20070812 Ver 2_NPDES Permit_20080222

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rvuuidei r. casiey, uovernor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
Mr. Mark J. Gross
Alcoa, Inc. - Badin Works
P.O. Box 576
Badin, North Carolina 28009-0576
February 22, 2008
Subject: NPDES Permit Issuance
Permit No. N00004308
Alcoa - Badin Works
Stanly County
Dear Mr. Gross:
The Division of Water Quality is. forwarding herewith the NPDES permit for Alcoa's Badin Works,
modified as stipulated in the Settlement Agreement executed today (06 EHR 1883). This permit 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 May 9,1994, as amended.
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 a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division of Water
Quality. The Division may require modification or revocation and reissuance of the permit. This
permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act, or
any other federal or local governmental permit.
If you have any questions concerning the final permit, please contact Mike. Templeton at (919) 733-
5083, extension 541, or at [e-mail].
Sincerely,
OColeen H. Sullins
Enclosure: NPDES Permit N00004308 - Final (Settlement)
Copies (w/ encl.): Mr. Z. T. (Tommy) Gibson, Jr. Alcoa- Badin Works
Mr. Larry McCaskill - Alcoa - Badin Works
Chief, NPDES and Biosolids Permits Section, Region IV, EPA
Mooresville Regional Office, Surface Water Protection
Technical Assistance and Certification Unit
Aquatic Toxicity Unit
Central Files
NPDES Files
uivision of Water Quality, Point Source Branch Telephone [phone]
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http.//h`o.enrstate.nc.usl
An Equal Opportunity/Affirmative Action Employer
NorthCarolina
JVaturally
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STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
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,
Alcoa Inc.
is hereby authorized to discharge wastewater from a facility located at the
Alcoa - Badin Works
NC Hwy. 740 & NCSR 1719
Stanly County
to receiving waters designated as Little Mountain Creek and Badin Lake (Yadkin River) in the Yadkin - Pee
Dee River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II,
III, and IV of this permit.
This permit shall become effective .........................................................................................................March 1, 2008
This permit and the authorization to discharge shall expire at midnight on ........................... February 28, 2013
Signed this day ..................... February 22, 2008
Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management
Commission
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SUPPLEMENT TO PERMIT COVER SHEET
The authority to operate and discharge from this facility arises exclusively under the terms and conditions of this
NPDES Permit. Therefore, upon the effective date of this permit, any and all previous NPDES Permits issued for
this facility and bearing this permit number are revoked.
Alcoa Inc.
is hereby authorized to:
1. Discharge the following:
• non-contact cooling and make-up waters, condensate, fire protection water, groundwater, and
stormwater at Outfall 002/SO2;
• non-contact cooling and make-up waters, condensate, fire protection water, groundwater, and
stormwater at Outfall 004/SO4;
• non-contact cooling water, condensate, fire protection water, groundwater, and stormwater at
Outfall 005 /SO5;
• non-contact cooling water, condensate, fire protection water, groundwater, and stormwater at
Outfall 012/S12 (and at Outfa11011/S11 when flows exceed the capacity of the diffuser);
• groundwater and stormwater at Outfall 013;
• groundwater seepage from the Old Brick Landfill and stormwater at Outfall 019/S19; and
• stormwater at Outfalls 017, 018, and 020;
all outfalls being located at or near the Alcoa - Badin Works in Stanly County; and
2. Discharge such process and ancillary process wastewaters, groundwater, and stormwater from locations
specified on the attached map into an unnamed tributary to Little Mountain Creek (Outfalls 004/SO4,
005/SO5, 017, and 018) and into Badin Lake (Yadkin River) (Outfalls 002/S02, 011/Sll, 012/S12, 013,
019/S19, 020) which are classified as Class "C waters and Class "WS-IV CA & B" waters, respectively, in
the Yadkin-Pee Dee River Basin.
All discharges shall be in accordance with the attached schedules as follows:
Part L• Monitoring, Controls, and Limitations for Permitted Discharges
A. Effluent Limitations and Monitoring Requirements
B. Stormwater Management
C. Special Conditions
Part II: Standard Conditions for NPDES Permits
Part III: Other Requirements
Part IV: Special Conditions for Municipal Facilities
Any other point source discharge to surface waters of the state is prohibited unless covered by another
permit, authorization, or approval.
This permit does not relieve the Permittee from responsibility for compliance with any other applicable
federal, state, or local law, rule, standard, ordinance, order, judgment, or decree.
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PART I
MONITORING, CONTROLS, AND LIMITATIONS FOR PERMITTED DISCHARGES
SECTION A - EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is
authorized to discharge wastewater and stormwater associated with the activities described in its current
NPDES permit application. Such discharges shall be monitored, controlled, and limited as specified below.
A.M) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 002602
During the period beginning on the effective date of this permit and lasting until the expiration date of this
permit, the Permittee is authorized to discharge non-contact cooling and make-up waters, condensate, fire
protection waters, groundwater, and stormwater at Outfall 002/S02 subject to the following effluent
limitations and monitoring requirements:
(a.) Outfall 002. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge contains any amount of non-contact cooling and make-up
waters, condensate, fire protection waters, or groundwater.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily . Measurement Sample Sample
Average Average Maximum Frequency Type Location'
Flow Weekly Instantaneous E
Total Suspended Solids 30.0 mg/L 60.0 mg/L 2/Month Composite 2 E

pH Shall remain within the range of 6.0 to
2/Month
Grab
E
9.0 standard units at all times
Temperature (°C) 2/Month Grab E
Total,Fluoride Monthly Composite z E
Total Residual Chlorine Monthly Grab E
Acute Toxicity s Quarterly Composite 2 E
(b) Outfall S02. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge consists entirely of stormwater.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency 4 Type Location'
Flow Semi-Annually Instantaneous E
Total Suspended Solids Semi-Annually Grab E
pH Semi-Annually Grab E
Total Fluoride Semi-Annually Grab E
Footnotes, A.(1.)
