NC0020567_Industrial User_20190221

Yadkin Valley Sewer Authority(YVSA)
Control Authority
PERMIT
Industrial User Pretreatment Permit(IUP)
To Discharge Wastewater Under the
Industrial Pretreatment Program
IWP002 429
IUP Number 40 CFR Category(if Applicable)
In compliance with the provisions of North Carolina General Statute 143-215.1, any
applicable federal categorical pretreatment regulations, all other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management
•
Commission, and the Control Authority Sewer Use Ordinance. The following Industry,
hereafter referred to by name or as the permittee:
Industry name,permittee:
Weyerhaeuser NR Company RECEIVED/DENR/DWR
Facility Located at Street Address
524 Pride Way FEB 21 2019
City Water Resources
Elkin Permitting Section
State,Zip
North Carolina 28621
is hereby authorized to discharge wastewater from the facility located at the above listed
address into the sanitary sewer collection system and the wastewater treatment facility of
the Control Authority listed below:
IUP Control Authority WWTP name:
Yadkin Valley Sewer Authority(Authority) Elkin WWTP
NPDES Number:
NC0020567
W WTP Address:
211 Marion Road
City,State,Zip
Elkin,North Carolina 28621
in accordance with effluent limitations, monitoring requirements, and all other conditions
set forth in Parts I, II, and III of this Industrial User Pretreatment Permit (IUP).
Effective date, this permit and the authorization to discharge shall become
effective on this date:.
April 1, 2019
Expiration date,this permit and the authorization to discharge shall expire at
midnight on this date:
December 31, 2020
2-//41
Date signed YVS

