
(Total as CaCO3)
Average Upstream Hardness, mg/L
11.48
Provided by Facility per request
(Total as CaCO3)
7Q 10 summer (cfs)
13.20
Current Fact Sheet
1Q10 (cfs)
10.93
Calculated in RPA
Permitted Flow (MGD)
6.018.0
tCurrentpermit
Date: October 2, 2024
Permit Writer: GM Perlmutter
Page 4 of 4

NC Department of Environment and Natural Resources
Model Mercury Minimization Plan
Background
The North Carolina Department of Environment and Natural Resources, Division of Water Resources
(DENR), has issued a statewide total maximum daily load (TMDL) for mercury. The TMDL responds to
a statewide fish consumption advisory for mercury. The TMDL calls for a 67% reduction in mercury
levels from the year 2002 baseline mercury loading. The ultimate goal of the TMDL is to ensure safe -
levels of mercury in fish throughout North Carolina for human consumption.
As explained in the TMDL, 98 percent of mercury in North Carolina waters comes from atmospheric
sources — the vast majority of which are located outside of the State. Under the Clean Water Act,
atmospheric deposition of mercury into surface waters is regarded as a nonpoint source. Minor amounts
of mercury are discharged directly into surface waters by industrial and municipal point sources as a
group. Specifically, the TMDL determined that point sources contribute less than two (2) percent of the
annual mercury loadings to State waters. The TMDL allocates two percent of the statewide allowable
loadings collectively to the point source sector. This does not mean that an individual discharger may not
have significant levels of mercury in its discharge in terms of local water quality considerations. While
we expect such instances to be rare based upon the Department's review of statewide mercury data,
dischargers with higher mercury loadings will be expected to implement more aggressive mercury
controls.
Notably, unlike any other source, local governments actually reduce mercury loadings in the environment
by first filtering mercury out in the treatment of public drinking water (particularly where the source of
raw drinking water is surface water) and then a second time when wastewater is treated.
In order to implement the two percent point source sector waste load allocation, the Department has
developed a point source permitting strategy which is located at http://deq.nc.gov/about/divisions/water-
resources/planning/modeling-assessment/special-studies/mercury-tmdl. The Environmental Management
Commission has approved both the TMDL and the Permitting Strategy. The permitting strategy calls for
certain point sources to develop and implement mercury minimization plans (MMPs). For POTWs, an
MMP will be required if the facility has (1) a permitted design capacity of more than two million gallons
per day and (2) mercury at quantifiable levels in their effluent. MMPs feature best management practices
and have been implemented successfully in numerous states around the country. The attached document
is the City of Statesville's MMP.
Typically, MMPs focus on pretreatment controls — a local government's interaction with non -domestic
users of its sewer system as well as outreach to the public at large regarding the proper use and disposal of
household products containing mercury.
The MMP approach is intended as a reasonable, low-cost approach toward making some progress toward
managing the two percent loading statewide from point sources. Mercury treatment and even testing is
very expensive and does not make sense to reduce a small part of the already insignificant two percent
overall point source annual loading to State waters.
3/6/2019

