NC0088722_Major Modification_20191209

'.
ROY COOPER i 4- n
i
Governor ir '-i
MICHAEL S.REGAN ` y.
Secretary .'
LINDA CULPEPPER NORTH CAROLINA
Director Environmental Quality
December 11,2019
Don Chamblee, Director of Public Works
Lincoln County
115 West Main Street
Lincolnton,North Carolina, 28092
Subject: Draft NPDES Permit Renewal &
Expansion
Permit NC0088722
Killian Creek WWTP
Lincoln County
Grade III/IV Biological WPCS
SIC Code 4952
Dear Mr. Chamblee:
Enclosed with this letter is a copy of the Draft NPDES permit renewal for your facility. Please
review this draft carefully to ensure thorough understanding of the requirements and conditions it
contains. There are several changes from the existing permit, including the following:
• The NC 2007-2014 Water Quality Standards(WQS) Triennial Review was approved by
the NC Environmental Management Committee (EMC) on November 13, 2014. The US
EPA subsequently approved the WQS revisions on April 6, 2016 with some exceptions.
The NC Division of Water Resources NPDES Permitting Unit is required to implement the
new dissolved metal standards in all permits public noticed after April 6, 2016. The new
standards for most metals include acute standards. Further, the freshwater standards for
several metals are expressed as the dissolved form of the metals, and seven metals have
hardness-dependent equations. As a result, the NPDES Permitting Unit will need site-
specific effluent hardness data and instream hardness data,upstream of the discharge, for
each facility monitoring these metals in order to calculate permit limitations. Effluent
hardness and instream hardness sampling, upstream of the discharge, have been added to
the permit at a monitoring frequency of quarterly. [See A.(2.)-A. (4.)]
• Total copper and total zinc showed reasonable potential to exceed WQS at flow tiers
exceeding 2.5 MGD, therefore, those parameters have been added for monitoring at a
frequency of quarterly starting with the flow tier of 3.35 MGD. [See A. (2.)-A. (4.)]
D--0..
Q North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center i Raleigh.North Carolina 27699 1617
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rw.. cMZ \ /', 919.707.9000

• Flow tiers of 4.9 MGD and 6.6 MGD for expansion have been added. Please note the new
limits for BOD,ammonia-nitrogen, dissolved oxygen, total nitrogen, and total phosphorus
at those tiers. [See A. (3.)-A. (4.)]
• The Lincoln County reported total silver and total selenium at less than detection, with
detection levels of <5.0 µg/L and <10.0 µg/L respectively in their Priority Pollutant
Analyses. The County's allowable discharge concentrations range (based on flow) from
0.078-0.131 µg/L for total silver and 6.6-11.0 µg/L for total selenium. DWR's laboratory
identifies the target Practical Quantification Limits (PQLs) for total silver and total
selenium as 1.0 µg/L. 15A NCAC 2B .0505 (e) (4) requires that all test procedures must
produce detection and reporting levels that are below the permit discharge requirements
and all data generated must be reported to the approved detection level or lower reporting
level of the procedure. If no approved methods are capable of achieving a detection level
below the permit discharge requirement (or allowable discharge concentration) the method
with the lowest detection level must be used.The County should use sufficiently sensitive
test methods for all pollutants, including when performing Effluent Pollutant
Scans/Priority Pollutant Analyses.
• Instream monitoring for dissolved oxygen and temperature have been added starting with
the 2.5 MGD flow tier. [See A. (1.)-A. (4.)]
• The monitoring frequency for BOD,ammonia, pH, TSS, and temperature increases from
3/week to daily once annual average flow exceeds 2.25 MGD.At this flow tier the facility
becomes a Grade 4 Biological Water Pollution Control System.
• Some of the wording has changed in Special Condition A. (5.), Chronic Toxicity Permit
Limit, please review each paragraph carefully.
P �P Y
• Special Condition A. (6.) has been modified to include the specific three years in which
the Effluent Pollutant Scan shall be performed (2021, 2022, and 2023). In addition,at the
end of the Special Condition, 2nd species Toxicity Testing Requirements for municipal
permit renewals per Federal Regulations [40 CFR 122.21(j)(5)] have been added.
