NC0020338_Industrial User_20190314

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Monti Hassan
NC DWR/PERCS
1617 Mail Service Center RECEIVED/r, p owR
Raleigh, NC 27699-1617 MAR 19 2019
Wafer R sources
Permitting Section
Re: Unifi Inc. Permit#0005
Permit Renewal and Modification
Mr. Hassan:
Please find enclosed a renewed permit with a modification. The IUP application included lab
data,which is on file in this office. A Data Summary, rather than the laboratory results sheets, has been
n losed foryour convenience. If the lab data ispreferred I willprovide it to you.
enclosed
Modification for IUP#0005 as follows:
Modifications:
Cyanide sampling frequency changed from 2/month to 1/month.
Molybdenum sampling frequency changed from 1/ month to 2/6 months.
Fluoride sampling deleted.
If NCDENR feels there are any corrections to be made please advise.
Sincerely,
ia -J- '' -'"'"-l--- /---
Grant F.Trivette
Pretreatment Coordinator
213 Van Buren Street
Post Office Drawer 816 Telephone (336) 679-8732
Yadkinville, North Carolina 27055-0816 Fax (336) 679-6151

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TOW Of YADK NVIT ,J ,F
18
A TOWN IN PROGRESS"
T e
March 14,2019
Lisa Haynes
Environmental Manager RECEIVED/DENR/DWR
P.O. Box 1437 MAR 19 2019
Reidsville, NC 27323-1437 VVater Resources
Permitting Section
Subject: Industrial User Pretreatment Permit(IUP#0005) Renewal& Modification
Mrs. Haynes:
Your Industrial User Pretreatment Permit(IUP#0005) is enclosed. This permit is issued in response to
your Industrial User Wastewater Survey and Application. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the local Sewer Use Ordinance.
Please read this permit carefully.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable to you,you have a right to an adjudicatory hearing upon written request within thirty(30)
days following receipt of this letter. Unless such demand is made,this decision shall be final and
binding.
Modifications:
Cyanide sampling frequency changed from 2/month to 1/month.
Molybdenum sampling frequency changed from 1/month to 2/6 months.
Fluoride sampling deleted.
Please review Permit#0005 and if you have any questions or comments contact me at 336/679-2184
Grant Tr- ette
frd la9-t//a
Pretreatment Coordinator/WWTP ORC
213 Van Buren Street
Post Office Drawer 816 Telephone (336) 679-8732
Yadkinville, North Carolina 27055-0816 Fax (336) 679-6151

Town of Yadkinville
Control Authority and/or Municipality
PERMIT
RECEIVED/DENR/DWR
Industrial User Pretreatment Permit (IUP)
To Discharge Wastewater Under the MAR 19 2019
Industrial Pretreatment Program
Water Resources
Permitting Section
0005 N/A _
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 and/or Municipality Sewer Use Ordinance. The
following Industry, hereafter referred to by name or as the permittee:
Industry name,permittee:
Unifi Inc.
Facility Located at Street Address
1032 Unifi Industrial Road
City
Yadkinville
State,Zp
NC 27055
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 and/or Municipality listed below: _
IUP Control Authority and/or Municipality WWTP name:
Town of Yadkinville WWTP
NPDES Number:
NC0020338
WWTP Address:
1620 Fred Hinshaw Road
City,State,Zp
Yadkinville, NC 27055
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 at midnight on this date:.
4/2/2019
midnight Expiration date,this permit and the authorization to discharge shall
expire at on this date:
3/31/2024
3� /�-/q
Date signed ( Pretreatment Coordinator

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#:
Town of Yadkinville WWTP NC0020338
IUP Name: IUP Number:
Unifi Inc. 0005
IUP Effective date: Pipe Numbers,list all regulated pipes:
4/2/2019 01
IUP Expiration date: IUP 40 CFR#(if applicable),or N/A:
3/31/2024 N/A
B. IUP History.
Effective Renewal or Description of changes over previous IUP.
Date Modification
12/95 Modification Industry request, change flow from 0.112 mgd
to 0.072 mgd.
01/96 Modification Due to industry request, the Town allocated
original limits 0.112 mgd and parameters.
02/96 Modification Due to Town error, Unifi 5's oil&grease
monitoring was adjusted to original 2/6 months.
07/96 Modification Due to industry request, the Town subtracted
40,000 gal. from U5's 0.112 mgd and added
40,000 gal. to U2's 0.200 mgd flow.
10/96 Modification Due to industry request, the Town subtracted
40,000 gal. from U2's 0.240 mgd and added
40,000 gal. to U5's 0.072 mgd flow
10/97 Modification Due to addition of 24 texturizing machines, U5
requested an increase in flow from 0.112 mgd
to 0.160 mgd.
06/98 Renewal The Town reissued Permit # 0005 to Unifi due
to permit expiration.
2

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
07/98 Modification Due to Industry request, the Town allocated
more flow to 0.360 mgd and an increase in
parameters for the new process addition
(manufacturing polyester yam).
01/00 Renewal Town reissued permit #0005 to Unifi 5 due to
permit expiration( awaiting headworks
completion).
04/00 Modification With the completion of the headworks analysis
the Town reissued permit#0005 to Unifi 5
with no Cadmium limit(<5% MAHL),
Cadmium monitoring only every 2/6 months;
decrease in BOD, COD, TSS parameters.
04/01 Modification Modified permit for BOD, TSS, & COD
1/month. Permit expiration date 3/31/03.
02/03 Renewal& Reissued permit #0005 to Unifi due to permit
Modification expiration. Added Molybdenum monitoring to
permit.
08/04 Modification Permit modified to include monthly Fluoride
sampling per POTW's new NPDES permit.
04/06 Renewal& Due to permit expiration, the Town reissued
Modification permit #0005 to Unifi, Inc. Unifi Industrial
Road. Cyanide monitoring was increased to
twice per month This frequency may be
changed at a later date depending upon sample
results.
4/1/09 Renewal Due to permit expiration, the Town reissued
permit#0005 to Unifi, Inc. Unifi Industrial
Road.
7/1/2010 Modification Permit modified to match detection limits set in
LTMP. Modification to be effective 7/1/2010.
2/17/2011 Modification POTW sampling of Fluoride 1/6months deleted. IU
Fluoride sampling frequency to change from
1/month to 1/ 6 months. Modifications to take
effect 3/1/2011.
3

