NC0056561_Fact Sheet_20220104

Fact Sheet
NPDES Permit No. NC0056561
Permit Writer/Email Contact Gary Perlmutter, [e-mail]:
Date: January 4, 2022
Division/Branch: NC Division of Water Resources/NPDES Municipal Permitting
Fact Sheet Template: Version 09Jan2017
Permitting Action:
❑X Renewal
❑ Renewal with Expansion
❑ New Discharge
❑ Modification (Fact Sheet should be tailored to mod request)
Note: A complete application should include the following:
• For New Dischargers, EPA Form 2A or 2D requirements, Engineering Alternatives Analysis, Fee
• For Existing Dischargers (POTW), EPA Form 2A, 3 effluent pollutant scans, 4 2nd species WET
tests.
• For Existing Dischargers (Non-POTW), EPA Form 2C with correct analytical requirements based
on industry category.
Complete applicable sections below. If not applicable, enter NA.
1. Basic Facility Information:
Facility Information
Applicant/Facility Name:
Town of Maggie Valley / Maggie Valley WWTP
Applicant Address:
3987 Soco Road, Maggie Valley, NC 28751
Facility Address:
5320 Jonathan Creek Road, Waynesville, NC 28785
Permitted Flow:
1.0 MGD
Facility Type/Waste:
MAJOR Municipal; 100% domestic
Facility Class:
Grade III Biological Water Pollution Control System
Treatment Units:
A mechanical influent bar screen, Back-up manual bar screen, Flow
selector basin, 2 rectangular aeration basins, 2 rectangular Aero-Mod
clarifiers, 5 dual aeration blowers, 2 digesters, Chlorination, Chlorine
contact basin, Sulfur dioxide dechlorination, Effluent flow monitoring,
Belt filter press
Pretreatment Program (Y/N)
N
County:
Haywood
Region
Asheville
Briefly describe the proposed permitting action and facility background: The Town of Maggie Valley has
applied for an NPDES permit renewal at 1.0 MGD for the Maggie Valley WWTP, received by DWR
September 28, 2020. Treatment units in the above table have been updated per the description in the
application cover letter. This facility serves a population of approximately 4,500 residents. Treated
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domestic wastewater is discharged into Jonathans Creek, a class C;Tr water in the French Broad River
Basin. The classification denotes Aquatic Life, Secondary Recreation, Fresh Water, and Trout Waters. The
facility has a primary Outfall 001.
The Town of Maggie Valley WWTP receives landfill leachate on a limited basis. The leachate is trucked
and hauled to the Maggie Valley facility in 6,000-gallon loads. The leachate is unloaded at the headworks
of the WWTP and is not to exceed 50,000 gallons per day. Town of Maggie Valley staff assists and monitors
deliveries. The Town has a formal agreement to accept the leachate which requires annual testing of the
leachate and states that the Town may refuse to accept the leachate at any point it wishes. To verify that the
leachate contributions from the landfill are not considered significant, and to verify that the plant does not
need to activate a pretreatment program, Special Condition A. (5.) Industrial Waste Survey has been added
to the permit, requiring the Town to conduct an industrial waste survey within 180 days of permit issuance.
2. Receiving Waterbody Information:
Receiving Waterbody Information
Outfalls/Receiving Stream(s):
Outfall 001 — Jonathans Creek
Stream Index:
5-26-(7)
Stream Classification:
C;Tr
Drainage Area (mi2):
55.8
Summer 7Q10 (cfs)
23
Winter 7Q10 (cfs):
27
30Q2 (cfs):
38
Average Flow (cfs):
110
IWC (% effluent):
6.3
2020 303(d) listed/parameter:
No
Subject to TMDL/parameter:
Yes- State wide Mercury TMDL implementation.
Basin/Subbasin/HUC:
French Broad/04-03-05/06010106
USGS Topo Quad:
E6SE Dellwood, NC
3. Effluent Data Summary
Effluent data for Outfall 001 is summarized below for the period of April 2017 through April 2021.
Table 1. Effluent Data Summary Outfall 001
Parameter
Units
Average
Max
Min
Permit
Limit
Flow
MGD
0.4
1.875
0.192
MA 1.0
BOD
mg/1
5
26.1
0.5
WA 45.0
MA 30.0
TSS
mg/1
5.8
26
2
WA 45.0
MA 30.0
NH3N
mg/1
0.2
1.6
0.1
DO
mg/1
5.9
9.4
3.35
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Parameter
Units
Average
Max
Min
Permit
Limit
Fecal coliform
#/100 ml
(geomean)
5.9
2940
2
(geometric)
WA 400
MA 200
Temperature
° C
17
25
7
pH
SU
6.4
7.3
6
6.0 < pH <
9.0
Total Residual
Chlorine
ug/1
All data < 13
DM 28
Total Silver
ug/1
1.8
< 5
< 1
Total Hardness
mg/1
45.6
100
5
TN
mg/1
8.6
16.4
2.18
TP
mg/1
2.9
5.5
0.37
MA -Monthly Average, WA -Weekly Average DM -Daily Maximum, DA-Daily Average, QA-Quarterly Average,
AA -Annual Average.
All silver data were non -detects at < 5, < 3 and < 1 ug/L with one detection at 1 ug/L.
4. Instream Data Summary
Instream monitoring may be required in certain situations, for example: 1) to verify model predictions when
model results for instream DO are within 1 mg/1 of instream standard at full permitted flow; 2) to verify
model predictions for outfall diffuser; 3) to provide data for future TMDL; 4) based on other instream
concerns. Instream monitoring may be conducted by the Permittee, and there are also Monitoring
Coalitions established in several basins that conduct instream sampling for the Permittee (in which case
instream monitoring is waived in the permit as long as coalition membership is maintained).
If applicable, summarize any instream data and what instream monitoring will be proposed for this permit
action: The current permit does not require instream monitoring. The Division has an Ambient Monitoring
Station E6300000 located just downstream of the facility, approximately 450 feet from the outfall. Data
from 2016 through 2018 were reviewed from AMS Station E6300000 and are summarized below.
Table 2. NRBC Data Summary
Parameter
Units
K2100000
Average
Max
Min
Temperature
° C
12.7
23.3
4.7
DO
mg/L
9.9
13.56
8.49
Conductivity
µmhos/cm
56
144
39
Fecal Coliform
#/100mL
(ge 132 an)
68000
11
Downstream temperature did not exceed 29°C during the period reviewed [per 15A NCAC 02B .0211(18)].
As no upstream data was recorded, no data comparison could be made between downstream temperature
and natural water temperature.
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Downstream DO was not less than 6.0 mg/L during the period reviewed [per 15A NCAC 02B .0211(6)].
Downstream fecal coliform did not exceed a geometric mean of 200/100mL, nor did it exceed 400/100mL
in greater than 20% of the samples taken during the period reviewed [per 15A NCAC 02B .0211(7)].
Based on review of the Division's Ambient Monitoring System data, no instream monitoring requirement
has been added to the permit at this time.
Is this facility a member of a Monitoring Coalition with waived instream monitoring (Y/N): N
Name of Monitoring Coalition: N/A
5. Compliance Summary
Summarize the compliance record with permit effluent limits (past 5 years): The facility reported one fecal
coliform limit violation in 2019.
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 tests as well as 6 of 6 second species toxicity
tests from January 2017 to April 2021.
Summarize the results from the most recent compliance inspection: The last facility inspection conducted
in February 2019 reported that the facility was out of compliance with permit NC0056561, citing issues
with influent and effluent sampling. A follow-up inspection was conducted in Sepember 2021 by the
Asheville Regional Office (ARO). The ARO noted the sampling issues had been remedied, and the facility
was in compliance with their permit.
6. Water Quality -Based Effluent Limitations (WQBELs)
Dilution and Mixing Zones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1 Q 10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic
Life; non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA
If applicable, describe any mixing zones established in accordance with 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 existing BOD
limits are technology based effluent limits (TBELs) incorporated in the permit based on the results of a
1989 Level B model, which were confirmed later in 1996. No changes are proposed from the previous
permit limits.
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Ammonia and Total Residual Chlorine Limitations
Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of
1.0 mg/L (summer) and 1.8 mg/L (winter). Acute ammonia limits are derived from chronic criteria, utilizing
a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non -Municipals.
Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection
of aquatic life (17 µg/L) and capped at 28 µg/L (acute impacts). Due to analytical issues, all TRC values
reported below 50 µg/L are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: The current permit
limits TRC to 28 µg/L as a daily max. The limits and have been reviewed in the attached WLA and have
been found to be protective. No changes were made for TRC.
The current permit does not set limits for ammonia Ammonia requirements have been reviewed in the
attached WLA. Based on instream wastewater concentration -based calculations for ammonia toxicity,
ammonia limits have been added to the permit as a monthly average of 12.6 mg/L and a weekly average of
35.0 mg/L.
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 recent
effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC
RPA procedure utilizes the following: 1) 95% Confidence Level/95% Probability; 2) assumption of zero
background; 3) use of '/2 detection limit for "less than" values; and 4) streamflows used for dilution
consideration based on 15A NCAC 2B.0206. Effective April 6, 2016, NC began implementation of
dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of
Instream Dissolved Metals Standards, dated June 10, 2016.
A reasonable potential analysis was conducted on effluent toxicant data collected between April 2017
through April 2021. Pollutants of concern included toxicants with positive detections and associated water
quality standards/criteria. Based on this analysis, the following permitting actions are proposed for this
permit:
• Effluent Limit with Monitoring. The following parameters will receive a water quality -based
effluent limit (WQBEL) since they demonstrated a reasonable potential to exceed applicable water
quality standards/criteria: N/A
• Monitoring Only. The following parameters will receive a monitor -only requirement since they
did not demonstrate reasonable potential to exceed applicable water quality standards/criteria, but
the maximum predicted concentration was > 50% of the allowable concentration: Total Silver*
• 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: N/A
• POTW Effluent Pollutant Scan Review: Three effluent pollutant scans were evaluated for
additional pollutants of concern. (PPAs from 2019 and 2020)*
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
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Arsenic, Total Beryllium, Total Cadmium, Total Phenolic Compounds, Total Chromium,
Total Copper, Total Cyanide, Total Lead, Total Nickel, Total Selenium, Total Zinc
*Note: The Maggie Valley WWTP neglected to conduct their 2018 PPA, as is required in their permit, but
did conduct sampling at the beginning of 2019 to satisfy this requirement.
The current permit requires quarterly monitoring for total silver. Results for Total Silver included 20 non -
detects and one detect at 1 µg/L (reporting limit = 1 µg/L). Effluent monitoring for silver has been increased
from quarterly to monthly. With additional samples, the Division will have a more robust dataset to
determine reasonable potential for total silver in the effluent. Should the facility report a detection of total
silver greater than the allowable discharge concentration, the Town shall report to the Division and the
permit may be reopened for inclusion of additional total silver requirements.
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 6%
effluent concentration. No changes were made.
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.
Table 3. Mercury Effluent Data Summary.
Statistic
2019
2020
Number of Samples
2
1
Annual Average Conc., ng/L
2.3
2.38
Maximum Conc., ng/L
2.71
2.38
TBEL, ng/L
47
WQBEL, ng/L
190.1
Describe proposed permit actions based on mercury evaluation: Since no annual average mercury
concentration exceeded the WQBEL, and no individual mercury sample exceeded the TBEL, no mercury
limit is required. Since the facility is < 2.0 MGD, no MMP is required.
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Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation within
this permit: N/A
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
GODS/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). N/A
Are 85% removal requirements for BOD5/TSS included in the permit? YES
If NO, provide a justification (e.g., waste stabilization pond). N/A
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: N/A
9. Antibacksliding Review:
Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YES/NO): NO
If YES, confirm that antibacksliding provisions are not violated: N/A
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
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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.
Currently, temperature monitoring is required at a frequency of 3/week and total residual monitoring is
required at a frequency of 2/week. Per 15A NCAC 02B .0508, Grade III Water Quality Limited facilities
shall monitor for temperature on a daily basis and total residual chlorine 3/week. As such, effluent
temperature monitoring has been increased to daily and effluent TRC monitoring has been increased to
3/week.
The Town of Maggie Valley requested monitoring frequency reductions for BOD5, Total Suspended Solids,
NH3-N and Fecal Coliform in July 2021. Based on DWR Guidance Regarding the Reduction of Monitoring
Frequencies in NPDES Permits for Exceptionally Performing Facilities, the last three years of the facility's
data for these parameters were reviewed in accordance with the criteria outlined in the guidance. The facility
meets the DWR guidance and 2/week monitoring frequency requirements for BOD5, Total Suspended
Solids, NH3-N and Fecal Coliform has been included in the draft permit.
For instream monitoring, refer to Section 4.
11. Electronic Reporting Requirements
The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective December
21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports (DMRs)
electronically. 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.
Parameter
Current Permit
Proposed Change
Basis for Condition/Change
Flow
MA 1.0 MGD
No change
15A NCAC 2B .0505
BOD5
MA 30.0 mg/L
WA 45.0 mg/L
Monitor and Report
3/week
No change to limits
TBEL. Based on results of 1989
Level B model; DWR Guidance
Regarding the Reduction of
Monitoring Frequencies in NPDES
Permits for Exceptionally
Performing Facilities
Monitor 2/week
NH3-N
Monitor and Report
3/week
Add limits:
MA 12.6 mg/L
WA 35.0 mg/L
Monitor 2/week
WQBEL. 2021 WLA. DWR
Guidance Regarding the Reduction
of Monitoring Frequencies in
NPDES Permits for Exceptionally
Performing Facilities
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Parameter
Current Permit
Proposed Change
Basis for Condition/Change
TSS
MA 30.0 mg/L
WA 45.0 mg/L
Monitor and Report
3/Week
No change to limits
Monitor 2/week
TBEL. Secondary treatment
standards/40 CFR 133 / 15A NCAC
2B .0406; DWR Guidance
Regarding the Reduction of
Monitoring Frequencies in NPDES
Permits for Exceptionally
Performing Facilities
Fecal Coliform
MA 200 /100m1
WA 400 /100m1
Monitor and Report
3/Week
No change to limits
WQBEL. State WQ standard, 15A
NCAC 2B; DWR Guidance
Regarding the Reduction of
Monitoring Frequencies in NPDES
Permits for Exceptionally
Performing Facilities
Monitor 2/week
DO
Monitor and Report
3/Week
No change
Surface Water Monitoring, 15A
NCAC 2B. 0500
Temperature
Monitor and Report
3/Week
Monitor and Report
Daily
Frequency revised per Surface Water
Monitoring, 15A NCAC 2B. 0500
PH
6-9 SU
Monitor and Report
3/Week
No change
WQBEL. State WQ standard, 15A
NCAC 2B
Total Nitrogen
Monitor and Report
Quarterly
No change
Surface Water Monitoring, 15A
NCAC 2B. 0500
Total Phosphorous
Monitor and Report
Quarterly
No change
Surface Water Monitoring, 15A
NCAC 2B. 0500
Total Residual
Chlorine
DM 28 µg/L
Monitor and Report
2/Week
No change to limit
Monitor and report
3/Week
WQBEL. 2021 WLA. Surface Water
Monitoring, Frequency revised per
15A NCAC 2B. 0500
Total Silver
Monitor and Report
Quarterly
Monitor and Report
Monthly
Special Condition
A.(4.) Effluent Total
Silver Reopener
Based on results of Reasonable
Potential Analysis (RPA); BPJ;
increase monitoring to monthly
without addition of limit. One
detection at detection level (1 µg/L)
and several non -detects at < 5, < 3,
and < 1 µg/L - collect additional
samples
Total Hardness
Quarterly Effluent
and upstream
monitoring
No change
Hardness -dependent dissolved
metals water quality standards
approved in 2016; Pretreatment
facility
Chronic Toxicity
Chronic limit,
6% effluent
No change
WQBEL. No toxics in toxic
amounts. 15A NCAC 2B
Effluent Pollutant
Scan
Three times per
permit cycle
No change; conduct
40 CFR 122
in 2023, 2024, 2025
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Parameter
Current Permit
Proposed Change
Basis for Condition/Change
Instream Waste
Survey
No requirement
Add Special
Condition A.(5.)
To identify potential industrial
contribution and verify landfill
leachate acceptance does not require
pretreatment program
Electronic Reporting
Electronic Reporting
Special Condition
Added language for
new electronic
reporting deadline
December 21, 2025
In accordance with EPA Electronic
Reporting Rule 2015 and Rule -Phase
2 Extension
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: July 27, 2021
Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days following
the publication date of the public notice. Any request for a public hearing shall be submitted to the Director
within the 30 days comment period indicating the interest of the party filing such request and the reasons
why a hearing is warranted.
14. NPDES Division Contact:
If you have questions regarding any of the above information or on the attached permit, please contact Gary
Perlmutter at [phone] or via email at [e-mail].
15. Fact Sheet Addendum (if applicable):
Were there any changes made since the Draft Permit was public noticed (Yes/No): YES, in response to
comments by the Asheboro Regional Office (ARO) with consultation with the Permittee.
If Yes, list changes and their basis below: The system component list was changed to reflect clarification
on the sludge handling system:
• "2 sludge holding basins" was removed as these are digesters
• 3 digesters was reduced to 2
16. Fact Sheet Attachments (if applicable):
• Request for reduced monitoring frequencies with supporting data, 7/15/2021
• RPA Spreadsheet Summary
• BOD and TSS Removal
• Inspection Report, 9-23-2021
• Dissolved Metals Implementation/Freshwater
• Waste Load Allocation Spreadsheet
• Mercury TMDL Spreadsheet
• PPAs
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• Toxicity Summary
• Monitoring Report Violations summary
• E-mail draft permit response from Lauren Armeni (ARO)
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Coco, Nick A
From: Mike Mehaffey <[e-mail]>
Sent: Thursday, July 15, 2021 11:32 AM
To: Coco, Nick A
Cc: Nathan Clark
Subject: [External] Reduced Monitoring
Attachments: Maggie Valley 3 Year Mean BOD 2018 2019 2020.pdf; Maggie Valley 3 Year Mean TSS 2018 2019
2020.pdf; Maggie Valley 3 Year Mean MFC 2018 2019 2020.pdf; Maggie Valley 3 Year Mean NH3-N
2018 2019 2020.pdf
Follow Up Flag: Flag for follow up
Flag Status: Flagged
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Nick Coco
NPDES Municipal Permitting Unit
NC DEQ / Division of Water Resources / Water Quality Permitting
The Town of Maggie Valley WWTP would like to request a modification for reduced monitoring in our NPDES permit
#NC0056561 for parameters BOD5, TSS, NH3-N and fecal coliform.
All the approval criteria for reduced monitoring have been met for the Target Parameters.
Attached is the data and statistical analyses for the Target Parameters.
If any more information is needed don't hesitate to email or call. 828-400-9494.
Thanks for your help.
Mike Mehaffey (ORC)
i

