NC0023736_Fact Sheet_20210222

Fact Sheet
NPDES Permit No. NCO023736
Permit Writer/Email Contact Gary Perlmutter, [e-mail]:
Date Initiated: January 7, 2021
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 Lenoir/Gunpowder Creek WWTP
Applicant Address:
P.O. Box 958, Lenoir, NC 28645
Facility Address:
450 Pine Mountain Rd, Hudson, NC 28638
Permitted Flow:
2.0 MGD
Facility Type/Waste:
MAJOR Municipal; 55% domestic, 45% industrial'
Facility Class:
Grade III
Treatment Units:
Screening, Grit Removal, Sequence Batch Reactors, Post
Equalization, Chlorination, Dechlorination, Step Aeration
1 Pretreatment Program (Y/N)
Yes
County:
Caldwell
Region
Asheville
'From permitted industrial flow of 0.899 MGD.
Briefly describe the proposed permitting action and facility background: The City of Lenoir had applied
for an NPDES permit renewal for its Gunpowder Creek WWTP, received by DWR on August 24, 2018.
Review of the application found it to lack the three Effluent Pollutant Scan reports, which were received
from the Permittee by request. Effluent Pollutant Scans were sampled on 1/5/2017, 3/31/2017, 11/7/2017,
and 8/2/2018. The required four second species WET tests were sampled on 11/20/2013, 1/14/2014,
2/11/2014, and 4/1/2014 with three additional tests sampled on 4/18/2018, 5/15/2018, and 6/12/2018. Also
Page 1 of 14

missing were a system process narrative and the process diagram lacked water balances. These items were
received by request on January 6, 2021.
This 2.0 MGD facility serves the communities of Hudson, Lenoir and Sawmill. The WWTP treats a
combination of domestic and industrial wastewater with a pretreatment program involving 2 Significant
Industrial Users (SIUs).
2. Receiving Waterbody Information
Receiving Waterbody Information
Outfalls/Receiving Stream(s):
Outfall 001/Gunpowder Creek
Stream Segment:
11-55-(1.5)
Stream Classification:
WS-IV
Drainage Area (mi2):
12.9
Summer 7Q10 (cfs)
2.9
Winter 7Q10 (cfs):
4.0
30Q2 (cfs):
5.8
Average Flow (cfs):
17.4
IWC (% effluent):
52%
303(d) listed/parameter:
Benthos
Subject to TMDL/parameter:
State-wide Mercury TMDL
Basin/Sub-basin/HUC:
Catawba/03-08-32/03050101
USGS Topo Quad:
D13SW/Granite Falls, NC
The receiving stream segment of Gunpowder Creek is impaired for Benthos (fair rating) per the 2018 NC
303(d) list. The listing results from a 39% decrease in the benthic community from 2002 to 2007 as reported
in the 2010 Catawba River Basin Plan. According to the plan, the receiving stream is designated in the
Restoration Opportunities category, defined as a degraded waterbody in need of restoration to return the
water quality back to natural conditions. The basin plan also recommends a watershed stressor study in
Gunpowder Creek to determine the cause of a significant decline in the biological community.
3. Effluent Data Summary
Effluent data for Outfall 001 is summarized in Table 1 for the period of August 2016 - July 2020.
Table 1. Effluent Data Summary Outfall 001.
Parameter
Units
Average
Max
Min
Permit Limit 1
Flow `
MGD
1.213
7.775
0.197
MA = 2.0
Farameter
Units
Average
Max
Min
Permit Limit'
Page 2 of 14

BOD5
mg/L
6.3
60.0
0.7
MA = 30.0
WA = 45.0
BOD removal
%
96.8
98.9
92.0
> 85
TSS
mg/L
8.7
220
0.17
MA = 30.0
WA - 45.0
TSS removal
%
95.6
99.0
87.5
> 85
NH3-N (Apr 1 - Oct 31)
mg/L
0.51
6.41
0.014
MA = 2.0
WA = 6.0
NH3-N (Nov 1 - Mar 31)
mg/L
0 44
5.0
< 0.1
MA = 4.0
WA = 12.0
DO
mg/L
8.57
10.70
6.08
DA > 5.0
Fecal Coliform
(geometric mean)
#/100 mL
14
110,000
< 1
MA = 200
WA = 400
pH
S.U.
6.6
8.6
6.0
6.0 - 9.0
TRC
gg/L
23
49
7
DM = 28 3
Temperature
°C
17.6
26.1
6.1
Monitor &
Report
Total Nitrogen
(NO2 + NO3 + TKN)
mg/L
7.69
13.90
3.49
Monitor &
Report
Total Phosphorus
mg/L
2.68
6.61
0.31
Monitor &
Report
Conductivity
µmhos/cm
239
478
18
Monitor &
Report
Total Cadmium
gg/L
0.2
2.0
< 0.2
MA = 4.0
DM - 27.0
Cyanide
gg/L
5.2
< 5.0
7.0
MA = 10.0
DM = 39.0
Total Copper
gg/L
13
43
< 1
Monitor &
Report
Total Silver
gg/L
1
4
< 1
Monitor &
Report
Total Zinc
gg/L
91
507
< 1
Monitor &
Report
1 MA = Monthly Average, WA = Weekly Average, DM = Daily Maximum; DA = Daily Average.
2 Average for CY2019 = 1.337 MGD, 67% of design flow.
3 Values < 50 gg/L considered compliant.
A flow exceedence was reported in December 2018, with a note of a significant snow event occurring on
Dec. 9 on that month's DMR. A BOD exceedence was reported in April 2019 with a note of a high
rain/storm event occurring on Apr. 14, causing the SBR tanks to enter storm mode, on that month's DMR.
A Fecal Coliform exceedence was reported in January 2018, with a note of significant rain (near 2 inches
per day) on Jan. 24-25 on that month's DMR.
4. Instream Data Summary
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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).
If applicable, summarize any instream data and what instream monitoring will be proposed for this permit
action: The current permit requires instream monitoring for Dissolved Oxygen (DO), Temperature,
Conductivity, pH, Total Nitrogen and Total Phosphorus. Instream monitoring locations in the current permit
include one upstream, at least 100 ft upstream of the outfall, and one downstream at approximately 2,000
ft below it.
Instream data from August 2016—July 2020 were obtained from submitted DMR reports and compared
against state water quality standards where applicable. Data were visually checked for differences followed
by statistical testing of averages using t-test. Instream data review findings for each parameter are
summarized below.
Dissolved Oxygen (DO) — DO remains in the permit as a parameter of concern for aquatic life. Reviewed
instream DO data showed seasonal patterns of summer lows and winter highs. Instream summer minima
were above the 5 mg/L daily average water quality standard for non -trout waters (15A NCAC 02B .0211)
at both locations. Downstream DO was, on average lower than upstream DO (downstream average = 8.6
mg/L; range: 7.1-13.0 mg/L; upstream average = 8.8 mg/L; range: 6.9-14.2 mg/L). Concurrent effluent
DO data averaged 8.4 mg/L, lower than either instream average, with a range of 6.4-10.4 mg/L; however,
both forms of oxygen -consuming waste (BOD and NH3) in the effluent were found to be within their permit
limits (see Table 1 above). Therefore, the effluent does not appear to negatively impact instream DO levels
sufficiently to affect the stream standard.
Temperature — Temperature remains in the permit as a parameter of concern for aquatic life. Reviewed
instream temperature data showed seasonal patterns of summer highs and winter lows at both locations.
Downstream temperature was slightly higher (average = 17.1°C; range: 1.2-24.9°C) than that upstream
(average = 17.0°C; range: 0.1-23.5°C) with no statistically significant difference found. Temperature
maxima were below the water quality standard of 29°C for upper piedmont and mountain waters (15A
NCAC 02B .0211) at both locations.
Review of paired up- to downstream temperatures revealed four exceedences of the 2.8°C increase standard,
all in 2017. The concurrent effluent temperatures averaged higher overall at 19.36°C with higher range,
substantially so in winter (range: 6.4-26.1 °C). While instream average temperatures did not statistically
test different between up- and downstream, statistical differences were found when tested with concurrent
effluent data (ANOVA: F = 2.65; p < 0.05). It appears that the effluent can have an impact on the receiving
stream temperature.
Conductivity — Conductivity (Specific Conductance) remains in the permit as a parameter of concern due
to industrial discharges. Reviewed data showed the downstream conductivity, on average, tested higher
than upstream conductivity (downstream average = 72 µmhos/cm; range: 7-118 µmho/cm; upstream
average = 62 µmho/cm; range: 35-260 µmho/cm). Concurrent effluent Conductivity data averaged
substantially higher at 244 µmho/cm (range: 90-387 µmho/cm). Comparisons of the three data sets suggest
that the effluent is impacting the instream conductivity.
Fecal Coliform — Fecal Coliform remains in the permit as a parameter of concern for aquatic life and human
health. Instream standards include: a geometric mean of 200 cfu/100 mL (MF count) based upon at least
five samples taken over a 30-day period, and 400 cfu/100 mL in more than 20 percent of the samples
examined during such period (15A NCAC 02B .0200). Review of submitted DMR instream data found
Page 4 of 14

both instream standards to be exceeded consistently both upstream and downstream, and often throughout
the period of data reviewed (Fig. 1). The receiving stream is not impaired for Fecal Coliform according to
the 2018 NC 303(d) list. The Division's Modeling and Assessment Branch was notified, who will sample
the stream to confirm the exceedences and reassess its impairment.
Gunpowder Creek,11-55-(1.5)
upstream of WWTP
Figure 1. Instream Fecal Coliform weekly and monthly geometric means, upstream of the Gunpowder
WWTP discharge.
pH — pH remains in the permit as a parameter of concern for aquatic life. Review of DMR submitted data
found all instream measurements to be within the standards of 6.0 and 9.0 SU (15A NCAC 02B .0200).
Downstream pH (avg = 7.01 SU; range: 6.04-8.30 SU) was found to be statistically lower than upstream
pH (avg = 7.17 SU; range: 6.13-8.30 SU) (t-test; t = 10.44; p < 0.0001). Concurrent effluent pH was lower
than either instream station on average with avg = 6.63 SU and a range of 6.00-8.18 SU. The effluent
appears to be affecting the instream pH, but not so much as to cause an exceedence of the instream
standards.
Nutrient monitoring — Instream monitoring for nutrients (Total Nitrogen and Total Phosphorus) is in the
current permit with monthly sampling required from April 1—September 30. Nutrient monitoring is all that
remains of a larger set of special instream monitoring requirements placed in the permit in 1992 out of
concerns for eutrophication and resulting algal blooms in Old Millpond and Lake Hickory, located 7.0 and
9.5 miles downstream, respectively. Submitted data were reviewed like for other instream parameters.
Total Nitrogen — Total Nitrogen (TN) remains in the permit as a parameter of concern due to its potential
to cause eutrophication of the Old Millpond section of Gunpowder Creek. Review of submitted instream
data found no statistical difference between up- and downstream TN (two -sample t-test: t = 1.05; p > 0.05).
Concurrent effluent TN values were considerably higher than instream values (Table 2). While higher in
concentration, it appears that the effluent is not affecting the instream TN.
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Table 2. Instream and effluent Total Nitrogen concentrations (mg/L) at Gunpowder
Creek WWTP.
Statistic
Upstream'
Downstream
Effluent
N
27
26
27
Average
3.9
3.1
8.2
Minimum
0.4
0.5
3.5
Maximum
9.1
7.6
13.9
Total Phosphorus — Total Phosphorus (TP) remains in the permit as a parameter of concern due to its
potential to cause eutrophication of Old Millpond section of Gunpowder Creek. Review of submitted
instream data found downstream average TP to be significantly higher than upstream TP (two -sample t-
test: t = 1.05; p < 0.005). Concurrent effluent TP values were considerably higher than instream values
(Table 3), suggesting that the effluent is increasing the instream TP.
Table 3. Instream and effluent Total Phosphorus concentrations (mg/L) at
Gunpowder Creek WWTP.
Statistic
Upstream
Downstream
Effluent
N
27
26
27
Average
0.18
0.33
2.33
Minimum
< 0.02
< 0.02
0.31
Maximum
0.54
0.76
6.61
Is this facility a member of a Monitoring Coalition with waived instream monitoring (Y/N): NO.
Name of Monitoring Coalition: N/A.
5. Compliance Summary
Summarize the compliance record with permit effluent limits (past 5 years): From October 2015 through
September 2020, four limit exceedences resulted in a violation action (Table 4).
Table 4. Monitoring Report Violations: 2015-2020.
Violation Date
Parameter
Violation Type
Action 1
3/4/2017
Ammonia-N
Weekly Average Exceeded
NOV
1/26/2019
Fecal Coliform
Weekly Geometric Mean Exceeded
NOV
2/26/2019
pH
Daily Minimum Not Reached
NOD
4/20/2019
TSS
Weekly Average Exceeded
NOD
1. NOD = Notice of Deficiency issued; NOV = Notice of Violation issued.
The City obtained an Authorization to Construct (ATC) in February 2014 to add an SBR tank and
improvements to the existing system. An Engineering Certification for construction completion was
received by the Division in April 2016.
Page 6of14

Summarize the compliance record with aquatic toxicity test limits and any second species test results (past
5 years): The facility passed 19 of 19 quarterly chronic toxicity tests from March 2016 through June 2020,
as well as all four 2nd species tests, sampled in April, May, June and July 2018.
Summarize the results from the most recent compliance inspection: The most recent facility inspection,
conducted on 12/18/2019, reported no compliance issues. The most recent pretreatment compliance
inspection, conducted on 01/09/2019, also reported no compliance issues.
6. Water Quality -Based Effluent Limitations (WQBELs)
Dilution and Mixing Zones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1 Q 10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic
Life; non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA.
If applicable, describe any mixing zones established in accordance with 15,4 NCAC 2B. 0204(b): NA.
Oxygen -Consuming Waste Limitations
Limitations for oxygen -consuming waste (e.g., BOD) are generally based on water quality modeling to
ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits
(e.g., BOD = 30 mg/L for Municipals) may be appropriate if deemed more stringent based on dilution and
model results.
If permit limits are more stringent than TBELs, describe how limits were developed: BOD limits are based
on a Level B water quality model run in 1992, and are maintained in the permit.
Ammonia and Total Residual Chlorine Limitations
Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion 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 ammonia
limits in the permit of 2.0/6.0 mg/L monthly average/weekly average (summer) and 4.0/12.0 mg/L monthly
average/weekly average (winter) are based on a Level B water quality model run in 1992 for oxygen -
consuming waste. Toxicity -based Ammonia was reviewed in the attached Wasteload Allocation (WLA)
sheet using the flow design of 2.0 MGD and receiving stream low flows of summer 7Q10 = 2.9 cfs and
winter 7Q10 = 4.0 cfs. The resulting allowable concentrations were 1.7/5.1 mg/L monthly average/weekly
average (summer) and 3.8/11.4 mg/L monthly average/weekly average (winter). Because both sets of limits
approximate each other, no changes were made in the permit.
The current TRC limit of 28 µg/L was first established in the permit in 2000 as capped to protect against
acute impacts in the receiving water per the then new TRC policy. WLA calculations for TRC also cap the
allowable concentration at 28 µg/L. The current TRC limit is maintained in the permit.
Reasonable Potential Analysis (RPA) for Toxicants
If applicable, conduct RPA analysis and complete information below.
Page 7 of 14

The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality
standards, a statistical evaluation that is conducted during every permit renewal utilizing the most recent
effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC
RPA procedure utilizes the following: 1) 95% Confidence Level/95% Probability; 2) assumption of zero
background; 3) use of 1/2 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.
Effluent and upstream hardness data (n = 5 samples per sampling site) were received from the Permittee by
request. All upstream data were below the default value of 25 mg/L (range: 14.8-20.2 mg/L). Therefore,
the default value was used for upstream hardness in the RPA.
A reasonable potential analysis was conducted on effluent toxicant data collected from December 2016
through June 2020. 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: Copper, Lead, Zinc.
• 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: Total
Chromium, Silver (see Table 6).
• 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: Arsenic,
Cadmium, Chlorides, Total Phenols, Cyanide, Molybdenum, Nickel, Selenium.
• POTW Effluent Pollutant Scan Review: Three effluent pollutant scans were evaluated for
additional pollutants of concern.
o The following parameter(s) will receive a water quality -based effluent limit (WQBEL)
with monitoring, since as part of a limited data set, two samples exceeded the allowable
discharge concentration: None.
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.
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.
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 facility is a Major POTW, and a chronic WET limit at
52% effluent will continue on a quarterly frequency. The WET limit is based on the Instream Waste
Concentration (IWC) as calculated from the design flow of 2.0 MGD and the receiving stream 7Q10s of
2.9 cfs (WET Permitting Limits and Monitoring Requirements guidance memo, 8/2/1999).
Page 8 of 14