• Parameter codes have been added to the Effluent Limitations and Monitoring Requirements
[ See A. (1.)-A. (4.)]
• Regulatory citations have been added to the permit.
• Federal regulations require electronic submittal of all discharge monitoring reports
(DMRs) and program reports. The requirement to continue reporting discharge
monitoring data electronically using the NC DWR's Electronic Discharge Monitoring
Report (eDMR) internet application has been added to your NPDES permit. [See A. (7.)]
The NPDES standard conditions(Parts II,III,and IV)that are a part of the permit are not included
in this draft document (cover, map, and Part I). The conditions are the same as in your current
permit except that agency and division names have been updated.The latest version is available at
https://bit.ly/2BZ4xxx and can be viewed online or downloaded as a PDF file.
Concurrent with this notification the Division is publishing a notice in a newspaper having
circulation in the general Lincoln County area, soliciting public comments on this draft permit.
Please provide any written comments you may have to the following: NCDEQ/DWR,NPDES
Permitting Branch, 1617 Mail Service Center, Raleigh, NC 27699-1617 no later than 30 days
after receipt of this draft permit.
Page 2 of 3

Following the 30-day public comment period, the Division will review all pertinent comments
and take appropriate action prior to issuing a fmal permit. If you have questions concerning this
draft permit,please call me at(919) 707-3612 or by email at [e-mail].
Sincerely,
Ak)WW
David Hill, Environmental Specialist II
NPDES Complex Permitting Unit
Hardcopy: NPDES Files
Ecopy: US EPA Region 4
DWR/Aquatic.Toxicology Branch/Hannah Headrick
DWR/Mooresville Regional Office/Water Quality Regional Operations
DWR/Operator Certification Program/Maureen Kinney
DWI/Trupti Desai
WRC/Maria Dunn
FWS/Sara Ward
Page 3 of 3

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Latitude:35°25'24" itgi
Longitude: 81'01'50" NC0088722 Facility �4,
Quad#: F14NE Lincoln County Location
Stream Class: C
S Killian Creek WWTP
ubbasin:03-08 33
MAP NOT TO SCALE
Receiving Stream: Killian Creek Nt/zoj

Permit NC0088722
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Lincoln County
is hereby authorized to discharge wastewater from a facility located at the
Killian Creek WWTP
7085 Old Plank Road
Stanley
Lincoln County
to receiving waters designated as Killian Creek in the Catawba River Basin in accordance with
effluent limitations, monitoring requirements, and other applicable conditions set forth in Parts I,
II, III and IV hereof.
This permit shall become effective Month, 20xx
This permit and authorization to discharge shall expire at midnight on December 30, 2024.
Signed this day Month, 20xx
DRAFT
Linda Culpepper, Director
Division of Water Resources
By the Authority of the Environmental Management Commission

Permit NC0088722
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are
hereby revoked. As of this permit issuance, any previously issued permit bearing this number is
no longer effective. Therefore,the exclusive authority to operate and discharge from this facility
arises under the permit conditions,requirements, terms, and provisions included herein.
Lincoln County is hereby authorized to:
1. Continue to operate and maintain an existing 3.35 MGD wastewater treatment facility
consisting of the following components:
• Bar screen and grit collection
• Dual sequencing batch reactors
• Post equalization basin
• Effluent tertiary disk filters . `
• Dual bank ultraviolet disinfectio 4
• Aerobic digestion
• Sludge holding tank
• Sludge dewatering including rotary drum thickener and rotary sludge press
• Reaeration
This facility is located at the Killian Creek Wastewater Treatment Plant, 7085 Old Plank
Road, Stanley, Lincoln County, and
2. After receiving an Authorization to Construct, construct a new 4.9 MGD wastewater treatment
plant, and upon submitting an Engineer's Certification form, operate said treatment works;
3. After receiving an Authorization to Construct, construct a new 6.6 MGD wastewater treatment
plant, and upon submitting an Engineer's Certification form, operate said treatment works;
4. Discharge from said treatment works at the location specified on the attached map via Outfall
001 into Killian Creek, classified C waters in the Catawba River Basin.
