NC0026000_Fact Sheet_20210706

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Fact Sheet
NPDES Permit No. NC0026000

Permit Writer/Email Contact Nick Coco, [e-mail]:
Date: September 21, 2020
Division/Branch: NC Division of Water Resources/NPDES Municipal Permitting
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: Town of Tabor City/Tabor City Wastewater Treatment Plant (WWTP)
Applicant Address: PO Box 655, Tabor City, NC 28463
Facility Address: 244 US Highway 701 Bypass North, Tabor City, NC 28463
Permitted Flow: 1.1 MGD
Facility Type/Waste: MAJOR Municipal; 100% domestic
Facility Class: Grade III Biological Water Pollution Control System
Treatment Units: a triplex influent pumping station, Parshall flume, mechanical bar
screen and manual bar screen, grit remover, side-stream emergency
surge basin (1.7 MGD), one extended-aeration activated sludge basin
with mechanical surface aerators (low basin), one contact stabilization
activated sludge basin with mechanical surface aerators (upper basin),
two (2) secondary clarifiers (may be operated in parallel or in series),
influent and effluent samplers, liquid chlorine / sulfur-dioxide feed
system, dual-channel chlorine contact chamber, aerated sludge-holding
basin, influent and effluent ultrasonic flow meter, and a back-up power
generator
Pretreatment Program (Y/N) N
County: Columbus
Region Wilmington
Briefly describe the proposed permitting action and facility background: The Town of Tabor City has
applied for an NPDES permit renewal at 1.1 MGD for the Tabor City WWTP. This facility serves a
population of 2900 residents. Treated domestic wastewater is discharged into an unnamed tributary to
Grissett Swamp, a class C;SW water in the Lumber River Basin. The facility has a primary Outfall 001.
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During the 2014 NPDES permit renewal, Special Condition A.(6.) Facility Assessment and Corrective
Action Plan was added to the permit, requiring the Town to evaluate the physical and operational
condition and performance of the Tabor City WWTP, as well as to submit a corrective action plan
including a strategy for repair/modification/replacement of deficiencies in the Tabor City WWTP. The
Town of Tabor City submitted a first draft of their Facility Evaluation and Corrective Action Plan to the
Division in August 2016. The Division submitted provided comments on the draft on January 30, 2017
and a second submittal was received on May 23, 2017. On June 14, 2017, the Division provided
additional comments. The Town addressed the Division’s additional comments on July 27, 2018. The
Town was granted Authorization to Construct permit 026000A02 on February 15, 2019 for the
installation of a new mechanical bar screen, replacement of influent pumps, installation of a new force
main, construction of a new dual-channel chlorine contact chamber, replacement of existing gas
chlorination disinfection system with a new liquid chlorination disinfection system, installation of new
chemical feed pumps and chemical storage tanks, installation of a new blower and post-aeration coarse
bubble system, and replacement of the existing mixer with a new floating mechanical aerator in the
sludge digester.

2. Receiving Waterbody Information:
Receiving Waterbody Information
Outfalls/Receiving Stream(s): Outfall 001 – unnamed tributary to Grissett Swamp
Stream Index: 15-17-1-6
Stream Classification: C-Sw
Drainage Area (mi2): 1.0
Summer 7Q10 (cfs) 0.0
Winter 7Q10 (cfs): 0.0
30Q2 (cfs): 0.0
Average Flow (cfs): 1.0
IWC (% effluent): 100
303(d) listed/parameter: No
Subject to TMDL/parameter: Yes- State wide Mercury TMDL implementation.
Subbasin/HUC: 03-07-57/03040206
USGS Topo Quad: K23NE Tabor City, NC

3. Effluent Data Summary
Effluent data for Outfall 001 is summarized below for the period of August 2016 through August 2020.
Table 1. Effluent Data Summary Outfall 001
Parameter Units Average Max Min Permit
Limit
Flow MGD 0.45 4.919 0.116 MA 1.1
BOD (summer) mg/l 3.2 14.7 2 WA 7.5
MA 5.0
BOD (winter) mg/l 3 11.3 2 WA 15.0
MA 10.0
TSS mg/l 7 110 2.1 WA 45.0
MA 30.0
NH3N (summer) mg/l 0.35 6.6 0.1 WA 3.0
MA 1.0
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NH3N (winter) mg/l 0.27 3.8 0.1 WA 5.4
MA 1.8
DO mg/l 8 15.2 5.1 DA ≥ 5 mg/l
Fecal coliform #/100 ml (geomean)
23.7 2550 1
(geometric)
WA 400
MA 200
Temperature ° C 20.1 30 4
Total Residual Chlorine ug/l 19.3 50 1 DM 17
pH SU 7 7.8 6.1 6.0 ≤ pH ≤
9.0
Total Copper ug/l 7 22 3
Total Zinc ug/l 40.8 208 17
Total Mercury ng/l 5.8 36.6 1.11 AA 12
Total Mercury (MLSS) ng/l 1627 22000 200
TN mg/l 17 35.6 0.5
TP mg/l 1.5 4 0.4
MA-Monthly Average, WA-Weekly Average, DM-Daily Maximum, DA-Daily Average, QA-
Quarterly Average

4. Instream Data Summary
Instream monitoring may be required in certain situations, for example: 1) to verify model predictions
when model results for instream DO are within 1 mg/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 and temperature
upstream of the outfall at U.S. Highway 701 Bypass and downstream approximately 75 yards from the
outfall. DMR Data were observed from August 2016 to August 2020. The data has been summarized in
Table 2 below.
Table 2. Instream Monitoring Data Summary
Parameter Units Upstream Downstream
Average Max Min Average Max Min
DO mg/l 4 10.4 0.5 3.8 10.5 0.2
Temperature ° C 21 29 3 21 28 4

Students t-tests were run at a 95% confidence interval to analyze relationships between instream
samples. A statistically significant difference is determined when the t-test p-value result is < 0.05
The downstream temperature did not exceed 32 degrees Celsius [per 15A NCAC 02B .0211 (18)] during
the period reviewed. The temperature differential exceeded 2.8 degrees Celsius on 1 occasion during the
period reviewed. It was concluded that no statistically significant difference exists between upstream and
downstream temperature.
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Downstream DO dropped below 5 mg/L on 273 occasions [per 15A NCAC 02B .0211 (6)] during the
period reviewed. Downstream DO dropped below 4 mg/L on 207 occasions during the period reviewed.
Upstream DO dropped below 5 mg/L on 240 occasions [per 15A NCAC 02B .0211 (6)] during the period
reviewed. Upstream DO dropped below 4 mg/L on 186 occasions during the period reviewed. It was
concluded that no statistically significant difference exists between upstream and downstream DO. The
receiving stream is classified as Swamp waters, a water classification associated with naturally low levels
of DO.
Is this facility a member of a Monitoring Coalition with waived instream monitoring (Y/N): N
Name of Monitoring Coalition: NA

5. Compliance Summary
Summarize the compliance record with permit effluent limits (past 5 years): The facility reported 1 TRC
limit violation resulting in enforcement in 2016. In 2018, the facility reported 1 fecal coliform limit
violation resulting in enforcement. In 2019, the facility reported 2 TSS limit violations and 4 BOD limit
violations resulting in enforcement. The facility reported 1 BOD limit violation, 2 fecal coliform limit
violations and 2 ammonia limit violations resulting in enforcement in 2020.
Summarize the compliance record with aquatic toxicity test limits and any second species test results
(past 5 years): The facility passed 18 of 18 quarterly chronic toxicity from March 2016 to June 2020.
Upon review of the facility’s NPDES renewal application, it was found that the facility did not conduct
additional species toxicity testing. After discussion with the Aquatic Toxicology Branch, the Town was
instructed to conduct additional species testing once per month from October 2020 through January 2021.
The 4 second species tests each passed.
Summarize the results from the most recent compliance inspection: The facility inspection conducted in
April 2019 reported that the facility was out of compliance with permit NC0026000 and a notice of
violation was issued. The Wilmington Regional Office noted in their report that the skimmer arm on the
clarifier was inoperable during the inspection and had not been reported to the DWR as required by the
permit. Also, there was a significant amount of floating solids in the clarifier and in the weir channel. It
appeared that the weir was holding back much of the solids but there was still a small amount passing to
the chlorine contact chamber. There appeared to be a small amount of solids within the discharge channel
but no solids were observed in the receiving ditch. This subsequently led to limit violations for the month
of April 2019. Additionally, the aerobic digester needed to be repaired as soon as is possible. It was not
functioning during the inspection due to the aerator being inoperable and was overgrown with plants and
trees. Lastly, a maintenance plan had not been established at the time.
The Division received a response from the Town of Tabor City on August 28, 2019 to inform the
Wilmington Regional office that the aerobic digester was cleaned of overgrown plants and trees, the
facility had begun the sludge handling process in preparation of upcoming upgrades, the skimmer arm on
the clarifier was repaired, and that team communication guidelines have been created to prevent future
miscommunications like the one that caused them to not report the inoperable clarifier. Additionally, the
Town noted that they had hired a maintenance operator, per Division recommendation. The Wilmington
Regional Office conducted a follow-up inspection in December 2020 and reported that the facility was in
compliance with NPDES permit NC0026000.

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6. Water Quality-Based Effluent Limitations (WQBELs)
Dilution and Mixing Zones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1Q10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic
Life; non-carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA
If applicable, describe any mixing zones established in accordance with 15A NCAC 2B.0204(b): NA
Oxygen-Consuming Waste Limitations
Limitations for oxygen-consuming waste (e.g., BOD) are generally based on water quality modeling to
ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits
(e.g., BOD= 30 mg/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: The Division
prepared the last WLA Level B model for the receiving stream in June 1994. The permit effluent limits
for BOD5 (5 mg/L in the summer period and 10 mg/L in the winter period) at 1.1 MGD were based on
this WLA. These BOD limits are consistent with the 1999 Zero Flow Policy. No changes are proposed.

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 ug/l) and capped at 28 ug/l (acute impacts). Due to analytical issues, all TRC values
reported below 50 ug/l are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: The current
permit sets a daily maximum limit of 17 ug/L. TRC limits have been reviewed in the attached WLA and
have been found to be consistent with the results. There are no proposed changes for TRC.
The existing ammonia limits were implemented in the permit during the 2015 renewal. In accordance
with an agreement with EPA Region IV, limits for ammonia- nitrogen are based on a summer criterion of
1 mg/ L and a winter criterion of 1.8 mg/ L. Since the WWTP is provided no dilution from the receiving
stream, the monthly average effluent limits determined for the Tabor City WWTP are 1 mg/L in the
summer and 1.8 mg/L in the winter. Using a 3:1 ratio the weekly average limits for NH3- N will be 3 mg/
L in the summer and 5.4 mg/ L in the winter. Ammonia-nitrogen limits have been reviewed in the
attached WLA and have been found to be protective. No changes are proposed to ammonia limits.

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Reasonable Potential Analysis (RPA) for Toxicants
If applicable, conduct RPA analysis and complete information below.
The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality
standards, a statistical evaluation that is conducted during every permit renewal utilizing the most rec ent
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 ½ detection limit for “less than” values; and 4) streamflows used for dilution
consideration based on 15A NCAC 2B.0206. Effective April 6, 2016, NC began implementation of
dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of
Instream Dissolved Metals Standards, dated June 10, 2016.
A reasonable potential analysis was conducted on effluent toxicant data collected between December
2016 through December 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: Total Copper, Total 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: NA
• No Limit or Monitoring: The following parameters will not receive a limit or monitoring, since
they did not demonstrate reasonable potential to exceed applicable water quality
standards/criteria and the maximum predicted concentration was <50% of the allowable
concentration: NA
• POTW Effluent Pollutant Scan Review: Three effluent pollutant scans were evaluated for
additional pollutants of concern. (PPAs from 2016, 2017 and 2021)
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: N/A
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: N/A
o 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: Total
Phenolic Compounds, Beryllium, Total Cadmium, Total Arsenic, Total Chromium, Total
Cyanide, Total Lead, Total Nickel, Total Selenium, Total Silver

Note: The Permittee did not conduct their 2018 PPA scan as required in their NPDES permit. After
discussion with the Permittee during the renewal process, the Permittee conducted a scan and submitted
the results in April 2021.
The Town of Tabor City reported Total Beryllium, Total Cadmium, Total Chromium, Total Lead, Total
Selenium, and Total Silver at less than detection, with insufficiently sensitive methods in the Effluent
Pollutant Scans. The Practical Quantitation Levels (PQLs) of the methods used, allowable discharge
concentrations, and DWR-identified target PQLs for each parameter have been summarized below. 15A
NCAC 2B .0505 (e) (4) requires that all test procedures must produce detection and reporting levels that
are below the permit discharge requirements and all data generated must be reported to the approved
detection level or lower reporting level of the procedure. If no approved methods are capable of achieving
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a detection level below the permit discharge requirement (or allowable discharge concentration) the
method with the lowest detection level must be used. The Town should use sufficiently sensitive test
methods for all pollutants, including when performing Effluent Pollutant Scans.
Parameter Method PQL Allowable Discharge
Concentration DWR PQL
Total Beryllium 5 ug/l and 10 ug/l 6.5 ug/l 5 ug/l
Total Cadmium 2 ug/l and 10 ug/l 1.1 ug/l 0.5 ug/l
Total Chromium 5 ug/l and 10 ug/l * 5 ug/l
Total Lead 10 ug/l 8.2 ug/l 2 ug/l
Total Selenium 10 ug/l 5 ug/l 1 ug/l
Total Silver 5 ug/l and 10 ug/l 0.06 ug/l 1 ug/l
*Division guidance allows for no monitoring if all Total Chromium samples are < 5 µg/L or Pred. max
for Total Cr is < allowable Cw for Cr VI. The allowable Cw for Cr VI is 11 ug/l. The Town of Tabor City
shall use a test method capable of achieving a PQL of 5 ug/l.