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
IUP, PART I, OUTLINE:
A.) IUP Basic Information
B.) IUP Modification History
C.) Authorization Statement
D.) Description of Discharges
E.) Schematic and Monitoring Locations
F.) Effluent Limits & Monitoring Requirements
G.) Definitions and Limit Page(s) notes
A. IUP Basic Information:
Receiving Control Authority&WWTP name: POTW NPDES#:
Yadkin Valley Sewer Authority WWTP NC0020567
IUP Name: IUP Number:
Weyerhaeuser NR Company IWP002
IUP Effective date: Pipe Numbers,list all regulated pipes:
April 1, 2019 001
IUP Expiration date: IUP 40 CFR#(if applicable),or N/A:
December 31, 2020 429
B. IUP History. A Complete Permit History is required):
Effective Date Renewal or Description of changes over previous IUP.
Modification
April 1, 2019 Issuance
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Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
C.) Authorization Statement:
1.) The Permittee is hereby authorized to discharge wastewater in accordance
with the effluent limitations, monitoring requirements, and all other conditions
set forth in this Industrial User Pretreatment Permit (IUP) into the sewer
collection system and wastewater treatment facility of the Control Authority.
2.) The Permittee is hereby authorized to operate and discharge wastewater from
the following treatment or pretreatment facilities:
Chemical Treatment Process:
Wastewater from the Wet Electrostatic Precipitation (WESP) system will be collected in
a sump pit and pumped through a Side Hill Screen Filter system to remover larger
particulate prior to collection in the surge tank. Solids from the Side Hill Screen Filter
will be disposed of with the wood fiber solid waste and used for energy recovery. From
the surge tank the water will be pumped to the Ring Clarifier. Solids from the Ring
Clarifier will be transferred to the belt filter press. A flow of 125 gpm of supernatant will
gravity flow to the T1000 lift tank (existing FRP Tank). The remaining flow of
supernatant from the Ring Clarifier will be directed to the Clean Water Tank for reuse.
From the T1000 lift tank the water will be pumped using the existing P1000 centrifugal
pump to the Reaction Tank T1010. The pH will be adjusted to approximately 4.0 S.U. in
T 1010. The water will gravity flow to Reaction Tank T1020. A chemical coagulant will
be added to Reaction Tank T1020. The chemical concentration will be set by the
operator. The feed rate will be proportional to the influent flow rate. The water will
gravity flow from T1020 to lift tank T1030. The water will then be pumped to the
Dissolved Air Flotation (DAF) system. A polymer solution and compressed air will be
added to the wastewater prior to the DAF system. The solids generated by the DAF
system will be pumped to the belt filter press for processing. The processes solids from
the belt press will be used for energy recovery. The filtrate will be returned to the Clean
Water Tank for reuse. The supernatant from_the DAF system will gravity flow to the
T1040 lift tank. Pond makeup water may be added to the T1040 lift tank based upon the
need for fresh water to the process. The water from T1040 will be pumped to the sand
filters using pump P 1040.
Water Filtration and Membrane Systems:
The water pumped from the T1040 lift tank will flow through two of the three sand filter
units. This will allow a sand filter unit to be in backwash or standby while two are in
operation. The filtrate from the sand filters will be directed to the cooling system feed
tank T1050 or can be directed to the Clean Water tank. The backwash from the sand
filters will be directed to the RING CLARIFIER. Backwash of the sand filters will be
controlled by the pressure differential of the sand filters in operation. The water will be
pumped from the T1050 cooling system feed tank by the P1050 pump. The water will
pass through two heat exchange systems and can be recirculated or directed to the IPRO
feed tank T1060 based upon the water temperature existing the cooling system. The
cooled water may be recycled if the effluent temperature does not meet the programmed
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Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
value. Filtrate from the sand filters will be collected in a 10,000-gallon storage tank
T1060. The water will be pumped from the T1060 tank to the cartridge filters using pump
P1060. Microbiocide and antiscalant will be pumped into the water stream prior to the
cartridge filters. The feed rate for the microbiocide and the antiscalant will be
proportional based upon the feed flow rate. The water will flow from P 1060 to twin filter
housings containing1 micron cartridge filters to the I-PRO system. The permeate from
g g Y
the I-PRO will flow to a 6,000-gallon tank T1090. The concentrate may be recycled or
can be discharged to the 10,000 gallon concentrate holding tank T1110. Water will be
pumped from the concentrate holding tank to be used for land application, fuel
conditioning, or evaporation. The I-PRO permeate water will be pumped from the B-PRO
feed tank (T1090) using pump P1090 through twin 0.5-micron cartridge filters. The
operator may direct the B-PRO feed water to the Clean Water Tank or other use points.
The water will flow from the cartridge filters to the B-PRO system. Concentrate from the
B-PRO will be returned to the I-PRO for retreatment. The permeate from the B-PRO will
flow to the 10,000 gallon tank T1100. From the T1100 storage tank the water will be
pumped using P1100 to the following points:
- Clean water tank for reuse
- B-PRO system for flushing of membranes during shutdown
- I-PRO system for flushing of membranes during shutdown
- Clean In Place tank T1120 for cleaning of I-PRO membranes
- Backwash of sand filters
- Discharge to sanitary sewer
- Recycled to BPRO Feed Tank
When water is to be discharged to the Authority, further treatment will occur for cyanide.
Once T1100 fills, the IPRO will shut down. Treated permeate from BPRO permeate tank
T1100 will be recycled back to the BPRO feed tank (T1090) and will pass through the
BPRO a second, and a third time for a total of three passes. After the third pass, 10ppm
sodium Hypochlorite will be added to T1100, and water will be recirculated through the
UV disinfection system until T1100 has turned over a minimum of three times. Once
complete TI100 can be sent to the discharge tank and released to the Authority, and the
IPRO and BPRO can return to normal operation until T1100 has filled again.
The sanitary sewer discharge includes monitoring for turbidity, flow, temperature, and
pH. If the water fails to meet the programmed limits for these parameters, it will be
returned to the BPRO feed tank for retreatment until the out of specification parameter is
acceptable for discharge.
General System Information:
Containment: All tanks, piping, and systems will be within the plant containment system.
Leaks or overflows will be contained and will flow to the storage pond for treatment.
Chemical storage tanks be double contained to prevent concentrated chemical spills.
Chemical feed pumps will include containment to capture any minor leaks.
4