Maggie Valley WWTP Effluent
2018 2019 2020
Date NH3-N (mg/L) Date NH3-N (mg/L) Date NH3-N (mg/L)
1/2/18 1.5 1/2/19 0.1 1/2/20 0.3
1/3/18 0.9 1/3/19 0.1 1/7/20 0.1
1/4/18 0.3 1/8/19 0.1 1/8/20 0.2
1/9/18 0.1 1/9/19 0.1 1/9/20 0.2
1/10/18 0.1 1/10/19 0.1 1/14/20 0.2
1/11/18 0.1 1/15/19 0.1 1/15/20 0.1
1/16/18 0.3 1/16/19 0.1 1/16/20 0.1
1/17/18 0.1 1/17/19 0.1 1/20/20 0.1
1/18/18 0.1 1/22/19 0.2 1/21/20 0.1
1/23/18 0.1 1/23/19 0.1 1/22/20 0.1
1/24/18 0.1 1/24/19 0.1 1/28/20 0.1
1/25/18 0.1 1/29/19 0.1 1/29/20 0.1
1/30/18 0.1 1/30/19 0.1 1/30/20 0.1
1/31/18 0.1 1/31/19 0.1 2/4/20 0.1
2/1/18 0.1 2/5/19 0.1 2/5/20 0.1
2/6/18 0.1 2/6/19 0.1 2/6/20 0.2
2/7/18 0.1 2/7/19 0.1 2/11/20 0.1
2/8/18 0.1 2/12/19 0.1 2/12/20 0.1
2/13/18 0.1 2/13/19 0.1 2/13/20 0.1
2/14/18 0.1 2/14/19 0.1 2/18/20 0.1
2/15/18 0.1 2/19/19 0.1 2/19/20 0.1
2/20/18 0.1 2/20/19 0.1 2/20/20 0.1
2/21/18 0.1 2/21/19 0.1 2/25/20 0.1
2/22/18 0.1 2/26/19 0.1 2/26/20 0.1
2/27/21 0.1 2/27/19 0.1 2/27/20 0.1
2/28/21 0.1 2/28/19 0.1 3/3/20 0.1
3/1/18 0.1 3/5/19 0.1 3/4/20 0.2
3/6/18 0.1 3/6/19 0.1 3/5/20 0.3
3/7/18 0.1 3/7/19 0.1 3/10/20 0.2
3/8/18 0.1 3/12/19 0.1 3/11/20 0.1
3/13/18 0.1 3/13/19 0.1 3/12/20 0.2
3/14/18 0.1 3/14/19 0.1 3/17/20 0.1
3/15/18 0.1 3/19/19 0.1 3/18/20 0.1
3/20/18 0.3 3/20/19 0.1 3/19/20 0.1
3/21/18 0.1 3/21/19 0.2 3/24/20 0.1
3/22/18 0.3 3/26/19 0.1 3/25/20 0.1
3/27/18 0.4 3/27/19 0.1 3/26/20 0.1
3/28/18 0.4 3/28/19 0.1 3/31/20 0.1
3/29/18 0.3 4/2/19 0.3 4/1/20 0.1
4/3/18 0.1 4/3/19 0.3 4/2/20 0.2
4/4/18 0.1 4/4/19 0.2 4/7/20 0.2
4/5/18 0.1 4/9/19 0.2 4/8/20 0.3
4/10/18 0.1 4/10/19 0.2 4/9/20 0.2
4/11/18 0.1 4/11/19 0.2 4/14/20 0.1

4/12/18 0.1 4/16/19 0.3 4/15/20 0.2
4/17/18 0.1 4/17/19 0.2 4/16/20 0.1
4/18/18 0.1 4/18/19 0.3 4/21/20 0.2
4/19/18 0.2 4/23/19 0.2 4/22/20 0.2
4/24/18 0.2 4/24/19 0.1 4/23/20 0.2
4/25/18 0.2 4/25/19 0.1 4/28/20 1.3
4/26/18 0.2 4/30/19 0.2 4/29/20 0.2
5/1/18 0.1 5/1/19 0.1 4/30/20 0.1
5/2/18 0.1 5/2/19 0.2 5/5/20 0.3
5/3/18 0.1 5/7/19 0.1 5/6/20 0.2
5/8/18 0.2 5/8/19 0.2 5/7/20 0.3
5/9/18 0.2 5/9/19 0.2 5/12/20 0.2
5/10/18 0.2 5/14/19 0.1 5/13/20 0.2
5/15/18 0.1 5/15/19 0.2 5/14/20 0.1
5/16/18 0.2 5/16/19 0.1 5/19/20 0.3
5/17/18 0.3 5/21/19 0.1 5/20/20 0.3
5/22/18 0.2 5/22/19 0.1 5/21/20 0.3
5/23/18 0.2 5/23/19 0.1 5/26/20 0.2
5/24/18 0.2 5/28/19 0.2 5/27/20 0.1
5/29/18 0.1 5/29/19 0.2 5/28/20 0.1
5/30/18 0.2 5/30/19 0.2 6/2/20 0.3
5/31/18 0.1 6/4/19 0.3 6/3/20 0.2
6/5/18 0.2 6/5/19 0.2 6/4/20 0.2
6/6/18 0.1 6/6/19 0.2 6/9/20 0.2
6/7/18 0.1 6/11/19 0.1 6/10/20 0.2
6/12/18 0.2 6/12/19 0.1 6/11/20 0.1
6/13/18 0.2 6/13/19 0.1 6/16/20 0.2
6/14/18 0.2 6/18/19 0.1 6/17/20 0.3
6/19/18 0.2 6/19/19 0.1 6/18/20 0.2
6/20/18 0.1 6/20/19 0.1 6/23/20 0.2
6/21/18 0.1 6/25/19 0.2 6/24/20 0.2
6/26/18 0.2 6/26/19 0.2 6/25/20 0.2
6/27/18 0.1 6/27/10 0.2 6/30/20 0.2
6/28/18 0.3 7/2/19 0.3 7/1/20 0.3
7/2/18 0.3 7/3/19 0.3 7/2/20 0.7
7/3/18 0.1 7/5/19 0.3 7/7/20 0.3
7/5/21 0.3 7/9/19 0.9 7/8/20 0.3
7/10/18 0.2 7/10/19 0.2 7/9/20 0.2
7/11/18 0.2 7/11/19 0.2 7/14/20 0.3
7/12/18 0.2 7/16/19 0.2 7/15/20 0.2
7/17/18 0.2 7/17/19 0.1 7/16/20 0.2
7/18/18 0.2 7/18/19 0.1 7/21/20 0.3
7/19/18 0.2 7/23/19 0.1 7/22/20 0.3
7/24/18 0.2 7/24/19 0.1 7/23/20 0.2
7/25/18 0.2 7/25/19 0.1 7/28/20 0.2
7/26/18 0.2 7/30/19 0.5 7/29/20 0.2
7/31/18 0.2 7/31/19 0.2 7/30/20 0.2

8/1/18 0.3 8/1/19 0.3 8/4/20 0.2
8/2/18 0.1 8/6/19 0.2 8/5/20 0.1
8/7/18 0.1 8/7/19 0.2 8/6/20 0.1
8/8/18 0.1 8/8/19 0.2 8/11/20 0.2
8/9/18 0.2 8/13/19 0.2 8/12/20 0.3
8/14/18 0.2 8/14/19 0.3 8/13/20 0.3
8/15/18 0.4 8/15/19 0.3 8/18/20 0.2
8/16/18 0.1 8/20/19 0.2 8/19/20 0.2
8/21/18 0.1 8/21/19 0.1 8/20/20 0.2
8/22/18 0.1 8/22/19 0.1 8/25/20 0.2
8/23/18 0.1 8/27/19 0.1 8/26/20 0.2
8/28/18 0.1 8/28/19 0.2 8/27/20 0.3
8/29/18 0.1 8/29/19 0.1 9/1/20 0.2
8/30/18 0.1 9/3/19 0.1 9/2/20 0.2
9/4/18 0.3 9/4/19 0.1 9/3/20 0.2
9/5/18 0.1 9/5/19 0.1 9/8/20 0.5
9/6/18 0.2 9/10/19 0.2 9/9/20 0.3
9/11/18 0.2 9/11/19 0.2 9/10/20 0.4
9/12/18 0.2 9/12/19 0.2 9/15/20 0.4
9/13/18 0.2 9/17/19 0.2 9/16/20 0.4
9/18/18 0.1 9/18/19 0.3 9/17/20 0.3
9/19/18 0.1 9/19/19 0.2 9/22/20 0.3
9/20/18 0.1 9/24/19 0.2 9/23/20 0.2
9/25/18 0.1 9/25/19 0.2 9/24/20 0.2
9/26/18 0.1 9/26/19 0.4 9/29/20 0.2
9/27/18 0.1 10/1/19 0.3 9/30/20 0.2
10/2/18 0.2 10/2/19 0.3 10/1/20 0.2
10/3/18 0.2 10/3/19 0.5 10/6/20 0.2
10/4/18 0.2 10/8/19 0.9 10/7/20 0.2
10/9/18 0.1 10/9/19 0.9 10/8/20 0.2
10/10/18 0.2 10/10/19 0.4 10/13/20 0.1
10/11/18 0.1 10/15/19 0.4 10/14/20 0.2
10/16/18 0.3 10/16/19 0.4 10/15/20 0.3
10/17/18 0.2 10/17/19 0.8 10/20/20 0.4
10/18/18 0.2 10/22/19 0.2 10/21/20 0.4
10/23/18 0.2 10/23/19 0.2 10/22/20 0.3
10/24/18 0.2 10/24/19 0.2 10/27/20 0.3
10/25/18 0.1 10/29/19 0.1 10/28/20 0.2
10/30/18 0.1 10/30/19 0.1 10/29/20 0.3
10/31/18 0.1 10/31/19 0.4 11/3/20 0.3
11/1/18 0.1 11/5/19 0.5 11/4/20 0.2
11/6/18 0.1 11/6/19 0.3 11/5/20 0.2
11/7/18 0.1 11/7/19 0.2 11/10/20 0.2
11/8/18 0.1 11/12/19 0.2 11/11/20 0.1
11/13/18 0.1 11/13/19 0.2 11/12/20 0.1
11/14/18 0.1 11/14/19 0.1 11/17/20 0.2
11/15/18 0.1 11/19/19 0.1 11/18/20 0.1

11/19/21 0.1 11/20/19 0.3 11/19/20 0.1
11/20/18 0.1 11/21/19 0.2 11/23/20 0.2
11/21/21 0.1 11/25/19 0.1 11/24/20 0.2
11/27/18 0.1 11/26/19 0.2 11/25/20 0.1
11/28/18 0.1 11/27/19 0.2 12/1/20 0.1
11/29/18 0.1 12/3/19 0.1 12/2/20 0.1
12/4/18 0.1 12/4/19 0.2 12/3/20 0.1
12/5/18 0.1 12/5/19 0.1 12/8/20 0.1
12/7/18 0.1 12/10/19 0.2 12/9/20 0.2
12/11/18 1.6 12/11/19 0.1 12/10/20 0.2
12/12/18 1.3 12/12/19 0.4 12/15/20 0.2
12/13/18 1.5 12/17/19 0.1 12/16/20 0.1
12/18/18 0.1 12/18/19 0.1 12/17/20 0.1
12/19/18 0.2 12/19/19 0.1 12/21/20 0.2
12/20/18 0.1 12/23/19 0.1 12/22/20 0.1
12/26/18 0.1 12/24/19 0.1 12/23/20 1.5
12/27/18 0.2 12/26/19 0.1 12/29/20 0.3
12/28/18 0.4 12/30/19 0.2 12/30/20 0.4
12/31/18 0.1 12/31/19 0.5 12/31/20 0.4
Arithmatic Mean 0.200 mg/L
Monthly Average Limit N/A mg/L
Target (1/2 Monthly Average Limit) N/A mg/L
Samples over 200% Monthly Average Limit N/A

Maggie Valley WWTP Effluent
2018 2019 2020
Date Fecal Coliform Date Fecal Coliform Date Fecal Coliform
1/2/18 8 1/2/19 3 1/2/20 3
1/3/18 3 1/3/19 3 1/7/20 3
1/4/18 3 1/8/19 3 1/8/20 3
1/9/18 3 1/9/19 3 1/9/20 3
1/10/18 3 1/11/21 3 1/14/20 3
1/11/18 3 1/15/19 9 1/15/20 6
1/16/18 3 1/16/19 3 1/16/20 3
1/17/18 3 1/17/19 3 1/20/20 3
1/18/18 3 1/22/19 3 1/21/20 3
1/23/18 5 1/23/19 3 1/22/20 3
1/24/18 3 1/24/19 3 1J28/20 3
1/25/18 3 1/28/19 3 1/29/20 3
1/30/18 5 1/29/19 3 1/30/20 3
1/31/18 3 1/30/19 3 2/4/20 3
2/1/18 3 2/5/19 3 2/5/20 34
2/6/18 3 2/6/19 3 2/6J20 3
2/7/18 3 2/7/19 3 2/11/20 51
2/8/18 3 2/12/19 3 2/12/20 3
2/13/18 3 2/13/19 34 2/7.3/20 26
2/14/7,8 3 2/14/19 3 2/18/20 3
2/15/18 3 2/19/19 80 2/19/20 3
2/20/18 3 2/20/19 3 2/20/20 3
2/21/18 3 2/21/19 69 2/25/20 3
2/22/18 3 2/26/19 3 2/26/20 3
2/27/21 3 2/27/19 3 2/27/20 3
2/28/21 3 2/28/19 3 3/3f20 3
3/1/18 3 3/5/19 3 3/4/20 3
3/6/18 3 3/6/19 3 3/5/20 3
3/7/18 3 3/7/19 3 3/10/20 3
3/8/18 3 3/12/19 3 3/11/20 20
3/13/18 3 3/13/19 3 3/12/20 3
3/14/18 3 3/14/19 6 3/17/20 3
3/15/18 3 3/19/19 3 3/18/20 3
3/20/18 3 3/20/19 3 3/19/20 3
3/21/18 3 3/21/19 3 3/24/20 3
3/22/1$ 3 3/26/19 1200 3/25/20 3
3/27/18 3 3/27/19 6 3/26/20 3
3/28/18 3 3/28/19 3 3/31/20 3
3/29/18 3 4/2/19 3 4/1/20 3
4/3/18 3 4/3/19 11 4/2/20 3
4/4/18 3 4/4/19 3 4/7/20 3
4/5/18 3 4/9/19 3 4/8/20 3
4/10/18 3 4/10/19 3 4/9/20 3
4/11/18 3 4/11/19 3 4/14/20 3

