NCG080997_City of Wilson SWPPP_20200730

STORMWATER POLLUTION
PREVENTION PLAN
WilsonNC
CHARLES W. PITTMAN III
OPERATIONS CENTER
1800 HERRING AVENUE
WILSON, NORTH CAROLINA 27893
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Prepared by:
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& ASSOCIATES - P .A . _t_
ENGINEERS • SURVEYORS • PLANNERS

TABLE OF CONTENTS
ITEM PAGE NUMBER
I. INTRODUCTION I-1 — 1-2
II. FACILITY INFORMATION II-1 — 11-6
III. SITE PLAN III-1 — III-10
IV. SPILLL RESPONSE PROCEDURES IV-1 — IV-5
V. BEST MANAGEMENT PRACTICES V-1 — V-14
VI. INSPECTION CHECKLISTS VI-1 — VI-5
VII. STORMWATER DISCHARGE OUTFALL MONITORING VII-1 — VII-5
VIII. STAFF TRAINING VIII-1 — VIII-2
IX. SUPORTING DOCUMENTS
a. APPENDIX A-COMPLETED INSPECTION CHECKLISTS/FORMS
b. APPENDIX B-INSPECTIONCHECKLISTS/FORMS/TRAINING
DOCUMENTS
c. APPENDIX C-ACRONYMS AND DEFINITIONS

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I

I. Introduction
This Stormwater Pollution Prevention Plan (SWPPP) has been prepared to assist the City of
Wilson to remain in compliance with the United States Environmental Protection Agency
(USEPA) National Pollutant Discharge Elimination System (NPDES) program under the
amended 1987 Federal Water Pollution Control Act. The three objectives of this SWPPP are: (1)
to prevent citations of surface water quality, groundwater quality, and sedimentation and erosion
control, (2) to eliminate and prevent illicit discharges to stormwater drainage systems, and (3) to
implement and maintain Best Management Practices that identify, reduce, eliminate, and/or
prevent the discharge of stormwater pollutants. The goal of Pollution Prevention and a Good
Housekeeping Program is to eliminate pollution at its source. This SWPPP has been prepared
in accordance with standard engineering practices.
Some states have been delegated NPDES general permitting authority by the USEPA. The
North Carolina Department of Environmental Quality (NCDEQ) Division of Water Quality (DWQ)
administers the NPDES program regulating discharges of stormwater in State waters. The
discharge permits are part of a program delegated to North Carolina by the USEPA, under the
federal Clean Water Act (CWA). This SWPPP has been prepared for the City of Wilson's
Engineering Department for the discharges of stormwater. These municipal operations will be
referred to hereafter as the Facility.
This plan requires the facility personnel to perform certain compliance activities. The stormwater
personnel must characterize and monitor stormwater drainage areas and stormwater quality.
The stormwater personnel must then implement necessary BMPs that can include
programmatic, operational, and structural practices that eliminate or reduce stormwater
pollution.
In general, the Facility and its personnel should:
• Establish spill containment procedures, drainage control, and security measures;
• Learn/ implement stormwater pollution prevention procedures and requirements;
Introduction Page 1 of 2

• Follow written standard operating procedures for hazardous material handling and
storage;
• Perform routine inspections; and
• Maintain records to document successful completion of SWPPP requirements.
Introduction Page 2 of 2

II. Facility Information

II. Facility Information
Facility Name: Charles W. Pittman III Operations Center
Facility Address: 1800 Herring Avenue Wilson, NC 27893
Facility Contacts and Phone Numbers:
Bill Bass P.E.
Public Works Director
[phone]
Jimmy Taylor
Engineering Manager
[phone]
Noah Parsons
Stormwater Compliance Specialist
252/ 296-3305
The Charles W. Pittman III operations Center serves as the Operations Center for the City of
Wilson. This facility is located at 1800 Herring Avenue Wilson, NC. The facility serves as both
an administrative office and a municipal facility. The administrative offices consist of Public
Works, Greenlight, Human Resources, Electrical & Gas Operations, & Sign Shop. The
municipal facility part of the operations Center includes the Greenlight Garage, Electrical Line
Truck Storage/Parking. Electrical Equipment Storage, Electrical Maintenance Shop, Storm
Water Storage, City Warehouse. This facility is bounded on the north and northeast by Herring
Avenue, on the east/southeast by U.S. Highway 301 and on the west/southwest by the run of
Toisnot Swamp. There exist four concentrated stormwater discharge points for this site. All
four of these stormwater discharge points enter the Toisnoit Swamp either directly or discharge
within one thousand feet of Toisnot Swamp. The wooded area along the southwestern property
line is a Freshwater Emergent Wetland per the National Wetland Inventory. The four(4)
concentrated stormwater discharge points are more specifically described as follows:
Facility Information Page 1 of 6

1. Stormwater Discharge Point #1 is located within the southernly right of way of Herring
Avenue and is a portion of the stormwater drainage system supporting Herring Avenue.
The point is located in the inlet end of an existing catch basin with the discharge pipe
being an 18" diameter RCP with a discharge elevation of 100.48. See Inset "B" for aerial
view of discharge point.
2. Stormwater Discharge Point#2 is located adjacent to the southernly right of way of
Herring Avenue on the easterly side of the truck driveway entrance to the City of Wilson
Operational Center. The point is located in an existing drop inlet and being a 15" diameter
RCP located at the outlet end of the drop inlet with a discharge elevation of 93.50. See
Inset "B" for aerial view of discharge point.
3. Stormwater Discharge Point#3 is located on the westerly side of the City of Wilson
Operation Center discharging into Toisnot Swamp. The point is located at the discharge
end of a 30" RCP a discharge elevation of 88.39. See Inset "F" for aerial view of
discharge point.
4. Stormwater Discharge Point#4 is located on the westerly side of the City of Wilson
Operation Center adjacent to a portion of the Electrical Department Storage Yard
discharging into Toisnot Swamp. The point is located at the discharge end of a 36" RCP a
discharge elevation of 86.75. See Inset "G" for aerial view of discharge point.
The Municipal Operations Center performs a variety of tasks associated with providing
necessary municipal services to City of Wilson residents. The following buildings/operations are
located at the Operations Center:
1. Public Works Administration - #200
2. Electric and Gas Operations Office -#250
3. Human Resources Office - #1802
4. Electric and Gas Warehouse -#200
5. Greenlight Administration -#200
6. Greenlight Garage - #2400
7. Greenlight Tower Building - #1600
Facility Information Page 2 of 6

8. Gas Division -#1200
9. Electric Line Truck Storage/Parking -#800
10. Electric Equipment Storage -#1300
11. Electric Line Trucks -#1500
12. Electric Maintenance Shop -#500
13. Transformer Laydown Area
14. Electric Wire Storage Shed -#1900
15. Power Pole Laydown Area
16. Gas Distribution Shop -#1400
17. Stormwater Supplies -#2100
18. Stormwater Shed -#1800
19. Car Wash -#300
20. City Maintenance Shop -#300
21. Health Department Vehicle Storage -#300
22. Fueling Facility/Activities -#2000
23. Water& Sewer Vehicle & Metal Storage -#700
24. Street Division Storage -#900
25. Street Division Storage -#1000
26. Streets Division Storage -#1100
27. Bus Garage -#600
28. Sign Shop & Office -#400
29. Environmental Services Garage #3000
30. Electrical Department Shed #S-3200
31. Salt Shed/Storage #S-3100
There exist multiple potential sources of stormwater pollution based on the multitude and type of
services performed at the Facility. The following are potential sources of pollution:
1. Salt Shed Building#3100
2. Street Division Storage #300
3. Fueling Activity#S2000.
4. City Maintenance Shop #300
5. Car Wash located within City Maintenance Shop#300
6. Gas Distribution Shop?#1400
7. Power Pole Laydown Area and Adjacent Storage Area.
Facility Information Page 3 of 6

8. Diesel Tank located southeast of Electrical Maintenance Shop
9. New Oil Storage#2600
10. Electrical Maintenance Shop#500.
11. Old Transformers
12. Transformer Laydown Area
13. Electric Equipment#2800
14. Electric Equipment Storage 1300
15. Fuel Storage and Transfer Areas
Although most non-stormwater discharges are a pollutant when discharged into the facility
stormwater system; discharges of non-stormwater may also be allowed if such discharges have
been determined not to be significant sources of pollutants to the stormwater system. The
following are potential sources that are allowed as a non-stormwater discharge:
1. Water line and fire hydrant flushing;
2. Landscape irrigation;
3. Uncontaminated groundwater infiltration;
4. Uncontaminated pumped groundwater;
5. Discharges from uncontaminated potable water sources;
6. Foundation and/or footing drains;
7. Air conditioning condensate;
8. Irrigation waters;
9. Springs;
10.Water from crawl space pumps;
11. Lawn watering;
12. Residential and charity car washing;
13. Dechlorinated swimming pool discharges;
14. Street wash water; and
15. Flows from firefighting activities
SWPPP Personnel
The following Stormwater Pollution Prevention Personnel will be involved in implementing the
SWPPP. Each team and/or member has specific task and are delegated those tasks by the
Facility Information Page 4 of 6