1. Sample locations: E - Effluent.
2. The Permittee may use time-proportionate compositing or other sampling method provided that the alternate
method yields samples that are reasonably representative of the discharge during the monitoring period.
3. Acute Toxicity (Fathead Minnow) 24 hr. P/F @ 90%; quarterly (January-March, April-June, July-September, and
October-December); see Condition C.(2.), Acute Toxicity Permit Limit.
4. Monitoring should be performed during a representative storm event. See Condition B. (2.), Stormwater
Definitions. Semi-annual means 2/Year, during January-June and July-December.
PART I, Page 1 of 18
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A.(2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 004/S04
During the period beginning on the effective date of this permit and lasting until the expiration date of this
permit, the Permittee is authorized to discharge non-contact cooling and make-up waters, condensate, fire
protection waters, groundwater, and stormwater at Outfall 004/S04 subject to the following effluent
limitations and monitoring requirements:
(a.) Outfall 004. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge contains any amount of non-contact cooling and make-up
waters, condensate, fire protection waters, or groundwater.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly . Daily Measurement Sample Type Sample
Average Average Maximum Frequency Location
Flow Weekly Instantaneous E
Total Residual Chlorine 2 17 ug/L Weekly Grab E
Total Suspended Solids 2/Month Composite 3 E
pH Shall remain within the range of 6.0 to 2/Month Grab E
9.0 standard units at all times
Temperature (0C) See Footnote 4 2/Month Grab E
Total Aluminum Monthly Composite 3 E
Total Cyanide Monthly Composite 3 E
Total Fluoride Monthly Composite 3 E
Temperature (°C) See Footnote 4 Quarterly Grab U,D
(b.) Outfall SO4. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge consists entirely of stormwater.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement Sample
a Sample Type
'
Average Average Maximum Location
Frequency
Flow Semi-Annually Instantaneous E
Total Suspended Solids Semi-Annually Grab E
pH Semi-Annually Grab E
Total Aluminum Semi-Annually Grab E
Total Cyanide Semi-Annually Grab E
Total Fluoride Semi-Annually Grab E
(c.) The Permittee shall obtain authorization from the Division of Water Quality prior to utilizing any
biocide in the cooling water. THERE SHALL BE NO CHROMIUM, ZINC, OR COPPER ADDED TO
THE COOLING WATER EXCEPT IN THE FORM OF PRE-APPROVED ADDITIVES TO BIOCIDAL
COMPOUNDS. See Condition C.(5.), Biocides.
Footnotes, A.(2.)
1. Sample locations: E - Effluent, U - Upstream, D - Downstream.
2. The Total Residual Chlorine limit shall become effective on November 1, 2008. The Division may re-open the
final effluent limit based upon the results of a site-specific Method Detection Limit (MDL) study that Alcoa
intends to conduct.
3. The Permittee may use time-proportionate compositing or other sampling method provided that the alternate
method yields samples that are reasonably representative of the discharge during the monitoring period.
4. The discharge shall not cause the temperature of the receiving water to exceed 2.8°C above background and in
no case exceed 32°C.
5. Monitoring should be performed during a representative storm event. See Condition B. (2.), Stormwater
Definitions. Semi-annual means 2/Year, during January-June and July-December.
PART I, Page 2 of 18
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A.(3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 005/S05
During the period beginning on the effective date of this permit and lasting until the expiration date of this
permit, the Permittee is authorized to discharge non-contact cooling water, condensate, fire protection
waters, groundwater, and stormwater at Outfall 005/S05 subject to the following effluent limitations and
monitoring requirements:
(a.) Outfall 005. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge contains any amount of non-contact cooling water,
condensate, fire protection waters, groundwater, or compressor condensate.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location'
Flow Weekly Instantaneous E
Total Suspended Solids 30.0 mg/L 60.0 mg/L 2/Month Composite 2 E
Temperature (°C) See Footnote 4 2/Month Grab E
pH Shall remain within the range of 6.0 to 2/Month Grab E
9.0 standard units at all times
Total Aluminum Monthly Composite 2 E
Total Fluoride Monthly Composite 2 E
Total Cyanide Monthly Grab E
Total Residual Chlorine Monthly Grab E
Chronic Toxicity 3 Quarterly Composite 2 E
(b.) Outfall S05. The following effluent limitations and monitoring requirements shall apply during any
, calendar month in which the discharge consists entirely of stormwater.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency s Type Location'
Flow Semi-Annually Instantaneous E
Total Suspended Solids Semi-Annually Grab E
Total Aluminum Semi-Annually Grab E
Total Fluoride Semi-Annually Grab E
Total Cyanide Semi-Annually Grab E
pH Semi-Annually Grab. E
(c.) The Permittee shall obtain authorization from the Division of Water Quality prior to utilizing any
biocide in the cooling water. THERE SHALL BE NO CHROMIUM, ZINC, OR COPPER ADDED TO
THE COOLING WATER EXCEPT IN THE FORM OF PRE-APPROVED ADDITIVES TO BIOCIDAL
COMPOUNDS. See Condition C.(5.), Biocides.
(d.) The Division may re-open this permit to modify these effluent limitations and monitoring
requirements if monitoring results indicate that the discharge has a reasonable potential to impact
receiving water quality.
Footnotes, A.(3.)
1. Sample locations: E - Effluent.
2. The Permittee may use time-proportionate compositing or other sampling method provided that the alternate
method yields samples that are reasonably representative of the discharge during the monitoring period.
