NC0024333_Industrial User (CM-25)_20220523

Monroe
North Carolina
May 20, 2022
Mr. Robert Engel
ORO Manufacturing Company RECEIVED
5000 Stitt Street
Monroe,North Carolina 28110 ! 2 3 2022DES
CERTIFIED MAIL
NCDEQ/DWR/NP
RETURN RECEIPT REQUESTED
Dear Mr. Engel:
Please find enclosed herein Industrial User Permit CM-25 authorizing ORO Manufacturing
Company to continue to discharge process wastewater to the City of Monroe sewer system for
further treatment at the City of Monroe Wastewater Treatment Plant through June 30, 2025 and
specifying the conditions governing this discharge. All Significant Industrial permits are subject
to review and approval by NCDWQ PERCS Unit. Please review this permit carefully in order to
meet all requirements.
Consistent with the provisions of§ 52.051 of the City's Sewer Use Ordinance, the terms and
conditions of this permit are binding upon the industrial user
§ 52.051 WASTEWATER PERMITS.
(I) Hearings.
(1) Initial Adjudicatory Hearings. An applicant whose permit is denied, or is granted
subject to conditions he deems unacceptable, a permittee/user assessed a civil penalty under §
52.999, or one issued an administrative order under § 52.120 shall have the right to an
adjudicatory hearing before the POTW Director or other hearing officer appointed by the POTW
Director upon making written demand, identifying the specific issues to be contested, to the
POTW Director within 30 days following receipt of the significant industrial user permit, civil
penalty assessment, or administrative order. Unless such written demand is made, within the time
specified herein, the action shall be final and binding and further appeal is barred. For modified
permits, only those parts of the permit being modified may be adjudicated. The hearing officer

shall make a final decision on the contested permit penalty, or order within 45 days of the receipt
of the written demand for a hearing. The POTW Director shall transmit a copy of the hearing
officer's decision by registered or certified mail.
Consistent with the provisions of§ 52.051 of the City's Sewer Use Ordinance, the terms and
conditions of this permit are binding upon the industrial user.
Should you require additional information please do not hesitate to contact me.
Respectfully,
Kevin Keesler
Pretreatment Coordinator
c: WWTP files
Mr. Russell Colbath
I:\8040 WWTP and Collection\Pretreatment program\Industries\ORO
City of Monroe • PO Box 69 • Monroe,NC 28111-0069
Tel: [phone] * Fax: [phone]
www.monroenc.org

City of Monroe WWTP
Municipality Name
hereafter in this permit to as the
Control Authority
PERMIT
Industrial User Pretreatment Permit(IUP)
To Discharge Wastewater Under the
Industrial Pretreatment Program
CM-25 - 433
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 City of Monroe
Sewer Use Ordinance. The following Industry,hereafter referred to by name or as the permittee:
Industry name,permittee:
ORO Manufacturing Company
Facility Located at Street Address:
5000 Stitt Street
City
Monroe
State,Zip
North Carolina, 28110
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 City of Monroe
listed below:
IUP Control Authority WWTP name:
City of Monroe WWTP
NPDES Number:
NC0024333
WWTP Address:
Post Office Box 69
State,Zip
Monroe,NC 28111-0069
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:
July 1,2022
Expiration date,this permit and the authorization to discharge shall
expire at midnight on this date:
June 30,2025
,57"ZQ-2_2
Date Director of Water Resources
Page:1
Effective Date:July 1,2022

IUP, Part I
Industrial User (IU) 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 POTW name: POTW NPDES#:
City of Monroe Wastewater Treatment Plant NC0024333
IUP Name: IUP Number:
ORO Manufacturing Company CM-25
IUP Effective date: Pipe Numbers,list all regulated pipes:
July 1,2022 01
IUP Expiration date: IUP 40 CFR#(if applicable),or N/A:
June 30,2025 433
B. IUP History:
Effective Date: Renewal or Modification: Description of modifications.
7/1/95
permit issued
Date Modified
7/1/98 permit renewal
Date Modified
9/21/98
Added monitor only for Be,
Hg,Mo,Se,Al
and added TTO limit and
change verbiage in SPCC
requirement
6/29/01 Permit Issued;dropped BOD,TSS,
NH3-n;changed limits for Cu,Pb,Cn,
Ni,Ag,Zn;changed verbiage PART I
(F) 1),PART II 17),PART II 29);
changed verbiage for TTO.
10/19/01 Permit modification for frequency of
Industry monitoring of flow
7/1/04 Permit issued;dropped monitor only for
Be,Hg,Mo, Se;Added monitor only for
Fluoride;changed verbiage PART III 5.
IUP#=>CM-25
Page:2
Effective Date:July 1,2022

1
Effective Date: Renewal or Modification: Description of modifications.
5/15/07 Renewal Permit issued;changed PART I B.
heading;Changed page 6 F)to G);
changed verbiage in PART I G) 1.,2.,
3.;changed verbiage in PART II 2.a),
b),c); 10.; 13.; 16.;25.;27.;30.;
changed verbiage in PART III 2.2.;2.3.;
added PART III 7.,8.,9., 10.;changed
detection limits for fluoride and
cyanide.
7/1/10 Renewal Permit issued;changed monitoring
frequency for flow;changed verbiage
PART I G);changed sampling
frequency
7/1/13 Renewal Permit issued
7/1/13 Renewal Permit issued
7/1/16 Renewal Permit issued
7/1/19 Renewal Permit issued
7/1/22 Renewal Permit issued
IUP#=>CM-25
Page:2B
Effective Date:July 1,2022