Public Works Director. The Public Works Director may designate any Team Leader or Team
Member at his discretion.
Responsible Official: Public Works Director
1800 Herring Avenue
Wilson, NC 27893
Current Responsible Official: Bill Bass, P.E.
Office Phone: [phone]
E-Mail: bbass(c�wilsonnc.org
Responsibilities:
1. Appoint Team Members
2. Review and certify the SWPPP
3. Ensure SWPPP is implemented
4. Budget for existing, new, and modified BMPs;
5. Review and approve selected BMPs;
6. Receive spill reports and non-compliance reports; and
7. Review and approve Plan revisions and new BMPs
8. Identified by SWPPT.
Team Leader: Stormwater Compliance Specialist
1800 Herring Avenue
Wilson, NC 27893
Current Stormwater Environmental Specialist:
Noah Parsons
Office Phone: [phone]
E-Mail: nparsons(a�wilsonnc.orq
Responsibilities:
1. Review and Revise SWPPP when needed;
2. Participate in Compliance Evaluations
3. Ensure Team members are trained and familiar with
Facility Infotiriation Page 5 of 6

4. SWPPP requirements;
5. Coordinate and implement operational and source
control BMPs for the facility;
6. Schedule and conduct Team meetings;
7. Ensure that the Team carries out duties listed below;
and
8. Document the Plan Implementation Schedule annually
(Form 1 in Appendix C).
9. Conduct visual observations at stormwater discharge
outfalls as specified in the SWPPP;
10. Evaluate the adequacy of the SWPPP and modify as
necessary, upon approval of the Responsible
Official/City Engineer.
Team Members: To be appointed by Responsible Official.
Responsibilities:
1. Participate in compliance evaluations;
2. Report Problems to the to the Team Leader
3. Report needed maintenance or degradation of BMPs to
Team Leader;
4. Conduct routine site inspections, as required;
5. Implement best management practices;
6. Perform record keeping and documentation as required
by the SWPPP; and
7. Participate in the annual updating and certifications as
required by the SWPPP.
The Team will be comprised of knowledgeable stormwater personnel that are employed by the
City of Wilson. This team should consist, as much as possible, of a diverse group of employs
from multiple departments. The Responsible Official, with the assistance of the Stormwater
Environmental Specialist, is responsible for appointing team members.
Facility Information Page 6 of 6

III . Site Plan

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Site Plan Page 10 of 10

IV. Spill Response Procedures

IV. Spill Response Procedures
This plan provides for measures and procedures to prevent or minimize contamination of
stormwater runoff from the site during normal operations and in the event of a spill. The
potential spill sources with high risk for contaminating stormwater include the storage and
handling of fuels/ hazardous substances and vehicle/ equipment maintenance activities.
Accidents and careless handling during these activities can cause spilled liquids to enter the
stormwater drainage system. During transfer of fuel or delivery of hazardous substances to
Facility areas, the driver and handlers will be responsible for preventing spills. The driver will
ensure that all hoses are secure and that proper absorbent materials (e.g., pads, booms and
socks) are available before unloading. During all fuel delivery operations, the driver will remain
with the vehicle at all times. Absorbent pads and booms are to be located near the fuel delivery/
connection points. Reasonable Spill Prevention items include: review and update materials
inventory list (emphasis on hazardous substances), identify potential spill sources, establish
incident reporting procedures, develop inspection procedures, and review previous incidents.
Employee awareness is the key to an effective spill prevention and response program. New
personnel will be taught spill prevention practices. Maintenance personnel will gain a sufficient
understanding of the objectives of the spill prevention program. Spill prevention training will
highlight previous spill events, equipment failures, remedies taken, and newly developed
prevention measures.
In the event of a major spill or unknown substance, remember safety first and do not take risks.
Contact the Responsible Official and Team Leader as soon as reasonably possible. The
following is a protocol to follow for major spills:
1. Remove unnecessary personnel from the spill area.
2. Contact the Fire Department.
3. If the spill has any gas or vapor move upwind and at a higher elevation.
4. Isolate/Stop the spill at its source, if it can be done safely. Shut off any valves and/or
shut down any pumps if this can be done safely.
5. Contact the Team Leader. Stormwater Compliance Specialist. Currently Noah Parsons,
252-296-3305. [e-mail].
Spill Response Procedures Page 1 of 5

6. Cover drains and/or protect stormwater inlets with absorbent booms, if this can be done
safely.
7. Report Spill to the County Environmental Emergency Management Official.
In the event of a minor spill and of known substance, remember safety first and do not take
risks. Contact the Responsible Official and Team Leader as soon as reasonably possible. The
following is a protocol to follow for major spills.
1. Remove unnecessary personnel from the spill area.
2. If the spill has any gas or vapor move upwind and at a higher elevation.
3. Isolate/Stop the spill at its source, if it can be done safely. Shut off any valves and/or
shut down any pumps.
4. Cover drains and/or protect stormwater inlets with absorbent booms, if this can be done
safely.
5. Dig a ditch, use absorbent material, or sand to build a temporary berm to prevent entry
into storm water, water or sewer.
6. Use rubber gloves, boots and face shield as needed to avoid contact with the material.
7. Pump or remove excess material.
8. Use absorbent materials, absorbent pads, absorbent booms etc., or sand to clean up
the spill.
9. Place the saturated absorbent materials in the disposal bags.
10. Dispose of the bags in a drum container that can be carried to a proper disposal
location.
11. If the spills occur in gravel areas, remove the gravel and soil containing the spilled
substance. This gravel and soil should be disposed of properly.
12. If the area of the spill contains an oil water separator, check the separator for excessive
oil and remove as needed.
13. If the spill occurred on a hard surface, detergent can be used to wash the surface if the
water can be drained into a sanitary sewer.
14. Report Spill to the County Environmental Emergency Management Official.
In order to complete the spill cleanups it is imperative that a complete and adequate spill kit be
positioned in an easily accessible location near the hazardous substance use and storage areas
at the Facility. Facility personnel should have knowledge of the location of and should have
Spill Response Procedures Page 2 of 5

access to a centrally located standard spill kit. Facility personnel shall use the standard spill kit
for both minor and major spill incidents. The spill kit should have sufficient absorbents to contain
a spill from the largest container within the hazardous substance storage location. Absorbent
pads will be located at equipment shops, oil changing and lube bays, and any building where
55- gallon drums are stored in bulk. For your reference two types of spill kits are listed below.
Standard spill kits will consist of spill response equipment sufficient to control and contain a 25-
gallon spill of POL. A typical standard spill kit consists of the following:
1. 15 absorbent booms (approximately 3" X 48")
2. 23 absorbent pads (approximately 18 inch square)
3. 2 absorbent pillows (approximately 18 inch square)
4. 15 pounds of dry granular absorbent
5. 3 - 6 mil thickness 30-gallon plastic disposal bags
6. 1 coveralls, XL
7. 1 pair Nitrile gloves
8. 1 pair goggles
9. plastic container to hold items
10. flat edge shovel
Small spill kits will consist of spill response equipment sufficient to control and contain a 5-gallon
spill of POL. A typical small spill kit consists of the following:
1. 2 absorbent socks (approximately 3" X 48")
2. 10 absorbent pads (approximately 18 inch square)
3. 10 pounds of dry granular absorbent
4. 1 -6 mil thickness 30-gallon plastic disposal bags
5. 1 pair gloves
6. 1 pair goggles
7. plastic container to hold items
8. flat edge shovel
If any items from the spill kit are used, contact the Team Leader in order to replace the supplies
in an expeditious manner.
Spill Response Procedures Page 3 of 5

In the event of a petroleum spill or discharge, once the spill is contained and no longer an
immediate danger to any persons or the environment, the spill must be reported to NCDENR,
usually within 24 hours. Below is the NC General Statute that indicates the reporting
requirements thresholds. The local immediate reporting contact is Wilson County Emergency
Management @ 252-399-2830 The reporting office for this facility is the Raleigh Regional
Office © 919-791-4200 and its hours are M-F 8:00 am — 5:00 pm. If the spill is significant and is
an immediate danger to human health, then the 24 hour emergency response number should be
called at(800) 858-0368 to report the spill.
NC General Statutes - Chapter 143 Article 21A
143-215.85. Required notice
A person who owns or has control over petroleum that is discharged into the environment
shall immediately take measures to collect and remove the discharge, report the discharge to
the Department within 24 hours of the discharge, and begin to restore the area affected by the
discharge in accordance with the requirements of this Article if the volume of the petroleum that
is discharged is 25 gallons or more or if the petroleum causes a sheen on nearby surface water
or if the petroleum is discharged at a distance of 100 feet or less from any surface water body. If
the volume of petroleum that is discharged is less than 25 gallons, the petroleum does not
cause a sheen on nearby surface water, and the petroleum is discharged at a distance of more
than 100 feet from all surface water bodies, the person who owns or has control over the
petroleum shall immediately take measures to collect and remove the discharge. If a discharge
of less than 25 gallons of petroleum cannot be cleaned up within 24 hours of the discharge or if
the discharge causes a sheen on nearby surface water, the person who owns or has control
over the petroleum shall immediately notify the Department.
In order to fully comply with all applicable reporting laws, Article 21A. Oil Pollution and
Hazardous Substances Control. Part 1. General Provisions should be reviewed upon
a spill or discharge.
Upon the remediation of a hazardous material spill, a Spill incidence report should be
completed. The following should be included in the report:
1. Name and telephone number of individual who discovered and/or reported spill
2. Location of spill and waters involved
Spill Response Procedures Page 4 of 5