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: The permit requires quarterly chronic toxicity testing at
90% effluent concentration. No changes are proposed.

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.
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Table 3. Mercury Effluent Data Summary (1.1 MGD)
2017 2018 2019 2020 2021
# of Samples 11 12 12 13 2
Annual Average Conc. ng/L 3.9 9.9 5.5 7.67 1.93
Maximum Conc., ng/L 8.44 36.6 15.8 56.6 2.08
TBEL, ng/L 47
WQBEL, ng/L 12
Describe proposed permit actions based on mercury evaluation: During the 2014 NPDES permit renewal,
a Mercury Minimization Plan (MMP) special condition was added to the permit to address the Town’s
high levels of total mercury. The Division suspected the operation and maintenance problems at the
WWTP resulted in poor solids removal and solids buildup in the chlorine contact tank. Therefore, as
required by EPA in the Administrative Orders (AO) CWA-04-2010-4751 issued to the Town of Tabor
City on October 15, 2009, total mercury (as Hg, measured in ng/L) testing was added for the following
wastewater categories: influent, effluent, and Mixed Liquor Suspended Solids (MLSS) in an aeration
chamber. This requirement is listed in Section A. (1.) of the draft permit and in the MMP special
condition A.(4.). An effluent annual average limit for total mercury was also added to the permit at this
time. Since the facility reported an individual mercury sample that exceeded the TBEL, the mercury
limitation has been maintained. While the facility is < 2 MGD in design capacity, the MMP and
monitoring conditions have been maintained in the permit due to the facility’s continued high levels of
total mercury.

Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation
within this permit: NA

Other WQBEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: NA
If applicable, describe any special actions (HQW or ORW) this receiving stream and classification shall
comply with in order to protect the designated waterbody: NA
If applicable, describe any compliance schedules proposed for this permit renewal in accordance with
15A NCAC 2H.0107( c)(2)(B), 40CFR 122.47, and EPA May 2007 Memo: As total copper and total zinc
demonstrated reasonable potential to exceed the facility’s allowable discharge concentrations based on
state surface water standards, monthly average and daily maximum limits have been put in the permit for
total copper and total zinc. Since this facility has no pretreatment program, A 3-yr compliance
schedule with a WER study option has been added for Total Copper and Total Zinc limits to allow for
additional data collection and development and implementation of a compliance strategy.
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
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Are 85% removal requirements for BOD5/TSS included in the permit? YES; Overall BOD and TSS
removal rates > 85%.
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(l) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YES/NO): NO
If YES, confirm that antibacksliding provisions are not violated: NA

10. Monitoring Requirements
Monitoring frequencies for NPDES permitting are established in accordance with the following
regulations and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 2B.0500; 2)
NPDES Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance,
Reduced Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best
Professional Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not
considered effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti-
backsliding prohibitions would not be triggered by reductions in monitoring frequencies.
For instream monitoring, refer to Section 4.
During the 2010 NPDES permit renewal, the Permittee requested to sample for fecal coliform four (4)
times a week – not five (5), as was proposed in the draft permit, because a Friday sample requires them to
pay for Lab results on Saturday, an additional expense. They proposed to sample Monday through
Thursday providing four (4) samples per week, and collect a fifth sample only during storm-flow
conditions on Friday. The Division agreed that this proposal was adequate for this Grade III facility, but
defined “storm-flow conditions” as any Friday when the influent wastewater flow rate exceeds the
permitted 1.1 MGD. Moreover, the Permittee volunteered to collect all fecal coliform samples during
peak flow between 09:00 and 14:00 hrs. Based on the results of the fecal coliform effluent monitoring,
this has been maintained in the permit.

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11. Electronic Reporting Requirements
The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective
December 21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports
(DMRs) electronically. While NPDES regulated facilities would initially be required to submit additional
NPDES reports electronically effective December 21, 2020, EPA extended this deadline from December
21, 2020, to December 21, 2025. The current compliance date, effective January 4, 2021, was extended as
a final regulation change published in the November 2, 2020 Federal Register This permit contains the
requirements for electronic reporting, consistent with Federal requirements.

12.Summary of Proposed Permitting Actions:
Table 4. Current Permit Conditions and Proposed Changes 1.1 MGD
Parameter Current Permit Proposed Change Basis for Condition/Change
Flow MA 1.1 MGD No change 15A NCAC 2B .0505
BOD5 Summer:
MA 5.0 mg/l
WA 7.5 mg/l
Winter:
MA 10.0 mg/l
WA 15.0 mg/l
No change

WQBEL. 1994 Level B model.
15A NCAC 2B
NH3-N Summer:
MA 1.0 mg/l
WA 3.0 mg/l
Winter:
MA 1.8 mg/l
WA 5.4 mg/l
No change WQBEL. 2020 WLA review. 15A
NCAC 2B;
TSS MA 30 mg/l
WA 45 mg/l

No change

TBEL. Secondary treatment
standards/40 CFR 133 / 15A
NCAC 2B .0406;
Fecal coliform MA 200 /100ml
WA 400 /100ml
Monitor and
Report 4/week

No change

WQBEL. State WQ standard, 15A
NCAC 2B; 2010 agreement with
Town
DO DA ≥ 5 mg/l No change WQBEL. State WQ standard, 15A
NCAC 2B .0200
Temperature Monitor and
Report Daily
No change Surface Water Monitoring, 15A
NCAC 2B. 0500
pH 6 – 9 SU No change WQBEL. State WQ standard, 15A
NCAC 2B
Total Residual Chlorine DM 17 ug/L No change WQBEL. 2020 WLA review.
Total Nitrogen

Monitor and
Report Monthly
No change

Surface Water Monitoring, 15A
NCAC 2B. 0500
Total Phosphorous Monitor and
Report Monthly
No change Surface Water Monitoring, 15A
NCAC 2B. 0500
Total Copper Monitor and
Report Quarterly
MA 17.4 ug/L
DM 25.1 ug/L
Based on results of Reasonable
Potential Analysis (RPA); RP
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Monitor and Report
Monthly

3-year compliance
schedule with WER
option
shown - apply Monthly Monitoring
with Limit
Total Zinc Monitor and
Report Quarterly
MA 276.3 ug/L
DM 276.3 ug/L
Monitor and Report
Monthly

3-year compliance
schedule with WER
option
Based on results of Reasonable
Potential Analysis (RPA); RP
shown - apply Monthly Monitoring
with Limit
Total Hardness No requirement Quarterly monitoring
Upstream and in
Effluent
Hardness-dependent dissolved
metals water quality standards
approved in 2016
Total Mercury AA 12 ng/L

Monitor and
Report Monthly in
effluent and MLSS
No change WQBEL. Consistent with 2012
Statewide Mercury TMDL
Implementation; Individual sample
greater than TBEL;
2009 EPA AO
Chronic Toxicity Chronic limit,
90% effluent
No change WQBEL. No toxics in toxic
amounts. 15A NCAC 2B
Effluent Pollutant Scan Three times per
permit cycle
No change; conducted
in 2023, 2024, 2025
40 CFR 122
Mercury Minimization
Plan (MMP)
MMP Special
Condition
No change Facility continues to experience
high levels of total mercury; 2009
EPA AO
Facility Assessment and
Corrective Action Plan
Condition
Submit an
evaluation and
CAP to the
Division to address
plant deficiencies
Remove Requirement Requirement satisfied and
Authorization to Construct issued
Electronic Reporting Electronic
Reporting Special
Condition
No change In accordance with EPA Electronic
Reporting Rule 2015.
MGD – Million gallons per day, MA - Monthly Average, WA – Weekly Average, DM – Daily Max, QA
– Quarterly Average, DA – Daily Average, AA – Annual Average

13. Public Notice Schedule:

Permit to Public Notice: May 19, 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.
Page 12 of 12

14. Fact Sheet Addendum (if applicable):

The draft was submitted to the Town of Tabor City and their contractor Envirolink, EPA Region IV, and
the Division’s Wilmington Regional Office, Aquatic Toxicology Branch and Operator Certification
Program for review. No comments were received from any party.

Were there any changes made since the Draft Permit was public noticed (Yes/No): NO
If Yes, list changes and their basis below: NA

15. Fact Sheet Attachments (if applicable):
• Application Addendum
• RPA Spreadsheet Summary
• BOD and TSS Removal
• Dissolved Metals Implementation/Freshwater
• Waste Load Allocation Spreadsheet
• Mercury TMDL Spreadsheet
• Limit Violations Summary
• Toxicity Summary and 2nd species test results
• 2019 PPA Scan
• Instream Monitoring Summary
AFFIDAVIT OF PUBLICATION
Personally appeared before me Penny Holmes
and upon duly being sworn says that she is the
Advertising Manager of Tabor -Loris Tribune, a
weekly newspaper of general circulation in the County
of Columbus in the State of North Carolina , and in the
County of Horry in the State of South Carolina; and
further says that the attached legal advertisement was
published in Tabor -Loris Tribune on the following
dates:
lst: 5/19/2021
2nd:
3rd.
4th:
As shown by the files of said company.
'OefArtiew4,,,,
Penny Holmes, Advertising Manager
Sworn to before me this 20th
day of May , 2021 .
(L.S.)
DY S. ERRING
Notary Public for North Carolina
My Commission expires:
May 5, 2024
..........
Public Notice
North Carolina Environmental
Management Commission/
NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of intent to Issue
a NPDES Wastewater
Per-
mit NC0026000 r City
WWTP The North Carolina
EnvironmentalM aeme o
Commission proposes
issue a NPDES wastewater
discharge permit to the
person(s) listed below. Writ-
ten comments regarding
the proposed permit will
be accepted until 30 days
after the publish date of this
notice. The Director of the NC
Division of Water hold pubes
rCeS
(DWR) may
hearing should there be a
significant degree of public
interest. Please mail com-
ments and /or information re-
quests to DWR at the persons
above
address. Interested
may visit the DWR at 512 N.
Salisbury Street, Raleigh, NC
27604 to review Information
on file,
Additional information
on NPDES permits and this
notice may be found on
our website: http://deq.
nc.gov/about/divisions/
water-resources/water-re-
sources-permits/ewastewci-
ter-branch/npd
water/public-notices,or by
calling (919) 707-360 . The
(244 US
Town of Tabor CN iTabor City,
Hwy 701 Byp
NC 28463) has requsted
renewal of NPDES permit
NC0026000 for its Tabor City
Wastewater Treatment Plant,
located pe
This pfacility
permitted dis-
charges treated municipal
wastewater to an unnamed
tributary to Grissett Swamp,
a class C-SW water in the
Lumber River Basin. Currently.
BOD, ammonia, fecalcoil-
form,
dissolved oxygen,
total residual chlorine, total
copper, total zinc and total
mercury are water quality
limited. This discharge may
affect future allocations
in this segment of Grissett
Swamp. 5/19c.

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
yammantaborcity.org
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
with your NPDES permitting authority to determine what information
Discharges into marine waters (CWA Section
301(h))
authorized at 40 CFR 122.21(n)? (Check all that apply. Consult
needs to be submitted and when.)
� Water quality related effluent limitation (CWA
Section 302(b)(2))
NI Not applicable
1.6
40 CFR
1.7
40 CFR
1.8
Email address of contractor responsible for operational or maintenance aspects of the treatment works
ngu ton • envirolinkinc.com
122.21(j)(6)
Indicate the number of SIUs and NSCIUs that discharge to the POTW.
Number of SIUs Number of CIUs
NA NA
122.22(a) and (d)
Certification Statement
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted.
Based on my inquiry of the person or persons who manage the system, or those persons directly responsible forgathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that
there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing
violations.
Name (print or type first and last name)
A.J. Leonard
Official title
Town Manager
''—�
Date signed
Signature