IUP, Part I
Industrial User (IU) 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 (IIJP) into the sewer collection system and
wastewater treatment facility of the City of Monroe.
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:
Neutralize pH adjust
Spill Proctection
3) The Permittee is hereby authorized to, if required by the City of Monroe and after
receiving Authorization to Construct (A to C) from the City of Monroe, 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:
Process wastewater
Pipe#02,Description of Discharge:
IUP#=>CM-25
Page:3
Effective Date:July 1,2022

IUP, Part I
Industrial User (IU) Specific Conditions
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. See figures on Pages 4A and 4B.
IUP#=>CM-25
Page:4
Effective Date:July 1,2022

(for Fart I,"item 111 '
Permit No CM-25 - •
Part I-. Effluent Limitations and Monitoring Requirements
• A. Description of Discharges
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IUP, Part I, Section F: Receiving POTW name=>City of Monroe IU name=>ORO Manufacturing
Effluent Limits and Monitoring Requirements Receiving POTW NPDES#=>NC0024333 IUP#_> CM-25
Effective date for these Limits=>7/1/22 Pipe#_> 01
The permittee may discharge from this specific pipe Expiration date for these Limits=>6/30/25 40 CFR#=>433
number according to these specific dates,effluent
limits,and monitoring requirements. THE LIMITS ON THIS ARE, (Check one below):
LIMITS for ENTIRE permit period=> X
Conventional Concentration Limits Mass-Based Limits Monitoring Frequency Sample Required
Parameters' Daily Monthly Units Daily Monthly Units by Industry by POTW Collection laboratory
Max Avg. Max Avg. Method Detection
(C or G) Limits
Flow .004 MGD MGD Daily* Every Sample Meter
BOD mg/1 lbs/day C 2.0 mg/1
TSS mg/1 lbs/day C 2.5 mg/1
Ammonia mg/1 lbs/day C .5mg/1
pH 6 to 11 Std.Units 6 to 11 Std.Units 2/6 months 1/6 months G
Other Parameters, Please list alphabetically
Aluminum monitor only mg/1 lbs/day 2/6 months Random C .10 mg/1
Cadmium .003 mg/1 lbs/day 2/6 months 1/6 months C .001 mg/1
Chromium 1.50 mg/1 lbs/day 2/6 months 1/6 months C .010 mg/1
Copper 1.50 mg/1 lbs/day 2/6 months 1/6 months C .010 mg/1
Fluoride monitor only mg/1 lbs/day 2/6 months Random C or G .2 mg/1
Lead .20 mg/1 lbs/day 2/6 months 1/6 months C .005 mg/1
mg/1 lbs/day
Nickel 1.00 mg/1 lbs/day 2/6 months 1/6 months C .010 mg/1
Silver .20 mg/1 lbs/day 2/6 months 1/6 months C .005 mg/1
mg/1 lbs/day
Zinc 1.48 mg/1 lbs/day 2/6 months 1/6 months C .010 mg/1
Cyanide .30 mg/1 lbs/day 2/6 months 1/6 months G .010 mg/1
TTO3 2.13 mg/1 lbs/day 1/6 months C .010 mg/1
' Parameters and Prohibitions not specified above are regulated and limited by the (See next section,IUP,Part I, Section G.)
City of Monroe Sewer Use Ordinance. for Definitions and Limits Page(s) notes:
2 2/6 months shall be 2 sampling events consisting of 1 day each every 6 months. IUP,PART I,Page: 5
3 See PartIII4.
*The flow meter totalizer shall be recorded each day of discharge with the data submitted as required in PART II(2).
Effective Date:July I,2022
Ji

IUP, PART I
Industrial User (IU) Specific Conditions
G) Definitions and Limit Page(s) notes:
In addition to the definitions in the City of Monroe Sewer Use Ordinance the following
definitions and requirements apply:
1. Composite Sample:
a) A composite sample for the monitoring requirements of this IUP,is defined as the
automatic or manual collection of a series of grab samples of constant volume, not
less than 100 ml,collected at equal time intervals during the entire discharge period
on the sampling day. The time interval between grab samples shall be no greater
than once per hour,or
b) a single,continuous sample collected over a 24 hour period proportional to the rate
of flow. 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. 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 over a period of time not
exceeding 15 minutes. The grab sample can be taken manually. Grab samples must be
representative of the discharge.
4. Instantaneous measurement
An Instantaneous measurement for the monitoring requirements of this IUP is defined as a
single reading,observation,or measurement.
IUP#=>CM-25
Page:6
Effective Date:July 1,2022