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
5/6/2011 Modification Permit modified Phenol limit removed monitor
onlyl/6 months, COD limit removed changed to
monitor only 1/month. Modification to take
effect 7/1/2011. POTW sampling for COD's &
Phenols dropped.
4/2/2014 Renewal/ Permit renewed and modified. Flow limit
Modification changed from .360 mgd to .300 mgd
4/2/2019 Renewal/ Permit renewed and modified.
Modification
Modifications:
Cyanide sampling frequency changed from
2/month to 1/month.
Molybdenum sampling frequency changed
from 1/month to 2/6 months.
Fluoride sampling deleted.
4

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
and/or Municipality.
2.) The Permittee is hereby authorized to continue operation of and discharge
wastewater from the following treatment or pretreatment facilities. These
facilities must correspond to the treatment units listed on both the application
and inspection forms.
IU Treatment Units
List all Treatment Units: Descriptions:
Flow meter Isco Model 4230
Sampling Isco Sampler
equipment
3.) The Permittee is hereby authorized to, if required by the Control Authority
and/or Municipality and after receiving Authorization to Construct (A to C)
from the Control Authority and/or Municipality, 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# 01 , Description of Discharge:
Non-contact cooling water,domestic wasterwater and process wastewaters.
E.) Schematic and Monitoring Locations:
The facility schematic and description of monitoring location(s) given below must
show enough detail such that someone unfamiliar with the facility could readily find
and identify the monitoring location(s) and connection to the sewer. Include and
identify all regulated pipes.
5

Receiving POTW name=> Town of Yadkinville IU name=> Unifi,Inc.
IUP, Part 1 Section F:
Receiving POTW NPDES#=> NC0020338 IUP#=> 0005
Effluent Limits and Monitoring Requirements Effective date for these Limits=> 4/2/2019 Pipe#_> 01
Expiration date for these Limits=> 3/31/2024 40 CFR#=> N/A
The Permittee may discharge from this specific if not applicable put N/A
THE LIMITS ON THIS PAGE ARE,(Check one below):
Pipe number according to these specific dates, LIMITS for ENTIRE permit period => )
effluent limits, and monitoring requirements INTERIM Limits for period# 1 =>
INTERIM Limits for period#2 =>
FINAL Limits Page =>
Concentration Limits Mass Limits Monitoring Frequency
Sample Required
Collection Laboratory
Monthly Monthly Method Detection
Daily Max Average Units Daily Max Average Units By Industry By POTW (C or G) Level
1 Flow 0.300 MGD Continuous/Daily* Continuous/Daily* Meter*
2 BOD 500 lbs Once/Month Once/6 months C 2.0
3 TSS 250 lbs Once/Month Once/6 months C 1.0
4 Temperature 104°F °F Daily Once/6 months G
5 PH 6.0-11.0 s.u. i Daily Once/6 months G 0.1 S.U.
OTHER PARAMETERS; Please List Alphabetically
6 Cadmium Monitor only Mg/1 Twice/6 Months Once/6 months C 0.002 mg/I
7 Chromium 0.0540 lbs Twice/6 Months Once/6 months C 0.005 mg/l
8 COD Monitor only Mg/1 lbs Once/Month C 10 mg/1
9 Copper 0.5945 lbs Twice/6 Months Once/6 months C 0.002 mg/1
10 Cyanide 0.0270 lbs Once/Month Once/6 months G 0.005 mg/1
11 Lead 0.1351 lbs Twice/6 Months Once/6 months C 0.005 mg/1
12 Molybdenum Monitor only Mg/1 Twice/6 Months Once/6 months C 0.1 mg/1
13 Nickel f 0.1276 lbs Twice/6 Months Once/6 months ' C 0.010 mg/1
14 Oil&Grease 150 lbs Twice/6 Months Once/6 months ' G 5.0 mg/1
15 Phenol Monitor only Mg/1 lbs Once/6 Months G 0.01 mg/1
16 Zinc 1.8074 lbs Twice/6 Months Once/6 months C 0.01 mg/1
17
18
19
20
21
22 * See part I,G,3
and part III, 2.
6

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
G.) Definitions and Limit Page(s) notes:
In addition to the definitions in the Town of Yadkinville 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 Daily Monitoring Frequency
Daily Monitoring Frequency as specified in this IUP shall mean each day of
discharge.
3. Continuous/Daily Monitoring Frequency
For flow, "continuous" refers to the requirement to use a continuous
recording discharge flow meter. See Part III, 2 for more details. For
flow, "daily" shall mean the permittee shall read the flow meter
totalizer every day, including weekends and holidays, convert this to a
daily flow, and report these daily flows to the Control Authority with
the report due under Part II, 2.
4. 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.
5. Instantaneous measurement
An Instantaneous measurement for the monitoring requirements of this IUP
is defined as a single reading, observation, or measurement.
7

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 Permittee 19. Transferability
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
Control Authority and/or Municipality, postmarked no later than the twentieth 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 Control
Authority and/or Municipality and shall be sent to the following address:
Grant Trivette
Pretreatment Coordinator
Town of Yadkinville
P.O.Box 816
Yadkinville,NC 27055
b.) If the sampling performed by the permittee indicates a violation, the permittee shall notify
the Control Authority and/or Municipality within 24 hours 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 Control Authority and/or Municipality within 30 days after
becoming aware of the violation.
8

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
c.) If no self-monitoring is required by this IUP, and the sampling performed by the Control
Authority and/or Municipality indicates a violation, the Control Authority and/or
Municipality shall repeat the sampling and analysis and receive the results of the repeat
analysis 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 Control Authority and/or Municipality. The Control
Authority and/or Municipality 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 Control Authority and/or Municipality 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 Control Authority and/or Municipality. 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 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.
9

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
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 Department of Environment
and Natural Resources, Division of Water Quality, the Regional Administrator of the
Environmental Protection Agency, the Control Authority and/or Municipality, 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 three 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
Control Authority and/or Municipality. As required by the Sewer Use Ordinance, effluent data
shall not be considered confidential.
12. Duty to Provide Information
The permittee shall furnish to the Director of Public Works or his/her designees, within a
reasonable time, any information which the 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 Perry Williams OR Grant Trivette 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
10

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
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 Control Authority and/or Municipality 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, 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 Town.
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 Control Authority and/or Municipality Sewer Use Ordinance and North
Carolina General Statute or implementing regulations.
11