REQUIRED DATA ENTRY
Name WQS Type Chronic Modifier Acute PQL Units
Facility Name Tabor City WWTP Par01 Arsenic Aquactic Life C 150 FW 340 ug/L
WWTP/WTP Class III Par02 Arsenic Human Health
Water Supply C 10 HH/WS N/A ug/L
NPDES Permit NC0026000 Par03 Beryllium Aquatic Life NC 6.5 FW 65 ug/L
Outfall 001 Par04 Cadmium Aquatic Life NC 1.1907 FW 7.2899 ug/L
Flow, Qw (MGD)1.100 Par05 Chlorides Aquatic Life NC 230 FW mg/L
Receiving Stream UT to Grissett Swamp Par06 Chlorinated Phenolic Compounds Water Supply NC 1 A ug/L
HUC Number 03040206 Par07 Total Phenolic Compounds Aquatic Life NC 300 A ug/L
Stream Class Par08 Chromium III Aquatic Life NC 252.0696 FW 1937.8129 ug/L
Par09 Chromium VI Aquatic Life NC 11 FW 16 µg/L
7Q10s (cfs)0.000 Par10 Chromium, Total Aquatic Life NC N/A FW N/A µg/L
7Q10w (cfs)0.00 Par11 Copper Aquatic Life NC 17.4388 FW 25.1413 ug/L
30Q2 (cfs)0.00 Par12 Cyanide Aquatic Life NC 5 FW 22 10 ug/L
QA (cfs)1.00 Par13 Fluoride Aquatic Life NC 1,800 FW ug/L
1Q10s (cfs)0.00 Par14 Lead Aquatic Life NC 8.2947 FW 212.8561 ug/L
Effluent Hardness 63.33 mg/L (Avg)Par15 Mercury Aquatic Life NC 12 FW 0.5 ng/L
Upstream Hardness 25 mg/L (Avg)Par16 Molybdenum Human Health NC 2000 HH ug/L
Combined Hardness Chronic 63.33 mg/L Par17 Nickel Aquatic Life NC 81.7396 FW 735.9342 µg/L
Combined Hardness Acute 63.33 mg/L Par18 Nickel Water Supply NC 25.0000 WS N/A µg/L
Data Source(s)Par19 Selenium Aquatic Life NC 5 FW 56 ug/L
Par20 Silver Aquatic Life NC 0.06 FW 1.4663 ug/L
Par21 Zinc Aquatic Life NC 278.5735 FW 276.3133 ug/L
Par22
Par23
Par24
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
To appy a Model IWC %: Once the
"Flow, Qw (MGD)" and and the
"CHRONIC DILUTION FACTOR =
" values are entered, the 7Q10s
(cfs) flow is calculated and
displayed. Enter the calculated
"7Q10s (cfs)" flow value in Table 1.
Table 1. Project Information Table 2. Parameters of Concern
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
C-Sw
CHECK IF HQW OR ORW WQS
CHECK TO APPLY MODEL
Apply WS Hardness WQC
26000 RPA, input
4/27/2021
REASONABLE POTENTIAL ANALYSIS
H1 H2
Effluent Hardness Upstream Hardness
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 3/15/2016 58 58 Std Dev.5.0332 1 Default 25 25 Std Dev.N/A
2 6/13/2017 64 64 Mean 63.3333 2 Mean 25.0000
3 3/18/2021 68 68 C.V. (default)0.6000 3 C.V.0.0000
4 n 3 4 n 1
5 10th Per value 59.20 mg/L 5 10th Per value 25.00 mg/L
6 Average Value =63.33 mg/L 6 Average Value =25.00 mg/L
7 Max. Value 68.00 mg/L 7 Max. Value 25.00 mg/L
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
40 40
41 41
42 42
43 43
44 44
45 45
46 46
47 47
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
- 1 -
26000 RPA, data
4/27/2021
REASONABLE POTENTIAL ANALYSIS
Par01 & Par02
Arsenic
Date Data BDL=1/2DL Results
1 3/15/2016 <10 5 Std Dev.0.0000
2 6/13/2017 <10 5 Mean 5.0000
3 3/18/2021 <10 5 C.V. (default)0.6000
4 n 3
5
6 Mult Factor =3.00
7 Max. Value 5.0 ug/L
8 Max. Pred Cw 15.0 ug/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
- 2 -
26000 RPA, data
4/27/2021
REASONABLE POTENTIAL ANALYSIS
Par03 Par04
Beryllium Cadmium
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 3/15/2016 <5 2.5 Std Dev.1.4434 1 3/15/2016 <2 1 Std Dev.2.3094
2 6/13/2017 <5 2.5 Mean 3.3333 2 6/13/2017 <2 1 Mean 2.3333
3 3/18/2021 <10 5 C.V. (default)0.6000 3 3/18/2021 <10 5 C.V. (default)0.6000
4 n 3 4 n 3
5 5
6 Mult Factor =3.00 6 Mult Factor =3.00
7 Max. Value 5.00 ug/L 7 Max. Value 5.000 ug/L
8 Max. Pred Cw 15.00 ug/L 8 Max. Pred Cw 15.000 ug/L
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
40 40
41 41
42 42
43 43
44 44
45 45
46 46
47 47
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
- 3 -
26000 RPA, data
4/27/2021
REASONABLE POTENTIAL ANALYSIS
Par07 Par10
Total Phenolic Compounds Chromium, Total
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 3/15/2016 <10 5 Std Dev.7.7513 1 3/15/2016 <5 2.5 Std Dev.1.4434
2 6/13/2017 17 17 Mean 8.1667 2 6/13/2017 <5 2.5 Mean 3.3333
3 3/18/2021 <5 2.5 C.V. (default)0.6000 3 3/18/2021 <10 5 C.V. (default)0.6000
4 n 3 4 n 3
5 5
6 Mult Factor =3.00 6 Mult Factor =3.00
7 Max. Value 17.0 ug/L 7 Max. Value 5.0 µg/L
8 Max. Pred Cw 51.0 ug/L 8 Max. Pred Cw 15.0 µg/L
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
40 40
41 41
42 42
43 43
44 44
45 45
46 46
47 47
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
- 4 -
26000 RPA, data
4/27/2021
REASONABLE POTENTIAL ANALYSIS
Pa11 Par12
Copper Cyanide
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 3/15/2016 7 7 Std Dev.4.0377 1 3/15/2016 <5 5 Std Dev.0.0000
2 6/13/2017 5 5 Mean 6.7500 2 6/13/2017 <5 5 Mean 5.00
3 12/12/2016 22 22 C.V.0.5982 3 3/18/2021 <5 5 C.V. (default)0.6000
4 3/13/2017 9 9 n 20 4 n 3
5 6/12/2017 6 6 5
6 9/18/2017 4 4 Mult Factor =1.36 6 Mult Factor =3.00
7 12/11/2017 5 5 Max. Value 22.00 ug/L 7 Max. Value 5.0 ug/L
8 3/12/2018 7 7 Max. Pred Cw 29.92 ug/L 8 Max. Pred Cw 15.0 ug/L
9 6/11/2018 5 5 9
10 9/24/2018 4 4 10
11 12/10/2018 6 6 11
12 3/11/2019 5 5 12
13 6/10/2019 5 5 13
14 9/16/2019 3 3 14
15 12/11/2019 7 7 15
16 3/9/2020 11 11 16
17 6/8/2020 5 5 17
18 9/21/2020 8 8 18
19 12/14/2020 6 6 19
20 3/18/2021 <10 5 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
40 40
41 41
42 42
43 43
44 44
45 45
46 46
47 47
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
- 5 -
26000 RPA, data
4/27/2021
REASONABLE POTENTIAL ANALYSIS
Par14 Par17 & Par18
Lead Nickel
Date BDL=1/2DL Results Date Data BDL=1/2DL Results
1 3/15/2016 <10 5 Std Dev.0.0000 1 3/15/2016 <10 5 Std Dev.0.0000
2 6/13/2017 <10 5 Mean 5.0000 2 6/13/2017 <10 5 Mean 5.0000
3 3/18/2021 <10 5 C.V. (default)0.6000 3 3/18/2021 <10 5 C.V. (default)0.6000
4 n 3 4 n 3
5 5
6 Mult Factor =3.00 6 Mult Factor =3.00
7 Max. Value 5.000 ug/L 7 Max. Value 5.0 µg/L
8 Max. Pred Cw 15.000 ug/L 8 Max. Pred Cw 15.0 µg/L
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
40 40
41 41
42 42
43 43
44 44
45 45
46 46
47 47
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
Use "PASTE
SPECIAL-Values"
then "COPY" .
Maximum data
points = 58
Use "PASTE SPECIAL-
Values" then "COPY"
. Maximum data
points = 58
- 6 -
26000 RPA, data
4/27/2021
REASONABLE POTENTIAL ANALYSIS
Par19 Par20
Selenium Silver
Date Data BDL=1/2DL Results Date Data BDL=1/2DL Results
1 3/15/2016 <10 5 Std Dev.0.0000 1 3/15/2016 <5 2.5 Std Dev.1.4434
2 6/13/2017 <10 5 Mean 5.0000 2 6/13/2017 <5 2.5 Mean 3.3333
3 3/18/2021 <10 5 C.V. (default)0.6000 3 3/18/2021 <10 5 C.V. (default)0.6000
4 n 3 4 n 3
5 5
6 Mult Factor =3.00 6 Mult Factor =3.00
7 Max. Value 5.0 ug/L 7 Max. Value 5.000 ug/L
8 Max. Pred Cw 15.0 ug/L 8 Max. Pred Cw 15.000 ug/L
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
40 40
41 41
42 42
43 43
44 44
45 45
46 46
47 47
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
Use "PASTE
SPECIAL-Values"
then "COPY" .
Maximum data
points = 58
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points =
58
- 7 -
26000 RPA, data
4/27/2021
REASONABLE POTENTIAL ANALYSIS
Par21
Zinc
Date Data BDL=1/2DL Results
1 3/15/2016 39 39 Std Dev.41.2277
2 6/13/2017 29 29 Mean 36.4000
3 12/12/2016 27 27 C.V.1.1326
4 3/13/2017 30 30 n 20
5 6/15/2017 31 31
6 9/18/2017 18 18 Mult Factor =1.66
7 12/11/2017 208 208 Max. Value 208.0 ug/L
8 3/12/2018 <100 50 Max. Pred Cw 345.3 ug/L
9 6/11/2018 21 21
10 9/24/2018 18 18
11 12/10/2018 20 20
12 3/11/2019 17 17
13 6/10/2019 19 19
14 9/17/2019 26 26
15 12/11/2019 35 35
16 3/9/2020 25 25
17 6/8/2020 30 30
18 9/21/2020 33 33
19 12/14/2020 32 32
20 3/18/2021 20 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
- 8 -
26000 RPA, data
4/27/2021
Tabor City WWTP ≥Outfall 001
NC0026000 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators Qw = 1.1 MGD
MAXIMUM DATA POINTS = 58
Qw (MGD) = 1.1000 WWTP/WTP Class:III COMBINED HARDNESS (mg/L)
1Q10S (cfs) = 0.00 IWC% @ 1Q10S = 100 Acute = 63.33 mg/L
7Q10S (cfs) = 0.00 IWC% @ 7Q10S = 100 Chronic = 63.33 mg/L
7Q10W (cfs) = 0.00 IWC% @ 7Q10W = 100
30Q2 (cfs) = 0.00 IWC% @ 30Q2 = 100
Avg. Stream Flow, QA (cfs) = 1.00 IW%C @ QA = 63.03142329
Receiving Stream:Stream Class:C-Sw
PARAMETER RECOMMENDED ACTION
Chronic Applied
Standard Acute n # Det.Max Pred Cw
Acute (FW):340.0
Arsenic C 150 FW 340 ug/L
3 0 15.0 Chronic (FW):150.0
C.V. (default)Max MDL = 10
Arsenic C 10 HH/WS ug/L Note: n ≤ 9 NO DETECTS Chronic (HH):15.9
Limited data set Max MDL = 10
Acute:65.00
Beryllium NC 6.5 FW 65 ug/L 3 0 15.00
Note: n ≤ 9 C.V. (default)Chronic:6.50
Limited data set NO DETECTS Max MDL = 10
Acute:7.290
Cadmium NC 1.1907 FW 7.2899 ug/L 3 0 15.000
Note: n ≤ 9 C.V. (default)Chronic:1.191
Limited data set NO DETECTS Max MDL = 10
Acute:NO WQS
Total Phenolic Compounds NC 300 A ug/L 3 1 51.0
Note: n ≤ 9 C.V. (default)Chronic:300.0
Limited data set No value > Allowable Cw
Acute:1,937.8
Chromium III NC 252.0696 FW 1937.8129 µg/L 0 0 N/A
Chronic:252.1
Acute:16.0
Chromium VI NC 11 FW 16 µg/L 0 0 N/A
Chronic:11.0
Chromium, Total NC µg/L 3 0 15.0
Note: n ≤ 9 C.V. (default)
Limited data set NO DETECTS Max MDL = 10
Acute:25.14
Copper NC 17.4388 FW 25.1413 ug/L 20 19 29.92
Chronic:17.44
1 value(s) > Allowable Cw
Acute:22.0
Cyanide NC 5 FW 22 10 ug/L 3 0 15.0
Note: n ≤ 9 C.V. (default)Chronic:5.0
Limited data set NO DETECTS Max MDL = 10PQLUNITSTYPE
Allowable Cw
REASONABLE POTENTIAL RESULTSNC STANDARDS OR EPA CRITERIA
UT to Grissett Swamp HUC 03040206
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
All values non-detect < 5 ug/L and < 10 ug/L - No
monitoring required. Permittee shall report to PQL of
5 ug/L.
All values reported non-detect < 2 ug/L and < 10 ug/L -
No monitoring required. Permittee shall report to PQL
of 1 ug/L.
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
All values reported < 5 ug/L - No monitoring required
Max reported value = 5
RP shown - apply Monthly Monitoring with Limit
All values non-detect < 5 ug/L and < 10 ug/L - No
monitoring required. Permittee shall report to PQL of
5 ug/L.
Page 1 of 2
26000 RPA, rpa
4/27/2021
Tabor City WWTP ≥Outfall 001
NC0026000 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators Qw = 1.1 MGD
Acute:212.856
Lead NC 8.2947 FW 212.8561 ug/L 3 0 15.000
Note: n ≤ 9 C.V. (default)Chronic:8.295
Limited data set NO DETECTS Max MDL = 10
Acute (FW):735.9
Nickel NC 81.7396 FW 735.9342 µg/L
3 0 15.0 Chronic (FW):81.7
Note: n ≤ 9 C.V. (default)Max MDL = 10
Nickel NC 25.0000 WS µg/L Limited data set NO DETECTS Chronic (WS):25.0
Max MDL = 10
Acute:56.0
Selenium NC 5 FW 56 ug/L 3 0 15.0
Note: n ≤ 9 C.V. (default)Chronic:5.0
Limited data set NO DETECTS Max MDL = 10
Acute:1.466
Silver NC 0.06 FW 1.4663 ug/L 3 0 15.000
Note: n ≤ 9 C.V. (default)Chronic:0.060
Limited data set NO DETECTS Max MDL = 10
Acute:276.3
Zinc NC 278.5735 FW 276.3133 ug/L 20 19 345.3
Chronic:278.6
No value > Allowable Cw
All values reported non-detect < 10 ug/L - No
monitoring required. Permittee shall report to PQL of
1 ug/L.
All values reported non-detect < 10 ug/L - No
monitoring required. Permittee shall report to PQL of
2 ug/L.
RP shown - apply Monthly Monitoring with Limit
All values reported non-detect < 5 ug/L and < 10 ug/L
- No monitoring required. Permittee shall report to
PQL of 1 ug/L.
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Page 2 of 2
26000 RPA, rpa
4/27/2021
Permit No. NC0026000
Page 1 of 4