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.
Describe proposed permit actions based on mercury evaluation: A Mercury Minimization Plan (MMP)
special condition was added to the permit in 2014. An MMP summary was included with the permit renewal
application.
Submitted low level mercury data from December 2016 through June 2020 were reviewed for TMDL
evaluation. All data were detected with no averages exceeding the TBEL of 47 ng/L and no individual
values exceeding the WQBEL of 23.2 ng/L (Table 5). Because the design flow is 2 MGD and mercury was
detected in the effluent, an MMP is required. Therefore, the MMP special condition has been reworded to
maintain the MMP.
Table 5. Mercury Effluent Data Summary
2016
2017
2018
2019
2020
# of Samples
2
4
5
4
2
Annual Average Conc. ng/L
0.5
1.0
0.6
1.2
0.9
Maximum Conc., ng/L
0.50
2.30
1....
3.10
1.20
TBEL, ng/L
47
WQBEL, ng/L
23.2
Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation within
this permit: Monthly instream monitoring of nutrients (Total Nitrogen and Total Phosphorus) is in the
permit, with samples required from May 1—September 30. Nutrient monitoring was originally placed as
part of special instream monitoring requirements in 1992 out of concern for eutrophication in Old Millpond,
downstream of the discharge. Special instream monitoring requirements were included one upstream and
three downstream locations: DI at —2,000 ft from the outfall, D2 before the start of Old Millpond or at SR
1002, and D3 in the pooled area of Old Millpond. Upstream Chl-a was removed from upstream, DI and
D2 in the 2000 permit as well as the monitoring site D2. Monitoring in Old Millpond was removed from
the permit in 2005.
In the 2005 permit a nutrient optimization study requirement was inserted based on nutrient loading
concerns into Lake Hickory of the Catawba River. The resulting report, dated March 20, 2007, described
the treatment process and reported 78% TN reduction and 42% TP reduction from influent to effluent
concentrations. The requirement was removed in the subsequent (2011) permit renewal.
Other WQBEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: The receiving water is a
water supply water, which is subject to the Nitrate -Nitrogen (NO3-N) standard of 10 mg/L. An RPA was
run on effluent TN data, which includes NO3-N. Results revealed the TN maximum predicted value to be
Page 9of14

less than the NO3-N allowable concentration. No limits or monitoring of NO3-N are required and thus were
not added to the permit.
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 Permittee was asked if a
compliance schedule is needed for Copper, Lead and/or Zinc. None requested by Permittee.
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 mg/L
BOD5/TSS for Monthly Average, and 45 mg/L for BOD5/TSS for Weekly Average). YES.
If NO, provide a justification for alternative limitations (e.g., waste stabilization pond). NA.
Are 85% removal requirements for BOD5/TSS included in the permit? YES.
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 2B.0201. Each applicant for a new/expanding NPDES permit must
document an effort to consider non -discharge alternatives per 15A NCAC 2H.0105(c)(2). In all cases,
existing instream water uses and the level of water quality necessary to protect the existing use is maintained
and protected.
If applicable, describe the results of the antidegradation review, including the Engineering Alternatives
Analysis (EAA) and any water quality modeling results: NA.
9. Antibacksliding Review
Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YES/NO): NO.
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If YES, confirm that antibacksliding provisions are not violated: NA.
10. Monitoring Requirements
Monitoring frequencies for NPDES permitting are established in accordance with the following regulations
and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 2B.0500; 2) NPDES
Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance, Reduced
Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best Professional
Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not considered
effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti -backsliding
prohibitions would not be triggered by reductions in monitoring frequencies.
All parameters are monitored according to 15A NCAC 2B .0500.
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
Table 6. Current Permit Conditions and Proposed Changes.
Parameter
Current Permit'
Proposed Change
Basis for Condition/Change
Flow
MA 2.0 MGD
No change
15A NCAC 2B .0505
BOD5
MA — 30.0 mg/L
WA — 45.5 mg/L
No change
TBEL. Secondary treatment
standards/40 CFR 133/15A NCAC 2B
.0406.
TSS
MA — 30.0 mg/L
WA = 45.0 mg/L
No change
TBEL. Secondary treatment
standards/40 CFR 133/15A NCAC 2B
.0406.
Parameter
Current Permit'
Proposed Change
Basis for Condition/Change
NH3-N
Summer:
MA = 2.0 mg/L
WA = 6.0 mg/L
Winter:
MA = 4.0 mg/L
WA = 12.0 mg/L
No change
WQBEL. Calculation results based on
NC's use of EPA criteria in developing
1.0 mg/L summer and 1.8 mg/L winter
values in wasteload allocations to
protect against NH3-N toxicity
approximate existing limits for
Page 11 of 14

oxygen -consuming waste (see WLA
sheet attached).
DO
DA > 5.0 mg/L
—
No change
WQBEL. State WQ standard 15A
NCAC 2B .0200.
Fecal Coliform
MA = 200 /100 mL
WA = 400 /100 mL
No change
WQBEL. State WQ standard, 15A
NCAC 2B .0200.
Total Residual
Chlorine (TRC)
DM = 28 µg/L
No change
WQBEL. State WQ acute standard,
15A NCAC 2B .0200
pH
6 — 9 SU
No change
WQBEL. State WQ standard, 15A
NCAC 2B .0200.
Temperature
Monitor daily
No change
State WQ reporting requirements 15A
NCAC 2B .0500.
Conductivity
Monitor only
No change
State WQ reporting requirements 15A
NCAC 2B .0500.
Total Nitrogen
(NO3+NO2 + TKN)
Monitor monthly
No change
State WQ reporting requirements 15A
NCAC 2B .0500.
Total Phosphorus
Monitor monthly
No change
State WQ reporting requirements 15A
NCAC 2B .0500.
Toxicity Test
Chronic
Ceriodaphnia dubia
Pass/Fail at 52%
effluent
No change
WQBEL. No toxics in toxic amounts.
15A NCAC 2B.0200 and 15A NCAC
2B.0500.
Total Hardness
No requirement
Add effluent and
upstream monitoring
Hardness -dependent dissolved metals
water quality standards, approved in
2016, need effluent and instream
hardness data for calculations of permit
limitations.
Total Cadmium
MA = 4.0 µg/L
DM = 27.0 µg/L
Remove from
permit
No reasonable potential to exceed
allowable discharge concentration (RP)
found.
Total Chromium
No requirement
Add quarterly
monitoring
No RP found; one value > 50% of but
< Chromium VI Allowable Conc.
DWR dissolved metals guidance, 2016.
Total Copper
Monitor quarterly
MA = 15.4 µg/L
DM = 18.8 µg/L
Monitor monthly
WQBEL. Reasonable potential to
exceed allowable discharge
concentration found.
Cyanide
MA = 10 µg/L
DM = 39 µg/L
Remove from
permit
No detections above compliance level
of 10 µg/L; DWQ cyanide compliance
guidance memo, 2007.
Parameter
Current Permit'
Proposed Change
Basis for Condition/Change
Total Lead
No requirement
MA = 5.7 µg/L
DM = 136 µg/L
Monitor monthly
WQBEL. Reasonable potential to
exceed allowable discharge
concentration found.
Total Silver
Monitor quarterly
No change
No detects at < 1 µg/L in previous 2
years with one low detection in March
Page 12 of 14

2017. Division guidance for dissolved
metals, June 2016.
Total Zinc
Monitor quarterly
MA = 225 µg/L
DM = 225 µg/L
Monitor monthly
WQBEL. Reasonable potential to
exceed allowable discharge
concentration found.
Total Mercury
Mercury
Minimization Plan
(MMP)
Revise MMP to
require its
maintenance
In accordance with 2012 Statewide
Mercury TMDL Implementation, per
facility size and monitoring data
criteria.
Effluent Pollutant
Scan
Three times per
permit cycle
Update sampling
years to 2023, 2024,
2025
40 CFR 122
Electronic Reporting
Electronic Reporting
Special Condition
Update condition to
remove submittal of
hardcopies and
extended Phase 2
deadline to 2025
In accordance with EPA Electronic
Reporting Rule 2015.
1MGD = Million gallons per day, MA = Monthly Average, WA = Weekly Average, DM = Daily Maximum.
13. Public Notice Schedule:
Permit to Public Notice: 01/17/2021.
Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days following
the publication date of the public notice. Any request for a public hearing shall be submitted to the Director
within the 30 days comment period indicating the interest of the party filing such request and the reasons
why a hearing is warranted.
14. NPDES Division Contact:
If you have questions regarding any of the above information or on the attached permit, please contact Gary
Perlmutter at [phone] or via email at [e-mail].
15. Fact Sheet Addendum (if applicable):
Were there any changes made since the Draft Permit was public noticed (Yes/No): Yes. Comments were
received from the Lisa Triplett (Permittee) and Zachary Thomas (DWR-Aquatic Toxicity Branch). Ms.
Triplett suggested correcting monitoring frequencies of pH an TRC; Mr. Thomas commented that the draft
looked good from an aquatic toxicity standpoint. A signed review form was received from Nichole Hairston
(DWR-Public Water Supply/Asheville Regional Office) indicating her concurrence with issuing the permit.
No comments were received from USEPA or any other party.
If Yes, list changes and their basis below:
Two minor corrections were made in response to comments by Lisa Triplett (Permittee):
• Monitoring frequencies for effluent pH and TRC were corrected from weekly (pH) and 2/week
(TRC) to daily for consistency with the existing permit.
Page 13 of 14

16. Fact Sheet Attachments (if applicable):
• EPA Application 2A, Attachment A (completed) with requested Process Diagram and Process
Narrative
• Pretreatment information form, completed
• Final 2018 NC 303(d) list, page 42
• 2010 Catawba River Basin Plan, pages 59-60, 167
• Effluent summary charts and tables
• BOD and TSS removal calculator output tables
• Instream Monitoring summary charts and tables
• Monitoring Report (MR) Violations page
• WET testing and Self -Monitoring Summary, page 67
• Permit and Pretreatment Compliance Inspection Reports
• NH3/TRC WLA Calculations sheet
• RPA Spreadsheet Summary
• Dissolved Metals Implementation — Freshwater
• Effluent, upstream hardness results
• Mercury WQBEL/TBEL Evaluation data and summary table
• Draft permit comment e-mail from Lisa Triplett (Permittee)
• Draft permit comment from Zachary Thomas (DWR-Aquatic Toxicity Branch)
• Signed draft permit PWS review form from Nichole Hairston (DWR-Asheville Region)
Page 14 of 14

Attachment A —Request for Missing Information
Table 2. EPA Application Form 2A Missing Information
40 CFR
1.1
122.21(j)(1)
Email address of facility contact [e-mail]
1.2
Applicant email address Same as above
1.3
Email address of the organization transporting the discharge for treatment prior to discharge
1.4
Email address of the organization receiving the discharge for treatment prior to discharge
1.5
Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(n)? (Check all that apply. Consult
with your NPDES permitting authority to determine what information needs to be submitted and when.)
❑ Discharges into marine waters (CWA Section ❑ Water quality related effluent limitation (CWA
301(h)) Section 302(b)(2))
X❑ Not applicable
1.6
Email address of contractor responsible for operational or maintenance aspects of the treatment works
40 CFR
122.21(j)(6)
1.7
40 CFR
Indicate the number of SIUs and NSCIUs that discharge to the POTW.
Number of SIUs
Number of CIUs
2
122.22(a) and (d)
Certification Statement
I certify under penalty of law that this document and all attachments
with a system designed to assure that qualified personnel properly
inquiry of the person or persons who manage the system, or those
information submitted is, to the best of my knowledge and belief, true,
penalties for submitting false information, including the possibility
0
were prepared under my direction or supervision in accordance
gather and evaluate the information submitted. Based on my
persons directly responsible for gathering the information, the
accurate, and complete. I am aware that there are significant
of fine and imprisonment for knowing violations.
Name (print or type first and last name) Elise Triplett
Official title Superintendent
Signature E Triple,rriple,tt
Date signed 1 /6/2021

2.00 MGD
INFLUENT
PARSHALL
FLUME
AN D
MECHANICAL
SCREEN
VORTEX
GRIT
SYSTEM
INFLUENT PUMP
STATION (4 PUMPS)
0.67 MGD
0.67 MGD
0.41 MGD
0.26 MGD
0.41 MGD
0.26 MGD
0.66 MGD
A/R
SBR TANK #1
SBR TANK #3
SBR TANK #2
•
1
i
SBR TANK #4 \ \
SBR TANK #5
5 BLOWERS
i
SODIUM
HYPOCHLORITE
1
POST-EQ BASIN
WASTE ACTIVATED SLUDGE (WAS)
PROCESS FLOW DIAGRAM
GUNPOWDER CREEK WWTP
CITY OF LENOIR
SULFUR
DIOXIDE
SLUDGE
HOLDING TANK
CHLORINE
CONTACT
BASIN
DECHLORINATION
AND POST
AERATION
SLUDGE HAULED TO
LOWER CREEK WWTP
2.00 MGD
EFFLUENT
�I
0
I � I
: O:
mcgill

Process Flow Diagram Narrative
Gunpowder Creek WWTP
City of Lenoir, North Carolina
Wastewater enters the WWTP by gravity and flows through the Parshall Flume and influent fine
screen, where inorganic screenings are removed. The influent pump station contains four (4)
pumps that deliver raw wastewater to the five (5) Sequencing Batch Reactor (SBR) tanks. The
SBR tanks operate as a three (3) train treatment system on offset cycle schedules. SBR Tanks #1
and #3 are on the first cycle, Tanks #2 and #4 are on the second cycle, and Tank #5 is on the
third cycle. Each SBR tank has diffused aeration fed by a bank of blowers, a floating mixer, a
floating decanter, and submersible WAS pump.
SBRs provide flow equalization, aeration, settling, and sludge wasting processes all in one tank.
The SBR process is operated and sequenced by a control system that determines the cycle
times and influent/effluent valve operation. As wastewater enters the SBR, the tank fills from
the minimum water level for a pre -determined time period, with mixing by a floating mixer to
begin the process. During the React -Fill stage, the blowers provide air to the basin while the
mixer continues to operate.
After the fill phases are completed, the influent valve to the SBR tank is closed and the unit
enters the React phase. Simultaneously, influent valves open to another SBR treatment train to
maintain a continuous inflow into the overall SBR system. Aeration is provided by blowers
located adjacent to the tanks providing air to the diffusers installed in the bottom of each tank
to achieve BOD and ammonia reduction.
The aerators and mixers are then turned off and settling commences. During the Settle phase,
quiescent conditions are provided to allow liquid -solid separation in the basin. After solids have
settled, the floating mechanical decanter withdraws supernatant from the top of the fluid in
the basin and discharges the treated wastewater to the post -equalization basin. Since SBRs
decant in a "batch" process in the Decant phase, supernatant discharged from each unit is
transferred to a post -equalization (post-EQ) basin where peak effluent flows are equalized.
The flow in this basin is chlorinated for disinfection using a 12.5% sodium hypochlorite solution
before being pumped by two (2) submersible pumps equipped with variable frequency drives to
the chlorine contact basin. The chlorine contact basin provides contact time to disinfect the
plant flow. After disinfection is complete, the flow stream is dechlorinated using sulfur dioxide
and feed pumps. Finally, treated wastewater is discharged over the cascade aerator to raise
the dissolved oxygen level prior to discharging to Gunpowder Creek.
Since the treatment process occurs within a single tank, SBRs do not require return pumping
sludge facilities. Submersible waste activated sludge (WAS) pumps are included to waste
sludge from each basin to control biomass and to maintain a consistent level of mixed liquor
suspended solids. Following the SBR Decant phase, the WAS pumps transport sludge to the
sludge holding tank equipped with a coarse bubble diffuser system. Liquid sludge is stored in
the Sludge Holding Tank, before being hauled to the City's Lower Creek WWTP for processing as
a Class A sludge.

NPDES/Aquifer Protection Permitting Unit Pretreatment Information Request Form
PERMIT WRITER COMPLETES THIS PART:
PERMIT WRITERS - AFTER vou get this form back
from PERCS:
Check all that apply
Notify PERCS if LTMP/STMP data we said should
Date Prepared
9/23/2020
municipal renewal
X
be on DMRs is not really there, so we can get it for
Prepared by
Gary Perlmutter
new industries
you (or NOV POTW).
Facility Name
Gunpowder Cr WWTP
WWTP expansion
- Notify PERCS if you want us to keep a specific POC
Permit Number
NC0023736
Speculative limits
in LTMP/STMP so you will have data for next permit
Region
Asheville
stream reclass.
renewal.
- Email PERCS draft permit, fact sheet, RPA.
Basin
Catawba
outfall relocation
- Send PERCS paper copy of permit (w/o NPDES
7Q10 change
boilerplate), cover letter, final fact sheet. Email RPA if
other
changes.
other
Comments:
Facility is a 2.0 MGD POTW w/ a pretreatment program involving 2 Sills reported in the permit application.
PERCS
Status
PRETREATMENT STAFF COMPLETES THIS PART:
of Pretreatment Program (check all that apply)
1) facility has no SIU's, does have Division approved Pretreatment Program that is INACTIVE
_
2) facility has no SIU's, does not have Division approved Pretreatment Program
_
x
3) facility has Sills and DWQ approved Pretreatment Program (list "DEV" if program still under development)
x
3a) Full Program with LTMP
3b) Modified Program with STMP
4) additional conditions regarding Pretreatment attached or listed below
Flow, MGD
Permitted
Actual
Time period for Actual
STMP time frame:
Industrial
0.889
0.12
2013-2016
Most recent:
Uncontrollable
n/a
1.101
Next Cycle:
POC in LTMP/
STMP
Parameter of
Concern (POC)
Check List
POC due to
Non-
D sDChSPermit
Limit
Requiredby
Required
by 503
Sludge**
tOC o SIU**e
POTW POC
(Explain
below)****
STMP
Effluent
Freq
LTMP
Effluent
Freq
BOD
x
x
4
Q
TSS
x
x
4
Q
Q = Quarterly
NH3
x
x
4
Q
M = Monthly
Arsenic
x
x
4
Q
Al
Cadmium
x
AI
x
x
4
Q
AI
Chromium
AI
x
4
Q
AI
Copper
x
AI
x
x
4
Q
Cyanide
x
x
4
Q
Is all data on DMRs?
AI
Lead
AI
x
x
4
Q
YES
x
Mercury
x
x
4
Q
NO (attach data)
Molybdenum
x
x
4
Q
AI
Nickel
A/
x
x
4
Q
Silver
x
x
4
Q
Selenium
x
x
4
Q
AI
Zinc
x
AI
x
x
4
Q
Is data in spreadsheet?
Total Nitrogen
x
4
Q
YES (email to writer)
Phosphorus
x
x
4
Q
NO
4
Q M
4
Q M
4
Q M
4
Q M
*Always in the LTMP/STMP
** Only in LTMP/STMP if sludge land app o composte (dif POCs for incinerators)
*** Only in LTMP/STMP while SIU still discharges to POTW **** Only in LTMP/STMP when pollutant is still of concern to POTW
Comments to Permit Writer(ex.. explanation of anv POCs; info vou have on IU related investigations into NPDES problems):
23736 Pretrtmt info form_2020
Revised: July 24, 2007

2018 NC Category 5 Assessments "303(d) List" Final
Catawba River Basin
Upper Catawba Subbasin
03050101
D¢.ilerfl u] Lint. menial R�y�
11-39-4b
Greasy Creek
From SR 1305 to Lower Creek
Classification
C
Length or Area
3
Units
FW Miles
Previous AU Number
Assessment Criteria Status Reason for Rating
Parameter of Interest
Category
Exceeding Criteria Fair
rExceeding Criteria FCB 5in30 GM >200 or >20%
Benthos (Nar, AL, FW)
Fecal Coliform (GM 200/400, REC, FW)
5
5
11-55-(1.5) Gunpowder Creek (Old Mill Pond)
From a point 0.5 mile downstream of Caldwell County SR 1127 to a point 0.8 mile downstream of Billy Branch
Classification
[WS-IV Length or Area L
13
Units FW Miles
Previous AU Number
Assessment Criteria Status Reason for Rating Parameter of Interest
Category
Exceeding Criteria
Fair Benthos (Nar, AL, FW)
11-54-(0.5) Horseford Creek
From Frye Creek to a point 0.7 mile upstream of mouth
Classification WS-IV
Length or Area
0
Units FW Miles
Previous AU Number
Assessment Criteria Status Reason for Rating
arameter of Interest
Category
Exceeding Criteria Poor
Benthos (Nar, AL, FW) 5
11-54-(3)
Horseford Creek
From a point 0.7 mile upstream of mouth to Lake Hickory, Catawba River
Classification WS-IV;CA Length or Area
1
Units
FW Miles
Previous AU Number
Assessment Criteria Status Reason for Rating
Parameter of Interest
Category
Exceeding Criteria
Poor
Benthos (Nar, AL, FW)
6/3/2019 2018 NC Category 5 Assessments "303(d) List" Approved by EPA May 22,2019 Page 42 of 262