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
23. Re-Application for Permit Renewal
The permittee is responsible for filing an application for reissuance of this permit at least 180
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 Control Authority and/or Municipality of any planned
significant changes to the permittee's operations or system which might alter the nature, quality,
or volume of its wastewater at least 180 days before the change. The permittee shall not begin
the changes until receiving written approval from the Control Authority and/or Municipality.
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 Control Authority and/or
Municipality;
(d) new or changed product lines;
(e) new or changed manufacturing processes and/or chemicals;or
(f) new or changed customers.
26. Construction
No construction of pretreatment facilities or additions thereto shall be begun until Final Plans
and Specifications have been submitted to the Control Authority and/or Municipality 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
(I)), 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.
12

Industrial User Pretreatment Permit (IUP)
PART II
General Conditions
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, 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 Control Authority and/or Municipality
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 Control Authority and/or Municipality 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 Control Authority and/or Municipality.
13

Industrial User Pretreatment Permit (IUP)
PART III
Special Conditions
1. Slug/Spill Control Measures
The permittee shall provide protection from accidental and slug discharges of
prohibited materials and other substances regulated by this permit. The permittee
shall implement and maintain exsisting Spill Prevention Control &
Countermeasure Plan approved by The Town of Yadkinville.
In addition to the requirements in Part II, 30, the Permittee shall complete
installation and/or commence implementation, operation, and/or maintenance of
the following specific protection Measures, Activities, Plans. Etc. (Items without
specific completion dates, or marked as "Continuous." must be performed for the
entire duration of the permit):
Required
Completion/
Implementation
Description of Measure, Activity, Plan, etc. Date
Spill Prevention Control& Countermeasure Plan updated and a Continuous
copy on file at Town of Yadkinville WWTP .
The permittee shall provide updates to the Control Authority as required by Part II, 30, of
this IUP. Modifications to the measures shall be approved by the Control Authority prior
to installation/implementation. If a measure fails, the Control Authority shall be notified
within 24 hours.
2. Flow Measurement Requirements
(For SIUs with discharge flow meters)
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 ISCO 4230 Flow meter at sample point for pipe 01. The
meter shall be calibrated every 6 Months. Modifications to the flow metering
equipment shall be approved by the Control Authority prior to installation. If a
14

Industrial User Pretreatment Permit (IUP)
PART III
Special Conditions
required flow measurement device fails, the Control Authority shall be notified
within 24 hours. The permitee shall submit a copy of the certified flow calibration
report to Control Authority.
3. 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.
4. 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 8A .0202.
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 8A .0202. 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.
Until the above certified operator requirements come into effect, the
permittee shall at all times have appropriately trained operators capable of
properly operating all units. Permittee shall notify POTW of designated
operators including credentials, within 24 hours of staff change.
15

IUP Synopsis
A. IUP Basic Information
Receiving POTW name: POTW NPDES#:
Town of Yadlanville NC0020338
IUP name: IUP Number:
Unifi,Inc. 0005
IUP Effective date: Pipe Numbers,list all regulated pipes:
4/2/2019 01
IUP expiration date: IUP 40 CFR#,if applicable:
3/31/2024 N/A
B. IUP Survey&Application form
Attach a completed copy of the Industrial User Wastewater Survey&
Application Form(see appendix 6-A)
C. IU Inspection form
Attach a copy of an Industrial User Inspection Form(see chapter 7) completed
by the Control Authority within the past 12 months.
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 for the permittee to determine what ranges of
concentrations are currently being discharged. To account for sample
variability a factor was applied to the monitoring data to determine the
permit limit. Permit limits assigned by the Local IUP Control Authority can
not results in an Over Allocation situation for any pollutants.
BOD, TSS, Chromium, COD, Copper, Cyanide, Lead, Nickel,
Oil&Grease, Phenol, Zinc.
1

•
IUP Synopsis
RATIONALE #2a:
Categorical Industrial Limits, with no Over Allocation situation:
Check here if Combined Wastestream Formula (CWF) or other categorical
limits calculations were used. If used, Please attach calculations: (see CWF
Spreadsheet, Appendix 6-F)
Were used(attach calculations)
Were not used II
The following pollutants were assigned numerical limits in this IUP based on
the categorical regulations. These limits do not result in over allocations.
RATIONALE #3a:
Over Allocation Prevention, with IU pollutant reduction:
The following pollutants were assigned numerical limits in this IUP based on
allocating the Maximum Allowable Industrial Loading (MAIL) determined
with the Headworks Analysis (HWA) among all Industrial Users. The total
loading of each pollutant from all permitted discharges does not exceed the
MAIL. These limits do not result on over allocations.
RATIONALE #3b:
Interim Limits for IU pollutant reduction:
The following pollutants were assigned interim numerical limits in this IUP to
allow time for the industry to come compliance with final limits that will not
in over allocations.
2

IUP Synopsis
RATIONALE #4:
4.) Other Rationale for Limitations:
The following rationale was used for developing IUP Limits.
Parameter Rationale
pH, Temp ! SUO
RATIONALE #5a:
Non-Categorical Parameters where No Limit needed or assigned in an IUP:
The following pollutants were not assigned numerical limits in this IUP
because the loadings for these pollutants from this IU were less than 5% of
the MAHL. The loading of these pollutants from this IU is considered
insignificant at this time.
Pollutant 1 Avg SIU mg/1 ' Avg SIU lbs/day 5% MAHL, lbs/day
Cadmium j <0.001 0.0018 0.0025
Fluoride 1.09 1.3605 1.1246
Molybdenum 0.0145 0.01045 0.0044
RATIONALE #5b:
Categorical Parameters with Waived Monitoring:
Monitoring is waived for the following categorical parameters (attach
documentation of waiver justification).
3

/ //-/
uiviri
March 13, 2019
RECEIVED/DENRIDWR
Mr. Grant Trivette
Pretreatment Supervisor MAR 19 2019
Town of Yadkinville
PO Drawer 816 Water Resources
Permitting Section
Yadkinville,NC 27055-0816
RE: Unifi Manufacturing Inc
IUP# 0002 and#0005
Request for Modification of Permit Monitoring Requirements
Dear Mr. Trivette:
Unifi Manufacturing Inc. would like to request that Cyanide monitoring be reduced to
one sample per month instead of two samples per month. We would like this request to
become effective on the new IUP Permits to be issued in April 2019.
If you require additional information or have any questions please advise.
Sincerely,
Lisa Haynes
Corporate Environmental Manager