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/l
(Dissolved)
Chronic FW, µg/l
(Dissolved)
Acute SW, µg/l
(Dissolved)
Chronic SW, µg/l
(Dissolved)

Arsenic 340 150 69 36
Beryllium 65 6.5 --- ---
Cadmium Calculation Calculation 40 8.8
Chromium III Calculation Calculation --- ---
Chromium VI 16 11 1100 50
Copper Calculation Calculation 4.8 3.1
Lead Calculation Calculation 210 8.1
Nickel Calculation Calculation 74 8.2
Silver Calculation 0.06 1.9 0.1
Zinc Calculation Calculation 90 81

Table 1 Notes:
1. FW= Freshwater, SW= Saltwater
2. Calculation = Hardness dependent standard
3. Only the aquatic life standards listed above are expressed in dissolved form. Aquatic life
standards for Mercury and selenium are still expressed as Total Recoverable Metals due to
bioaccumulative concerns (as are all human health standards for all metals). It is still necessary
to evaluate total recoverable aquatic life and human health standards listed in 15A NCAC
2B.0200 (e.g., arsenic at 10 µg/l for human health protection; cyanide at 5 µg/L and fluoride at
1.8 mg/L for aquatic life protection).

Table 2. Dissolved Freshwater Standards for Hardness-Dependent Metals
The Water Effects Ratio (WER) is equal to one unless determined otherwise under 15A
NCAC 02B .0211 Subparagraph (11)(d)

Metal NC Dissolved Standard, µg/l
Cadmium, Acute WER*{1.136672-[ln hardness](0.041838)} ∙ e^{0.9151 [ln 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[ln hardness]-1.700}
Copper, Chronic WER*0.960 ∙ e^{0.8545[ln hardness]-1.702}
Lead, Acute WER*{1.46203-[ln hardness](0.145712)} ∙ e^{1.273[ln hardness]-1.460}
Lead, Chronic WER*{1.46203-[ln hardness](0.145712)} ∙ e^{1.273[ln hardness]-4.705}
Nickel, Acute WER*0.998 ∙ e^{0.8460[ln hardness]+2.255}
Nickel, Chronic WER*0.997 ∙ e^{0.8460[ln hardness]+0.0584}
Permit No. NC0026000
Page 2 of 4

Silver, Acute WER*0.85 ∙ e^{1.72[ln hardness]-6.59}
Silver, Chronic Not applicable
Zinc, Acute WER*0.978 ∙ e^{0.8473[ln hardness]+0.884}
Zinc, Chronic WER*0.986 ∙ e^{0.8473[ln hardness]+0.884}

General Information on the Reasonable Potential Analysis (RPA)
The RPA process itself did not change as the result of the new metals standards. However, application of
the dissolved and hardness-dependent standards requires additional consideration in order to establish the
numeric standard for each metal of concern of each individual discharge.
The hardness-based standards require some knowledge of the effluent and instream (upstream) hardness
and so must be calculated case-by-case for each discharge.
Metals limits must be expressed as ‘total recoverable’ metals in accordance with 40 CFR 122.45(c). The
discharge-specific standards must be converted to the equivalent total values for use in the RPA
calculations. We will generally rely on default translator values developed for each metal (more on that
below), but it is also possible to consider case-specific translators developed in accordance with
established methodology.

RPA Permitting Guidance/WQBELs for Hardness-Dependent Metals - Freshwater
The RPA is designed to predict the maximum likely effluent concentrations for each metal of concern,
based on recent effluent data, and calculate the allowable effluent concentrations, based on applicable
standards and the critical low-flow values for the receiving stream.
If the maximum predicted value is greater than the maximum allowed value (chronic or acute), the
discharge has reasonable potential to exceed the standard, which warrants a permit limit in most cases. If
monitoring for a particular pollutant indicates that the pollutant is not present (i.e. consistently below
detection level), then the Division may remove the monitoring requirement in the reissued permit.
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.

Permit No. NC0026000
Page 3 of 4

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 1Q10 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.

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)
s7Q10 = 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:
1Q10 = used in the equation to protect aquatic life from acute toxicity
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/l], 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.

Permit No. NC0026000
Page 4 of 4

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 or (Ca+Mg)]
61 Data provided in PPAs
Average Upstream Hardness (mg/L)
[Total as, CaCO3 or (Ca+Mg)]
25 Default value used
7Q10 summer (cfs) 0 NPDES Files
1Q10 (cfs) 0 Calculated in RPA
Permitted Flow (MGD) 1.1 NPDES Files

Date: _____3/16/2021________________________

Permit Writer: ______Nick Coco________________
NC0026000 Tabor City WWTP 3/15/2021
Month RR (%)Month RR (%)Month RR (%)Month RR (%)
February-17 98.01 August-19 97.49 February-17 95.95 August-19 95.73
March-17 97.55 September-19 98.32 March-17 88.95 September-19 96.98
April-17 97.79 October-19 97.92 April-17 93.33 October-19 94.60
May-17 97.91 November-19 97.49 May-17 96.00 November-19 81.91
June-17 98.88 December-19 96.81 June-17 93.44 December-19 93.92
July-17 98.53 January-20 96.18 July-17 93.55 January-20 88.79
August-17 97.55 February-20 95.12 August-17 92.18 February-20 85.73
September-17 96.82 March-20 94.87 September-17 95.09 March-20 91.94
October-17 98.57 April-20 95.38 October-17 96.74 April-20 96.25
November-17 99.06 May-20 94.00 November-17 98.13 May-20 92.37
December-17 98.97 June-20 95.52 December-17 95.03 June-20 94.13
January-18 98.41 July-20 95.60 January-18 92.53 July-20 96.25
February-18 98.57 August-20 97.43 February-18 95.97 August-20 97.18
March-18 98.63 September-20 97.70 March-18 93.73 September-20 96.55
April-18 98.71 October-20 95.66 April-18 97.20 October-20 97.02
May-18 98.59 November-20 97.36 May-18 97.18 November-20 92.95
June-18 96.73 December-20 94.04 June-18 95.18 December-20 89.31
July-18 98.46 January-21 95.06 July-18 97.55 January-21
August-18 98.02 February-21 August-18 95.54 February-21
September-18 97.76 March-21 September-18 92.80 March-21
October-18 98.17 April-21 October-18 97.44 April-21
November-18 97.77 May-21 November-18 83.38 May-21
December-18 96.84 June-21 December-18 93.87 June-21
January-19 97.15 July-21 January-19 93.74 July-21
February-19 97.25 August-21 February-19 89.92 August-21
March-19 93.93 September-21 March-19 77.43 September-21
April-19 93.39 October-21 April-19 74.76 October-21
May-19 98.07 November-21 May-19 97.07 November-21
June-19 97.59 December-21 June-19 96.28 December-21
July-19 97.55 January-22 July-19 92.92 January-22
Overall BOD removal rate 97.15 Overall TSSD removal rate 93.07
BOD monthly removal rate TSS monthly removal rate
4/26/21 WQS = 12 ng/L V:2013-6
Facility Name
/Permit No. :
Total Mercury 1631E PQL = 0.5 ng/L 7Q10s = 0.000 cfs WQBEL = 12.00 ng/L
Date Modifier Data Entry Value Permitted Flow = 1.100 47 ng/L
2/14/17 2.38 2.38
3/14/17 2.37 2.37
4/11/17 1.72 1.72
5/9/17 4.67 4.67
6/15/17 3.3 3.3
7/18/17 8.44 8.44
8/15/17 5.04 5.04
9/19/17 5.15 5.15
10/19/17 2.16 2.16
11/14/17 2.48 2.48
12/12/17 5.26 5.26 3.9 ng/L - Annual Average for 2017
1/23/18 2.78 2.78
2/13/18 1.14 1.14
3/13/18 4.86 4.86
4/19/18 2.47 2.47
5/15/18 8.65 8.65
6/12/18 10.7 10.7
7/18/18 1.11 1.11
8/14/18 36 36
9/25/18 36.6 36.6
10/9/18 2.84 2.84
11/13/18 4.34 4.34
12/11/18 7.09 7.09 9.9 ng/L - Annual Average for 2018
1/15/19 6.4 6.4
2/12/19 7.91 7.91
3/12/19 15.8 15.8
4/23/19 3.02 3.02
Tabor City WWTP/NC0026000 Annual Limit 12 ng/L with
Quarterly Monitoring
MERCURY WQBEL/TBEL EVALUATION
No MMP Required
5/27/19 3.27 3.27
6/11/19 2.69 2.69
7/16/19 4.57 4.57
8/15/19 12.8 12.8
9/17/19 3.46 3.46
10/15/19 2.18 2.18
11/12/19 2.91 2.91
12/12/19 1.36 1.36 5.5 ng/L - Annual Average for 2019
1/7/20 3.43 3.43
2/18/20 2.64 2.64
3/10/20 2.36 2.36
4/14/20 1.66 1.66
5/12/20 2.78 2.78
6/8/20 5.88 5.88
7/14/20 6.39 6.39
8/11/20 8.35 8.35
9/22/20 3.67 3.67
10/13/20 1.42 1.42
11/17/20 56.6 56.6 > TBEL
11/25/20 4.07 4.07
12/15/20 <1 0.5 7.7 ng/L - Annual Average for 2020
1/12/21 2.08 2.08
3/18/21 1.78 1.78 1.9 ng/L - Annual Average for 2021
Tabor City WWTP/NC0026000
Mercury Data Statistics (Method 1631E)
2017 2018 2019 2020 2021
# of Samples 11 12 12 13 2
Annual Average, ng/L 3.9 9.9 5.5 7.67 1.93
Maximum Value, ng/L 8.44 36.60 15.80 56.6 2.08
TBEL, ng/L
WQBEL, ng/L 12.0
47
NH3/TRC WLA Calculations
Facility: Tabor City WWTP
PermitNo. NC0026000
Prepared By: Nick Coco
Enter Design Flow (MGD):1.1
Enter s7Q10 (cfs):0
Enter w7Q10 (cfs):0
Total Residual Chlorine (TRC)Ammonia (Summer)
Daily Maximum Limit (ug/l)Monthly Average Limit (mg NH3-N/l)
s7Q10 (CFS)0 s7Q10 (CFS)0
DESIGN FLOW (MGD)1.1 DESIGN FLOW (MGD)1.1
DESIGN FLOW (CFS)1.705 DESIGN FLOW (CFS)1.705
STREAM STD (UG/L)17.0 STREAM STD (MG/L)1.0
Upstream Bkgd (ug/l)0 Upstream Bkgd (mg/l)0.22
IWC (%)100.00 IWC (%)100.00
Allowable Conc. (ug/l)17 Allowable Conc. (mg/l)1.0
Same as current permit limit. Maintain limit.Same as current permit limit. Maintain limit.
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/l)
Fecal Coliform w7Q10 (CFS)0
Monthly Average Limit:200/100ml DESIGN FLOW (MGD)1.1
(If DF >331; Monitor)DESIGN FLOW (CFS)1.705
(If DF<331; Limit)STREAM STD (MG/L)1.8
Dilution Factor (DF)1.00 Upstream Bkgd (mg/l)0.22
IWC (%)100.00
Allowable Conc. (mg/l)1.8
Same as current permit limit. Maintain limit.
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/l to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/l, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals)
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis)
If the allowable ammonia concentration is > 35 mg/L, no limit shall be imposed
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non-Muni)