4/12/18 5 4/16/19 3 4/15/20 3
4/17/18 160 4/17/19 3 4/16/20 3
4/18/18 3 4/18/19 3 4/21/20 3
4/19/18 3 4/23/19 3 4/22/20 3
4/24/18 40 4/24/19 3 4/23/20 3
4/25/18 3 4/25/19 3 4/28/20 3
4/26/18 3 4/30/19 3 4/29/20 3
5/1/18 3 5/1/19 3 4/30/20 3
5/2/18 3 5/2/19 3 5/5/20 3
5/3/18 3 5/7/19 3 5/6/20 3
5/8/18 3 5/8/19 3 5/7/20 3
5/9/18 3 5/9/19 3 5/12/20 40
5/10/18 9 5/14/19 3 5/13/20 3
5/15/18 83 5/15/19 3 5/14{20 3
5/16/18 3 5/16/19 3 5/19/20 3
5/17/18 3 5/21/19 3 5/20/20 3
5/22/18 3 5/22/19 6 5/21/20 9
5/23/18 3 5/23/19 3 5/26/20 3
5/24/18 3 5/28/19 6 5/27/20 3
5/29/18 3 5/29/19 11 5/28/20 3
5/30/18 693 5/30/19 29 6/2/20 3
5/31/18 3 6/4/19 34 6/3/20 3
6/5/18 3 6/5/19 17 6/4/20 67
6/6/18 11 6/6/19 60 6/9/20 3
6/7/18 3 6/11/19 11 6/10/20 3
6/12/18 9 6/12/19 14 6/11/20 3
6/13/18 6 6/13/19 190 6/16/20 3
6/14/18 6 6/18/19 9 6/17/20 3
6/19/18 3 6/19/19 147 6/18/20 3
6/20/18 11 6/20/19 9 6/23/20 3
6/21/18 3 6/25/19 9 6/24/20 3
6/26/18 440 6/26/19 9 6/25/20 3
6/27/18 3 6/27/10 6 6/30/20 3
6/2$/18 9 7/2/19 3 7/1f20 3
7/2/18 3 7/3/19 3 7/2/20 3
7/3/18 3 7/5/19 3 7/7/20 3
7/5/21 26 7/9/19 51 7/8/20 3
7/10/18 11 7/10/19 so 7/9/20 6
7/11/18 3 7/11/19 3 7/14/20 3
7/12/18 9 7/16/19 9 7/15/20 3
7/17/18 11 7/17/19 14 7/16/20 3
7/18/18 9 7/18/19 163 7/21/20 3
7/19/18 167 7/23/19 57 7/22/20 3
7/24/18 6 7/24/19 6 7/23/20 3
7/25/18 14 7/25/19 3 7/28/20 3
7/26/1$ 20 7/30/19 9 7/29/20 3
7/31/18 1200 7/31/19 87 7/30/20 3

8/1/18 6 8/1/19 9 8/4/20 3
8/2/18 17 8/6/19 9 8/5/20 180
8/7/18 6 8/7/19 193 8/6/20 3
8/8/18 6 8/8/19 11 8/11/20 3
8/9/18 9 8/13/19 3 8/12/20 3
8/14/18 29 8/14/19 40 8/13/20 3
8/15/18 17 8/15/19 77 8/18/20 3
8/16/18 3 8/20/19 3 8/19%20 3
8/21/18 6 8/21/19 3 8/20/20 3
8/22/18 1200 8/22/19 3 8/25/20 3
8/23/18 3 8/27/19 6 8/26/20 3
$/28/18 9 8/28/19 9 8/27/20 3
8/29/18 3 8/29/19 470 9/1/20 3
8/30/18 3 9/3/19 9 9/2/20 3
9/4/18 37 9/4/19 23 9/3/20 3
9/5/18 51 9/5/19 29 9/8/20 3
9/6/18 17 9/10/19 31 9/9/20 3
9/11/18 3 9/11/19 23 9/10/20 3
9/12/18 23 9/12/19 3 9/15/20 3
9/13/18 9 9/17/19 14 9/16/20 3
9/18/18 3 9/18/19 3 9/17/20 3
9/19/18 43 9/19/19 3 9/22/20 3
9/20/18 11 9/24/19 3 9/23/20 3
9/25/18 17 9/25/19 17 9/24/20 3
9/26/18 11 9/26/19 26 9/29/20 3
9/27/18 3 10/1/19 560 9/30,/20 3
10/2/1$ 57 10/2/19 83 10/1/20 3
10/3/18 14 10/3/19 34 10/6/20 3
10/4/18 20 10/8/19 189 10/7/20 3
10/9/18 31 10/9/19 40 10/8/20 3
10/10/18 11 10%10/19 480 10/13/20 3
10/11/18 14 10/15/19 280 10/14/20 3
10/16/18 6 10/16/19 314 10/15/20 3
10/17/18 3 10/17/19 920 10/20/20 3
10/18/18 9 10/22/19 26 10/21/20 6
10/23/18 11 10/23/19 9 10/22/20 3
10/24/18 3 10/24/19 9 10/27/20 3
10/25/18 9 10/29/19 3 10/28/20 3
10/30/18 3 10/30/19 3 10/29/20 29
10/31/18 3 10/31/19 3 11/3/20 3
11/1/18 3 11/5/19 2940 11/4/20 3
11/6/1.8 3 11/6/19 49 11/5/20 3
11/7/18 3 11/7/19 3 11/10/20 34
11/8/18 3 11/12/19 3 11/11/20 3
11/13/18 3 11/13/19 3 11/12/20 3
11/14/18 3 11/14/19 11 11/17/20 3
11/15/18 3 11/19/19 3 11/18/20 3

11/19/21 3 11/20/19 3 11/19/20 3
11/20/18 3 11/21/19 3 11/23/20 3
11/21/21 11 11/25/19 3 11/24/20 3
11/27/18 3 11/26/19 1260 11/25/20 3
11/28/18 3 11/27/19 3 12/1/20 3
11/29/18 3 12/3/19 3 12/2/20 3
12/4/18 3 12/4/19 3 12/3/20 29
12/5/18 3 12/5/19 3 12/8/20 3
12{7/18 3 12/10/19 3 12/9/20 3
12/11/18 3 12/11/19 3 12/10/20 3
12/12/18 3 12/12/19 3 12/15/20 3
12/13/18 3 12/17/19 10 12/16/20 3
12/18/18 3 12/18/19 3 12/17/20 3
12/19/18 3 12/19/19 3 12/21/20 3
12/20/18 3 12/23/19 3 12/22/20 3
12/26/18 3 12/24/19 3 12/23/20 43
12/27/18 3 12/26/19 3 12/29/20 3
12/28/18 54 12/31f19 3 12f30/20 3
12/31/18 3 1/1/20 11 12/31/20 3
Geometric Mean
Monthly Average Limit
Target (1/2 Monthly Average Limit)
Samples over 200% Weekly Average Limit (800)*
* (no more than 20 samples)
5.692 mg/L
200 Cts/100m1
100.0 cts/100m1

Maggie Valley WWTP Effluent
2018 2019 2020,
Date TSS (mg/L) Date TSS (mg/L) Date TSS (rng/L)
1/2/18 14.7 1/2/19 6 1/2/20 4.2
1/3/18 14.3 1/3/19 5.8 1/7120 4•9
1/4/18 9.4 1/8/1.9 5.1 1/8/20 5.8
1/9118 16.7 1/9/19 4.7 1/9/20 4.3
1/10/18 12.1 1/10/19 4.2 1/14/20 4.4
1/11/18 15.6 1/15/19 4.6 1/15/20 5.3
1/16/18 14.8 1/16/19 4.5 1/16/20 6.1
1/17/18 14.4 1/17/19 4.9 1/20120 4.4
1/18/18 17.9 1/22/19 9.2 1/21/20 10.4
1/23/18 10.6 1/23/19 5.3 1/22/20 7.1
1/24/18 11.1 1/24119 11.6 1/28/20 10.4
1/25/18 11.3 1/29/19 4.5 1/29/20 15.7
1/30/18 12.3 1/30/19 8.4 1/30/20 13.0
1/31/18 9.3 1/31/19 6.4 2/4/20 7.7
2/1/18 9.1 2/5/19 71 2/5/20 6.5
2f6/18 10.5 2/6/19 4.1 2/6/20 7.7
2/7/18 6.3 2/7/19 4.1 2/11/20 7.9
2/8/18 12 2J12119 4.2 2/12/20 7.5
2/13/18 8.4 2/13/19 10.2 2/13/20 6.7
2/14/18 8.8 2/14/19 6.7 2/18/20 9.6
2/15/18 5.2 2/19/19 8.5 2/19/20 10.1
2/20/18 6.3 2/20/19 8.5 2/20/20 6.1
2/21/18 4.7 2/21/19 8.6 2/25/20 5.2
2/22/18 3.4 2/26/19 10.2 2/26/20 7.7
2/27/21 6 2/27/19 9.4 2/27/20 7.7
2/28/21 6.5 2/28/19 11 3/3/20 7.7
3/1/18 6.7 3/5/19 11.3 3/4/20 8.7
3/6/18 5.9 3/6/19 22.7 3/5f20 7.3
3/7/18 7 3/7/19 6.3 3/10/20 6.0
3/8/18 7.2 3/12/19 7.8 3/11/20 5.1
3/13J18 9 3/13/19 7.8 3/12/20 6.7
3/14/18 11.5 3/14/19 7.3 3/17/20 6.8
3/15/18 12.4 3/19 f 19 2.6 3/18/20 5.1
3/20/18 7.2 3/20/19 8 3/19/20 2.8
3/21/18 10 3/21/19 5.7 3/24/20 7.1
3/22/18 9.8 3/26/19 6 3/25/20 6.7
3/27/18 9.7 3/27/19 6.8 3/25/20 7.7
3/28/18 6.6 3/28/19 5.9 3/31/20 10.0
3/29/18 12.5 4/2/19 7.5 4/1/20 7.2
4/3/18 7.5 4/3/19 6.4 4/2/20 5.9
4/4/18 8 4/4/19 6.5 4/7/20 5.2
4/5/18 6.6 4/9/19 4.7 4/8/20 7.9
4/10/18 10.8 4/10/19 3.3 4/9/20 4.8
4/11/18 7.4 4/11/19 2.5 4/14/20 7.5

4/12/18 10.2 4/16/19 6.5 4/15/20 5.3
4/17/18 10.3 4/17/19 4.9 4/16/20 8.2
4/18/18 7.4 4/18/19 4.2 4/21/20 9.3
4/19/18 7.4 4/23/19 2.9 4/22/20 9.1
4/24f18 10.5 4/24/19 4.1 4f23/20 9.3
4/25/18 9.3 4/25/19 3 4/28/20 11.8
4/26/18 6.4 4130/19 4.4 4/29/20 9.2
5/1/18 7.8 5/1/19 2.5 4/30/20 11.0
5/2/18 9.3 5/2/19 2.5 5/5/20 8.8
5/3/18 9 5/7/19 4 516/20 7.2
5/8/18 9 5/8/19 2.5 517/20 6.7
5/9/18 9 5/9/19 2.5 5/12/20 6.7
5/10/18 7.8 5/14/19 3.8 5/13/20 7.3
5/15/18 5.2 5/15/19 3.7 5/14/20 7•5
5/16/18 4.8 5/16/19 4.9 5/19/20 5.0
5/17/18 5.8 5/21/19 3.8 5/20/20 5.0
5/22/18 4.1 5/22/19 3 5[21/20 5.4
5/23/18 3 5/23/19 4.1 5/26/20 3.9
5/24/18 4.2 5/28/19 4.5 5/27/20 3.1
5/29/18 3.5 5/29/19 2_5 5/28/20 4.5
5/30/18 4.5 5/30/19 3.3 6/2/20 4•0
5/31/18 2.8 6/4/19 2.5 6/3/20 4.3
6/5/18 4.5 6/5/19 2.5 6/4/20 5.3
6/6/18 3.5 6/6/19 2.6 6/9/20 3.8
6/7/18 4.1 6/11/19 3.1 6/10/20 2.5
6/12/18 4.3 6/12/19 2.6 6/11/20 3.6
6/13/18 2.9 6f13/19 4.3 6/16/20 3•9
6/14118 3.6 6/18/19 2.5 6/17/20 4.3
6/19/18 2.5 6/19/19 3.3 6/18/20 3.5
6/20/18 2.5 6%20/19 2.6 6/23/20 3.4
6/21/18 3.6 6/25/19 2.5 6/24/20 2.8
6/26/18 2.5 6/26/19 3 6/25/20 2.7
6/27/18 2.5 6/27/10 2.5 6/30/20 4.6
5/28/18 3.6 7/2/19 3.6 7/1/20 2.6
7/2/18 2.5 7/3/19 3.1 7/2/20 3.1
7/3/18 2.6 7/5/19 3.3 7/7/20 3.9
7/5/21 2.5 7/9/19 6.9 7/8/20 3.4
7/10/18 2.5 7I10/19 2.6 7/9/20 2.5
7/11/18 2.8 7/11/19 3.2 7114/20 2.5
7/12/18 3 7/16/19 4 7/15/20 2.8
7/17/18 4.1 7/17/19 2.8 7/15/20 3.5
7/18/18 3.1 7/18/19 3.8 7/21/20 2.5
7/19/18 3 7/23/19 4 7/22/20 2.5
7/24/18 3.3 7/24/19 2.7 7/23/20 2.5
7/25/18 3.4 7/25/19 4 7/28/20 2.5
7/26/18 3.3 7/30/19 3.1 7/29/20 2.5
7/31/18 10 7/31/19 2.7 7/30/20 3.1

8/1/18 5.5 8/1/19 2.5 8/4/20 3.1
8/2/18 4.2 8/6/19 2.9 8/5/20 2.5
8/7/18 2.5 8/7/19 2.6 8/6/20 2.6
8/8/18 2.5 8/8/19 3.1 8/11/20 2.5
8/9/18 2.5 8/13/19 2.5 8/12/20 2.6
8/14/18 2.6 8/14/7.9 2.6 8/13/20 2.5
8/15/18 25 8/15/19 3.1 8/18/20 2.5
8/16/18 2.5 8/20/19 2.6 8/19/20 2.5
8/21/18 2.5 8/21/19 2.5 8/20/20 2.5
8f 22/18 2.5 8/22/19 2.5 8/25/20 2.5
8/23/18 2.5 8/27/19 2.5 8/26/20 2.5
8/28/18 2.5 8/28/19 2.6 8/27/20 2.5
8/29/18 2.5 8/29/19 2.5 9f 1f 20 3.2
8/30/18 2.5 9/3/19 2.5 9/2/20 2.8
9/4/18 2.5 9/4/19 2.6 9/3/20 2.9
9/5/18 2.5 9/5/19 2.5 9/8/20 4.0
9/6/18 3.6 9/10/19 2.5 9/9/20 4.1
9/11/18 2.5 9/11/19 2.5 9/10/20 4.5
9/12/18 2.5 9/12/19 2.5 9/15/20 4.1
9/13/18 2.5 9/17/19 2.5 9 f 16J20 3.6
9/18/18 2.5 9/18/19 2.5 9/17/20 4.1
9/19/18 2.5 9/19/19 2.5 9/22/20 4.5
9/20/18 3.6 9/24/19 2.5 9/23/20 5.9
9/25/18 2.5 9/25/19 2.5 9/24/20 3.8
9/26/18 2.5 9/26/19 3.2 9/29/20 6.0
9/27/18 3.4 10/1/19 4.7 9/30/20 8.0
10/2/18 2.7 10/2/19 5.8 10/1/20 7.4
10/3/18 2.5 10/3/19 7.1 10/6/20 9.0
10/4/18 2.5 10/8/19 7.7 10 f 7 f 20 9.6
10/9/18 2.5 10/9/19 7.6 10/8/20 6.4
10/10/18 2.5 10/10/19 6.2 10/13/20 8.6
10/11/18 3.5 10/15/7.9 8.6 10/14/20 12.2
10/15/18 2.5 10/16/19 6.2 10/15/20 7.4
10/17/18 3.5 10/17/19 6.2 10/20/20 7.8
10/18/18 2.5 10/22/19 5.4 10/21/20 6.9
10/23/18 2.5 10123/19 5.5 10 f 22f 20 6.3
10/24/18 2.5 10/24/19 6.3 10/27/20 3.9
10/25/18 2.6 10/29/19 4.5 10/28/20 4.3
10/30/18 3.4 10/30/19 4.5 10/29/20 7.8
10/31/18 2.6 10/31/19 4.5 11/3/20 10.7
11/1/18 2.5 11/5/19 5.8 11/4/20 16.2
11/6/18 2.5 11/6/19 5.1 11/5/20 8.2
11/7/18 3.5 11/7/19 6.1 11/10/20 5.9
11/8/18 2.6 11/12/19 8.7 11/11/20 2.5
11/13/18 3.5 11/13/19 8.9 11/12/20 4.4
11/14/18 3.7 11/14/19 11_2 11/17/20 7.5
11/15/18 4.2 11/19/19 7.3 11/18/20 7.7

11/19/21 3.4
11/20/18 3.9
11/21/21 3.0
11/27/18 9.8
11/28/18 8.8
11/29/18 4.9
12f4/18 5.1
1215/1$ 4.7
12/7/18 5.3
12/11/18 18.4
12/12/18 14.4
12/13/18 2.5
12/18/18 9
12/19/18 8.0
12/20/18 7.2
12/26/18 10.2
12/27/1$ 13.6
12/28/18 16.3
12/31/18 7.2
11/20/19 6.4
11/21/19 7.3
11/25/19 7
11/26/19 5.8
11/27/19 8.2
12/3/19 4.3
12/4/19 2.6
12/5/19 4.6
12/10/19 5.4
12/11/19 3.9
12/12/19 4.2
12/17/19 4.6
12/18/19 4.2
12/19/19 4.5
12/23/19 4.1
I2/24/19 5.5
12/26/19 6.6
12{30/19 3.2
12/31/19 3.1
11/19/20
11/23/20
11/24/20
11/25/20
12/1/20
12/2/20
tz/Vzo
12/8/20
12/9/20
12/10/20
12/15/20
12/16/20
12/17/20
12/21/20
12/22/20
12/23/20
12/29/20
12/30/20
12/31/2Q
Arithmatic Mean
Monthly Average Limit
Target (1/2 Monthly Average Limit)
Samples over 200°% Monthly Average Limit
7.5
5.5
4.2
.
9
6.0
5.4
_
6.5
6.0
3.2
8.4
9.6
10.8
10.2
11.7
9.2
13.2
14.8
6.9
5.70
mg/L
30.0 mg/L
15.0 ma
0