3. Chronic Toxicity (Ceriodaphnia) P/F at 90%; quarterly (January-March, April-June, July-September, and
October-December); see Condition C.(1.) , Chronic Toxicity Permit Limit.
4. The discharge shall not cause the temperature of the receiving water to exceed 2.8°C above background and in
no case exceed 32°C. U,D monitoring for Outfall 004 shall be used to determine temperature changes at 004/005.
5. Monitoring should be performed during a representative storm event.. See Condition B. (2.), Stormwater
. Definitions. Semi-annual means 2/Year, during January-June and July-December.
PART I, Page 3 of 18
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A.(4.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfa11011/Sif
(a.) During the period beginning on the effective date of this permit and lasting until the expiration date of
this permit, the Permittee is authorized to discharge storm flows exceeding the Outfall 012 diffuser
capacity at Outfall 011 subject to the following effluent limitations and monitoring requirements:
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement Sample Sample
Average Averages Maximum Frequency Type Location'
Flow Quarterly Instantaneous E
Total Fluoride Quarterly Grab E
Total Cyanide 3.4 46.6 ug/L Quarterly Grab E
Oil & Grease Quarterly Grab E
Total Suspended Solids Quarterly Grab E

pH Shall remain within the range of 6.0 to
Quarterly
Grab
E
9.0 standard units at all times
Acute Toxicity See Footnotes 5,6 Annually Grab E
(b.) Outfall S11. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge consists entirely of stormwater exceeding the Outfall 012
diffuser capacity.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement Sample
7 Sample Type
'
Average Average Maximum Frequency
Location
Flow Semi-Annually Instantaneous E
Total Suspended Solids Semi-Annually Grab E
Oil & Grease Semi-Annually Grab E
Total Aluminum Semi-Annually Grab E
Total Cyanide Semi-Annually Grab E
Total Fluoride Semi-Annually Grab E
pH Semi-Annually Grab E
Footnotes, A.(4.) :
1. Sample locations: E - Effluent.
2. For the purposes of this permit, a minimum of one sample in a calendar week shall be sufficient to determine a
parameter's "Weekly Average" value.
3. The Total Cyanide limit shall become effective on November 1, 2009.
4. The Permittee shall report on its Discharge Monitoring Reports the actual laboratory results for each effluent
sample tested. However, for the purpose of compliance with this permit, the quantitation limit for Total Cyanide
shall be defined as 10 ug/L, and the Division shall treat each reported value less than 10 ug/L as zero.
5. Monitoring for the annual toxicity test should coincide with that for one of the four quarterly cyanide tests.
6. Acute Toxicity (Fathead Minnow) monitoring, definitive; annual; see Condition C.(4.), Acute Toxicity
Monitoring. If any annual toxicity test demonstrates toxicity ( LC-50 reported less than 100 %), testing shall
increase to quarterly. If five (5) consecutive quarterly tests demonstrate no toxicity (LC-50 > 100%), testing shall
revert to annually. Effluent may be filtered through a 2-4 mm mesh prior to testing.
7. Monitoring for these parameters should be performed during a representative storm event. See Condition B. (2.),
Stormwater Definitions.
PART I, Page 4 of 18
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A.(5.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 012/S12
During the period beginning on the effective date of this permit and lasting until the expiration date of this
permit, the Permittee is authorized to discharge non-contact cooling water, condensate, fire protection
waters, groundwater, and stormwater at Outfall 012/S12 subject to the following effluent limitations and
monitoring requirements:
(a.) Outfall 012. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge contains any amount of non-contact cooling water,
condensate, fire protection waters, or groundwater.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location'
Flow Weekly Instantaneous E
Total Suspended Solids 30.0 mg /L 60.0 mg/L 2/Month Composite 2 E
Oil & Grease 30.0 mg/L 60.0 mg/L 2/Month Grab E
Total Cyanide 3 434.0 ug/L 2/Month Grab E
pH Shall remain within the range of 6.0 to 2/Month Grab E
9.0 standard units at all times
Total Aluminum Monthly Composite 2 E
Total Fluoride Monthly Composite 2 E
Total Residual Chlorine Monthly Grab E
Chronic Toxicity 4 Quarterly Composite 2 E
(b.) Outfall S12. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge consists entirely of stormwater.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement Sample
Sample Type
'
Average Average Maximum Frequency s
Location
Flow Semi-Annually Instantaneous E
Total Suspended Solids Semi-Annually Grab E
Oil & Grease Semi-Annually Grab E
Total Aluminum Semi-Annually Grab E
Total Fluoride Semi-Annually Grab E
Total Cyanide Semi-Annually Grab E
pH Semi-Annually Grab E
Footnotes, A.(5.) :
1. Sample locations: E - Effluent.
2. The Permittee may use time-proportionate compositing or other sampling method provided that the alternate
method yields samples that are reasonably representative of the discharge during the monitoring period.
3. The Permittee shall report on its Discharge Monitoring Reports the actual laboratory results for each effluent
sample tested. However, for the purpose of compliance with this permit, the quantitation limit for Total Cyanide
shall be defined as 10 ug/L, and the Division shall treat each reported value less than 10 ug/L as zero.
4. Chronic Toxicity (Ceriodaphnia) P/F at 16%; quarterly (January-March, April-June, July-September, and
October-December); see Condition C.(1.), Chronic Toxicity Permit Limit.
5. Monitoring for these parameters should be performed during a representative storm event. See Condition B. (2.),
Stormwater Definitions.