MODEL MUNICIPAL MERCURY MINIMIZATION PLAN
March 7, 2023
SECTION I - PURPOSE
The purpose of this Mercury Minimization Plan ("MMP") is to describe best management practices
through which the City of Statesville will seek to reduce the amount of mercury discharged into its
system and, ultimately, to the environment. The MMP compiles mercury reduction -related efforts to -date
and potential future action items. It is designed to be a working document to help guide Third Creek
WWTP in its efforts to control mercury loadings discharged into its Publicly Owned Treatment Works
(POTW) by users of the sewer system. Such a reduction in loadings to the sewer system should translate
to a reduction in the amount of mercury which is discharged from the treatment plant. The management
practices summarized below may also help control some of the mercury reaching our storm sewer system
as well.
SECTION II — FACILITY DESCRIPTION
The City of Statesville operates a publicly owned treatment works (POTW); including a collection
system and wastewater treatment plant (WWTP) that serves Statesville, North Carolina.
The 3rd Creek WWTP utilizes a conventional activated sludge process that primarily treats domestic
waste water generated from residential areas within the city. The raw sewage enters the WWTP via 48"
gravity main and then into an 80,000-gallon wet well at the Main Pump Station. There, the flow enters
one of two perforated panel type bar screens. One of four main pumps rated at 5 MGD pumps the raw
sewage to a grit separator. At this point the raw sewage is mixed with return activated sludge and
distributed into two Oxidation basins with a capacity of 3 MG each. This mixed liquor gravity flows
through a 6,200-gallon flow splitter box. The mixed liquor flows into two secondary clarifiers with a
capacity of 2.3 million gallons each. At this point, the RAS flows into a wet well with a capacity of 42,000
gallons and pumped back into the flow distribution box. The effluent gravity flows from the secondary
clarifiers to the two chlorine contact basins with a capacity of 125,000 gallons each. The final effluent is
treated with Sodium Bisulfite for de -chlorination as it flows into an 80,000-gallon post aeration basin.
From here, it is a gravity flow to Third Creek.
The average flow for this facility is 1.0 MGD.
Most municipal treatment plants are not designed to remove mercury and it is exceedingly expensive to
do so to very low levels. Incidental mercury removal occurs through typical municipal treatment with
trace levels of mercury (and other metals) ending up in solids removed from the raw wastewater.
Mercury is not used in the treatment processes at the WWTP. Mercury may be introduced into the sewer
system through a variety of sources, such as from industrial users, laboratories, and other businesses.
Residual deposits of mercury are also possible in the sewer system from historic practices. Finally, trace
3/6/2019

amounts from household products and atmospheric deposition (both wet and dry) contribute to sewer
system mercury loadings.
While there is typically some mercury contributed to public sewer systems statewide, it is usually in
minute quantities and comprises a tiny portion of the already insignificant statewide loading for all point
sources - just two percent of the annual mercury loadings to all State waters.
3/6/2019

SECTION III — PROGRAM PLAN
A. EVALUATION OF POTENTIAL NON -DOMESTIC SOURCES CONTRIBUTING
MERCURY TO THE POTW
Within 24 months from the NPDES required 180-day period for development of an MMP, the City of
Statesville will evaluate available information to assess the potential for non -domestic users of the sewer
system to contribute mercury to the system. The information to be reviewed may include: (1) POTW
influent and effluent mercury data and trends; (2) industrial user permits and associated mercury
monitoring data; (3) Toxics Release Inventory (TRI); (4) state hazardous site registry and the National
Priority List relating to mercury contamination; and (5) historical records of industrial sites which have
contributed mercury loadings to the sewer system.
The City of Statesville will also survey and evaluate the following common sources of mercury in its
service area: (1) dentist offices; (2) hospitals; (3) laboratories; (4) auto recyclers; and (5) other potential
sources of mercury based on existing information.
The City of Statesville will request that industrial users review mercury concentrations in high -volume
process chemicals and demonstrate that the mercury concentrations are below industry average. The City
of Statesville will request that alternative sources for chemicals be explored if the mercury levels are
determined to be significantly higher than would normally be expected.
The evaluation of potential non -domestic sources of mercury to the sewer system will be updated every
five years, as warranted by prior sampling results and any additional new potentially significant sources to
the system.
B. ADDITIONAL CONTROL MEASURES
This MMP identifies reasonable and cost-effective control measures to minimize mercury being
discharged into the POTW. Below is a listing of initial BMPs for this POTW.
Pollution Prevention
Substances used at the WWTP will be evaluated to determine if they contain mercury or mercury -based
compounds. Any such chemicals will be evaluated for substitution with non -mercury -containing
substances.
Housekeeping, Spill Control and Collection, and Education
The City of Statesville will develop procedures to minimize the possibility of any spill or release at the
WWTP involving mercury containing substances. The City of Statesville will add mercury identification
and proper disposal to ongoing and future operator training procedures.
Public Outreach
4
3/6/2019

