HomeMy WebLinkAboutNC0021504_Draft Permit_20210420ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
April 20, 2021
Town of Biscoe
Attn: Sam Stewart, Superintendent of Public Works
P.O. Box 1228
Biscoe, NC 27209-1228
Subject: Draft NPDES Permit Renewal
Permit NC0021504, 0.5 MGD
Biscoe WWTP
Montgomery County
Facility Grade II Biological WPCS
SIC Code 4952
Dear Sam Stewart:
Enclosed with this letter is a copy of the Draft NPDES permit renewal for the Biscoe WWTP
(Facility). Please review this draft carefully to ensure a thorough understanding of the requirements
and conditions it contains. There are few changes from the existing permit, including the following:
• Authorization language on the Supplement to Permit Cover Sheet (Cover Sheet) of the
permit was rearranged to account for potential Facility upgrades to comply with the limits
specified for the 0.60 MGD flow tier.
• The outfall coordinates were updated throughout the permit.
• The Facility components list on the Cover Sheet were updated according to the flow process
diagram provided with the permit application renewal.
• Parameter codes were included in the Effluent Limitations and Monitoring Requirements
tables. [See Sections A. (1.) and A. (2.)].
• The limits for ammonia for 0.60 MGD have been updated consistent with the waste load
allocation (WLA) calculation. [See Section A. (2.)].
• The limits for BOD for 0.60 MGD were updated consistent with the DWQ's zero flow policy
[See Section A. (2.)].
• The Division is implementing dissolved metals standards in all permits, per the 2016
revisions to State water quality standards. As such, 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 to calculate permit limitations. Effluent hardness
and instream hardness sampling, upstream of the discharge, have been added to the permit at
a quarterly monitoring frequency [See Sections A. (1.) and A. (2.)].
• Based on the reasonable potential analysis (RPA) predicting a maximum effluent total copper
concentration that is greater than the allowable discharge concentration based on state water
quality standards, quarterly monitoring for total copper has been added to the permit [See
Sections A. (1.) and A. (2.)].
• Based on the RPA predicting a maximum effluent total nickel concentration that is greater than
the allowable discharge concentration based on state water quality standards, quarterly
monitoring for total nickel has been added to the permit [See Sections A. (1.) and A. (2.)].
• Based on the RPA predicting a maximum effluent total zinc concentration that is greater than
half of the allowable discharge concentration based on state water quality standards, quarterly
monitoring for total zinc has been added to the permit [See Sections A. (1.) and A. (2.)].
NORTH DE
�/
Department of EnvironmenMM Dotliry\
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
919.707.9000
• Based on mercury total maximum daily load (TMDL) evaluation showing mercury values
reported at levels exceeding the water quality based effluent limit (WQBEL), we have added
quarterly monitoring and reporting to the permit using Method 1631E. [See Sections A. (1.)
and A. (2.)].
• Special Condition A. (4.) was added. It includes the specific three years in which the Effluent
Pollutant Scan shall be performed (2023, 2024, and 2025) and requirements for proper
completion of Effluent Pollutant Scan in the eDMR system.
• The Town of Biscoe (Town) reported cadmium at less than detection, with detection levels of
< 2.0 µg/L, in the Effluent Pollutant Scans (EPS) and discharge monitoring reports (DMRs).
Based on the RPA, the Town's cadmium allowable discharge concentration (Allowable Cw)
is 0.84 µg/L. DWR's laboratory identifies the target Practical Quantification Limit (PQL) for
cadmium as 0.5 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 Town should use sufficiently sensitive test methods
for all pollutants, including when performing EPS.
• The Town reported total silver at less than detection, with detection levels of < 5.0 µg/L and
< 0.5 µg/L, in the EPS and DMRs. Based on the RPA, the Town's total silver Allowable Cw
is 0.06 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 Town should use sufficiently sensitive test methods for all
pollutants, including when performing EPS.
• The Town reported lead at less than detection, with detection levels of < 10.0 µg/L, in the
EPS and DMRs. Based on the RPA, the Town's lead allowable discharge concentration is 4.9
µg/L. DWR's laboratory identifies the PQL for lead as 2.0 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 Town should use
sufficiently sensitive test methods for all pollutants, including when performing EPS.
• The Town reported selenium at less than detection, with detection levels of < 10.0 µg/L, in
the in the EPS and DMRs. Based on the RPA, the Town's selenium Allowable Cw is 5.0
µg/L. DWR's laboratory identifies the PQL for 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 Town should use sufficiently sensitive test methods for all pollutants, including when
performing EPS.
