NC0047384_Pretreatment_IUP_PLaters02_Renewal_20240509

CITY OF GREENSBORO
WATER RESOURCES DEPARTMENT
INDUSTRIAL WASTE SECTION
SIGNIFICANT INDUSTRIAL USER
WASTEWATER DISCHARGE PERMIT
SIU PERMIT NUMBER P020
GREENSBORO INDUSTRIAL PLATERS 02
IS AUTHORIZED TO DISCHARGE WASTEWATER
FROM A FACILITY LOCATED AT
123 EDWARDIA DRIVE
GREENSBORO, NORTH CAROLINA
into the City of Greensboro Sanitary Sewer System
to the T.Z. OSBORNE Water Reclamation Facility
[NPDES PERMIT NUMBER NCO0473841
in accordance with the limitations and conditions set forth in this permit.
This permit shall become effective
SEPTEMBER 1, 2023
This permit and the authorization to discharge shall
expire at midnight on
AUGUST 31, 2028
or upon permit reissuance,whichever comes first.
uaaos�, -Amy V r' oski Date2&143
Pretreatment Coordinator

Page 2, SIU Permit#P020
GREENSBORO INDUSTRIAL PLATERS 01
Effective September 1, 2023
INDUSTRY OFFICIAL RESPONSIBLE FOR PERMIT COMPLIANCE
This signatory official shall be responsible for permit compliance, including monitoring, report
submittals, accidental discharge notification, and permit renewal. Although certain of these
activities may be delegated to other individuals, the Signatory Official is ultimately responsible
for compliance with all permit conditions, limits, activities and terms.
I am aware of my responsibilities as Signatory Official and I am aware of the terms and
conditions set forth in this wastewater discharge permit and the City of Greensboro Sewer Use
and Pretreatment Ordinance.
Signatory Official NAME (PLEASE PRINT)
Signatory Official TITLE (PLEASE PRINT)
Signatory Official Signature
Date:
CHANGE OF SIGNATORY OFFICIAL
If there is a change of the Signatory Official for this facility, the City of Greensboro shall be
notified of such change within thirty (30) days. A new page 2, "INDUSTRY OFFICIAL
RESPONSIBLE FOR PERMIT COMPLIANCE" shall be submitted to the Industrial Waste
Section with the name, title and signature of the new official.

Page 3, SIU Permit#P020
GREENSBORO INDUSTRIAL PLATERS 01
Effective September 1, 2023
SECTION I—PERMIT MODIFICATION HISTORY
DATE MODIFIED REASON & DESCRIPTION OF MODIFICATION OR ACTION
September 1, 1998 PERMIT RENEWAL
September 1, 2003 PERMIT RENEWAL
PERMIT RENEWAL
Page 4, Section II.B.2.-Pretreatment processes updated to reflect
current permit application; Page 4, Section II.C. —Modified
description of monitoring location; Page 5, Section III—Flow limit
changed from daily maximum limit to monthly average limit; Changed
total cyanide limit to Amenable Cyanide limit with an increase in
September 1, 2008 POTW monitoring; and cadmium limit reduced from 0.7 mg/l Daily
Maximum and 1.2 mg1l 4-Day Average to 0.2 mg/l Daily Maximum
Limit; Page 6 Section IV.A. —Incorporated due date for TTO
Certification Statement submittal by May 151h and November 151h for
I S`and 2nd semi-annual reporting periods respectively; Page 6,
Section IV..B. —Incorporated requirement for flow data submittal by
the 15`h for the previous month's readings.
Permit Modification
1) Page 5, Section III, Changed minimum sampling requirement for
July 1, 2011 City; 2) Page 7, Section IV.B.-Changed effluent meter calibration
requirement from once per six-month period to once per calendar
year;
PERMIT RENEWAL
Section IV. - Modified Special Condition A (TTO); Added Special
September 1, 2013 Condition D (Slug/Spill Control Plan); Section III-Added TTO
sampling frequency and sample type for POTW; All changes per
DWQ guidance. Section IIL —Monthly Average flow increased to
5,995 gallons per day based on user request.
PERMIT RENEWAL
September 1, 2018 Special Conditions Changes: Added Flow Measurement Calibration/
Verification Section; Modified Flow Language; Modified Total Toxic
Organics Certification language,-
September 1, 2023 PERMIT RENEWAL