PART II
General Conditions
Industrial User Pretreatment Permit (IUP)
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 City of Monroe, postmarked no later than the twentieth day of the month
following the month in which the samples were taken. Results based on laboratory
analysis shall include the laboratory report. 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 under the
signatory requirements of Part II, Section 13. Copies of these and all other reports
required herein shall be submitted to the City of Monroe to the following address:
Pretreatment Coordinator
City of Monroe
PO Box 69
Monroe,NC 28111
b) b) If the sampling performed by the permittee indicates a violation,the permittee
shall notify the City of Monroe 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 City of Monroe within 30 days after becoming aware of
the violation.
IUP#=>CM-25
Page:7
Effective Date:July 1,2022

PART II
General Conditions
Industrial User Pretreatment Permit (IUP)
c) Laboratory reports shall include the following:
1. sample preparation-type and date(s) and time(s)performed;
2. analysis start dates and times;
3. analyst(s)initials;
4. analytical techniques and methods used;
5. results of the analyses;
6. chain of custody records which contain the following Information
a. sampling location;
b. date(s)/time(s)sample(s)taken;
c. sample type: composite(time,flow or hand) or grab
d. container type;
e. teflon liner and/or zero headspace,if applicable;
f. type of preservative used,if any;
g. sample iced upon receipt;
h. parameters to be run from that particular bottle;
i. individual(s)who performed the sampling and/or field measurements;
j. samples relinquished/received by who and when(date&time).
In addition,the laboratory performing the analysis shall maintain on file for up to three
years after the analysis all laboratory data taken and calculations during the analysis,
including dates and times, the analyst performing the work, and the data and
calculations from all quality assurance procedures and testing. This data shall be
available for inspection by personnel of the City of Monroe upon request.
3. Test Procedures
Test procedures for the analysis of pollutants shall be performed by a North Carolina Certified
Wastewater Lab in accordance with the techniques prescribed in 40 CFR part 136 and
amendments thereto unless specified otherwise in the monitoring conditions of this permit. The
laboratory shall be certified by the State of North Carolina for each specific test parameter on
which their results are reported.
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 City of Monroe. The City of Monroe 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 City of Monroe Sewer Use Ordinance and is grounds for possible
enforcement action; for Permit termination, revocation, and reissuance, or modification; or
denial of a Permit renewal application.
IUP#=>CM-25
Page:S
Effective Date:July 1,2022

PART II
General Conditions
Industrial User Pretreatment Permit (IUP)
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 City of Monroe. Bypass approval shall be
given only when such bypass is in compliance with 40 CFR 403.17.Treatment facilities shall be
as diagrammed in Figure 2.
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 City of Monroe sewer system or the surface waters of the
State of North Carolina. 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.The permittee
shall maintain records of disposal of these substances for a minimum of three years.
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. Such evidence shall include
operating logs properly signed,or other relevant evidence that:
1. An upset occurred and that the permittee can identify the cause(s)of the upset;
2. The permittee facility was at the time being properly operated; and
3. the permittee submitted notice of the upset as required in Part H, Section 30,of
this permit
4. The permittee complied with any remedial measures required under Part II,
Section 5,of this permit
IUP#=>CM-25
Page:9
Effective Date:July 1,2022

PART II
General Conditions
Industrial User Pretreatment Permit (IUP)
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 City of Monroe,and/or their authorized representative,
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
City of Monroe. 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 Water Resources 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 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
accompanied by the following certification by the Authorized Representative:
"I certify under penalty of law that this document and all attachments were prepared under
my direction or supervision in accordance with a system designed to assure that qualified
personnel properly gather and evaluate the information submitted. Based on my inquiry of
the person or persons who manage the system,or those persons directly responsible for
IUP#=>CM-25
Page:10
Effective Date:July 1,2022

PART II
General Conditions
Industrial User Pretreatment Permit (IUP)
gathering the information,the information submitted is,to the best of my knowledge and belief,
true, accurate, and complete. I am aware that there are significant penalties for submitting
false information,including the possibility of fine or imprisonment for knowing violations. "
The Authorized Representative shall be as defined by the City of Monroe 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 City of Monroe Water
Resources Director or his/her designee 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 City of Monroe 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.
IUP#=>CM-25
Page:11
Effective Date:July 1,2022

PART II
General Conditions
Industrial User Pretreatment Permit (IUP)
The City of Monroe enforcement response will be in accordance with an Enforcement
Response Plan approved by the North Carolina Division of Water Quality and on file in the
office of the Pretreatment Coordinator
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 City.
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
with the requirements of the City of Monroe 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 120
days prior to its expiration date. The permittee is not authorized to discharge after the
expiration date of this permit if this re-application deadline has not been met.
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 City of Monroe 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 60 days before the change. Such changes,however, do not stay any
IUP#=>CM-25
Page:12
Effective Date:July 1,2022