PART I, Page 5 of 18
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A.(6.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 013
(a.) During the period beginning on the effective date of this permit and lasting until the expiration date of
this permit, the Permittee is authorized to discharge groundwater and stormwater at Outfall 013
subject to the following effluent limitations and monitoring requirements:
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily
Average Average z Maximum Measurement
Frequency
Sample Type Sample
Location'
Flow Weekly Instantaneous E
Total Suspended Solids 30.0 mg/L 60.0 mg/L 2/Month Composite 3 E
Total Fluoride 4 1.8 mg/L 2/Month Composite 3 E
Total Cyanide 2/Month Grab E
pH Shall remain within the range of 6.0 to 2/Month Grab E
9.0 standard units at all times.
Total Aluminum Monthly Composite 3 E
Acute Toxicity See Footnote 5 Quarterly Composite 3 E
(b.) The Division may re-open this permit to modify these effluent limitations and monitoring
requirements if monitoring results indicate that the discharge has a reasonable potential to impact
receiving water quality or that this discharge consists of uncontaminated stormwater.
Footnotes, A.(6.) :
1. Sample locations: E - Effluent.
2. For the purposes of this permit, a minimum of one sample in a calendar week shall be sufficient to determine a
parameter's "Weekly Average" value.
3. The Permittee may use time-proportionate compositing or other sampling method provided that the alternate
method yields samples that are reasonably representative of the discharge during the monitoring period.
4. The Total Fluoride limits shall become effective on November 1, 2009.
5. Acute Toxicity (Fathead Minnow) 24 hr. P/F Q 90%; quarterly (January-March, April-June, July-September, and
October-December); see Condition C.(2.), Acute Toxicity Permit Limit.
PART I, Page 6 of 18
Permit No. N00004308
A.(7.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 019/S19
During the period beginning on the effective date of this permit and lasting until the expiration date of this
permit, the Permittee is authorized to discharge groundwater seepage from the Old Brick Landfill and ..
stormwater at Outfall 019/S19 subject to the following effluent limitations and monitoring requirements:
(a.) Outfa11019. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge contains any amount of groundwater seepage from the Old
Brick Landfill.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement
Sample Type Sample
'
Average Average Maximum Frequency Location
Flow Quarterly Instantaneous E
Total Suspended Solids Quarterly Grab E
Total Aluminum Quarterly Grab E
Total Fluoride Quarterly Grab E
Total Cyanide Quarterly Grab E

pH Shall remain within the range of 6.0 to
Quarterly
Grab
E
9.0 standard units at all times
Acute Toxicity 2 Quarterly Grab E
(b.) Outfall S19. The following effluent limitations and monitoring requirements shall apply during any
calendar month in which the discharge consists entirely of stormwater. The Division may re-open this
permit to modify these effluent limitations and monitoring requirements if monitoring results indicate
that the discharge has a reasonable potential to impact receiving water quality.
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER Monthly Weekly Daily Measurement Sample
3 Sample Type
Average Average Maximum Frequency
Location'
Flow . Semi-Annually Instantaneous E
Total Suspended Solids Semi-Annually Grab E
Total Aluminum Semi-Annually Grab E
Total Fluoride Semi-Annually Grab E
Total Cyanide Semi-Annually Grab E
pH Semi-Annually Grab E
Footnotes, A.(7.) :
1. Sample locations: E - Effluent.
2. Acute Toxicity (Fathead Minnow) monitoring, definitive; quarterly (January-March, April-June, July-September,
and October-December); see Condition C.(3.), Acute Toxicity Monitoring.
3. Monitoring for these parameters should be performed during a representative storm event. See Condition B. (2.),
Stormwater Definitions.
PART I, Page 7 of 18
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A.(8.) STORMWATER MONITORING REQUIREMENTS - Outfalls 017, 018, & 020
(a.) During the period beginning on the effective date of this permit and lasting until the expiration date of
this permit, the Permittee is authorized to discharge stormwater at Outfalls 017, 018, and 020 subject
to the following effluent limitations and monitoring requirements:
(i.) Analytical Monitoring:
- MONITORING REQUIREMENTS

STORMWATER DISCHARGE
UNITS
CUT-OFF
I
Measurement
Sample
T
Sample
-
CHARACTERISTICS CONCENTRATION Frequency' Type Location z
Total Flow MG N/A Annual Footnote 3 SDO
Total Rainfall inches N/A Annual Footnote 3 N/A
Event Duration minutes N/A Annual Footnote 3 N/A
Total Suspended Solids mg/L N/A Annual Grab SDO
COD mg/L N/A Annual Grab SDO
Total Aluminum mg/L N/A Annual Grab SDO
Total Cyanide mg/L N/A Annual Grab SDO
Total Fluoride mg/L N/A Annual Grab SDO
(ii.) Visual and Other Monitoring:
Visual monitoring requires a qualitative visual inspection of each stormwater outfall, regardless
of representative outfall status, for the purpose of evaluating the effectiveness of the Stormwater
Pollution Prevention Plan (SPPP) and assessing. new sources of stormwater pollution. All visual
monitoring shall be documented and records maintained with the SPPP. No analytical tests are
required. Visual monitoring of stormwater outfalls does not need to be performed during a
representative storm event, but must be performed at all discharge outfall locations.
Documentation of the initial visual monitoring event during the term of the permit shall be
submitted along with the required analytical monitoring data.
MONITORING REQUIREMENTS
STORMWATER DISCHARGE Measurement Sample Sample
CHARACTERISTICS Frequency' Types Location e
Color Annual Visual SDO.
Odor Annual Olfactory SDO
Clarity Annual Visual SDO
Floating Solids Annual Visual SDO
Suspended Solids Annual Visual SDO
Foam Annual Visual SDO
Oil Sheen Annual Visual SDO
Other obvious indicators of Annual Visual SDO
stormwater pollution
(b.) For purposes of the stormwater sampling required in this permit, all samples shall be collected from a
discharge resulting from a representative storm event (See Part I, Condition B.(2.), Stormwater
Definitions). Failure to monitor storm events in accordance with the specified frequency shall
constitute a violation of this permit.