Maggie Valley WWTP Effluent
2.018 2019 2020
Date BOD (mg/L) Date BOD (mg/L) Date BOD (mg/L)
1/2/18 2.0 1/2/19 6.8 1/2/20 9.3
1/3/18 4.2 1/3/19 4.1 1/7/20 9.9
1/4/18 6.3 1/8/19 5.0 1/8/20 2.3
1/9/18 7.3 1/9/19 2.7 1/9/20 2.7
1/10/18 4.2 1/10/19 4.3 1/14/20 5.4
1/11/18 3.2 1/15/19 5.4 1/15/20 5.3
1/16/18 4.2 1/16/19 4.5 1/16/20 3.4
1/17/18 9.2 1/17/19 5.6 1/20/20 3.3
1/18/18 7.6 1/22/19 5.2 1/21/20 3.5
1/23/18 5.8 1/23/19 5.2 1/22/20 2.9
1/24/18 9.3 1/24/19 6.7 1/28/20 5.5
1/25/18 3.7 1/29/19 26.1 1/29/20 3.4
1/30/18 4.5 1/30/19 3.4 1/30/20 3.8
1/31/18 4.9 1/31/19 4.2 2/4/20 7.6
2/1/18 4.7 2/5/19 4.8 2/5/20 4.9
2/6/18 2.6 2/6/19 2.8 2/6{20 2.2
2/7/18 7,2 2/7/19 2.4 2/11/20 2.6
2/8/18 6.9 2/12/19 3.4 2/12/20 6.6
2/13/18 7.7 2/13119 4.7 2/13/20 2.9
2/14/18 2.5 2/14/19 7.4 2/18/20 3.5
2/15/18 9.6 2/19/19 2.9 2/19/20 4.4
2/20/18 4.7 2/20/19 4.8 2/20/20 2.9
2/21/18 2.0 2/21/19 4.2 2/25/20 5.6
2/22/18 2.7 2/26/19 4.4 2/26/20 4.2
2/27/21 6.9 2/27/19 3.5 2/27/20 7.4
2/28/21 2.6 2/28/19 3.7 3/3/20 3.1
3/1/18 5.6 3/5/19 3.7 3/4/20 3.7
3/6/18 4.4 3f6/19 4.9 3/5/20 4.3
3/7/18 8.7 3/7/19 4.0 3/10/20 3.1
3/8/18 2.4 3/12/19 4.0 3/11/20 8.1
3/13/18 9.8 3/13/19 3.5 3/12/24 6.6
3/14/18 5.2 3/14/19 5.7 3/17/20 3.6
3/15/18 16.9 3/19/19 4.7 3/18/20 4.5
3/20/18 3.4 3/20/19 2.9 3/19/20 4.3
3/21/18 3.6 3/21/19 5.0 3/24/20 2.8
3/22/18 19.7 3/26/19 2.7 3/25/20 6.0
3/27/18 4.2 3/27/19 5.7 3/26J20 4.4
3/28/18 4.4 3/28/19 3.1 3/31/20 6.9
3/29/18 4.4 4/2/19 2.9 4/1/20 4.1
4/3/18 4.0 4/3/19 3.0 4/2/20 8.8
4/4/18 12.4 4/4/19 3.6 4/7/20 6.9
4/5/18 9.8 4/9/19 3.7 4/8/20 2.8
4/30/18 5.3 4/10/19 2.5 4/9/20 7.6
4/11/18 17.1 4/11/19 3.4 4/14/20 9.1

4/12/18 4.6 4/16/19 2.6 4/15/20 5.1
4/17/18 2.3 4/17/19 2.3 4/16/20 3.8
4/18/18 7.3 4/18/19 3.0 4/21/20 3.4
4/19/18 3.5 4/23/19 5.2 4/22/20 7.0
4/24/18 5.9 4/24/19 2.0 4/23/20 7.9
4/25/18 5.5 4/25/19 2.3 4/28/20 4.9
4/26/18 23.7 4/30/19 4.5 4/29/20 3.5
5/1/18 11.0 5/1/19 6.1 4/30/20 4.6
5/2/18 Si 5/2f19 4.6 5/5/20 5.5
5/3/18 2.1 5/7/3.9 2.8 5/6/20 5.2
5/8/18 4.1 5/8/19 2.4 5/7/20 5.5
5/9/18 4.2 5/9/19 3.7 5/12/20 6.6
5/10/18 2.8 5/14/19 2.9 5/13/20 3.9
5/15/18 3.5 5/15/19 6.1 5/14/20 4.9
5 f 16/18 2.2 5/16/19 2.9 5/19/20 4.5
5/17/18 3.3 5/21/19 5.2 5/20/20 3.1
5/22/18 2.2 5/22/19 6.1 5/21/20 4.6
5/23{18 2.3 5/23/19 3.5 5/26/20 3.1
5/24/18 2.3 5/28/19 2.5 5/27/20 4.1
5/29/18 4.9 5/29/19 7.4 5/28/20 3.3
5/30/18 2.2 5/30/19 3.2 6/2/20 10.2
5/31/18 2.0 6/4/19 6.8 6/3/20 7.3
6/5/18 2.2 6/5/19 6.7 6/4/20 21.2
6/6/18 4.7 6/6/19 4.4 6/9/20 15.9
6/7/18 2.2 6/11/19 2.1 6/10/20 2.0
6/12/18 4.4 6/12/19 2.5 6/11/20 17.5
6/13/18 2.5 6/13/1,9 3.0 6/16/20 2.5
6/14/18 3.2 6/18/19 8.0 6/17/20 7.3
6/19/18 2.2 6/19/19 4.0 6/18/20 20.7
6/20/18 2.2 6/20/19 3.8 6/23/20 13.8
6/21/18 2.7 6/25/19 3.4 6/24/20 2.8
6/26/18 3.4 6/26/19 6.9 6/25/20 3.1
6/27/18 2.0 6/27/10 6.9 6/30/20 2.6
6/28/18 2.0 7f2/19 2.1 7/1/20 2.1
7I2f18 4.7 7/3/19 2.1 7/2/20 3.0
7/3/18 2.3 7/5/19 3.1 7/7/20 2.7
7/5/21 7.7 7/9/19 12.4 7/8/20 3.3
7/10/18 7.4 7/10/19 13.9 7/9/20 2.2
7/11/18 2.8 7/11/19 2.0 7/14/20 3.2
7/12/18 2.2 7/16/19 4.7 7/15/20 2.2
7/17/18 3.7 7/17/19 2.7 7/16/20 2.3
7/18/18 3.4 7/18/19 2.3 7/21/20 4.4
7/19/18 6.9 7/23/19 3.2 7/22/20 2.6
7/24/18 2.9 7/24/19 2.1 7/23/20 2.0
7/25/18 3.5 7/25/19 2.1 7/28/20 3.1
7/26/1$ 3.6 7/30/19 14.0 7/29/20 2.3
7/31/18 3.1 7/31/19 7.9 7/30/20 2.0

8/1/18 3.8 8/1/19 8.0 8/4/20 2.5
8/2/18 5.1 8/6/19 3.8 8/5/20 2.1
8l7/18 2.2 8/7/19 4.0 8/6/20 2.0
8/8/18 8.4 8/8/19 2.5 8/11/20 2.3
8/9/18 2.4 8/13/19 2.0 8/12/20 3.1
8/14/18 2.1 8/14/19 12.3 8/13/20 2.0
8/15/18 2.0 8/15/19 14.7 8/18/20 2.3
8/15/18 2.0 8/20/19 2.4 8/19/20 2.3
8/21/18 2.2 8/21/19 2.3 8/20/20 2.0
8/22/18 2.0 8/22/19 2.1 8/25/20 3.0
8/23/18 2.0 8/27/19 11.7 8/26/20 2.0
8/28/18 2.3 8/28/19 2.1 8/27/20 4.3
8/29/18 2.0 8/29/19 2.0 9/1/20 2.7
8/30/18 2.0 9/3/19 2.2 9/2/20 2.4
9/4/18 2.4 9/4/19 2.5 9/3/20 2.2
9/5/18 9.7 9/5/19 20.7 9/8/20 3.3
9/6/18 2.0 9/10/19 20.5 9/9/20 2.7
9/11/18 2.6 9/11/19 2.1 9/10/20 4.1
9/12/18 3.9 9/12/19 10.3 9/15/20 3.7
9/13/18 6.2 9/17 f 19 23.1 9/16/20 3.4
9/18/18 2.0 9/18/19 16.5 9/17/20 2.1
9/19/18 2.0 9/19/19 2.4 9/22/20 3.8
9/20/18 2.0 9/24/19 9.9 9/23/20 5.3
9/25/18 2.7 9/25/19 2.5 9/24/20 3.0
9/26/1.8 24.3 9/26/19 3.0 9/29/20 4.1
9/27/18 2.2 10/1/19 3.2 9/30/20 3.4
10/2/18 2.3 10/2/19 2.8 10/1/20 5.6
10/3/18 3.5 10/3/19 4.2 10/6/20 3.7
10/4/18 2.0 10/8/19 5.4 10/7/20 4.0
10/9/18 6.9 10/9/19 6.3 10/8/20 3.9
10/10/18 6.2 10/10/19 7.3 10J13/20 3.4
10/11/18 2.2 10/15/19 6.1 10/14/20 2.0
10/16/18 8.5 10/16/19 10.6 10/15/20 25.1
10/17/18 5.7 10/17/19 5.0 10/20/20 4.1
10/18/18 4.6 10/22/19 4.5 10/21/20 5.1
10j23/18 4.6 10/23/19 3.1 10/22/20 3.5
10/24/18 7.4 10/24/19 3.5 10/27/20 4.1
10/25/18 7.1 10/29/19 2.0 10/28/20 4.6
10/30/18 6.7 10/30/19 4.4 10/29/20 3.8
10/31/18 2.2 10/31,/19 3.4 11/3/20 5.7
11/1/18 4.9 11/5/19 5.1 11/4/20 4.3
11/6/18 3.0 11/6/19 6.5 11/5/20 4.6
11/7/18 2.1 11/7/19 22.8 11/10/20 4.9
11/8/18 2.0 11/12/19 7.0 11/11/20 2.0
11/13/18 3.9 11/13/19 4.7 11/12/20 5.0
11/14/18 5.5 11/14/19 5.7 11/17/20 5.1
11/15/18 2.4 11/19/19 5.0 11/18/20 4.4

11/19/21 3.3 11/20/19 5.7 11/19/20 3.0
11/20/18 2.7 11/21/19 6.6 11/23/20 5.3
11/21/21 2.0 11/25/19 3.9 11./24/20 4.8
11/27/18 3.8 11/25/19 3.6 11/25/20 4.2
11/28/18 6.2 11/27/19 8.4 12/1/20 5.4
11/29/18 3.3 12/3/19 3.0 12/2/20 3.4
12/4/18 4.3 12J4/19 6.9 12/3/20 7.0
12/5/18 2.2 12/5/19 4.2 12/8/20 4.9
12/7/18 5.4 12/10/19 3.9 12/9/20 5.1
12/11/18 15.6 12/11/19 2.7 12/10/20 2.0
12/12/18 4.9 12/12/19 2.0 12/15/20 5.5
12/13/18 15.0 12/17/19 9.1 12/16/20 5.7
12/18/18 5.2 12/18/19 2.7 12/17/20 5.3
12/19/18 9.0 12/19/19 2.5 12/21/20 10.8
12/20/18 3.9 12/23/19 7.9 12/22/20 7.4
12/26/18 5.7 12/24/19 9.1 12/23/20 6.5
12/27/18 5.4 12/26/19 5.1 12/29/20 7.4
12/28/18 16.1 12/30/19 9.9 12/30/20 5.2
12/31/18 4.2 12/31/19 6.1 12/31/20 13.8
Arithmatie Mean 5.09 mg/L
Monthly Average Limit 30.0 mg/L
Target (1/2 Monthly Average Limit) 15.0 mg/L
Samples over 200% Monthly Average Limit 0

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
❑ CHECK IF HQW OR ORW WQS
Maggie Valley WWTP
III
NC0056561
001
1.000
Jonathans Creek
06010106
C;Tr
❑ Apply WS Hardness WQC
7Q10s (cfs)
7Q1Ow (cfs)
30Q2 (cfs)
QA (cfs)
23.000
27.00
38.00
110.00
1 Q10s (cfs)
18.97
Effluent Hardness
Upstream Hardness
Combined Hardness Chronic
Combined Hardness Acute
42.53 mg/L (Avg)
27.31 mg/L (Avg)
28.27 mg/L
28.46 mg/L
Data Source(s)
❑ CHECK TO APPLY MODEL
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Par23
Par24
Name
WQS
Type Chronic Modifier
Acute
PQL Units
Arsenic
Aquactic Life
C
150
FW
340
ug/L
Arsenic
Human Health
Water Supply
C
10
HH/WS
N/A
ug/L
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
0.6473
FW
3.6275
ug/L
Chlorides
Aquatic Life
NC
230
FW
mg/L
Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
yTotal Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium III
Aquatic Life
NC
130.1938
FW
1006.3486
ug/L
Chromium VI
Aquatic Life
NC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
pg/L
Copper
Aquatic Life
NC
8.7528
FW
11.8309
ug/L
Cyanide
Aquatic Life
NC
5
FW
22
10
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Lead
Aquatic Life
NC
3.3776
FW
87.3242
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
--11
Molybdenum
Human Health
NC
2000
HH
ug/L
Nickel
Aquatic Life
NC
41.3088
FW
374.0196
pg/L
Nickel
Water Supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
0.3703
ug/L
Zinc
Aquatic Life
NC
140.6355
FW
140.2832
ug/L
56561 RPA, input
6/16/2021

REASONABLE POTENTIAL ANALYSIS
H1
Effluent Hardness
Date Data BDL=1/2DL Results
1 10/10/2017 10 10 Std Dev.
2 2/20/2018 36 36 Mean
3 4/10/2018 20 20 C.V.
4 7/10/2018 30 30 n
5 10/9/2018 24 24 10th Per value
6 1/15/2019 30 30 Average Value
7 4/3/2019 < 5 2.5 Max. Value
8 7/9/2019 59 59
9 10/8/2019 80 80
10 1/6/2020 40 40
11 4/7/2020 75 75
12 7/7/2020 65 65
13 10/6/2020 70 70
14 1/12/2021 40 40
15 4/13/2021 100 100
16 4/6/2020 12 12
17 12/10/2019 36 36
18 3/12/2019 36 36
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL -
Values" then "COPY"
. Maximum data
points = 58
H2
Upstream Hardness
26.7782
42.5278
0.6297
18
11.40 mg/L
42.53 mg/L
100.00 mg/L
Date Data BDL=1/2DL Results
1 10/10/2017 32 32 Std Dev.
2 2/20/2018 10 10 Mean
3 4/10/2018 6.1 6.1 C.V.
4 7/10/2018 12 12 n
5 10/9/2018 26 26 10th Per value
6 1/15/2019 30 30 Average Value
7 4/3/2019 < 5 2.5 Max. Value
8 7/9/2019 61 61
9 10/8/2019 14 14
10 1/6/2020 38 38
11 4/7/2020 10 10
12 7/7/2020 16 16
13 10/6/2020 12 12
14 1/12/2021 40 40
15 4/13/2021 100 100
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
25.5841
27.3067
0.9369
15
7.66 mg/L
27.31 mg/L
100.00 mg/L
56561 RPA, data
- 1 - 6/16/2021

REASONABLE POTENTIAL ANALYSIS
Par01 & Par02
Arsenic
Date Data BDL=1/2DL Results
1 3/12/2019 < 10 5 Std Dev. 0.0000
2 12/10/2019 < 10 5 Mean 5.0000
3 4/6/2020 < 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
56561 RPA, data
- 2 - 6/16/2021

REASONABLE POTENTIAL ANALYSIS
Par03
Beryllium
Date Data BDL=1/2DL Results
1 3/12/2019 < 1 0.5 Std Dev.
2 12/10/2019 < 1 0.5 Mean
3 4/6/2020 < 1 0.5 C.V. (default)
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
0.0000
0.5000
0.6000
3
3.00
0.50 ug/L
1.50 ug/L
Par04
Cadmium
Date Data BDL=1/2DL Results
1 3/12/2019 < 1 0.5 Std Dev.
2 12/10/2019 < 1 0.5 Mean
3 4/6/2020 < 1 0.5 C.V. (default)
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
0.0000
0.5000
0.6000
3
3.00
0.500 ug/L
1.500 ug/L
56561 RPA, data
- 3 - 6/16/2021