The City of Statesville will make available educational information regarding sources of household
mercury and appropriate use/disposal practices. This information may be posted on the City of
Statesville's website. The availability of this information will be highlighted in July, 2019 outreach to
City of Statesville's customers. The City of Statesville will also facilitate public awareness regarding
community collection points for mercury -containing products from residents/customers for proper
disposal. Periodic reminders of such collection programs will be provided as part of the City of
Statesville's ongoing public outreach.
Laboratory Practice
The City of Statesville operates a laboratory for purposes of complying with state and federal monitoring
and sampling requirements. The laboratory is a potential source of small quantities of mercury -
containing compounds. Laboratory employees will be trained in the proper handling and disposal of these
materials. The laboratories have also replaced mercury thermometers with non -mercury thermometers,
whenever practical.
C. TRACKING AND MONITORING
In order to assess the implementation of the control measures, the City of Statesville proposes to
undertake the following evaluations beginning after the first full year that this MMP is implemented:
1. Survey annually at least ten percent (10%) of any non -domestic users identified as
possible significant sources of mercury to the POTW;
2. Track the implementation of the programs outlined above;
3. Monitor influent mercury at least annually. Require significant non -domestic sources of
mercury to monitor periodically, as warranted; and
4. Measure effluent mercury as required by the NPDES permit.
These efforts will allow the City of Statesville to establish a baseline of influent and effluent mercury
levels to assist in identifying any trends in mercury contributions from domestic and non -domestic users
of the sewer system. This baseline will be tracked annually.
SECTION IV — IMPLEMENTATION OF CONTROL MEASURES
The City of Statesville disposes of Mercury filled laboratory thermometers by using a Bio-Hazard bag
and properly disposing of this waste using a chemical disposal company specializing in this type of waste.
The City of Statesville uses this same type of company to pick up small electrical components that
contain mercury for proper disposal.
The City of Statesville will implement the control measures summarized in Section III over the permit
term and will update this MMP as warranted.
3/6/2019

SECTION V - REPORTING
A summary of the MMP activities will be submitted as part of the NPDES permit renewal process.
3/6/2019

10/2/24 WQS = 12 ng/L MERCURY WQBEL/TBEL EVALUATION V:2013-6
Facility Name
Statesville - Third Creek WWTP / NC0026441 No Limit Required
/Permit No.
MMP Required
Total Mercury 1631E PQL = 0.5 ng/L 7Q10s = 13.200 cfs WQBEL = 29.03 ng/L
Date Modifier Data Entry Value Permitted Flow = 6.000 47 ng/L
3/9/20
3.01
3.01
6/8/20
3.11
3.11
8/18/20
<
0.2
0.5
8/20/20
4.58
4.58
9/14/20
4.28
4.28
12/7/20
1.92
1.92
2.9 ng/L
- Annual Average for 2020
3/10/21
2.2
2.2
4/14/21
<
0.2
0.5
6/7/21
2.49
2.49
9/7/21
<
1
0.5
12/6/21
1.15
1.15
1.4 ng/L
- Annual Average for 2021
3/7/22
<
1
0.5
6/6/22
1.03
1.03
7/11/22
2.55
2.55
7/12/22
<
2
1
9/19/22
2.13
2.13
12/5/22
<
1
0.5
1.3 ng/L
- Annual Average for 2022
3/13/23
<
1
0.5
6/19/23
3.19
3.19
7/17/23
<
0.2
0.5
7/18/23
4
4
9/11/23
1.42
1.42
12/11/23
1.03
1.03
1.8 ng/L
- Annual Average for 2023
3/11/24
2.1
2.1
6/10/24
<
1
0.5
1.3 ng/L
- Annual Average for 2024