A57
FCB:
DWQ's Asheville Regional Office will be conducting a routine inspection of the City of Lenoir's wastewater collection
system in coordinated efforts with the city to assist in finding leaks and pipe failures. The City has contacted an
engineering firm to evaluate the WWTP and the collection system. EEP has been a strong lead in this watershed and will
be conducting additional studies and stream walks to find additional sources such as failing septic systems. DWQ, along
with EEP and the City of Lenoir, will also be working with Caldwell County SWCD to find additional solutions for excess
FCB within this system.
Water Quality Improvements & Success Stories
Upper Lower Creek (030501010701)
Unnamed Tributary to Zacks Fork:
A Notice of Violation (NOV) was issued by Division of Land Resources (DLR) in March of 2008 to the property owner of a
development under construction in Caldwell County NC for sediment and erosion control violations. DLR notified DWQ of
the violations and noted the failure to control sediment on the property was causing water quality issues. In April 2008,
DWQ performed an inspection of the development to address this situation and found the site was in violation of the
permit resulting in another NOV following this inspection.
The site was found to have NCG010000 Stormwater Permit condition violations due to sediment impacts to an Unnamed
Tributary (UT) to Zacks Fork. The impacts averaged 8 inches of sediment buildup throughout the channel for approximately
400 linear feet.
The DWQ NOV required a response from the property owner which was received in May of 2008. The responsible party
hired an Environmental Consultant to assist with compliance. The Consultant submitted to DWQ a response indicating
how and when all permit condition violations were to be resolved or met. The response included a Sediment Removal
Restoration Plan. This plan was approved by DWQ in May of 2008 and restoration work began on the site in June 2008.
Sediment was removed from the channel by manual labor with shovels and buckets. The laborers were overseen by
the Consultant, who is experienced in stream geomorphology, to make sure the sediment was removed without further
damage to the stream bed and bank.
The Consultant sent a Final Sediment Removal Restoration Report to DWQ in June 2008. DWQ performed a follow up
inspection in June 2008. In July 2008, DWQ sent a letter to the responsible party indicating the violation had been
resolved.
LAKE RHODHISS - CATAWBA RIVER (0305010108)
Restoration Opportunities
McGalliard Creek -Lake Rhodhiss (030501010801)
McGailiard Creek [AU: 11-44-(3)]:
McGailiard Creek is approximately four miles long and drains
residential, agricultural and forested land cover into Lake
Rhodhiss. The creek was monitored in 2007 and received
an improved benthic rating of Good -Fair as compared to
the Fair rating in 2003. There is no indication as to why the benthic community has
improved. This rating will remove the creek from the Impaired Waters list for its benthic
impairment; however, it will remain on the 2008 and 2010 Impaired Waters lists for the
fish community impairment from a Poor rating in 2003. DWQ will re -sample the fish
community during the next sampling cycle to evaluate if water quality improvements
are seen there as well.
Gunpowder Creek (030501010803)
Gunpowder Creek [AU: 11-55-(1.5)]:
This middle portion of Gunpowder Creek is a little over 13 miles long and flows through
parts of the Town of Hudson and Granite Falls. The creek eventually flows into Lake
Hickory. This creek will be on the Impaired Waters list for the first time in 2008 due
to a Fair benthic rating. Between the 2007 sample and the 2002 sample, the benthic
community decreased by 39%. This is a significant decline and indicates major impacts
to the community between 2002 and 2007. The habitat had not changed much since the
USE SUPPORT: IMPAIRED (4 MI)
2008 IR Cat.
5
2010 IR Cat.
5
Benthos
(CB82)
Good -Fair (2007)
Fish Com
(CF41)
Poor (2003)
USE SUPPORT IMPAIRED (13 MI)
2008 IR Cat.
2
2010 IR Cat.
5
Benthos
(CB254)
Fair (2007)
1.33

NC DWQ CATAWBA RIVER BASIN PLAN: Catawba River Headwaters Subbasin HUC 03050101
A58
previous sample, concluding the decline is due to waterborne pollutants. The cause of this decline is unknown. Possible
sources could include urban stormwater runoff and impacts from drought. The protection of this subwatershed is critical
to the health of Lake Hickory because inputs here flow downstream and impact the lake. As resources become available,
DWQ will conduct further biological, and if possible, physical/chemical monitoring to narrow down the possible sources.
However, DWQ supports and recommends this issue be studies on a local level.
Drowning Creek -Catawba River (030501010804)
Horseford Creek [AU: 11-54-(0.5)]:
A half mile portion of Horseford Creek flows through the City of Hickory and drains a
large industrial area. It was monitored in 2002 for the first time to assess a citizen
complaint. The instream habitat was stable; however, the benthic community received
a Poor rating. This unusual combination of good habitat and poor biological integrity
suggests that even favorable instream habitat cannot compensate for the toxic effects
of poorly controlled urban runoff. The City of Hickory adopted a Phase II Stormwater
Ordinance in July of 2007 to address the impacts of urban stormwater runoff. The
creek has not been monitored since these efforts were made by the City. DWQ will re -sample this site during the next
monitoring cycle to re-evaluate the stream's health. For more information on the City of Hickory's Stormwater Program,
visit the City's website.
USE SUPPORT IMPAIRED (0.4 MI)
2008 IR Cat.
5
2010 IR Cat.
5
Benthos
(CB115)
Poor (2002)
Protection Priorities
McGalliard Creek -Lake Rhodhiss (030501010801)
Smoky Creek [AU: 11-41-(1)]:
The eight mile upper portion of Smoky Creek drains mostly residential and forested
lands and some agricultural land. During the 2002 monitoring, excess sediment covered
much of the benthic habitat causing the creek to be rated as Good -Fair. Since that time,
silt within the creek has been reduced and there are signs of the benthic community
returning. Sources of the sediment could be farming activities near the monitoring
site. DWQ will work with SWCD to evaluate the need for agricultural BMPs that target
sediment runoff.
Gunpowder Creek (030501010803)
Silver Creek [AU: 11-56-(2)]:
The lower segment of Silver Creek drains mostly agricultural properties as well as
residential properties into Gunpowder Creek just before it reaches Lake Hickory. In
2002, this creek was sampled for the first time and received a benthic rating of Good
Fair. The local SWCD completed the placement of 16 agricultural BMPs within the
creeks drainage area between 2006 and 2008. These BMPs are focused erosion and
nutrient reductions, waste management, sediment reductions and stream protection.
DWQ will sample this site again during the next sampling cycle to assess for stream
health improvements as a result of these efforts.
Drowning Creek -Catawba River (030501010804)
Drowning Creek [AU: 11-52-(1)]:
Drowning Creek drains mostly residential and agricultural lands before flowing into
the western portion of Lake Hickory. This creek was sampled for the first time in
2007 and received a Good -Fair fish community rating. This moderate rating is likely a
result urban stormwater runoff and sedimentation from non -point sources. The City of
Hickory adopted a Phase II Stormwater Ordinance in July of 2007 to address the impacts
of urban stormwater runoff. DWQ will continue to monitor this location during the next
sampling cycle to help further understand the streams biological health.
USE SUPPORT: SUPPORTING (8 MI)
2008 IR Cat.
2
2010 IR Cat.
2
Benthos
(CB88)
Good (2007)
Fish Com
(CF53)
Excellent (2007)
USE SUPPORT: SUPPORTING (0.8 MI)
2008 IR Cat.
2
2010 IR Cat.
2
Benthos
(CB129)
Good -Fair (2002)
USE SUPPORT. SUPPORTING (9 Mi)
2008 IR Cat.
2010 IR Cat.
2
Fish Com
(CF72)
Good -Fair (2007)
Watershed Recommendations Ft Action Plans
As with the Lower Creek Watershed, this entire 10-digit watershed (Lake Rhodhiss-Catawba River) drains directly into
Lake Rhodhiss or Lake Hickory making protection and enhancement of its water quality critical to protecting Lake
Rhodhiss and Hickory. A multi -partnership effort led to the completion of the Lake Rhodhiss Watershed Management Plan
1.34

BENTHIC MACROINVERTEBRATE SAMPLE
A165
Waterbody
Location
Station ID
Date
Bioclassification
Gunpowder Cr
SR 1718
CB114
08/01/07
Fair
County
Subbasin
8 digit HUC
Latitude
Longitude
AU Number
Level IV Ecoregion
Caldwell
32
03050101
355039
812610
11-55-(1.5)
Northern Inner Piedmont
Stream Classification
Drainage Area (mi2)
Elevation (ft)
Stream Width (m)
Stream Depth (m)
WS-Iv
19
1070
10
0.3
Visible Landuse (%)
Forested/Wetland
Urban
Agriculture
Other (describe)
60
20
20
0
Upstream NPDES Dischargers (>1MGD or <1MGD and within 1 mile)
NPDES Number
Volume (MGD)
City of Lenoir, Gunpowder Creek WWTP
NC0023736
2
Water Quality Parameters
Temperature (°C)
Dissolved Oxygen (mg/L)
Specific Conductance (pS/cm)
pH (s.u.)
Water Clarity
20.6
7.4
103
6.7
slightly turbid
Habitat Assessment Scores max)
Channel Modification (5)
Instream Habitat (20)
Bottom Substrate (15)
Pool Variety (10)
Riffle Habitat (16)
Left Bank Stability (7)
Right Bank Stability (7)
Light Penetration (10)
Left Riparian Score (5)
Right Riparian Score (5)
Total Habitat Score (100)
Sample Date
4
8
3
8
7
6
6
10
1
4
57
Sample ID
Substrate
ST
Site Photograph
mostly sand with small amounts of cobble and gravel near bridge
EPT
BI
EPT BI
Bioclassification
08/01/07
10283
---
14
---
4.80
Fair
08/21/02
8967
---
23
---
4.73
Good -Fair
Taxonomic Analysis
There was a loss of nine EPT taxa from the sampling event in 2002 compared to the effort in 2007. Most of the loss occurred within the
Ephemeroptera as eight of those taxa collected in 2002 were not collected in 2007: Heterocloeon, Plauditus, Pseudocloeon propinquum, Baetisca,
Caenis, Hexagenia, Heptagenia marginalis, and Stenacron pallidum. Maccaffertium pudicum was uncollected in 2002 and rare in 2007. Plecoptera
were entirely different between the two sampling events: Leuctra, Acroneuria abnormis, and Pteronarcys were collected in 2002; Tallaperla and
Perlesta in 2007. All stonefly taxa were rare in the sample from each year except for Pteronarcys , which was common in 2002. Conversely,
Trichoptera were very similar in both years with only the loss of Leucotrichia pitciptes in 2007 (it was abundant in 2002). Abundant taxa in 2007 were
Baetis pluto, Maccaffertium modestum, Isonychia, Cheumatopsyche, Hydropsyche betteni, and Neophylax oligius.
Data Analysis
The site is 7.5 miles southeast of Lenoir and about 2.5 miles stream -miles downstream of the City of Lenoir Gunpowder Creek WWTP.
Macroinvertebrate habitat is quite limited at the site. The only rocky sustrate is an artifact of the bridge; otherwise bottom sustrate is almost entirely
sand. The large loss of EPT taxa between 2002 and 2007 is not reflected by the EPT BI, i.e. it was not just sensitive taxa that were eliminated from
the latter sample. However, the loss of 39% of the number of EPT taxa between the sampling events from 2002 to 2007 is significant. No particular
stressor is indicated by the taxa lost. Macroinvertebrate habitat was limited for both sampling events and specific conductance is elevated, so
differences in the benthic community are very likely due to additional water -borne stressors.
1-B.39

Gunpowder Creek WWTP
Effluent Monitoring NC0023736
2.5
2.0
p 1.5
2 1.0
0.5
0.0
Flow
• Mo Avg Limit
•
•
• • •
•• • • • •• •• •
• • • ••i• •• • •• • • • • •,. • •• �
O�� O,� 61\ O�� O,� O�� e O,� OHO O�y
ti��y\� ro�ti�\� '���\� ��n�\� o\tip\� O,,,15 4,41, titiy\� ��tic\, ,\o,
ti
50
45
40
35
30
Sao 25
E 20
15
10
5
0
Summary Statistics
N 1461
Avg 1.213
SD 0.797
Min 0.197
Max 7.775
Summary Statistics
N 995
Avg 6.3
SD 5.8
Min 0.7
Max 60
Summary Statistics
N 996
Avg 8.7
SD 13.7
Min 0.17
Max 220
Page 1 of 6 GB Perlmutter, rev. 1/11/2021

Gunpowder Creek WWTP
Effluent Monitoring NC0023736
Ammonia-N (NH3-N)
Wk Avg ♦ Mo Avg
14
12
10
▪ 8
E 6
4
2
0
WA Limit MA Limit
ON' oti° oti oti ON' oti oti• ° oti° ov° otiy
ti
Summary Statistics
Summer
N 598
Avg 0.51
SD 0.71
Min 0.01
Max 6.41
Winter
N 397
Avg 0.44
SD 0.34
Min 0.10
Max 5.00
Summary Statistics
N 995
Avg 8.57
SD 0.75
Min 6.08
Max 10.70
Summary Statistics
N 995
Geomean 14
Min 1
Max 110000
Page 2of6
GB Perlmutter, rev. 1/11/2021

Gunpowder Creek WWTP
Effluent Monitoring NC0023736
10.0
9.0
8.0
7.0
6.0
5.0
4.0
pH
• Effluent — — L. Limit U. Limit
•
•
• • •
•
- - i • • •
O(c) ON'°' 01° 01>
°pc0' �\y61' '0' h\y41' y�\ti °\y90\1'
60
50
40
▪ 30
20
10
0
Total Residual Chlorine(TRC)
• Effluent • Limit Compliant
. .
I... �'. •r • / • • •t. •
9 .04. •• s y i .• • }• • •* J «
o !' • • •s - - •4--s• tQv
t : -• - !
•
1
•
•
•
oti° oti° oti oti oti' oti' oti° oti° oti° otiy
\°oti o\���ti �\�°\���ti h\yh�ti y�\ti�ti °\���ti
Summary Statistics
N 995
Avg 6.64
SD 0.23
Min 6.00
Max 8.63
Summary Statistics
N 1444
Avg 23
SD 7
Min 7
Max 49
Summary Statistics
N 995
Avg 18
SD 5
Min 6
Max 26
Page 3 of 6 GB Perlmutter, rev. 1/11/2021

Gunpowder Creek WWTP
Effluent Monitoring NC0023736
Summary Statistics
N 49
Avg 7.69
SD 3.19
Min 3.49
Max 13.90
Summary Statistics
N 49
Avg 2.68
SD 1.63
Min 0.31
Max 6.61
Summary Statistics
N 995
Avg 239
SD 55
Min 18
Max 478
Page 4 of 6
GB Perlmutter, rev. 1/11/2021

Gunpowder Creek WWTP
Effluent Monitoring NC0023736
Summary Statistics
N 49
Avg 0.2
SD 0.3
Min 0.2
Max 2.0
Summary Statistics
N 48
Avg 5.2
SD 0.5
Min 5.0
Max 7.0
Summary Statistics
N 17
Avg 13
SD 13
Min 1
Max 43
Page 5 of 6
GB Perlmutter, rev. 1/11/2021

Gunpowder Creek WWTP
Effluent Monitoring NC0023736
4.5
4.0
3.5
3.0
2.5
D 2.0
1.5
1.0
0.5
0.0
Summary Statistics
N 17
Avg 1
SD 1
Min 1
Max 4
Summary Statistics
N 17
Avg 91
SD 118
Min 1
Max 507
Page 6 of 6 GB Perlmutter, rev. 1/11/2021

NC0023736 Gunpowder Cr WWTP
BOD monthly removal rate
Month RR (%) Month RR (%)
August-16
September-16
October-16
November-16
December-16
January-17
February-17
March-17
April-17
May-17
June-17
July-17
August-17
September-17
October-17
November-17
December-17
January-18
February-18
March-18
April-18
May-18
June-18
July-18
August-18
September-18
October-18
November-18
December-18
January-19
97.51
98.35
98.38
96.87
97.50
95.79
95.92
94.95
96.73
97.51
97.64
96.56
97.99
98.46
97.49
97.73
98.22
95.91
96.80
96.36
95.83
97.02
97.48
98.07
98.14
98.46
97.64
96.76
96.85
92.51
February-19
March-19
April-19
May-19
June-19
July-19
August-19
September-19
October-19
November-19
December-19
January-20
February-20
March-20
April-20
May-20
June-20
July-20
August-20
September-20
October-20
November-20
December-20
January-21
February-21
March-21
April-21
May-21
June-21
July-21
92.13
91.97
92.80
97.72
97.96
97.66
97.52
98.89
98.40
98.27
97.15
98.25
96.83
97.32
96.76
94.17
92.54
97.86
#N/A
#N/A
#N/A
#N/A
#N/A
#N/A
#N/A
Outfal 1001 1/11/2021
TSS monthly removal rate
Month RR (%) Month RR (%)
August-16
September-16
October-16
November-16
December-16
January-17
February-17
March-17
April-17
May-17
June-17
July-17
August-17
September-17
October-17
November-17
December-17
January-18
February-18
March-18
April-18
May-18
June-18
July-18
August-18
September-18
October-18
November-18
December-18
January-19
97.96
98.95
98.71
95.03
95.80
91.85
95.18
92.59
96.07
98.29
98.25
97.81
97.16
98.34
95.88
97.04
97.92
95.32
91.80
96.12
93.16
95.98
95.96
97.99
97.53
98.04
98.00
95.18
90.97
92.67
February-19
March-19
April-19
May-19
June-19
July-19
August-19
September-19
October-19
November-19
December-19
January-20
February-20
March-20
April-20
May-20
June-20
July-20
August-20
September-20
October-20
November-20
December-20
January-21
February-21
March-21
April-21
May-21
June-21
July-21
89.94 Summary Statistics
93.37
87.54 n 48
96.35 Avg 96.78
92.91 SD 1.79
98.55 Min 91.97
97.66 Max 98.89
98.90 TSS removal rate
97.28 n 48
94.65 Avg 95.57
93.60 SD 2.65
96.74 Min 87.54
95.48 Max 98.95
BOD removal rate
93.93
95.60
91.83
93.36
98.13
#N/A
#N/A
#N/A
#N/A
#N/A
#N/A
#N/A