REASONABLE POTENTIAL ANALYSIS
Par07
Total Phenolic Compounds
Date Data BDL=1/2DL Results
1 3/12/2019 < 5 2.5 Std Dev.
2 12/10/2019 < 5 2.5 Mean
3 4/6/2020 < 5 2.5 C.V. (default)
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
0.0000
2.5000
0.6000
3
3.00
2.5 ug/L
7.5 ug/L
Par10
Chromium, Total
Date Data BDL=1/2DL Results
1 3/12/2019 < 5 2.5 Std Dev.
2 12/10/2019 < 5 2.5 Mean
3 4/6/2020 < 5 2.5 C.V. (default)
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
0.0000
2.5000
0.6000
3
3.00
2.5 pg/L
7.5 pg/L
56561 RPA, data
- 4 - 6/16/2021

REASONABLE POTENTIAL ANALYSIS
Pall
Copper
Date Data BDL=1/2DL Results
1 3/12/2019 5 5 Std Dev.
2 12/10/2019 8 8 Mean
3 4/6/2020 8 8 C.V. (default)
4 4/11/2017 4 4 n
5 7/18/2017 5 5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
1.8708
6.0000
0.6000
5
2.32
8.00 ug/L
18.56 ug/L
Par12
Cyanide
Date Data BDL=1/2DL Results
1 3/12/2019 < 5 5 Std Dev.
2 12/10/2019 < 5 5 Mean
3 4/6/2020 < 5 5 C.V. (default)
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
0.0000
5.00
0.6000
3
3.00
5.0 ug/L
15.0 ug/L
56561 RPA, data
- 5 - 6/16/2021

REASONABLE POTENTIAL ANALYSIS
Par14
Lead
Date
3/12/2019 <
12/10/2019 <
4/6/2020 <
5
5
5
BDL=1/2DL
2.5
2.5
2.5
Results
Std Dev.
Mean
C.V. (default)
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
0.0000
2.5000
0.6000
3
3.00
2.500 ug/L
7.500 ug/L
Par17 & Par18
Nickel
Date Data
3/12/2019 <
12/10/2019 <
4/6/2020 <
10
10
10
BDL=1/2DL
5
5
5
Results
Std Dev.
Mean
C.V. (default)
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SF
Values" then "I
. Maximum
points = 5
0.0000
5.0000
0.6000
3
3.00
5.0
15.0
56561 RPA, data
- 6 - 6/16/2021

REASONABLE POTENTIAL ANALYSIS
)ECIAL
COPY"
iata
18
Par19
Selenium
1
2
3
4
5
6
pg/L 7
pg/L 8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Date Data
3/12/2019 <
12/10/2019 <
4/6/2020 <
10
10
10
BDL=1/2DL
5
5
5
Results
Std Dev.
Mean
C.V. (default)
n
Mult Factor =
Max. Value
Max. Pred Cw
Use"PASTE
SPECIAL -Values
then "COPY" .
Maximum data
points = 58
Par20
Silver
0.0000
5.0000
0.6000
3
3.00
5.0 ug/L
15.0 ug/L
Date Data
3/12/2019
12/10/2019
4/6/2020
4/11/2017
7/18/2017
10/10/2017
2/20/2018
5/22/2018
7/10/2018
10/9/2018
1 /15/2019
4/3/2019
7/9/2019
10/8/2019
1/6/2020
4/7/2020
7/7/2020
10/6/2020
1 /12/2021
4/13/2021
1
1
1
5
5
3
5
1
1
1
1
1
1
1
1
1
1
1
1
1
BDL=1/2DL
0.5
0.5
0.5
2.5
2.5
1.5
2.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1
0.5
0.5
0.5
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
0.7412
0.8750
0.8471
20
1.51
2.500 ug/L
3.775 ug/L
-7-
56561 RPA, data
6/16/2021

REASONABLE POTENTIAL ANALYSIS
Par21
Zinc
Date Data BDL=1/2DL Results
1 3/12/2019 29 29 Std Dev.
2 12/10/2019 71 71 Mean
3 4/6/2020 68 68 C.V. (default)
4 4/11/2017 26 26 n
5 7/18/2017 54 54
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
21.1967
49.6000
0.6000
5
2.32
71.0 ug/L
164.7 ug/L
56561 RPA, data
- 8 - 6/16/2021

Maggie Valley WWTP
NC0056561
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw (MGD) = 1.0000
1Q1OS (cfs) = 18.97
7Q1OS (cfs) = 23.00
7Q1OW (cfs) = 27.00
30Q2 (cfs) = 38.00
Avg. Stream Flow, QA (cfs) = 110.00
Receiving Stream: Jonathans Creek HUC 06010106
WWTP/WTP Class: III
IWC% @ 1Q1OS = 7.553606238
IWC% @ 7Q105= 6.313645621
IWC% @ 7Q1OW = 5.429071804
IWC% @ 30Q2 = 3.91908976
IW%C @ QA = 1.38951143
Stream Class: C;Tr
Outfall 001
Qw= 1 MGD
COMBINED HARDNESS (mg/L)
Acute = 28.46 mg/L
Chronic = 28.27 mg/L
PARAMETER
TYPE
NC STANDARDS OR EPA CRITERIA
_1
m
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
Chronic Standa d Acute
n # Det. Max Pred Cw Allowable Cw
Arsenic
Arsenic
C
C
150 FW(7Q10s) 340
10 EIH/WS(Qavg)
ug/L
ug/L
3---
0
Note: n < 9
Limited data set
15.0
C.V. (default)
NO DETECTS
Acute (FW): 4,501.2
__ _ _ _ _ -------------------------------
Chronic (FW):2,375.8
Max MDL = 10 ______________________________________
Chronic (HH): 719.7
Max MDL = 10
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Beryllium
NC
6.5 FW(7Q10s) 65
ug/L
3 0
Note: n < 9
Limited data set
1.50
C.V. (default)
NO DETECTS
Acute: 860.52
_ _ _ _ _ _ _ _ _ _ _ _ _
Chronic: 102.95
Max MDL = 1
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Cadmium
NC
0.6473 FW(7Q10s) 3.6275
ug/L
3 0
Note: n < 9
Limited data set
1.500
C.V. (default)
NO DETECTS
Acute: 48.023
Chronic: 10.253
Max MDL = 1
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
3 0
Note: n < 9
Limited data set
7.5
C.V. (default)
NO DETECTS
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _ _
Chronic: 7,654.8
Max MDL = 5
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Chromium III
NC
130.1938 FW(7Q10s) 1006.3486
µg/L
0 0
N/A
Acute: 13,322.8
--_ _ ---_ _
-Chronic:-2-------------------------------
,062.1
Chromium VI
NC
11 FW(7Q10s) 16
µg/L
0 0
N/A
Acute: 211.8
--_ _ ----_ _
--174.2--------------------------------
Chronic:
Chromium, Total
NC
µg/L
3 0
Nate! n < 9
Limited data set
7.5
(: V _ (default)
NO DETECTS
Max reported value = 2.5
Max MDL = 5
a: No monitoring required if all Total Chromium
samples are < 5 pg/L or Pred. max for Total Cr is <
allowable Cw for Cr VI.
Copper
NC
8.7528 FW(7Q10s) 11.8309
ug/L
5 5
Note: n < 9
Limited data set
18.56
C.V. (default)
Acute: 156.63
____ _ ____ _ _ _______________________________
Chronic: 138.63
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Cyanide
NC
5 FW(7Q10s) 22
10
ug/L
3 0
Note: n < 9
Limited data set
15.0
C.V. (default)
NO DETECTS
Acute: 291.3
Chronic: 79.2
Max MDL = 10
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Page 1 of 2
56561 RPA, rpa
7/22/2021

Maggie Valley WWTP
NC0056561
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
Outfall 001
Qw= 1 MGD
Lead
NC
3.3776 FW(7Q10s) 87.3242
ug/L
3 0
Note: n < 9
Limited data set
7.500
C.V. (default)
NO DETECTS
Acute: 1,156.059
_ _ _ _ _ _ _ _ _ _ _
Chronic: 53.496
Max MDL = 5
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Acute (FW): 4,951.5
Nickel
NC
41.3088 FW(7Q10s) 374.0196
µg/L
_ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _
3 0
15.0
Chronic (FW): 654.3
No RP, Predicted Max < 50% of Allowable Cw - No
Note: n < 9
C.V. (default)
Max MDL = 10
Monitoring required
Nickel
NC
25.0000 WS(7Q10s)
µg/L
Limited data set
NO DETECTS
Chronic (WS): 396.0
Max MDL = 10
Acute: 741.4
Selenium
NC
5 FW(7Q10s) 56
ug/L
3 0
15.0
___ _ ______ ____
___________________________
Note: n < 9
C.V. (default)
Chronic: 79.2
No RP, Predicted Max < 50% of Allowable Cw - No
Limited data set
NO DETECTS
Max MDL = 10
Monitoring required
Acute: 4.903
Silver
NC
0.06 FW(7Q10s) 0.3703
ug/L
20 1
3.775
Chronic: 0.950
5 value(s) > Allowable Cw
BPJ; increase monitoring to monthly without addition
of limit. One detection @ detection level (1 ug/L) -
collect additional samples
Acute: 1,857.2
No RP, Predicted Max < 50% of Allowable Cw - No
Zinc
NC
140.6355 FW(7Q10s) 140.2832
ug/L
5 5
164.7
Monitoring required
Note: n < 9
C.V. (default)
Chronic: 2,227.5
Limited data set
No value > Allowable Cw
Page 2 of 2
56561 RPA, rpa
7/22/2021

Permit No. NC0056561
NPDES Implementation of Instream Dissolved Metals Standards - Freshwater Standards
The NC 2007-2015 Water Quality Standard (WQS) Triennial Review was approved by the NC
Environmental Management Commission (EMC) on November 13, 2014. The US EPA subsequently
approved the WQS revisions on April 6, 2016, with some exceptions. Therefore, metal limits in draft
permits out to public notice after April 6, 2016 must be calculated to protect the new standards - as
approved.
Table 1. NC Dissolved Metals Water Quality Standards/Aquatic Life Protection
Parameter
Acute FW, µg/1
(Dissolved)
Chronic FW, µg/1
(Dissolved)
Acute SW, µg/1
(Dissolved)
Chronic SW, µg/1
(Dissolved)
Arsenic
340
150
69
36
Beryllium
65
6.5
---
---
Cadmium
Calculation
Calculation
40
8.8
Chromium III
Calculation
Calculation
---
---
Chromium VI
16
11
1100
50
Copper
Calculation
Calculation
4.8
3.1
Lead
Calculation
Calculation
210
8.1
Nickel
Calculation
Calculation
74
8.2
Silver
Calculation
0.06
1.9
0.1
Zinc
Calculation
Calculation
90
81
Table 1 Notes:
1. FW= Freshwater, SW= Saltwater
2. Calculation = Hardness dependent standard
3. Only the aquatic life standards listed above are expressed in dissolved form. Aquatic life
standards for Mercury and selenium are still expressed as Total Recoverable Metals due to
bioaccumulative concerns (as are all human health standards for all metals). It is still necessary
to evaluate total recoverable aquatic life and human health standards listed in 15A NCAC
2B.0200 (e.g., arsenic at 10 µg/1 for human health protection; cyanide at 5 µg/L and fluoride at
1.8 mg/L for aquatic life protection).
Table 2. Dissolved Freshwater Standards for Hardness -Dependent Metals
The Water Effects Ratio (WER) is equal to one unless determined otherwise under 15A
NCAC 02B .0211 Subparagraph (11)(d)
Metal
NC Dissolved Standard, µg/I
Cadmium, Acute
WER*{1.136672-[ln hardness](0.041838)} • e^{0.9151 [In hardness]-3.1485}
Cadmium, Acute Trout waters
WER*{1.136672-[ln hardness](0.041838)} • e^{0.9151[In hardness]-3.6236}
Cadmium, Chronic
WER*{1.101672-[ln hardness](0.041838)} • e^{0.7998[ln hardness]-4.4451}
Chromium III, Acute
WER*0.316 • e^{0.8190[1n 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[In 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}
Page 1 of 4

Permit No. NC0056561
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.
Page 2 of 4

Permit No. NC0056561
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.
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] [Ssl1+a)] [10 6] }
Where:
ss = in -stream suspended solids concentration [mg/1], minimum of 10 mg/L used,
and
Kpo and a = constants that express the equilibrium relationship between dissolved
and adsorbed forms of metals. A list of constants used for each hardness -dependent
metal can also be found in the RPA program under a sheet labeled DPCs.
4. The numeric standard for each metal of concern is divided by the default partition coefficient (or
site -specific translator) to obtain a Total Recoverable Metal at ambient conditions.
In some cases, where an EPA default partition coefficient translator does not exist (ie. silver), the
dissolved numeric standard for each metal of concern is divided by the EPA conversion factor to
obtain a Total Recoverable Metal at ambient conditions. This method presumes that the metal is
dissolved to the same extent as it was during EPA's criteria development for metals. For more
information on conversion factors see the June, 1996 EPA Translator Guidance Document.
5. The RPA spreadsheet uses a mass balance equation to determine the total allowable concentration
(permit limits) for each pollutant using the following equation:
Ca = (s7Q10 + Qw) (Cwqs) — (s7Q10) (Cb)
Qw
Where: Ca = allowable effluent concentration (µg/L or mg/L)
Cwqs = NC Water Quality Standard or federal criteria (µg/L or mg/L)
Cb = background concentration: assume zero for all toxicants except NH3* (µg/L or mg/L)
Qw = permitted effluent flow (cfs, match s7Q10)
s7Q 10 = summer low flow used to protect aquatic life from chronic toxicity and human
health through the consumption of water, fish, and shellfish from noncarcinogens (cfs)
* Discussions are on -going with EPA on how best to address background concentrations
Flows other than s7Q 10 may be incorporated as applicable:
1Q10 = used in the equation to protect aquatic life from acute toxicity
Page 3 of 4

Permit No. NC0056561
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)]
42.53
Based on DMR values
Average Upstream Hardness (mg/L)
[Total as, CaCO3 or (Ca+Mg)]
27.31
Based on DMR values
7Q10 summer (cfs)
23.0
NPDES Files
1Q10 (cfs)
18.97
Calculated in RPA
Permitted Flow (MGD)
1.0
NPDES Files
Date: 6/16/2021
Permit Writer: Nick Coco
Page 4 of 4

NC0056561 Maggie Valley WWTP 6/16/2021
BOD monthly removal rate
Month RR (%) Month RR (%)
April-17
May-17
June-17
July-17
August-17
September-17
October-17
November-17
December-17
January-18
February-18
March-18
April-18
May-18
June-18
July-18
August-18
September-18
October-18
November-18
December-18
January-19
February-19
March-19
April-19
May-19
June-19
July-19
August-19
September-19
96.99
97.50
98.70
97.75
99.08
98.72
98.18
97.76
97.82
96.85
96.04
96.21
95.48
98.29
99.08
98.56
99.05
98.28
98.53
98.36
96.23
96.33
97.83
97.12
97.91
97.67
98.78
98.55
98.28
97.16
October-19
November-19
December-19
January-20
February-20
March-20
April-20
May-20
June-20
July-20
August-20
September-20
October-20
November-20
December-20
January-21
February-21
March-21
April-21
May-21
June-21
July-21
August-21
September-21
October-21
November-21
December-21
January-22
February-22
March-22
Overall BOD removal rate
98.40
97.27
97.25
97.05
97.39
98.88
98.64
98.12
97.37
99.18
99.01
99.08
98.03
98.99
98.08
98.67
97.17
98.64
98.89
97.94
TSS monthly removal rate
Month RR (%) Month RR (%)
April-17
May-17
June-17
July-17
August-17
September-17
October-17
November-17
December-17
January-18
February-18
March-18
April-18
May-18
June-18
July-18
August-18
September-18
October-18
November-18
December-18
January-19
February-19
March-19
April-19
May-19
June-19
July-19
August-19
September-19
95.86
96.02
98.39
98.38
99.14
98.69
98.05
96.46
94.36
91.30
94.51
95.06
95.88
97.15
98.93
98.85
99.02
98.79
99.21
97.76
93.97
94.40
95.23
94.38
96.43
97.92
99.43
99.20
99.32
99.50
October-19
November-19
December-19
January-20
February-20
March-20
April-20
May-20
June-20
July-20
August-20
September-20
October-20
November-20
December-20
January-21
February-21
March-21
April-21
May-21
June-21
July-21
August-21
September-21
October-21
November-21
December-21
January-22
February-22
March-22
Overall TSSD removal rate
98.07
97.61
98.00
94.33
96.88
98.89
98.34
98.26
99.15
99.24
99.03
98.99
98.03
98.65
97.66
98.13
98.04
98.86
99.03
97.49

NH3/TRC WLA Calculations
Facility: Maggie Valley WWTP
PermitNo. NC0056561
Prepared By: Nick Coco
Enter Design Flow (MGD):
Enter s7Q10 (cfs):
Enter w7Q10 (cfs):
1
23
27
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/I)
s7Q10 (CFS)
DESIGN FLOW (MGD) 1
DESIGN FLOW (CFS) 1.55
STREAM STD (UG/L) 17.0
Upstream Bkgd (ug/I) 0
IWC (%) 6.31
Allowable Conc. (ug/l) 269
Cap at 28 ug/L. Same as current limit.
Limit maintained.
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
23
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
23
1
1.55
1.0
0.22
6.31
12.6
More stringent than current. Add limit.
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
w7Q10 (CFS) 27
200/100m1 DESIGN FLOW (MGD) 1
DESIGN FLOW (CFS) 1.55
STREAM STD (MG/L) 1.8
15.84 Upstream Bkgd (mg/I) 0.22
IWC (%) 5.43
Allowable Conc. (mg/I) 29.3
Year-round limits. Apply summer limits.
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals)
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)

