NC0047384_Pretreatment_IUP_Express_Renewal_20240509

CITY OF GREENSBORO
WATER RESOURCES DEPARTMENT
INDUSTRIAL WASTE SECTION
SIGNIFICANT INDUSTRIAL USER
WASTEWATER DISCHARGE PERMIT
SIU PERMIT NUMBER P069
EXPRESS CONTAINER SERVICES
IS AUTHORIZED TO DISCHARGE WASTEWATER
FROM A FACILITY LOCATED AT
208 S. CHIMNEY ROCK ROAD
GREENSBORO, NORTH CAROLINA
into the City of Greensboro Sanitary Sewer System
to the T.Z. OSBORNE Water Reclamation Facility
[NPDES PERMIT NUMBER NC0047384]
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.
lluj �` 3
Amy Vdiinoski Date
Pretreatment Coordinator

Page 2, SIU Permit#P069
EXPRESS CONTAINER
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.
September 1, 2023 Permit Renewal

Page 3, SIU Permit#P069
EXPRESS CONTAINER
Effective September 1, 2023
SECTION I—PERMIT MODIFICATION HISTORY
DATE MODIFIED REASON & DESCRIPTION OF MODIFICATION OR ACTION
June 1, 2003 PERMIT ISSUANCE
November 15, 2003 Changes to Section IV-Special Permit Conditions—Flow
Measurements due to recent changes in City of Greensboro flow
measurement/sampling requirements
PERMIT RENEWAL
Increase self-monitoring requirement for Non polar material
September 1, 2004 (SGT/HEM) from 316 months to 1/month. Revise expiration date per
comment from the State, that the permit cannot exceed 5 years from
original issuance date. Expiration date changed to May 31, 2008
March 1, 2005 Changed mercury limit to local limit. Mercury limit changed from
0.0031 mg/l to 0.00 1 mg/l
Name Change—Mast was sold at the end of 2005. The name of the
July 14, 2006 company was changed to Express Container Services. The business
remained unchanged.
PERMIT RENEWAL [due to permit getting out of TZO SIU date
rotation]
Page 5-Section II—flow changed from a daily maximum of 65,000 to
monthly average of 15,000; Page 6-Section IV.A. 2—added flow
July 7, 2008 readings submittal due 15th for previous months, Section IV.A. 2,
added additional contact, IV.B. —added paragraph concerning no
discharges, deleted last paragraph with dates for installation offlow
requirement (no longer applicable), IV..C. -removed 90-Day
Compliance (no longer applicable) replaced with Signature
Requirements
July 9, 2008 Permit Modified to increase flow limit from monthly average of 15,000
gpd to 35,000 gpd-Permit application error by facility.
September 1, 2008 PERMIT RENEWAL
1) Page 5, Section III-Changed minimum sampling requirement for
City to 1/year. 2) Page 6, Section IV.A.3.— changed effluent meter
July 1, 2011 calibration requirement from once per six-month period to once a
calendar year; 3) Page 6, Section IV.A.4- deleted names from permit
and included the position titles only 4) Page 7—Section IV.B Changed
self-monitoring report due date to 15th of month
PERMIT RENEWAL
September 1, 2013 Section II—Authorized Equalization as pretreatment process; Section
IV. -Added Special Condition D (Slug/Spill Control Plan)per DWQ
guidance. Section III. —Modified self-monitoring requirements.
PERMIT RENEWAL
September 1, 2018 Special Conditions Changes: Added Flow Measurement Calibration/
Verification Section; Modified flow language
September 1, 2023 PERMIT RENEWAL
September 1, 2023 Permit Renewal