Overall BOD removal rate
#N/A
1
Overall TSSD removal rate
#N/A

Gunpowder Creek WWTP
Instream Monitoring NC0023736
Statistic Upstream Dnstream Effluent
N
Avg
SD
Min
Max
345
8.80
1.24
6.9
14.2
345
8.64
1.21
7.1
13
345
8.36
0.70
6.4
10.4
t-Test: Paired Two Sample for Means
Upstream Dnstream
Mean
Variance
Observations
Pearson Correlation
Hypothesized Mean Difference
df
t Stat
P(T<=t) one -tail
t Critical one -tail
P(T<=t) two -tail
t Critical two -tail
8.803536
1.538601
345
0.969842
0
344
10.22094
6.84E-22
1.649295
1.37E-21
1.966884
8.637159
1.456086
345
Conclusion: downstream DO is significantly lower than upstream DO.
Page 1 of 7 GB Perlmutter 1/11/2021

Gunpowder Creek WWTP
Instream Monitoring NC0023736
Statistic
N
Avg
SD
Min
Max
Upstream
345
17.03
5.39
0.1
23.5
Dnstream
345
17.09
5.29
1.2
24.9
Up - Dn
increase Effluent
345 345
0.06 8.36
1.05 0.70
-5.2 6.4
8.2 10.4
t-Test: Paired Two Sample for Means
Upstream Dnstream
Mean
Variance
Observations
Pearson Correlation
Hypothesized Mean Difference
df
t Stat
P(T<=t) one -tail
t Critical one -tail
P(T<=t) two -tail
t Critical two -tail
17.03285
29.09807
344
0.9808
0
343
-1.05067
0.147076
1.649308
0.294151
1.966904
17.09244
28.02647
344
Conclusion: Downstream Temperature is not statistically different from upstream Temperature.
Page 2 of 7 GB Perlmutter 1/11/2021

Gunpowder Creek WWTP
Instream Monitoring NC0023736
Statistic Upstream Dnstream
N 345 345
Avg 62 72
SD 23 15
Min 35 7
Max 260 118
Effluent
345
244
49
90
387
t-Test: Paired Two Sample for Means
Upstream Dnstream
Mean
Variance
Observations
Pearson Correlation
Hypothesized Mean Difference
df
t Stat
P(T<=t) one -tail
t Critical one -tail
P(T<=t) two -tail
t Critical two -tail
62.00261
540.0021
345
0.098946
0
344
-7.15778
2.49E-12
1.649295
4.99E-12
1.966884
72.17933
226.6191
345
Conclusion: downstream Conductivity is higher than upstream Conductivity.
Page 3 of 7 GB Perlmutter 1/11/2021

Gunpowder Creek WWTP
Instream Monitoring NCO023736
100,000
10,000
1,000
100
U
10
1
Fecal Coliform
• Upstream • Effluent • Dnstream
•
! • ■ Y.►~♦♦ •
■ ••••:11% * 1r ■ • ■ ■ •• ■■
■ ■�
ON' O�� O,O � OLO O�y
�\���ti N\�o�ti h\y��ti
Statistic Upstream Dnstream Effluent
N 345 345 345
Geomean 446 426 18
Min 4 21 1
Max 9400 11000 11300
Gunpowder Creek, 11-55-(1.5)
upstream of WWTP
Page 4 of 7 GB Perlmutter 1/11/2021

Gunpowder Creek WWTP
Instream Monitoring NC0023736
10.0
9.0
8.0
7.0
6.0
5.0
4.0
• Upstream
pH
• Effluent
Lower Std Upper Std
Dnstream
• •
/\f
O
cb9'
C)\���ti y�\ti�ti ��tiy\��ti
Statistic Upstream Dnstream Effluent
N
Avg
SD
Min
Max
345
7.2
0.3
6.1
8.3
345
7.0
0.3
6.0
8.3
345
6.6
0.2
6.0
8.2
t-Test: Paired Two Sample for Means
Upstream Dnstream
Mean
Variance
Observations
Pearson Correlation
Hypothesized Mean Difference
df
t Stat
P(T<=t) one -tail
t Critical one -tail
P(T<=t) two -tail
t Critical two -tail
7.171507
0.096249
345
0.533001
0
344
10.43686
1.23E-22
1.649295
2.45E-22
1.966884
7.01229
0.074014
345
Page 5 of 7 GB Perlmutter 1/11/2021

Gunpowder Creek WWTP
Instream Monitoring NC0023736
16
14
12
10
g
6
4
2
0
Total Nitrogen
• Upstream • Effluent • Dnstream
r
■ ■
• •• •
■••• • � •
•
•
•
■ ■
me■
■
•.
■
•• $
0'. o'°
ti\�'Y °\tip\\
oti oti oti oti° oti° oti oti°
3\°\� °\tip�\ti°\� �o\tip\� h\tip'\� titi\ti\�\tip�
Statistic Upstream Dnstream
N 27 26
Avg 3.9 3.1
SD 2.9 2.1
Min 0.4 0.5
Max 9.1 7.6
Effluent
27
8.2
2.9
3.5
13.9
t-Test: Two -Sample Assuming Unequal Variances
Upstream Dnstream
Mean
Variance
Observations
Hypothesized Mean Difference
df
t Stat
P(T<=t) one -tail
t Critical one -tail
P(T<=t) two -tail
t Critical two -tail
3.868222
8.636588
27
0
48
1.051034
0.149253
1.677224
0.298506
2.010635
3.127192
4.607711
26
Conclusion: no differences were detected between up- and downstream average TN.
Page 6 of 7 GB Perlmutter 1/11/2021

Gunpowder Creek WWTP
Instream Monitoring NC0023736
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
Total Phosphorus
• Upstream • Effluent • Dnstream
NM
� w
•
■
■
■
■ ■
•• •
Y
• ■■ ■
•
y
• •
• ONE Otis O,� Otis O�� O,� Otis 01O Off'
Statistic Upstream Dnstream Effluent
N 27 26 27
Avg 0.18 0.33 2.33
SD 0.16 0.23 1.59
Min 0.02 0.02 0.31
Max 0.54 0.76 6.61
Page 7 of 7 GB Perlmutter 1/11/2021

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 10/02/2C
Page 23 o1 24
Permit: NC0023736 MRs Betweei 0 - 2015 and10 - 2020
Facility Name: % Param Nam( %
Major Minor: %
Region:
County: %
Violation Category:Limit Violation
Subbasin:%
Program Category: NPDES WW
Violation Action: %
PERMIT: NC0023736
FACILITY: City of Lenoir - Gunpowder Creek WWTP
COUNTY: Caldwell
REGION: Asheville
Limit Violation
MONITORING OUTFACE
REPORT
LOCATION
PARAMETER
VIOLATION UNIT OF
FREQUENCY
DATE MEASURE
LIMIT
CALCULATED
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
01-2020 001
01-2020 001
01-2020 001
02-2020 001
03-2020 001
04-2020 001
04-2020 001
05-2020 001
05-2020 001
05-2020 001
06-2020 001
06-2020 001
06-2020 001
06-2020 001
06-2020 001
01-2019 001
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
Chlorine, Total Residual
01/03/20 5 X week
01/07/20 5 X week
01/13/20 5 X week
02/29/20 5 X week
03/24/20 5 X week
04/05/20 5 X week
04/06/20 5 X week
05/03/20 5 X week
05/20/20 5 X week
05/31/20 5 X week
06/04/20 5 X week
06/10/20 5 X week
06/15/20 5 X week
06/16/20 5 X week
06/18/20 5 X week
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
Coliform, Fecal MF, MFC 01/26/19 5 X week #/100m1
Broth, 44.5 C
28 31 10.7 Daily Maximum
Exceeded
28 32 14.3 Daily Maximum
Exceeded
28 30 7.1 Daily Maximum
Exceeded
28 29 3.6 Daily Maximum
Exceeded
28 38 35.7 Daily Maximum
Exceeded
28 40 42.9 Daily Maximum
Exceeded
28 39 39.3 Daily Maximum
Exceeded
28 31 10.7 Daily Maximum
Exceeded
28 42 50 Daily Maximum
Exceeded
28 38 35.7 Daily Maximum
Exceeded
28 47 67.9 Daily Maximum
Exceeded
28 31 10.7 Daily Maximum
Exceeded
28 29 3.6 Daily Maximum
Exceeded
28 44 57.1 Daily Maximum
Exceeded
28 38 35.7 Daily Maximum
Exceeded
400 528.07 32.0 Weekly Geometric Mean
Exceeded
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
No Action, BPJ
Proceed to NOV

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 10/02/2C Page 24 of 24
Permit: NC0023736 MRs Betweei 0 - 2015 and10 - 2020
Facility Name: % Param Nam( %
Major Minor: %
Region: % Violation Category:Limit Violation Program Category: NPDES WW
County: % Subbasin:% Violation Action: %
PERMIT: NC0023736
FACILITY: City of Lenoir - Gunpowder Creek WWTP
COUNTY: Caldwell REGION: Asheville
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED
VALUE Over
VIOLATION TYPE VIOLATION ACTION
03 - 2017 001 Effluent Nitrogen, Ammonia Total (as 03/04/17 5 X week mg/I 12 12.81 6.8 Weekly Average Proceed to NOV
N) - Concentration Exceeded
02-2019 001 Effluent pH 02/26/19 5 X week su 6 5.8 3.3 Daily Minimum Not Proceed to NOD
Reached
06-2020 001 Effluent pH 06/09/20 5 X week su 9 67 644.4 Daily Maximum None
Exceeded
04 - 2019 001 Effluent Solids, Total Suspended - 04/20/19 5 X week mg/I 45 53.5 18.9 Weekly Average Proceed to NOV
Concentration Exceeded

Whole Effluent Toxicity Testing and Self Monitoring Summary
Lawrence Sprinkle-Weaverville WTP NC0085154/001 County: Buncombe Region: ARO Basin: FRB04 Jan Apr Jul Oct SOC JOC:
Ceri7dPF Begin: 12/1/2015 Chr Monit: 90% NonComp: 7Q10: PF: IWC: Freq: Q
J F M A M 1 J A S 0 N D
2016 Pass Pass - Fail - - Pass
2017 Pass - - Pass - Pass - - Pass
2018 Pass - - Pass Pass - - Pass
2019 Pass - - Pass - Pass - - Pass
2020 Pass - - Pass - - Pass - - -
LCP Plastics, Inc. NC0036366/001 County: Guilford Region: WSRO
Ceri7dPF Begin: 3/1/2003 fathead 24h LC50 ac + NonComp: Single 7Q10: 0.00
1 F M A M 1
2016 H - H
2017 - H - - H
2018 - H - - H -
2019 H - - H
2020 - H - - H -
Basin: CPF08 Feb May Aug Nov
PF: NA IWC: 100 Freq: Q P/F
A S 0
H
H
H
H
SOC_JOC:
N
H
H
H
H
Lee S. Dukes WTP (CMUD) NC0084387/001 County: Mecklenburg Region: MRO Basin: CTB33 Jan Apr Jul Oct SOC JOC:
Ceri7dPF Begin: 5/1/2015 Chr Monit: 37% NonComp: 7Q10: PF: IWC: Freq: Q
J F M A M J J A S 0 N D
2016 Pass Pass Pass - Pass
2017 Pass - - Pass - Pass - - Pass -
2018 Pass - - Pass - Pass - - Pass -
2019 Pass - - Pass - - Pass - - Pass -
2020 Pass - - Pass - Pass - -
Lenoir- Gunpowder Creek WWTP NC0023736/001 County: Caldwell Region: ARO
Ceri7dPF Begin: 2/1/2012 chr lim: 52% NonComp: Single 7Q10: 3.0
J F M A M J
2016 Pass Pass
2017 - - Pass Pass
2018 - - Pass Pass >100(P) >100 Pass >100(P)
2019 - - Pass - - Pass
2020 - Pass - - Pass
Lenoir- Lower Creek WWTP NC0023981/001 County: Caldwell
Ceri7dPF Begin: 1/1/2017 chr lim: 44% NonComp: Single
Basin: CTB32 Mar Jun Sep Dec
PF: 2.0 IWC: 52.0 Freq: Q
J A
>100(P)
J F M A M
2016 Pass - Pass
2017 - Pass - - Pass
2018 - Pass - - Pass 62.2(P)
2019 - Pass >100(P) - - Pass
2020 Pass - Pass
Region: ARO
SOC JOC:
S 0 N D
Pass - - Pass
Pass - - Pass
Pass - - Pass
Pass - - Pass
Basin: CTB31 Feb May Aug Nov SOC JOC:
7Q10: 11.75 PF: 6.0
J J
IWC: 44 Freq: Q
A
Pass
Pass
Pass >100(P)
Pass
Pass
S
0 N
Pass
Pass
Pass >100(P)
Pass
Leeend: P= Fathead minnow (Pimohales oromelas). H=No Flow (facility is active). s = Solit test between Certified Labs
Page 67 of 122

NH3/TRC WLA Calculations
Gunpowder Creek WWTP
PermitNo. NC0023736
Prepared By: Gary Perlmutter
Enter Design Flow (MGD):
Enter s7Q10 (cfs):
Enter w7Q10 (cfs):
2
2.9
4
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/I)
IWC (%)
Allowable Conc. (ug/I)
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
2.9
2
3.1
17.0
0
51.67
33
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
w7Q10 (CFS)
200/100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
1.94 Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
2.9
2
3.1
1.0
0.22
51.67
1.7
4
2
3.1
1.8
0.22
43.66
3.8
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
❑ CHECK IF HQW OR ORW WQS
Gunpowder Creek WWTP
IV
NC0023736
001
2.000
Gunpowder Creek
03050101
Apply WS Hardness WQC
7Q10s (cfs)
7Q1Ow (cfs)
30Q2 (cfs)
QA (cfs)
1 Q10s (cfs)
WS-IV
2.90
4.00
5.80
17.40
2.43
Effluent Hardness
Upstream Hardness
25.4 mg/L (Avg)
25 mg/L (Avg)
Combined Hardness Chronic
25.21 mg/L
Combined Hardness Acute
25.22 mg/L
Data Source(s)
❑ CHECK TO APPLY MODEL
Darta are from DMRs with Hardness data provided
by the Permittee upon request. All upstream
hardness data are < 25 mg/L default value; 25 mg/L
used instead.
CHECK WQS NEED ADDITIONAL DATA INPUTS
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Par23
Par24
Name
WQS
Type Chronic Modifier
Acute
PQL Units
Arsenic
Aquactic Life
C
150
FW
340
ug/L
Arsenic
Human Health
Water Supply
C
10
HH/WS
N/A
ug/L
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
0.5936
FW
3.2650
ug/L
Chlorides
Aquatic Life
NC
230
FW
mg/L
Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
yTotal Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium III
Aquatic Life
NC
118.5290
FW
911.7250
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
7.9363
FW
10.5605
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
2.9690
FW
76.2500
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
ng/L
Molybdenum
Human Health
NC
2000
HH
ug/L
Nickel
Aquatic Life
NC
37.4916
FW
337.7505
pg/L
Nickel
Water Supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
0.3010
ug/L
Zinc
Aquatic Life
NC
127.6206
FW
126.6599
ug/L
Chloroform
Water Supply
NC
60
WS
pg/L
Methyl Bromide
Water Supply
NC
too°
WS
pg/L
Nitrate -Nitrogen
Water Supply
NC
10
WS
mg/L
23736 RPA 2020, input
1/11/2021

23736 RPA 2020, input
1/11/2021

REASONABLE POTENTIAL ANALYSIS
H1
Effluent Hardness
Date Data BDL=1/2DL Results
1 12/13/2016 26.9 26.9 Std Dev.
2 4/17/2018 17.4 17.4 Mean
3 10/12/2020 26.4 26.4 C.V. (default)
4 10/13/2020 22.4 22.4 n
5 10/14/2020 28.7 28.7 10th Per value
6 10/15/2020 24.3 24.3 Average Value
7 10/16/2020 31.7 31.7 Max. Value
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
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
H2
Upstream Hardness
4.6195
25.4000
0.6000
7
20.40 mg/L
25.40 mg/L
31.70 mg/L
Date Data BDL=1/2DL Results
1 25 25 Std Dev.
2 Mean
3 C.V.
4 n
5 10th Per value
6 Average Value
7 Max. Value
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
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
N/A
25.0000
0.0000
1
25.00 mg/L
25.00 mg/L
25.00 mg/L
23736 RPA 2020, data
- 1 - 1/11/2021

REASONABLE POTENTIAL ANALYSIS
Par01 & Par02
Arsenic
Date Data BDL=1/2DL Results
1 12/13/2016 < 0.5 0.25 Std Dev.
2 3/16/2017 < 1 0.5 Mean
3 6/13/2017 < 0.5 0.25 C.V.
4 9/12/2017 < 10 5 n
5 12/12/2017 < 1 0.5
6 3/13/2018 < 0.5 0.25 Mult Factor =
7 4/17/2018 < 0.5 0.25 Max. Value
8 6/12/2018 < 1 0.5 Max. Pred Cw
9 9/11/2018 < 1 0.5
10 12/18/2018 0.16 0.16
11 3/12/2019 < 2 1
12 6/11/2019 < 2 1
13 9/17/2019 < 2 1
14 12/10/2019 < 2 1
15 3/10/2020 < 2 1
16 6/9/2020 < 2 1
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
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
1.1473
0.8850
1.2964
16
1.99
5.0 ug/L
10.0 ug/L
23736 RPA 2020, data
- 2 - 1/11/2021

REASONABLE POTENTIAL ANALYSIS
Par03
Beryllium
Date Data BDL=1/2DL
10
10
12/13/2016 < 20
4/17/2018 < 20
Results
Std Dev.
Mean
C.V. (default)
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
Par04
Cadmium
0.0000
10.0000
0.6000
2
3.79
10.00 ug/L
37.90 ug/L
Date Data BDL=1/2DL
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
8/2/2016
9/13/2016
10/18/2016
11/2/2016
12/13/2016
1/17/2017
2/14/2017
3/16/2017
4/13/2017
5/11/2017
6/13/2017
8/1/2017
8/2/2017
8/15/2017
9/12/2017
10/10/2017
11/14/2017
12/12/2017
1/9/2018
2/13/2018
3/13/2018
4/17/2018
5/8/2018
6/12/2018
7/10/2018
8/14/2018
9/11/2018
10/9/2018
11/13/2018
12/18/2018
1/8/2019
2/12/2019
3/12/2019
4/24/2019
5/14/2019
6/11/2019
7/9/2019
8/12/2019
9/17/2019
10/15/2019
11/12/2019
12/10/2019
1/28/2020
2/11/2020
3/10/2020
4/27/2020
5/12/2020
6/9/2020
7/24/2020
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
0.0143
0.1020
0.1400
49
1.01
0.200 ug/L
0.202 ug/L
23736 RPA 2020, data
- 3 - 1/11/2021