7)) F-1:
NA 11/1
uiviri
October 31, 2018
Mr. Grant Trivette
Pretreatment Supervisor
Town of Yadkinville
PO Drawer 816
Yadkinville, NC 27055-0816
RE: Unifi Manufacturing Inc
IUP # 0002 and#0005
Request for Modification of Permit Monitoring Requirments
Dear Mr. Trivette:
Based on data for CY2017 Unifi Manufacturing Inc would like to reduce monitoring
frequency for Cyanide from 2 samples per month to 1 sample per month at both
manufacturing facilities.
In addition, Unifi would like the Town of Yadkinville to modify the sampling frequency
of Molybdenum, Oil and Grease, Cadmium, Chromium, Lead, Nickel, Copper, Zinc,
Fluoride and Phenols from 2 sample collection every 6 months to 1 sample collection
every 6 months if this will allow compliance with your NPDES requirements.
If you have any questions or require additional information please contact me.
Sincerely,
Lisa Haynes
Corporate Environmental Manager

Industrial User Wastewater Survey o r/
& Permit Application
COVER PAGE
Company Name: Unifi,Manufacturing,Inc.
Name of responsible person on site at the facility authorized to represent the Name of alternative on site person familiar with the day to day operations,
company in official dealings with the Sewer Authority and/or the City. environmental permitting requirements, monitoring, record keeping, and
LISA HAYNES data management..
RICHARD REAVIS
Title ENVIRONMENTAL MGR Years with firm 14 Title LEAD MAINTENANCE Years with firm 20+
Phone# [phone] Fax# [phone] Phone# [phone] Fax# [phone]
Physical street address of facility Official mailing address,if different. Note if same.
1032 Unifi Industrial Road. P.O. BOX 1437
City YADKINVILLE State NC Zip 27055 City REIDSVILLE State NC Zip 27323-1437
The information provided by you on this questionnaire serves two functions:
1. The information is used to determine if your facility needs an Industrial
User Pretreatment Permit (IUP) for the discharge of wastewater to the
local sewer.
2. If an Industrial User Pretreatment Permit (IUP) is required, this survey
serves as the application for an Industrial User Pretreatment Permit(IUP).
Requests for confidential treatment of information provided on this form shall be governed by
procedures specified in 40 CFR Part 2. In accordance with Title 40 of the Code of Federal Regulations
Part 403, Section 403.14 and the Local Sewer Use Ordinance (SUO), information and data provided in
this questionnaire which identifies the content, volume and frequency of discharge shall be available to
the public without restriction.
This is to be signed by an authorized official of your firm,as defined in the Local Sewer Use Ordinance or the NC Model
Sewer Use Ordinance, Section 1.2,after completion of this form.
I certify under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified
personnel properly gather and evaluate the information submitted. Based upon my inquiry of
the person or persons who manage the system, or those persons directly responsible for
gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate and complete. I am aware that there are significant penalties for
submitting false 'nformation, including the possibility of fine and/or imprisonment for
knowi g violat'o s.
a 100 31 J! g
Signature of Author ed Representative Date
listed above (seal if applicable)
Title: IU Wastewater Survey & Permit Application
File name: I:EEnvironmental Data and Reports\Yadkinville MISC\IWS YDK T5 2018.doc
Revision date: 12/30/97 Page 1 of 188

Industrial User Wastewater Survey
& Permit Application
1. Provide a brief narrative description of the type of business, manufacturing
processes,or service activities your firm conducts at this site.
Polyester yarn texturing,air jet texturing of polyester and nylon fiber,Polyester fiber spinning
2. List the primary products produced at this facility:
Textured polyester and nylon, Spun polyester fiber
3. List raw materials and process additives used:
Polyester fiber, yam lubricants(natural&mineral oils),paper tubes,polyester chip (white and color)
4. Are biocides added to any water discharged to the POTW,
if yes describe:
Bromine, chlorinated isothiazolins Yes X
No •
5. Describe weekly production schedule, including shifts worked per day,
employees per shift,and primary operation during shift.
2 - 12 hour shifts per day(24/7)
6. Production process is: Check, if all continuous X
Check, if all batch
If both please enter, %continuous= % %Batch=
Title: FU Wastewater Survey & Permit Application
File name: 1:1Environmental Data and ReportsWadkinvilk MISCIIWS YDK T5 2018.doc
Revision date: 12/30/97 Page 2 of 188

Industrial User Wastewater Survey
& Permit Application
7. Does production vary significantly(+- 20 %)by season. Describe.
Yes
No X
8. Are any significant (+- 20 %) changes in production that will affect wastewater
discharge expected in the next 5 years. If yes,please describe.
General Business conditions for textile industry Yes
No x
9. List all current waste haulers. Give name, address, phone numbers, volume and
materials hauled off.
A&D Environmental,P.O. box 963,Burlington,NC 27216-0963 [phone]
Fluorescent light bulbs,clean out oil and water seperators
Ectoech,Inc. P.O. Box 1623 Denver,NC 28037(704)489-8703
Used oil, oily wastewater from Smog Hogs, Spin Finish- oily wastewater
10. Attach a copy of laboratory analyses performed in the last year on the wastewater
discharge(s) from your facilities. Summarize data on the attached Data Summary
Form.
11. Attach sketch or schematic showing sampling points and all connections to the sewer.
•
12. Complete the Wastewater Pollutants Checklist attached to this Survey.
Title: IU Wastewater Survey & Permit Application
File name: I:1Environmental Data and Reports\Yadkinville MISCUWS YDK T5 2018.doc
Revision date: 12/30/97 Page 3 of I88

Industrial User Wastewater Survey
& Permit Application
13. Do you have, or have you ever applied for, been issued, or been denied
an NPDES permit to discharge to the surface waters or storm sewers of
North Carolina? If yes, list all other NPDES permits, permit numbers,
dates, and names used to apply for them, or reason denied.
If yes: Permit,#,date,applicant name Unifi,Inc, Yes X
If yes: Permit,#,date,applicant name No
Doyou have, or haveyou ever applied for or been issued an Industrial
14. pP
User Pretreatment Permit (IUP) to discharge wastewater to the sewer
collection system. If yes, list all other IUP permits, permit numbers,
dates, and names used to apply for them.
If yes: Permit,#,date,applicant name Ulllfi, Inc. Yes X
IUP#0005 &#0002
If yes: Permit,#,date,applicant name No
15. Do you have, or have you ever applied for or been issued any other
Environmental Permits (for example; air, RCRA, groundwater,
stormwater, general, Non-Discharge, septic tank, etc.). If yes, list all
other permits, permit numbers,dates, and names used to apply for them.
If yes: Permit type,#,date,applicant name Unifi, Inc. Yes X
Air 01512G13, 08161R04
If yes: Permit type,#,date,applicant name No
If yes: Permit type,#,date,applicant name
16. Is a Spill Prevention Control and Countermeasure (SPCC) Plan
prepared for this facility?
Yes X
No
17. Is a Spill /Slug Control Plan required by the POTW, prepared for this
facility?
Included in Spill Plan Yes X
No
Title: IU Wastewater Survey & Permit Application
File name: I::\Environtnental Data and ReportsWadkinville MISC\IWS YDK T5 2018.doc
Revision date: 12/30/97 Page 4 of 188