PART II
General Conditions
Industrial User Pretreatment Permit (IUP)
condition of this permit. If the changes require additions or modifications to pretreatment
facilities to comply with this permit, all such modifications shall be approved and constructed
before planned changes are made. The permittee shall not begin the changes until receiving
written approval from the City of Monroe.Also see PART II,30 below for additional reporting
requirements for spill/slug issues.
26. Construction
No construction of pretreatment facilities or additions thereto shall be begun until Final Plans
and Specifications have been submitted to the City of Monroe and written approval and an
Authorization to Construct has 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 for 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,and shall comply with the prohibitive
discharge standards in §52.020 and §52.023 of the City Sewer Use Ordinance except as
specifically stated otherwise in this permit.
30. Reports of Potential Problems
The permittee shall provide protection from accidential and slug discharges of prohibited
materials and other substances regulated by this permit. The permittee shall also notify the
City of Monroe immediately of any changes at its facility affecting the potential for spills and
other accidential discharge,discharge of a non-routine,episodic nature,a non-customary batch
discharge,or a slug load as defined in the City of Monroe Sewer Use Ordinance.
IUP#=>CM-25
Page:13
Effective Date:July 1,2022

PART II
General Conditions
Industrial User Pretreatment Permit (IUP)
Additionally, the permittee shall notify by telephone the City of Monroe 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
City of Monroe Pretreatment Coordinator,telephone number(704)282-4632,if no answer,the
Wastewater Treatment Plant, telephone number [phone] and [phone], if no
answer, the Wastewater Treatment Plant Superintendent, telephone number [phone]
immediately upon the first awareness of the commencement of the discharge. Leaving a
message will not be acceptable until all phone numbers listed above have been attempted.
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(5)days,unless waived by the City of Monroe.
IUP#=>CM-25
Page:14
Effective Date:July 1,2022

PART III
Special Conditions
Industrial User Pretreatment Permit (IUP)
1. Slug/Spill Control Plan
The permittee shall provide protection from accidental and slug discharges of prohibited
materials and other substances regulated by this permit. The permittee shall develop and
update,as required,a written slug/spill plan including procedures for preventing a slug or spill
which could cause a violation of the discharge standards of this permit. Any revision of this
plan shall be submitted to the City of Monroe no more than 60 days after the change(s) are
made.If no changes are made to the plan,a written statement to that effect must be submitted
to the City of Monroe on or before January 31, of each year throughout the duration of the
permit. The plan shall include the following at a minimum:
1) identification of all chemicals,by name,quantity,and storage location which would
cause a violation of this permit in the event of a spill and the means at each location to
prevent the spill from entering the City sewer system or surface waters of the State of
North Carolina.
2) who has the authority to halt production and/or wastewater discharge in the event
of a spill or upset condition(include phone numbers)
3) who is responsible for implementation and updating of the plan
4) the personnel that should be familiar with the plan
5) the person(s) responsible for notifying the City of Monroe immediately upon
discovery of a problem affecting the characteristics of the wastewater
2. Flow Measurement
1. The Permittee shall provide and operate monitoring facilities for the inspection,
sampling and flow measurement of the permittee's process wastewater discharges.
2. The permittee shall maintain appropriate discharge flow measurement devices and
methods consistent with approved engineering and 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 5% from true discharge rates throughout the
range of expected discharge volumes.
3. The approved wastewater meter shall be installed,maintained, and calibrated once
every six months.
4. The wastewater meter must have a non-resettable mechanical totalizer that reads in
gallons.
IUP#=>CM-25
Page:15
Effective Date:July 1,2022

PART III
Special Conditions
Industrial User Pretreatment Permit (IUP)
5. Flow monitoring equipment and sampling point should be located in an area
accessible to the City of Monroe personnel without prior notification. The City of
Monroe must be supplied with any keys and/or other tools necessary to perform the
aforementioned.
6. There shall be no by-pass capability of the wastewater metering devices or the
sampling point.
7. The permittee shall maintain flow, maintenance, and calibration records for a
minimum of three years.
8. In the event of temporary unintentional failure of the flow meter,the permittee shall
notify the Pretreatment Coordinator as soon as possible,but in no case beyond 24 hours
after first becoming aware of the failure. Repair shall be under taken as quickly as
possible.
3. High Strength Surcharges
Notwithstanding any concentrations permitted for total suspended solids, 5 day BOD or
nitrogen ammonia stated in Part I, Section F of the Permit, the permittee shall be responsible
for the payment of high strength surcharges at rates that may be established in the future by
the Monroe City Council.
4. Total Toxic Organics
The term "TTO" shall mean Total Toxic Organics which is the sum of the concentrations of
each of the toxic organic compounds listed in 40 CFR Part 433.11(e) which are found at
concentrations greater than 0.010 mg/I.
5. Total Toxic Organics Sampling
If there is a change in process which may result in discharge of Total Toxic Organics (TTO),
the permittee shall perform a TTO sampling event based on a sample that is characteristic of
the permittee's usual wastewater flow, and submit the laboratory results from this sampling
event to the City of Monroe Industrial Pretreatment Office within 45 days of the process
change.
IUP#=>CM-25
Page:16
Effective Date:July 1,2022