6/3/21 WQS = 12 ng/L
Facility Name Maggie Valley WWTP/NC0056561
/Permit No. :
MERCURY WQBEL/TBEL EVALUATION V:2013-6
Total Mercury 1631E PQL = 0.5 ng/L 7Q10s =
Date Modifier Data Entry Value Permitted Flow =
3/12/19 2.71
12/10/19 1.83
4/6/20 2.38
2.71
1.83
2.38
No Limit Required
No MMP Required
23.000
1.000
cfs
WQBEL = 190.06 ng/L
47 ng/L
2.3 ng/L - Annual Average for 2019
2.4 ng/L - Annual Average for 2020

Maggie Valley WWTP/NC0056561
Mercury Data Statistics (Method 1631E)
2019
2020
# of Samples
2
1
Annual Average, ng/L
2.3
2.4
Maximum Value, ng/L
2.71
2.38
TBEL, ng/L
47
WQBEL, ng/L
190.1

Earth
Environmental
Services
Iurphy, NC
Name and Address of Iac lity
Town of Maggie Valley
3987 Soco Road
Maggie Valley, NC 871
Att; Mike Mehaffey
Earth Environmental
75 Bison Lane
Murphy, NC 28906
828-837-9543 (office)
828-644-4835 (lab)
Lab ID# 352
Report Date 6/9/2021
Date and Time Received 71712020 10:25 AM
Date and Time Sampled 7/7/2020 Effluent 8:00 AM Upstream 7:50 AM
Sampler MIKE MEHAFFEY
AMENDED REPORT FOR J-FLAG ON SILVER F04 7/7/2020
Test
SILVER
TOTAL PHOSPHOROUS
TOTAL NITROGEN
HARDNESS
Effluent Sample Time Report Limit
1
8:00
2.1
.98
65
8:00
8:00 AM
8:00 AM
0.5
0.050
0.500
Units
ug/L
mg/L
Date
Method Analyzed Analyst
EPA 2_8 7/15120 I TLT
EPA 200.7 71/20 AND
mg/L
S 500-I O H 7 16/20
5.0
mg/L
SM340 C
7/11/20
LKH
BSC
Test
HARDNESS
Upstream
16
Sample Time Report Limit
7:50 AM
5.0
Lab Supervisor: Wanda G, Ladd; EES - Murphy Certified By:
Units
Date
Method Analyzed Analyst
mg/L I SM2340 C
7/11/20
BSC

Rogers &Ca[Lcott
ENVIRONMENTAL
Environmental Testing Solutions
351 Depot St.
Asheville, NC 28801-4310
Project:
Work Order:
Reported:
Sample Number 0070581-05
Sample Description Earth Environmental Services ft0720061vIVE collected on 07/07/ 08:00
Parameter
Result
General Chemistry Parameters
Nitrate -Nitrite as N
Total Kjeldaht Nitrogen
Total Nitrogen TKI +Nitrate+Nitrite)
Total Phosphorus as P
Total Metals
Silver
PO Box 5655
0610812021 10:23
5.53
1.45
6.98
2.1
Reporting
Limit
0.50
0.10
0.500
0.050
MDL L Units DF Analyzed
0.40
O.i0
0.397
0.023
Earth Environmental Services
0070581
06/08/21 10:23
Method
Flag Analyst Batch
m tL 5.00 07/13/20 '4:46
mgJL 1.00 07/16/20 12:49
m /L 5.00 07/16/20 12:49
► iL 5.00 07/13/20 09:15
Ski 4500No3 -201 i
EPA 351.2
Calculation
SM 4500PE-2011
0.001 0.001 0,0005 mgei 1.00 07/15/20 12:09 EPA 200.8
Greenville, SC 29606 1 426 Fairforest Way Greenville, SC 29607
ELN
LICH
LKC
ANB
B0G0492
B0G0626
[CALCI
BOG0571
TIT F30 i0512
main 8-64.232.1556 fax [phone] rogersandcalicott.com
an employee -owned company
TPage 5 of 12
This report may not be reproduced, except in fill, without written permission from Rogers & aJ1cott, Inc.

Permit No. ,4/2ooji6 (
Outfall 4°- /
Annual Monitoring and Pollutant Scan
Month i"Ikrd k
Year
Facility Name: Town of Maggie Valley WWTP
Date of sampling: 3 / 12 /2019
Analytical Laboratory: Earth Environmental Services; Environmental Testing Solutions; Rogers & Callcott
,e or; alai:
ORC: Mike McHaffey
Phone: [phone]I
Parameter
8 in Ie
p
Type
. ibi
algxtcal
Method
Quaittxtation
Level
S le
p
Result
, .a o
IJruts`af
Measurement
Number of
samples
Ammonia (as N)
Composite
SM4500NH3F
0.1
0.1
mg/1
1
Dissolved oxygen
Composite
SM4500-0 G
0.1
7.2
mg/1
1
Nitrate/Nitrite
Composite
SM4500-NO3F
1.00
5.74
mg/1
1
Total Kjeldahl nitrogen
Composite
351.2
0.10
1.20
mg/1
1
Total Phosphorus
Composite
SM4500-P-F
0.020
1.3
mg/1
1
Total dissolved solids
Composite
SM2540 C
10
144.5
mg/1
1
Hardness
Composite
200.7
5.0
36
mg/1
1
Chlorine (total residual, TRC)
Grab
SM 4500 CL G
0.013
< 0.013
mg/1
1
Oil and grease
Grab
1664A
5.0
ND
mg/1
1
'Metals (total recoverable), cyanide and.total phenol
Antimony
Composite
200.8
5.0
ND
ug/1
1
Arsenic
Composite
200.8
10.0
ND
ug/1
1
Beryllium
Composite
200.8
1.0
ND
ug/1
1
Cadmium
Composite
200.8
1.0
ND
ug/1
1
Chromium
Composite
200.8
5.0
ND
ug/1
1
Copper
Composite
200.8
2.0
5.0
ug/1
1
Lead
Composite
200.8
5,0
ND
ug/1
1
Mercury
Composite
1631 E
0.500
2.71
ng/L
1
Nickel
Composite
200.8
10.0
ND
ug/1
1
Selenium
Composite
200.8
10.0
ND
ug/1
1
Silver
Composite
200.8
1.0
ND
ug/1
1
Thallium
Composite
200.8
0.5
ND
ug/1
1
Zinc
Composite
200.8
10.0
29
ug/1
1
Cyanide
Grab
SM4500 CN-E
0.005
ND
mg/1
1
Total phenolic compounds
Grab
420.1
0.005
ND
mg/1
1
Volatile organic compounds
Acrolein
Grab
624
5.0
ND
ug/1
1
Acrylonitrile
Grab
624
5.0
ND
ug/1
1
Benzene
Grab
624
2.0
ND
ugh 1
1
Bromoform
Grab
624
2.0
ND
ug/1
_
1
Carbon tetrachloride
Grab
624
2.0
ND
ug/1
1
Chlorobenzene
Grab
624
2.0
ND
ug/1
1
Chlorodibromomethane
Grab
624
2.0
ND
ug/1
1
Chloroethane
Grab
624
2.0
ND
ug/1
1
2-chloroethylvinyl ether
Grab
624
5.0
ND
ug/1
1
Chloroform
Grab
624
2.0
4.0
ug/1
1
Dichlorobromomethane
Grab
624
2.0
ND
ug/1
1
1,1-dichloroetha.ne
Grab
624
2.0
ND
ug/1
1
1,2-dichloroethane
Grab
624
2.0
ND
ug/1
1
Trans-1,2-dichloroethylene
Grab
624
2.0
ND
ug/1
1
Form - DMR- PPA-1
Page 1

�1/G� 00 S6S�� Annual Monitoring and Pollutant Scan
Permit No. /
Outfall ' (
Month 476 !�
Year c<ZD /
Parameter
Sample
Type
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
Number of
samples
Volat)le organic compounds {Cant.]
1,1-dichloroethylene
Grab
624
2.0
ND
ug/1
1
1,2-dichloropropane
Grab
624
2.0
ND
ug/1
1
1,3-dichioropropylene
Grab
624
2.0
ND
ug/1
1
Ethylbenzene
Grab
624
2.0
ND
ug/1
1
Methyl bromide
Grab
624
2.0
ND
ug/1
1
Methyl chloride
Grab
624
2.0
ND
ug/1
1
Methylene chloride
Grab
624
2.0
ND
ug/1
1
1,1,2,2-tetrachloroethane
Grab
624
2.0
ND
ug/1
1
Tetrachloroethylene
Grab
624
2.0
ND
ug/1
1
Toluene
Grab
624
2.0
ND
ug/1
1
1,1,1-trichloroethane
Grab
624
2.0
ND
ug/1
1
1,1,2-trichloroethane
Grab
624
2.0
ND
ug/1
1
Trichloroethylene
Grab
624
2.0
ND
ug/1
1
Vinyl chloride
Grab
624
2.0
ND
ug/1
1
Acid -extractable compounds
P-chloro-m-creso
Grab
625
5.0
ND
ug/1
1
2-chlorophenol
Grab
625
5.0
ND
ug/1
1
2,4-dichlorophenol
Grab
625
5.0
ND
ug/1
1
2,4-dimethylphenol
Grab
625
5.0
ND
ug/1
1
4,6-dinitro-o-cresol
Grab
625
5.0
ND
ug/1
1
2,4-dinitrophenol
Grab
625
20.0
ND
ug/1
1
2-nitrophenol
Grab
625
5.0
ND
ug/1
1
4-nitrophenol
Grab
625
5.0
ND
ug/1
1
Pentachlorophenol
Grab
625
10.0
ND
ug/1
1
Phenol
Grab
625
5.0
ND
ug/1
1
2,4,6-trichlorophenol
Grab
625
5.0
ND
ug/1
1
Base -neutral compounds
Acenaphthene
Grab
625
5.0
ND
ug/1
1
Acenaphthylene
Grab
625
5.0
ND
ug/1
1
Anthracene
Grab
625
5.0
ND
ug/1
1
Benzidine
Grab
625
80
ND
ug/1
1
Benzo(a)anthracene
Grab
625
5.0
ND
ug/1
1
Benzo(a)pyrene
Grab
625
5.0
ND
ug/1
1
3,4 benzofluoranthene
Grab
625
5.0
ND
ug/1
1
Benzo(ghi)perylene
Grab
625
5.0
ND
ug/1
1
Benzo(k)fluoranthene
Grab
625
5.0
ND
ug/1
1
Bis (2-chloroethoxy) methane
Grab
625
5.0
ND
ug/1
1
Bis (2-chloroethyl) ether
Grab
625
5.0
ND
ug/1
1
Bis (2-chloroisopropyl) ether
Grab
625
5.0
ND
ug/1
1
Bis (2-ethylhexyl) phthalate
Grab
625
5.0
ND
ug/1
1
4-bromophenyl phenyl ether
Grab
625
5.0
ND
ug/1
1
Butyl benzyl phthalate
Grab
625
5.0
ND
ug/1
1
2-chloronaphthalene
Grab
625
5.0
ND
ug/1
1
Form - DMR- PPA-1
Page 2

Permit No. /1ICD3'4 (
Outfall # /
Annual Monitoring and Pollutant Scan
Month %/ -
Year gel(
4-chlorophenyl phenyl ether
Grab
625
5.0
ND
ug/1
1
Parameter
Sample
Type
Allitilyti6id
Method
QiiantitatiOn
Level
Sample
Result
Units -Of
Measurement
Number of
samples
Base -neutral compounds (cunt.)
Chrysene
Grab
625
5.0
ND
ug/1
1
Di-n-butyl phthalate
Grab
625
5.0
ND
ug/1
1
Di-n-octyl phthalate
Grab
625
5.0
ND
ug/1
1
Dibenzo(a,h)anthracene
Grab
625
5.0
ND
ug/1
1
1,2-dichlorobenzene
Grab
625
2.0
ND
ug/1
1
1,3-dichlorobenzene
Grab
625
2.0
ND
ug/1
1
1,4-dichlorobenzene
Grab
625
2.0
ND
ug/1
1
3,3-dichlorobenzidine
Grab
625
5.0
ND
ug/1
1
Diethyl phthalate
Grab
625
5.0
ND
ug/1
1
Dimethyl phthalate
Grab
625
5.0
ND
ug/1
1
2,4-dinitrotoluene
Grab
625
5.0
ND
ug/1
1
2,6-dinitrotoluene
Grab
625
5.0
ND
ug/1
1
1,2-diphenylhydrazine
Grab
625
5.0
ND
ug/1
1
Fluoranthene
Grab
625
5.0
ND
ugh
1
Fluorene
Grab
625
5.0
ND
ug/1
1
Hexachlorobenzene
Grab
625
5.0
ND
ug/1
1
Hexachlorobutadiene
Grab
625
5.0
ND
ug/1
1
Hexachlorocyclo-pentadiene
Grab
625
5.0 -
ND
ug/1
1
Hexachloroethane
Grab
625
5.0
ND
ug/1
1
Indeno(1,2,3-cd)pyrene
Grab
625
5.0
ND
ug/1
1
Isophorone
Grab
625
5.0
ND
ug/1
1
Naphthalene
Grab
625
5.0
ND
ug/1
1
Nitrobenzene
Grab
625
5.0
ND
ug/1
1
N-nitrosodi-n-propylamine
Grab
625
5.0
ND
ug/1
1
N-nitrosodimethylamine
Grab
625
5.0
ND
ug/1
1
N-nitrosodiphenylamine
Grab
625
5.0
ND
ug/1
1
Phenanthrene
Grab
625
5.0
ND
ug/1
1
Pyrene
Grab
625
5.0
ND
ug/1
1
1,2,4,-trichlorobenzene
Grab
625
2.0
ND
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.
/V!' l!>--7
Authorized Representative name
Si: - ture
Q1441/. j .
Form - DMR- PPA-1
Page 3

�Annual Monitoring and Pollutant Scan
Permit No. 4.1 Oc 2J '5 a(
Outfall %
Month D Year alory
Facility Name: Town of Maggie Valley WWTP ORC: Mike Mehaffey
Date of sampling: 12/10/2019 Phone: [phone]
Analytical Laboratory: Earth Environmental Services; Environmental Testing Solutions; Rogers & Callcott
parameter
Sample
Type
i 1yti-Al
Method
Q
QUEintitatton
Level
Sample
Result
Units of
Measurement
Nunkbe of
samples
Ammonia (as N)
Composite
SM4500NH3F
0.1
0.2
mg/1
1
Dissolved oxygen
Composite
SM4500-0 G
0.1
5.96
mg/1
1
Nitrate/Nitrite
Composite
SM4500-NO3F
1.00
9.57
mg/1
1
Total Kjeldahl nitrogen
Composite
351.2
1.00
ND
mg/1
1
Total Phosphorus
Composite
SM4500-P-F
0.020
2.6
mg/1
1
Total dissolved solids
Composite
SM2540 C
20
170
mg/1
1
Hardness
Composite
200.7
5.0
36
mg/1
1
Chlorine (total residual, TRC)
Grab
SM 4500 CL G
0.013
ND
mg/1
1
Oil and grease
Grab
1664A
5.0
ND
mg/1
1
Metals (total recoverable), cyanide and total phenols
Antimony
Composite
200.8
5.0
ND
ug/1
1
Arsenic
Composite
200.8
10.0
ND
ug/1
1
Beryllium
Composite
200.8
1.0
ND
ug/1
1
Cadmium
Composite
200.8
1.0
ND
ug/1
1
Chromium
Composite
200.8
5.0
ND
ug/1
1
Copper
Composite
200.8
2.0
8.0
ug/1
1
Lead
Composite
200.8
5.0
ND
ug/1
1
Mercury
Composite
1631 E
0.500
1.83
ng/L
1
Nickel
Composite
200.8
10.0
ND
ug/1
1
Selenium
Composite
200.8
10.0
ND
ug/1
1
Silver
Composite
200.8
1.0
ND
ug/1
1
Thallium
Composite
200.8
0.5
ND
ug/1
1
Zinc
Composite
200.8
10.0
71
ug/1
1
Cyanide
Grab
SM4500 CN-E
0.005
ND
mg/1
1
Total phenolic compounds
Grab
420.1
0.005
ND
mg/1
1
Volatile organic compounds
Acrolein
Grab
624
10.0
ND
ug/1
1
Acrylonitrile
Grab
624
10.0
ND
ug/1
1
Benzene
Grab
624
4.0
ND
ug/1
1
Bromoform
Grab
624
4.0
ND
ug/1
1
Carbon tetrachloride
Grab
624
4.0
ND
ug/1
1
Chlorobenzene
Grab
624
4.0
ND
ug/1
1
Chlorodibromomethane
Grab
624
4.0
ND
ug/1
1
Chioroethane
Grab
624
4.0
ND
ug/1
1
2-chloroethylvinyl ether
Grab
624
10.0
ND
ug/1
1
Chloroform
Grab
624
4.0
ND
ug/1
1
Dichlorobromomethane
Grab
624
4.0
ND
ug/1
1
1,1-dichloroethane
Grab
624
4.0
ND
ug/1
1
1,2-dichloroethane
Grab
624
4.0
ND
ug/1
1
Trans-1,2-dichloroethylene
Grab
624
4.0
ND
ug/1
1
Form - DMR- PPA-1
Page 1