2 of 12

Permit NC0088722
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 12.5 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.] Grade III
Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of the permit and lasting until the average flow for a
calendar year exceeds 2.25 MGD or expiration,whichever occurs first,the permittee is authorized to
discharge treated municipal wastewater from Outfall 001. Such discharges shall be limited and
monitored' by the permittee as specified below:
PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS
Monthly Weekly Daily Measurement Sample Sample
PARAMETER CODE Average Average Maximum Frequency Type Location2
Flow 50050 2.5 MGD Continuous Recording I or E
BOD,5 day,20°C3 C0310 30.0 mg/L 45.0 mg/L 3/Week Composite I and E
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L 3/Week Composite I and E
NH3 as N C0610
(Apr 1-Oct 31) 1.5 mg/L 4.5 mg/L 3/Week Composite E
NH3 as N CO610
4.3 mg/L 12.9 mg/L 3/Week Composite E
(Nov 1-Mar31)
pH 00400 Between 6.0 and 9.0 Standard Units 3/Week Grab E
Temperature°C 00010 Monitor and Report 3/Week Grab E
Fecal Coliform 31616 200/100 mL 400/100 mL 3/Week Grab E
(geometric mean)
Total Nitrogen (mg/L) C0600 Monitor and Report Monthly Composite E
Total Phosphorus(mg/L) C0665 Monitor and Report Monthly Composite E
Chronic Toxicity5 TGP3B Pass/Fail at 56% Quarterly Composite E
Pollutant Scan6 NC01 Monitor and Report Footnote 6 Footnote 6 E
Dissolved Oxygen (mg/L) 00300 Monitor and Report Variable2 Grab U and D
Temperature°C 00010 Monitor and Report Variable2 Grab U and D
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (7.).
2. Sample locations I-Influent, E-Effluent, U-Upstream at least 50 feet upstream from the outfall, D-Downstream
at Old Plank Road. Upstream and downstream samples shall be grab samples collected 3/week during June,
July,August,and September and 1/week during the remainder of the year.
3. The monthly average effluent BOD and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value(85%removal).
4. For a given wastewater sample,TN=TKN+NO3-N+NO2-N,where TN is Total Nitrogen,TKN is Total
Kjeldahl Nitrogen,and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively.
5. Chronic Toxicity(Ceriodaphnia dubia)Pass/Fail at 56%with testing in January,April,July,October.See
Special Condition A.(5.).
6. The permittee shall perform three effluent pollution scans during the term of this permit. See Special Condition
A.(6.).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
3 of 12

Permit NC0088722
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 13.35 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.] Grade IV
Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning upon the average flow for a calendar year exceeding 2.25 MGD and lasting
until expiration or expansion,whichever occurs first,the permittee is authorized to discharge treated
municipal wastewater from Outfall 001. Such discharges shall be limited and monitored' by the permittee
as specified below:
PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS
Monthly Weekly Daily Measurement Sample Sample
PARAMETER CODE Average Average Maximum Frequency Type Location2
Flow 50050 3.35 MGD Continuous Recording I or E
BOD,5 day,20°C3 C0310 30.0 mg/L 45.0 mg/L Daily Composite I and E
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L Daily Composite I and E
NH3 as N C0610
(Apr 1-Oct 31) 1.3 mg/L 3.9 mg/L Daily Composite E
NH3 as N C0610
(Nov 1-Mar 31) 3.5 mg/L 10.5 mg/L Daily Composite E
pH 00400 Between 6.0 and 9.0 Standard Units Daily Grab E
Temperature°C 00010 Monitor and Report Daily Grab E
Fecal Coliform 31616 200/100 mL 400/100 mL Daily Grab E
(geometric mean)
Total Nitrogen (mg/L) C0600 Monitor and Report Monthly Composite E
Total Phosphorus(mg/L) C0665 Monitor and Report Monthly Composite E
Total Copper(µg/L) 01042 Monitor and Report Quarterly Composite E
Total Zinc(µg/L) 01092 Monitor and Report Quarterly Composite E
Chronic Toxicitys TGP3B Pass/Fail at 63% Quarterly Composite E
Pollutant Scan6 NC01 Monitor and Report Footnote 6 Footnote 6 E
Hardness?Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Composite E
Dissolved Oxygen (mg/L) 00300 Monitor and Report Variable2 Grab U and D
Temperature°C 00010 Monitor and Report Variable2 Grab U and D
Hardness8 Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Grab U
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A.(7.).