3. Time spill was observed
4. Cause and circumstance of spill
5. Source of spill
6. Existing or potential hazards
7. Personal injuries or casualties, if any
8. Type of material released
9. Volume of spill
10. Type of cleanup operation, time initiated, and approximate time table to control
contain and clean up spill
11. Effectiveness of the cleanup operations
12. Weather conditions
13. Persons on the scene and a contact person
Spill kits should be located at a minimum in the following locations:
1. Street Division Storage - #1100
2. City Maintenance Shop - #300
3. Electrical Maintenance Shop - #500
4. Warehouse -#200
5. Stormwater—#2100
Spill Response Procedures Page 5 of 5

V. Best Management Practices

V. Best Management Practices
The Facility must consider and implement practical best management practices (BMPs). This
section describes the process used to select the BMPs to be implemented as well as provides
further description of purpose and intent of the BMP. Potential stormwater pollution is controlled
through the use of BMPs. BMPs are generally divided into two categories:
1. General BMPs - which are general in nature and apply to most City-owned municipal
facilities,
2. Site-Specific BMPs - which pertain to a specific facility (e.g., construction of a concrete
containment around an individual fuel tank).
NCDENR and USEPA emphasize the establishment of pollution prevention measures and
BMPs that reduce the potential for pollutant discharges at the source. Source reduction
measures include preventative maintenance, chemical substitution, spill prevention, good
housekeeping, pollution prevention training, and proper materials management. Where such
practices are not appropriate to a particular source or do not effectively reduce pollutants in
stormwater discharges, NCDENR and USEPA support the use of source control measures and
BMPs such as material segregation, or covering, debris control, vegetative filter strips,
infiltration and stormwater detention or retention, runoff diversion, and dust control. Like source
reduction measures, source control BMPs are intended to keep pollutants out of stormwater.
The remaining classes of BMPs, which involve recycling or treatment of stormwater, allow the
reuse of stormwater or attempt to lower pollutant concentrations prior to discharge.
General BMPs
General BMPs are practices that are generic and can be applied throughout the City of Wilson's
Operation Center. The following are several general BMPs that should be followed at the
Operations Center.:
Best Management Practices Page 1 of 14

On the Job Training
1. Conduct and document on the job training for both safety and stormwater pollution
control
Hazard Communication
1. Ensure MSDSs are available and accessible in the work area
2. Ensure containers are properly labeled
3. Provide HAZCOM training to employees
4. Ensure proper personal protective equipment is available and used when required
General
1. Provide and maintain emergency spill kits in designated areas
2. Post emergency telephone numbers where they can be readily found in case of an
emergency
3. Make MSDSs available where employees may be exposed to any hazardous
chemicals
4. Signs concerning "Exiting from buildings," are posted where appropriate
5. Mark all exits an exit sign
6. Mark all doors, passageways, or stairways, that are neither exits nor access to exits
and which could be mistaken for exits, "NOT AN EXIT"
7. Ensure all exits are free of obstructions
8. Provide at least two means of egress from elevated platforms, pits, or rooms
9. Provide obvious and direct exits
10. Designed exit doors to be opened from the direction of exit travel without the use of a
key or special knowledge or effort when the building is occupied
Housekeeping
1. Maintaining dry and clean floors
Best Management Practices Page 2 of 14

2. Clean up dry loose debris with brooms before using wet cleaning to prevent solids from
discharging to drains
3. Use drip pans
4. Use dry cleanup methods to collect spills
5. Clean up spills promptly and thoroughly
6. Regularly pick up and disposing of garbage, debris, and waste materials
7. Keep all areas exposed to storm water clean and orderly
8. Inspect drains, loading docks, outdoor storage and waste collection areas daily for signs
of contamination
9. Ensure areas are free from tripping hazards, adequately illuminated.
10. Remove combustible scrap, debris, and waste from the work site promptly
Preventative Maintenance
1. Inspect and maintain storm water management devices and equipment designed to
prevent spills, leaks, erosion, and flooding
2. Regularly clean storm water catch basins, sediment traps, and oil-water separators to
remove debris and make sure that the systems are working properly
3. Regularly inspect, test, clean, repair, and replace chemical handling equipment such as
pumps, hoses, and seals on a regular schedule.
Loading and Unloading Procedures
Prior to loading and unloading inspect areas
1. Check for leaks from tanks, containers, and/or equipment
2. Check for stained concrete and/or soil
3. Check to ensure inlet protection is available
4. Check to ensure a spill kit available, adequate, and fully stocked and adequate
5. Check secondary containment
6. Check to ensure drain for secondary containment is closed
Loading and Unloading Procedure
Best Management Practices Page 3 of 14

1. Check incoming vehicles and equipment for leaks
2. Have the driver sign in with the operator
3. Notify the appropriate maintenance/utility personnel
4. Have the driver set the hand brake, shut off his truck engine, and remove the key
5. Instruct the driver and the maintenance/utility personnel to stay in sight with an
unobstructed view of the hookup during unloading
6. Notify appropriate personnel in the event of a spill and request assistance, if necessary.
7. When unloading has been completed, check tank line valves and close and lock all fill
caps. Have the driver close the valves on the tanker
8. Check for any evidence of oil leaked during the unloading operation and take
appropriate clean-up action
9. Check the drains and outlets on tank trucks for leakage prior to departure
Proper Material Storage and Handling
1. Store drums and containers of chemicals and wastes away from direct traffic routes
2. Follow procedures when loading, unloading, or transferring materials, chemicals, fuels,
and waste
3. Use the appropriate equipment when handling chemicals
4. Store materials, waste and used oil in appropriate areas
5. Store containers inside and on pallets or similar devices whenever possible
6. Place secondary containment under containers
Often the most reliable method used to reduce pollutants in storm water runoff is to eliminate
potential exposure.
1. Move maintenance activities indoors or under a roof
2. Divert run off away from areas where chemicals are used or stored
3. Equipment and materials that are not directly associated with loading or unloading
activities should be stored indoors
4. If activities are conducted outdoors cover all storm drains and clean up immediately after
each activity and/or at the end of the day.
Above Ground Storage Tanks
Best Management Practices Page 4 of 14

1. Check and maintain the condition of all tanks, piping systems, and valves in good
condition
2. Check and maintain alarm systems
3. Check and maintain level indicators
4. Check and maintain spill containment in good condition
5. Check to ensure tanks are constructed of materials compatible with the substance
stored
6. Check to ensure appropriate containment and diversionary structures prevent
discharged materials from reaching waters of the state
7. Construct tanks with secondary containment or store in an area that can contain the
entire contents of the tank
8. Lock fill and discharge ports when not in use
9. Label tanks with contents
10. Coat tanks and associated piping to prevent corrosion and degradation
11. Inspect water being drained from secondary containment for the presence of oil
before discharging. In the event that oil is present, it must be collected and disposed
or recycled
12. Inspect tanks on a weekly basis
13. Maintain weekly inspection records, Material Safety Data Sheets, training records,
design specifications/manufacturer's data, and testing/repair records
14. Separate chemicals which will react with each other
Underground Storage Tanks
1. Track throughput (input/output) of materials in the tank to aid in release detection
2. Register all USTs with the state
3. At least annually, Test USTs and piping for integrity
4. Perform and document daily monitoring
5. Perform and document weekly UST Inspections
6. Maintain maintenance records
7. Maintain annual Integrity Test Record
8. Maintain current notification
9. Maintain records of releases or reports when there has been a loss of contents
Best Management Practices Page 5 of 14

Petroleum, Oils, and Lubricants (POL) Storage
Proper storage of POL can prevent costly spills and reduce hazards. Spills of POL cause
product loss, increase environmental management costs, and require personnel to divert their
attention away from other activities.
1. Do not store with incompatible materials
2. Close and secure containers
3. Keep spill kits near any location where POL is used or stored
4. Keep fire extinguisher nearby
5. Store away from high traffic areas
6. Store away from or near sources of high heat or open flames
7. Install NFPA markings on buildings and containers for hazard communication
8. Maintain MSDSs
9. Maintain accurate inventories
10. Maintain good housekeeping
11. Inspect dispensing systems daily for leaks, spills, and corrosion
12. Maintain a daily inspection log and weekly inspection records
Used Oil Storage
Standards for the management of used oil are found in 40 CFR 279. Requirements include
labeling, storage and disposal prohibitions. Whenever possible, recycle used oil. Most local
governments should be able to take advantage of local commercial recyclers that can handle
their material and exchange of used oil when purchasing new oil.
1. Check the area around the storage for signs of leaks or spills
2. Store used oil in containers or tanks that are secure, protected from weather, and in
good condition (No excessive rust, dents, punctures, free of visible leaks, etc.)
3. Store containers in a secure area that has secondary containment
4. Do not mix used oil with other waste materials
5. Label containers with the words "Used Oil"
6. Promptly clean up any spills of used oil
7. Close containers when not adding or removing used oil
Best Management Practices Page 6 of 14