PART I, Page 8 of 18
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Footnotes, A.(8.) :
1. Monitoring Frequency (Analytical): Once per year with samples taken during the sampling window of April
through November.
2. Sample locations (Analytical): SDO - Samples to be taken at each stormwater discharge outfall (SDO) unless
representative outfall status is granted. If a facility has multiple discharge locations with substantially identical
stormwater discharges that are required to be sampled, the Permittee may petition the Director for
representative outfall status. If it is established that the stormwater discharges are substantially identical and the
Permittee is granted representative outfall status, then sampling requirements may be performed at a reduced
number of outfalls.
3. For each sampled representative storm event the total precipitation, storm duration, and total flow must be
monitored. Total flow shall be either; (a) measured continuously, (b) calculated based on the amount of area
draining to the outfall, the amount of built-upon (impervious) area, and the total amount of rainfall, or (c)
estimated by the measurement of flow at 20-minute intervals during the rainfall event.
4. Monitoring Frequency (Visual and Other): The first visual monitoring event during the term of the permit must
be performed during the initial analytical monitoring event.
5. Sample Type and Location (Visual and Other): Visual monitoring requires a qualitative visual observation of
each Stormwater Discharge Outfall (SDO). No analytical testing or sampling is required.
PART I, Page 9 of 18
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SECTION B - STORMWATER MANAGEMENT REQUIREMENTS
B.(1.) STORMWATER POLLUTION PREVENTION PLAN
The Permittee shall update on an annual basis a Stormwater Pollution Prevention Plan, herein after referred
to as the Plan. This Plan shall be considered public information in accordance with Part II, Standard
Conditions, of this permit. The Plan shall include, at a minimum, the following items:
(a.) Site Plan. The site plan shall provide a description of the physical facility and the potential pollutant
sources which may be expected to contribute to contamination of stormwater discharges. The site
plan shall contain the following:
(i.) A general location map (USGS quadrangle map or appropriately drafted equivalent map),
showing the facility's location in relation to transportation routes and surface waters, the name
of the receiving water(s) to which the stormwater outfall(s) discharges, or if the discharge is to a
municipal separate storm sewer system, the name of the municipality and the ultimate receiving
waters; and accurate latitude and longitude of the point(s) of discharge.
(ii.) A narrative description of storage practices, loading and unloading activities, outdoor process
areas, dust or particulate generating or control processes, and waste disposal practices.
(iii.) A site map drawn to scale with the distance legend indicating location of industrial activities
(including storage of materials, disposal areas, process areas and loading and unloading areas),
drainage structures, drainage areas for each outfall and activities occurring in the drainage area,
building locations and impervious surfaces, and the percentage of each drainage area that is
impervious. For each outfall, a narrative description of the potential pollutants which could be
expected to be present in the stormwater discharge.
(iv.) A list of significant spills or leaks of pollutants that have occurred at the facility during the 3
previous years and any corrective actions taken to mitigate spill impacts.
(v.) Certification that the stormwater outfalls have been evaluated for the presence of non-
stormwater discharges. The certification statement will be signed in accordance with the
requirements found in Part II, Standard Conditions, of this permit.
(b.) Stormwater Management Plan. The stormwater management plan shall contain a narrative
description of the materials management practices employed which control or minimize the exposure
of significant materials to stormwater, including structural and nonstructural measures. The
stormwater management plan, at a minimum, shall incorporate the following:
(i.) A study addressing the technical and economic feasibility of changing the methods of operations
and/or storage practices to eliminate or reduce exposure of materials and processes to
stormwater. Wherever practicable the Permittee shall cover all storage areas, material handling
operations, manufacturing or fueling operations to prevent materials exposure to stormwater.
In areas where elimination of exposure is not practicable, the stormwater management plan shall
document the feasibility of diverting the stormwater runoff away from areas of potential
contamination.
(ii.) A schedule to provide secondary containment for bulk storage of liquid materials, storage of
Section 313 of Title III of the Superfund Amendments and Reauthorization Act (SARA) water
priority chemicals, or storage of hazardous materials to prevent leaks and spills from
contaminating stormwater runoff. If the secondary containment devices are connected directly
to stormwater conveyance systems, the connection shall be controlled by manually activated
valves or other similar devices [which shall be secured with a locking mechanism] and any
stormwater that accumulates in the containment area shall be at a minimum visually observed
for color, foam, and visible sheens, prior to release of the accumulated stormwater.
Accumulated stormwater shall be released if found to be uncontaminated. Records
documenting the individual making the observation, the description of the accumulated
stormwater and the date and time of the release shall be kept for a period of five years.
(iii.) A narrative description shall be provided of Best Management Practices (BMPs) to be considered
such as, but not limited to, oil and grease separation, debris control, vegetative filter strips,
infiltration and stormwater detention or retention, where necessary. The need for structural
PART I, Page 10 of 18
L.V VV'iJVU
I CLII LII IN V. IN
BMPs shall be based on the assessment of potential of sources to contribute significant quantities
of pollutants to stormwater discharges and data collected through monitoring of stormwater
discharges.
(iv.) Inspection schedules of stormwater conveyances and controls and measures to be taken to limit
or prevent erosion associated with the stormwater systems.
(c.) Spill Prevention and Response Plan. The Spill Prevention and Response Plan shall incorporate a risk
assessment of potential pollutant sources based on a materials inventory of the facility. The facility
personnel (or team) responsible for implementing the plan shall be identified in the plan. At least one
of these designated personnel shall be on-site or available at all times during facility operations that
have the potential to contaminate stormwater runoff through spills or exposure of materials associated
with the facility operations.