Permit No. -41C40515
Outfall /
Annual Monitoring and Pollutant Scan
Month Ile.
Year OD/ r
Parameter
Sample
Type
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
Number of
samples
Volatile organic compounds (Cont,)
1,1-dichloroethylene
Grab
624
4.0
ND
ug/1
1
1,2-dichloropropane
Grab
624
4.0
ND
ug/1
1
1,3-dichloropropylene
Grab
624
2.0
ND .
ug/1
1
Ethylbenzene
Grab
624
4.0
ND
ug/1
1
Methyl bromide
Grab
624
4.0
ND
ug/1
1
Methyl chloride
Grab
624
4.0
ND
ugh 1
1
Methylene chloride
Grab
624
4.0
ND
ug/1
1
1,1,2,2-tetrachloroethane
Grab
624
4.0
ND
ug/1
1
Tetrachloroethylene
Grab
624
4.0
ND
ug/1
1
Toluene
Grab
624
4.0
ND
ug/1
1
1,1,1-trichloroethane
Grab
624
4.0
ND
ug/1
1
1,1,2-trichloroethane
Grab
624
4.0
ND
ug/1
1
Trichloroethylene
Grab
624
4.0
ND
ug/1
1
Vinyl chloride
Grab
624
4.0
ND
ug/1
1
;Acid -extractable compounds
P-chloro-m-creso
Grab
625
5.0
ND
ug/1
1
2-chlorophenol
Grab
625
5.0
ND
ug/1
1
2,4-dichlorophenol
Grab
625
5.0
ND
ug/1
1
2,4-dimethylphenol
Grab
625
5.0
ND
ug/1
1
4,6-dinitro-o-cresol
Grab
625
5.0
ND
ug/1
1
2,4-dinitrophenol
Grab
625
10.0
ND
ug/1
1
2-nitrophenol
Grab
625
5.0
ND
ug/1
1
4-nitrophenol
Grab
625
5.0
ND
ug/1
1
Pentachlorophenol
Grab
625
5.0
ND
ug/1
1
Phenol
Grab
625
5.0
ND
ug/1
1
2,4,6-trichlorophenol
Grab
625
5.0
ND
ug/1
1
Base -neutral compounds
Acenaphthene
Grab
625
5.0
ND
ug/1
1
Acenaphthylene
Grab
625
5.0
ND
ug/1
1
Anthracene
Grab
625
5.0
ND
ug/1
1
Benzidine
Grab
625
80
ND
ug/1
1
Benzo(a)anthracene
Grab
625
5.0
ND
ug/1
1
Benzo(a)pyrene
Grab
625
5.0
ND
ug/1
1
3,4 benzofluoranthene
Grab
625
5.0
ND
ug/1
1
Benzo(ghi)perylene
Grab
625
5.0
ND
ug/1
1
Benzo(k)fluoranthene
Grab
625
5.0
ND
ug/1
1
Bis (2-chloroethoxy) methane
Grab
625
5.0
ND
ug/1
1
Bis (2-chloroethyl) ether
Grab
625
5.0
ND
ug/1
1
Bis (2-chloroisopropyl) ether
Grab
625
5.0
ND
ug/1
1
Bis (2-ethylhexyl) phthalate
Grab
625
10.0
ND
ug/1
1
4-bromophenyl phenyl ether
Grab
625
5.0
ND
ug/1
1
Butyl benzyl phthalate
Grab
625
5.0
ND
ug/1
1
2-chloronaphthalene
Grab
625
5.0
ND
ug/1
1
Form - DMR- PPA-1
Page 2

Permit No. Ale de 510 I
Outfall t
Annual Monitoring and Pollutant Scan
Month �-�G--
Year o2D /q
4-chlorophenyl phenyl ether
Grab
625
5.0
ND
ug/1
1
Parameter
Sample
Type
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
Number of
samples
Base -neutral compounds (cont.)
Chrysene
Grab
625
5.0
ND
ug/1
1
Di-n-butyl phthalate
Grab
625
5.0
ND
ug/1
1
Di-n-octyl phthalate
Grab
625
5.0
ND
ug/1
1
Dibenzo(a,h)anthracene
Grab
625
5.0
ND
ug/1
1
1,2-dichlorobenzene
Grab
625
4.0
ND
ug/1
1
1,3-dichlorobenzene
Grab
625
4.0
ND
ug/1
1
1,4-dichlorobenzene
Grab
625
4.0
ND
ug/1
1
3,3-dichlorobenzidine
Grab
625
5.0
ND
ug/1
1
Diethyl phthalate
Grab
625
5.0
ND
ug/1
1
Dimethyl phthalate
Grab
625
5.0
ND
ug/1
1
2,4-dinitrotoluene
Grab
625
5.0
ND
ug/1
1
2,6-dinitrotoluene
Grab
625
5.0
ND
ug/1
1
1,2-diphenylhydrazine
Grab
625
5.0
ND
ug/1
1
Fluoranthene
Grab
625
5.0
ND
ug/1
1
Fluorene
Grab
625
5.0
ND
ug/1
1
Hexachlorobenzene
Grab
625
5.0
ND
ug/1
1
Hexachlorobutadiene
Grab
625
5.0
ND
ug/1
1
Hexachlorocyclo-pentadiene
Grab
625
5.0
ND
ug/1
1
Hexachloroethane
Grab
625
5.0
ND
ug/1
1
Indeno(1,2,3-cd)pyrene
Grab
625
5.0
ND
ug/1
1
Isophorone
Grab
625
5.0
ND
ug/1
1
Naphthalene
Grab
625
5.0
ND
ug/1
1
Nitrobenzene
Grab
625
5.0
ND
ug/1
1
N-nitrosodi-n-propylamine
Grab
625
5.0
ND
ug/1
1
N-nitrosodimethylamine
Grab
625
5.0
ND
ug/1
1
N-nitrosodiphenylamine
Grab
625
5.0
ND
ug/1
1
Phenanthrene
Grab
625
5.0
ND
ug/1
1
Pyrene
Grab
625
5.0
ND
ug/1
1
1,2,4,-trichlorobenzene
Grab
625
2.0
ND
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.
4.‘"? (...411(
Authorized Representative name
ature
1 Zl2v2o
Date
Form - DMR- PPA-1
Page 3

Permit No. .Nb DDf 7 (
Outfall
Annual Monitoring and Pollutant Scan
Month
Year
Facility Name: Town of Maggie Valley WWTP
Date of sampling: 4/6/2020
Analytical Laboratory: Earth Environmental Services; Environmental Testing Solutions; Rogers & Callcott
ORC: Mike Mehaffey
Phone: [phone]
Parameter
Sample
Type
Analytical
Method
Qua ntitation
Level
Sample
Result
Units of
Measurement
Number of
samples
Ammonia (as N)
Composite
SM4500NH3F
0.1
0.2
mg/1
1
Dissolved oxygen
Composite
SM4500-0 G
0.1
6.58
mg/1
1
Nitrate/Nitrite
Composite
SM4500-NO3F
1.00
11.6
mg/1
1
Total Kjeldahl nitrogen
Composite
351.2
1.00
ND
mg/1
1
Total Phosphorus
Composite
SM4500-P-F
0.020
3.4
mg/1
1
Total dissolved solids
Composite
SM2540 C
20
170
mg/1
1
Hardness
Composite
200.7
5.0
12
mg/1
1
Chlorine (total residual, TRC)
Grab
SM 4500 CL G
0.013
ND
mg/1
1
Oil and grease .
Grab
1664A
5.0
ND
mg/1
1
metals (total recoverable), cyanide
and total phenols
Antimony
Composite
200.8
5.0
ND
ug/1
1
Arsenic
Composite
200.8
10.0
ND
ug/1
1
Beryllium
Composite
200.8
1.0
ND
ug/1
1
Cadmium
Composite
200.8
1.0
ND
ug/1
1
Chromium
Composite
200.8
5.0
ND
ug/1
1
Copper
Composite
200.8
2.0
8.0
ug/1
1
Lead
Composite
200.8
5.0
ND
ug/1
1
Mercury
Composite
1631 E
0.500
2.38
ng/L
1
Nickel
Composite
200.8
10.0
ND
ug/1
1
Selenium
Composite
200.8
10.0
ND
ug/1
1
Silver
Composite
200.8
1.0
ND
ug/1
1
Thallium
Composite
200.8
0.5
ND
ug/1
1
Zinc
Composite
200.8
10.0
68
ug/1
1
Cyanide
Grab
SM4500 CN-E
0.005
ND
mg/1
1
Total phenolic compounds
Grab
420.1
0.005
ND
mg/1
1
Volatile organic compounds
Acrolein
Grab
624
5.0
ND
ug/1
1
Acrylonitrile
Grab
624
5.0
ND
ug/1
1
Benzene
Grab
624
2.0
ND
ug/1
1
Bromoform
Grab
624
2.0
ND
ug/1
1
Carbon tetrachloride
Grab
624
2.0
ND
ug/1
1
Chlorobenzene
Grab
624
2.0
ND
ug/1
1
Chlorodibromomethane
Grab
624
2.0
ND
ug/1
1
Chloroethane
Grab
624
2.0
ND
ug/1
1
2-chloroethylvinyl ether
Grab
624
5.0
ND
ug/1
1
Chloroform
Grab
624
2.0
ND
ug/1
1
Dichlorobromomethane
Grab
624
2.0
ND
ug/1
1
1,1-dichloroethane
Grab
624
2.0
ND
ug/1
1
1,2-dichloroethane
Grab
624
2.0
ND
ug/1
1
Trans-1,2-dichloroethylene
Grab
624
2.0
ND
ug/1
1
Form - DMR- PPA-1
Page 1

Permit No. ,/1/(e!J[%S . (p f
Outfall I
Annual Monitoring and Pollutant Scan
Month
Year 0,2.�i
gample Analytical
Parameter I Type Method
j Quan on
! Level
p e
Result
too
Measurement
umber of
samples
IVolatile organic compounds (Cont.)
1,1-dichloroethylene
Grab
624
2.0
ND
ug/1
1
1,2-dichloropropane
Grab
624
2.0
ND
ug/1
1
1,3-dichloropropylene
Grab
624
1.0
ND
ug/1
1
Ethylbenzene
Grab
624
2.0
ND
ug/1
1
Methyl bromide
Grab
624
2.0
ND
ug/1
1
Methyl chloride
Grab
624
2.0
ND
ug/1
1
Methylene chloride
Grab
624
2.0
ND
ug/1
1
1,1,2,2-tetrachloroethane
Grab
624
2.0
ND
ug/1
1
Tetrachloroethylene
Grab
624
2.0
ND
ug/1
1
Toluene
Grab
624
2.0
ND
ug/1
1
1,1,1-trichloroethane
Grab
624
2.0
ND
ug/1
1
1, 1 ,2-trichloroethane
Grab
624
2.0
ND
ug/1
1
Trichloroethylene
Grab
624
2.0
ND
ug/1
1
Vinyl chloride
Grab
624
2.0
ND
ug/1
1
:Acid -extractable compounds
P-chloro-m-creso
Grab
625
5.0
ND
ug/1
1
2-chlorophenol
Grab
625
5.0
ND
ug/1
1
2,4-dichlorophenol
Grab
625
5.0
ND
ug/1
1
2,4-dimethylphenol
Grab
625
5.0
ND
ug/1
1
4,6-dinitro-o-cresol
Grab
625
5.0
ND
ug/1
1
2,4-dinitrophenol
Grab
625
10.0
ND •
ug/1
1
2-nitrophenol
Grab
625
5.0
ND
ug/1
1
4-nitrophenol
Grab
625
5.0
ND
ug/1
1
Pentachlorophenol
Grab
625
5.0
ND
ug/1
1
Phenol
Grab
625
5.0
ND
ug/1
1
2,4,6-trichlorophenol
Grab
625
5.0
ND
ug/1
1
)Base -neutral compounds
Acenaphthene
Grab
625
5.0
ND
ug/1
1
Acenaphthylene
Grab
625
5.0
ND
ug/1
1
Anthracene
Grab
625
5.0
ND
ug/1
1
Benzidine
Grab
625
80
ND
ug/1
1
Benzo(a)anthracene
Grab
625
5.0
ND
ug/1
1
Benzo(a)pyrene
Grab
625
5.0
ND
ug/1
1
3,4 benzofluoranthene
Grab
625
5.0
ND
ug/1
1
Benzo(ghi)perylene
Grab
625
5.0
ND
ug/1
1
Benzo(k)fluoranthene
Grab
625
5.0
ND
ug/1
1
Bis (2-chloroethoxy) methane
Grab
625
5.0
ND
ug/1
1
Bis (2-chloroethyl) ether
Grab
625
5.0
ND
ug/1
1
Bis (2-chloroisopropyl) ether
Grab
625
5.0
ND
ug/1
1
Bis (2-ethylhexyl) phthalate
Grab
625
10.0
ND
ug/1
1
4-bromophenyl phenyl ether
Grab
625
5.0
ND
ug/1
1
Butyl benzyl phthalate
Grab
625
5.0
ND
ug/1
1
2-chloronaphthalene
Grab
625
5.0
ND
ug/1
1
Form - DMR- PPA-1
Page 2

Permit No. „l/et sas'f
Outfall
Annual Monitoring and Pollutant Scan
Month
Year
4-chlorophenyl phenyl ether
Grab
625
5.0
ND
ug/1
1
Parameter
Sample
Tape
Analytical
Method
Quantitatlon
Level
Sample
Result
I Units of
1 Measurement
Number of
samples
Base -neutral compounds (cent 1
Chrysene
Grab
625
5.0
ND
ug/1
1
Di-n-butyl phthalate
Grab
625
5.0
ND
ug/1
1
Di-n-octyl phthalate
Grab
625
5.0
ND
ug/1
1
Dibenzo(a,h)anthracene
Grab
625
5.0
ND
ug/1
1
1,2-dichlorobenzene
Grab
625
2.0
ND
ug/1
1
1,3-dichlorobenzene
Grab
625
2.0
ND
ug/1
1
1,4-dichlorobenzene
Grab
625
2.0
ND
ug/1
1
3,3-dichlorobenzidine
Grab
625
5.0
ND
ug/1
1
Diethyl phthalate
Grab
625
5.0
ND
ug/1
1
Dimethyl phthalate
Grab
625
5.0
ND
ug/1
1
2,4-dinitrotoluene
Grab
625
5.0
ND
ug/1
1
2,6-dinitrotoluene
Grab
625
5.0
ND
ug/1
1
1,2-diphenylhydrazine
Grab
625
5.0
ND
ug/1
1
Fluoranthene
Grab
625
5.0
ND
ug/1
1
Fluorene
Grab
625
5.0
ND
ug/ 1
1
Hexachlorobenzene
Grab
625
5.0
ND
ug/1
1
Hexachlorobutadiene
Grab
625
5.0
ND
ug/1
1
Hexachlorocyclo-pentadiene
Grab
625
10.0
ND
ug/1
1
Hexachloroethane
Grab
625
5.0
ND
ug/1
1
Indeno(1,2,3-cd)pyrene
Grab
625
5.0
ND
ug/1
1
Isophorone
Grab
625.
5.0
ND
ug/1
1
Naphthalene
Grab
625
5.0
ND
ug/1
1
Nitrobenzene
Grab
625
5.0
ND
ug/1
1
N-nitrosodi-n-propylamine
Grab
625
5.0
ND
ug/1
1
N-nitrosodimethylamine
Grab
625
5.0
ND
ug/1
1
N-nitrosodiphenylamine
Grab
625
5.0
ND
ug/1
1
Phenanthrene
Grab
625
5.0
ND
ug/l
1
Pyrene
Grab
625
5.0
ND
ug/l
1
1,2,4,-trichlorobenzene
Grab
625
2.0
ND
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.
�1'
Authorized Representative name
Sign
Date
Form - DMR- PPA-1
Page 3