2. Sample locations I-Influent, E-Effluent, U-Upstream at least 50 feet upstream from the outfall,D-Downstream
at Old Plank Road. Upstream and downstream samples shall be grab samples collected 3/week during June,
July,August,and September and 1/week during the remainder of the year.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value(85%removal).
4. For a given wastewater sample,TN=TKN+NO3-N+NO2-N,where TN is Total Nitrogen,TKN is Total
Kjeldahl Nitrogen,and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively.
5. Chronic Toxicity(Ceriodaphnia dubia)Pass/Fail at 63%with testing in January,April,July,October. See
Special Condition A.(5.).
6. The permittee shall perform three effluent pollution scans during the term of this permit. See Special Condition
A.(6.).
7. Effluent hardness shall be performed in conjunction with sampling for hardness-dependent metals (cadmium,
copper,lead,nickel,silver,zinc).
8. The permittee shall sample instream hardness upstream of the facility's discharge.The sample shall be
representative of the hardness in the stream.Effluent hardness shall be performed in conjunction with testing for
hardness dependent metals(cadmium,copper,lead,nickel,silver,and zinc).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
4 of 12

Permit NC0088722
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [4.9 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.] Grade IV
Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning upon receipt of an Engineer's Certification for expansion to 4.9 MGD and
the average flow for a calendar year exceeds 3.0 MGD and lasting until expansion or expiration,
whichever occurs first,the permittee is authorized to discharge treated municipal wastewater from Outfall
001. Such discharges shall be limited and monitored' by the permittee as specified below:
PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS
Monthly Weekly Daily Measurement Sample Sample
PARAMETER CODE Average Average Maximum Frequency Type Location2
Flow 50050 4.9 MGD Continuous Recording I or E
BOD,5 day,20°C3 C0310 5.0 mg/L 7.5 mg/L Daily Composite I and E
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L Daily Composite I and E
NH3 as N C0610 1.0 mg/L 3.0 mg/L Daily Composite E
Dissolved Oxygen 00300 Daily Average?6.0 mg/L Daily Composite E
pH 00400 Between 6.0 and 9.0 Standard Units Daily Grab E
Temperature°C 00010 Monitor and Report Daily Grab E
Fecal Coliform 31616 200/100 mL 400/100 mL Daily Grab E
(geometric mean)
Total Nitrogen4 C0600 6.0 mg/L Weekly Composite E
(April-October)
TICN4(mg/L) 00625 Monitor and Report Weekly Composite E
(April-October)
NO3-N+NO2-N4 (mg/L) 00630 Monitor and Report Weekly Composite E
(April-October)
Total Nitrogen4 (mg/L) C0600 Monitor and Report Weekly Composite E
(November-March)
Total Phosphorus C0665 1.0 mg/L Weekly Composite E
Total Copper(µg/L) 01042 Monitor and Report Quarterly Composite E
Total Zinc(µg/L) 01092 Monitor and Report Quarterly Composite E
Chronic Toxicity TGP3B Pass/Fail at 71% Quarterly Composite E
Pollutant Scan6 NC01 Monitor and Report Footnote 6 Footnote 6 E
Hardness'Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Composite E
Dissolved Oxygen (mg/L) 00300 Monitor and Report Variable2 Grab U and D
Temperature°C 00010 Monitor and Report Variable2 Grab U and D
Hardness8 Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Grab U
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (7.).
2. Sample locations I-Influent, E-Effluent, U-Upstream at least 50 feet upstream from the outfall, D-Downstream
at Old Plank Road. Upstream and downstream samples shall be grab samples collected 3/week during June,
July,August,and September and 1/week during the remainder of the year.
3. The monthly average effluent BOD and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value(85%removal).
4. For a given wastewater sample,TN=TKN+NO3-N+NO2-N,where TN is Total Nitrogen,TKN is Total
Kjeldahl Nitrogen,and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively.