8. Recycle used oil through an approved vendor
9. Maintain shipping manifests and used oil storage inspections
10. Do not use of waste oil for dust suppression and weed control
Solid Waste Collection
Solid waste management helps prevent fires, storm water pollution, and helps control disease-
carrying vectors. Collection of waste must be performed in a safe efficient manner, prevent fires,
safety hazards, pest harborage and disease carrying vectors. The number and size of
containers must be sufficient to prevent overflow of waste.
1. Close all outside trash containers in areas that may come into contact with
precipitation to prevent storm water collecting in the containers and becoming
contaminated
2. Inspect all trash collection frequently
3. Do not dispose of liquids in solid waste containers
4. Do not dispose of tires - recycle tires are to be recycled
5. Post signs on trash containers listing prohibited items, such as: "No Hazardous
Waste, No Recyclable Materials, and No Liquids"
Contact the trash hauler or landfill for prohibitions on waste that may be disposed. Periodically
inspect waste haulers while on-site to ensure that they are performing their work in a clean and
compliant manner. Maintain records of disposal permission letter from landfill operator and solid
waste weekly inspection.
Best Management Practices Page 7 of 14

Vehicle and Equipment Storage, Maintenance, and Washing
1. Regularly inspect equipment that could result in leaks/ spills
2. Ensure all stored equipment is free of leaks and drips
3. Where practical perform maintenance activities indoors
4. Do not pour liquid waste down drains
5. Recycle engine fluids and batteries
6. Drain fluids and properly store wrecked vehicles and equipment
Wash Areas
1. Use nontoxic cleaning compounds
2. Use soaps and detergent that are designed for use in oil water separators
3. Use phosphate-free and bio-degradable detergents
4. Contain wash water or otherwise keep out of the storm drainage system
5. Perform cleaning operations indoors or 1) ensure wash-water drains to the sanitary
sewer system, 2) collect runoff and providing treatment or recycling, or 3) provide
equivalent measures. If sanitary sewer is not available and cleaning operations take
place outdoors, the cleaning operations shall take place on grassed or graveled
areas to prevent discharges of the wash water into the storm drains or surface
waters.
6. Where cleaning operations cannot be performed as described above and when
operations are performed in the vicinity of a storm drainage collection system, the
drain is to be covered with a portable drain cover during clean activities. Any excess
water shall be removed and properly handled prior to removing the drain cover.
7. The direct discharge of vehicle and equipment wash waters, including tank cleaning
operations, are not authorized and must be covered under a separate NPDES permit
or discharged to a sanitary sewer in accordance with applicable industrial
pretreatment requirements
Fueling
1. Fuel tanks are to be filled carefully without allowing over-splash
2. Protect fueling areas from precipitation and run-on or run off
Best Management Practices Page 8 of 14

3. Avoid washing down fueling area with water
Pesticide Application
Pesticides can cause serious health effects and environmental damage.
1. Any contractors applying pesticides must be licensed
2. Use all pesticides in accordance with manufacturer's recommendations
3. Hire licensed contractors to apply any required pesticides
4. Maintain pesticide usage reports, contractor license, and MSDS
Oil Water Separators (OWS)
OWS can be effective at removing oil from wastewater. They are used primarily on wash racks
and equipment storage areas where there is the potential for oil to leak onto the ground. OWS
remove oils by trapping floating oil in one section, allowing water to flow out, and allowing sand,
grit, sludge, and heavy grease to settle. The water then flows to the sewer or other treatment.
Separators must be cleaned periodically to ensure proper operation. Liquids must be pumped
from the collection basin into a drum for disposal as used oil. Solids must be placed into an
open top drum, sealed, and labeled. Samples must be analyzed and the material must be sent
for disposal, as appropriate. Most septic tank cleaning service companies can pump separators
and dispose of the waste.
1. Post signs giving instructions for use
2. Label all piping including the direction of flow
3. Do not allow the direct disposal of petroleum, oil, or lubricants (POL) in an OWS
4. Do not add unauthorized chemicals
5. Do not use soaps or detergents that are not intended for use in OWS
6. Keep mud and other debris out of OWS when possible
7. Perform visual inspection daily and weekly written inspections
8. Clean out the OWS according to manufacturer's recommendations
9. Maintain weekly inspection, maintenance, cleaning, and disposal records
Best Management Practices Page 9 of 14

Hazardous Waste
1. Document the amount and kinds of Hazardous Waste generated
2. Document how waste are determined to be Hazardous Waste (i.e., knowledge
and/or testing)
3. Maintain copies of completed manifests and land disposal notifications used to ship
hazardous wastes for at least 3 years
4. Store Hazardous Waste in proper containers or tanks
5. Properly mark and date Hazardous Waste containers or tanks
6. Secure, closed, protected from weather, Hazardous Waste containers
7. Store Hazardous Waste in containers that are compatible with the contents, properly
grounded, and in good condition
8. Provide adequate aisle space and secondary containment
9. Provide adequate spill response equipment
10. Provide an emergency communication phone or radio
Used Antifreeze
Used antifreeze can be toxic. Used antifreeze must be collected for proper management. Most
facilities should be able to take advantage of local commercial recyclers that can handle their
material.
1. Label containers accumulating used antifreeze with the words "Used Antifreeze"
2. Contracts must be with licensed vendors to provide for exchange of used antifreeze
when purchasing new antifreeze
3. Store used antifreeze in antifreeze containers only
4. Do not mix oil or other chemicals with used antifreeze
5. Store containers in a secure area
6. Close containers when not adding or removing used antifreeze
7. Maintain shipping records and used antifreeze storage weekly inspections
Best Management Practices Page 10 of 14

Used Oil Filters
1. Puncture used oil filters on the closed end of the filter and allow to drain for 24 hours
before recycling or discarding
2. Document approval from the landfill or recycler before disposal or recycling
3. Maintain recycle and/or disposal records
Universal Waste
EPA developed Universal Waste (UW) regulations, which are less restrictive than Hazardous
Waste regulations, to manage batteries (nickel-cadmium and mercury), mercury containing
lamps and thermostats, and certain pesticides.
1. Label waste with the words "Universal Waste" and the name of the item. The label
can be placed on the outside of the package or on the item itself
2. Keep materials in a secure area protected from rainfall
3. Recycle fluorescent bulbs unless permission is received from the local landfill for
disposal
4. Use fluorescent lamps that are low-mercury. They typically have a green cap on one
end of the tube. These can be discarded into general trash.
5. Place universal waste fluorescent lamps in the original package and mark the
package with the words "Universal Waste Lamps" and the date that the first tube was
placed in the package;
6. Send universal waste lamps to be recycled every 11 months to keep from violating
storage time provisions
7. Maintain manifests/bill of lading for three years
8. Document shipments - include the name and address, the name and address of the
destination facility, quantity of each type of UW, and the date shipped and received
9. Inform employees who handle or have responsibility for managing universal waste
on proper handling and emergency procedures appropriate to the type(s) of universal
waste handled
Best Management Practices Page 11 of 14

Absorbent Materials
Generally, absorbent materials such as dry sweep, floor dry, absorbent pads, etc., used to clean
up small spills may be disposed of in Subtitle D Landfills if certain conditions are met. Subtitle D
Landfills are required to prohibit disposal hazardous waste and materials that have free liquids.
Contact the local landfill to receive permission to dispose of incidental quantities of absorbent
materials.
1. Disposed of absorbent materials used to clean up spills according to instructions
from the local landfill
2. At no time should the absorbent materials be shipped off-site if oil or liquids is
leaking from the material
3. Mark containers used to store contaminated absorbent materials with the words
"Used Absorbent Material"
4. Contact local landfill for permission to dispose of contaminated materials
5. Maintain disposal permission information
Erosion and Sediment Controls
To prevent sedimentation from reaching surface waters, erosion and sediment controls must be
used wherever land is disturbed. These controls may include fabric silt fences, hay bales,
sediment retention ponds, check dams or earthen dikes, and vegetation buffers.
1. Use proper erosion and sediment controls
2. Inspect erosion and sediment controls after significant rain events and repair as
required
3. Seed or sod disturbed areas as quickly as possible.
Best Management Practices Page 12 of 14