Page 4, SIU Permit#P020
GREENSBORO INDUSTRIAL PLATERS 01
Effective September 1, 2023
SECTION II - GENERAL INFORMATION
A. Description of Discharge
Pipe 01 —Process Wastewater from job shop zinc, zinc phosphate,passivation and bonded
lubrication processes
Pipe 01 does not include domestic waste discharge. However it does contain <300 gpd of non-
contact cooling water.
B. 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 City of Greensboro
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.
NO PRETREATMENT PROCESSES
3. The permittee is hereby authorized to, if requested by the City of Greensboro and after
receiving Authorization to Construct(A to C) from the City of Greensboro, construct and operate
additional pretreatment units as needed to meet final effluent limitations.
C. Monitoring Location
Drain located on south side of the building, next to tank #38 (wax post-treatment tank)
D. Composite Sampling Technique
A composite sample for the purposes of this permit is:
A "manual composite" sample consisting of at least four grab samples of equal volume taken at
equal time intervals over the entire workday. All samples for the workday shall be deposited
into one container.

Page 5, SIU Permit#P020
GREENSBORO INDUSTRIAL PLATERS 01
Effective September 1, 2023
SECTION III - EFFLUENT LIMITS AND MONITORING REQUIREMENTS
Effluent Limits and Monitoring Requirements for Pipe 02
THIS FACILITY IS REGULATED BY FEDERAL CATEGORICAL PRETREATMENT
STANDARDS FOR ELECTROPLATING—JOB SHOP DISCHARGING LESS THAN
10,000 GPD [40 CFR PART 413.14]
EFFLUENT LIMITATIONS MONITORING FREQUENCY
EFFLUENT Daily 4-Day Monthly Sample PERMITTEE CITY OF
CHARACTERISTICS Maximum Average Average Type GREENSBORO
Flow (gallons per day) 5,995 # DAILY
Cadmium T m /1 0.2 - C 1/6 months
Lead T m /1 0.6 0.4 C 4/6 months
Cyanide Amenable m /1 0.05 - Grab 1/6 months
Chromium T m /1 M C 1/6 months
Copper T m /1) M C 1/6 months
Nickel T m /1 M C 1/6 months
Silver T m /1 M C 1/6 months
Zinc T m /1 M C 1/6 months
Total Toxic Organics^ 4.57 mg/1 - Grab ** 1/year**
(m /1
ALL METALS ARE TO BE ANAL YZED AS TOTAL METALS(T)
#The Greensboro Industrial Waste Section does not consider Flow to be a pollutant and
flow data is not considered to be a report.
** A certification statement can be submitted semi-annually in lieu of sampling for total
toxic organics (TTO). See Section IV—Special Permit Conditions
^ See attached list for Definition of Total Toxic Organics under 40 CFR Part 413
C - Composite Sample [See Section II Part D for permit-specific definition]
G - Grab Sample
M- Monitoring Only [See City of Greensboro Local Pollutant Allocation Document to
determine if an Allocation has been issued for this parameter]

Page 6, SIU Permit#P020
GREENSBORO INDUSTRIAL PLATERS 01
Effective September 1, 2023
SECTION IV- SPECIAL PERMIT CONDITIONS
A. TOTAL TOXIC ORGANICS CERTIFICATION IN LIEU OF MONITORING
[40 CFR Part 413, Part 433, and Part 469]
Per 40 CFR Part 413.03, 433.12, or 469.13, in lieu of monitoring for Total Toxic Organics
(TTO) this facility may complete, sign, date, and submit a semi-annual certification statement,
which includes the following language:
"Based on my inquiry of the person or persons directly responsible for managing compliance
with the pretreatment standard for total toxic organics (TTO), I certify that, to the best of my
knowledge and belief, no dumping of concentrated toxic organics into the wastewaters has
occurred since filing the last discharge monitoring report" because (select correct statement
below):
I further certify that no toxic organics (as defined by EPA), are used at this facility
I further certify that this facility is implementing the current toxic organic management
plan submitted to the City of Greensboro.
I hereby certify that I have personally examined and am familiar with the information submitted
in this document and that the information is true, accurate and complete. I am aware that there
are significant penalties for submitting false information. "
The semi-annual TTO certification statements are due by July 15th of each year(covering the
previous January 1 through June 30 period) and January 15th of each year (covering the previous
July 1 through December 31 period). Certification statements must not be signed prior to the end
of the semi-annual period.
B. FLOW MEASUREMENT
Flow Meters: Incoming City Water Meter
This flow meter shall be read, recorded and the daily flow calculated in gallons per day. Flow
measurement records shall be submitted to the City of Greensboro Industrial Waste Section
monthly. Flow data is to be submitted by the 15th of each month for the previous month's flow
measurements. The Industrial Waste Section may also require submission of flow deduct meter
records. If no discharge occurs during the month, the permittee shall submit the monthly record
on time and state "NO DISCHARGE" on the record.
The permittee shall maintain permanent flow records and meter maintenance records on-site for
a minimum of three (3) years. These records shall be available to the City of Greensboro
Industrial Waste Section during inspections or upon request.
See Flow Meter Cali bration/Verification Requirements in another subpart of this section.