5. Chronic Toxicity(Ceriodaphnia dubia)Pass/Fail at 71%with testing in January,April,July,October. See
Special Condition A.(5.).
6. The permittee shall perform three effluent pollution scans during the term of this permit. See Special Condition
A.(6.).
Footnotes for A.(3.)continued on next page:
5 of 12

Permit NC0088722
Footnotes continued for A.(3.):
7. Effluent hardness shall be performed in conjunction with sampling for hardness-dependent metals (cadmium,
copper,lead,nickel,silver,zinc).
8. The permittee shall sample instream hardness upstream of the facility's discharge.The sample shall be
representative of the hardness in the stream.Effluent hardness shall be performed in conjunction with testing for
hardness dependent metals(cadmium,copper,lead,nickel,silver,and zinc).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (4.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [6.6 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.] Grade IV
Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning upon receipt of an Engineer's Certification for expansion to 6.6 MGD and
the average flow for a calendar year exceeds 4.4 MGD and lasting until expiration,the permittee is
authorized to discharge treated municipal wastewater from Outfall 001. Such discharges shall be limited
and monitored' by the permittee as specified below:
PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS
Monthly Weekly Daily Measurement Sample Sample
PARAMETER CODE Average Average Maximum Frequency Type Location2
Flow 50050 6.6 MGD Continuous Recording I or E
BOD,5 day,20°C3 C0310 5.0 mg/L 7.5 mg/L Daily Composite I and E
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L Daily Composite I and E
NH3 as N C0610 1.0 mg/L 3.0 mg/L Daily Composite E
Dissolved Oxygen 00300 Daily Average?6.0 mg/L Daily Composite E
pH 00400 Between 6.0 and 9.0 Standard Units Daily Grab E
Temperature°C 00010 Monitor and Report Daily Grab E
Fecal Coliform 31616 200/ 100 mL 400/100 mL Daily Grab E
(geometric mean) _
Total Nitrogen4 C0600 6.0 mg/L Weekly Composite E
(April-October)
TKN4(mg/L) 00625 Monitor and Report Weekly Composite E
(April-October)
NO3-N+ 4 (mg/L) 00630 Monitor and Report Weekly Composite E
(April-October)
Total Nitrogen4 (mg/L) C0600 Monitor and Report Weekly Composite E
(November-March)
Total Phosphorus C0665 1.0 mg/L Weekly Composite E
Total Copper(µg/L) 01042 Monitor and Report Quarterly Composite E
Total Zinc(µg/L) 01092 Monitor and Report Quarterly Composite E
Chronic Toxicity5 TGP3B Pass/Fail at 77% Quarterly Composite E
Pollutant Scan6 NC01 Monitor and Report Footnote 6 Footnote 6 E
Hardness?Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Composite E
Dissolved Oxygen (mg/L) 00300 Monitor and Report Variablez Grab U and D
Temperature°C 00010 Monitor and Report Variable2 Grab U and D
Hardness8 Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Grab U
Footnote for A.(4.)continued on next page:
6 of 12

Permit NC0088722
Footnotes for A.(4.):
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A.(7.).
2. Sample locations I-Influent, E-Effluent,U-Upstream at least 50 feet upstream from the outfall, D-Downstream
at Old Plank Road. Upstream and downstream samples shall be grab samples collected 3/week during June,
July,August,and September and 1/week during the remainder of the year.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value(85%removal).
4. For a given wastewater sample,TN=TKN+NO3-N+NO2-N,where TN is Total Nitrogen,TKN is Total
Kjeldahl Nitrogen,and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively.
5. Chronic Toxicity(Ceriodaphnia dubia)Pass/Fail at 77%with testing in January,April,July,October.See
Special Condition A.(5.).
6. The permittee shall perform three effluent pollution scans during the term of this permit. See Special Condition
A.(6.).
7. Effluent hardness shall be performed in conjunction with sampling for hardness-dependent metals (cadmium,
copper,lead,nickel,silver,zinc).