REASONABLE POTENTIAL ANALYSIS
Par05
Chlorides
Date Data
12/13/2016 43.7
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points =
58
BDL=1/2DL Results
43.7 Std Dev. N/A
Mean 43.7
C.V. (default) 0.6000
n 1
Mult Factor =
Max. Value
Max. Pred Cw
6.2
43.7 mg/L
270.9 mg/L
Par06
Use "PASTE SI
Values" then "1
. Maximum
points =
Date Data BDL=1/2DL Results
1 Std Dev. NO DATA
2 Mean NO DATA
3 C.V. NO DATA
4 n 0
5
6 Mult Factor = N/A
7 Max. Value N/A
8 Max. Pred Cw N/A
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
Chlorinated Phenolic Compounds
23736 RPA 2020, data
- 4 - 1/11/2021

REASONABLE POTENTIAL ANALYSIS
'ECIAL
COPY"
fata
i8
Par07
Total Phenolic Compounds
ug/L
ug/L
Date Data BDL=1/2DL Results
1 12/16/2015 < 10 5 Std Dev.
2 12/13/2016 < 10 5 Mean
3 7/17/2018 < 10 5 C.V. (default)
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
0.0000
5.0000
0.6000
3
3.00
5.0 ug/L
15.0 ug/L
Par08
Use "PASTE SF
Values" then " ;
. Maximum
points = 5
Date Data BDL=1/2DL Results
1 Std Dev. NO DATA
2 Mean NO DATA
3 C.V. NO DATA
4 n 0
5
6 Mult Factor = N/A
7 Max. Value N/A
8 Max. Pred Cw N/A
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
Chromium III
23736 RPA 2020, data
- 5 - 1 /11 /2021

REASONABLE POTENTIAL ANALYSIS
'ECIAL
COPY"
iata
i8
Par09
Chromium VI
pg/L
pg/L
Date Data BDL=1/2DL Results
1 Std Dev.
2 Mean
3 C.V.
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
Use "PASTE SPECIAL. Par10
Values" then "COPY"
. Maximum data
points = 58
Chromium, Total
NO DATA
NO DATA
NO DATA
0
N/A
N/A pg/L
N/A pg/L
Date Data BDL=1/2DL Results
1 12/13/2016 < 1 0.5 Std Dev. 3.3824
2 3/16/2017 14 14 Mean 1.5938
3 6/13/2017 3 3 C.V. 2.1223
4 9/12/2017 < 1 0.5 n 16
5 12/12/2017 < 1 0.5
6 3/13/2018 2 2 Mult Factor = 2.47
7 4/17/2018 < 1 0.5 Max. Value 14.0
8 6/12/2018 < 1 0.5 Max. Pred Cw 34.6
9 9/11/2018 < 1 0.5
10 12/18/2018 < 1 0.5
11 3/12/2019 < 1 0.5
12 6/11/2019 < 1 0.5
13 9/17/2019 < 1 0.5
14 12/10/2019 < 1 0.5
15 3/10/2020 < 1 0.5
16 6/9/2020 < 1 0.5
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
Use "PASTE SI
Values" then "
. Maximum
points =
23736 RPA 2020, data
- 6 - 1 /11 /2021

REASONABLE POTENTIAL ANALYSIS
'ECIAL
COPY"
lath
18
Pal
Copper
pg/L
pg/L
Date Data BDL=1/2DL Results
1 9/13/2016 16 16 Std Dev.
2 12/13/2016 28 28 Mean
3 3/16/2017 29 29 C.V.
4 6/13/2017 < 1 0.5 n
5 9/12/2017 43 43
6 12/12/2017 < 1 0.5 Mult Factor =
7 3/13/2018 5 5 Max. Value
8 4/17/2018 23 23 Max. Pred Cw
9 6/12/2018 16 16
10 9/11/2018 < 1 0.5
11 12/18/2018 12 12
12 3/12/2019 21 21
13 6/11/2019 < 1 0.5
14 9/17/2019 < 1 0.5
15 12/10/2019 < 1 0.5
16 3/10/2020 10 10
17 6/9/2020 8 8
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
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
12.7393
12.5882
1.0120
17
1.74
43.00 ug/L
74.82 ug/L
Par12
Use "PASTE SI
Cyanide Values" then
. Maximum(
points = 5
Date Data BDL=1/2DL Results
1 8/2/2016 < 8 5 Std Dev. 0.0000
2 9/13/2016 5 5 Mean 5.00
3 10/18/2016 < 5 5 C.V. 0.0000
4 11/2/2016 6 5 n 48
5 12/13/2016 < 5 5
6 1/17/2017 5 5 Mult Factor = 1.00
7 2/14/2017 5 5 Max. Value 5.0
8 3/16/2017 7 5 Max. Pred Cw 5.0
9 4/13/2017 < 5 5
10 5/11/2017 < 5 5
11 6/13/2017 6 5
12 8/1/2017 < 5 5
13 8/2/2017 < 5 5
14 8/15/2017 < 5 5
15 9/12/2017 < 5 5
16 10/10/2017 < 5 5
17 11/14/2017 < 5 5
18 12/12/2017 7 5
19 1/9/2018 < 5 5
20 2/13/2018 5 5
21 3/13/2018 < 5 5
22 4/17/2018 5 5
23 5/8/2018 6 5
24 6/12/2018 < 5 5
25 7/10/2018 < 5 5
26 8/14/2018 < 5 5
27 9/11/2018 < 5 5
28 11/13/2018 < 5 5
29 12/18/2018 < 5 5
30 1/8/2019 < 5 5
31 2/12/2019 < 5 5
32 3/12/2019 < 5 5
33 4/24/2019 6 5
34 5/14/2019 < 5 5
35 6/11/2019 < 5 5
36 7/9/2019 5 5
37 8/12/2019 5 5
38 9/17/2019 < 5 5
39 10/15/2019 5 5
40 11/12/2019 < 5 5
41 12/10/2019 < 5 5
42 1/28/2020 < 5 5
43 2/11/2020 < 5 5
44 3/10/2020 < 5 5
45 4/27/2020 < 5 5
46 5/12/2020 5 5
47 6/9/2020 5 5
48 7/24/2020 < 5 5
49
50
51
52
53
54
55
56
57
58
23736 RPA 2020, data
-7- 1/11/2021

REASONABLE POTENTIAL ANALYSIS
'ECIAL
COPY"
iata
i8
Par13
Fluoride
ug/L
ug/L
Date Data BDL=1/2DL Results
1 Std Dev.
2 Mean
3 C.V.
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Par14
Lead
NO DATA
NO DATA
NO DATA
0
N/A
N/A ug/L
N/A ug/L
Date BDL=1/2DL Results
1 12/13/2016 1.4 1.4 Std Dev.
2 3/16/2017 3.2 3.2 Mean
3 6/13/2017 98 98 C.V.
4 9/12/2017 < 10 5 n
5 12/12/2017 < 1 0.5
6 3/13/2018 0.57 0.57 Mult Factor =
7 4/17/2018 2.3 2.3 Max. Value
8 6/12/2018 < 1 0.5 Max. Pred Cw
9 9/11/2018 < 1 0.5
10 12/18/2018 0.39 0.39
11 3/12/2019 < 0.5 0.25
12 6/11/2019 < 0.5 0.25
13 9/17/2019 < 0.5 0.25
14 12/10/2019 < 0.5 0.25
15 3/10/2020 < 2 1
16 6/9/2020 < 0.5 0.25
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
Use "PASTE SI
Values" then "i
. Maximum(
points = 5
24.2598
7.1631
3.3868
16
3.01
98.000
294.980
23736 RPA 2020, data
- 8 - 1 /11 /2021

REASONABLE POTENTIAL ANALYSIS
'ECIAL
COPY"
iata
i8
Par15
Mercury
ug/L
ug/L
Date Data BDL=1/2DL Results
1 Std Dev.
2 Mean
3 C.V.
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Par16
Molybdenum
NO DATA
NO DATA
NO DATA
0
N/A
N/A ng/L
N/A ng/L
Use "PASTE SF
Values" then " ,
. Maximum
points =
Date Data BDL=1/2DL Results
1 12/13/2016 < 1 0.5 Std Dev. 0.0000
2 3/16/2017 < 1 0.5 Mean 0.5000
3 6/13/2017 < 1 0.5 C.V. 0.0000
4 9/12/2017 < 1 0.5 n 16
5 12/12/2017 < 1 0.5
6 3/13/2018 < 1 0.5 Mult Factor = 1.00
7 4/17/2018 < 1 0.5 Max. Value 0.5
8 6/12/2018 < 1 0.5 Max. Pred Cw 0.5
9 9/11/2018 < 1 0.5
10 12/18/2018 < 1 0.5
11 3/12/2019 < 1 0.5
12 6/11/2019 < 1 0.5
13 9/17/2019 < 1 0.5
14 12/10/2019 < 1 0.5
15 3/10/2020 < 1 0.5
16 6/9/2020 < 1 0.5
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
23736 RPA 2020, data
- 9 - 1 /11 /2021

REASONABLE POTENTIAL ANALYSIS
'ECIAL
COPY"
iata
18
Par17 & Par18
Nickel
ug/L
ug/L
Date Data BDL=1/2DL Results
1 12/13/2016 < 1 0.5 Std Dev.
2 3/16/2017 < 1 0.5 Mean
3 6/13/2017 < 1 0.5 C.V.
4 9/12/2017 < 1 0.5 n
5 12/12/2017 < 1 0.5
6 3/13/2018 < 1 0.5 Mult Factor =
7 4/17/2018 < 1 0.5 Max. Value
8 6/12/2018 < 1 0.5 Max. Pred Cw
9 9/11/2018 < 1 0.5
10 12/18/2018 < 1 0.5
11 3/12/2019 < 1 0.5
12 6/11/2019 < 1 0.5
13 9/17/2019 < 1 0.5
14 12/10/2019 < 1 0.5
15 3/10/2020 < 1 0.5
16 6/9/2020 < 1 0.5
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
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
Par19
Selenium
0.0000
0.5000
0.0000
16
1.00
0.5 pg/L
0.5 pg/L
Date Data BDL=1/2DL Results
1 12/13/2016 < 0.5 0.25 Std Dev.
2 3/16/2017 < 1 0.5 Mean
3 6/13/2017 < 0.5 0.25 C.V.
4 9/12/2017 < 10 5 n
5 12/12/2017 < 1 0.5
6 3/13/2018 < 0.5 0.25 MultFactor=
7 4/17/2018 < 0.5 0.25 Max. Value
8 6/12/2018 < 1 0.5 Max. Pred Cw
9 9/11/2018 < 1 0.5
10 12/18/2018 < 0.5 0.25
11 3/12/2019 < 1 0.5
12 6/11/2019 < 1 0.5
13 9/17/2019 < 1 0.5
14 12/10/2019 < 1 0.5
15 3/10/2020 < 1 0.5
16 6/9/2020 < 1 0.5
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
23736 RPA 2020, data
- 10 - 1/11/2021

REASONABLE POTENTIAL ANALYSIS
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Par20
Silver
1.1519
0.7031
1.6382
16
2.21
5.0 ug/L
11.1 ug/L
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Date Data BDL=1/2DL Results
1 9/13/2016 < 1 0.5 Std Dev. 0.8489
2 12/13/2016 < 1 0.5 Mean 0.7059
3 3/16/2017 4 4 C.V. 1.2026
4 6/13/2017 < 1 0.5 n 17
5 9/12/2017 < 1 0.5
6 12/12/2017 < 1 0.5 Mult Factor = 1.86
7 3/13/2018 < 1 0.5 Max. Value 4.000 ug/L
8 4/17/2018 < 1 0.5 Max. Pred Cw 7.440 ug/L
9 6/12/2018 < 1 0.5
10 9/11/2018 < 1 0.5
11 12/18/2018 < 1 0.5
12 3/12/2019 < 1 0.5
13 6/11/2019 < 1 0.5
14 9/17/2019 < 1 0.5
15 12/10/2019 < 1 0.5
16 3/10/2020 < 1 0.5
17 6/9/2020 < 1 0.5
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
Par21
Zinc
Date Data BDL=1/2DL Results
1 9/13/2016 105 105 Std Dev.
2 12/13/2016 139 139 Mean
3 3/16/2017 82 82 C.V.
4 6/13/2017 79 79 n
5 9/12/2017 507 507
6 12/12/2017 < 1 0.5 Mult Factor =
7 3/13/2018 41 41 Max. Value
8 4/17/2018 58 58 Max. Pred Cw
9 6/12/2018 88 88
10 9/11/2018 < 1 0.5
11 12/18/2018 5 5
12 3/12/2019 15 15
13 6/11/2019 < 1 0.5
14 9/17/2019 118 118
15 12/10/2019 61 61
16 3/10/2020 117 117
17 6/9/2020 134 134
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
23736 RPA 2020, data
- 11 - 1/11/2021

REASONABLE POTENTIAL ANALYSIS
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Par22
Chloroform
117.5997
91.2059
1.2894
17
1.92
507.0 ug/L
973.4 ug/L
Date Data BDL=1/2DL Results
1 12/16/2015 6.77 6.77 Std Dev.
2 12/13/2016 11.6 11.6 Mean
3 4/7/2018 6.35 6.35 C.V. (default)
4 n
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
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Par23
Methyl Bromide
2.9174
8.2400
0.6000
3
Mult Factor = 3.00
Max. Value 11.600000 pg/L
Max. Pred Cw 34.800000 pg/L
Date Data BDL=1/2DL
1 12/16/2015 < 5 2.5
2 12/13/2016 6.25 6.25
3 4/7/2018 < 5 2.5
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
23736 RPA 2020, data
- 12 - 1 /11 /2021

REASONABLE POTENTIAL ANALYSIS
e
Results
Std Dev.
Mean
C.V. (default)
n
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
Par24
Nitrate -Nitrogen
2.1651
3.7500
0.6000
3
Mult Factor = 3.00
Max. Value 6.250000 pg/L
Max. Pred Cw 18.750000 pg/L
Date Data BDL=1/2DL Results
1 Std Dev.
2 Mean
3 C.V.
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
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
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
Par25
Total Nitrogen
NO DATA
NO DATA
NO DATA
0
N/A
N/A mg/L
N/A mg/L
Date Data BDL=1/2DL
1 8/2/2016 6.23 6.23
2 9/13/2016 6.55 6.55
3 10/18/2016 4.83 4.83
4 11/2/2016 6.97 6.97
5 12/13/2016 3.6 3.6
6 1/17/2017 7.09 7.09
7 2/14/2017 6.43 6.43
8 3/16/2017 11.04 11.04
9 4/13/2017 12.6 12.6
10 5/11/2017 10.9 10.9
11 6/13/2017 11.9 11.9
12 8/1/2017 13.9 13.9
13 8/2/2017 13.89 13.89
14 8/15/2017 10.58 10.58
15 9/12/2017 11.58 11.58
16 10/10/2017 13.2 13.2
17 11/14/2017 11.47 11.47
18 12/12/2017 9.9 9.9
19 1/9/2018 11.8 11.8
20 2/13/2018 9.86 9.86
21 3/13/2018 9.63 9.63
22 4/17/2018 8.57 8.57
23 5/8/2018 9.8 9.8
24 6/12/2018 9.92 9.92
25 7/10/2018 9.33 9.33
26 8/14/2018 9.33 9.33
27 9/11/2018 9.1 9.1
28 10/9/2018 10.58 10.58
29 11/13/2018 7.7 7.7
30 12/18/2018 8.97 8.97
31 1/8/2019 8.26 8.26
32 2/12/2019 4.83 4.83
33 3/12/2019 4.4 4.4
34 4/24/2019 3.81 3.81
35 5/14/2019 4.95 4.95
36 6/12/2019 3.86 3.86
37 7/9/2019 4.27 4.27
38 8/12/2019 4.4 4.4
39 9/17/2019 5.46 5.46
40 10/15/2019 6 6
41 11/12/2019 4.54 4.54
42 12/10/2019 3.58 3.58
43 1/28/2020 3.59 3.59
44 2/11/2020 4.58 4.58
45 3/10/2020 4.64 4.64
46 4/27/2020 4.09 4.09
47 5/12/2020 4.83 4.83
48 6/9/2020 5.77 5.77
49 7/24/2020 3.49 3.49
50
51
52
53
54
55
56
57
58
23736 RPA 2020, data
- 13 - 1/11/2021

REASONABLE POTENTIAL ANALYSIS
Results
Std Dev.
Mean
C.V.
n
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
3.1920
7.6857
0.4153
49
Mult Factor = 1.03
Max. Value 13.900000 mg/L
Max. Pred Cw 14.317000 mg/L
23736 RPA 2020, data
- 14 - 1 /11 /2021