• Language has been added to update information about upstream and downstream sampling
locations. [See Sections A. (1.) and A. (2.), Footnote 2].
• Language has been added to Footnotes to account for effluent total hardness sampling
requirements. [See permit sections A. (1.), A. (2.), Footnote 5].
Page 2 of 3
• Language has been added to Footnotes to include information on monitoring coalition
programs. [See Sections A. (1.) and A. (2.), Footnote 7].
• A notation was made concerning the Electronic Reporting Rule — NPDES Electronic
Reporting Rule — Phase 2 Extension. EPA extended the Phase 2 deadline to December 21,
2025. [See Special Condition A. (5.)].
• 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 Special Condition A. (5.)].
• Regulatory citations have been added to the permit.
The NPDES standard conditions (Parts II, III, and IV), 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/3k5NFaL 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 Montgomery 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.
If you would like to discuss this permit during the public notice period, please let us know and we
will schedule a virtual meeting.
Following the 30-day public comment period, the Division will review all pertinent comments and
take appropriate action prior to issuing a final permit. If you have questions concerning this draft
permit, please contact me at (919) 707-9130 or by email at diana.yitbarek@ncdenr.gov.
Sincerely,
/
Diana Yit arek, Engineer
NPDES Municipal Permitting Unit
Hardcopy: NPDES Files
Ecopy: US EPA Region 4
Town of Biscoe/ Brandon Holland
Town of Biscoe's Pretreatment Consultant/ Lisa Osthues
DWR/ Municipal Permitting Unit - Pretreatment/ Kristin Litzenberger
DWR/Fayetteville Regional Office/ Mark Brantley and Kristen Slodysko
DWR/Aquatic Toxicology Branch/ Zach Thomas and Cindy Moore
DWR/Operator Certification Program / Maureen Kinney
Page 3 of 3
Permit NC0021504
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
DRAFT 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, the
Town of Biscoe
is hereby authorized to discharge treated wastewater from a facility located at the
Biscoe Wastewater Treatment Plant
NCSR 1556 West of Biscoe, Biscoe, NC 27209
Montgomery County
to receiving waters designated as Hickory Branch, classified as C waters, in subbasin 03-07-15 of the Yadkin -
Pee Dee River Basin in accordance with effluent limits, monitoring requirements, and other conditions set forth
in Parts I, II, III and IV hereof.
This permit shall become effective: Month DD, 2021.
This permit and authorization to discharge shall expire at midnight on June 30, 2026.
Signed this day: Month DD, 2021.
DRAFT
for S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit NC0021504
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.
Town of Biscoe is hereby authorized to
1. Continue to operate a 0.60 MGD capacity wastewater treatment facility with an approved authorization
to discharge 0.50 MGD with the following components:
> Bar screening and grit removal structures
> Dual aeration basins
> Two clarifiers
> Secondary clarifiers
> Gaseous chlorine contact chamber
> Digester
> Sludge drying beds
2. Discharge treated wastewater into the Hickory Branch, classified as C waters, through outfall 001. The
location is specified on the attached map.
3. Operate at 0.50 MGD until the average flow for any twelve (12) month period exceeds 80% of the
permitted flow (0.40 MGD), after which time the facility must receive an Authorization to Construct
(AtC) to upgrade in accordance to the limits specified for 0.60 MGD. Operate at 0.60 MGD after
obtaining an AtC from the Division to construct and operate a 0.60 MGD wastewater treatment system.