PART III
Special Conditions
Industrial User Permit (IUP)
6. Total Toxic Organics(TTO)Certification
In lieu of monitoring for TTO,the permittee may,upon submitting to the City of Monroe one
sample showing TTO compliance and a Toxic Organic Management Plan,provided no process
change affecting TTO has occurred, make the following certification every six month
compliance period:
"Based on my inquiry of the person or persons directly responsible for managing compliance
with the permit limitation for total toxic organics (TTO), I certify that, to the best of my
knowledge, no discharging of concentrated toxic organics into the wastewater has occurred
since filing of the last monitoring report.I further certify that this facility is implementing the
Toxic Organic Management Plan submitted to the City of Monroe."
The certification statements are due on June 15 of each year covering the January through
June six month reporting period,and November 15 of each year covering the July through
December six month reporting period.
If the certification is not submitted for both periods within 7 days of the due date the City of
Monroe will collect TTO samples before December 31 and the permittee shall be billed for
the cost of the TTO sampling.
7. Toxic Organic Management Plan
Within sixty days of the effective date of this Industrial User Permit,the permittee shall develop
and submit to the City of Monroe a toxic organic management plan.
8. Special Reopener
The City of Monroe reserves the right to reopen and modify/change limits and or sampling
frequency as deemed necessary.
9. Sludge Management Plan
Within sixty days of the effective date of this Industrial User Permit,the permittee shall submit
a sludge management plan to the City of Monroe.
IUP#=CM-25
Page:17
Effective Date:July 1,2022

PART III
Special Conditions
Industrial User Permit (IUP)
10. 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.
IUP# CM-25
Page:18
Effective Date:July 1,2022

IUP Synopsis
A. IUP Basic Information
Receiving POTW name: POTW NPDES#:
City of Monroe NC0024333
IUP name: IUP Number:
ORO Manufacturing Company CM-25
IUP Effective date: Pipe Numbers,list all regulated pipes:
July 1, 2022 01
IUP expiration date: IIJP 40 CFR#,if applicable:
June 30, 2025 433
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
result in an Over Allocation situation for any pollutants.
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 X
The following pollutants were assigned numerical limits in this IUP based on
the categorical regulations. These limits do not result in over allocations.
Cd, Cr, Cu, Pb,Ni, Ag, Zn, Cyanide, TTO
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 result in over allocations.
2

IUP Synopsis
RATIONALE#4:
4.) Other Rationale for Limitations:
The following rationale was used for developing IUP Limits.
Parameter Rationale
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 lU is considered
insignificant at this time.
Pollutant Avg SIU mg/1 Avg SIU lbs/day 5% MAHL, lbs/day
RATIONALE#5b:
Categorical Parameters with Waived Monitoring:
Monitoring is waived for the following categorical parameters (attach
documentation of waiver justification).
3

recj a-2'aa
COVER PAGE
Company Name
Oro Manufacturing Company
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
Robert A.Engel(Rob) data management. Patricia A.Engel
Title V.P.Sales/Purchasing Years with firm 20+ Title Vic President Years with firm 20+
Phone# [phone] Ext:318 Fax# [phone] Phone#[phone] Ext:302 Fax#[phone]
Physical street address of facility Official mailing address,if different. Note if same.
5000 Stitt Street SAME
City Monroe State NC Zip 28110-4000 City Monroe State NC Zip 28110
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 info ion, including the possibility of fine and/or imprisonment for
know' iol ins.
2/28/2022
Signature of Au iz d Representative Date
listed above (seal if applicable)
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.doc
Revision date: 12/30/97 Page 1 of 188

1. Provide a brief narrative description of the type of business,
manufacturing processes, or service activities your firm conducts at this site.
Contract manufacture and assembler specializing in fabrication and,finishing of
sheet metal and tubular metal products for industry.
2. List the primary products produced at this facility:
Military type troop seats and various sheet and tubular metal products
3. List raw materials and process additives used:
Steel and Aluminum sheet, rod, bar and tube.
4. Are biocides added to any water discharged to the
POTW, if yes describe:
Yes
No X
5. Describe weekly production schedule, including shifts worked
per day, employees per shift, and primary operation during shift.
Monday through Friday
One shift
31 employees
Primary operation: Manufacturing and Assembly
Production process is: Check, if all
continuous
Check, if all batch X
If both please enter, % continuous
Batch
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.doc
Revision date: 12/30/97 Page 2 of 188

Does production vary significantly (+- 20 %)by season. Describe.
Yes
No x
Are any significant (+- 20 %) changes in production that will affect
wastewater discharge expected in the next 5 years. If yes,please describe.
Yes
No x
9. List all current waste haulers. Give name, address, phone numbers, volume and
materials hauled off.
Safety-Kleen 2 each 55 gal drums Neutralization Acids<20%
2320 Yadkin Avenue 2 each 55 gal drums Solid/Paint booth Filters
Charlotte,NC. 28205 5 each 55 gal drums Used Oil
704-375-0098 2 each 55 gal drums Neutralization Alkaline
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.
All analyses on file with the City of Monroe
11. Attach sketch or schematic showing sampling points and all connections to the sewer.
See Attached
12. Complete the Wastewater Pollutants Checklist attached to this Survey.
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.doc
Revision date: 12/30/97 Page 3 of 188