Page 4, SIU Permit#P069
EXPRESS CONTAINER
Effective September 1, 2023
SECTION II - GENERAL INFORMATION
A. Description of Discharge
Pipe 01 —Process Wastewater from washing tank trucks and intermodal tank containers
transporting chemical and/or food grade products, boiler blowdown
Pipe 01 does not include domestic waste discharge.
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.
Flow equalization Chemical Precipitation
Flocculation Filter Press
Clarifier pH Adjustment
Spill Protection
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
Parshall flume located in pretreatment room next to the sludge settling tank
D. Composite Sampling Technique
A compliance sample for the purposes of this permit is:
-A grab sample for cyanide and non-polar material (SGT-HEM)
-A "flow proportional composite" sample taken by an automatic sampler consisting of
samples of equal volume taken over the entire workday for all composite parameters.
September 1, 2023 Permit Renewal

Page 5, SIU Permit#P069
EXPRESS CONTAINER
Effective September 1, 2023
SECTION III - EFFLUENT LIMITS AND MONITORING REQUIREMENTS
Effluent Limits and Monitoring Requirements for Pipe 01
THIS FACILITY IS REGULATED BY FEDERAL CATEGORICAL PRETREATMENT
STANDARDS FOR TRANSPORTATION EQUIPMENT CLEANING
[40 CFR PART 442.15 (a) AND 442.40 (no standards)]
EFFLUENT LIMITATIONS MONITORING FREQUENCY
EFFLUENT Daily Monthly 6-Month Sample CITY OF
CHARACTERISTICS Maximum Average Average Type PERMITTEE GREENSBORO
Flow (gallons per day) 35,000 # DAILY
H standard units 5.0— 12.0 Grab 1/ ear
BOD++ m /1 M C 2/6 months 1/ ear
Suspended Solids++ m /1 M C 2/6 months 1/ ear
Cadmium T m /1 M C 2/6 months 1/ ear
Chromium T m /1 M C 2/6 months 1/ ear
Copper T m /1 0.84 C 2/6 months 1/ ear
Lead T m /1 M C 2/6 months 1/ ear
Nickel T m /1 M C 2/6 months 1/ ear
Zinc T m /1 M C 2/6 months 1/ ear
Silver T m /1 M C 2/6 months 1/ ear
Selenium T m /1 M C 1/ ear
Cyanide (total) (mg/1) M Grab 1/6 months 1/year
Mercury (T) (mg/1) 0.001 C 2/6 months 1/year
Non-polar material 26 Grab 2/6 months 1/year
SGT-HEM) ^ m /1
ALL METALS ARE TO BE ANAL YZED AS TOTAL[TJ
^Silica Gel Treated Hexane Extractable Material (analyzed using EPA Method 1664)
#The Greensboro Industrial Waste Section does not consider Flow to be a pollutant and
flow data is not considered to be a report.
++All BOD concentrations over 200 mg/l and all Total Suspended Solids Concentrations
over 200 mg/L are subject to an Industrial Waste Surcharge
C - Composite Sample [See Section II Part D for permit-specific definition]
G - Grab Sample
M- Monitoring Only [See Local Pollutant Allocation Document to determine if an
Allocation has been issued for this parameter]
September L, 2023 Permit Renewal