8. The permittee shall sample instream hardness upstream of the facility's discharge.The sample shall be
representative of the hardness in the stream.Effluent hardness shall be performed in conjunction with testing for
hardness dependent metals(cadmium,copper,lead,nickel,silver,and zinc).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (5.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) [1 5A NCAC 02B.0200]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at effluent concentrations of 56/63/71/77%for flows 2.5/3.35/4.9/6.6
MGD respectively.
The permit holder shall perform at a minimum,quarterly monitoring using test procedures outlined in the
"North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure,"Revised December 2010,or
subsequent versions or"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised-December 2010)or subsequent versions.The tests will be performed during the months of
January,April,July,and October. These months signify the first month of each three-month toxicity
testing quarter assigned to the facility. Effluent sampling for this testing must be obtained during
representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge
below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit,then multiple-concentration testing shall be performed at a minimum,in
each of the two following months as described in"North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure"(Revised-December 2010)or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered electronically using the
Division's eDMR system for the months in which tests were performed,using the parameter code
TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally,DWR Form AT-3
(original)is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
7 of 12

Permit NC0088722
Or,results can be sent to the email,ATForms.ATBAncdenr.gov.
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete,accurate,include all supporting chemical/physical measurements and all
concentration/response data,and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if
chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required,the permittee will complete the information located at the top of the aquatic toxicity(AT)test
form indicating the facility name,permit number,pipe number,county, and the month/year of the report
with the notation of"No Flow"in the comment area of the form. The report shall be submitted to the
Water Sciences Section at the address cited above
Should the permittee fail to monitor during a month in which toxicity monitoring is required,monitoring
will be required during the following month.Assessment of toxicity compliance is based on the toxicity
testing quarter,which is the three month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division
of Water Resources indicate potential impacts to the receiving stream,this permit may be re-opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival,minimum control organism reproduction,and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later than
the last day of the month following the month of the initial monitoring.
A. (6.) EFFLUENT POLLUTANT SCAN (Municipal POTWs) [G.S. 143-215.1(b)]
The permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below.
One scan must be performed in each of the following years: 2021, 2022, and 2023. Analytical methods
shall be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether
parameters are present in concentrations greater than applicable standards and criteria. Samples should be
collected with one quarterly toxicity test each year, and must represent seasonal variation [i.e., do not
sample in the same quarter every year]. Unless otherwise indicated, metals shall be analyzed as "total
recoverable."
Ammonia(as N) Trans-1,2-dichloroethylene Bis(2-chloroethyl)ether
Chlorine(total residual,TRC) 1,1-dichloroethylene Bis(2-chloroisopropyl)ether
Dissolved oxygen 1,2-dichloropropane Bis(2-ethylhexyl)phthalate
Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether
Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate
Oil and grease Methyl bromide 2-chloronaphthalene
Phosphorus Methyl chloride 4-chlorophenyl phenyl ether
Total dissolved solids Methylene chloride Chrysene
Hardness 1,1,2,2-tetrachloroethane Di-n-butyl phthalate
Antimony Tetrachloroethylene Di-n-octyl phthalate
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Arsenic Toluene Dibenzo(a,h)anthracene
Beryllium 1,1,1-trichloroethane 1,2-dichlorobenzene
Cadmium 1,1,2-trichloroethane 1,3-dichlorobenzene
Chromium Trichloroethylene 1,4-dichlorobenzene
Copper Vinyl chloride 3,3-dichlorobenzidine
Lead Acid-extractable compounds: Diethyl phthalate
Mercury(EPA Method 1631 E) P-chloro-m-cresol Dimethyl phthalate
Nickel 2-chlorophenol 2,4-dinitrotoluene
Selenium 2,4-dichlorophenol 2,6-dinitrotoluene
Silver 2,4-dimethylphenol 1,2-diphenylhydrazine
Thallium 4,6-dinitro-o-cresol Fluoranthene
Zinc 2,4-dinitrophenol Fluorene
Cyanide 2-nitrophenol Hexachlorobenzene
Total phenolic compounds 4-nitrophenol Hexachlorobutadiene
Volatile organic compounds: Pentachlorophenol Hexachlorocyclo-pentadiene
Acrolein Phenol Hexachloroethane
Acrylonitrile 2,4,6-trichlorophenol I ndeno(1,2,3-cd)pyrene
Benzene Base-neutral compounds: Isophorone
Bromoform Acenaphthene Naphthalene
Carbon tetrachloride Acenaphthylene Nitrobenzene
Chlorobenzene Anthracene N-nitrosodi-n-propylamine
Chlorodibromomethane Benzidine N-nitrosodimethylamine
Chloroethane Benzo(a)anthracene N-nitrosodiphenylamine
2-chloroethylvinyl ether Benzo(a)pyrene Phenanthrene
Chloroform 3,4 benzofluoranthene Pyrene
Dichlorobromomethane Benzo(ghi)perylene 1,2,4-trichlorobenzene
1,1-dichloroethane Benzo(k)fluoranthene
1,2-dichloroethane Bis(2-chloroethoxy)methane
Reporting. Test results shall be reported electronically via eDMR or on DWR Form—DMR-PPA-1 (or
on a form approved by the Director)by December 3151 of each designated sampling year. The report shall
be submitted to the following address:
NC DEQ/DWR/Central Files, 1617 Mail Service Center,Raleigh,North Carolina 27699-1617.