(d.) Preventative Maintenance and Good Housekeeping Program. A preventative maintenance program
shall be developed. The program shall document schedules of inspections and maintenance activities
of stormwater control systems, plant equipment and systems. Inspection of material handling areas
and regular cleaning schedules of these areas shall be incorporated into the program.
(e.) Employee Training. Training schedules shall be developed and training provided at a minimum on
an annual basis on proper spill response and cleanup procedures and preventative maintenance
activities for all personnel involved in any of the facility's operations that have the potential to
contaminate stormwater runoff. The facility personnel (or team) responsible for implementing the
training shall be identified in the Plan.
(f.) Designated Personnel. The Stormwater Pollution Prevention Plan shall identify one or more specific
positions responsible for the overall coordination, development, implementation, and revision to the
Plan. Responsibilities for all components of the Plan shall be documented and position assignments
provided.
(g.) Plan Amendment. The Permittee shall amend the Plan whenever, there is a change in design,
construction, operation, or maintenance which has a significant effect on the potential for the
discharge of pollutants to surface waters. The Stormwater Pollution Prevention Plan shall be
reviewed and updated on an annual basis.
The Director may notify the Permittee when the Plan does not meet one or more of the minimum
requirements of the permit. Within 30 days of such notice, the Permittee shall submit a time schedule
to the Director for modifying the Plan to meet minimum requirements. The Permittee shall provide
certification in writing (in accordance with Part II, Standard Conditions, of this permit) to the Director
that the changes have been made.
(h.) Facility Inspections. Inspections of the facility and all stormwater systems shall occur at a minimum
on a semiannual schedule, once in the fall (September-November) and once during the spring (April-
June). The inspection and any subsequent maintenance activities performed shall be documented,
recording date and time of inspection, individual(s) making the inspection and a narrative description
of the facility's stormwater control systems, plant equipment and systems. Records of these
inspections shall be incorporated into the Stormwater Pollution Prevention Plan.
Visual monitoring as required in Part I, Condition A.(9.), Stormwater Requirements (Outfalls 017, 018,
020), shall be performed in addition to facility inspections.
(i.) Implementation. Implementation of the plan shall include documentation of all monitoring,
measurements, inspections and maintenance activities and training provided to employees, including
the log of the sampling data and of activities taken to implement BMPs associated with the industrial
activities, including vehicle maintenance activities. Such documentation shall be kept on-site for a
period of five years and made available to the Director or his authorized representative immediately
upon request.
B.(2.) STORMWATER DEFINITIONS
(a.) Best Management Practices (BMPs)
PART I, Page 11 of 18
rermit ivo. iNk_uuU4,3Ub
Schedules of activities, prohibitions of practices, maintenance procedures, and other management
practices to prevent or reduce the pollution of waters of the United States. BMPs also include
treatment requirements, operation procedures, and practices to control plant site runoff, spillage or
leaks, sludge or waste disposal, or drainage from raw material storage.
(b.) Bulk Storage of Liquid Products
Liquid raw materials, manufactured products, waste materials or by-products with a single above
ground storage container having a capacity of greater than 660 gallons or with multiple above ground
storage containers having a total storage capacity of greater than 1,320 gallons.
(c.) Coal Pile Runoff
The rainfall runoff from or through any coal storage pile.
(d.) Landfill
A disposal facility or part of a disposal facility where waste is placed in or on land and which is not a
land treatment facility, a surface impoundment, an injection well, a hazardous waste long-term
storage facility or a surface storage facility.
(e.) Point Source Discharge
Any discernible, confined and discrete conveyance, including but specifically not limited to, any pipe,
ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, or concentrated animal
feeding operation from which pollutants are or may be discharged to waters of the state.
(f.) Representative Storm Event
A storm event that measures greater than 0.1 inches of rainfall and that is preceded by at least 72
hours in which no storm event measuring greater than 0.1 inches has occurred. A single storm event
may contain up to 10 consecutive hours of no precipitation. For example, if it rains for 2 hours without
producing any collectable discharge and then stops, a sample may be collected if a rain producing a
discharge begins again within the next 10 hours.
(g.) Runoff Coefficient
The fraction of total rainfall that is not infiltrated into or otherwise retained by the soil, concrete;
asphalt or other surface upon which it falls that will appear at the conveyance as runoff.
(h.) Secondary Containment
Spill containment for the contents of the single largest tank within the containment structure plus
sufficient freeboard to allow for the 25-year, 24-hour storm event.
(i.) Section 313 Water Priori!y Chemical
A chemical or chemical category which:
(i.) Is listed in 40 CFR 372.65 pursuant to Section 313 of Title III of the Superfund Amendments and
Reauthorization Act (SARA) of 1986, also titled the Emergency Planning and Community Right-
to-Know Act of 1986;
(ii.) Is present at or above threshold levels at a facility subject to SARA title III, Section 313 reporting
requirements; and
(iii.) That meet at least one of the following criteria:
(iv.) Is listed in appendix D of 40 CFR part 122 on either Table II (organic priority pollutants), Table
III (certain metals, cyanides, and phenols) or Table IV (certain toxic pollutants and hazardous
substances);
(v.) Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the CWA at 40 CFR 116.4;
or
(vi.) Is a pollutant for which EPA has published acute or chronic water quality criteria.
(j.) Significant Materials
PART I, Page 12 of 18
rernui ivo. iVk._vuui,>vo
Includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents, and plastic
pellets; finished materials such as metallic products; raw materials used in food processing or
production; hazardous substances designated under section 101(14) of CERCLA; any chemical the
facility is required to report pursuant to section 313 of Title III of SARA; fertilizers; pesticides; and
waste products such as ashes, slag and sludge that have the potential to be released with stormwater
discharges.