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
Clean In Place (CIP): The CIP system for the I-PRO membranes will include a storage
tank, chemical transfer pumps, and valves. The system will provide a method to clean
membranes during off-shifts to maintain optimal system operation. Concentrates from the
CIP system will be neutralized and transferred to the concentrate storage tank(T1110).
5

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
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Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
3.) The Permittee is hereby authorized to, if required by the YVSA and after
receiving Authorization to Construct (A to C) from the YVSA, construct and
operate additional pretreatment units as needed to meet final effluent
limitations.
D.) Description of IUP Discharge(s):
1. Describe the discharge(s) from all regulated pipes.
Pipe# 001 , Description of Discharge:
Process wastewater.
7

Industrial User Pretreatment Permit(IUP)
PART I
Specific Conditions
E.) Schematic and Monitoring Locations:
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Receiving POTW name=>YVSA IU name=> Weyerhaeuser NR Company
IUP, Part 1 Section F: Receiving POTW NPDES#_>NC0020567 IUP#=>IWP002
Effluent Limits and Monitoring Effective date for these Limits=> Pipe#=>001
Requirements Expiration date for these Limits=> 40 CFR#=>429
if not applicable put N/A
The Permittee may discharge from this THE LIMITS ON THIS PAGE ARE,(Check one below):
LIMITS for ENTIRE permit period => X
specific Pipe number according to these INTERIM Limits for period# 1 =>
specific dates, effluent limits, and INTERIM Limits for period#2 =>
monitoring requirements
FINAL Limits Page => X
CONCENTRATION LIMITS MONITORING FREQUENCY SAMPLE RECOMMENDED
COLLECTION LABORATORY
METHOD DETECTION
PARAMETERS Daily Max Units By Industry By POTW (C or G) LIMITS
Flow 0.060 MGD Daily 1/6 Months Continuous
BOD 250 mg/1 3/week 1/6 Months C 2.0 mg/1
COD Monitor mg/1 3/week 1/6 Months C 5.0 mg/1
TSS 250 mg/1 3/week 1/6 Months C 2.5 mg/1
TDS 500 mg/1 1/month 1/6 Months C
Color(1) Monitor(50 future) ' PtCo 3/week 1/6 Months C 5
Ammonia Nitrogen 25.00 mg/1 3/week 1/6 Months C 0.1 mg/1
Total Phosphorus 8.00 mg/1 1/month 1/6 Months C 0.05 mg/1
Oil&Grease 100.00 mg/1 1/month 1/6 Months G 5 mg/1
Arsenic 0.003 mg/1 1/month 1/6 Months C 0.01 mg/1
Cadmium 0.003 mg/1 1/month 1/6 Months C 0.002 mg/1
Total Chromium 0.05 mg/1 1/month 1/6 Months C 0.005 mg/1
Copper 0.061 mg/1 1/month 1/6 Months C 0.002 mg/1
Cyanide 0.015 mg/1 1/month 1/6 Months C 0.004 mg/1
Lead 0.049 mg/1 1/month 1/6 Months C 0.01 mg/1
Mercury(2) 300 ng/1 1/month 1/6 Months C 1.0 ng/1
(1) See Part I,G.6.
(2)Mercury sampling and analysis shall be conducted using techniques described in EPA Method 1631E.
Continued on next page
9

IUP Part 1 Section F: Receiving POTW name=>YVSA IU name=>Weyerhaeuser NR Company
Receiving POTW NPDES#=>NC0020567 IUP#=>IWP002
Effluent Limits and Monitoring Effective date for these Limits=> Pipe#=>001
Requirements Expiration date for these Limits=> 40 CFR#=>429
if not applicable put N/A
The Permittee may discharge from this THE LIMITS ON THIS PAGE ARE,(Check one below):
LIMITS for ENTIRE permit period => X
specific Pipe number according to these INTERIM Limits for period# 1 =>
specific dates, effluent limits, and INTERIM Limits for period#2 =>
monitoring requirements FINAL Limits Page => X
Continued from previous page
CONCENTRATION LIMITS MONITORING FREQUENCY SAMPLE RECOMMENDED
COLLECTION LABORATORY
METHOD DETECTION
PARAMETERS Daily Max Units By Industry By POTW (C OR G) LIMITS
Nickel 0.021 mg/1 1/month 1/6 Months C 0.01 mg/1
Silver 0.005 mg/1 1/month 1/6 Months C 0.0025 mg/1
Zinc 0.175 mg/1 1/month 1/6 Months C 0.01 mg/1
pH 6.0 to 11.0 SU Every sample 1/6 Months G
Temperature 40 Celsius Every sample 1/6 Months G
10