Industrial User Wastewater Survey
& Permit Application
18. Do you have any underground storage tanks at your facility? If yes, list
contents and volume of each tank.
Oil and Grease traps- 1000 gallons
Yes X
No
19. Do you have any above ground storage tanks at your facility? If yes, for
each tank, list the contents, volume, whether the tank has any spill
prevention or containment devices, such as dikes, and procedures for
draining any containment devices.
Yes X #of Tanks 15
No
Tank Volume Contents Containment
9,095 gallons HTM Collection Dike
(4) 1,300 gallons Spin Finish Dike
(5) 790 gallons Spin Finish Dike
(4) 10,000 gallons Coning Oil Dike
500 gallons Used Oil Stored inside facility,
No drains in storage
area
Title: lU Wastewater Survey & Permit Application
File name: 1:1Environmental Data and ReportsWadkinville MISCIIWS YDK T5 2018.doc
Revision date: 12/30/97 Page 5 of 188

Industrial User Wastewater Survey & Permit Application
PART II, Water Supply, Use, & Disposal Worksheet:
Water Used for: Water Avg. Max. M E Disposal Avg. Max. M E
gal/day gal/day e st gal/day gal/day e st
Source(s) a i Method(s) a i
s m s m
u at u at
re a re c
d d d d
(see Source List below) (see Disposal List below)
1. Process water
2. Washdown water 1 3,000 3,00011 X 2 3,000 3,00011 X
3. Water into product ■ �■.
4. Air Quality Permitted units 3,000 3,000■ 3,000 3,.000■©
5. Domestic-toilets, drinking,cafe 27,000 27,000■© 27,000 27,000111111
6. Cooling water, Process NON-Contact ■. ■EI
7. Boiler/Cooling tower blowdown 1111111111 ■■ 111.
8. Cooling water, HVAC 267,000 267,000.E 267,000 267,000■©
9. Other: _■■ 1111111111■■
tea. 11111.111111.11111101
Totals=> 300,000 300,000 Totals => 300,000 300,000
Typical Water Sources: Possible Water Disposal Methods
1. City/Public supply 1. Sanitary sewer,with pretreatment
2. Private wells, drinking 2. Sanitary sewer,without pretreatment
3. Groundwater remediation wells 3. Storm sewer
4. Private ponds 4. Surface waters of NC
5. Surface waters of NC, please identify 5. Evaporation
6. Include others if applicable 6. Land applied
7. To groundwater
8. Septic Tank
9. Waste Haulers(identify)
10. Water into Product
11. Include others, if applicable
Title: IU Wastewater Survey & Permit Application
File name: I:\Environmental Data and Reports\Yadkinville MISC\IWS YDK TS 20I8.doc
Revision date: 12(30/97 Page 6 of 188

PART III, PRETREATMENT FACILITIES:
Are there any pretreatment devices or processes used for treating wastewater
before being discharged to the sewer? Check all that are present, and describe.
No pretreatment facilities => X
1. Flow equalization Aerated equalization=>
NON-Aerated equalization=>
Total volume of equalization (million gal.) =>
2. Activated Carbon Yes No X Describe any, if present.
3. Activated Sludge Yes No . X
4. Air Stripping Yes No X
5. Centrifugation Yes No X
6. Chemical Precipitation Yes No X
7. Chlorination Yes No X
8. Cyanide Destruction Yes No X
9. Cyclone Yes No X
10. Dissolved Air Floatation Yes No X
11. Filtration Yes No X
12. Flocculation Yes No X
13. Grease Trap Yes X No
14. Grit Removal Yes No X
15. Ion Exchange Yes No X
ad
16. Neutralize, pHust Yes No X j
17. Other Biological Treatment Yes No X
18. Ozonation Yes No X
19. Reverse Osmosis Yes No X
20. Screening Yes No X
21. Sedimentation Yes ' No X
22. Septic Tank Yes No X
23. Silver Recovery Yes No X
24. Solvent Separation Yes No X
25. Spill protection Yes X No
List any others.
Title: IU Wastewater Survey & Permit Application
File name: l:\Environmental Data and Reports\Yadkinville MISCIIWS YDK T5 2018.doc
Revision date: 12/30/97 Page 7 of 188

PART IV, CATEGORICAL INFORMATION:
1. When were operations started at this facility Facility start up date May, 1996
2. List all Standard Industrial Classification(SIC) codes for your facility.
These may be found on State Unemployment forms,tax forms,
accounting records,or from the Chamber of Commerce.
2282
2281
3. Has this facility ever been considered a Categorical Industrial User
(CIU)as described by the Code of Federal Regulations (40 CFR)?
If yes,give complete 40 CFR number=> 40 CFR 410
No
4. Are any other facilities owned and/or operated by your company
•
permitted as Categorical Industrial Users(CIUs)as described by the
Code of Federal Regulations(40 CFR)? •
If yes please give name(s), location, and 40 CFR number. Yes 410
No
•
Title: IU Wastewater Survey & Permit Application
File name: [:\Environmental Data and Reports\Yadkinville MISC\IWS YDK T5 2018.doc
Revision date: 12/30/97 Page 8 of 188