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that
Municipal facilities that are subject to the Effluent Pollutant Scan requirements listed above are also
subject to additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5).
The US EPA requires four (4) toxicity tests for a test organism other than the test species currently
required in this permit. The multiple species tests should be conducted either quarterly for a 12-month
period prior to submittal of the permit renewal application, or four tests performed at least annually in the
four and one half year period prior to the application. These tests shall be performed for acute or chronic
toxicity,whichever is specified in this permit. The multiple species toxicity test results shall be filed with
the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
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Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements. Results should also be summarized in Part E
(Toxicity Testing Data) of EPA Municipal Application Form 2A, when submitting the permit renewal
application to the NPDES Permitting Unit.
A. (7.) ELECTRONIC REPORTING OF MONITORING REPORTS [G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December 21,
2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit(Standard Conditions for NPDES Permits):
• Section B.(11.) Signatory Requirements
• Section D.(2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements (Supersedes Section D. (2.)and Section E.(5.)(a)1
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report(eDMR)intemet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the intemet. Until such time that the state's
eDMR application is compliant with EPA's Cross-Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DEQ/Division of Water Resources/Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms(MR 1, 1.1,2, 3)or alternative
forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address
above. See"How to Request a Waiver from Electronic Reporting"section below.
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Regardless of the submission method,the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Starting on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports,when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act(CWA) Section 316(b)Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a
Waiver from Electronic Reporting"section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9),the permittee must identify the initial recipient at the time of
each electronic submission. The permittee should use the EPA's website resources to identify the
initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program)that is the designated entity
for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for
each type of electronic submission and for each state. Instructions on how to access and use the
appropriate electronic reporting tool will be available as well. Information on EPA's NPDES
Electronic Reporting Rule is found at: https://www.federalregister.gov/documents/2015/10/22/2015-
24954/national-pol lutant-discharge-el imination-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the"Reporting Requirements"section above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to the
Division. Requests for temporary electronic reporting waivers must be submitted in writing to the
Division for written approval at least sixty (60) days prior to the date the facility would be required
under this permit to begin submitting monitoring data and reports. The duration of a temporary
waiver shall not exceed 5 years and shall thereupon expire. At such time,monitoring data and reports
shall be submitted electronically to the Division unless the permittee re-applies for and is granted a
new temporary electronic reporting waiver by the Division. Approved electronic reporting waivers
are not transferrable. Only permittees with an approved reporting waiver request may submit
monitoring data and reports on paper to the Division for the period that the approved reporting waiver
request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
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4. Signatory Requirements [Supplements Section B.(11.)(b)and Supersedes Section B.(11.)(di'
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North Carolina's
eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following
web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"I certifil, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible 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."
5. Records Retention [Supplements Section D.(6.)1
The permittee shall retain records of all Discharge Monitoring Reports,including eDMR submissions.
These records or copies shall be maintained for a period of at least 3 years from the date of the report.
This period may be extended by request of the Director at any time [40 CFR 122.41].
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