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
G.) Definitions and Limit Page(s) notes:
In addition to the definitions in the YVSA Sewer Use Ordinance the following
definitions and requirements apply:
1. Composite Sample:
Unless defined differently below, a composite sample for the monitoring
requirements of this IUP, is defined as the automatic or manual collection
of one grab sample of constant volume, not less than 100 ml, collected
every hour during the entire discharge period on the sampling day.
Sampling day shall be a typical production, and discharge day.
2. Discharge Monitoring Frequencies
Daily Monitoring Frequency as specified in this IUP shall mean each day
of discharge.
1/6 Month Monitoring Frequency as specified in the IUP shall mean a
sampling event conducted during the period of January through June and
July through December.
1/Month Monitoring Frequency as specified in the IUP shall mean a
sampling event conducted once during each month of calendar year.
3/week Monitoring Frequency as specified in the IUP shall mean three (3)
daily sampling events during the calendar week of Sunday through
Saturday.
3. Grab Sample .
Grab sample for the monitoring requirements of this IUP, is defined as a
single "dip and take" sample collected at a representative point in the
discharge stream.
4. Instantaneous measurement
An Instantaneous measurement for the monitoring requirements of this
IUP is defined as a single reading, observation, or measurement.
5. Continuous Flow Measurement
Cont. (continuous), for the purpose of flow monitoring, is a measure of
discharge flow from the facility which occurs without interruption
throughout the operating hours of the facility. Flow shall be monitored
continually except for the infrequent times when there may be no flow or
for infrequent maintenance activities on the flow device. The permittee
11

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
shall record the discharge flow meter totalizer reading each day to account
for instances when the metering/SCADA system fails.
6. Color Monitoring
Color monitoring is required to establish capability of Permittee's
pretreatment system to prevent its discharge from interfering with Control
Authority's future disinfection system at the receiving WWTP. Control
Authority's future disinfection system is planned to be an ultraviolet (UV)
light system. At such time as Control Authority notifies Permittee of its
intentions to implement UV disinfection, an effluent limitation of 50 PtCo
units shall begin to apply according to the following:
1. If Permittee's pretreatment system has consistently met this limit
based on historical data from the required monitoring, then the
limitation shall begin on the date that the Control Authority begins
using UV disinfection;
2. If Permittee's pretreatment system has not consistently met this
limit based on historical data from the required monitoring, then
Permittee shall begin the process of adding and/or improving
pretreatment measures in order to meet the color limit. The
implementation shall proceed according to a schedule as follows:
a. Within six (6) months of said notification from Control
Authority, Permittee shall submit a request for an
authorization-to-construct(ATC) permit based on plans and
specifications of additional pretreatment equipment and
processes, along with supporting laboratory data from full-
scale or bench-scale testing demonstrating ability to reduce
color to below 50 PtCo units.
b. Within six (6) months of submission of said plans and
specifications and data, construct pretreatment system
additions or improvements.
c. Regardless of the time taken to obtain an ATC and a to
implement the pretreatment system improvements, the
color limitation shall apply beginning 12 months after the
Control Authority notifies Permittee of its intentions to
implement UV disinfection, but not earlier than the date the
Control Authority actually begins using UV disinfection.
12