PART IV, CATEGORICAL INFORMATION:
continued)
5. Check any activities listed below that are performed at your facility:
Check 40 Industrial Activity Check 40 Industrial Activity
below CFR# below CFR#
467 Aluminum Forming 432 Meat products
427 Asbestos Manufacturing 433 Metal finishing
461 Battery Manufacturing 464 Metal molding and casting
431 Builders paper&board mills 436 Mineral mining and processing
407 Canned&preserved fruits&veg. 471 Nonferrous Metal, Form&Powders
408 Canned&preserved seafood 421 Nonferrous Metals Manufacturing
458 Carbon black Manufacturing 414 OCPSF,Organic Chemicals, Plastics,
411 Cement Manufacturing & Synthetic Fiber Manufacturing
437 Centralized Waste Treatment 435 Oil&gas extraction
434 Coal Mining 440 Ore mining and dressing
465 Coil Coating 446 Paint formulating
468 Copper Forming 443 Paving and roofing materials Mfg.
405 Dairy products processing 455 Pesticide Manufacturing
469 Electrical,electronic components 419 Petroleum Refining
413 Electroplating 439 Pharmaceutical Manufacturing
457 Explosives Manufacturing 422 Phosphate Manufacturing
412 Feedlots 459 Photographic supplies
424 Ferro allay Manufacturing 463 Plastics molding and forming
418 Fertilizer Manufacturing 466 Porcelain enameling
464 Foundries,Metal Mold&Casting 430 Pulp,paper,and paperboard
426 Glass Manufacturing 428 Rubber Manufacturing
406 Grain mills 417 Soap&Detergent Manufacturing
454 Gum&Wood Chemicals Mfg. 423 Steam Electric power Generation
460 Hospitals 409 Sugar processing
447 Ink formulating X 410 Textile Mills
415 Inorganic chemical Manufacturing 429 Timber products processing
420 Iron&Steel Manufacturing 442 Transportation Equipment Cleaning
425 Leather Tanning&Finishing Others
� 1
Title: IV Wastewater Survey & Permit Application
File name: I:1Environmental Data and ReportslYadkinville MISC\1WS YDK T5 2018.doc
Revision date: 12/30/97 Page 9 of 188

Wastewater Pollutant Checklist
Chemical Name EPA Check if Check if Check if Check if Concentration
Storet Present at Absent at Present in Absent in in Discharge,
Code Facility Facility Discharge Discharge if Known
(mg/i)
Acid Extractable Organics
2-Chlorophenol 34586 X X
2.4-Dichlorophenol 34601 X X
2,4-Dimethylphenol 34606 X X
2,4-Dinitrophenol 34616 X X
2-Methyl-4,6-dinitrophenol 34657 X X
4-Chloro-3-methylphenol 34452 X X
2-Nitrophenol 34591 X X
4-Nitrophenol 34646 _ X X
Pentachlorophenol 39032 X X
Phenol 34694 X X
2,4,6-Trichlorophenol 34621 X X
Base Neutral Organics
1,2,4-Trichlorobenzene 34551 X X
1,2-Dich lorobenzene 34536 X X
1,2-Diphenylhydrazine 34346 _ X X
1,3-Dichlorobenzene 34566 X X
1,4-Dichlorobenzene 34571 _ X X
2,4-Dinitrotoluene 34611 X X ,
2,6-Dinitrotoluene 34626 X _X
2-Chloronaphthalene 34581 X X
3,3-Dichlorobenzidine 34631 X X
4-Bromophenyl phenyl ether 34636 X X
4-Chlorophenyl phenyl ether 34641 X X
Acenaphthene 03405 X X
Acenaphthylene 34200- X X
Anthracene 34220 X X
Benzidine 39E20 X X
Benzo(a)anthracene 34526 X X
Benzo(a)pyrene 34247 X X
Benzo(b)fluoranthene 34230 X X
Benzo(ghi)perylene 34521 X X
Benzo(k)fluoranthene 34242 X X
Bis(2-chloroethoxy)methane 34278 X X
Bis(2-chloroethyl)ether 34273 X X
Bis(2-chloroisopropyl) ether 34283 _ X X `
Bis(2-ethylhexyl)phthalate 39100 X X •
Butyl benzyl phthalate 34292 X X '
Chrysene 34320 X X
Di-n-butyl phthalate 39110 X _ X
•
•
Title: ID Wastewater Survey & Permit Application
File name: 1:\Environmental Data and ReportslYadkinville M1SCIIWS YDK TS 2018.doc
Revision date: 12/30/97 Page 10 of 188

Wastewater Pollutant Checklist
I EPA Check if Check if Check if Check if Concentration
Chemical Name Storet Present at Absent at Present in Absent in in Discharge,
Code Facility Facility Discharge Discharge if Known
(mg/l)
Base Neutral Organics (continued)
Di-n-octyl phthalate 34596 X X
Dibenzo(a,h)anthracene 34556 X X
Diethyl phthalate 34336 X X
Dimethyl phthalate 34341 X X
Fluoranthene 34376 X X
Fluorene 34381 X X
Hexachlorobenzene 39700` X _ X
Hexachlorobutadiene 34391 X X
Hexachlorocyclopentadiene 34386 X X
Hexachloroethane 34396 X X
Indeno(1,2,3-cd) pyrene 34403 X X
I Isophorone 34408 X X
N-nitroso-di-n-propylamine 34428 X X
N-nitrosodimethylamine 34438 X X
N-nitrosodiphenylamine 34433 X X
Naphthalene 34696 X X
Nitrobenzene 34447 X X
Phenanthrene 34461 X X
Pyrene 34469 X X
Metals
X
Aluminum 01104X
Antimony 01097 X X
Arsenic 01002 X X
Beryllium 01012 X X
Cadmium 01027 X X <0.002
Chromium 01034 X X .007
Copper 01042 X X .339
Lead 01051 X X <0.005
Mercury 71900 X X
Molybdenum 01062 X X <0.005
1
Nickel 01067 X X .015
Selenium 01147 X X
Silver 01077 X X
•
Thalium 00982 X X
Zinc D1092 X , X _ .305
Title: RI Wastewater Survey & Permit Application
File name: 1:1Environmental Data and ReponslYadkinvilie M1SCt1WS YDK T5 2018.doc
Revision date: 12/30/97 Page 11 of 188

Wastewater Pollutant Checklist
Chemical Name EPA Check if Check if Check if Check if Concentration
Storet Present at Absent at Present in Absent in in Discharge,
Code Facility Facility Discharge Discharge if Known
(mg/1)
Other Inorganics
Barium 01007 X X
Chloride 00940 X X,
Cyanide 00720 X. X <0.005
,Fluoride 00951 X X .788
Purgeable Volatile Organics
1,l,l-Trichloroethane 34506 X X
1,1,2,2-Tetrachloroethane 34516 X X
1,1,2-Trich loroethane 34511 X X
1,1-Dichloroethane 34496 X X
1,1-Dichloroethylene 34501 X X
I,2-Dichloroethane 34531 X X
1,2-Dichloropropane 34541 X X
2-Chloroethyl vinyl ether 34576 X X
Acrolein 34210 X X
Acrylonitrile 34215 X X
Benzene 34030 X X
'Bromodichloromethane 32101 X X
Bromoform 32104 X X
Bromomethane 34413 X X
Carbon tetrachloride 32102 X _ X
Chlorobenzene 34301 X X
Chloroethane 34311 X X
Chloroform 32106 X X
Chloromethane 34418 X X
cis 1,3-Dichloropropene 34704 X X
Dibromochloromethane 32105 X X
Ethylbenzene 34371 X X
Methylene chloride 34423 X X
Tetrachioroethylene 34475 X X •
Toluene 34010 X X •
trans 1,3-Dichloropropene 34699 X X
trans-1,2-Dichloroethvlene 34546 X X
Trichloroethylene 39180 X X
Trichlorofluoromethane 34488 X X
Vinyl chloride 1 39175 _ X X
Others
Xylene X X
Title: IU Wastewater Survey & Permit Application
File name: 1:\Environmental Data and Reports\Yadkinville MISC\IWS YDK T5 2018.doc
Revision date: 12/30/97 Page 12 of 188