MRs Between and Violation Category:Program Category:
Param Name County:Subbasin:%Violation Action:
Major Minor:%
Permit:
Facility Name:
Region:--NC0026000
%%
%
%
Limit Violation %
%
2 2017 3 2021
MONITORING REPORT(MR) VIOLATIONS for:03/15/21Report Date:1Page:of 22
PERMIT:NC0026000 FACILITY:Town of Tabor City - Tabor City WWTP COUNTY:Columbus REGION:Wilmington
%
Over
UNIT OF
MEASURE VIOLATION ACTIONVIOLATION TYPECALCULATED
VALUELIMITFREQUENCYVIOLATION
DATEPARAMETERLOCATIONMONITORING
REPORT
Limit Violation
OUTFALL
04 - 2019 001 Effluent BOD, 5-Day (20 Deg. C) -
Concentration
04/06/19 3 X week Weekly Average
Exceeded
Proceed to
Enforcement Case
9.67.5mg/l 28
04 - 2019 001 Effluent BOD, 5-Day (20 Deg. C) -
Concentration
04/13/19 3 X week Weekly Average
Exceeded
Proceed to
Enforcement Case
8.97.5mg/l 18.7
04 - 2019 001 Effluent BOD, 5-Day (20 Deg. C) -
Concentration
04/20/19 3 X week Weekly Average
Exceeded
Proceed to
Enforcement Case
8.77.5mg/l 16
04 - 2019 001 Effluent BOD, 5-Day (20 Deg. C) -
Concentration
04/30/19 3 X week Monthly Average
Exceeded
Proceed to
Enforcement Case
6.155mg/l 23
05 - 2020 001 Effluent BOD, 5-Day (20 Deg. C) -
Concentration
05/09/20 3 X week Weekly Average
Exceeded
No Action, BPJ7.67.5mg/l 1.3
03 - 2017 001 Effluent Chlorine, Total Residual 03/14/17 3 X week Daily Maximum
Exceeded
No Action, BPJ2217ug/l 29.4
03 - 2017 001 Effluent Chlorine, Total Residual 03/22/17 3 X week Daily Maximum
Exceeded
No Action, BPJ3017ug/l 76.5
03 - 2017 001 Effluent Chlorine, Total Residual 03/27/17 3 X week Daily Maximum
Exceeded
No Action, BPJ3617ug/l 111.8
04 - 2017 001 Effluent Chlorine, Total Residual 04/03/17 3 X week Daily Maximum
Exceeded
No Action, BPJ3817ug/l 123.5
04 - 2017 001 Effluent Chlorine, Total Residual 04/04/17 3 X week Daily Maximum
Exceeded
No Action, BPJ2317ug/l 35.3
04 - 2017 001 Effluent Chlorine, Total Residual 04/10/17 3 X week Daily Maximum
Exceeded
No Action, BPJ2717ug/l 58.8
04 - 2017 001 Effluent Chlorine, Total Residual 04/11/17 3 X week Daily Maximum
Exceeded
No Action, BPJ2017ug/l 17.6
04 - 2017 001 Effluent Chlorine, Total Residual 04/18/17 3 X week Daily Maximum
Exceeded
No Action, BPJ2817ug/l 64.7
04 - 2017 001 Effluent Chlorine, Total Residual 04/25/17 3 X week Daily Maximum
Exceeded
No Action, BPJ3117ug/l 82.4
04 - 2017 001 Effluent Chlorine, Total Residual 04/26/17 3 X week Daily Maximum
Exceeded
No Action, BPJ3317ug/l 94.1
05 - 2017 001 Effluent Chlorine, Total Residual 05/01/17 3 X week Daily Maximum
Exceeded
No Action, BPJ1817ug/l 5.9
MRs Between and Violation Category:Program Category:
Param Name County:Subbasin:%Violation Action:
Major Minor:%
Permit:
Facility Name:
Region:--NC0026000
%%
%
%
Limit Violation %
%
2 2017 3 2021
MONITORING REPORT(MR) VIOLATIONS for:03/15/21Report Date:21Page:of 22
PERMIT:NC0026000 FACILITY:Town of Tabor City - Tabor City WWTP COUNTY:Columbus REGION:Wilmington
%
Over
UNIT OF
MEASURE VIOLATION ACTIONVIOLATION TYPECALCULATED
VALUELIMITFREQUENCYVIOLATION
DATEPARAMETERLOCATIONMONITORING
REPORT
Limit Violation
OUTFALL
12 - 2020 001 Effluent Chlorine, Total Residual 12/02/20 3 X week Daily Maximum
Exceeded
No Action, BPJ2017ug/l 17.6
12 - 2020 001 Effluent Chlorine, Total Residual 12/07/20 3 X week Daily Maximum
Exceeded
No Action, BPJ3117ug/l 82.4
12 - 2020 001 Effluent Chlorine, Total Residual 12/08/20 3 X week Daily Maximum
Exceeded
No Action, BPJ2017ug/l 17.6
12 - 2020 001 Effluent Chlorine, Total Residual 12/15/20 3 X week Daily Maximum
Exceeded
No Action, BPJ4217ug/l 147.1
12 - 2020 001 Effluent Chlorine, Total Residual 12/22/20 3 X week Daily Maximum
Exceeded
No Action, BPJ2317ug/l 35.3
01 - 2021 001 Effluent Chlorine, Total Residual 01/06/21 3 X week Daily Maximum
Exceeded
No Action, BPJ2417ug/l 41.2
01 - 2021 001 Effluent Chlorine, Total Residual 01/12/21 3 X week Daily Maximum
Exceeded
No Action, BPJ2017ug/l 17.6
01 - 2021 001 Effluent Chlorine, Total Residual 01/13/21 3 X week Daily Maximum
Exceeded
No Action, BPJ2117ug/l 23.5
01 - 2021 001 Effluent Chlorine, Total Residual 01/14/21 3 X week Daily Maximum
Exceeded
No Action, BPJ2917ug/l 70.6
01 - 2021 001 Effluent Chlorine, Total Residual 01/19/21 3 X week Daily Maximum
Exceeded
No Action, BPJ1817ug/l 5.9
01 - 2021 001 Effluent Chlorine, Total Residual 01/27/21 3 X week Daily Maximum
Exceeded
No Action, BPJ1917ug/l 11.8
08 - 2018 001 Effluent Coliform, Fecal MF, MFC
Broth, 44.5 C
08/31/18 4 X week Monthly Geometric Mean
Exceeded
Proceed to NOD209.26200#/100ml 4.6
06 - 2020 001 Effluent Coliform, Fecal MF, MFC
Broth, 44.5 C
06/27/20 4 X week Weekly Geometric Mean
Exceeded
Proceed to NOD414.51400#/100ml 3.6
07 - 2020 001 Effluent Coliform, Fecal MF, MFC
Broth, 44.5 C
07/25/20 4 X week Weekly Geometric Mean
Exceeded
Proceed to
Enforcement Case
521.63400#/100ml 30.4
07 - 2020 001 Effluent Nitrogen, Ammonia Total (as
N) - Concentration
07/25/20 3 X week Weekly Average
Exceeded
Proceed to
Enforcement Case
5.073mg/l 68.9
07 - 2020 001 Effluent Nitrogen, Ammonia Total (as
N) - Concentration
07/31/20 3 X week Monthly Average
Exceeded
Proceed to
Enforcement Case
1.21mg/l 20
MRs Between and Violation Category:Program Category:
Param Name County:Subbasin:%Violation Action:
Major Minor:%
Permit:
Facility Name:
Region:--NC0026000
%%
%
%
Limit Violation %
%
2 2017 3 2021
MONITORING REPORT(MR) VIOLATIONS for:03/15/21Report Date:22Page:of 22
PERMIT:NC0026000 FACILITY:Town of Tabor City - Tabor City WWTP COUNTY:Columbus REGION:Wilmington
%
Over
UNIT OF
MEASURE VIOLATION ACTIONVIOLATION TYPECALCULATED
VALUELIMITFREQUENCYVIOLATION
DATEPARAMETERLOCATIONMONITORING
REPORT
Limit Violation
OUTFALL
03 - 2019 001 Effluent Solids, Total Suspended -
Concentration
03/09/19 3 X week Weekly Average
Exceeded
Proceed to NOV52.3345mg/l 16.3
04 - 2019 001 Effluent Solids, Total Suspended -
Concentration
04/13/19 3 X week Weekly Average
Exceeded
Proceed to
Enforcement Case
71.7745mg/l 59.5
Effluent Toxicity Report Form -Chronic Fathead Minnow Multi -Concentration Test
Date:11/25/2020
Facility: Tabor City NPDES # NCOO 26000
Laboratory:
x
ritech, Inc.
Signature of Operator in Responsible Charge
Signature of Laboratory Supervisor
Pipe #: 001 County: Columbus
Comments!
MAIL ORIGINAL TO:
Water Sciences Section
Aquatic Toxicology Unit
Division of Water Quality
1621 Mail Service Center
Raleigh, NC 27699-1621
Test Initiation Date/Time 11/17/2020
% Eff.
(Control )
Repl.
Surviving #
Original #
Wt/original (mg)
22,5
Surviving #
Original #
Wt/original (mg)
45
Surviving #
Original #
Wt/original (mg)
75
Surviving #
Original #
Wt/original (mg)
90
Surviving #
Original #
Wt/original (mg)
100
Surviving #
Original #
Wt/original (mg)
Water Quality Data
Control
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
High Concentration
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mg/L)
Alkalinity (mg/L)
conductivity (umhos/cm)
Chlorine(mg/L)
Temp. at Receipt (°C)
Dilution H2O Batch #
Hardness (mg/L)
Alkalinity (mg/L)
conductivity (umhos/cm)
1
2
4:13 PM
3
4
Avg Wt/Surv. Control
10
10
10
10
10
10
10
10
0.684
0.672
0.605
0.569
10
10
10
10
10
10
10
10
0.575
0.670
0.579
0.754
10
9
10
10
10
10
10
10
0.725
0.448
0.531
0.621
10
9
10
10
10
10
10
10
0.516
0.723
0.734
0.581
10
10
10
10
10
10
10
10
0.640
0.681
0.653
0.751
8
10
10
10
10
10
10
10
0.521
0.662
0.643
0.569
Day
% Survival
0.633
100.0
Test Organisms
7 Cultured In -House
r Outside Supplier
Avg Wt (mg)) 0.633 Hatch Date: 11/16/20
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
100.0
0.645
97.5
0.581
97.5
0.639
100.0
0.681
95.0
0.599
Hatch Time: 3:00 pm CT
0
1
2
3
7.85 /
7.78
7.71 /
7.56
7.80 /
7.65
7.77 /
7.85
7.79 /
7.55
7.88 /
7.87
7.77 /
7.45
8.12 /
7.88
8.18 /
7.53
8.11 /
, 7.73
8.07 /
7.77
7.98 /
7.02
8,13 /
7.58
8.00 /
7.34
24.3 /
25.3
24.1 /
24.8
24.5 /
24.5
25.3 /
24.1
25.0 /
24.7
24.4 /
24,5
24.8 /
25.2
0
2
7.63 /
8.06
7.77 /
8.07
7.51 /
8.04
7.75 /
8.14
8.00 /
7.99
7.79 /
8.04
7.86 /
8.03
8.36 /
7.80
8.13 /
7,53
8.46 /
7.80
8.31 /
8.05
8.01 /
7.40
8.45 /
7.50
8.03 /
7.59
25.0 /
24.3
25.4 /
24.8
24.8 /
24.8
25.8 /
24.8
25.6 /
24,9
25.2 /
24.7
25.4 /
24.1
1
2
3
11/16/2020
11/18/2020
11/19/2020
24.0
24.0
24.0
52
54
54
82
84
91
329
361
376
<0.1
<0.1
<0.1
1.6
1.8
0.7
1519
46
31
174
1520
1521
44
46
32
31
171
177
Survival Growth
100
Normal 1 !°
Hom. Var. ri
NOEC 100
LOEC >100 >100
ChV >100 >100
Method Steel's Dunnet's
Overall Result
ChV
>100
Stats
Conc.
22.5
45
75
90
100
Survival
Critical Calculated
10 18
10 16
10 16
10 18
Growth
Critical Calculated
2.41-0.2012
2.41 0.8591
2.41-0.1006
2.41-0.8172
10 16
2.41 0.5658