(k.) Significant Spills
Includes, but is not limited to: releases of oil or hazardous substances in excess of reportable quantities
under section 311 of the Clean Water Act (Ref: 40 CFR 110.10 and CFR 117.21) or section 102 of
CERCLA (Ref: 40 CFR 302.4).
(1.)
Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately following rainfall or
as a result of snowmelt.
(m.) Stormwater Associated with Industrial Activity
The discharge from any point source which is used for collecting and conveying stormwater and
which is directly related to manufacturing, processing or raw material storage areas at an industrial
site. The term does not include discharges from facilities or activities excluded from the NPDES
program.
The following categories of facilities are considered to be engaging in "industrial activity":
(i.) Facilities subject to stormwater effluent limitations guidelines, new source performance
standards, or toxic pollutant effluent standards under 40 CFR Subchapter N Parts 400 - 471
(except facilities which are exempted under (k) of this definition);
(ii.) Facilities classified as Standard Industrial. Classifications 24 (except 2434), 26 (except 265 and
267), 28, 29, 30, 311, 32, 33, 3441, 373;
(iii.) Facilities classified as Standard Industrial Classifications 10 through 14 (mineral industry)
including active or inactive mining operations (except for areas of coal mining operations
meeting the definition of a reclamation area under 40 CFR 434.11(1)) and oil and gas exploration,
production, processing, or treatment operations, or transmission facilities that discharge
stormwater contaminated by contact with or that has come in contact with, any overburden, raw
material, intermediate products, finished products, byproducts or waste products located on the
site of such operations; inactive mining operations are mining sites that are not being actively
mined, but which have an identifiable owner/operator;
(iv.) Hazardous waste treatment, storage, or disposal facilities, including those that are operating
under interim status or a permit under Subtitle C of RCRA;
(v.) Landfills, land application sites, and open dumps that receive or have received any industrial
wastes (waste that is received from any of the facilities described under this definition) including
those that are subject to regulation under Subtitle D of RCRA;
(vi.) Facilities involved in the recycling of materials, including metal scrapyards, battery reclaimers,
salvage yards and automobile junkyards, including but limited to those classified as Standard
Industrial Classification 5015 and 5093;
(vii.) Steam electric power generating facilities, including coal handling sites;
(viii.) Transportation facilities classified as Standard Industrial Classifications 40, 41, 42, 44, and 45
which have vehicle maintenance shops, equipment cleaning operations, or airport deicing
operations. Only those portions of the facility that are either involved in vehicle maintenance
(including vehicle rehabilitation, mechanical repairs, painting, fueling and lubrication),
equipment cleaning operations, airport deicing operations, or which are otherwise identified
under (a)-(g) or (i)-(k) of this definition are associated with industrial activity;
(ix.) Treatment works treating domestic sewage or any other sewage sludge or wastewater treatment
device or system, used in the storage treatment, recycling, and reclamation of municipal or
domestic sewage, including lands dedicated to the disposal of sewage sludge that are located
PART I, Page 13 of 18
Permit No. NLUUU43U6
within the confines of the facility, with a design flow of 1.0 MGD or more, or required to have'an
approved pretreatment program under 40 CFR part 403. Not included are farm lands, domestic
gardens or lands used for sludge management where sludge is beneficially reused and which are
not physically located in the confines of the facility, or areas that are in compliance with section
405 of the CWA;
(x.) Construction activity including clearing, grading and excavation activities except: operations
that result in the disturbance of less that five acres of total land area which are not part of a
larger common plan of development or sale;
(xi.) Facilities under Standard Industrial Classifications 20, 21, 22, 23, 2434, 25, 265, 267, 27, 283, 285,
30, 31 (except 311), 323, 34 (except 3441), 35, 36, 37 (except 373), 38, 39, 4221-25, (and which are
not otherwise included within (a)-(j) of this definition).
For the categories of industries identified in (a) through (j) of this definition the term includes, but is
not limited to, stormwater discharges from industrial plant yards; immediate access roads and rail
lines used or traveled by carriers of raw materials, manufactured products, waste material, or by-
products used or created by the facility; material handling sites; refuse sites; sites used for the
application or disposal of process wastewaters; sites used for the storage and maintenance of material
handling equipment; sites used for residual treatment, storage, or disposal; shipping and receiving
areas; manufacturing buildings; storage areas (including tank farms) for raw materials, and
intermediate and finished products; and areas where industrial. activity has taken place in the past and
significant materials remain and are exposed to stormwater. For the categories of industries identified
in (k), the term includes only stormwater discharges from all areas listed in the previous sentence
(except access roads) where material handling equipment or activities, raw material, intermediate
products, final products, waste material, by-products, or industrial machinery are exposed to
stormwater.
Material handling activities include the: storage, loading and unloading, transportation, or
conveyance of any raw material, intermediate product, finished product, by-product or waste product.
The term excludes areas located on plant lands separated from the plant's industrial activities, such as
office buildings and accompanying parking lots as long as the drainage from the excluded areas is not
mixed with stormwater drained from the above-described areas.
Industrial facilities (including industrial facilities that are Federally or municipally owned or operated
that meet the description of the facilities listed in (a)-(k)) include those facilities designated under 40
CFR 122.26(a)(1)(v).
(n.) Ten Year Design Storm
The precipitation event of a duration which will produce the maximum peak rate of runoff for the
watershed of interest resulting from a rainfall event of an intensity expected to be equaled or
exceeded, on the average, once in ten years.