Data Summary Form
-
Town of <=Receiving POTW
Yadkinville
<= Receiving NPDES #
Unifi, Pipe 01 <= Specific Sample Location!
Inc.
0005 i.e., Give IU Name, IUP#, and/or pipe#
BOD TSS COD
Lab=> Laboratory performing analysis=> R&A Labs R&A Labs R&A Labs
MDL W> Laboratory Method Detection Limits=>
Notes=> Notes=>
Q = Flow
Sample Date Notes about Sample M=Metered Conc. Results Conc. Results Conc. Results
ID, or Sample E=Estimated from Lab from Lab from Lab
Count Collected
mgd gal/day <? mg/1 <? mg/1 <? mg/1
1 1/11/17 M .138 138000 167 224 585
2 2/8/17 M .167 167000 272 306 420
3 3/8/17 M .139 139000 104 69.6 330
4 4/5/17 M .166 166000 124 372 312
5 5/3/17 M. .142 142000 109 223 273
6 6/28/17 M .156 156000 110 30.3 550
7 7/12/17 M .196 196000 144 225 357
8 8/9/17 _ M .185 185000 74.8 17 290
9 9/6/17 M .152 152000 139 31.5 373
10 10/4/17 M .132 132000 224 32.8 606
11 11/8/17 M .153 153000 108 279 345
12 12/6/17 M .153 153000 118 87.6 415
etc
TNS => Total number of samples=> 12 12 12
Max.value=> Maximum data value(mg/1)=> 272 372 606
Avg.(use 1/2 BDL) _> Avg.data value,Include BDL values as 1/2 detection limit=> 141 158 405
Title: N Wastewater Survey & Permit Application
File name: I:1Environmental Data and Reports\Yadkinville MISG'IWS YDK T5 2018.doc
Revision date: 12/30/97 Page 13 of 188

Data Summary Form
Town of Yadkinville <= Receiving POTW
<=Receiving NPDES #
Unifi, Inc. <= Specific Sample Location!
0005 i.e., Give IU Name, IUP#,and/or pipe#
TSS
Other Other
Lab=> R&A Labs R&A Labs
MDL=>
Notes=>
Sample Date Sample Conc. Results Conc. Results Conc. Results Cone. Results Conc. Results Conc. Results
ID or Collected from Lab from Lab from Lab from Lab from Lab from Lab
Count
<? mg/I <? mg/1 <? mg/1 <? mg/1 <? mg/I <? mg/l
1 5/23/17 15.2
2 5/24/17 9.4
3 5/25/17 15
4 5/26/17 34
5 9/19/17 31.3
6 9/20/17 116
7 9/21/17 81.1
8 9/22/17 21.6
9
10
11
12
etc
TNS => 8
Max. Value=> 116
Avg. (usel/2 BDL)=> 40.5
Title: IU Wastewater Survey & Permit Application
File name: I:\Environmental Data and Reports\Yadkinville MISCMWS YDK T5 2018.doc
Revision date: 12/30/97 Page 16 of 188

Data Summary Form
Town of Yadkinville <= Receiving POTW
<= Receiving NPDES #
Unifi, Inc. <= Specific Sample Location!
0005 i.e., Give IU Name, IUP#, and/or pipe #
Cyanide Other Other
Lab=> R&A Labs R&A Labs
MDL—>
Notes=>
Sample Date Sample Conc. Results Conc. Results Conc. Results Cone. Results Conc. Results Conc_ Results
ID or Collected from Lab from Lab from Lab from Lab from Lab from Lab
Count
<? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1
1 1/18/17 < 0.005
2 2/22/17 < 0.005
3 3/22/17 < 0.005
4 4/26/17 < 0.005
5 5/17/17 < 0.005
6 6/28/17 < 0.005
7 7/19/17 < 0.005
8 8/16/17 < 0.005
9 9/20/17 < 0.005
10 10/18/17 < 0.005
11 11/22/17 < 0.005
12 12/20/17 < 0.005
etc
TNS 12
Max. Value=> <0.005
Avg. (usel/2 BDL)_> .0025
Title: It)Wastewater Survey & Permit Application
File name: I:EE3nvironmental Data and Reports\Yadkinville MISCIIWS YDK T5 2018.doc
Revision date: 12/30/97 Page 16 of 188

Data Summary Form
Town of Yadkinville <= Receiving POTW
<= Receiving NPDES #
Unifi, Inc. <= Specific Sample Location!
0005 i.e., Give lU Name, IUP#, and/or pipe#
Cyanide Oil&Grease Nickel Phenols Zinc
Lab=> R&A Labs R&A Labs R&A Labs R&A Labs R&A Labs R&A Labs
MDL—>
Notes =>
Sample Date Sample Cone. Results Conc. Results Conc. Results Conc.Results Conc. Results Conc. Results
ID or Collected from Lab from Lab from Lab from Lab from Lab from Lab
Count
<? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1
1 1/11/17 < 0.005
2 2/8/17 < 0.005 63.1 0.042 0.030 0.160
3 3/8/17 < 0.005
4 4/5/17 < 0.005
5 5/3/17 < 0.005 9.4 0.035 0.054 0.407
6 6/28/17 < 0.005
7 7/12/17 < 0.005 -
8 8/9/17 < 0.005 6.3 0.045 0.179
9 9/6/17 < 0.005 _
10 10/4/17 < 0.005
11 11/8/17 < 0.005 23.1 0.016 0.305
12 12/6/17 < 0.005
etc
TNS => 4 4 2 4
Max. Value—> 63.1 0.045 .054 .407
Avg. (usel/2 BDL) => 25.5 0.035 .042 .263
Title: IU Wastewater Survey & Permit Application
File name: I:1Environmental Data and Reports\Yadkinville MISCIIWS YDK T5 2018.doc
Revision date: 12/30/97 Page 15 of 188