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
Outline of PART II,
1. Representative Sampling 16. Federal and/or State Laws
2. Reporting 17. Penalties
3. Test Procedures 18. Need to Halt or Reduce
4. Additional Monitoring by 19. Transferability
Permittee
5. Duty to comply 20. Property Rights
6. Duty to Mitigate 21. Severability
7. Facilities Operation, Bypass 22. Modification, Revocation,
Termination
8. Removed substances 23. Reapplication
9. Upset Conditions 24. Dilution Prohibition
10. Right of Entry 25. Reports of Changed Conditions
11. Availability of Records 26. Construction of pretreatment
facilities
12. Duty to provide information 27. Reopener
13. Signatory Requirements 28. Categorical Reopener
14. Toxic Pollutants 29. General Prohibitive Standards
15. Civil and Criminal Liability 30. Reports of Potential Problems
1. Representative Sampling
Samples and measurements taken as required herein shall be representative of the
volume and nature of the monitored discharge. All samples shall be taken at the
monitoring points specified in this permit and, unless otherwise specified, before
the effluent joins or is diluted by any other wastestream, body of water, or
substance. Monitoring points shall not be changed without notification to, and
approval by, the permit issuing authority.
2. Reporting
a.) Monitoring results obtained by the permittee shall be reported on forms
specified by the YVSA, postmarked no later than the 20th day of the
month following the month in which the samples were taken. If no
discharge occurs during a reporting period(herein defined as each calendar
month) in which a sampling event was to have occurred, a form with the
phrase "no discharge" shall be submitted. Copies of these and all other
reports required herein shall be submitted to the YVSA at the following
address:
YVSA
Attn: Executive Director
500 NC Hwy 268 W
Elkin, NC 28621
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Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
b.) If the sampling performed by the permittee indicates a violation, the permittee
shall notify the YVSA within the same business day of becoming aware of the
violation. The permittee shall also repeat the sampling and analysis and
submit the results of the repeat analysis to the YVSA within 30 days after
becoming aware of the violation.
3. Test Procedures
Test procedures for the analysis of pollutants shall be performed in accordance
with the techniques prescribed in 40 CFR part 136 and amendments thereto unless
specified otherwise in the monitoring conditions of this permit.
4. Additional Monitoring by Permittee
If the permittee monitors any pollutant at the location(s) designated herein more
frequently than required by this permit, using approved analytical methods as
specified above, the results of such monitoring shall be submitted to the YVSA.
The YVSA may require more frequent monitoring or the monitoring of other
pollutants not required in this permit by written notification.
5. Duty to Comply
The permittee must comply with all conditions of this permit. Any permit
noncompliance constitutes a violation of the YVSA Sewer Use Ordinance and is
grounds for possible enforcement action.
6. Duty to Mitigate - Prevention of Adverse Impact
The permittee shall take all reasonable steps to minimize or prevent any discharge
in violation of this permit which has a reasonable likelihood of adversely affecting
human health, the POTW, the waters receiving the POTW's discharge, or the
environment.
7. Facilities Operation, Bypass
The permittee shall at all times maintain in good working order and operate as
efficiently as possible, all control facilities or systems installed or used by the
permittee to achieve compliance with the terms and conditions of this permit.
Bypass of treatment facilities is prohibited except when approved in advance by
the YVSA. Bypass approval shall be given only when such bypass is in
compliance with 40 CFR 403.17.
8. Removed Substances
Solids, sludges, filter backwash, or other pollutants removed in the course of
treatment or control of wastewaters shall be disposed of in a manner such as to
prevent any pollutants from such materials from entering the sewer system. The
permittee is responsible for assuring its compliance with any requirements
14