Page 6, SIU Permit#P069
EXPRESS CONTAINER
Effective September 1, 2023
SECTION IV- SPECIAL PERMIT CONDITIONS
A. FLOW MEASUREMENT
Compliance with the flow limit in this permit shall be documented in the following manner:
1. The Permittee shall provide and maintain a refrigerated composite sampler and primary flow
measurement device for flow proportional sampling and flow measurement of the permittee's
process wastewater discharge.
2. The effluent process flow meter readings shall be recorded daily and the daily effluent flow
calculated in gallons per day. Flow measurement records shall be submitted to the City of
Greensboro Industrial Waste Section monthly. Data is to be submitted by the 151h of each
month for the previous month's flow measurements.
3. The permittee shall maintain permanent flow records and maintenance and calibration
records on-site for a minimum of three years. These records shall be available to the City of
Greensboro Industrial Waste Section during inspections or upon request.
4. Immediate notification, within 24 hours of becoming aware of the problem, shall be provided
to the Pretreatment Coordinator [336-433-7227] or Pretreatment Compliance Specialist [336-
373-3285] by phone or e-mail for any periods in which the effluent meter is inoperable with
the exception of periods for maintenance/calibration. This notification shall include the
cause of the malfunction/failure, anticipated repair time and/or plan of action to allow the
permittee to comply with the requirement to record the flow meter readings daily.
5. Malfunction/failure of effluent flow meters that are used for sewer billing purposes shall also
be immediately reported, within 24 hours of becoming aware of the problem, to the Water
Resources Customer Service Division by phone---Assistant Manager [336-373-4108] or
Manager [336-373-2639]. Failure to do so will result in the Industrial Waste Section and the
Water Resources Customer Service Division reverting back to the incoming water meter to
determine compliance and billing.
6. The wastewater meter must have a non-resettable totalizer that reads in cubic feet or gallons.
There shall be no by-pass capability of the wastewater metering devices and monitoring
point(s).
7. If the wastewater meter is being used for billing or compliance, it must have permanent flow
records (i.e. strip chart recordings) that include at minimum the following basic information:
date, time, totalizer reading (with units), interval flow volume(with units), maximum flow
rate (with units), and primary measuring device type. Any interruption in such records with
the exception of periods for maintenance/calibration are a violation of this permit and may
result in a civil penalty each day the interruption is allowed to continue.
September 1, 2023 Permit Renewal

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EXPRESS CONTAINER
Effective September 1, 2023
8. The wastewater meter shall have a back-up power source (battery or generator)to ensure
uninterrupted measurement of the discharge flow in the event of a power failure unless loss
of power automatically prevents any discharge from the facility. The back-up source shall
provide power to the wastewater meter's sensor and permanent flow records for a minimum
of 12 hours.
B. 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 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 information, including the possibility of fine and
imprisonment for knowing violations. [40 CFR Part 403.6]
C. 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 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 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 contain, at a
minimum the following elements:
■ 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 11, 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
September 1, 2023 Permit Renewal

Page 8, SIU Permit#P069
EXPRESS CONTAINER
Effective September 1, 2023
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.
D. PERMITTEE SAMPLING AND MONITORING REPORT SUBMITTAL DATES
Permittee Sampling for the pollutant limitations in Section III (Effluent Limits and Monitoring
Requirements) of this permit shall be conducted in the following manner:
1. Samples for the January 1-June 30 Reporting Period shall ALL be taken during the
months of January, February and/or March. The compliance report shall be submitted on
or before APRIL 15 of each year.
2. If there are no discharges during months designated for sampling, the April 15
compliance report shall be submitted with the notation "NO DISCHARGE/NO
SAMPLING". If there is a discharge after March and prior to June 30, self-monitoring is
still required to meet the permit monitoring requirements and that data shall be submitted
with the corresponding monthly flow data.
3. Samples for the July 1-December 31 Reporting Period shall ALL be taken during the
months of July, August and/or September. The compliance report shall be submitted on
or before OCTOBER 15 of each year.
4. If there are no discharges during months designated for sampling, the October 15
compliance report shall be submitted with the notation "NO DISCHARGE/NO
SAMPLING". If there is a discharge after September and prior to December 31, self-
monitoring is still required to meet the permit monitoring requirements and that data shall
be submitted with the corresponding monthly flow data.
If there are no discharges during an entire semi-annual reporting period, a letter must be
submitted to the Industrial Waste Section by July 15 or January 15 stating there was no discharge
and no sampling for that period. This letter must be signed and certified by the signatory official.
E. FLOW MEASUREMENT 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
September 1,2023 Permit Renewal

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EXPRESS CONTAINER
Effective September 1, 2023
3. data trend sheets, strip or circular chart recordings that have back-up and fail-safe capabilities
are also required to be maintained.
4. Any industry may conduct meter calibration more frequently than required in this permit.
The following flow meters/systems have no calibration requirements:
1. Industries with custom built Memtek©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