Data Summary Form
Town of Yadkinville <= Receiving POTW
<= Receiving NPDES #
Unifi, Inc. <= Specific Sample Location!
0005 i.e., Give IU Name, IUP#,and/or pipe#
Molybdenum Phenols Chromium Cadmium Lead Fluoride
Lab=> R&A Labs R&A Labs R&A Labs R&A Labs R&A Labs R&A Labs
MDL=>
Notes=>
Sample Date Sample Cone. Results Cone. Results Conc. Results Conc. Results Conc. Results Conc. Results
ID or Collected from Lab from Lab from Lab from Lab from Lab from Lab
Count
<? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1
1 1/11/17 < 0.005
2 2/8/17 < 0.005 .019 < 0.005 < 0.002 < 0.005
3 3/8/17 < 0.005
4 4/5/17 < 0.005
5 5/3/17 < 0.005 < 0.005 < 0.002 < 0.005
6 6/28/17 < 0.005
7 7/12/17 < 0.005
8 8/9/17 < 0.005 0.007 < 0.002 < 0.005 .788
9 9/6/17 < 0.005
10 10/4/17 < 0.005
11 11/8/17 < 0.005 .090 < 0.005 < 0.002 < 0.005
12 12/6/17 < 0.005
etc
TNS => 12 2 4 4 4 1
Max. Value=> <0.005 .090 .007 <0.002 <0.005 .788
Avg. (use1/2 BDL)_> 0.0025 .055 0.004 0.001 .0025 .788
Title: IU Wastewater Survey & Permit Application
File name: 1:1Environmental Data and Reports\Yadkinville MISC\IWS YDK TS 2018.doc
Revision date: 12/30/97 Page 14 of 188

Data Summary Form
Town of Yadkinville <=Receiving POTW
<= Receiving NPDES #
Unifi, Inc. <= Specific Sample Location!
0005 i.e.,Give IU Name,IUP#, and/or pipe#
Nickel Zinc Oil and Grease Copper Other Other
Lab=> R&A Labs R&A Labs R&A Labs R&A Labs
MDL=>
Notes=>
Sample Date Sample Cone. Results Cone. Results Conc.Results Conc. Results Conc. Results Conc. Results
ID or Collected from Lab from Lab from Lab from Lab from Lab from Lab
Count
<? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1 <? mg/1
1 2/8/17 < 0.005 .354 12.9 .429
2 5/3/17 < 0.005 .238 51.7 .273
3 5/26/17 .218
4 8/9/17 .062 .445 109 .642
5 9/19/17 23.6 .405
6 9/20/17 19.1 .358
7 9/21/17 17.3 .361
8 9/22/17 10.3 .584
9 11/8/17 .013 .184 52.8 .253
10 11/28/17 .207
11 11/29/17 .205
12 11/30/17 - .241
etc 12/1/17 .231
TNS => 4 4 8 13
Max. Value=> .062 .445 109 .642
Avg. (usel/2 BDL)_> .020 .305 37.09 .339
Title: 1U Wastewater Survey & Permit Application
File name: 1:1Environmental Data and ReportsWadkinville MISC11WS YDK T5 2018.doc
Revision date: 12/30/97 Page 16 of 188

Industrial User Wastewater Survey
& Permit Application
Part V, Waste Reduction Information :
State Pretreatment Rule 15A NCAC 2H.0916 (c)(1)(M) requires Significant Industrial
Users to include a description of current and projected waste reduction (pollution
prevention) activities. The codes listed are standard EPA codes found on Toxic Release
Inventory and other environmental forms. Please check all applicable codes for your
facility related to wastewater discharge.
Current Projected Code Description
W13 Improved maintenance scheduling recordkeeping, or procedures
W14 Changed production schedule to minimize equipment and feedstock
changeovers
W19 Other changes in operating practices (explain briefly in comments)
W21 Instituted procedures to ensure that materials do not stay in inventory
beyond shelf-life
W22 Began to test outdated material-continue to use if still effective
W23 Eliminated shelf-life requirements for stable materials
W24 Instituted better labeling procedures
W25 Instituted clearinghouse to exchange materials that would otherwise
be discarded
W29 Other changes in Inventory control (explain briefly in comments)
W31 Improved storage or stacking procedures
W32 Improved procedures for loading, unloading and transfer operations
W33 Installed overflow alarms or automatic shutoff valves
W34 Installed secondary containment
W35 Installed vapor recovery systems
W36 Implemented inspection or monitoring program of potential spill or
leak sources
W39 Other spill and leak prevention (explain briefly in comments)
W41 Increased purity of raw materials
W42 Substituted raw materials
W49 Other raw material modifications (explain briefly in comments)
W51 Instituted recirculation within a process
Title: Ili Wastewater Survey&Permit Application
File name: 1:1Environmental Data and Reports\Yadkinville MISC\IWS YDK T5 2018.doc
Revision date: 12/30/97 Page 17 of 18

Industrial User Wastewater Survey
& Permit Application
Current Projected Code Description
W52 Modified equipment, layout, or piping
W53 Use of a different process catalyst
W54 Instituted better controls on operating bulk containers to minimize
discarding of empty containers
W55 Changed from small volume containers to bulk containers to
minimize discarding of empty containers
W58 Other process modifications (explain briefly in comments)
W59 Modified stripping/cleaning equipment
W60 Changed to mechanical stripping/cleaning devices (from solvents or
other materials)
W61 Changed to aqueous cleaners (from solvents or other materials)
W62 Reduced the number of solvents used to make waste more amenable
to recycling
W63 Modified containment procedures for cleaning units
W64 Improved draining procedures
W65 Redesigned parts racks to reduce dragout •
W66 Modified or installed rinse systems
W67 Improved rinse equipment design
W68 Improved rinse equipment operation
W71 Other cleaning and degreasing operation(explain briefly in comments)
W72 Modified spray systems or equipment
W73 Substituted coating materials used
W74 Improved application techniques
W75 Changed from spray to other system
W78 Other surface preparation and finishing(explain briefly in comments)
W81 Changed product specifications
W82 Modified design or composition of product
W83 Modified packaging
W89 Other product modifications (explain briefly in comments)
W99 Other (specify in comments)
Comments(Please list corresponding code)
Title: IU Wastewater Survey & Permit Application
File name: 1:EEnvironmental Data and ReportstYadkinville MISC\IWS YDK T5 2018.doc
Revision date: 12/30/97 Page 18 of 188