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 X
ORO Manufacturing Company,Inc. Wastewater NC0006513
If yes: Permit,#,date,applicant name
Do you have, or have you ever applied for or been issued an
Industrial 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 X
ORO Manufacturing Company,Inc. CM-25-433 7/1/2016—6/30/2019
If yes: Permit,#,date,applicant name
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 X
ORO Manufacturing Company,Inc. / Air-02099R11 6/11/2015-6/31/2023
If yes: Permit type,#,date,applicant name
ORO Manufacturing Company,Inc. / Solid Waste—NCD003171311 7/1/2000
If yes: Permit type,#,date,applicant name
ORO Manufacturing Company,Inc. Storm Water NC030038(Cancelled 4/20/05)
16. Is a Spill Prevention Control and Countermeasure (SPCC) Plan
prepared for this facility?
Y X
es
N
0
Title: 1U Wastewater Survey & Permit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.doc
Revision date: 12/30/97 Page 4 of 188

17. Is a Spill /Slug Control Plan required by the POTW, prepared for this
facility?
Y X
es
No
18. Do you have any underground storage tanks at your facility? If yes, list
contents and volume of each tank.
Yes
No X
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 2
No
1. Nitrogen Gas—900 gallons, Vapor—No spill or containment
2. Oxygen Gas—Is now Multi-tank pack Supplied as Needed
3. Empty—8000 gallons, #2 Fuel oil
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.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 e re e
d d d d
(see Source List below) (see Disposal List below)
1. Process water 1 304 494 2& 5 304 494
2. Washdown water 1 40 40 2 & 5 40 40
3. Water into product
4. Air Quality Permitted units
5. Domestic-toilets,drinking,cafe 1 1311 2027 2 1311 2027
6. Cooling water,Process NON-Contact
7. Boiler/Cooling tower blowdown 1 5 5 5 5 5
8. Cooling water,HVAC
9. Other:
Totals=> 1660 2566 Totals=> 1660 2566
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: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.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=> X
Total volume of equalization (million gal.) _> .01875
2. Activated Carbon Yes No Describe any,if present.
3. Activated Sludge Yes No
4. Air Stripping Yes No
5. Centrifugation Yes No
6. Chemical Precipitation Yes No
7. Chlorination Yes No
8. Cyanide Destruction Yes No
9. Cyclone Yes No
10. Dissolved Air Floatation Yes No
11. Filtration Yes No
12. Flocculation Yes No
13. Grease Trap Yes No
14. Grit Removal Yes No
15. Ion Exchange Yes No
16. Neutralize,pH adjust Yes X No Manual preliminary neutralization
17. Other Biological Treatment Yes No
18. Ozonation Yes No
19. Reverse Osmosis Yes No
20. Screening Yes No
21. Sedimentation Yes No
22. Septic Tank Yes No
23. Silver Recovery Yes No
24. Solvent Separation Yes No
25. Spill protection Yes X No SPCP Procedures
List any others.
Title: IU Wastewater Survey & Pennit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.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 10/1/1961
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.
336413
33299
332332
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=> 40.433
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
No X
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.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 X 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 410 Textile Mills
415 Inorganic chemical Manufacturing 429 Timber products processing
420 Iron&Steel Manufacturing 442 Transportation Equipment Cleaning
425 Leather Tanning&Finishing Others
Title: 1U Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 9 of 188

11
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)
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-Dichlorobenzene 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 39120 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-chloroiso ro 1)ether 34283 X X
( P pY
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: IU Wastewater Survey & Permit Application
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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)
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
Isophorone 34408 X X
N-nitroso-di-n-propylamine 34428 X X
N-nitrosodimethylamine 34438 X X 1
N-nitrosodiphenylamine 34433 X X
Naphthalene 34696 X X
Nitrobenzene 34447 X X
Phenanthrene 34461 X X
Pyrene 34469 X X
Metals
Aluminum (Monitor Only) 01104 X X
Antimony 01097 X X
Arsenic 01002 X X
Beryllium (Monitor Only) 01012 X X
Cadmium 01027 X X BRL
Chromium 01034 X X .0049 to .075
Copper 01042 X X .030 to .68
Lead 01051 X X .0014 to .044
Mercury (Monitor Only) 71900 X X
Molybdenum 01062 X X
Nickel 01067 X X .0033 to .015
Selenium (Monitor Only) 01147 X X
Silver 01077 X X BRL
Thalium 00982 X X
Zinc 01092 X X .085 to .18
Title: IU Wastewater Survey & Permit Application
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r Pollutant WastewateChecklist
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 BRL- .010
Fluoride (Monitor Only) 00951 X X
Purgeable Volatile Organics
1,1,1-Trichloroethane 34506 X X
1,1,2,2-Tetrachloroethane 34516 X X
1,1,2-Trichloroethane 34511 X X
1,1-Dichloroethane 34496 X X
1,1-Dichloroethylene 34501 X X
1,2-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
Chloroform 32106 X X il
Chloromethane 34418 X X
cis 1,3-Dichloropropene 34704 X X
Dibromochloromethane 32105 X X
Ethylbenzene 34371 X X
Methylene chloride 34423 X X
Tetrachloroethylene 34475 X X
Toluene 34010 X X
trans 1,3-Dichloropropene 34699 X X
trans-1,2-Dichloroethylene 34546 X X
Trichloroethylene 39180 X X
Trichlorofluoromethane 34488 X X
Vinyl chloride 39175 X X
Others
Xylene x X
•
Title: 1U Wastewater Survey & Permit Application
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Revision date: 12/30/97 Page 12 of 188