Site Specific BMPs
1. Install inlet BMPs such as silt bags in all drop inlets discharging to stormwater discharge
points #1 & #2. A SOP for maintenance and replacement should be developed.
2. Site specific BMP for reclaimed water, such as bioretention or grassed swale, should be
implemented.
3. Investigate possibility, long term, of roof drains from all buildings being redirected into a
stormwater control structure. Buildings along the outer perimeter of the site, should be
modified such that sheet flow is accomplished and no erosion occurs and the flow is
directed toward a stormwater control structure.
4. In the event of any visual petroleum discharge, all soil and stone areas that indicate
signs of oil or petroleum based products should be remediated by removing the soil and
stone that can be visibly seen. Then the soil should be tested by a professional with a
meter to determine if additional soil should be removed. Based on the recommendation
of the professional, the soil should be remediated.
5. Provide total containment for contents in Salt Shed Building # 1000. This building should
be repaired immediately in order to contain any pollution from salt runoff.
6. Provide secondary containment for all oil dispensers in Shelter# 1100. The soil in the
vicinity of this building should be tested for contamination and remediated based on the
results of soils test.
7. Develop SOP for all dispensing of oils on-site. Dispensing includes the transferring of oil
from a 55 gallon drum to a smaller container such as a 1 gallon jug. No dispensing
should occur outside of a building.
8. All areas inside and outside with a total combined storage of 60 gallons or larger should
have secondary containment.
9. Any areas with containers of hazardous materials which are less than 55 gallons should
have containment such as a spill containment pallet.
10. All used and new vehicle parts that are not installed that have been exposed to any type
of oil, grease, fuel, or road grime should be placed in an enclosed building.
11. All fluorescent bulbs should be stored inside in a dry location away from normal day to
day human activity and should be recycled within 11 months to keep from violating
storage time provisions.
12. In addition to a spill kit, drain inlet protection devices should be placed at the fueling
facility to be used in the event of a spill. These inlet protection devices should be clearly
Best Management Practices Page 13 of 14

marked as well as the drain inlets. Sign and map should be placed at emergency shut
off.
13. Rinsing of containers should be completed in an appropriate manner, washing across
the driveway/parking lot is not an acceptable manner. Discharge from washing or rinsing
containers should be directed to appropriate containers or sanitary discharge.
14. All vehicle washing should be performed in the Car Wash facility adjacent to the
Maintenance Shop (300).
15. All items acceptable to be discharged in the dumpster, should be completely placed in
the dumpster with no materials "hanging out" from the dumpster.
16. No transformer with PCBs should be stored on-site.
17. All transformer oil containers that are not transformers should have secondary
containment.
18. In areas such as along US HWY 301 that store loose soil, screening, and stone
materials should be protected by a silt fence with silt fence outlets or with super silt
fence.
19. Used Vehicles under repair should be monitored for leaks daily.
Best Management Practices Page 14 of 14

VI. Inspection Checklists

General Site Conditions
Briefly describe the frequency of inspections, i.e., weekly, monthly, quarterly, annually. Visual
inspections of the facility shall be done daily and written inspections weekly.
Inspection Record
Date:
Time of inspection:
Inspector's Name:
Signature:
Checklist
❑ Yes ❑ No Does the facility conduct any activities outside where chemicals could be
exposed to stormwater runoff?
❑ Yes ❑ No Does the facility store material handling equipment, industrial machinery and/or
equipment and vehicles stored outside?
❑ Yes ❑ No Are there any signs of residual or past spills and leaks?
❑ Yes ❑ No Are spill kits, MSDS, and PPE accessible to employees responding to minor
spills?
❑ Yes Cl No Do employees know where the drains discharge?
❑ Yes ❑ No Are stormwater inlets and outlets clearly identified and accessible?
❑ Yes ❑ No Are catch basins and inlets in good condition and free of trash and debris,
floatables, pollutants, oil and grease and are free of any signs of past spills,
releases, or illicit discharges?
❑ Yes ❑ No Is the facility free of any particulate matter or visible deposits of residuals from
roof stacks and/or vents?
U Yes ❑ No Are loading/unloading areas designed to minimize storm water run-on?
❑ Yes U No Are materials protected from rainfall, run-on and run-off?
Corrective Action Taken
Briefly describe any corrective action taken.
Date the Corrective Action Completed:
Photos
❑ Yes U No Were photos taken before and after corrective action for training purposes?
Inspection Checklists Page 1 of 5

Stormwater Control Device
Description
Identify the structural stormwater control device and the frequency of inspections, i.e., weekly,
monthly, quarterly, annually.' For example. The Wet Detention Basin is inspected on a
quarterly basis and after significant rain events.
Inspection Record
Date:
Time of inspection:
Inspector's Name:
Signature:
Checklist'
❑ Yes ❑ No Are structural stormwater control devices accessible?
❑ Yes ❑ No Are structural stormwater control devices free of debris, oil and grease?
❑ Yes ❑ No Is the perimeter free of any bare soil, erosion, or gullies?
❑ Yes ❑ No Are inlet/outlet pipes and/or devices clear and undamaged?
❑ Yes ❑ No Are embankments free of unplanted shrubs or trees?
❑ Yes ❑ No Are embankments in good condition?
❑ Yes ❑ No Is grass cover healthy?
❑ Yes ❑ No Are forebay areas in good condition?
❑ Yes ❑ No Is rip rap displaced?
❑ Yes ❑ No Are weeds or noxious plants present?
❑ Yes ❑ No Are storm water management devices maintained and functioning properly?
Corrective Action Taken
Briefly describe any corrective action taken.
Date the Corrective Action Completed:
Photos
❑ Yes ❑ No Were photos taken before and after corrective action for training purposes?
The DWQ BMP manual has specific things to inspect for depending on the type of BMP as well
as recommendations for the frequency of inspections.
Inspection Checklists Page 2 of 5

Oil Water Separator (OWS)
Inspection Record
Date:
Time of inspection:
Inspector's Name:
Signature:
Checklist
❑ Yes ❑ No Is the OWS accessible?
❑ Yes ❑ No Is the area free of signs of overflow?
❑ Yes ❑ No Are all drains in the OWS free flowing with no water back-up?
❑ Yes ❑ No Are all drains free from obstruction?
❑ Yes ❑ No Is the discharge free of visible signs of oil or debris?
❑ Yes ❑ No Has the facility posted appropriate warnings about the proper use of the OWS?
Corrective Action Taken
Briefly describe any corrective action taken.
Date the Corrective Action Completed:
Photos
❑ Yes ❑ No Were photos taken before and after corrective action for training purposes?
Inspection Checklists Page 3 of 5

Tanks and Containers
Briefly describe the frequency of inspections, i.e., weekly, monthly, quarterly, annually. Visual
inspections of tank and containers shall be done daily and written inspections weekly.
Inspection Record
Date:
Time of inspection:
Inspector's Name:
Signature:
Checklist
❑ Yes ❑ No Are any materials or products stored outside in tanks and/or containers?
❑ Yes ❑ No Are any waste material stored outside?
❑ Yes ❑ No Are any empty containers stored outside?
❑ Yes ❑ No Is secondary containment provided for tanks and containers?
❑ Yes ❑ No Is secondary containment free of accumulated water?
❑ Yes ❑ No Is secondary containment free of any debris, cracks, holes, or evidence of
leaks?
❑ Yes ❑ No Are secondary containment drain valves maintained in the closed position
unless the facility is draining the secondary containment?
❑ Yes ❑ No Are drain logs being maintained?
❑ Yes ❑ No Are tanks in good condition and properly marked?
❑ Yes ❑ No Are tanks and piping free of rust, pits or deterioration or evidence of leaks?
❑ Yes ❑ No Are tank supports free of rust, damage, or deterioration?
❑ Yes ❑ No Are all containers in good condition and properly stored, labeled, and closed?
❑ Yes ❑ No Are the tank and container storage areas in good condition?
Corrective Action Taken
Briefly describe any corrective action taken.
Date the Corrective Action Completed:
Photos
❑ Yes ❑ No Were photos taken before and after corrective action for training purposes?
Inspection Checklists Page 4 of 5

Solid Waste Containers
Briefly describe the frequency of inspections, i.e., weekly, monthly, quarterly, annually. Visual
inspections of solid waste containers shall be done daily and written inspections weekly.
Inspection Record
Date:
Time of inspection:
Inspector's Name:
Signature:
Checklist
❑ Yes ❑ No Are solid waste containers in good condition and of sufficient size to contain all
materials
❑ Yes ❑ No Do solid waste containers have lids and are they free of recyclable materials,
hazardous materials, tires, liquids, and any leak?
❑ Yes ❑ No Are solid waste containers labeled "Prohibited - No Hazardous Waste, No
Recyclable Materials, No Liquids?"
Corrective Action Taken
Briefly describe any corrective action taken.
Inspection Checklists Page 5 of 5