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
regarding the generation, treatment, storage, and/or disposal of"Hazardous waste"
as defined under the Federal Resource Conservation and Recovery Act.
9. Upset Conditions
An "upset" means an exceptional incident in which there is an unintentional and
temporary noncompliance with the effluent limitations of this permit because of
factors beyond the reasonable control of the permittee. An upset does not include
noncompliance to the extent caused by operational error, improperly designed or
inadequate treatment facilities, lack of preventative maintenance, or careless or
improper operations.
An upset may constitute an affirmative defense for action brought for the
noncompliance. The permittee has the burden of proof to provide evidence and
demonstrate that none of the factors specifically listed above were responsible for
the noncompliance.
10. Right of Entry
The permittee shall allow the staff of the State of North Carolina Environment
Quality, Division of Water Resources, the Regional Administrator of the
Environmental Protection Agency, the YVSA, and/or their authorized
representatives, upon the presentation of credentials:
1. To enter upon the permittee's premises where a real or potential
discharge is located or in which records are required to be kept under the
terms and conditions of this permit; and
2. At reasonable times to have access to and copy records required to be
kept under the terms and conditions of this permit; to inspect any
monitoring equipment or monitoring method required in this permit; and
to sample any discharge of pollutants.
11. Availability of Records and Reports
The permittee shall retain records of all monitoring information, including all
calibration and maintenance records as well as copies of reports and information
used to complete the application for this permit for at least five years. All records
that pertain to matters that are subject to any type of enforcement action shall be
retained and preserved by the permittee until all enforcement activities have
concluded and all periods of limitation with respect to any and all appeals have
expired.
Except for data determined to be confidential under the Sewer Use Ordinance, all
reports prepared in accordance with terms of this permit shall be available for
• public inspection at the YVSA. As required by the Sewer Use Ordinance, effluent
data shall not be considered confidential.
12. Duty to Provide Information
15

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
The permittee shall furnish to the Executive Director or his/her designees, within
a reasonable time, any information which the Executive Director, his/her
designee, or the Division of Water Quality may request to determine whether
cause exists for modifying,revoking and reissuing, or terminating this permit or to
determine compliance with this permit. The permittee shall also furnish, upon
request, copies of records required to be kept by this permit.
13. Signatory Requirements
All reports or information submitted pursuant to the requirements of this permit
must be signed and certified by the Authorized Representative as defined under
the Sewer Use Ordinance. If the designation of an Authorized Representative is
no longer accurate because a different individual or position has responsibility for
the overall operation of the facility, or overall responsibility for environmental
matters for the company, a new authorization satisfying the requirements of this
section must be submitted to the YVSA prior to or together with any reports to be
signed by an authorized representative.
14. Toxic Pollutants
If a toxic effluent standard or prohibition (including any schedule of compliance
specified in such effluent standard or prohibition) is established under Section
307(a) of the Federal Clean Water Act for a toxic pollutant which is present in the
discharge and such standard or prohibition is more stringent than any limitation
for such pollutant in this permit, this permit may be revised or modified in
accordance with the toxic effluent standard or prohibition and the permittee so
notified.
15. Civil and Criminal Liability
Nothing in this permit shall be construed to relieve the permittee from civil or
criminal penalties for noncompliance.
16. Federal and/or State Laws
Nothing in this permit shall be construed to preclude the institution of any legal
action or relieve the permittee from any responsibilities, liabilities, or penalties
established pursuant to any applicable Federal and/or State law or regulation.
17. Penalties
The Sewer Use Ordinance of the YVSA provides that any person who violates a
permit condition is subject to a civil penalty not to exceed $25,000 dollars per day
of such violation.
Under state law, (NCGS 143-215.6B), under certain circumstances it is a crime to
violate terms, conditions, or requirements of pretreatment permits. It is a crime to
knowingly make any false statement, representation, or certification in any record
or other document submitted or required to be maintained under this permit,
16

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
including monitoring reports or reports of compliance or noncompliance. These
crimes are enforced at the prosecutorial discretion of the local District Attorney.
18. Need to Halt or Reduce not a Defense
It shall not be a defense for a permittee in an enforcement action that it would
have been necessary to halt or reduce the permitted activity to maintain
compliance with the conditions of the permit.
19. Transferability
This permit shall not be reassigned or transferred or sold to a new owner, new
user, different premises, or a new or changed operation without approval of the
YVSA.
20. Property Rights
This permit does not convey any property rights in either real or personal property,
or any exclusive privileges, nor does it authorize any injury to private property or
any invasion of personal rights, nor any infringement of Federal, State or local
laws or regulations.
21. Severability
The provisions of this permit are severable and, if any provision of this permit or
the application of any provision of this permit to any circumstance is held invalid,
the application of such provision to other circumstances and the remainder of this
permit shall not be affected thereby.
22. Permit Modification, Revocation, Termination
This permit may be modified, revoked and reissued or terminated with cause in
accordance to the requirements of the YVSA Sewer Use Ordinance and North
Carolina General Statute or implementing regulations.
23. Re-Application for Permit Renewal
The permittee is responsible for filing an application for reissuance of this permit
at least 90 days prior to its expiration date.
24. Dilution Prohibition
The permittee shall not increase the use of potable or process water or in any other
way attempt to dilute the discharge as a partial or complete substitute for adequate
treatment to achieve compliance with the limitations contained in this permit.
25. Reports of Changed Conditions
The permittee shall give notice to the YVSA of any planned significant (±20%)
changes to the permittee's operations or system which might alter the nature,
quality, or volume of its wastewater at least 60 days before the change. The
permittee shall not begin the changes until receiving written approval from the
17