Data Summary Form
;ity Monroe <= Receiving POTW
of
'M- 25 <= Receiving NPDES #
'ipe#001 <= Specific Sample Location!
i.e., Give IU Name, IUP#, and/or pipe#
BOD TSS Ammonia
Lab=> Laboratory performing analysis=> Modification6/29/2001 eliminated
MDL => Laboratory Method Detection Limits=>these requirements.
Notes=> Notes =>
Q = Flow
iple Date Notes about Sample M=Metered Conc. Results Conc. Results Conc. Results
, or Sample E=Estimated from Lab from Lab from Lab
unt Collected
mgd gal/day <? mg/1 <? mg/1 <? mg/1
2
3
5
5
7
0
1
2
tc
TNS => Total number of samples=>
Max. value=> Maximum data value (mg/1)_>
.vg. (use 1/2 BDL)=> Avg. data value, Include BDL values as 1/2 detection limit=>
IU Wastewater Survey & Permit Application
tame: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.doc
;ion date: 12/30/97 Page 13 of 188

Data Summary Form
City Of Monroe <= Receiving POTW
CM-25 <= Receiving NPDES #
Pipe #001 <= Specific Sample Location!
i.e., Give IU Name, IUP#, and/or pipe#
Arsenic Copper Chromium Cadmium COD Copper
Lab => Not Monitored Prism Prism Prism Not Monitored Prism
MDL =>
Notes =>
Sample Date Sample Conc. 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/l
1 ALL DATA ON FILE WITH THE CTIY OF MONROE
2
3
4
5
6
7
8
9
10
11
12
etc
TNS =>
Max. Value =>
Avg. (use 1/2 BDL) _>
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.doc
Revision date: 12/30/97 Page 14 of 188

Data Summary Form
ity Of Monroe <= Receiving POTW
M-25 <= Receiving NPDES #
ipe #001 <= Specific Sample Location!
i.e., Give IU Name, IUP#, and/or pipe#
Cyanide Lead Mercury Nickel Silver Zinc
Lab=> Prism Prism Not Monitored Prism Prism Prism
MDL=>
Notes=>
;ample Date Sample Conc. 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/l <? mg/1 <? mg/1 <? mg/1 <? mg/1
1 ALL DATA ON FILE WITH THE CTIY OF MONROE
2
3
4
5
6
7
8
9
10
11
12
etc
INS => 8 8 8 8 8
Max. Value=> .023 .012 .0076 BRL .23
Avg. (use 1/2 BDL)_> .01 .0019 .004 BRL .117
IU Wastewater Survey & Permit Application
une: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.doc
on date: 12/30/97 Page 15 of 188

Data Summary Form
City Of Monroe <= Receiving POTW
CM-25 <= Receiving NPDES #
Pipe #001 <= Specific Sample Location!
i.e., Give IU Name, IUP#, and/or pipe#
PH Other Other Other Other Other
Lab=> Prism
MDL =>
Notes =>
Sample Date Sample Conc. 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 ALL DATA ON FILE WITH THE
CTIY OF MONROE
2
3
4
5
6
7
8
9
10
11
12
etc
TNS =>
Max. Value=>
Avg. (use1/2 BDL) _>
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\raengellDocuments\City Of Monroe\Permit 2019.doc
Revision date: 12/30/97 Page 16 of 188

Part V, Waste Reduction Information :
State Pretreatment Rule 15A NCAC 2H.0916 (c)(1)(M) requires Significant Industrial
waste reduction (pollution
Users to include a description of current and projected (p
P prevention) activities. The codes listed are standard EPA codes found on Toxic Release i
Inventory and other environmental forms. Please check all applicable codes for your
facility related to wastewater discharge.
Current Projected Code Description
X 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)
X 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
X 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)
X 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
X W36 Implemented inspection or monitoring program of potential spill or
leak sources
X W39 Other spill and leak prevention(explain briefly in comments)
W41 Increased purity uri of raw materials
p
W42 Substituted raw materials
W49 Other raw material modifications (explain briefly in comments)
X W51 Instituted recirculation within a process
Title: IU Wastewater Survey&Permit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.doc
Revision date: 12/30/97 Page 17 of 18

Current Projected Code Description
x 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)
x 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
x W68 Improved rinse equipment operation
W71 Other cleaning and degreasing operation(explain briefly in comments)
x 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)
W39—Area is self contained in pit.
Title: IU Wastewater Survey & Permit Application
File name: C:\Users\raengel\Documents\City Of Monroe\Permit 2019.doc
Revision date: 12/30/97 Page 18 of 188

(for Fart I,' item 111 '
Permit No CM--25 ' •
Part I-. Effluent Limitations and Monitoring Requirements
A. Description of Discharges
• Descriptian
001 Process uastwater
•
�a �64K/eider t j
• 1 i qnj
(i}n c, Drain.}
�y l
.. •
�;� S•.1�r • •
Aj�.G a�Gj