VII . Stormwater Discharge
Outfall Monitoring

VII. Stormwater Discharge Outfall (SDO) Monitoring
Wet weather stormwater discharge qualitative monitoring (visual observations) will be performed
at each designated outfall point as identified in the table below. NCDENR requires qualitative
monitoring to be performed twice per year, once in the spring (April - June) and once in the fall
(September— November), at each stormwater outfall regardless of representative outfall status.
Qualitative monitoring does not need to be performed during a representative storm event. The
below table indicates the parameters for which discharges from each outfalls will be observed.
Stormwater Discharge Point#1
Outfall Type: One 18" RCP
Northing: 724465.04
Easting: 2330529.13
Drainage Area: Includes Offsite
Impervious Area: N/A
Invert Elevation: 100.46'
Stormwater Discharge Point#2
Outfall Type: One 15" RCP
Northing: 724350.17
Easting: 2330323.07
Drainage Area: Includes Onsite
Impervious Area: N/A
Invert Elevation: 93.50'
Stormwater Discharge Point #3
Outfall Type: One 30" RCP
Northing: 723662.27
Easting: 2330748.58
Drainage Area: 7.9 Acres
Impervious Area: 6.4 Acres
% Impervious: 81%
Invert Elevation: 88.39'
SDO Monitoring Page 1 of 5

Stormwater Discharge Point #4
Outfall Type: One 36" RCP
Northing: 723310.04
Easting: 2331067.96
Drainage Area: 13.2 Acres
Impervious Area: 10.1 Acres
% Impervious: 77%
Invert Elevation: 86.75'
Visual Monitoring Parameters
DISCHARGE CHARACTERISTICS FREQUENCY LOCATION*
COLOR SEMI-ANNUAL SDO-1,2,3,4, Pipe Invs*
ODOR SEMI-ANNUAL SDO-1,2,3,4, Pipe Invs*
CLARITY SEMI-ANNUAL SDO-1,2,3,4, Pipe Invs*
FOAM SEMI-ANNUAL SDO-1,2,3,4, Pipe Invs*
OIL SHEEN SEMI-ANNUAL SDO-1,2,3,4, Pipe Invs*
FLOATING SOLIDS SEMI-ANNUAL SDO-1,2,3,4, Pipe Invs*
SUPENDED SOLIDS SEMI-ANNUAL SDO-1,2,3,4, Pipe Ines*
OTHER INDICATORS SEMI-ANNUAL SDO-1,2,3,4, Pipe Invs*
*Pipe inverts and concentrated flows in the vicinity of the Street Division Storage 900 & 1100,
Salt Shed, & City Maintenance Shop.
Visual monitoring is conducted for the purpose of evaluating the effectiveness of the SWPPP
and assessing new sources of stormwater pollution. A blank Stormwater Discharge Outfall
Qualitative Monitoring Report is provided in Appendix B. Completed originals of the form will be
kept on-site with the SWPPP document for at least five (5) years.
Adverse weather conditions, which may prohibit visual monitoring of stormwater discharge
outfalls, include weather conditions that create dangerous conditions for personnel (e.g., local
flooding, high winds, hurricanes, tornadoes, electrical storms). When conducting visual
monitoring of outfalls, personnel are required to follow standard safety practices, including
wearing safety vests and steel-toed boots.
SDO Monitoring Page 2 of 5

If the storm event monitored and reported in accordance with NPDES requirements coincides
with a non-stormwater discharge, the Facility shall separately monitor and report the parameters
as required under the non-stormwater discharge requirements and provide information with the
Non-Stormwater Discharge Visual Observation (Appendix B).
When conducting wet weather visual monitoring at outfalls that receive off-site runoff, the effects
of this off-site runoff can be minimized by conducting the wet weather visual observation within
the first ten minutes of discharge from the on-site outfall.
If stormwater discharges are determined to be polluted, the source of the pollutants will be
located and minimized to the extent practical. No existing analytical stormwater discharge
sampling data is available at this Facility.
Analytical monitoring of stormwater discharges as specified in the below table are required for
this facility
Analytical Monitoring Parameters
Discharge Units Monitoring Sample Sample
Characteristics Frequency' Type Location
pH standard Annually Grab SDO-1,2,3,4,
Pipe Invs*
Non-Polar Oil & mg/I Annually Grab SDO-1,2,3,4,
Grease/TPH EPA Pipe Invs*
Method 1664 9SGT-
HEM)
Total Suspended mg/I Annually Grab SDO-1,2,3,4,
Solids Pipe Invs*
New Motor Oil Usage gallons/month Annually Estimate N/A
Total Rainfall Inches Annually Rain Gauge N/A
'Measurement Frequency: Once per year during a representative storm event. A year is defined
as the 12 month period beginning on the month and day of issuance of the Certificate of
Coverage.
SDO Monitoring Page 3 of 5

*Pipe inverts and concentrated flows in the vicinity of the Street Division Storage 900 & 1100,
Salt Shed, & City Maintenance Shop.
Sample Collection must begin within the first 30 minutes of discharge and continue to all outfalls
until completed. All analytical monitoring shall be performed during a measureable storm event
at each stormwater discharge outfall. (SDO)
Benchmark Values for Analytical Monitoring Requirements
Discharge Characteristics Benchmark Value
pH1 6-9 standard units'
Non-Polar Oil & Grease / TPH EPA 15 mg/I
Method 1664 9SGT-HEM)
Total Suspended Solids 100 mg/I
' If pH values outside this range are recorded in sampled stormwater discharges, but ambient
precipitation pH levels are lower, then the lower threshold of this benchmark range is the pH of
the precipitation (within instrument accuracy) instead of 6 S.U. Readings from an on-site or local
rain gauge (or local precipitation data) must be documented to demonstrate background
concentrations were below the benchmark pH range of 6-9..
The team leaser shall compare monitoring results to the benchmark values table. Exceedances
of benchmark values require the team leader to increase monitoring, increase management
actions, increase record keeping, and/or install stormwater Best Management Practices (BMPs).
These activities will be required until the results are within the benchmark values.
All analytical monitoring must be performed during a representative storm event, which is a
storm event that measures greater than 0.1 inches of rainfall and that is preceded by at least 72
hours in which no storm event measuring greater than 0.1 inches has occurred. A single storm
event may contain up to 10 consecutive hours of no precipitation.
Non-Stormwater discharges dry weather inspections will be performed on an annual basis
between July 1 and September 30. The inspection should be completed following at least 7
days of dry weather. The objective of these observations is to determine if unauthorized non-
stormwater discharges to the stormwater drainage system are occurring. These illicit flows are
SDO Monitoring Page 4 of 5

much more difficult to detect during periods with stormwater flows; therefore, it is important to
make these observations during a very dry period.
The term "stormwater conveyance system" includes all catch basins, drop inlets and similar
structures, pipes, ditches, channels, swales, and canals that discharge to "waters of the State."
The only non-stormwater discharges that shall be allowed in the stormwater conveyance system
are:
1. Uncontaminated ground water, foundation drains, air conditioner condensate without
added chemicals, springs, discharges of uncontaminated potable water, waterline and
fire hydrant flushing, water from footing drains, flows from riparian habitats, and
wetlands.
2. Discharges resulting from fire-fighting or fire-fighting training.
Examples of non-stormwater discharges that are not allowed stormwater conveyance system
are:
1. Vehicle and equipment wash water.
2. Discharges of wash water from steam cleaning, parts washers, and other equipment
cleaning operations.
Non-stormwater investigations shall determine that the discharges from each outfall are
composed only of stormwater or a permitted discharge and should complete the Annual Non-
Stormwater Discharge Dry Weather Assessment form. If a flow is present, then the inspector
must determine whether or not it is a result of non-stormwater discharges. If a flow is present
and believed to be a non-stormwater discharge, then corrective action should be identified and
completed. Upon the discovery of a non-permitted discharge, the Team Leader/ Stormwater
Environmental Specialists should be contacted.
SDO Monitoring Page 5 of 5

VIII . Staff Training

VIII. Staff Training
Personnel training is essential to the effective performance of the SWPPP. Personnel at all
levels of responsibility will be trained in the components and goals of the NPDES program and
the SWPPP. The Responsible Official, Team Leader and all team leaders should be trained
and current on all aspects of the SWPPP. All current/new employees that become part of these
groups should be trained as such within 30 calendar days of joining this group.
Personnel will be trained in:
1. The physical location of all storm drain inlets at the facility.
2. The physical location of all storm drain outfall locations.
3. The location and proper use of spill kits.
4. Identifying and managing potential spills that can occur from equipment and containers
of petroleum and hazardous substances;
5. Recognize toxic and hazardous substances located on-site; and
6. Prevent, or minimize to the extent practical, stormwater pollution at the Facility.
7. Proper and safe spilled material cleanup;
8. Securing drums and containers;
9. Checking for leaks and spills;
10. Proper handling and storage of hazardous substances;
11. Identification of toxic and hazardous substances and wastes stored, handled, used, and
produced on-site;
12. Preventative maintenance of equipment and stormwater controls;
13. Preventing exposure of petroleum-based fuels, oils, and lubricants (POLs), hazardous
substances, and waste materials to stormwater; and
14. Spill prevention and response.
At a minimum, training will be provided on an annual basis. Personnel refresher training will be
held on an annual basis. Personnel training will be documented and new personnel will receive
training promptly upon assignment. A blank Training Documentation Sheet (Appendix B) is
provided in Appendix C. Completed copies of the form will be kept on-site with the SWPPP
Staff Training Page 1 of 2

document for at least five (5) years. The Stormwater Environmental Specialist will develop a
schedule and coordinate training for all employees in the elements of the SWPPP.
Staff Training Page 2 of 2