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
YVSA. Also see Part II, 30 below for additional reporting requirements for
spill/slug issues.
Significant changes may include but are not limited to:
(a) increases or decreases to production;
(b) increases in discharge of previously reported pollutants;
(c) discharge of pollutants not previously reported to the YVSA;
(d) new or changed product lines; or
(e) new or changed manufacturing processes and/or chemicals
26. Construction
No construction of pretreatment facilities or additions thereto shall be begun until
Final Plans and Specifications have been submitted to the YVSA and written
approval and an Authorization to Construct(A to C)have been issued.
27. Reopener
The permit shall be modified or, alternatively, revoked and reissued to comply
with any applicable effluent standard or limitation for the control of any pollutant
shown to contribute to toxicity of the WWTP effluent or any pollutant that is
otherwise limited by the POTW discharge permit. The permit as modified or
reissued under this paragraph may also contain any other requirements of State or
Federal pretreatment regulations then applicable.
28. Categorical Reopener
This permit shall be modified, or alternatively, revoked and reissued, to comply
with any applicable effluent standard or limitation issued or approved under
Sections 302(b)(2)(C) and (D), 304(b)(2), and 307(a)(2) of the Clean Water Act, if
the effluent standard or limitation so issued or approved:
1.) contains different conditions or is otherwise more stringent than any
effluent limitation in this permit; or
2.) controls any pollutant not limited in this permit.
The permit as modified or reissued under this paragraph shall also contain any
other requirements of the Act then applicable.
29. General Prohibitive Standards
The permittee shall comply with the general prohibitive discharge standards in 40
CFR 403.5 (a) and(b) of the Federal pretreatment regulations.
30. Potential Problems
The permittee shall provide protection from accidental and slug discharges of
prohibited materials and other substances regulated by this permit. The permittee
shall also notify the POTW immediately of any changes at its facility affecting the
potential for spills and other accidental discharge, discharge of a non-routine,
18

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
episodic nature, a non-customary batch discharge, or a slug load as defined in the
Sewer Use Ordinance.
Additionally, the permittee shall notify by telephone the YVSA immediately of all
discharges that could cause problems to the POTW including any slug loadings as
defined in the Sewer Use Ordinance. If the permittee experiences such a
discharge, they shall inform the YVSA immediately upon the first awareness of
the commencement of the discharge. Notification shall include location of the
discharge, type of waste, concentration and volume if known and corrective
actions taken by the permittee. A written follow-up report thereof shall be filed
by the permittee within five (5) days, unless waived by the YVSA.
19