EPA
United States Environmental Protection Agency
Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 N 52 NC0026000 20/12/03 C S31112171819 20
21 66
Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved-------------------
2 D N67707172 73 74 75 80
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Tabor City WWTP
244 US Hwy 701 Bypass N
Tabor City NC 28463
Entry Time/Date Permit Effective Date
Exit Time/Date Permit Expiration Date
10:00AM 20/12/03 15/12/01
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Stephanie Moore//910-617-1353 /
Stephanie Moore/ORC/910-617-1353/
Other Facility Data
12:00PM 20/12/03 19/08/31
Name, Address of Responsible Official/Title/Phone and Fax Number
Al Jack Leonard,PO Box 655 Tabor City NC 284630655/Town
Manager/910-653-3458/9106533970
Contacted
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenance Records/Reports
Self-Monitoring Program Sludge Handling Disposal Facility Site Review Compliance Schedules
Effluent/Receiving Waters Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s)Agency/Office/Phone and Fax Numbers Date
Helen I Perez DWR/WIRO WQ/910-796-7387/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
Tom Tharrington DWR/WIRO WQ/ - - /
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#1
NPDES yr/mo/day
20/12/03
Inspection Type
C3111218
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
A routine compliance inspection of the Tabor City WWTP was conducted on December 3, 2020. The
purpose of the evaluation was to verify that the facility is operating in compliance with the conditions
and limitations specified in Permit NC0026000.
This extended aeration plant is permitted for 1.1 MGD and currently averages 0.45 MGD. Overall
maintenance of the plant has improved since last inspection. All required documentation requested
was readily available. A file review of the last 12-month period indicates two violations issued: 1 NOD
for weekly fecal exceedance in 6/20 and 1 NOV for weekly, monthly Ammonia and weekly fecal
exceedances for 7/20.
The Town of Tabor City WWTP is under a Corrective Action Plan (CAP), permit condition A.(6). An
Authorization to Construct (ATC) was issued by DWR on February 15, 2019 to address some of the
issues in the CAP. A construction update was received by the Wilmington Regional Office from
Municipal Engineering Services on May 7, 2019 and another on the day of the inspection. Project
milestones have been delayed due to discovered electrical issues, Hurricane Florence, COVID-19
isssues and lack of funds.
The areas of contruction have been the new upsized force main from the influent pump station to the
EQ basin and the gravity fed piping between the upper clarifier and aeration basin. The new floating
aerator for the digester has been ordered and installation planned by the end of January 2021. The
Town is waiting on delivery of the 4 submersible pumps and respective control panels for the influent
pump station (PS). Retrofitting the existing influent PS wet well, installing the new pumps and installing
the new automated valve from the influent PS to EQ basin are planned for April 2021. Currently,
Phase-2 is being added to the scope of work which will include the new chlorine contact chamber and
rehabilitation work for the upper clarifier.
The facility is compliant with NPDES Permit NC0026000. Please review the comment sections of the
inspection report for more details
NC0026000 17 (Cont.)
Page#2
Permit:NC0026000
Inspection Date:12/03/2020
Owner - Facility:
Inspection Type:
Tabor City WWTP
Compliance Evaluation
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
application?
Is the facility as described in the permit?
# Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
The permit expired 8-31-2019. A renewal application was received by the Central Office in
March 2019 and is currently under review.
Comment:
Compliance Schedules Yes No NA NE
Is there a compliance schedule for this facility?
Is the facility compliant with the permit and conditions for the review period?
A revised CAP was received from the Town on 5/23/17and a Requested Response to DWR
was recieved on 7/27/17. DWR approved an Authorization to Construct on 2/15/19. A draft
milestone schedule was received from Municipal Engineering Services on 5/7/19 and a
construction update on 12/3/20.
Comment:
Record Keeping Yes No NA NE
Are records kept and maintained as required by the permit?
Is all required information readily available, complete and current?
Are all records maintained for 3 years (lab. reg. required 5 years)?
Are analytical results consistent with data reported on DMRs?
Is the chain-of-custody complete?
Dates, times and location of sampling
Name of individual performing the sampling
Results of analysis and calibration
Dates of analysis
Name of person performing analyses
Transported COCs
Are DMRs complete: do they include all permit parameters?
Has the facility submitted its annual compliance report to users and DWQ?
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator
on each shift?
Is the ORC visitation log available and current?
Is the ORC certified at grade equal to or higher than the facility classification?
Page#3
Permit:NC0026000
Inspection Date:12/03/2020
Owner - Facility:
Inspection Type:
Tabor City WWTP
Compliance Evaluation
Record Keeping Yes No NA NE
Is the backup operator certified at one grade less or greater than the facility classification?
Is a copy of the current NPDES permit available on site?
Facility has copy of previous year's Annual Report on file for review?
Documentation of DMRs, COCs and lab results were readily available and complete.
Operation and maintenance check lists are used for documentation of daily plant activities.
Comment:
Laboratory Yes No NA NE
Are field parameters performed by certified personnel or laboratory?
Are all other parameters(excluding field parameters) performed by a certified lab?
# Is the facility using a contract lab?
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
Celsius)?
Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
Field testing is conducted by operators under the Envirolink, Certification # 5212, and bench
sheets and calibrations for the field testing were complete. Envirochem, Certification #94, is
Envirolink's contract lab. The Town uses McGill for hauling sludge from the facility
approximatele every 6 months. The Pre-Acceptance & Annual Lab Analyses for October
2020 residuals were reviewed.
Comment:
Flow Measurement - Influent Yes No NA NE
# Is flow meter used for reporting?
Is flow meter calibrated annually?
Is the flow meter operational?
(If units are separated) Does the chart recorder match the flow meter?
The influent flow meter was calibrated on May 20, 2020 by J.S. Dismuke Co.Comment:
Flow Measurement - Effluent Yes No NA NE
# Is flow meter used for reporting?
Is flow meter calibrated annually?
Is the flow meter operational?
(If units are separated) Does the chart recorder match the flow meter?
The effluent flow meter was calibrated on May 20, 2020 by J.S. Dismuke Co. and is used for
DMR reporting.
Comment:
Standby Power Yes No NA NE
Page#4
Permit:NC0026000
Inspection Date:12/03/2020
Owner - Facility:
Inspection Type:
Tabor City WWTP
Compliance Evaluation
Standby Power Yes No NA NE
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
Is the generator tested under load?
Was generator tested & operational during the inspection?
Do the generator(s) have adequate capacity to operate the entire wastewater site?
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
Is the generator fuel level monitored?
The generator is auto tested weekly. The Town has a contract with Duke Energy to switch to
generator power during peak times in the summer and winter. Preventive maintenance is
performed once a year.
Comment:
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping?
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable
Solids, pH, DO, Sludge Judge, and other that are applicable?
Process control parameters analyzed include MLSS and settleable solids.Comment:
Pump Station - Influent Yes No NA NE
Is the pump wet well free of bypass lines or structures?
Is the wet well free of excessive grease?
Are all pumps present?
Are all pumps operable?
Are float controls operable?
Is SCADA telemetry available and operational?
Is audible and visual alarm available and operational?
Areas of construction consists of a new upsized force main that will feed the existing EQ
basin with flow from the upgraded influent pump station (PS). The Town is waiting on the
delivery of 4 submersible pumps and respective control panels. During the month of
January, construction on retrofitting the existing influent PS wet wells for the new pumping
system should begin.
Comment:
Bar Screens Yes No NA NE
Type of bar screen
a.Manual
b.Mechanical
Are the bars adequately screening debris?
Page#5
Permit:NC0026000
Inspection Date:12/03/2020
Owner - Facility:
Inspection Type:
Tabor City WWTP
Compliance Evaluation
Bar Screens Yes No NA NE
Is the screen free of excessive debris?
Is disposal of screening in compliance?
Is the unit in good condition?
The bar screen is cleaned manually 2 times a day. The ATC consists of the installation of a
new mechanical bar screen.
Comment:
Grit Removal Yes No NA NE
Type of grit removal
a.Manual
b.Mechanical
Is the grit free of excessive organic matter?
Is the grit free of excessive odor?
# Is disposal of grit in compliance?
The grit removal system does not appear to be operable.Comment:
Equalization Basins Yes No NA NE
Is the basin aerated?
Is the basin free of bypass lines or structures to the natural environment?
Is the basin free of excessive grease?
Are all pumps present?
Are all pumps operable?
Are float controls operable?
Are audible and visual alarms operable?
# Is basin size/volume adequate?
The 2 surface aerators were not in operation. There is a manual valve to divert flow to the
EQ from the influent PS. The ATC includes installation of a new automated valve.
Comment:
Aeration Basins Yes No NA NE
Mode of operation Ext. Air
Type of aeration system Surface
Is the basin free of dead spots?
Are surface aerators and mixers operational?
Are the diffusers operational?
Is the foam the proper color for the treatment process?
Page#6
Permit:NC0026000
Inspection Date:12/03/2020
Owner - Facility:
Inspection Type:
Tabor City WWTP
Compliance Evaluation
Aeration Basins Yes No NA NE
Does the foam cover less than 25% of the basin’s surface?
Is the DO level acceptable?
Is the DO level acceptable?(1.0 to 3.0 mg/l)
The upper aeration basin is not in operation and is currently being used as an EQ basin
during heavy rain events. The lower aeration basin was in operation and all 3 surface
aerators were functioning.
Comment:
Secondary Clarifier Yes No NA NE
Is the clarifier free of black and odorous wastewater?
Is the site free of excessive buildup of solids in center well of circular clarifier?
Are weirs level?
Is the site free of weir blockage?
Is the site free of evidence of short-circuiting?
Is scum removal adequate?
Is the site free of excessive floating sludge?
Is the drive unit operational?
Is the return rate acceptable (low turbulence)?
Is the overflow clear of excessive solids/pin floc?
Is the sludge blanket level acceptable? (Approximately ¼ of the sidewall depth)
The condition of the lower #2 clarifier was much improved since the last inspection in 2019.
The scimmer arm was operational and the weirs are cleaned weekly. The upper #1 clarifier
was not in operation. There has been work done, under the ATC, on the gravity fed piping
between the upper clarifer #1 and the upper aeration basin.
Comment:
Aerobic Digester Yes No NA NE
Is the capacity adequate?
Is the mixing adequate?
Is the site free of excessive foaming in the tank?
# Is the odor acceptable?
# Is tankage available for properly waste sludge?
The digester has been cleared of the vegetation and trees found during the last inspection.
The new floating aerator has been ordered and waiting for delivery in the next 2-3 weeks.
Installation and start up of the aerator is scheduled for the end of January 2021.
Comment:
Disinfection-Gas Yes No NA NE
Are cylinders secured adequately?
Page#7
Permit:NC0026000
Inspection Date:12/03/2020
Owner - Facility:
Inspection Type:
Tabor City WWTP
Compliance Evaluation
Disinfection-Gas Yes No NA NE
Are cylinders protected from direct sunlight?
Is there adequate reserve supply of disinfectant?
Is the level of chlorine residual acceptable?
Is the contact chamber free of growth, or sludge buildup?
Is there chlorine residual prior to de-chlorination?
Does the Stationary Source have more than 2500 lbs of Chlorine (CAS No. 7782-50-5)?
If yes, then is there a Risk Management Plan on site?
If yes, then what is the EPA twelve digit ID Number? (1000-____-____)
If yes, then when was the RMP last updated?
The contact chamber is cleaned ~every 3 months. Recently the auto switch boxes and
hoses for the gas cylinders have been replaced. The ATC includes construction of a new
dual channel chlorine contact chamber and replacing the gas disinfection system with a new
liquid chlorination/dechlorination system.
Comment:
De-chlorination Yes No NA NE
Type of system ?Gas
Is the feed ratio proportional to chlorine amount (1 to 1)?
Is storage appropriate for cylinders?
# Is de-chlorination substance stored away from chlorine containers?
Are the tablets the proper size and type?
No comment.Comment:
Are tablet de-chlorinators operational?
Number of tubes in use?
No comment.Comment:
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional?
Is sample collected below all treatment units?
Is proper volume collected?
Is the tubing clean?
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type
representative)?
Page#8
Permit:NC0026000
Inspection Date:12/03/2020
Owner - Facility:
Inspection Type:
Tabor City WWTP
Compliance Evaluation
Effluent Sampling Yes No NA NE
The effluent composite sampler is a portable Isco unit that requires ice. It is stored at the
contact chamber area under a plastic trash can for protection from the elements. The CAP
lists replacement of both the influent and effluent portable units with new refrigerated
models.
Comment:
Effluent Pipe Yes No NA NE
Is right of way to the outfall properly maintained?
Are the receiving water free of foam other than trace amounts and other debris?
If effluent (diffuser pipes are required) are they operating properly?
A small amount of solids were observed within the discharge channel.Comment:
Page#9
Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50
Date: 09/30/20
Facility: TOWN OF TABOR CITY NPDES#: NC0026000 Pipe#: 001 County: COLUMBUS
Laboratory 4rforming Test: MERITECH LABS, INC.
X
Signature cf- Aerator in Responsible Charge
Signature o Laboratory Supervisor * PASSED: 1.05% Reduction *
Comments:
Work Order:
MAIL ORIGINAL TO:
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test
Environmental Sciences Branch
Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12
# Young Produced
Adult (L)ive (D)ead
25
21
25
24
24
25
23
25
24
25
24
22
Effluent %: 90%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12
# Young Produced
Adult (L)ive (D)ead
25
23
23
22
25
27
23
24
23
22
22
25
Chronic Test Results
Calculated t = 0.425
Tabular t = 2.508
% Reduction = 1.05
% Mortality
Avg.Reprod.
0.00
Control
23.92
Control
0.00
Treatment 2
23.67
Treatment
2
Control CV
5.483%
% control orgs
producing 3rd
brood
100%
PASS FAIL
1st sample 1st sample 2nd sample
pH
Control
Treatment 2
D.O.
Control
Treatment 2
7.93
7.90
7.89
8.42
8.09
8.14
8.03
8.55
8.13
7.96
8.05
8.47
s s s
t e t e t e
a n a n a n
r d r d r d
t t t
1st sample 1st sample 2nd sample
8.12
7.37
8.06
7.46
7.63 7.50
8.17
7.69
7.62
7.38
8.16
7.40
LC50/Acute Toxicity Test
(Mortality expressed as %, combining replicates
Complete This For Either Test
Test Start Date: 09/23/20
Collection (Start) Date
Sample 1: 09/21/20 Sample 2: 09/23/20
Sample Type/Duration 2nd
1st P/F
Grab Comp. Duration D
I S S
Sample 1 X 24.0 hrs L A A
U M M
Sample 2 X 24.0 hrs T P P
Hardness(mg/1)
Spec. Cond.(pmhos)
Chlorine(mg/1)
Sample temp. at receipt(°C)
44
155
450
455
<0.1
<0.1
..........
YN V.. Y:. flit
1.3
1.3
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
o
%
%
%
Concentration
Mortality
LC50 =
95% Confidence Limits
Method of Determination
Moving Average _ Probit _
Spearman Karber Other
Note: Please
Complete This
Section Also
start/end start/end
Control
High
Conc.
pH D.O.
Organism Tested: Ceriodaphnia dubia Duration(hrs)
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)
T
w /d