Gunpowder Creek WWTP
NC0023736
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw (MGD) = 2.0000
1Q1OS (cfs) = 2.43
7Q1OS (cfs) = 2.90
7Q1OW (cfs) = 4.00
30Q2 (cfs) = 5.80
Avg. Stream Flow, QA (cfs) = 17.40
Receiving Stream: Gunpowder Creek HUC 03050101
WWTP/WTP Class: IV
IWC% @ 1Q1OS = 56.05786618
IWC% @ 7Q1OS = 51.66666667
IWC% @ 7Q1OW = 43.66197183
IWC% @ 30Q2 = 34.83146067
IW%C @ QA = 15.12195122
Stream Class: WS-IV
Outfall 001
Qw = 2 MGD
COMBINED HARDNESS (mg/L)
Acute = 25.22 mg/L
Chronic = 25.21 mg/L
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS WATER SUPPLY
Effluent Hard: 0 value > 100 mg/L
Effluent Hard Avg = 25.4 mg/L
PARAMETER
TYPE
NC STANDARDS OR EPA CRITERIA
J
a
cn
F
n
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
Applied Chronic Standard Acute
tl # Det. Max Pred Cw Allowable Cw
Arsenic
Arsenic
C
C
150 FW(7Q10s) 340
10 HH/WS(Qavg)
ug/L
ug/L
16 1
10.0
Acute (FW): 606.5
__ _ _ ______________________________________
Chronic (FW): 290.3
No value > Allowable Cw _ _
Chronic (HH) 66.1
No value > Allowable Cw
1
_ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Beryllium
NC
6.5 FW(7Q10s) 65
ug/L
2 0
Note: n < 9
Limited data set
37.90
C.V. (default)
NO DETECTS
Acute: 115.95
____ __________________________
Chronic: 12.58
Max MDL = 20
No detects at < 20 ug/L; PQL is 5 ug/L. Notify to test
and report to lower level.
Cadmium
NC
0.5936 FW(7Q10s) 3.2650
ug/L
49 1
0.202
Acute: 5.824
__ _ _ ______ _____
Chronic: 1.149
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Chlorides
NC
230 FW(7Q10s)
mg/L
1 1
Note: n < 9
Limited data set
270.9
C.V. (default)
Acute: NO WQS
____ _____________
Chronic: 445.2
No value > Allowable Cw
___________
No RP (Limited data, n < 8); no monitoring required
Chlorinated Phenolic Compounds
NC
1 A(30Q2)
ug/L
0 0
N/A
Acute: NO WQS
__ _ _ ____________
Chronic: 2.9
_ _ _ _ _ _ _ _ _ _ _ _ _ _
Total Phenols MDL < Chlorinated Phenol Allowable
Cw - apply quarterly monitoring.
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
3 0
Note: n < 9
Limited data set
15.0
C.V. (default)
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _ _ _
Chronic: 861.3
Max MDL = 10
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Chromium III
NC
118.5290 FW(7Q10s) 911.7250
µg/L
0 0
N/A
Acute: 1,626.4
-- Chronic: -----229.4--------------------------------
Chromium VI
NC
11 FW(7Q10s) 16
µg/L
0 0
N/A
Acute: 28.5
--------------------------------
Chromium, Total
NC
µg/L
Tot Cr value(s)
16 3
> 5 but < Cr VI
34.6
Allowable Cw
Max reported value = 14
b: Maintain Total Chromium monitoring or defer to
LMTP if any Total Chromium sample is >_ 50% of but
< the Chromium VI Allowable Cw.
Copper
NC
7.9363 FW(7Q10s) 10.5605
ug/L
17 11
74.82
Acute: 18.84
RP shown - apply Monthly Monitoring with Limit
Page 1 of 3
23736 RPA 2020, rpa
1 /11 /2021

Gunpowder Creek WWTP
NC0023736
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
Outfall 001
Qw = 2 MGD
Chronic: 15.36
7 value(s) > Allowable Cw
----------------------- - -
Cyanide
NC
5 FW(7Q10s) 22
10
ug/L
48 16
5.0__________________
Acute: 39.2
Chronic: 9.7
No value > Allowable Cw
No RP, Predicted Max < 10 ug/L, considered the
compliance level.
Fluoride
NC
1800 FW(7Q10s)
ug/L
0 0
N/A
Acute: NO WQS
-_ _ ---_ _
-Chronic: --------------------------------
3,483.9
Lead
NC
2.9690 FW(7Q10s) 76.2500
ug/L
16 6
294.980
Acute: 136.020
Inc' 5.746
I value(s) > Allowable Cw
RP shown - apply Monthly Monitoring with Limit
Mercury
NC
12 FW(7Q10s)
0.5
ng/L
0 0
N/A
Acute: NO WQS
-_ _ ----- _ _
-Chronic: --------------------------------
23.2
Molybdenum
NC
2000 HH(7Q10s)
ug/L
16 0
0.5
NO DETECTS
Acute: NO WQS
____ __________________________
Chronic: 3,871.0
Max MDL = 1
No detects at < 1 ug/L. No monitoring or limits
required.
Nickel
Nickel
NC
NC
37.4916 FW(7Q10s) 337.7505
25.0000 WS(7Q10s)
µg/L
µg/L
16 0
0.5
NO DETECTS
Acute (FW): 602.5
__ _ _ - _ _
Chronic (FW): 72.6
Max MDL _____________
Chronic (WS):48.4
Max MDL = 1
- - -
___
No detects at < 1 ug/L. No monitoring or limits
required.
Selenium
NC
5 FW(7Q10s) 56
ug/L
16 0
11.1
NO DETECTS
Acute: 99.9
_______________________________
Chronic: 9.7
Max MDL = 10
No detects at < 10, < 1, < 0.5 ug/L. No monitoring or
limits required.
Silver
NC
0.06 FW(7Q10s) 0.3010
ug/L
17 1
7.440
Acute: 0.537
____ _________________________
Chronic: 0.116
17 value(s) > Allowable Cw
RP shown based on one detection of 4 ug/L in 2017;
no limit or monitoring required based on BPJ
Zinc
NC
127.6206 FW(7Q10s) 126.6599
ug/L
17 14
973.4
Acute: 225.9
___ ______________
Chronic: 247.0
1 value(s) > Allowable Cw
_____
RP shown - apply Monthly Monitoring with Limit
Chloroform
NC
60 WS(7Q10s)
µg/L
3 3
Note: n < 9
Limited data set
34.80000
C.V. (default)
Acute: NO WQS
___ ____________________
Chronic: 116.12903
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Methyl Bromide
NC
1000 WS(7Q10s)
µg/L
3 1
Note: n < 9
Limited data set
18.75000
C.V. (default)
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _
Chronic: 1935.48387
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Nitrate -Nitrogen
NC
10 WS(7Q10s)
mg/L
0 0
N/A
Acute: NO WQS
____ ________________________
Chronic: 19.35484
Total Nitrogen Predicted Max < Allowable Cw - No
Monitoring required.
Acute: NO WQS
Page 2 of 3
23736 RPA 2020, rpa
1 /11 /2021

Gunpowder Creek WWTP
NC0023736
Total Nitrogen
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
NC FW(???)
mg/L
49 49 1 14.31700
ric:
No Chvalue on > Allowable Cw
Outfall 001
Qw = 2 MGD
23736 RPA 2020, rpa
Page 3 of 3 1/11/2021

FACILITY: Gunpowder Creek WWTP Outfall 001
NPDES PERMIT: NC0023736
Dissolved to Total Metal Calculator
In accordance with Federal Regulations, permit limitations must be written as Total Metals per 40 CFR 122.45(c)
Receiving
Stream
summer
7Q10 (CFS)
Receiving
Stream
summer 7Q10
(MGD)
Rec. Stream
1Q10
[MGD]
NPDES
Flow Limit
[MGD]
Total Suspended
Solids
-Fixed Value-
(mg/L)
Combined
Hardness
chronic
(mg/L)
Combined
Hardness
Acute
(mg/L)
Instream
Wastewater
Concentration
Chronic)
Instream
Wastewater
Concentration
(Acute)
UpstreamHardness
Hardness
Average (mg/L)
Effluent
Average
(mg/L)
2.9000
1.8710
1.5677
2.0000
10
25.207
25.224
51.6667
56.0579
25
25.4
PARAMETER
Cadmium (d)
Cd -Trout streams
Dissolved Metals Criteria
after applying hardness
equation
Chronic
Acute
[ug/I]
0.15
0.15
[ug/I]
0.82
0.51
US EPA
Translators- using
Default Partition
Coefficients
(streams)
0.252
0.252
Total Metal Criteria Total Metal
= Dissolved Metal+Translator
Chronic
Acute
Upstream Hard Avg (mg/L) =
25
EFF Hard Avg (mg/L) = 25.4
[ug/I]
0.59
0.59
[ug/I]
3.26
2.03
Chromium III (d)(h)
Chromium VI (d)
Chromium, Total (t)
Copper (d)(h)
Lead (d)(h)
24
11
2.8
0.55
184
16
3.7
14
0.202
1.000
0.348
0.184
118.53
11.00
N/A
7.94
2.97
911.72
16.00
N/A
10.56
76.25
Nickel (d)(h
Silver (d)(h,acute)
Zinc (d)(h)
16
0.06
37
146
0.30
36
0.432
1.000
0.288
37.49
0.06
127.62
337.75
0.30
126.66
Beryllium 6.5
Arsenic (d) 150
65
340
1.000
1..16 000
6.5
150
COMMENTS (identify parameters to PERCS Branch to maintain in facility's LTMP/STMP):
(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 pg/L which is Total Recoverable metal standard.

Permit No. NC0023736
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 Quality Standards/Aquatic Life Protection
Parameter
Acute FW, µg/1
(Dissolved)
Chronic FW, µg/1
(Dissolved)
Acute SW, µg/1
(Dissolved)
Chronic SW, µg/1
(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
2B.0200 (e.g., arsenic at 10 µg/1 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[ln 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[In 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[In hardness]-1.460}
Lead, Chronic
WER*{1.46203-[ln hardness](0.145712)} • e^{1.273[In 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. NC0023736
Silver, Acute
WER*0.85 • e^{1.72[In 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[In 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.
1. To perform a RPA on the Freshwater hardness -dependent metals the Permit Writer compiles the
following information:
• Critical low flow of the receiving stream, 7Q10 (the spreadsheet automatically calculates
the 1Q10 using the formula 1Q10 = 0.843 (s7Q10, 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. NC0023736
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) + (s7Q10, cfs *Avg. Upstream Hardness, mg/L)
(Permitted Flow, cfs + s7Q10, cfs)
The Combined Hardness for acute is the same but the calculation uses the 1 Q 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(1+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 = (s7Q10 + Qw) (Cwqs) — (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 s7Q10)
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 s7Q10 may be incorporated as applicable:
1 Q 10 = used in the equation to protect aquatic life from acute toxicity
Page 3 of 4

Permit No. NC0023736
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.
8. 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
(Total as CaCO3)
25.4
Data provided by Permittee
Average Upstream Hardness, mg/L
(Total as CaCO3)
25
Default value (Data provided by
Permittee were all < 25 mg/L)
7Q10 summer (cfs)
2.9
Reported in previous permit Fact
Sheet
1Q10 (cfs)
2.43
Calculated in RPA spreadsheet
Permitted Flow (MGD)
2.0
Design flow
Date: November 20, 2020
Permit Writer: Ga Perlmutter
Page 4 of 4

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
blueridgela [e-mail]
Client :
Attention
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Hardness
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
l 6-Oct-20
30-Oct-20
14-Oct-20
BRL-2020-0692
LS1D-2020-02802
101420H-GCUP
Result MQL
19.4 0,03
Reported By:
Gc,41 Vdf'1
Unit Method
Analysis
Time
Analysis
Date Analyst
rng/1 2340B 1997 10:29 10/30/2020 KCJ
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 5 of 11

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Hardness
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
16-Oct-20
30-Oct-20
12-Oct-20
BRL-2020-0692
LSID-2020-02799
101220H-GEFF
Result MQL
26.4 0.03
Reported 13y:
Unit
E:-If toil 7--
Analysis
Method Tim e
Analysis
Date Analyst
mgll 2340B 1997 10:23 10/30/2020 KCJ
S. J. JohnS'6ti, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 2 of 11

lue Ridge Labs
PU Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Hardness
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
16-Oct-20
30-Oct-20
12-Oct-20
BRL-2020-0692
LSID-2020-02798
101220H-GCUP
Result
16.2
Reported 13y:
(A?
Analysis Analysis
MQL Unit Method Time
0.03 mgil 2340B 1997 10:21 10/30/2020
F
4i
S. J. Johnson, D.R. Wessinger
4' Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 1 of 11
Date Analyst
KCJ

Blue Bulge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
blueridgelabslenoir©gmail.com
Client :
Attention:
Date Received:
Report Date:
Sample Date:
Lab Sample ID:
Client Sample ID:
Parameter
Hardness
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
16-Oct-20
30-Oct-20
13-Oct-20
I3RI, 2020-0692
LSID-2020-02801
101320H-GEFF
Result
MQL Unit Method
22.4 0.03 mg/I 2340E 1997
Reported By:
o
Analysis
Time
Analysis
Date Analyst
10:27 10/30/2020 KCJ
S. J. Joson, D.R. Wessinger
Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 4 of 11

Blue Ridge Labs
pp Vox 2940
Lerrdrr, NC 28645
828-728-0149
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRI, #:
1-,ab Sample ID:
Client Sample ID:
Parameter
Hardness
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
16-Oct-20
30-Oct-20
13-Oct-20
BRL-2020-0692
LSTD-2020-02800
101320H-GCUP
Result MQL
14.8 0.03
Reported 13y:
blueridgela bslenoir@gma il.coni
6 (Jo
Unit Method
mg/l 234013 1997
Analysis
Time
10:2.5
AnalYsis
Date
10(30/:2020
S. J. Johnsen, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 3 of 11
Analyst
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
16-Oct-20
17-Nov-20
14-Oct-20
BRL-2020-0692
LSID-2020-02803
101420H-GEFF
Parameter Result
GEFF 10/14
Reissued due to typographical error.
Analysis Analysis
MQL Unit Method Time
Hardness 28.7 0.03 mg/1 2340B 1997 10:31
Reported By:
S..l. nson, l).12. Wessinger
Date Analyst
10/30/2020 KCJ
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 1 of 1

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
16-Oct-20
05-Nov-20
15-Oct-20
BRL-2020-0692
LS1D-2020-02804
101520H-GCUP
Parameter
Hardness
Result MQL
Gup 10/15
Reissued due to typographical error on COC.
Analysis Analysis
Unit Method Time
15.7 0.03
Reported By:
Date Analyst
mg/1 2340E 1997 10:33 10/30/2020 KC/
S. ohnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 7 of 11

Blue Ridge Labs
P4 Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
Lab Sample ID:
Client Sample ID:
Parameter
Hardness
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
16-Oct-20
05-Nov-20
15-Oct-20
BRL-2020-0692
LSID-2020-02805
101520H-GEFF
Result IVIQL
24.3 0.03
Reported By:
GEFF 10/15
Reissued due to typographical error on COC.
Analysis Analysis
Unit Method Time Date Analyst
mg/1 2340B 1997 10:35 10/30/2020 KCJ
S. 'l ()boson, D.R. Wessinger
Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 8 of 11

Blue Ridge Labs
Pa Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Hardness
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
16-Oct-20
30-Oct-20
16-Oct-20
BRL-2020-0692
LSCD-2020-02807
101620H-GEFF
Result MQL
31.7 0.03
Reported By:
Unit Method
mgll 2340B 1997
6% 130(0
Analysis
Time
Analysis
Date Analyst
10:39 10/30/2020
* Concentrations are below Minimum Quantification Limitexcept where noted.
NC Laboratory Certificate No. 275
Page 10 of 11
KGi

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
Date Received: 16-Oct-20
Report Date: 30-Oct-20
Sample Date: 16-Oct-20
BRL #: BRL-2020-0692
Lab Sample ID: LSID-20204J2806
Client Sample ID: 101620H-GCUP
up 00
Analysis Analysis
Parameter Result MQL Unit Method Time [)ate Amalysl
Hardness 20.2 0.03 mg/1 2340B 1997 10:37 10/30/2020 KCJ
Reported By:
S. ' nson, D.R. Wessinger
'" Concentrations are below Minimum Quantification 1irimit except where noted.
NC Laboratory Certificate No. 275
Page 9 of 11

1/11/21 WQS = 12 ng/L
Facility Name City of Lenoir - Gunpowder Cr WWTP/NC0023736
/Permit No. :
Total Mercury 1631E PQL = 0.5 ng/L 7Q10s =
Date Modifier Data Entry Value Permitted Flow =
12/13/16 < 1
12/19/16 < 1
3/16/17 2.3
6/13/17 < 1
9/12/17 < 1
12/12/17 < 1
3/13/18 < 1
4/17/18 < 1
6/12/18 < 1
9/11/18 1.1
12/21/18 < 1
3/12/19 < 1
6/11/19 < 1
9/17/19 < 1
12/10/19 3.1
3/10/20 < 1
6/9/20 1.2
MERCURY WQBEL/TBEL EVALUATION V:2013-6
No Limit Required
MMP Required
0.5
0.5
2.3
0.5
0.5
0.5
0.5
0.5
0.5
1.1
0.5
0.5
0.5
0.5
3.1
0.5
1.2
2.900
2.000
cfs
WQBEL =
23.23 ng/L
47 ng/L
0.5 ng/L - Annual Average for 2016
1.0 ng/L - Annual Average for 2017
0.6 ng/L - Annual Average for 2018
1.2 ng/L - Annual Average for 2019
0.9 ng/L - Annual Average for 2020

City of Lenoir - Gunpowder Cr WWTP/NC0023736
Mercury Data Statistics (Method 1631E)
2016
2017
2018
2019
2020
# of Samples
2
4
5
4
2
Annual Average, ng/L
0.5
1.0
0.6
1.2
0.9
Maximum Value, ng/L
0.50
2.30
1.10
3.10
1.20
TBEL, ng/L
47
WQBEL, ng/L
23.2

INVOICE
Blue Ridge Labs, Inc.
Invoice # 2017- 0707
Date: 9/29/2017
P.O. Box 2940
Lenoir. NC 28645
Phone: [phone] Fax: [phone]
Client:
Citv of Lenoir
P. O. Box 958
Bill To:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645 Lenoir, NC 28645
PO NUMBER LAB REF. ID TERMS LAB CONTACT
731 Net 10 Days Steve Johnson
PROJECT NAME
Sample Name 091117-GfN, 091117-GIM, 091117-GICN, 091217-GEM, 091217-GEN, 091217-GECN, 091217-GUN,
091217-GUN, 091217-GDN, 091217-GDN
TARGET NAME QUANTITY UNIT PRICE EXTENDED PRICE
Ag by ICP 2 $12.00 $24.00
Cd bu ICP 2 $12.00 $24.00
Cr by ICP 2 $12.00 $24.00
Cu by ICP 2 $12.00 $24.00
Cyanide 2 $35.00 $70. 00
Hg by Cold Vapor 2 $35.00 $70.00
Mo by ICP 2 $12.00 $24.00
Ni by ICP 2 $12.00 $24.00
Total Nitrogen 4 $40.00 $160.00
Total Phosphorus 4 $20.00 $80.00
Zn by ICP 2 $12.00 $24.00
Please Remit: $548.00
Upon submission of samples, buyer agrees that invoices are due at time of delivery. Open accounts are due 20 days following
the invoice date. A finance charge of 1.5 % per month will be imposed on all past -due accounts. When relinquishing samples to
Blue Ridge Labs, buyer agrees to pay all collection and attorneys fees if the account becomes deliquent. Blue Ridge Labs
reserves the right to deny all QC and support documentation for all open accounts which are greater than 60 days. Additionally,
Blue Ridge Labs also reserves the right to inform the appropriate local, state or federal agency that all support documentation
is not available due to the failure to the above invoice teens. Data used for compliance purposes will be rendered invalid for
reporting until the account is cleared.