IX. Supporting Documents

APPENDIX A
COMPLETED INSPECTION CHECKLISTS/FORMS

APPENDIX B
INSPECTION CHECKLISTS/FORMS/TRAINING DOCUMENTS

Adem
NCDENR
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form,please visit: http://portal.ncdenr.org/web/wq/ws/su/npdessw#tab-4
Permit No.: N/C/ / / / / / / / or Certificate of Coverage No.: N/C/G/ / / / / / /
Facility Name:
County: Phone No.
Inspector:
Date of Inspection:
Time of Inspection:
Total Event Precipitation (inches):
Was this a"Representative Storm Event" or"Measureable Storm Event"as defined by the permit?
(See information below.)
❑ Yes n No
Please verify whether Qualitative Monitoring must be performed during a "representative storm
event"or"measureable storm event"(requirements vary, depending on the permit).
Qualitative monitoring requirements vary. Most permits require qualitative monitoring to be
performed during a"representative storm event" or during a"measureable storm event." However,
some permits do not have this requirement. Please refer to these definitions, if applicable.
A"representative storm event"is a storm event that measures greater than 0.1 inches of rainfall
and that is preceded by at least 72 hours (3 days) in which no storm event measuring greater than
0.1 inches has occurred. A single storm event may contain up to 10 consecutive hours of no
precipitation.
A"measurable storm event"is a storm event that results in an actual discharge from the
permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval is representative for local storm events during the sampling period, and the permittee
obtains approval from the local DWQ Regional Office.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
Page 1 of 2
SWU-242,Last modified 10/25/2012

1. Outfall Description:
Outfall No. Structure (pipe,ditch, etc.)
Receiving Stream:
Describe the industrial activities that occur within the outfall drainage area:
2. Color: Describe the color of the discharge using basic colors (red,brown,blue, etc.) and tint
(light,medium,dark) as descriptors:
3. Odor: Describe any distinct odors that the discharge may have (i.e.,smells strongly of oil,
weak chlorine odor, etc.):
4. Clarity: Choose the number which best describes the clarity of the discharge,where 1 is
clear and 5 is very cloudy:
1 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in
the stormwater discharge,where 1 is no solids and 5 is the surface covered with floating solids:
1 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended
solids in the stormwater discharge,where 1 is no solids and 5 is extremely muddy:
1 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
Note: Low clarity,high solids,and/or the presence of foam,oil sheen,or erosion/deposition
may be indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242,Last modified 10/25/2012

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCGO80000
Date submitted
CERTIFICATE OF COVERAGE NO. NCGO8 SAMPLE COLLECTION YEAR _
FACILITY NAME SAMPLE PERIOD Jan-June July-Dec
COUNTY — — or Monthly' (month)
PERSON COLLECTING SAMPLES DISCHARGING TO CLASS ORW I 1HQW nTrout IPNA
LABORATORY Lab Cert.#_ I Zero-flow Water Supply SA
Comments on sample collection or analysis: Other_
PLEASE REMEMBER TO SIGN ON THE REVERSE
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?__yes __no
(if yes, report your analytical results in the table immediately below)
Part A:Vehicle Maintenance Areas Monitoring Requirements (If applicable) No discharge this period'
Outfall Date 00530 00400 00556
No. Sample Collected, Total Suspended pH, Non-Polar Oil and Grease/TPH EPA New Motor Oil Usage,
mo/dd/yr Solids, mg/L Standard units Method 1664 (SGT-HEM), mg/L Annual average gal/mo
Benchmark - 50 or 100 see permit Within 6.0—9.0 15 -
Part B: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfall Date 00556 00530 00400
No. Sample Collected, Non-Polar Oil and Grease/TPH EPA Method Total Suspended Solids, pH,
mo/dd/yr 1664(SGT-HEM), mg/L mg/L Standard units
Permit Limit - 15 50 or 100 see permit 6.0—9.0
For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April 11,2013
Page 1 of 2

STORM EVENT CHARACTERISTICS:
Date (first event sampled)
Total Event Precipitation (inches):
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches):
Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text.
FOR PART A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES ❑ NO
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO Ell
REGIONAL OFFICE CONTACT NAME:
Mail an original and one copy of this DMR, including all"No Discharge"reports, within 30 days of receipt of the lab results(or at end of monitoring period in
the case of"No Discharge"reports) to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"1 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 fines and imprisonment for knowing violations."
(Signature of Permittee) (Date)
Additional copies of this form may be downloaded at: http://portal.ncdenr.org/web/wq/ws/su/npdessw#tab-4
SWU-250 last revised April 11,2013
Page 2 of 2

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report Supplement SWU-242A:
Guidance for Rating Stormwater Discharge
This supplement is intended only as a guide for rating visually observed parameters on a scale of
1-5. The inspector should use best professional judgment when characterizing the quality of
stormwater discharge. Also, the pictures included here do not necessarily show stormwater
discharges but serve to illustrate the characteristics described.
Clarity
(1 is clear, and 5 is very opaque or cloudy)
... 4.jt,'—':- __._ , _ ,67,;.IPS::-;arow..;:"—"*--"".:i•.' 'AI AP" ...IN,"- ,7.---
j Y.d. ` i ,,l • -. - Y:
1 3 5
so r i.
Floating Solids
(1 is no solids, and 5 is the surface covered , - ' T. , ,��•a . ',,
with floating solids or significant trash/debris) -,-- �% } ,,„
.In-
. -• A
,..-....• lir
— -
�Y s
:i' f 1. t j' -� ✓4 - r... ,.. i 1 ,* ti
, , --, ° lip. _ Y:.g t-r f
S t ill Illr i .,- . tic
1 3 5
Page 1 of 10
SWU-242A-061808

Suspended Solids
(1 is no solids,and 5 is extremely muddy or clouded with other particles)
E 0 : d, -. ,. •�,
•
t ,�.
.
e -
•, ems"
4 - ,
P
1 3 5
Tannic Water
Water naturally high in tannins in the eastern part of North Carolina may still have low amounts
of suspended solids and high clarity but not appear"clear"because of coloration. The examples
below will help rate discharges that must be observed in tannic waters.
Clear tannic water may look like tea or coffee,but waters that look more "milky"or like
"chocolate milk"have less clarity and higher suspended solids.
Suspended Solids/Clarity in waterbodies naturally high in tannins
, 91-
iV *.
grilit
s
cx .t
' • v ., �,
A •
1 / 1 3 / 3 5 / 5
Page 2 of 10
SW U-242A-061808

Example 1
y= f s;. ;;'
,yam
r /i - * e '
t'7
^
41 -;,,A,-b -'� s`f_ \ C E� ^1e � .0. i
:sp � ,
�s ��`a a °"! �� �� � (- ;,, A e , F ' - �,�' .
\ v
s.
_
t a }
,E f ,,. i
.„. .. f•
/„ ..L.,,,,,„,„,.,..... _ ....._
,„.
,,
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1. Outfall Description: Example 1 of 4
Outfall No. 001 Structure(pipe, ditch, etc.) Pipe
Receiving Stream:
Describe the industrial activities that occur within the outfall drainage area:
2. Color: Describe the color of the discharge using basic colors(red,brown,blue,etc.) and tint
(light, medium,dark) as descriptors: light brown
3. Odor: Describe any distinct odors that the discharge may have(i.e., smells strongly of oil, weak
chlorine odor,etc.): none
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
1 ill 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
1 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge,where 1 is no solids and 5 is extremely muddy:
1 2 410 4 5
Page 3 of 10
SWU-242A-061808

Example 1 of 4,cont.
4
Possibly small amount of
7. Is there any foam in the stormwater discharge? 11)
No foam near pipe outlet.
8. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? 111110 No Deposition of sand to the
right of pipe outlet.
10. Other Obvious Indicators of Stormwater Pollution:
List and describe N/A
Page 4 of 10
S W U-242A-061808

Example 2
•,
•
, 'S..
i ,gyp rr.� � ��E`a `'�� R `�
'.r • ,`y •y `
1. Outfall Description: Example 2 of 4
Outfall No. 001 Structure(pipe, ditch, etc.) Ditch
Receiving Stream:
Describe the industrial activities that occur within the outfall drainage area:
2. Color: Describe the color of the discharge using basic colors (red,brown,blue,etc.) and tint
(light, medium, dark) as descriptors: medium gray-green
3. Odor: Describe any distinct odors that the discharge may have(i.e., smells strongly of oil, weak
chlorine odor, etc.): none
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy: 1 © 3 4 5 Note in lower right corner of picture,leaf
shadow is visible on the bottom of outlet.
Clarity decreases beyond outlet.
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
1 0 3 4 5 Floating solids observed here are mostly
tree debris that fell in after discharge.
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge,where 1 is no solids and 5 is extremely muddy:
Solids have settled out near outfall and are
1 © 3 4 5 more"dissolved"out in the water near the
top of the picture(where water appears
more gray). At the outlet,there are not any
swirls,clouds,or suspended particles.
Page 5 of 10
SWU-242A-061808