'
i a;tK; ARE !' w1DE. x a' DEEP X l ' t.Ghr 1
{ VOLUME EACH I31i U'n.. I
BASED ON 5(i' .k 3(' X 1 PI T
( APEA Valli] 1-431f t'3.7 GAL
GA
1,OAO 8. IJ'QG'3ill ..1f,,A
[._ 11 �
#3 RINSE WATER+
TANK 117 SEAL
lel
I _
TANK fib t- Sr;, I j
I 1
1 _
1-ANK 115 RINSE. IWATER
J:J
( :11 1lANK H4 DE SMUT
JJ l
1 1
TANK 03 ETCHJ
f I
TANK 0P RINSE WATER!
i I i
l i
- _._-.__...-__ 2
I e . -_.. ._,,..I
I 1

SIU INSPECTION FORM
Name Of Industry: MO Mt�.j,(`` �i r c C �y IUP# C,m
Address Of Industry: Fj� 7"�"i' 't' '� IV,P Expiration Date:
Me n/Y,-2` NC a t 11 O 6 -36-2 Z
Indus R?presentatives: Title, C' f�
�Y.51 �r1 Uur.oi(oc,
POTW Representatives: Title
ev K.ee„Soler `PT" c-)c-Ird
Date Of Inspection: 1 O-a s"a 1 Time Of Inspection: Mil 0 ®'pm O v- �n
_`3
Purpose of Inspection: Annual Other(Describe)
POTW to which IU discharges C..i o•F (YN•an rrr NPDES# NLtk i-13 3 3
Is SIU currently in SNC? N o If yes,for what?
PART I-INITIAL INTERVIEW
Has anything changed since the last inspection or IUP application in the following:
COMMENTS
Product YES I'110
Raw materials used YES/���
Manufacturing processes YES �1i/� --1
Categorical,if applicable YES (' 4 3 3 etr• i ZQ
Production rate YES/ i�
Number of employees ES/NO n.n.r •-cr'Ar- 1.11
Number of shifts YES/
Comments:
PART II - PLANT TOUR- Visit all areas where wastewater is generated or where there
are drains to the POTW.
Plant Tour Section A- PRODUCTION AND STORAGE AREAS
1. Are there floor drains in the production area? YES/ T O Where do they go?
2. Are production areas diked,contained,o • erwise constructed in such a way as to prevent harm to the
WWTP,especially from spills or slugs? %S11/NO Comments:'
3. Are there floor drains in the storage area? YES/ O Where do they go?
4. Are storage tanks and areas diked,contained,o therwise constructed in such a way as to prevent harm
to the WWTP,especially from spills or slugs? ,4( /NO Comments:
5. Are process and storage tanks and pipes labeled? )S/NO
6. How are off-spec raw materials,and products disposed of?
7. When is the production area cleaned? A c,:c 1 y 5,m,e12.p 7
8. Is the wastewater from cleaning the production area discharged to the POTW? YES/0 p
9. What non-process wastewaters are discharged to POTW? elonn,a 't cal {moo. r �'� ow/Jr ays-
t-'
Comments:
PART II - Plant Tour Section B- PRETREATMENT SYSTEM
Title: SIU Inpsection Form
File name: COMP.INSP App 7-D
Revision data: August 1,1994 Page 1

SIU INSPECTION FORM
Ask the operator to describe pretreatment system.
1. Does operator seem knowledgable bout the system? iE /NO Comments:
of
2. Are all urfits operatioi�al. YES/NO tN/\ r 0 n SR A.
3. How often does operator/maintenance rson check syst>n? A c,� y
4. Is there an operator for each shift? E /NO
5. How and when is sludge disposed of? f i\e. 5 tine d/
6. Is there a schedule for preventative aintenance? YES/e
�5
Comments:
PART II - Plant Tour Section C - SAMPLING POINT(S) AND FLOW
MEASUREMENT
(Collect a sample if desired.)
1. Does an outside lab complete sampling? ONO If yes,name of lab. U Jc� o I
2. If industry com�pPlete sampling,ask the industry representative to describe sampling pri,�ocedures.
Comments: L�Gvk C—on--(JpS;
3. Is flow measurement equipment operational? YE /NO Comments:
4. Is there a calibration log for the flow meter? 0/NO Comments:
Comments:
PART III - EXIT INTERVIEW
Review monitoring records an• , er SIU records required by IUP.
1. Are files well organized? M► /NO Comments:
2. Are sample collection/chain-of-custody forms filled out properly? ES�NO Comments: _
3. Do results in files agree with reports sent to POTW? ES NO Comments:
4. Who has authority to shut down production should a spill or slug discharge occur? r
5. How OR SIU inform employees of whom to call at POTW in case of spill/slug? (7—cA t tkS
If slug/spill plan is already required by PO W,review procedures.
6. Is SIU implementing slug/spill plan? fa NO Comments:
Comments:
INSPECTION RESULTS
Slug/Spill Control Plan Needed? YES/
Comments,Required Or Recommended Actions:
Signature Of Inspector(s) fZ,1 Date: j 3-XS'�
/ Date: /o -,zf— z/ •
Title: SIU Inpsection Form
File name: COMP.INSP App 7-D
Revision data: August 1,1994 Page 2