Page 7, SIU Permit#P020
GREENSBORO INDUSTRIAL PLATERS 02
Effective September 1, 2023
C. SIGNATORY REQUIREMENTS FOR INDUSTRIAL USER REPORTS
All self-monitoring and re-sampling data submitted for compliance to the City of Greensboro
shall include the certification statement below and shall be signed by the person on-site at the
facility who is authorized to represent the company in an official capacity concerning matters
that involve the City of Greensboro Industrial Waste Section ("Signatory Official").
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 tivho manage the system, or those persons directly
responsible for gathering the information, the information submitted is, to the best of my
knowledge and belief, true, accurate and complete. I am aware that there are significant
penalties for submitting false information, including the possibility of fine and
imprisonment for knowing violations.
D. SLUG/SPILL CONTROL PLAN
The permittee shall provide protection from accidental and slug discharges of prohibited
materials and other substances regulated by this permit, which may have a reasonable potential
to cause Interference or Pass Through, or in any other way violate the POTW's regulations, local
limits or Permit conditions.
The permittee shall notify the Industrial Waste Section immediately of any changes at its facility
affecting the potential for a Slug Discharge.
The permittee shall submit a new or updated slug/spill control plan for approval when so directed
in writing by the City of Greensboro Industrial Waste Section. The plan shall include, but is not
limited to:
■ Description of discharge practices, including non-routine batch discharges;
■ Description of stored chemicals;
■ Procedures for immediately notifying the POTW of slug discharges that would cause a
violation of 40 CFR Part 403.5 (b) [EPA Specific Prohibitions included in Greensboro
SUO Article II, Section 1. B.], with procedures for follow up written notification within 5
days;
■ If necessary, procedures to prevent adverse impact from accidental spills, including
inspection and maintenance of storage areas, handling and transfer of materials, loading
and unloading operations, control of plant site run-off, worker training, building of
containment structures or equipment, measures for containing toxic organic pollutants
(including solvents) and/or measures and equipment for emergency response.
Any current slug/spill control plan developed by the permittee and approved by the City of
Greensboro is hereby incorporated as a condition of this Significant Industrial User Permit.
September 1, 2023 Permit Renewal

Page 8, SIU Permit#P020
GREENSBORO INDUSTRIAL PLATERS 02
Effective September 1, 2023
E. FLOW METER CALIBRATION/VERIFICATION
Flow meters used for flow monitoring under this permit shall be calibrated in accordance with
manufacturer's recommendation by an independent contractor or a Greensboro Industrial Waste
Section approved in-house technician. Calibration documentation shall be maintained for a
minimum of three (3) years and made available upon request and during on-site inspections.
1. Industries with a highly-accurate (<0.5% variance) flow meter, such as a magnetic or
ultrasonic (Doppler and transit) meter, must have the meter calibrated/verified once every
five years.
2. Industries with effluent wastewater meters that are used for City of Greensboro sewer
billing purposes, must calibrate the meters annually. Permanent records in the form of
electronic data trend sheets, strip or circular chart recordings that have back-up and fail-
safe capabilities are also required to be maintained.
3. Any industry may conduct meter calibration more frequently than required in this permit.
The following flmv meters/systems have no calibration requirements:
1. Industries with custom built Memtek0 pretreatment systems have a permanently
calibrated flow measurement system (as long as the plumbing remains intact and the
viscosity of the liquid does not change) and no calibration is required.
2. Industries with a non-discharge closed-loop system are not required to have any meter on
the system calibrated.
3. Industries that record daily flow from a City of Greensboro owned, maintained, and
calibrated incoming potable water meter are not required to have the meters calibrated.
4. The Industrial Waste Section does not require deduct meters to be calibrated.
Industries with an electronic data base with power back-up do not need to maintain redundant
paper recorders.
September 1, 2023 Permit Renewal

