NC0069761_Fact Sheet_20221030

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FACT SHEET
EXPEDITED - PERMIT RENEWAL Sep2022
NCO069761 — WPCS Grade II
This form must be completed by Permit Writers for all expedited permits which do not require full Fact
Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks,
etc.) that can be administratively renewed with minor changes but can include facilities with more
complex issues (Special Conditions, 303(d) listed water, toxicity testing, instream monitoring,
compliance concerns).
Table 1 -- Basic Information for Expedited Permit Renewals
Permit Writer / Date
Joe R. Corporon, P.G. / 30Sep2O22
Permit Number
NCO069761
Facility Name /
Address:
Pond Creek WWTP /
364 Locust Ridge Road, Beech Mountain
Owner/Operator:
Town of Beech Mountain [a POTW]
Owner address:
510 Beech Mountain Pkwy
Beech Mountain, NC 28604-8012
Facility Contact:
Daniel Davis, Director of Utilities
Basin Name / Hydrological Unit
Watauga / 04-02-01
Receiving Stream
Pond Creek / IWC = 51 %
Stream Classification in Permit
C; Trout
Does permit need Daily Max NH3 limits?
No has limits
Does permit need TRC limits/language?
No has limits and language)
Does permit have toxicity testing?
Yes — Chronic, Limited
Does permit have Special Conditions?
Yes- Effluent Mercury analysis required
once (1) per permit cycle. Detected at 2.59 ng/L on
15Feb2022. No changes recommended.
Does permit have instream monitoring?
Yes - Dissolved Oxygen and Temperature
(Summer - Apr 1 — Oct 31)
Is the stream impaired [on 303(d) list]?
For whatparameter?
No
Any obvious compliance concerns?
No
Any permit modifications since last permit?
Yes. Updated Ammonia limits (see Data Review,
Correction)
New expiration date
30Sep2O27
Comments on Draft Permit
Updated eDMR text [A. (4.)] and WET text [A. (2.)].
Final permit
No changes from draft. No comments received.
Data Review
• 100% domestic wastes; no monitoring for metals; IWC = 5 1 %
• BIMS Discharge Summary - see attached database (Parameters Values Export).
• WET testing indicates all pass (last 13 Quarters), see attached.
• Compliance History — one (1) Enforcement for Ammonia (Apr2021); NOV for Ammonia
(002020); NOD for Ammonia and DO (Apr2021); Frequency NODs for DO, up and Down
steam (Apr202I; other "no action" frequency NODS (split week) BIMS calculation errors.

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Renewal - Ammonia Nitrogen (NH3 as N) - Limits Adjusted for Toxicity:
1. NH3 as N for this POTW was previously limited (June 2018) for summer at 2.6 mg/L
Monthly Average (MA) & 7.8 mg/L Weekly Average (WA). For winter as 6.6 mg/L
Monthly Average (MA) & 19.8 mg/L Weekly Average (WA), acute limits set at chronic
limits times three (3), in accord with NCAC Chapter 2, 2B .0505.
2. Considering toxicity, the Wasteload Allocation (WLA)] calculated chronic limits of
1.8 mg/L and 4.1 mg/L.
3. However, these chronic limits (MA) are judged unattainable and were revised
considering best available technology (BAT) to 2.0 mg/L and 4.1 mg/L. It follows
that the acute (WA) limits were revised therefore to 2.0 x 3 = 6.0 mg/L and 4.1 x 3 =
12.3 mg/L MA [see permit Table A. (L)].
PROPOSED SCHEDULE OF ISSUANCE
Draft Permit to Public Notice:
Permit Scheduled to Issue:
Effective Date
NPDES DIVISION CONTACT
12M2022
070ct2022 (est.)
O1Nov2022 (est.)
If you have questions about any of the above information, or on the attached permit, please email
Joe R. Corporon, P.G. [e-mail]].
NAME:
DATE: 30SEP2022
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.
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Renewal 2022 -- NPDES NCO069761
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Table 2. 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/l
(Dissolved)
Arsenic
340
150
69
36
Beryllium
65
6.5
---
---
Cadmium
Calculation
Calculation
40
8.8
Chromium III
Calculation
Calculation
---
---
Chromium VI
16
11
1100
50
Copper
Calculation
Calculation
4.8
3.1
Lead
Calculation
Calculation
210
8.1
Nickel
Calculation
Calculation
74
8.2
Silver
Calculation
0.06
1.9
0.1
Zinc
Calculation
Calculation
90
81
Table 2 Notes:
I. FW= Freshwater, SW= Saltwater
2. - = 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 213.0200 (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 3. 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, /1
Cadmium, Acute
WER*{1.136672-[ln hardness] (0.041838)} • e^{0.9151 [In hardness]-3.14851
Cadmium, Acute Trout waters
WER*{1.136672-[ln hardness] (0.041838){ • e^{0.9151[ln hardness] -3.623 61
Cadmium, Chronic
WER*{1.101672-[ln hardness] (0.041838)} • e^{0.7998[ln hardness] -4.445 11
Chromium III, Acute
WER*0.316 e^{0.8190[ln hardness]+3.7256}
Chromium III, Chronic
WER*0.860 e^{0.8190[ln hardness]+0.6848}
Copper, Acute
WER*0.960 e^{0.9422[ln hardness]-1.700}
Copper, Chronic
WER*0.960 e^{0.8545[ln hardness]-1.702}
Lead, Acute
WER*{1.46203-[ln hardness](0.145712)) • e^{1.273[ln hardness]-1.460)
Lead, Chronic
WER*{1.46203-[ln hardness](0.145712)) • e^{1.273[In hardness]-4.705)
Nickel, Acute
WER*0.998 e^{0.8460[ln hardness]+2.255)
Nickel, Chronic
WER*0.997 e^{0.8460[ln hardness]+0.0584)
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.