Effluent Toxicity Report Form -Chronic Fathead Minnow Multi -Concentration Test
Date:10/23/2020
Facility: Tabor City
x
Laboratory: Merl ich, Inc.
NPDES # NCO() 26000 P
Signature of Operator in tesponsii e Cha
x
7
Signature of Laboratory Supervisor
ipe #: 001 County: Columbus
Comments
MAIL ORIGINAL TO:
Water Sciences Section
Aquatic Toxicology Unit
Division of Water Quality
1621 Mail Service Center
Raleigh, NC 27699-1621
Test Initiation Date/Time 10/13/2020 4:39 PM
% Eff.
Control
Repl.
Surviving #
Original #
Wt/original (mg)
22.5
Surviving #
Original #
Wt/original (mg)
45
Surviving #
Original #
Wt/original (mg)
75
Surviving #
Original #
Wt/original (mg)
90
Surviving #
Original #
Wt/original (mg)
100 1
Surviving #
Original #
Wt/original (mg)
cter Quality Data
Control
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
High Concentration
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
Chlorine(mg1L)
Temp, at Receipt (°C)
Dilution H2O Batch #
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
1
2
3
4
Avg Wt/Surv. Control
10
10
10
10
10
10
10
10
0.588
0.606
0.552
0.627
10
10
10
10
10
10
10
10
0.616
0.697
0.567
0.506
10
9
10
10
10
10
10
10
0.710
0.566
0.605
0.547
10
10
10
10
10
10
10
10
0.708
0.665
0.723
0.555
10
10
9
9
10
10
10
10
0.719
0.756
0.590
0.675
10
10
10
10
10
10
10
10
0.743
0.547
0.762
0.759
Day
% Survival
Avg Wt (mg)
0.593
100.0
0.593
Test Organisms
!" Cultured In -House
17 Outside Supplier
Hatch Date: 10/12/20
% Survival 100.0 I Hatch Time: 3:00 pm CT
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
0.597 1
97.5
0.607
0.663
95.0
0.685
100.0
0.703
0
3
5
6
7.78 /
7.69
7.73 /
7.49
7.68 /
7.77
7.81 /
7.98'
7.90 /
7.59
7.89 /
7.81
7.76 /
7.34
7.75 /
7.54
7.82 /
7.01
7.78 /
7.82
7.97 /
8.17
8.31 /
8.11
8.30 /
7.58
7.94 /
6.34
24.4 /
24.7
24.6 /
24.6
24.0 /
24.8
24.1 /
24.5
24.2 /
24.7
24.5 /
25.9
25.0 /
25.4
0
2
3
5
6
7.71 /
8.11
7.90 /
8,08-7,64
/
8.13
7.92 /
8.30
8.30 /
8.01
7.81 /
8.18
7.97 /
8.06
7.71 /
7.44
7.67 /
7.17
8.18 /
7.72
7.96 /
8.15
8.30 /
7.98
8.22 /
7.47
7.90 /
6.99
24.6 /
24.6
24.2 /
24.2
24.3 /
25.2
24.6 /
24.8
24.5 /
24.7
24.6 /
25.3
24.1 /
24.7
10/12/2020
10/14/2020
10/15/2020
24.0
24.0
24.0
52
54
56
101
103
110
350
374
395
<0.1
<0.1
<0.1
1.1
1.3
1.8
1510
44
29
146
1512
1513
44
30
44
30,
161
152
Survival Growth
Normal '-i F.7I
Hom. Var. ri Fl
NOEC 100 100
LOEC
ChV
Method
>100 >100
>100 >100
Steel's Dunnett's
Overall Result
ChV
>100
State
Conc.
22.5
Swwive t
Critical
10
Calculated
16
Growth
Critical Calculated
2.41 -0,0606
45
10
14
2.41
-0,2563
75
10
18
2,41
-1.2953
90
10
14
2.41
-1.7100
100
10
18
2.41
-2.0409

Annual Monitoring and Pollutant Scan
Mth/Yr APRIL 2021
Permit No. NC0026000
Outfall EFFLUENT
Facility Name
Date of sampling
Analytical Laboratory
TOWN OF TABOR CITY-NC0026000
3/18.2021
ENVIRONMENTAL CHEMISTS, INC
ORC Stephanie Moore
Phone [phone]
i
�sam
mple
h
'
sample
ult P r
mil
�Meas iir
es€
ie
Ammonia (as N)
Comp
3/18/21
EPA 350.1
<0.2
<0.2
mg/1
1
Dissolved oxygen
Grab
3/17/21
SM 4500 0 G
1.0
7.5
mg/1
1
Nitrate/Nitrite
Comp
3/18/21
EPA353.2
0.10
12.7
mg/1
1
Total Kjeldahl nitrogen
Comp
3/18/21
EPA 351.2
0.50
<0.5
mg/1
1
Total Phosphorus
Comp
3/18/21
SM 4500 P F
0.040
0.86
mg/1
1
Total dissolved solids
Comp
3/18/21
SM 2540C
2.5
234
mg/1
1
Hardness
comp
3/18/21
sM2340C
2
68
mg/1
1
Chlorine (total residual, TRC)
Grab
3/17/21
SM 4500C1-G
50
<50
ug/1
1
Oil and grease
Grab
3/18/21
EPA 1664
5
<5
mg/1
1
4;,..ye.�"'
rid .
iiri .. iwP ''*'.
`.
ii
N
..,.. .F„
.rh•�S
5irh'
Antimony
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Arsenic
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Beryllium
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Cadmium
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Chromium
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Copper
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Lead
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Mercury
Grab
3/18/21
EPA 1631
1.0
1.78
ng/1
1
Nickel
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Selenium
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Silver
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Thallium
Comp
3/18/21
EPA 200.7
0.010
<0.01
mg/1
1
Zinc
Comp
3/18/21
EPA 200.7
0.010
0.02
mg/1
1
Cyanide
Grab
3/18/21
EPA 335.4
0.005
<0.005
mg/1
1
Total phenolic compounds
Grab
3/18/21
EPA 420.4
0.005
<0.005
mg/1
1
Acrolein
Grab
3/18/21
EPA 624
5
<5
ug/1
1
Acrylonitrile
Grab
3/18/21
EPA 624
5
<5
ug/1
1
Benzene
Grab
3/18/21
EPA 624
0..5
<0.5
ug/1
1
Bromoform
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Carbon tetrachloride
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Chlorobenzene
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Chlorodibromomethane
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Chloroethane
Grab
3/18/21
EPA 624
5
<5.00
ug/1
1
2-chloroethylvinyl ether
Grab
3/18/21
EPA 624
5
<5
ug/1
1
Chloroform
Grab
3/18/21
EPA 624
0.5
1.47
ug/1
1
Dichlorobromomethane
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
1,1-dichloroethane
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
1,2-dichloroethane
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Trans-1,2-dichloroethylene
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Form - DMR- PPA-1
Page 1

Annual Monitoring and Pollutant Scan
Mth/Yr APRIL 2021
Permit No. NC0026000
Outfall EFFLUENT
b a e e(
a2= k` :r � ���� �1� r �N
iiamp eer
k - a ary i
�a�ir�� a '� r t�i'
Q dM a'
s Zlam e
^? u*
,
t n' of
'' �, x-�• .i �a�'.�a tc� ���,
Masu
�y
1,1-dichloroethylene
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
1,2-dichloropropane
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
1,3-dichloropropylene
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Ethylbenzene
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Methyl bromide
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Methyl chloride
Grab
3/18/21
EPA 624
0.5
3.09
ug/1
1
Methylene chloride
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
1,1,2,2-tetrachloroethane
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Tetrachloroethylene
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Toluene
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
1,1,1-trichloroethane
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
1,1,2-trichloroethane
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Trichloroethylene
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
Vinyl chloride
Grab
3/18/21
EPA 624
0.5
<0.5
ug/1
1
. A b oU x.�a'
�
P-chloro-m-creso
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
2-chlorophenol
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
2,4-dichlorophenol
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
2,4-dimethylphenol
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
4,6-dinitro-o-cresol
Grab
3/18/21
EPA 625
23.8
<23.8
ug/1
1
2,4-dinitrophenol
Grab
3/18/21
EPA 625
23.8
<23.8
ug/1
1
2-nitrophenol
Grab
3/18/21
EPA 625
23.8
<23.8
ug/1
1
4-nitrophenol
Grab
3/18/21
EPA 625
23.8
<23.8
ug/1
1
Pentachlorophenol
Grab
3/18/21
EPA 625
23.8
<23.8
ug/1
1
Phenol
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
2,4,6-trichlorophenol
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Se-unrutra�p
Acenaphthene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Acenaphthylene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Anthracene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Benzidine
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Benzo(a)anthracene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Benzo(a)pyrene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
3,4 benzofluoranthene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Benzo(ghi)perylene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Benzo(k)fluoranthene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Bis (2-chloroethoxy) methane
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Bis (2-chloroethyl) ether
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Bis (2-chloroisopropyl) ether
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Bis (2-ethylhexyl) phthalate
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
4-bromophenyl phenyl ether
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Butyl benzyl phthalate
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
2-chloronaphthalene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
4-chlorophenyl phenyl ether
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Form - DMR- PPA-1
Page 2

Annual Monitoring and Pollutant Scan
Mth/Yr APRIL 2021
Permit No. NC0026000
Outfall EFFLUENT
1`F
��
4 +:
.��: ( vaw .:'
�
_ 4'" +'r.Jm �' G' ..
Chrysene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Di-n-butyl phthalate
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Di-n-octyl phthalate
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Dibenzo(a,h)anthracene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
1,2-dichlorobenzene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
1,3-dichlorobenzene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
1,4-dichlorobenzene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
3,3-dichlorobenzidine
Grab
3/18/21
EPA 625
9.52
<9.52
ug/1
1
Diethyl phthalate
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Dimethyl phthalate
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
2,4-dinitrotoluene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
2,6-dinitrotoluene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
1,2-diphenylhydrazine
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Fluoranthene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Fluorene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Hexachlorobenzene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Hexachlorobutadiene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Hexachlorocyclo-pentadiene
Grab
3/18/21
EPA 625
23.8
<23.8
ug/1
1
Hexachloroethane
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Indeno(1,2,3-cd)pyrene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Isophorone
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Naphthalene
Grab
3/18/21
_
EPA 625
4.76
<4.76
ug/1
1
Nitrobenzene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
N-nitrosodi-n-propylamine
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
N-nitrosodimethylamine
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
N-nitrosodiphenylamine
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Phenanthrene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
Pyrene
Grab
_
3/18/21
EPA 625
4.76
<4.76
ug/1
1
1,2,4,-trichlorobenzene
Grab
3/18/21
EPA 625
4.76
<4.76
ug/1
1
I certify under penalty of law that this document and all attachments were prepared under my direction
and supervision in accordance with a system to design to assure that qualified perdonnel properly
gather and evaluat the information submitted. Based on my inquiry of the person or persons that
manage the system, or those persons directly responsibel for gathering the information, the
information submitted is , to the best of my knowledge and belief, true, accurate and complete. I am
aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations.
Stephanie Moore
Authorized Representative name
Signature Date
Form - DMR- PPA-1
Page 3

Effluent Toxicity Report Form -Chronic Fathead Minnow Multi -Concentration Test
Date:12/23/2020
Facility: Tabor City NPDES # NCO() 26000
Laboratory: Meritech, Inc.
x
Signature of Operator in Res ponsiblepharge
x
Signatur6 of Laboratory Supervisor
Pipe #: 001 County: Columbus
Comments'
MAIL ORIGINAL TO:
Water Sciences Section
Aquatic Toxicology Unit
Division of Water Quality
1621 Mail Service Center
Raleigh, NC 27699-1621
Test Initiation Date/Time 12/15/2020
% Eff.
Control
Repi
Surviving #
Original #
Wt/original (mg)
22.5
Surviving #
Original #
Wt/original (mg)
45
Surviving #
Original #
Wt/original (mg)
I 75 I
Surviving #
Original #
Wt/original (mg)
90
Surviving #
Original #
Wt/original (mg)
100
Surviving #
Original #
Wt/original (mg)
Water Quality Data
Control
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
High Concentration
pH (SU) Init/Fin
DO (mg/L) Init/Fin
Temp (C) Init/Fin
Sample
Collection Start Date
Grab
Composite (Duration)
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
Chlorine(mg/L)
Temp. at Receipt (°C)
Dilution H2O Batch #
Hardness (mg/L)
Alkalinity (mg/L)
Conductivity (umhos/cm)
1
2
5:07 PM
3
Avg Wt/Surv, Control
10
10
10
10
10
10
10
10
0.455
0.563
0.515
0.579
10
10
10
10
10
10
10
10
0.563
0.523
0.585
0.561
10
10
10
10
10
10
10
10
0.576
0.635
0.591
0.604
10
10
10
10
10
10
10
10
0.639
0.611
0.535
0.529
10
10
10
10
10
10
10
10
0.694
0.584
0.601
0.596
10
10
10
9
10
10
10
10
0.663
0.504
0.458
0.612
Day
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
% Survival
Avg Wt (mg)
0.528
100.0
0.528
100.0
0.558
100,0
0.602
100.0
0.579
100.0
0.619
97.5
0.559
Test Organisms
r Cultured In -House
17 Outside Supplier
Hatch Date: 12/14/20
Hatch Time: 3:00 pm CT
0
1
2
3
7.83 /
7.68
7.83 /
7.84
7.70 /
7.84
7.97 /
7.97
7.69 /
7.62
7.85 /
7.88
7.94 /
7.56
8.09 /
7.29
7.92 /
7.90
8.04 /
8.10
8.35 /
8.07
8.02 /
7.25
8.14 /
7.78
8.12 /
7.11
24.6 /
24.5
24.8 /
24.8
24.0 /
24.3
24.4 /
24.1
24.5 /
24.3
24.6 /
24.3
24.7 /
24.3
0
1
2
3
7.70 /
8.14
7.86 /
8.30
7.73 /
8.23
8.00 /
8.35
8.21 /
8.15
7.93 /
8.27
8.04 /
8.07
8.02 /
7.52
8.01 /
7.74
7.89 /
7.98
8.23 /
8.05
8.08 /
7.27
8.02 /
7.90
8.28 /
7.10
24.4 /
24.0
25.5 /
24.7
24.1 /
24.5
24.7 /
24.6
25.5 /
24.4
25.0 /
24.0
25.1 /
24.1
1
2
3
12/14/2020
12/16/2020
12/17/2020
24.0
24.0
24.0
56
56
56
113
117
112
486
489
479
<0.1
<0.1
<0.1
2.1
1.2
1.3
1528
46
30
170
1529
1530
44
44
34
30
169
167
1531
44
32
172
Survival Growth Overall Result
Normal ri Fj ChV
Hom. Var. ri Fi
NOEC 100 100
LOEC >100 >100
ChV >100 >100
Method Steel's Dunnett's
>100
Stats
Conc.
22.5
45
75
90
Survival
Critical Calculated
10 18
10 18
10 18
10 18
Growth
Critical Calculated
2.41-0.7552
2.41-1.8502
2.41-1.2712
2.41-2.2844
100
10 16
2.41-0.7866