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
11-Sep-07
BRL-2017-0731
LSID-2017-02761
Client Sample ID: 091117-GIN
Parameter
N2+N3
TKN
Result MQL Unit
Analysis Analysis
Method Time Date
Reported By:
3.96 0.08 mg/I SM19 4500-N 19:56 9/24/2017
13.7 0.5 mg/I SM19 4500-N 16:01 9/15/2017
S. J. ohnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 1 of 10
Analyst
KCJ
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample DI:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
11-Sep-17
BRL-2017-0731
LSID-2017-02762
091117-GIM
Parameter
Ag
Cd
Cr
Cu
Mo
Ni
Total Phosphorus
Zn
Hg
Result MQL
Unit Method
Analysis Analysis
Time Date Analyst
Reported By:
* 0.001
* 0.0002
* 0.001
0.043 0.001
* 0.001
* 0.001
2.41 0.02
0.106 0.001
* 0.0001
mg/I 200.7 1994 20:14 9/27/2017 KCJ
mg/I 200.7 1994 20:14 9/27/2017 KCJ
mg/l 200.7 1994 20:14 9/27/2017 KCJ
mg/1 200.7 1994 20:14 9/27/2017 KCJ
mg/1 200.7 1994 20:14 9/27/2017 KCJ
mg/I 200.7 1994 20:14 9/27/2017 KCJ
mg/1 200.7 1994 20:14 9/27/2017 KCJ
mg/I 200.7 1994 20:14 9/27/2017 KCJ
mg/l 245.1 1994 16:20 9/22/2017 KCJ
S. J. nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 2 of 10

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Cyanide
City of Lenoir
P.O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
11-Sep-17
BRL-2017-0731
LSID-2017-02763
091117-GICN
Reported By:
Result MQL
0.007 0.005
Analysis Analysis
Unit Method Time Date Analyst
KCJ
mg/I 4500-CN-E 1 17:45 9/25/2017
S. J.' ' h neon, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 3 of 10

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Ag
Cd
Cr
Cu
Mo
Ni
Total Phosphorus
Zn
Hg
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
12-Sep-17
BRL-2017-0731
LSID-2017-02764
091217-GEM
Reported By:
Analysis Analysis
Result MQL Unit Method Time Date Analyst
* 0.001 mg/1 200.7 1994 20:16 9/27/2017 KCJ
* 0.0002 mg/1 200.7 1994 20:16 9/27/2017 KCJ
* 0.001 mg/I 200.7 1994 20:16 9/27/2017 KCJ
0.051 0.001 mg/I 200.7 1994 20:16 9/27/2017 KCJ
* 0.001 mg/I 200.7 1994 20:16 9/27/2017 KCJ
* 0.001 mg/1 200.7 1994 20:16 9/27/2017 KC]
2.65 0.02 mg/I 200.7 1994 20:16 9/27/2017 KCJ
0.507 0.001 mg/I 200.7 1994 20:16 9/27/2017 KCJ
* 0.0001 mg/I 245.1 1994 16:22 9/22/2017 KCJ
Arroir
�� -
S. J. Idi oson, D.R. Wessinger
* Concentrations are below Minimum Quantification tidilt except where noted.
NC Laboratory Certificate No. 275
Page 4 of 10

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
N2+N3
TKN
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
12-Sep-17
BRL-2017-0731
LSID-2017-02765
091217-GEN
Reported By:
Result MQL
2.62 0.08
8.96 0.5
Analysis Analysis
Unit Method Time Date
mg/1 SM19 4500-N 19:58 9/24/2017
mg/1 SM194500-N 16:55 9/15/2017
S. Jfir nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 5 of 10
Analyst
KCJ
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Cyanide
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
12-Sep-17
BRL-2017-0731
LSID-2017-02766
091217-GECN
Reported By:
Result MQL
* 0.005
Unit Method
------ ------
mg/I 4500-CN-E 1 17:47 9.125/2017
S. J nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 6 of 10
Analysis Analysis
Time Date Analyst
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
N2+N3
TKN
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
12-Sep-17
BRL-2017-0731
LSID-2017-02767
091217-GUN
Result
1.33
6.02
Reported By:
MQL Unit Method
0.08 mg/I SM19 4500-N
0.5 mg/I SM19 4500-N
`.'Johnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page7of 10
Analysis Analysis
Time Date Analyst
20:01 9/24/2017 KCJ
KCJ
17:39 9/15/2017

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
21-Sep-17
BRL-2017-0731
LSID-2017-02768
091217-GUN
Parameter Result MQL
Total Phosphorus 0.060
Reported By:
0.02
Unit Method
mg/1 200.7 1994 20:20 9/27/2017
Analysis
Time
S. J. Ji .son, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 8 of 10
Analysis
Date Analyst
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
12-Sep-17
BRL-2017-0731
LSID-2017-02769
091217-GDN
Parameter
N2+N3
TKN
Reported By:
Analysis
Result MQL Unit Method Time
0.71 0.08 mg/I SM194500-N 20:01
4.90 0.5 mg/1 SM194500-N 18:10
S. J. J (ton, D.R. Wessinger
Analysis
Date Analyst
9/24/2017
9/15/2017
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 9 of 10
KCJ
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
12-Sep-17
29-Sep-17
12-Sep-17
BRL-2017-0731
LS1D-2017-02770
091217-GDN
Parameter
Total Phosphorus
Reported By:
Result MQL Unit Method
* 0.02 mg/1 200.7 1994
S. J.
nson, D.R. Wessinger
Analysis Analysis
Time Date Analyst
22:02 9/27/2017 KCJ
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 10 of 10

13(
0
a
L
i�
Analysis Requested
21- q.
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,(s-
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IN':.

INVOICE
Blue Ridge Labs, Inc.
Invoice # 2017- 0163
Date: 3/31/2017
P.O. Box 2940
Lenoir. NC 28645
Phone: [phone] Fax: [phone]
Client:
Citv of Lenoir
P. O. Box 958
Lenoir, NC 28645
PO NUMBER LAB REF. ID TERMS
155
Bill To:
LAB CONTACT
Net 10 Days Steve Johnson
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
PROJECT NAME
Sample Name 031617-LEFF, 031617-GEFF,031617-GD, 031617-GUP, 031517-GINF
TARGET NAME
Ag by ICP
Cd bu ICP
Cr by ICP
Cu by ICP
Cyanide
Ng by Cold Vapor
Mo by ICP
Ni by ICP
Total Nitrogen
Total Phosphorus
Zn by ICP
QUANTITY UNIT PRICE EXTENDED PRICE
3
3
2
3
2
1
2
2
5
5
2
$12.00 $36.00
$12.00 $36.00
$12.00 $24.00
$12.00 $36.00
$35.00 $70. 00
$35.00 $35.00
$12.00 $24.00
$12.00 $24.00
$40.00 5200.00
$20.00 $100.00
$12.00 $24.00
$609.00
Please Remit:
Upon submission of samples, buyer agrees that invoices are due at time of delivery. Open accounts are due 20 days following
the invoice date. A finance charge of 1.5 % per month will be imposed on all past -due accounts. When relinquishing samples to
Blue Ridge Labs, buyer agrees to pay all collection and attorneys fees if the account becomes deliquent. Blue Ridge Labs
reserves the right to deny all QC and support documentation for all open accounts which are greater than 60 days. Additionally,
Blue Ridge Labs also reserves the right to inform the appropriate local, state or federal agency that all support documentation
is not available due to the failure to the above invoice terms. Data used for compliance purposes will be rendered invalid for
reporting until the account is cleared.
1

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Ag
Cd
Cu
Total Phosphorus
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Mar-17
31-Mar-17
16-Mar-17
BRL-2017-0155
LSID-2017-00689
031617-TP-LEFF
Result MQL
Unit
Analysis Analysis
Method Time Date Analyst
Reported By:
* 0.001 mg/1 200.7 1994 14:56 3/23/2017 KCJ
0.0003 0.0002 mg/I 200.7 1994 14:56 3/23/2017 KCJ
0.006 0.001 mg/1 200.7 1994 14:56 3/23/2017 KCJ
5.08 0.02 mg/1 200.7 1994 14:56 3/23/2017 KCJ
oir
S. J. Johnson, D.R. Wessinger:
" Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 1 of 12

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
blueridgelabslenoir@gma il.com
Client : City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Attention: Lisa Triplett
Date Received: 17-Mar- I7
Report Date: 31-Mar-17
Sample Date: 16-Mar-17
BRL #: BRL-2017-0155
Lab Sample ID: LS1D-2017-00690
Client Sample ID: 031617-TKN-LEFF
Analysis Analysis
Parameter Result MQL Unit Method Time Date Analyst
N2+N3 5.56 0.08 mg/I SM19 4500-N 13:28 3/21 /2017 KCJ
TKN 9.24 0.5 mg/I SM19 4500-N 15:48 3/22/2017 KCJ
Reported By:
r /y ' ;p1"111f—
S.;, •hnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 2 of 12

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Cyanide
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Mar-17
31-Mar-17
16-Mar-17
BRL-2017-0155
LSID-2017-00691
031617-CN-GEFF
Result MQL
Unit
Analysis
Method Time
Reported By:
0.007 0.005
Analysis
Date Analyst
mg/1 4500-CN-E 1 16:02 3/20/2017
S. J / r nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 3 of 12
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
N2+N3
TKN
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Mar-17
31-Mar-17
16-Mar-17
BRL-2017-0155
LSID-2017-00692
031617-TKN-GEFF
Reported By:
Analysis Analysis
Result MQL Unit Method Time Date Analyst
2.92 0.08 mg/I SM194500-N 13:30 3/21/2017 KCJ
8.12 0.5 mg/1 SM194500-N 16:19 3/22/2017 KCJ
hnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 4 of 12

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Ag
Cd
Cr
Cu
Mo
Ni
Total Phosphorus
Zn
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Mar-17
31-Mar-17
16-Mar-17
BRL-2017-0155
LSID-2017-00693
031617-M-GEFF
Reported By:
Analysis Analysis
Result MQL Unit Method Time Date Analyst
0.004 0.001 mg/I 200.7 1994 15:00 3/23/2017 KCJ
* 0.0002 mg/I 200.7 1994 15:00 3/23/2017 KCJ
0.014 0.001 mg/1 200.7 1994 15:00 3/23/2017 KCJ
0.029 0.001 mg/1 200.7 1994 15:00 3/23/2017 KCJ
* 0.001 mg/I 200.7 1994 15:00 3/23/2017 KCJ
* 0.001 mg/1 200.7 1994 15:00 3/23/2017 KCJ
5.51 0.02 mg/1 200.7 1994 15:00 3/23/2017 KCJ
0.082 0.001 mg/1 200.7 1994 15:00 3/23/2017 KCJ
etW,IIIrrnOr Mir
S. J/ , nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 5 of 12

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Mar-17
31-Mar-17
16-Mar-17
BRL-2017-0155
LSID-2017-00694
031617-TP-GD
Result MQL
Unit Method
Total Phosphorus
Reported By:
1.21 0.02
mg/1 200.7 1994
S. J. nson, D.R. Wessinger
Analysis Analysis
Time Date Analyst
15:11 3/23/2017
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 6 of 12
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client : City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Attention: Lisa Triplett
Date Received: 17-Mar-17
Report Date: 31-Mar- l 7
Sample Date: 16-Mar-17
BRL #: BRL-2017-0155
Lab Sample ID: LSID-2017-00695
Client Sample ID: 031617-TKN-GD
Analysis Analysis
Parameter Result MQL Unit Method Time Date Analyst
N2+N3 1.58 0.08 mg/1 SM19 4500-N 13:32 3/21/2017 KCJ
TKN 6.44 0.5 mg/I SM194500-N 17:02 3/22/2017 KCJ
Reported By:
S. J.
'/•lill�Ilsm
nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 7 of 12

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Total Phosphorus
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Mar-17
31-Mar-17
16-Mar-17
BRL-2017-0155
LSID-2017-00696
031617-TP-GUP
Reported By:
Result MQL
* 0.02
Unit Method
Analysis Analysis
Time Date Analyst
nig/1 200.7 1994 15:15 3/23/2017
�f� --Or
S. rhnson, D.R. Wessinger
"Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 8 of 12
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client : City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Attention: Lisa Triplett
Date Received: 17-Mar-17
Report Date: 31-Mar-] 7
Sample Date: 16-Mar-17
BRL t#: BRL-2017-0155
Lab Sample ID: LSID-2017-00697
Client Sample ID: 031617-TKN-GUP
Analysis Analysis
Parameter Result MQL Unit Method Time Date Analyst
N2+N3 1.67 0.08 mg./1 SM194500-N 13:36 3/21/2017 KCJ
TKN 7.6 0.5 mg/I SM 19 4500-N 17:42 3!22/2017 KCJ
Reported By:
S. J. iron, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 9 of 12

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
N2+N3
TKN
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Mar-17
31-Mar-17
15-Mar-17
BRL-20I 7-0155
LSID-2017-00698
031517-TKN-GINF
Result
0.95
38.1
Reported By:
MQL Unit Method
0.08 mg/I SM19 4500-N
0.5 mgil SM 19 4500-N
S. J i nson, D.R. Wessinger
Analysis Analysis
Time Date Analyst
13:36 3/21/2017
18:16 3/22/2017
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 10 of 12
KCJ
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Cyanide
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Mar-17
31-Mar-17
15-Mar-17
BRL-2017-0155
LSID-2017-00699
031517-CN-GINF
Result MQL
0.010 0.005
Reported By:
Unit Method
mg/1 4500-CN-E 1 16:08
Analysis Analysis
Time Date Analyst
3/20/2017
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 11 of 12
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Mar-17
31-Mar-17
15-Mar-17
BRL-2017-0155
LSID-2017-00700
Client Sample ID: 031517-M-GINF
Parameter
Ag
Cd
Cr
Cu
Mo
Ni
Total Phosphorus
Zn
Hg
Reported By:
Result MQL
0.014 0.001
0.0044 0.0002
0.013 0.001
0.120 0.001
* 0.001
* 0.001
8.88 0.02
0.180 0.001
0.0002
S. J.
Unit
Analysis Analysis
Method Time Date Analyst
mg/1 200.7 1994 15:17 3/23/2017 KCJ
mg/1 200.7 1994 15:17 3/23/2017 KCJ
mg/1 200.7 1994 15:17 3/23/2017 KCJ
mg I 200.7 1994 15:17 3/23/2017 KCJ
mg/1 200.7 1994 15:17 3/23/2017 KCJ
mg/1 200.7 1994 15:17 3/23/2017 KCJ
mg/1 200.7 1994 15:17 3/23/2017 KCJ
mg/1 200.7 1994 15:17 3/23/2017 KCJ
mg/1 245.1 1994
j//-'
son, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 12 of 12

/53
Non State Reporting
Industrial or QC
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124
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Analysis Requested
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�327