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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 1 Q 10 = 0.843 (s7Q 10, cfs) 1.991
• 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.
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)xs7Q10, cfs *Avg. Upstream Hardness, mg/L)
(Permitted Flow, cfs + s7Q10, cfs)
The Combined Hardness for acute is the same but the calculation uses the IQ 10 flow.
3. The permit writer converts the numeric standard for each metal of concern to a total recoverable metal, using
the EPA Default Partition Coefficients (DPCs) or site -specific translators, if any have been developed using
federally approved methodology.
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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 + { [Kr.] [ss(i+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 = (s7010 + Owl (Cwas) — (s7010) (Cb
Qw
Where: Ca = allowable effluent concentration (µg/L or mg/L)
Cwqs = NC Water Quality Standard or federal criteria (µg/L or mg/L)
Cb = background concentration: assume zero for all toxicants except NH3* (µg/L or mg/L)
Qw = permitted effluent flow (cfs, match s7Q10)
s7Q10 = summer low flow used to protect aquatic life from chronic toxicity and human health through
the consumption of water, fish, and shellfish from noncarcinogens (cfs)
* Discussions are on -going with EPA on how best to address background concentrations
Flows other than s7Q 10 may be incorporated as applicable:
1 Q 10 = used in the equation to protect aquatic life from acute toxicity
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
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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:
Table 4
Parameter
Value
Comments Data Source
Average Effluent Hardness (mg/L)
N/A
No metals monitored
[Total as, CaCO3 or (Ca+Mg)]
Average Upstream Hardness (mg/L)
N/A
[Total as, CaCO3 or (Ca+Mg)]
7Q10 summer (cfs)
N/A
1Q10 (cfs)
N/A
Permitted Flow (MGD)
N/A
0.400
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NH3/TRC WLA Calculations
Facility: Town of Beech Mtn - Pond Creek WWTP
Permit No. NC0069761
Prepared By: Joe Corporon, 31Aug2022
Enter Design Flow (MGD): 0.40
Enter s7Q10 (cfs): 0.60
Enter w7Q10 (cfs): 0.90
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/1)
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/1)
s7Q10 (CFS)
0.6
s7Q10 (CFS)
0.6
DESIGN FLOW (MGD)
0.4
DESIGN FLOW (MGD)
0.4
DESIGN FLOW (CFS)
0.62
DESIGN FLOW (CFS)
0.62
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/1)
0
Upstream Bkgd (mg/1)
0.22
IWC (%)
50.82
IWC (%)
50.82
Allowable Conc. (ug/1)
33
Allowable Conc. (mg/1)
1.8
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
Fecal Coliform
w7Q10 (CFS)
0.9
Monthly Average Limit:
200/100mI DESIGN FLOW (MGD)
0.4
(If DF >331; Monitor)
DESIGN FLOW (CFS)
0.62
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF)
1.97 Upstream Bkgd (mg/1)
0.22
IWC (%)
40.79
Allowable Conc. (mg/1)
4.1
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)

DocuSign Envelope ID: 2CB3BCA9-5A77-4EE5-A3AC-BF1 1 A0937147
Water Resources
ENVIRONMENTAL QUALITY
June 8, 2018
Mr. Robert Heaton
Public Utilities Director
403 Beech Mountain Parkway
Beech Mountain, NC 28604
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
Subject: Issuance of NPDES Permit NCO069761
Pond Creek WWTP
Watauga County
Class WW-2
Dear Mr. Heaton:
Division personnel have reviewed and approved your application for renewal of the subject permit.
This permit renewal is issued pursuant to the requirements of North Carolina General Statute 143-215.1
and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated October 15, 2007 (or as subsequently amended).
This final permit includes no significant changes from the draft permit previously sent to
you on April 18, 2018.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings
(6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this
decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain any other Federal, State, or Local governmental permit that may be required. If you
have any questions concerning this permit, please contact Charles H. Weaver at telephone number (919)
807-6391.