Whole Effluent Toxicity Testing and Self Monitoring Summary
Magellan Terminal Holdings- Charlotte NC0005185/006 County: Mecklenburg Region: MRO Basin: CTB34
Fthd24Ac Begin: 10/1/2015 24hr ac monit epis NonComp: 7Q10: 0.0 PF: NA IWC: 100 Freq: A
J F M A M J J A S
2017 >100
2018 - - >100
2019 - >100
2020 - - >100
0
SOC JOC:
N D
Magellan Terminal Holdings Greensboro NC0074578/002 County: Guilford Region: WSRO Basin: CPF08 Jan Apr Jul Oct
Fthd24PF Begin: 1/1/2017 Acu Fthd 24hr PF Lim NonComp: 7Q10: 0.0 PF: 0.006 IWC: 100 Freq: A
J F M A M J J A S
2017 >100 - - -
2018 >100 -
2019 >100 -
2020 >100
2021 Pass - >100 - - -
Magellan Terminal Holdings-G'boro NC0003671/001 County: Guilford Region: WSRO Basin: CPF02 Jan Apr Jul Oct
Fthd24PF Begin: 1/1/2017 Acu Fthd 24hr PF: 90 NonComp: 7Q10: 0.0 PF: NA IWC: 100 Freq: A
J F M A M J J A S
2017 >100 - - - - 2018 >100 - -
2019 >100 - - -
2020 - - -
Magellan Terminals - Charlotte/Souther NC0074705/001 County: Mecklenburg Region: MRO
Fthd24Ac Begin: 9/1/2015 24hr LC50 ac monit e NonComp: 7Q10: 0
J F M A M J
2017 - - >100
2018 - - >100
2019 - - - >100
2020 - - - >100
0
0
SOC JOC:
N D
SOC JOC:
N D
Pass
Basin: CTB34
PF: 0 IWC: 100 Freq: A
J A S
0
SOC_JOC:
N D
Maggie Valley WWTP NC0056561/001 County: Haywood Region: ARO Basin: FRB05 Jan Apr Jul Oct SOC __IOC:
Ceri7dPF Begin: 9/1/2017 chr lim: 6% NonComp: Single 7Q10: 23.0 PF: 1.0 IWC: 6.3 Freq: Q
J F M A M J J A S 0 N D
2017 Pass >24(P) >24(P) Pass Pass Pass - Pass
2018 Pass - - Pass Pass Pass
2019 Pass - - Pass Pass 17(P) Pass
2020 >24(P) Pass - - >24(P) Pass - - Pass >24(P) - Pass -
2021 Pass - - Pass - - - -
Leeend: P. Fathead minnow (Pimohales oromelas). H=No Flow (facility is active). s = Solit test between Certified Labs
Page 70 of 120

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 05/28/21 Page 1 of 1
Permit: NC0056561 MRs Betweei 4 - 2017 and 4 - 2021
Facility Name: % Param Nam( %
Major Minor:
Region: % Violation Category:Limit Violation Program Category: %
County: % Subbasin:% Violation Action: %
PERMIT: NC0056561
FACILITY: Town of Maggie Valley - Maggie Valley WWTP
COUNTY: Haywood
REGION: Asheville
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED
VALUE Over
VIOLATION TYPE VIOLATION ACTION
10-2019 001 Effluent Coliform, Fecal MF, MFC 10/19/19 3 X week #/100m1 400 432.47 8.1 Weekly Geometric Mean Proceed to NOD
Broth, 44.5 C Exceeded

United States Environmental Protection Agency
EPA Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection
1 IN I 2 LI 3 I NC0056561 111 121 21/09/23 117
Type
181OI
IIIIIIIIIII
Inspector Fac Type
'PI 2011
21111111 IIIIIIIIIIIIIIIIII I IIIIII
P6
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved
671I 761I 711 I 72 I N I 73 I 74 71
I I
I I I I I I 180
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Maggie Valley WWTP
U S Hwy 276 N
Maggie Valley NC 28751
Entry Time/Date
10:00AM 21/09/23
Permit Effective Date
17/09/01
Exit Time/Date
12:00PM 21/09/23
Permit Expiration Date
21/03/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Michael Lee Mehaffey/ORC/828-400-9494/
Seth Lewis Boyd///
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Michael Lee Mehaffey,3987 Soco Rd Maggie Valley NC
28751 //828-926-0866/8289263576 No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenar Records/Reports
Sludge Handling DispoPollution Prevention Facility Site Review Effluent/Receiving Wate
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
Timothy H Heim DWR/ARO WQ/828-296-4665/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page# 1

31
NPDES yr/mo/day
NC0056561 111 121 21/09/23
I17
Inspection Type
18 LI
(Cont.)
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Tim Heim of the Asheville Regional Office performed a Compliance Inspection of Facility on
September 23, 2021. Mike Mehaffey (PWD & ORC), Seth Boyd (BORC) and Jordan Davis assisted
with the inspection. The facility appeared well maintained and operated at the time of the inspection,
and in compliance with Permit NC0056561.
The following items were noted at the time of the inspection:
The only access road to the facility is experiencing significant erosion during flood events and the
streambank supporting the road has the potential to become unstable. Access to the facility is critical
and must be maintained. It is recommended that a professional engineer with appropriate experience
be contacted to address this issue. The Asheville Regional Office may be able to assist with
permitting and technical information.
Page# 2

Permit: NC0056561
Inspection Date: 09/23/2021
Owner - Facility: Maggie Valley WWTP
Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? • El El El
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable II ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new El ❑ ▪ ❑
application?
Is the facility as described in the permit? • El El El
# Are there any special conditions for the permit? El • El El
Is access to the plant site restricted to the general public? • El ❑ ❑
Is the inspector granted access to all areas for inspection? • ❑ ❑ ❑
Comment:
Aerobic Digester
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?
Comment:
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
Bar Screens Yes No NA NE
Type of bar screen
a.Manual ❑
b.Mechanical •
Are the bars adequately screening debris? • ❑ ❑ ❑
Is the screen free of excessive debris? • ❑ ❑ ❑
Is disposal of screening in compliance? • ❑ ❑ ❑
Is the unit in good condition? • ❑ ❑ ❑
Comment:
Aeration Basins
Mode of operation
Yes No NA NE
Ext. Air
Page# 3

Permit: NC0056561
Inspection Date: 09/23/2021
Owner - Facility: Maggie Valley WWTP
Inspection Type: Compliance Evaluation
Aeration Basins Yes No NA NE
Type of aeration system Diffused
Is the basin free of dead spots? ■ ❑ ❑ ❑
Are surface aerators and mixers operational? El El • El
Are the diffusers operational? • El El El
Is the foam the proper color for the treatment process? • El El El
Does the foam cover less than 25% of the basin's surface? • ❑ ❑ ❑
Is the DO level acceptable? • El El El
Is the DO level acceptable?(1.0 to 3.0 mg/I) • El El El
Comment: DO was tested at 3-6 mg/L at various points in the aeration basin during the inspection.
Disinfection -Gas
Are cylinders secured adequately?
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?
Comment:
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
❑ ❑ • ❑
De -chlorination Yes No NA NE
Type of system ? Gas
Is the feed ratio proportional to chlorine amount (1 to 1)? • El El El
Is storage appropriate for cylinders? • El El El
# Is de -chlorination substance stored away from chlorine containers? • El El El
Comment:
Are the tablets the proper size and type?
Are tablet de -chlorinators operational?
Number of tubes in use?
❑ ❑ ■ ❑
• ❑ • ❑
Page# 4

Permit: NC0056561
Inspection Date: 09/23/2021
Owner - Facility: Maggie Valley WWTP
Inspection Type: Compliance Evaluation
De -chlorination
Comment:
Effluent Pipe
Is right of way to the outfall properly maintained?
Are the receiving water free of foam other than trace amounts and other debris?
If effluent (diffuser pipes are required) are they operating properly?
Comment:
Standby Power
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?
Comment:
Yes No NA NE
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
❑ ❑ • ❑
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
❑ ❑ ❑ •
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
Page# 5

From: Armeni, Lauren E
To: Coco, Nick A
Cc: Armeni, Lauren E
Subject: RE: Draft Permit Maggie Valley WWTP, NPDES Permit Number NC0056561, SIC Code 4952
Date: Monday, August 2, 2021 11:54:43 AM
Attachments: image007.onq
NC0056561 STFRPT 2021.DOCX.PDF
56561 Fact Sheet Draft full -LA comment.odf
image004.png
imaae006.onq
Good Afternoon,
Please see attached for a minor comment to the Fact Sheet, as well as the Staff Report. The only
comment I have on the Draft Permit is relating to the system components list. The Draft Permit has
"2 sludge holding basins" and "3 digesters". I asked Mike Mehaffey (ORC) about this, and he said the
following:
"There are only 2 digester basins. Digester #2 was expanded during the last expansion. It has 2
basins that share a concrete wall with large below the surface openings that tie them
together. But is only counted as 1 basin."
So it really should just say "2 digesters", and delete "2 sludge holding basins", because a sludge
holding basin is the same thing as a digester. There are 2 digesters, and one of the digesters has 2
basins, but since they are hydraulically connected, it's counted as one digester.
Thanks,
Lauren Armeni
Environmental Specialist — Asheville Regional Office
Water Quality Regional Operations Section
NCDEQ — Division of Water Resources
828 296 4500 office
828 782 0064 mobile
[e-mail]
2090 U.S. Hwy. 70
Swannanoa, N.C. 28778
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental
Quality has adjusted operations to protect the health and safety of the staff and public. Many employees
are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office
locations are limiting public access to appointments only. Please check with the appropriate staff before

DocuSign Envelope ID: 7A089637-E096-45EB-BE15-7FDA3BC75188
Environmental
Quality
State of North Carolina
Division of Water Resources
Water Quality Regional Operations Section
Staff Report
To: ® NPDES Unit ❑ Non -Discharge Unit Application No.: NC0056561
Attn: Nick Coco
From: Lauren Armeni
Asheville Regional Office
Facility name: Maggie Valley WWTP
Note: This form has been adapted from the non -discharge facility staff report to document the review of both non -
discharge and NPDES permit applications and/or renewals. Please complete all sections as they are applicable.
I. GENERAL AND SITE VISIT INFORMATION
1. Was a site visit conducted? ® Yes or ❑ No
a. Date of site visit: 07/09/2019 (Toxicity split recently conducted on 07/20/2021 & 07/22/2021)
b. Site visit conducted by: Mikal Willmer
c. Inspection report attached? ['Yes or ® No (See Laserfiche for Inspection)
d. Person contacted: Mike Mehaffey (ORC) and their contact information: 8( 28) 400-9494 ext.
e. Driving directions: Take exit 20 for US-276 S off of I-40 W towards. Turn right onto US-276 S. then make
a U-turn, and the driveway for the WWTP (5320 Jonathan Creek Road) will be on your right across a
small bridge.
2. Discharge Point(s):
Latitude: 35.59889 Longitude: -83.00639
Latitude: Longitude:
3. Receiving stream or affected surface waters: Jonathans Creek, Segment 5-26-(7)
Classification: C, Tr
River Basin and Subbasin No. French Broad/04-03-05/06010106
Describe receiving stream features and pertinent downstream uses: River is protected for Class C uses.
II. PROPOSED FACILITIES: NEW APPLICATIONS
1. Facility Classification: (Please attach completed rating sheet to be attached to issued permit)
Proposed flow:
Current permitted flow:
2. Are the new treatment facilities adequate for the type of waste and disposal system? n Yes or n No
If no, explain:
3. Are site conditions (soils, depth to water table, etc) consistent with the submitted reports? ❑ Yes ❑ No ❑ N/A
If no, please explain:
4. Do the plans and site map represent the actual site (property lines, wells, etc.)? n Yes n No n N/A
If no, please explain:
FORM: WQROSSR 04-14 Page 1 of 6

DocuSign Envelope ID: 7A089637-E096-45EB-BE15-7FDA3BC75188
5. Is the proposed residuals management plan adequate? ❑ Yes ❑ No ❑ N/A
If no, please explain:
6. Are the proposed application rates (e.g., hydraulic, nutrient) acceptable? n Yes n No n N/A
If no, please explain:
7. Are there any setback conflicts for proposed treatment, storage and disposal sites? ❑ Yes or ❑ No
If yes, attach a map showing conflict areas.
8. Is the proposed or existing groundwater monitoring program adequate? ❑ Yes ❑ No n N/A
If no, explain and recommend any changes to the groundwater monitoring program:
9. For residuals, will seasonal or other restrictions be required? n Yes ❑ No ❑ N/A
If yes, attach list of sites with restrictions (Certification B)
Describe the residuals handling and utilization scheme:
10. Possible toxic impacts to surface waters:
11. Pretreatment Program (POTWs only):
III. EXISTING FACILITIES: z AND RENEWAL APPLICATIONS
1. Are there appropriately certified Operators in Charge (ORCs) for the facility? ® Yes ❑ No ❑ N/A
ORC: Michael Mehaffev Certificate #: 993639 Backup ORC: Thomas Corbin Certificate #: 987148
2. Are the design, maintenance and operation of the treatment facilities adequate for the type of waste and disposal
system? ® Yes or ❑ No
If no, please explain:
Description of existing facilities:
• Mechanical influent bar screen
• Back-up manual bar screen
• Flow selector basin
• Two (2) rectangular aeration basins
• Two (2) rectangular Aero-Mod clarifiers
• Five (5) dual aeration blowers
• Two (2) digesters
• Chlorination
• Chlorine contact basin
• Sulfur dioxide dechlorination
• Effluent flow monitoring
• Belt filter press
• Alkaline sludge stabilization facility
Proposed flow: No Change.
Current permitted flow: 1.0 MGD
Explain anything observed during the site visit that needs to be addressed by the permit, or that may be important
for the permit writer to know (i.e., equipment condition, function, maintenance, a change in facility ownership, etc
3. Are the site conditions (e.g., soils, topography, depth to water table, etc) maintained appropriately and adequately
assimilating the waste? n Yes or n No ® N/A
If no, please explain:
FORM: WQROSSR 04-14 Page 2 of 6

DocuSign Envelope ID: 7A089637-E096-45EB-BE15-7FDA3BC75188
4. Has the site changed in any way that may affect the permit (e.g., drainage added, new wells inside the compliance
boundary, new development, etc.)? n Yes or ® No
If yes, please explain:
5. Is the residuals management plan adequate? ® Yes or ❑ No
If no, please explain:
6. Are the existing application rates (e.g., hydraulic, nutrient) still acceptable? ❑ Yes or ❑ No ® N/A
If no, please explain:
7. Is the existing groundwater monitoring program adequate? ❑ Yes ❑ No ® N/A
If no, explain and recommend any changes to the groundwater monitoring program:
8. Are there any setback conflicts for existing treatment, storage and disposal sites? ❑ Yes or ® No
If yes, attach a map showing conflict areas.
9. Is the description of the facilities as written in the existing permit correct? ® Yes or ❑ No
If no, please explain:
10. Were monitoring wells properly constructed and located? ❑ Yes ❑ No ® N/A
If no, please explain:
FORM: WQROSSR 04-14 Page 3 of 6

DocuSign Envelope ID: 7A089637-E096-45EB-BE15-7FDA3BC75188
11. Are the monitoring well coordinates correct in BIMS? ❑ Yes ❑ No ❑ N/A
If no, please complete the following (expand table if necessary):
Monitoring Well
Latitude
Longitude
O
l
el
0
I
//
O
/
//
0
I
II
O
/
//
0
I
/I
12. Has a review of all self -monitoring data been conducted (e.g., DMR, NDMR, NDAR, GW)? ® Yes or ❑ No
Please summarize any findings resulting from this review: 2018 - Did not conduct the effluent pollutant scan
and received a Notice of Violation (NOV), but then conducted the scan in 2019 to satisfy this requirement.
2019 — Notice of Deficiency (NOD) was issued for a limit violation for fecal coliform. No other deficiencies
or violations were issued during the permit cycle.
Provide input to help the permit writer evaluate any requests for reduced monitoring, if applicable.
13. Are there any permit changes needed in order to address ongoing BIMS violations? ❑ Yes or ® No
If yes, please explain:
14. Check all that apply:
❑ No compliance issues ❑ Current enforcement action(s) ❑ Currently under JOC
® Notice(s) of violation ❑ Currently under SOC ❑ Currently under moratorium
Please explain and attach any documents that may help clarify answer/comments (i.e., NOV, NOD, etc.)
Has the RO been working with the Permittee? Is a solution underway or in place?
Have all compliance dates/conditions in the existing permit been satisfied? ❑ Yes ❑ No ® N/A
If no, please explain:
15. Are there any issues related to compliance/enforcement that should be resolved before issuing this permit?
❑ Yes ®No❑N/A
If yes, please explain:
16. Possible toxic impacts to surface waters:
17. Pretreatment Program (POTWs only): An Industrial Waste Survey (IWS) is required to be submitted within
180 days of issuance of this permit. There is currently no Pretreatment Program.
FORM: WQROSSR 04-14 Page 4 of 6

DocuSign Envelope ID: 7A089637-E096-45EB-BE15-7FDA3BC75188
IV. REGIONAL OFFICE RECOMMENDATIONS
1. Do you foresee any problems with issuance/renewal of this permit? ❑ Yes or ® No
If yes, please explain:
2. List any items that you would like the NPDES Unit or Non -Discharge Unit Central Office to obtain through an
additional information request:
Item
Reason
3. List specific permit conditions recommended to be removed from the permit when issued:
Condition
Reason
4. List specific special conditions or compliance schedules recommended to be included in the permit when issued:
Condition
Reason
5. Recommendation: ❑ Hold, pending receipt and review of additional information by regional office
® Hold, pending review of draft permit by regional office
❑ Issue upon receipt of needed additional information
n Issue
n Deny (Please state reasons: )
DocuSigned/by:
baWeetAA. n�b1lu/ld
6. Signature of report preparers cB17648770724E6...
DocuSigned by:
�� �022
Signature of Assistant Regional Supervisor: E397192DABFB4FF
8/2/2021
Date:
FORM: WQROSSR 04-14 Page 5 of 6

DocuSign Envelope ID: 7A089637-E096-45EB-BE15-7FDA3BC75188
V. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
N/A
FORM: WQROSSR 04-14 Page 6 of 6