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P.O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03632
121316M-GEFF PPA
Parameter
Ag
Cd
Cr
Cu
Ni
Sb
Zn
Hardness
Fig
Total Phosphorus
Be
TI
Result MQL
* 0.001
* 0.0002
* 0.001
0.028 0.001
* 0.001
* 0.01
0.139 0.001
26.9 0.03
* 0.0001
3.46 0.02
* 0.02
* 0.02
Reported By:
Analysis Analysis
Unit Method Time Date Analyst
mg/1 200.7 1994 12:11 12/29/2016 KCJ
mg/1 200.7 1994 12:11 12/29/2016 KCJ
mg/1 200.7 1994 12:11 12/29/2016 KCJ
mg/I 200.7 1994 12:11 12/29/2016 KCJ
mg/1 200.7 1994 12:11 12/29/2016 KCJ
mg/I 200.7 1994 12:11 12/29/2016 KCJ
mg/1 200.7 1994 12:11 12/29/2016 KCJ
mg/I 2340B 1997 12:11 12/29/2016 KCJ
mg/1 245.1 1994 11:38 12/15/2016 KCJ
mg/I 6010C 1994 12:11 12/29/2016 KCJ
mg/I EPA 200.7 14:09 12/30/2016 summit
mg/I EPA 200.7 14:09 12/30/2016 Summit
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 1 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03633
121316TDS-GEFF PPA
Result
MQL Unit Method
TDS
Reported By:
Analysis Analysis
Time Date Analyst
210 1 mg/1 2540C 1997 13:51
S. J. (n, D.R. Wessinger
12/17/2016
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 2 of 14
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03634
121316-625-GEFF PPA
Internal QC data on attached vendor report.
Parameter
1,2,4-Trichlorobenzene
1,2-Dichlorobenzene
1,2-Diphenyl-hydrazine
1,3-Dichlorobenzene
l,4-Dichlorobenzene
2,4, 6-Tric h lorophenol
2,4-Dichlorophenol
2,4-Dimethylphenol
2,4-Dinitrophenol
2,4-Dinitrotoluene
2,6-Dinitrotoluene
2-Chloronaphthalene
2-Chlorophenol
2-Nitrophenol
3, 3'-D ich l oroben zid ine
3,4 benzofluoranthene
4,6-Dinitro-o-cresol
4-Bromophenyl-phenylether
Reported By:
Result MQL Unit Method
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/I EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.01 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.002 mg/1 EPA 625
* 0.00 mg/1 EPA 625
/01
S. J. 7/07
' nson, D.R. Wessinger
Analysis Analysis
Time Date Analyst
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
12:37 12/21/1916 Summit
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 3 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03634
121316-625-GEFF PPA
Parameter
Analysis Analysis
Result MQL Unit Method Time Date Analyst
4-chlorophenyl phenyl ether
4-Nitrophenol
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo[a]anthracene
Benzo[a]pyrene
Benzo[g,h,i]perylene
Benzo[k]fluoranthene
bis (2-Chloroethoxy) methane
bis (2-Chloroethyl) ether
his (2-Chloroisopropyl) ether
bis (2-Ethylhexyl) phthalate
Butylbenzylphthalate
Chrysene
Di-n-butylphthalate
Di-n-octylphthalate
Reported By:
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/I EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/I EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
* 0.002 mg/I EPA 625 12:37 12/21/1916 Summit
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 4 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03634
121316-625-GEFF PPA
Parameter
Dibenz[a,h]anthracene
Diethylphthalate
Dimethylphthalate
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclopentadine
Hexachloroethane
I ndenol 1,2,3-cd]pyrene
lsophorone
N-N itroso-d i-n-propylam ine
N-Nitrosodimethylamine
N-N itrosodiphenylam ine
Naphthalene
Nitrobenzene
p-Chloro-m-cresol
Pentachlorophenol
Result
Analysis Analysis
MQL Unit Method Time Date
Reported By:
* 0.002 mg/l EPA 625 12:37 12/21/1916
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/I
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/1
* 0.002 mg/I
* 0.002 mg/1
* 0.01 mg/1
r..f r'
S. J. Jo D.R. Wessinger
Analyst
Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
EPA 625 12:37 12/21/1916 Summit
* Concentrations are below Mini um Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 5 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03634
121316-625-GEFF PPA
Analysis Analysis
Parameter Result MQL Unit Method Time Date Analyst
Phenanthrene * 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
Phenol * 0.002 mg/1 EPA 625 12:37 12/21/1916 Summit
Pyrene * 0.002 mg/I EPA 625 12:37 12/21/1916 Summit
Reported By:
S. J. !'. nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 6 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03635
121316-0&G-GEFF PPA
Result MQL
Unit
Analysis Analysis
Method Time Date
Fats, Oil & Grease
Reported By:
3.5 1
r.
S. J. fin, D.R. Wessinger
mg/1 5520B 2001 15:30 12/20/2016
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 7 of 14
Analyst
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03636
121316-Ph-GEFF PPA
Parameter
Phenols
Reported By:
Result MQL
Unit
Analysis Analysis
Method Time Date
" 0.01
mg/1 420.1 1978 16:20 12/15/2016
S. ,ohnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 8 of 14
Analyst
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03637
Client Sample ID: 121316-CI-GEFF PPA
Parameter
Chloride
Result MQL
Unit
Analysis Analysis
Method Time Date Analyst
43.7 0.1 mg/l SM19 4500-C 7:47
Reported By:
12/22/2016 Summit
S. nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 9 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03638
121316-A-GEFF PPA
Parameter
Ammonia Nitrogen
Reported By:
Result MQL
1.12 0.5
Analysis Analysis
Unit Method Time Date
mg/1 SM4500 199 11:19 12/14/2016
S. J. nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 10 of 14
Analyst
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03639
121316-TKN-GEFF PPA
Nitrate + Nitrite Nitrogen (N2+
Total Kjeldahl Nitrogen (TKN)
Reported By:
Result MQL
Unit
Analysis Analysis
Method Time Date
1.77 0.08 mg/1 4500-NO3-E
5.32 0.5 mg/I 4500-Norg B
15:56 12/28/2016
13:19 12/28/2016
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 11 of 14
Analyst
KCJ
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL k:
Lab Sample ID:
Client Sample ID:
Parameter
Cyanide
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03640
121316-CN-GEFF PPA
Result
Reported By:
Analysis Analysis
MQL Unit Method Time
Date Analyst
* 0.005 mg/I 4500-CN-E 1 16:58 12/15/2016 KCJ
S. hnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 12 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16 •
05-Jan-17
13-Dec-16
BRL-2016-0980
LSID-2016-03641
I21316-624-GEFF PPA
Result MQL
1,1,1-Trichloroethane
1,1,2,2-Tetrachloroethane
1,1,2-Trichloroethane
1,1-Dichloroethane
1,1-Dichloroethene
1,2-Dichloroethane
1,2-Dichloropropane
1 ,3-Dichloropropylene
2-Chloroethylvinyl Ether
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon Tertachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
Chloroform
Reported By:
Analysis
Unit Method Time
0.005
0.005
0.005
0.005
0.005
0.005
0.005
0.005
0.01
0.05
0.05
0.005
0.005
0.005
0.005
0.005
0.005
0.005
ug/I EPA 624 2:51
ug/1 EPA 624 2:51
ug/I EPA 624 2:51
ug/I EPA 624 2:51
ug/I EPA 624 2:51
ug/I EPA 624 2:51
ug/I EPA 624 2:51
ug/1 EPA 624 2:51
ug/1 EPA 624 2:51
ug/1 EPA 624 2:51
ug/I EPA 624 2:51
ug/I EPA 624 2:51
ug/1 EPA 624 2:51
mg/I EPA 624 2:51
mg/1 EPA 624 2:51
mg/I EPA 624 2:51
mg/1 EPA 624 2:51
mg/1 EPA 624 2:51
S. J. `arson, D.R. Wessinger
Analysis
Date
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
12/17/2016
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 13 of 14
Analyst
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
13-Dec-16
05-Jan-17
13-Dec- 16
BRL-2016-0980
LSID-2016-0364]
Client Sample ID: 121316-624-GEFF PPA
Parameter
D ichlorobromomethan e
Ethybenzene
Methyl Bromide
Methyl Chloride
Methylene Chloride
Tetrachloroethene
Toluene
Trans-1,2-dichloroethene
Trichloroethene
Vinyl Chloride
Reported By:
S. J.
Result MQL
* 0.005
* 0.005
0.00628 0.005
* 0.005
* 0.005
* 0.005
* 0.005
* 0.005
* 0.005
* 0.005
Analysis Analysis
Unit Method Time Date Analyst
mg/I EPA 624 2:51 12/17/2016 Summit
mg/I EPA 624 2:51 12/17/2016 Summit
mg/1 EPA 624 2:51 12/17/2016 Summit
mg/1 EPA624 2:51 12/17/2016 Summit
mg/1 EPA 624 2:51 12/17/2016 Summit
mg/I EPA 624 2:51 12/17/2016 Summit
mg/I EPA 624 2:51 12/17/2016 Summit
mg/I EPA 624 2:51 12/17/2016 Summit
mg/1 EPA 624 2:51 12/17/2016 Summit
mg/1 EPA 624 2:51 12/17/2016 Summit
nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 14 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Ammonia Nitrogen
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01009
041718A-GEFF
Reported By:
Result MQL
* 0.5
Unit Method
mg/I SM4500 199
nson, D.R Wessinger
Analysis
Time
15:40
Analysis
Date Analyst
4/20/2018
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 5 of 14
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Be
TI
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01010
0417186E-GEFF
Result MQL
0.02
0.02
Reported By:
Analysis Analysis
Unit Method Time Date
mg/I EPA 200.7 18:27 4/24/2018
mg/1 EPA 200.7 18:27 4/242018
S. ohnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 6 of 14
Analyst
Summit
Summit

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May- l 8
17-Apr-18
BRL-2018-0213
LSID-2018-01011
041718-GEFF624
1,1,1-Trichloroethane
1,1 2,2-Tetrachloroethane
1,1,2-Trichloroethane
1, I-Dichloroethane
1,1-Dichloroethene
1.2-Dichloroethane
1,2-Dichloropropane
1.3-Dichloropropylene
2-Chloroethylvinyl Ether
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon Tertachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
Chloroform
Reported By:
Analysis Analysis
Result MQL Unit Method Time Date Analyst
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/1 EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
* 10 ug/I EPA 624 14:31 4/20/2018 Summit
* 50 ug/I EPA 624 14:31 4/20/2018 Summit
* 50 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/1 EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/1 EPA 624 14:31 4/20/2018 Summit
* 5 ug/1 EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
6.35 5 ug/1 EPA 624 14:31 4/20/2018 Summit
son, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 7 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01011
041718-GEFF624
Dich lorobromomethane
Ethybenzene
Methyl Bromide
Methyl Chloride
Methylene Chloride
Tetrachloroethene
Toluene
Trans-1,2-dichloroethene
Trichloroethene
Vinyl Chloride
Reported By:
Analysis Analysis
Result MQL Unit Method Time Date Analyst
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
5 ug/I EPA 624 14:31 4/20/2018 Summit
5 net EPA 624 14:31 4/20/2018 Summit
5 ug/t EPA 624 14:31 4/20/2018 Summit
5 ug/I EPA 624 14:31 4/20/2018 Summit
5 ug/I EPA 624 14:31 4/20/2018 Summit
* 5 ug/I EPA 624 14:31 4/20/2018 Summit
5 ug/l EPA 624 14:31 420/2018 Summit
* 5 ug/l EPA 624 14:31 4/20/2018 Summit
* 5 ug/1 EPA 624 14:31 4/20/2018 Summit
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 8 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01012
041718-GEFF625
Result
1,2,4-Trichlorobenzene
1,2-Dichlorobenzene
1,2-Diphenyl-hydrazine
1,3-Dichlorobenzene
1,4-Dichlorobenzene
2,4,6-Trichlorophenol
2,4-Dichlorophenol
2,4-Dimethylphenol
2,4-Dinitrophenol
2,4-Dinitrotoluene
2,6-Dinitrotoluene
2-Chloronaphthalene
2-Chlorophenol
2-Nitrophenol
3,3'-D ich lorobenzidine
3,4 benzofluoranthene
4,6-Dinitro-o-cresol
4- B ro m o p h en y l -p h e n y l et h e r
Reported By:
Analysis Analysis
MQL Unit Method Time Date Analyst
* 0.0054 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0217 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/I EPA 625 17:10 4725/2018 Summit
* 0.0054 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0272 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/I EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/I EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/I EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/I EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/I EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/I EPA 625 17:10 4/25/2018 Summit
* 0.0054 mg/1 EPA 625 17:10 4/25/2018 Summit
* 0.0054... m_'1 A 625 17:10 4/25/2018 Summit
S. J. J. son, D.R. Wessinger
Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 9 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01012
041718-GEFF625
Result
4-chlorophenyl phenyl ether
4-Nitrophenol
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo[a]anthracene
Benzo[a]pyrene
Benzo[g,h,i]perylene
Benzo[k]tluoranthene
bis (2-Chloroethoxy) methane
bis (2-Chloroethyl) ether
bis (2-Chloroisopropyl) ether
bis (2-Ethylhexyl) phthalate
Butylbenzylphthalate
Chrysene
Di-n-butylphthalate
Di-n-octylphthalate
Reported By:
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
MQL Unit Method
mg'I EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg'I EPA 625
mg'I EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/I EPA 625
mg/1 EPA 625
mg/I E' • 625
del
eT,4r it
S. J. Jt %son, D.R. Wessinger
Analysis
Time
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
17:10
Analysis
Date Analyst
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25%2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
4/25/2018
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 10 of 14
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01012
Client Sample ID: 041718-GEFF625
Parameter
Dibenz[a,h]anthracene
Diethyl phthalate
Dim ethy 1phthalate
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclopentadine
Hexachloroethane
Indeno[1,2,3-cd]pyrene
Isophorone
N-N itroso-di-n-propy lam ine
N-N itrosodimethy lamine
N-N itrosodipheny lam ine
Naphthalene
Nitrobenzene
p-Chloro-m-cresol
Pentachlorophenol
Reported By:
Result MQL
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0054
* 0.0272
S. J. J 'iirson, D.R. Wessinger
Unit Method
mg/1 EPA 625
mg/1 EPA 625
mg/I EPA 625
mg/I EPA 625
mg/I EPA 625
mg/I EPA 625
mg/1 EPA 625
mg/I EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/l EPA 625
mg/I EPA 625
mg/l EPA 625
mg/1 EPA 625
mg/1 EPA 625
mg/I EPA 625
mg/l EPA 625
mg/I E A 625
Analysis Analysis
Time Date
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
17:10 4/25/2018
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 11 of 14
Analyst
Summit
Summit
Summ it
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit
Summit

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-02 13
LSID-2018-01012
Client Sample ID: 041718-GEFF625
Parameter
Phenanthrene
Phenol
Pyrene
Result MQL
* 0.0054
* 0.0054
* 0.0054
Reported By:
Analysis Analysis
Unit Method Time Date Analyst
mg/1 EPA 625 17:10 4/25/2018 Summit
mg/1 EPA 625 17:10 4/25/2018 Summit
mg'l EPA 625 17:10 4/25/2018 Summit
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No.-275
Page 12 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Phenols
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr- 18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01013
041718-GEFF
Result MQL
* 0.01
Reported By:
Unit Method
Analysis
Time
Analysis
Date Analyst
mg/I Phenol 420.1 16:12 4i26/2018
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 13 of 14
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Ag
As
Cd
Cr
Cu
Ni
Pb
Sb
Se
Total Phosphorus
Zn
Hardness
Hg
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01005
041718M-GEFF
Reported By:
Analysis Analysis
Result MQL Unit Method Time Date Analyst
* 0.001 mg/1 200.7 1994 12:16 5/2/2018 KCJ
* 0.01 mg/1 200.7 1994 12:16 5/2/2018 KCJ
* 0.0002 mg/1 200.7 1994 12:16 5/2/2018 KCJ
* 0.001 mg/I 200.7 1994 12:16 5/2/2018 KCJ
0.023 0.001 mg/1 200.7 1994 12:16 5/2/2018 KCJ
* 0.001 mg/1 200.7 1994 12:16 5/2/2018 KCJ
* 0.01 mg/1 200.7 1994 12:16 5/2/2018 KCJ
* 0.01 mg/1 200.7 1994 12:16 5/2/2018 KCJ
* 0.01 mg/1 200.7 1994 12:16 5/2/2018 KCJ
1.12 0.02 mg/1 200.7 1994 12:16 5/2/2018 KCJ
0.058 0.001 mg/1 200.7 1994 12:165/2/2018 KCJ
17.4 0.03 mg/1 2340B 1997 12:16 5/2/2018 KCJ
* 0.0001 mg/1 245.1 1994 15:12 4/25/2018 KCJ
lgr
S. J. nson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 1 of 14

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01006
Client Sample ID: 041718TDS-GEFF
Parameter
TDS
Result MQL
76 1
Reported By:
Unit Method
Analysis
Time
Analysis
Date Analyst
mg/1 2540C 1997 10:26 4/20/2018
S. J. Johnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 2 of 14
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
Cyanide
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01007
041718CN-GEFF
Result MQL
0.005 0.005
Reported By:
Unit Method
Analysis Analysis
Time Date Analyst
mg/I 4500-CN-E 1 16:56 4/24/2018
S. J. ohnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 3 of 14
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
Client Sample ID:
Parameter
N2—N3
TKN
City of Lenoir
P. O. Box 958
Lenoir. NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01008
041718N-GEFF
Result MQL Unit Method
2.37 0.08 mg/1 SM19 4500-N
6.20 0.5 mg/I SM19 4500-N
Reported By:
Analysis Analysis
Time Date Analyst
10:55 4/19/2018
11:52 4/18/2018
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 4 of 14
KCJ
KCJ

Blue Ridge Labs
PO Box 2940
Lenoir, NC 28645
828-728-0149
[e-mail]
Client :
Attention:
Date Received:
Report Date:
Sample Date:
BRL #:
Lab Sample ID:
City of Lenoir
P. O. Box 958
Lenoir, NC 28645
Lisa Triplett
17-Apr-18
02-May-18
17-Apr-18
BRL-2018-0213
LSID-2018-01014
Client Sample ID: 041718-GEFF
Parameter
Fats, Oil & Grease
Result MQL
1.2
Reported By:
Unit
Analysis
Method Time
Analysis
Date Analyst
mg/1 5520B 2001 10:22 4/26/2018
S. . ohnson, D.R. Wessinger
* Concentrations are below Minimum Quantification Limit except where noted.
NC Laboratory Certificate No. 275
Page 14 of 14
KCJ

1/12/2021
Mail - Perlmutter, Gary - Outlook
[External] RE: Gunpowder draft permit
Triplett, Lisa R. <[e-mail]>
Tue 1/12/2021 1:12 PM
To: Perlmutter, Gary <[e-mail]>
1 attachments (10 MB)
Gunpowder draft permit;
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment
to Report Spam.
Hi Gary,
Thanks for the draft permit to look at.
I noticed on the effluent pH it will be one time per week, is that correct. The current permit it is daily.
Also the effluent total chlorine is 2 times per week, on the current permit It is daily as well.
Just checking to make sure.
Seem. 71.0eete,
Veatew4tez 7re4tmerit React Suizenic ade to
(8281 757- 2/998
LENOIR A
PUBLIC UTILITIES.'
https://outlook.office365.com/mail/inbox/id/AAQkADRjNGZkNGYwLWNjOTctNGQ4MS1 hZDQ3LWJjMGMOYmRiN2M3NwAQAPuR1ZvRdZ9MgnZFa7L... 1/1

1/13/2021 Mail - Perlmutter, Gary - Outlook
RE: Gunpowder WWTP draft permit
Thomas, Zachary T <[e-mail]>
Wed 1/13/2021 11:43 AM
To: Perlmutter, Gary <[e-mail]>
Cc: Moore, Cindy <[e-mail]>
Everything looks good for Tox!
Thank you,
Zach Thomas
Environmental Specialist II
Aquatic Toxicology Branch
NCDEQ— Division of Water Resources
919-743-8439
Submit ATForms electronically to: [e-mail]
DEQ
Email correspondence to and from this address is subject to the North Carolina Public Records Law
and may be disclosed to third parties.
From: Perlmutter, Gary
Sent: Tuesday, January 12, 2021 11:32 AM
To: Heim, Tim <[e-mail]>; Kinney, Maureen <[e-mail]>; Thomas, Zachary T
<[e-mail]>; Moore, Cindy <[e-mail]>; Barnett, Kimberly
<[e-mail]>
Subject: Gunpowder WWTP draft permit
Dear everyone,
Attached is the draft permit for Gunpowder Creek WWTP (NC0023736), scheduled to be Public Noticed
this week. Please let me know if you have any questions.
Thanks,
Gary Perlmutter
Gary Perlmutter, Environmental Specialist II
NCDEQ/Division of Water Resources
NPDES Municipal Permitting Unit
919-707-3611 Office
919-306-1017 Cell
[e-mail]
Physical Address: 512 N Salisbury St., Raleigh, NC 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC 27699-1617
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1/13/2021 Mail - Perlmutter, Gary - Outlook
Email correspondence to and from this address is subject to the North Carolina Public Records Law and
may be disclosed to third parties.
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ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
MEMORANDUM
To:
From:
Subject:
NORTH CAROLINA
Environmental Quality
January 21, 2021
Kimberly Barnett
NC DEQ / DWR / PWS Regional Engineer
Asheville Regional Office
Gary Perlmutter
919-707-3611
NPDES Unit
Review of Draft NPDES Permit NC0023736
Gunpowder Creek WWTP
Caldwell County
Please indicate below your agency's position or viewpoint on the draft permit and return this form by April 18, 2019.
If you have any questions on the draft permit, please feel free to contact me at the telephone number shown above.
RESPONSE: (Check one)
X
Concur with the issuance of this permit provided the facility is operated and maintained properly, the stated
effluent limits are met prior to discharge, and the discharge does not contravene the designated water quality
standards.
Concurs with issuance of the above permit, provided the following conditions are met:
Opposes the issuance of the above permit, based on reasons stated below, or attached:
Signed iv(,001,e- F(Guva-t tV Date: 01/21/21
NORTH CAROLINA
Opartnem W Environmental Quellry
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.3601