Total Toxic Organics (TTO) List
40 CFR Part 413 Electroplating and 40 CFR Part 433 Metal Finishing
The term TTO shall mean total toxic organics,which is the summation of all quantifiable
values greater than 0.01 milligrams per liter(mg/1)for the following toxic organics:
[From 40 CFR Part 413.02(i)]
Acenaphthene 4-Chlorophenyl phenyl ether
Acrolein 4-Bromophenyl phenyl ether
Acrylonitrile Bis (2-chloroisopropyl) ether
Benzene Bis (2-chloroethoxy)methane
Benzidine Methylene chloride [Dichloromethane]
Carbon tetrachloride[Tetrachloromethane] Methyl chloride[Chloromethane]
Chlorobenzene Methyl bromide[Bromomethane]
1,2,4-Trichlorobenzene Bromoform[Tribromomethane]
Hexachlorobenzene Dichlorobromomethane
1,2-Dichloroethane Chlorodibromomethane
1;1,1-Trichloroethane Hexachlorobutadiene
Hexachloroethane Hexchlorocyclopentadiene
1-1-Dichloroethane Isophorone
1,1,2-Trichloroethane Naphthalene
1,1,2,2-Tetrachloroethane Nitrobenzene
Chloroethane 2-Nitrophenol
Bis (2-chloroethyl) ether 4-Nitrophenol
2-Chloroethyl vinyl ether (mixed) 2,4-Dinitrophenol
2-Chloronaphthalene 4,6-Dinitro-o-cresol
2,4,6-Trichlorophenol N-nitrosodimethylamine
Para-chloro-meta-cresol N-nitrosodiphenylamine
[4-chloro-3-methyl phenol] N-nitrosodi-n-propylamine
Chloroform[Trichloromethctne] Pentachlorophenol
2-Chlorophenol Phenol
1,2-Dichlorobenzene Bis (2-ethylhexyl)phthalate
1,3-Dichlorobenzene Butyl benzyl phthalate
1,4-Dichlorobenzene Di-n-butyl phthalate
3,3-Dichlorobenzidine Di-n-octyl phthalate
1,1-Dichlororethylene Diethyl phthalate
1,2-trans-Dichloroethylene Dimethyl phthalate
2,4-Dichlorophenol 1,2-benzanthracene [Benzo(a)anthracene]
1,2-Dichloropropane Benzo(a)pyrene[3,4-benzopyrene]
1,3-Dichloropropylene 3,4-Benzofluoranthene
[1,3-dichloropropene] I [Benzo(b)fluoranthene]
2,4-Dimethylphenol 11,12-Benzofluoranthene
2,4-Dinitrotoluene [Benzo(k)fluoranthene]
2,6-Dinitrotoluene Chrysene
1,2-Diphenylhydrazine Acenaphthylene
Ethylbenzene Anthracene
Fluoranthene I 1,12-Benzoperylene[Benzo(ghi)perylene]
2018 Total Toxic Organics List for 40 CFR Part 413-Electroplating and Part 433-Metal Finishing Page 1 of 2

Fluorene
Phenanthrene
1,2,5,6-Dibenzanthracene
[Dibenzo(a,h)anthracene]
Indeno (1,2,3-cd)pyrene
[2,3-o phenylenepyrene]
Pyrene
Tetrachloroethylene
Toluene
Trichloroethylene
Vinyl chloride[Chloroethylene]
Aldrin
Dieldrin
Chlordane (technical mixture and
metabolites)
4,44-DDT
4,4-DDE[pp-DDX]
4,4-DDD[pp-TDE]
Alpha-endosulfan
Beta-endosulfan
Endosulfan Sulfate
Endrin
Endrin aldehyde
Heptachlor
Heptachlor epoxide
[BHC-hexachlorocyclohexane]
Alpha-BHC
Beta-BHC
Gamma-BHC [Lindane]
Delta-BHC
[PCB-poly chlorinated biphenyls]
PCB-1242 [Arochlor 1242]
PCB-1254 [Arochlor 1254]
PCB-1221 [Arochlor 1221]
PCB-1232 [Arochlor 1232]
PCB-1248 [Arochlor 1248]
PCB-1260 [Arochlor 1260]
PCB-1060 [Arochlor 1016]
Toxaphene
2,3,7,8-Tetrachlorodibenzo-p-dioxin
[TCDD]
NOTE:Names in brackets and italics are alternate names for the same chemical
2018 Total Toxic Organics List for 40 CFR Part 413-Electroplating and Part 433-Metal Finishing Page 2 of 2