Page 2 of 12
Permit NC0021504
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.50 MGD) — OUTFALL
001 [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade II Biological Water Pollution Control System [15A
NCAC 08G .0302]
a) Beginning on the effective date of this permit and lasting until the twelve-month average flow exceeds
0.40 MGD (80% of 0.50MGD), after which time the facility must receive an Authorization to Construct
(AtC) to upgrade in accordance with the limits specified for 0.60 MGD, the Permittee is authorized to
discharge from outfall 001, treated municipal and pretreated industrial wastewater. Such
discharges shall be limited and monitored' by the Permittee as specified below:
PARAMETER
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Sample
Type
Location'
Flow
50050
0.50 MGD
Continuous
Recording
I or E
BOD5 (20°C) 3
C0310
29.0 mg/L
43.5 mg/L
Weekly
Composite
I and E
Total Suspended Solids'
C0530
30.0 mg/L
45.0 mg/L
Weekly
Composite
I and E
Ammonia (NH3 as N)
C0610
6.0 mg/L
18.0 mg/L
Weekly
Composite
E
Fecal Coliform
(Geometric Mean)
31616
200/100 mL
400/100 mL
Weekly
Grab
E
Total
(TRC) a Residual Chlorine
50060
17 µg/L
Weekly
Grab
E
Temperature, °C
00010
Monitor and Report
Weekly
Grab
E
pH
00400
Between 6.0 and 9.0 standard units
Weekly
Grab
E
Specific Conductance,
µmho/cm
00095
Monitor and Report
Weekly
Grab
E
Dissolved Oxygen,
mg/L
00300
Daily Average 2 6 mg/L
Weekly
Grab
E
Total Hardness 5 [as
CaCO3], mg/L
00900
Monitor and Report
Quarterly
Composite
E
Total Phosphorus (TP),
mg/L
C0665
Monitor and Report
Quarterly
Composite
E
Total Nitrogen 6 (TN),
mg/L
C0600
Monitor and Report
Quarterly
Composite
E
Total Copper, µg/L
01042
Monitor and Report
Quarterly
Composite
E
Total Nickel, µg/L
01067
Monitor and Report
Quarterly
Composite
E
Total Mercury
COMER
Monitor and Report
Quarterly
Composite
E
Total Zinc, µg/L
01092
Monitor and Report
Quarterly
Composite
E
Temperature, °C
00010
Monitor and Report
Weekly
Grab7
U and D
Specific Conductance,
µmho/cm
00095
Monitor and Report
Weekly
Grab7
U and D
Dissolved Oxygen,
mg/L
00300
Monitor and Report
Weekly
Grab'
U and D
Total Hardness 5 [as
CaCO3], mg/L
00900
Monitor and Report
Quarterly
Grab
U
Chronic Toxicity8
TGP3B
See Footnote 8
Footnote 8
Footnote 8
E
Effluent Pollutant Scan'
NC01
Monitor and Report
See Footnote 9
E
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR application system. See
Special Condition A. (5).
2. Sample Location: E — Effluent, I — Influent, U — Upstream at least 400 feet from the outfall on Hickory Branch, D —
Downstream, about 2000 feet from the outfall, at Sedberry Rd on White Oak Creek.
3. The monthly average effluent BOD5 and total suspended solids concentrations shall not exceed 15% of the respective influent
value (85 % removal).
Page 3 of 12
Permit NC0021504
4. The Division shall consider all effluent total residual chlorine values reported below 50 ug/1 to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified
laboratory (including field certified), even if these values fall below 50 ug/1.
5. Effluent Total Hardness sampling shall be performed in conjunction with testing for hardness -dependent metals (cadmium,
copper, lead, nickel, silver, and zinc). The Permittee shall sample instream hardness upstream of the facility's discharge. The
sample shall be representative of the hardness in the receiving stream.
6. For a given wastewater sample, total nitrogen (TN) = TKN + NO3-N + NO2-N, where TKN is total kjeldahl nitrogen, and
NO3-N and NO2-N are nitrate and nitrite nitrogen, respectively.
7. If the Permittee is a member of a monitoring coalition program, sampling may be waived as long as the monitoring coalition
agrees to sample at a minimum frequency of quarterly, and the Permittee has obtained approval from DWR-NPDES
Permitting Unit that the location being monitored by the Coalition and the sampling is representative of the receiving stream
for this discharge. The Permittee is responsible for submitting test results with its permit renewal application package. If
Coalition membership is canceled or the Coalition terminates sampling at the approved station, the Permittee will
immediately notify the Division and resume sampling for upstream of its discharge.