Effluent Toxicity Report Form - Chronic Pass/Fail and Acute LC50 Date: 12/22/20
Facility: TOWN OF TABOR CITY NPDES#: NC0026000 Pipe#: 001 County: COLUMBUS
Laboratory Performing Test: MERITECH LABS, INC.
X
perator in Responsible Charge
Signature of Laboratory Supervisor
Comments:
* PASSED: -0.41% Reduction *
Work Order:
MAIL ORIGINAL TO:
North Carolina Ceriodaphnia
Chronic Pass/Fail Reproduction Toxicity Test
Environmental Sciences Branch
Div. of Water Quality
N.C. DENR
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
CONTROL ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12
# Young Produced
Adult (L)ive (D)ead
22
23
18
20
21
20
22
23
23
20
21
10
Effluent %: 90%
TREATMENT 2 ORGANISMS 1 2 3 4 5 6 7 8 9 10 11 12
# Young Produced
Adult (L)ive (D)ead
18
22
21
21
21
21
21
18
21
21
17
22
Chronic Test Results
Calculated t =
Tabular t =
Reduction = -0.41
% Mortality
Avg.Reprod.
0.00
Control
20.25
Control
0.00
Treatment 2
20.33
Treatment
2
Control CV
17.633%
% control orgs
producing 3rd
brood
91.7%
PASS FAIL
Check One
PH
Control
Treatment 2
D.O.
Control
Treatment 2
1st sample
7.95
8.03
8.06
8.50
s
t
a
r
t
1st sample
e
n
d
8.13
8.15
8.24
8.23
1st sample
8.08
8.50
8.08
8.46
s
t
a
r
t
1st sample
e
n
d
8.20
7.71
8.38
7.76
LC50/Acute Toxicity Test
(Mortality expressed
as %, combining
2nd sample
8.10
7.85
8.16
8.29
s
t
a
r
t
2nd sample
e
n
d
8.41
7.52
8.12
7.66
Complete This For Either Test
Test Start Date: 12/16/20
Collection (Start) Date
Sample 1: 12/14/20 Sample 2: 12/16/20
Sample Type/Duration
Sample 1
Sample 2
Grab Comp.
X
Duration
24.0 hrs
X 24.0 hrs
D
I
L
U
T
1st
S
A
M
P
2nd
P/F
S
A
M
P
Hardness(mg/1)
Spec. Cond. (pmhos)
Chlorine(mg/1)
Sample temp. at receipt(°C)
44
153
493
473
<0.1
<0.1
2.1
1.2
replicates)
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
Concentration
Mortality
LC50 =
95% Confidence Limits
Method of Determination
Moving Average Probit
Spearman Karber - Other
start/end
Note: Please
Complete This
Section Also
start/end
Control
High
enn n
pH
Organism Tested: Ceriodaphnia dubia
Duration (hrs) :
D.O.
Copied from DWQ form AT-1 (3/87) rev. 11/95 (DUBIA ver. 4.41)

Annual Monitoring and Pollutant Scan
Mth/Yr MARCH 2016
Permit No. NC0026000
Outfall EFFLUENT
Facility Name
Date of sampling
Analytical Laboratory
Paramete
Ammonia (as N)
TOWN OF TABOR CITY
3/15/16
MERITECH, INC
tamp e
Type'.
Comp
ban:4 de
Date
3/15/16
Analytical
Method
EPA 350.1
ORC Michael Wayne Britt
Phone [phone]
Quantitation
<0.1
sample
Result
0.1
units of
Measurement
mg/ 1
Number of
samples
1
Dissolved oxygen
Grab
3/15/16
SM 4500 0 G
1.0
9.8
mg/1
1
Nitrate/Nitrite
Comp
3/15/16
EPA 353.2
0.10
21.2
mg/1
1
Total Kjeldahl nitrogen
Comp
3/15/16
EPA 351.1
0.50
<0.20
mg/1
1
Total Phosphorus
Comp
3/15/16
EPA 200.7
0.020
1.64
mg/1
1
Total dissolved solids
Grab
3/15/16
EPA 160.1
10
384
mg/1
1
Hardness
Grab
3/15/16
SM 2340B
1
58
mg/1
1
Chlorine (total residual, TRC)
Grab
3/15/16
SM 4500C1-G
50
21
ug/ 1
1
Oil and grease
tals
Grab
total recoverable), cyanide and
3/15/16
EPA 413.1
5
<5
mg/1
1
otal phenols'
Antimony
Comp
3/15/16
EPA 200.7
0.025
<0.025
mg/1
1
Arsenic
Comp
3/15/16
EPA 200.7
0.010
<0.010
mg/ 1
1
Beryllium
Comp
3/15/16
EPA 200.7
0.005
<0.005
mg/ 1
1
Cadmium
Comp
3/15/16
EPA 200.7
0.002
<0.002
mg/1
1
Chromium
Comp
3/15/16
EPA 200.7
0.01
<0.005
mg/ 1
1
Copper
Comp
3/15/16
EPA 200.7
0.002
0.007
mg/1
1
Lead
Comp
3/15/16
EPA 200.7
0.010
<0.010
mg/1
1
* Mercury
Comp
3/15/16
EPA 200.7
0.0002
<0.0002
mg/ 1
1
Nickel
Comp
3/15/16
EPA 200.7
0.010
<0.010
mg/1
1
Selenium
Comp
3/15/16
EPA 200.7
0.010
<0.010
mg/ 1
1
Silver
Comp
3/15/16
EPA 200.7
0.005
mg/ 1
1
Thallium
Comp
3/15/16
EPA 200.7
0.020
<0.020
mg/ 1
1
Zinc
Comp
3/15/16
EPA 200.7
0.010
0.039
mg/1
1
Cyanide
Grab
3/15/16
EPA 335.2
0.005
<0.005
mg/1
1
Total phenolic compounds
Grab
3/15/16
EPA 420.1
0.010
<0.01
mg/1
1
volatll
Acrolein
nic compound
Grab
3/15/16
EPA 624
<50.0
<50.0
ug/1
1
Acrylonitrile
Grab
3/15/16
EPA 624
<10.0
<10.0
ug/1
1
Benzene
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
Bromoform
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
Carbon tetrachloride
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
Chlorobenzene
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/1
1
Chlorodibromomethane
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
Chloroethane
Grab
3/15/16
EPA 624
<5.00
<5.00
ug/1
1
2-chloroethylvinyl ether
Grab
3/15/16
EPA 624
<5.00
<5.00
ug/1
1
Chloroform
Grab
3/15/16
EPA 624
<1.00
8.03
ug/1
1
Dichlorobromomethane
Grab
3/15/16
EPA 624
<1.00
4.23
ug/1
1
1,1-dichloroethane
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/1
1
1,2-dichloroethane
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/1
1
Trans-1, 2-dichloroethylene
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
* Mercury analyzed out of hold time
due to laboratory error
Form - DMR- PPA- 1
Page 1

Annual Monitoring and Pollutant Scan
Mth/Yr MARCH 2016
Permit No. NC0026000
Outfall EFFLUENT
mete
Volatile
genic compounds (Cont.)
1,1-dichloroethylene
mpie
Ype
Grab
.►ample
_Date
3/15/16
Analyucal
Method
EPA 624
Cjuantitation
<1.00
bampie
Result
<1.00
unis of
Measurement
ug/1
Number ©t'
samples
1
1,2-dichloropropane
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
1,3-dichloropropylene
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/1
1
Ethylbenzene
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
Methyl bromide
Grab
3/15/16
EPA 624
<5.00
<5.00
ug/1
1
Methyl chloride
Grab
3/15/16
EPA 624
<5.00
<5.00
ug/ 1
1
Methylene chloride
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
1,1,2,2-tetrachloroethane
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/1
1
Tetrachloroethylene
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
Toluene
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/1
1
1,1,1-trichloroethane
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
1,1,2-trichloroethane
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/ 1
1
Trichloroethylene
Grab
3/15/16
EPA 624
<1.00
<1.00
ug/1
1
Vinyl chloride
Grab
3/15/16
EPA 624
<5.00
<5.00
ug/1
1
Acid -extractable compounds
P-chloro-m-creso
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
2-chlorophenol
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
2,4-dichlorophenol
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
2,4-dimethylphenol
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
4,6-dinitro-o-cresol
Grab
3/15/16
EPA 625
<50
<50
ug/1
1
2,4-dinitrophenol
Grab
3/15/16
EPA 625
<50
<50
ug/ 1
1
2-nitrophenol
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
4-nitrophenol
Grab
3/15/16
EPA 625
<50
<50
ug/1
1
Pentachlorophenol
Grab
3/15/16
EPA 625
<50
<50
ug/ 1
1
Phenol
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
2, 4, 6-trichlorophenol
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
ral compounds
Acenaphthene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Acenaphthylene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Anthracene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Benzidine
Grab
3/15/16
EPA 625
<50
<50
ug/1
1
Benzo(a)anthracene
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Benzo(a)pyrene
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
3,4 benzofluoranthene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Benzo(ghi)perylene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Benzo(k)fluoranthene
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Bis (2-chloroethoxy) methane
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Bis (2-chloroethyl) ether
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Bis (2-chloroisopropyl) ether
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Bis (2-ethylhexyl) phthalate
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
4-bromophenyl phenyl ether
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Butyl benzyl phthalate
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
2-chloronaphthalene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
4-chlorophenyl phenyl ether
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Form - DMR- PPA-1
Page 2

Annual Monitoring and Pollutant Scan
Mth/Yr MARCH 2016
Permit No. NC0026000
Outfall EFFLUENT
neutral: compounds (cont.)'
Chrysene
Grab
ammple
Date
3/15/16
Analytical
Method
EPA 625
uantitatien'
Sample
Result
<10
Units of
Measurement
ug/ 1
Number of',
'samples
1
Di-n-butyl phthalate
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Di-n-octyl phthalate
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Dibenzo(a,h)anthracene
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
1,2-dichlorobenzene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
1,3-dichlorobenzene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
1,4-dichlorobenzene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
3,3-dichlorobenzidine
Grab
3/15/16
EPA 625
<50
<50
ug/ 1
1
Diethyl phthalate
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Dimethyl phthalate
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
2,4-dinitrotoluene
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
2,6-dinitrotoluene
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
1 ,2-diphenylhydrazine
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Fluoranthene
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Fluorene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Hexachlorobenzene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Hexachlorobutadiene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Hexachlorocyclo-pentadiene
Grab
3/15/16
EPA 625
<50
<50
ug/ 1
1
Hexachloroethane
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Indeno(1,2,3-cd)pyrene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Isophorone
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Naphthalene
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Nitrobenzene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
N-nitrosodi-n-propylamine
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
N-nitrosodimethylamine
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
N-nitrosodiphenylamine
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
Phenanthrene
Grab
3/15/16
EPA 625
<10
<10
ug/ 1
1
Pyrene
Grab
3/15/16
EPA 625
<10
<10
ug/1
1
1,2,4,-trichlorobenzene
Grab
3/15/16
EPA 625
<10
<10
ug/1
I certify under penalty of law that this document and all attachments were prepared under my direction
and supervision in accordance with a system to design to assure that qualified perdonnel properly
gather and evaluat the information submitted. Based on my inquiry of the person or persons that
manage the system, or those persons directly responsibel for gathering the information, the
information submitted is , to the best of my knowledge and belief, true, accurate and complete. I am
aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations.
Al J. Leonard, Jr.
Authorized Representative name
Signature
Date
Form - DMR- PPA-1
Page 3