(o.) Total Flow
The flow corresponding to the time period over which the sample collection occurs. The total flow
calculated based on the size of the area draining to the outfall, the amount of the built-upon
(impervious) surfaces within the drainage area, and the total amount of rainfall occurring during the
sampling period.
(p.) Vehicle Maintenance Activity
Vehicle rehabilitation, mechanical repairs, painting; fueling, lubrication, vehicle cleaning operations,
or airport deicing operations.
(q.) Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported by water, air,
gravity, or ice from its site of origin which can be seen with the unaided eye.
(r.) Waste Pile
Any non-containerized accumulation of solid, non-flowing waste that is used for treatment or storage.
PART I, Page 14 of 18
Permit No. M_UUU4,?Ub
SECTION C - SPECIAL CONDITIONS
C.(1.) CHRONIC TOXICITY PASSNAIL PERMIT LIMIT (Quarterly)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality
to Ceriodaphnia dubia at an effluent concentration of 16% at Outfall 012 or 90% at any other outfall.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the
"North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent
versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February
1998) or subsequent versions. Effluent samples for self-monitoring purposes must be obtained during
representative effluent discharge below all waste treatment. The tests will be performed once during each
calendar quarter (January-March, April-June, July-September and October-December).
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-February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are specified
in the "North.Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February 1998) 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 THP313 for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be
sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch 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 quarter 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
Environmental Sciences Branch 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.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Water Quality 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.
PART I, Page 15 of 18
rermit 1Vo. iN?uvvt.)oo
C.(2.) ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (Quarterly)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North
Carolina Procedure Document entitled "Pass /Fail Methodology For Determining Acute Toxicity In A Single
Effluent Concentration" (Revised-July, 1992 or subsequent versions). The monitoring shall be performed as
a Fathead Minnow (Pimephales promelas) 24-hour static test. The effluent concentration at which there
may be at no time significant acute mortality is 90% (defined as treatment two in the procedure document).
Effluent samples for self-monitoring purposes must be obtained during representative effluent discharge
below all waste treatment. The tests will be performed once during each calendar quarter (January-March,
April-June, July-September and October-December).
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGE6C.
Additionally, DWQ Form AT-2 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later than
30 days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical /physical measurements
performed in association with the toxicity tests, as well as all dose/response data. 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 the period 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
Environmental Sciences Branch at the address cited above.
Should any single monitoring event indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement
will revert to the frequencies- specified above.
Should the permittee fail to monitor during a period in which toxicity monitoring is required, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly
test requirement will revert to the frequencies specified above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality 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 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. -
C.(3.) ACUTE TOXICITY MONITORING (Quarterly)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined as definitive in
E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to
Freshwater and Marine Organisms." The monitoring shall be performed as a Fathead Minnow (Pimephales
promelas) 24-hour static test. Effluent samples for self-monitoring purposes must be obtained during
representative effluent discharge below all waste treatment. The tests will be performed on a discharge
event during each calendar quarter (January-March, April-June, July-September and October-December).
PART I, Page 16 of 18
rermit 1Vu. ivt.uuuiouo
The, parameter code for this test is TAE6C. All toxicity testing results required as part of this permit
cohdition will be entered on the Effluent Discharge Form (MR-1) for the month in which it was performed,
using the appropriate parameter code. Additionally, DWQ Form-AT-1 (original) is to be sent to the
following address:
Attention: Environmental Sciences Branch
North Carolina Division of Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later than
30 days after the end of the reporting period for which the report is made
Test data shall be complete and accurate and include all supporting chemical /physical measurements
performed in association with the toxicity tests, as well as all dose/response data. 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 quarter 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
Environmental Sciences Branch at the address cited above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Water Quality 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 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.
C.(4.) ACUTE TOXICITY MONITORING (Annual)
The permittee shall conduct annual toxicity tests using protocols defined as definitive in E.P.A. Document
EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to Freshwater and
Marine Organisms." The monitoring shall be performed as a Fathead Minnow (Pimephales promelas) 24-hour
static test. Effluent samples for self-monitoring purposes must be obtained below all waste treatment. The
permittee will conduct one test annually, with the annual period beginning in January of the calendar year
of the effective date of the permit.
The annual toxicity test must be performed by June 30. Should there be no discharge of flow from the
facility during the six month period January 1-June 30, 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 in the comments section indicate "No Flow for January 1-June 30, {calendar year)." The report
must be signed and submitted to the Environmental Sciences Section at the address noted below.
If no discharge event occurs from January 1-June 30, yet a discharge event occurs from July 1-December
31, then the facility must perform toxicity monitoring and report the data as noted below.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit
condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it was performed,
using the appropriate parameter code. Additionally, DWQ Form AT-1 (original) is to be sent to the
following address:
Attention: Environmental Sciences Branch
PART I, Page 17 of 18
I C111L1L 1VV. 1VI_VVV'2VVV
North Carolina Division of Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental 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 and accurate and include all supporting chemical /physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of
the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the
waste stream.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality 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 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.
C.(5.) BIOCIDES
(a.) The Permittee shall not use any biocides except those specifically approved by the Director and only
according to the terms and conditions of such approval. The addition of chromium, copper, or zinc is
specifically prohibited except as components of biocidal compounds approved for use at this facility.
(b.) Approved biocides shall consist of those approved in conjunction with the current permit application
and others subsequently approved by the Director. The Division may withdraw its approval for any
biocides when it considers such action necessary to protect water quality in the receiving stream.
The Permittee shall notify the Director in writing not later than ninety (90) days prior to the planned use of
any additional biocide that may be toxic to aquatic life. Such notification shall include submittal of a
completed Biocide Worksheet Form 101 and a map locating the discharge point and receiving stream.
PART I, Page 18 of 18