Industrial User Pretreatment Permit (IUP)
PART III
Special Conditions
1. Slug/Spill Control Measures
The permittee shall provide protection from accidental and/or slug discharges of
prohibited materials or other substances regulated by this permit. The permittee
shall implement a written slug/spill control and countermeasure plan and provide
the YVSA with an updated copy of the current Plan for review and approval
within 90 days of the effective date of this permit.
The Permittee shall submit an updated Slug/Spill Control Plan in accordance with
SUO for any changes in operations, responsible persons, or additions to the
facility. The SIU shall submit an updated Slug/Spill control plan for approval at
least 90 days before planned changes take effect. Modifications to the
controls/measures shall be approved by the YVSA 90 days prior to
installation/implementation. If a control/measure must be taken out of service for
maintenance or fails without incident, the YVSA shall be notified by telephone
within the same business day.
2. Sludge Management Plan
Ninety (90) days prior to the initial disposal of sludge generated by any
pretreatment facility, the permittee shall submit a sludge management plan to the
YVSA.
3. Flow Measurement Requirements
The permittee shall maintain appropriate discharge flow measurement devices and
methods consistent with approved scientific practices to ensure the accuracy and
reliability of measurements of the volume of monitored discharges. Devices
installed shall be a continuous recording flow meter capable of measuring flows
with a maximum deviation of less than 10% from true discharge rates throughout
the range of expected discharge volumes. The devices shall be installed,
calibrated, and maintained to ensure accuracy. At the time of issuance of the
permit, this method consists of a Signet 2536 Rotor-X Paddlewheel flow
metering device. The meter shall be calibrated at least once a year. Modifications
to the flow metering equipment shall be approved by the YVSA prior to
installation. If a required flow measurement device fails, the YVSA shall be
notified by telephone within the same business day. If the incident occurs outside
of regular business hours, notification to YVSA must be telephoned within 48
hours.
4. Certified Laboratory Analysis
Pollutant analysis shall be performed by a North Carolina Division of Water
Quality Certified Laboratory that is certified in the analysis of the pollutant in
wastewater.
20

Industrial User Pretreatment Permit (IUP)
PART III
Special Conditions
5. Certified Operator
Pursuant to Chapter 90A-44 of North Carolina General Statutes, and upon
classification of the facility by the Certification Commission, the permittee shall
employ a certified wastewater pretreatment plant operator in responsible charge
(ORC) of the wastewater treatment facilities. Such operator must hold a
certification of the type and grade equivalent to, or greater than the classification
assigned to the wastewater treatment facilities by the Certification Commission.
The permittee must also employ a certified backup operator of the appropriate
type and grade to comply with the conditions of Title 15A, Chapter 8G. The ORC
of the facility must visit the wastewater facility as required; must properly manage
and document daily operation and maintenance of the facility; and must comply
with all other conditions of Title 15A, Chapter 8G. The permittee shall submit a
letter designating the operator in responsible charge to the Certification
Commission or their designee within thirty days after facility classification.
21

IUP Synopsis
A. IUP Basic Information
Receiving POTW name: POTW NPDES#:
Yadkin Valley Sewer Authority NC0021156
IUP name: IUP Number:
Weyerhaeuser NR Company IWP002
IUP Effective date: Pipe Numbers,list all regulated pipes:
April 1, 2019 001
IUP expiration date: IUP 40 CFR#,if applicable:
December 31,2020 429
B. IUP Survey& Application form
A copy of the Industrial User Wastewater Survey&Application Form is
attached
C. IU Inspection form
A copy of an Industrial User Inspection Form is attached.
D. RATIONALE FOR LIMITATIONS:
As listed on the IUP Limits Page(s), PART I, Section F of the IUP.
RATIONALE#1:
Review of IU Monitoring Data, with no Over Allocation situation:
The following pollutants were assigned numerical limits in this IUP based
on a review of monitoring data (bench scale pilot testing) for the permittee.
The pollutant concentrations were shown to be below Local Limits (Section
2.3 of the Control Authority's sewer use ordinance), therefore the IUP limits
shall be equal to the Local Limits.
BOD, TSS, Ammonia Nitrogen, Cadmium, Chromium,
Copper, Nickel, TDS, Total Phosphorus, Oil & Grease,
Arsenic, Cyanide, Lead, Mercury, Zinc, Silver
1

IUP Synopsis
RATIONALE#2:
Categorical Industrial Limits, with no Over Allocation situation:
Were used (attach calculations)
LWere not used X
No pollutants were assigned numerical limits in this IUP based on the
categorical regulations since none apply.
RATIONALE #3:
Other Rationale for Limitations:
The following rationale was used for developing IUP Limits.
Parameter Rationale
Flow Based on requested amount from
Permittee and capacity of collection
system.
pH Based on Sewer Use Ordinance
Temperature Based on Sewer Use Ordinance
Color (future limit) To prevent interference with future
disinfection at WWTP using
ultraviolet light
2