8. Chronic Toxicity (Ceriodaphnia) P/F @ 90%, January, April, July, October. See Special Condition A. (3).
9. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit. See Special Condition A. (4).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 12
Permit NC0021504
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.60 MGD) [15A
NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade III Biological Water Pollution Control System [15A NCAC
08G .0302]
a) Beginning when the twelve-month average flow exceeds 0.40 MGD, after which time the facility must
receive an Authorization to Construct (AtC) to upgrade in accordance with the limits specified for 0.60
MGD, and lasting until expiration, the permittee is authorized to discharge from outfall 001, treated
municipal and pretreated industrial wastewater. Such discharges shall be limited and monitored' by
the permittee as specified below:
PARAMETER
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Sample
Type
Location'
Flow
50050
0.60 MGD
Continuous
Recording
I or E
BOD5 (20°C) 3
C0310
5.0 mg/L
7.5 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
Ammonia (NH3 as N)
C0610
1.0 mg/L
3.0 mg/L
3/Week
Composite
E
Fecal Coliform
(Geometric Mean)
31616
200/100 mL
400/100 mL
3/Week
Grab
E
Total
(TRC) a Residual Chlorine
50060
17 µg/L
3/Week
Grab
E
Temperature, °C
00010
Monitor and Report
3/Week
Grab
E
pH
00400
Between 6.0 and 9.0 standard units
3/Week
Grab
E
Specific Conductance,
µmho/cm
00095
Monitor and Report
3/Week
Grab
E
Dissolved Oxygen,
mg/L
00300
Daily Average > 6 mg/L
3/Week
Grab
E
Total Hardness 5 [as
CaCO3], mg/L
00900
Monitor and Report
Quarterly
Composite
E
Total Phosphorus (TP),
mg/L
C0665
Monitor and Report
Quarterly
Composite
E
Total Nitrogen 6 (TN),
mg/L
C0600
Monitor and Report
Quarterly
Composite
E
Total Copper, µg/L
01042
Monitor and Report
Quarterly
Composite
E
Total Nickel, µg/L
01067
Monitor and Report
Quarterly
Composite
E
Total Mercury
COMER
Monitor and Report
Quarterly
Composite
E
Total Zinc, µg/L
01092
Monitor and Report
Quarterly
Composite
E
Temperature, °C
00010
Monitor and Report
3/Week
Grab'
U and D
Specific Conductance,
µmho/cm
00095
Monitor and Report
3/Week
Grab'
U and D
Dissolved Oxygen,
mg/L
00300
Monitor and Report
3/Week
Grab'
U and D
Total Hardness 5 [as
CaCO3], mg/L
00900
Monitor and Report
Quarterly
Grab
U
Chronic Toxicity8
TGP3B
See Footnote 8
Footnote 8
Footnote 8
E
Effluent Pollutant Scan9
NC01
Monitor and Report
See Footnote 9
E
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR application system. See
Special Condition A. (5).
2. Sample Location: E — Effluent, I — Influent, U — Upstream at least 400 feet from the outfall on Hickory Branch, D —
Downstream, about 2000 feet from the outfall, at Sedberry Rd on White Oak Creek.
3. The monthly average effluent BOD5 and total suspended solids concentrations shall not exceed 15% of the respective influent
value (85 % removal).
4. The Division shall consider all effluent total residual chlorine values reported below 50 ug/1 to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified
laboratory (including field certified), even if these values fall below 50 ug/1.
Page 5 of 12
Permit NC0021504
5. Effluent Total Hardness sampling shall be performed in conjunction with testing for hardness -dependent metals (cadmium,
copper, lead, nickel, silver, and zinc). The Permittee shall sample instream hardness upstream of the facility's discharge. The
sample shall be representative of the hardness in the receiving stream.
6. For a given wastewater sample, total nitrogen (TN) = TKN + NO3-N + NO2-N, where TKN is total kjeldahl nitrogen, and
NO3-N and NO2-N are nitrate and nitrite nitrogen, respectively.
7. If the Permittee is a member of a monitoring coalition program, sampling may be waived as long as the monitoring coalition
agrees to sample at a minimum frequency of quarterly, and the Permittee has obtained approval from DWR-NPDES
Permitting Unit that the location being monitored by the Coalition and the sampling is representative of the receiving stream
for this discharge. The Permittee is responsible for submitting test results with its permit renewal application package. If
Coalition membership is canceled or the Coalition terminates sampling at the approved station, the Permittee will
immediately notify the Division and resume sampling for upstream of its discharge.
8. Chronic Toxicity (Ceriodaphnia) P/F @ 90%, January, April, July, October. See Special Condition A. (3).
9. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit. See Special Condition A. (4).
Page 6 of 12
Permit NC0021504
A. (3.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) [15A NCAC 02B.0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 90% at 0.5 MGD and 0.6 MGD.
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, October.
Effluent sampling for this testing 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, North Carolina 27699-1621
Or, results can be sent to the email, ATForms.ATB@ncdenr.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.