Since ely,
Linda Culpepper
Interim Director, Division of Water Resources
cc: Central Files
NPDES files
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh, NC 27699-1617
919 807 6300 919-807-6389 FAX
https:lldeq.nc.govlaboutldivisionslwater-resourceslwater-resources-permitslwastewater-branchlnpdes-wastewater-permits

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Permit NCO069761
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 provision 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 Beech Mountain
is hereby authorized to discharge wastewater from a facility located at the
Pond Creek WWTP
364 Locust Ridge Road
Beech Mountain
Watauga County
to receiving waters designated as Pond Creek in subbasin 04-02-01 of the Watauga
River Basin in accordance with effluent limitations, monitoring requirements, and
other conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective July 1, 2018.
This permit and authorization to discharge shall expire at midnight on September 30, 2022.
Signed this day June 8, 2018
By Authority of the Environmentai ivianagemem Commission
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Permit NCO069761
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.
The Town of Beech Mountain
is hereby authorized to:
1. Continue operation of an existing 0A MGD contact stabilization wastewater
treatment system that includes the following components;
♦ Polyethylene mixing/ feed tank with mixer
♦ Chemical feed pumps with analog control
♦ pH meter system
♦ Influent flow meter
♦ Inverter motors
♦ Influent screening
♦ Ultraviolet disinfection
♦ Sludge drying beds
This facility is located at the Pond Creek WWTP (364 Locust Ridge Road, Beech
Mountain) in Watauga County.
2. Discharge from said treatment works at the location specified on the attached map
into Pond Creek (Stream Index 8-20-2), a waterbody currently classified C-Trout
waters in sub -basin 04-02-01 (HUC 0601010303) the Watauga River Basin.
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Permit NCO069761
PART I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration,
the Permittee is authorized to discharge via Outfall 001. Such discharges shall be limited
and monitored' by the Permittee as specified below:
PARAMETER.
-LIMITS
,MONITORING, REQUIREMENTS
[PCS Code]
Weekly,
Daily
Meaurement
aleMonthly
Sample Location2
Average
Average`_
Maximum
Frequency .
Type�-
Flow [500501
0.4 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-day (20°C)3
30.0 mg/L 45.0 mg/L
Weekly
Composite
Influent & Effluent
[00310]
Total Suspended Sohds3 -
30.0 mg/L 45.0 mg/L
Weekly
Composite
Influent & Effluent
[00530]
NH3 as N [00610]
2.6 mg/L 7 8 mg/L
2/Month
Composite
Effluent
April 1— October 31
NH3 as N [00610]
6.6 mg/L 19.8 mg/L
2/Month
Composite
Effluent
(November 1 — March 30
Dissolved Oxygen4 [50050]
Daily average > 5.0 mg/L
—
Weekly
Grab
Effluent,
(April 1 — October 31
Weekl
Grab
U & D
Oxygen [500501
.Dissolved
Fecal Coliform [316161
200/100 mL
400/100 mL
Weekly
:
Grab
Effluent
geometric mean)
—
Total Residual Chlorines
28 pg/L
2/Week
Grab
Effluent
[50060]
Temperature (OC) [00010]
Daily
Grab
Effluent
Temperature (OC) [00010]
Weekly
Grab
U & D
Total Mercury6 [COMER]
1/Permit
Grab
Effluent
Total Nitrogen [00600]
Semi -Annually
Composite
Effluent
NO2+NO3+TKN
Total Phosphorus [006651
Semi -Annually
Composite
Effluent
Chronic Toxicity? [TGP3B] -
Quarterly
Composite
Effluent
pH [00400)
> 6.0 and
< 9.0 standard
units
Weekly
Grab
Effluent
Notes:
1. The permittee shall submit discharge monitoring reports electronically using the NC
DWR's eDMR application system [see Section A. (4)].
2. U: upstream at least 100 feet above the outfall. D: downstream at least300 feet below the
outfall.
3. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed
15% of the respective influent value (85% removal).
4. The Division shall consider all effluent TRC values reported below 50 µg/L 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 µg/L.
5. Total Mercury must be sampled once during the permit cycle [see A. (3)].
6. Chronic Toxicity (Ceriodaphnia) P/F at 51%; January, April, July, and October [see A. (2)].
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Permit NCO069761
There shall be no discharge of floating solids or visible foam in other than trace amounts.
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Permit NC0069761
A. (2) 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 51%.
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 on
the Effluent Discharge Monitoring Form (MR-1) 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
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
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"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. (3) EFFLUENT MERCURY ANALYSIS
[G.S. 143-215.66]
The Permittee shall provide one effluent mercury analysis, using EPA method 1631 E,
in conjunction with the next permit renewal application. The sample should be taken
within 12 months prior to the application date. Any additional effluent mercury
measurements conducted from the effective date of this permit and up to the
application date shall also be submitted with the renewal application.
If the result of the mercury analysis is not provided with the application, the
application may be returned- as incomplete and the Permittee considered non-
compliant.
A. (4) 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
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• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Reporting
Records Retention
Monitoring Reports
1. Reporting [Supersedes Section D (2.) and Section E. (5.) (all
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. 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.
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).
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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:
http: / / www2. epa. gov/ compliance / final-national-pollutant-discharge-elimination-
system-npde s-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:
https://deq.nc.gov/about/divisions/water-resources/edmr -
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes
Section B. (11.) (d11
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
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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].
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