Page 7 of 12
Permit NC0021504
A. (4.) EFFLUENT POLLUTANT SCAN [G.S. 143-215.1(B)]
a) 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: 2023, 2024, and 2025. 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) C0610 Trans-1,2-dichloroethylene 34546 Bis (2-chloroethyl) ether 34273
Chlorine (total residual, TRC) 50060 1,1-dichloroethylene 34501 Bis (2-chloroisopropyl) ether 34283
Dissolved oxygen 00300 1,2-dichloropropane C0541 Bis (2-ethylhexyl) phthalate CO100
Nitrate / Nitrite 00630 1,3-dichloropropylene 77163 4-bromophenyl phenyl ether 34636
Kjeldahl nitrogen 00625 Ethylbenzene 34371 Butyl benzyl phthalate 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaphthalene 34581
Phosphorus C0665 Methyl chloride 34418 4-chlorophenyl phenyl ether 34641
Total dissolved solids 70295 Methylene chloride 34423 Chrysene 34320
Hardness 00900 1,1,2,2-tetrachloroethane 81549 Di-n-butyl phthalate 39110
Antimony 01097 Tetrachloroethylene 34475 Di-n-octyl phthalate 34596
Arsenic 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34506 1,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-trichloroethane 34511 1,3-dichlorobenzene 34566
Chromium C0034 Trichloroethylene 39180 1,4-dichlorobenzene 34571
Copper 01042 Vinyl chloride 39175 3,3-dichlorobenzidine 34631
Lead 01051 Acid -extractable compounds: Diethyl phthalate 34336
Mercury (Method 1631E) COMER P-chloro-m-cresol 34452 Dimethyl phthalate 34341
Nickel 01067 2-chlorophenol 34586 2,4-dinitrotoluene 34611
Selenium 01147 2,4-dichlorophenol 34601 2,6-dinitrotoluene C0626
Silver 01077 2,4-dimethylphenol 34606 1,2-diphenylhydrazine 34346
Thallium 01059 4,6-dinitro-o-cresol 34657 Fluoranthene C0376
Zinc 01092 2,4-dinitrophenol 34616 Fluorene 34381
Cyanide 00720 2-nitrophenol 34591 Hexachlorobenzene C0700
Total phenolic compounds 32730 4-nitrophenol 34646 Hexachlorobutadiene C0702
Volatile organic compounds: Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386
Acrolein 34210 Phenol 34694 Hexachloroethane 34396
Acrylonitrile 34215 2,4,6-trichlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403
Benzene 34030 Base -neutral compounds: Isophorone 34408
Bromoform 32104 Acenaphthene 34205 Naphthalene 34696
Carbon tetrachloride 32102 Acenaphthylene 34200 Nitrobenzene 34447
Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine 34428
Chlorodibromomethane 34306 Benzidine 39120 N-nitrosodimethylamine 34438
Chloroethane 85811 Benzo(a)anthracene C0526 N-nitrosodiphenylamine 34433
2-chloroethyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461
Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469
Dichlorobromomethane 32101 Benzo(ghi)perylene 34521 1,2,4-trichlorobenzene C0551
1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242
1,2-dichloroethane 32103 Bis (2-chloroethoxy) methane 34278
b) Reporting. Test results shall be reported electronically using the Division's eDMR system or on DWR
Form DMR-PPA-1(or on a form approved by the Director) by December 31 st of each designated sampling
year.
c) The Permittee must at least report completion of the test in the eDMR system by entering "1" or "Y" for
parameter code NC01 - Annual Pollutant Scan. If utilizing the DWR Form submit to the following
address:
Page 8 of 12
Permit NC0021504
NC DEQ / DWR / NPDES Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. Or
the form may be uploaded at: https://edocs.deq.nc.gov/Forms/NPDES_WW-EDMR-Supplemental-Form
d) 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
Or, results can be sent to the email, ATForms.ATB(&,ncdenr.gov.
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. (5.) ELECTRONIC REPORTING OF DISCHARGE 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) internet 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 internet. The eDMR system may be accessed at:
https://deq.nc.gov/about/divisions/water-resources/edmr
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 following mailing address:
Page 9 of 12
Permit NC0021504
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
See "How to Request a Waiver from Electronic Reporting" section below.
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.
NPDES Electronic Reporting Rule — Phase 2 Extension. EPA extended the Phase 2 deadline 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.
Starting on December 21, 2025, 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-pollutant-discharge-elimination-
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.
Page 10 of 12
Permit NC0021504
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
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1
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 certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible 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].
Page 11 of 12
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