Example 2 of 4,cont.
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? . No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe Some displacement of gravel and sediment observed at the outfall. Also, lots of solids
that have settled. The water becomes more turbid/cloudy beyond the outfall(i.e.,clarity decreases).
Evidence of excessive solids being carried into receiving water.
This example illustrates how additional information in number 10. can be
important to characterizing stormwater discharge impacts.
Page 6 of 10
S WU-242A-061808

Example 3
f
r
0.
• - 1.
h , id ,,
1. Outfall Description: Example 3 of 4
Outfall No. 001 Structure(pipe,ditch,etc.) Pipe
Receiving Stream:
Describe the industrial activities that occur within the outfall drainage area:
2. Color: Describe the color of the discharge using basic colors(red,brown,blue,etc.) and tint
(light,medium,dark)as descriptors: medium brown/tan
3. Odor: Describe any distinct odors that the discharge may have(i.e., smells strongly of oil,weak
chlorine odor,etc.): oily smell
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
1 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
1 2 3 4 5 Rating based on amount of scum/oil
covering surface,not tree debris.
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge,where 1 is no solids and 5 is extremely muddy:
1 2 © 4 5
Page 7 of 10
SWU-242A-061808

Example 3 of 4,cont.
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? 411) No
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe Oil and scummy substance floating on top. Dead duck found.
Page 8 of 10
SWU-242A-061808

Example 4
l fi
. \ i - i 1:51:' . ,„).
40e...,_
1. Outfall Description: Example 4 of 4
Outfall No. 001 Structure(pipe,ditch,etc.) Pipe
Receiving Stream:
Describe the industrial activities that occur within the outfall drainage area:
2. Color: Describe the color of the discharge using basic colors(red,brown,blue,etc.)and tint
(light, medium,dark)as descriptors: clear
3. Odor: Describe any distinct odors that the discharge may have(i.e., smells strongly of oil, weak
chlorine odor,etc.): none
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
O 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
111111 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge,where 1 is no solids and 5 is extremely muddy:
40 2 3 4 5
Page 9 of 10
SWU-242A-061808

Example 4 of 4,cont.
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe N/A
Page 10 of 10
S WU-242A-061808

Charles W. Pittman Ill Operations Center
Storm Water Pollution Prevention Training
Class Name:
Instructor's Name: Date:
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title
Employee's Name Employee's Signature Dept./Title

North Carolina Hazardous Materials
Regional Response Team Primary Response Area Boundaries
RRT-1
RRT-5 RRT-4 Williamstor
Greensboro Raleigh, NC 800-545-7781 (S
336-373-2222 (911 Center) 919-829-1911 (911 Center) 252-792-3521 (S
RRT-6
Asheville Aloe;ny - i n n�knr� ( y,
828-444-2894(On-Call Pager) khb &ITO shim ircairgian T43431 Par= 'Arm _ ) tark
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Charlotte ' Dui.
704.336-2441 (911 Center) RRT-3 I"i" • '
Fayetteville '' " Now
910-433-1731 (Station 1
910-433-1911 (Dispatch) irrr. .,,,:
4_,
C• IIrtiw RRT-2
5,,,;,,tl pta" Wilmington
910-341-4254(911 Gen'
LEGEND
RRT Base Station Locetions
Q riliT Reyori E<iividery
Alsihi3 WI thin RRT Regions
2
- a 0 50 100 150 Miles
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APPENDIX C
ACRONYMS/DEFINITIONS

ACRONYMS
The following is a list of acronyms and abbreviations that may be used in reference to the City of
Wilson's Stormwater Pollution Prevention Program.
AST Aboveground Storage Tank
BMP Best Management Practice
CERCLA Comprehensive Environmental Response, Compensation, and Liability
Act of 1980 as amended
CFR Code of Federal Regulation
CWA Clean Water Act
DWQ Division of Water Quality
EMC Environmental Management Commission
EPA Environmental Protection Agency
EPCRA Emergency Planning and Community Right-to-Know Act
FWPCA Federal Water Pollution Control Act
GIS Geographic Information System
HAZCOM OSHA 1910.120 Hazard Communication
HAZMAT Hazardous Material
MG Million Gallons
MSDS Material Safety Data Sheet
MSL Mean Sea Level
NCDENR North Carolina Department of Environment and Natural Resources
NFPA National Fire Protection Association
NOI Notice of Intent
NPDES Nation Pollutant Discharge Elimination System
OSHA Occupational Safety and Health Administration
OWS Oil/Water Separator
POL Petroleum-based fuels, Oils and Lubricants
RCRA Resource Conservation and Recovery Act
RQ Reportable Quality
SARA Superfund Amendments and Reauthorization Act
SI Stormwater Inlet
SDO Stormwater Discharge Outfall
Acronyms and Definitions Page 1 of 11

SOP Standard Operating Procedure
SPCC Spill Prevention, Control and Countermeasure (Plan)
SPR Spill Prevention and Response (Plan)
SWPPP Stormwater Pollution Prevention Plan
USEPA United States Environmental Protection Agency
UST Undergound Storage Tank
WWTP Waste Water Treatment Plant
Acronyms and Definitions Page 2 of 11

DEFINITIONS
Allowable Non-Stormwater Discharges means non-stormwater discharges, which shall be
allowed in the stormwater conveyance system: They are:
a. All other discharges that are authorized by a non-stormwater NPDES permit;
b. Uncontaminated ground water, foundation drains, air conditioner condensate without
added chemicals, springs, discharges of uncontaminated potable water, waterline
and fire hydrant flushings, water from footing drains, flows from riparian habitats, and
wetlands.
c. Discharges resulting from fire-fighting or fire-fighting training.
Best Management Practices (BMPs) means measures or practices used to prevent or minimize
the amount of pollution entering surface waters. BMPs may take the form of a process, activity,
or physical structure.
Bulk Storage of Liquid Products are liquid raw materials, manufactured products, waste
materials or by-products with a single aboveground storage container having a capacity of
greater than 660 gallons or with multiple aboveground storage containers located in close
proximity to each other having a total combined storage capacity of greater than 1,320 gallons.
Bypass is the known diversion of stormwater from any portion of a stormwater control facility
including the collection system, which is not a designed or established operating mode for the
facility.
Certificate of Coverage means the cover sheet which accompanies the general permit upon
issuance and lists the facility name, location, receiving stream, river basin, effective date of
coverage under the permit and is signed by the Director.
Clean Water Act means the Federal Water Pollution Control Act, also known as the Clean
Water Act (CWA), as amended, 33 USC 1251, et. seq.
Conveyance is any natural or manmade channel or pipe in which concentrated stormwater
flows.
Acronyms and Definitions Page 3 of 11

Discharge is a release or flow of stormwater or other substance from a conveyance or storage
container.
DWQ is the Division of Water Quality, Department of Environment and Natural Resources.
EMC is the North Carolina Environmental Management Commission.
General Permit is a permit issued under the NPDES program to cover a certain class or
category or stormwater discharges. These permits allow for a reduction in the administrative
burden associated with permitting stormwater discharges associated with industrial activities.
Grab Sample means an individual sample collected instantaneously. Grab samples that will be
directly analyzed or qualitatively monitored must be taken within the first 30 minutes of
discharge.
Hazardous Substances are (1) any substances designated under 40 CFR Part 116 pursuant to
Section 311 of the Clean Water Act. (2) any substances that pose a threat to human health
and/or the environment. Hazardous substances can be toxic, corrosive, ignitable, explosive or
chemically reactive.
Hazardous Waste is by-products of human activities that can pose a substantial or potential
hazard to human health or the environment when improperly managed, possesses at least one
of four characteristics (ignitability, corrosivity, reactivity, or toxicity) or appears on special
USEPA lists.
Illicit Connection means any unlawful connection that allows the discharge of non-stormwater to
the stormwater conveyance system or waters of the State in violation of this chapter.
Illicit Discharge Investigation is an evaluation to determine whether or not non-stormwater
discharges are present at a Facility's industrial stormwater discharge outfalls.
Acronyms and Definitions Page 4 of 11

Industrial Activity — the following categories of facilities are considered to be engaging in
"industrial activity":
(1) Facilities subject to stormwater effluent limitations guidelines, new source performance
standards, or toxic pollutant effluent standards under 40 CFR Subchapter N (1998)
(except facilities with toxic pollutant effluent standards which are exempted under category
(10) of this definition;
(2) Facilities classified as Standard Industrial Classification (SIC) 24 (except 2434), 26 (except
265 and 267), 28 (except 283 and 285), 29, 211, 32 (except 323); 33, 3441, and 373
(Office of Management and Budget OMB SIC Manual, 1987);
(3) Facilities classified as SIC 10 through 14 (mineral industry) (OMB SIC Manual, 1987)
including active or inactive mining operations (except for area of coal mining operations no
longer meeting the definition of a reclamation area under 40 CFR Part 434.11(I) (1998)
because the performance bond issued to the facility by the appropriate Surface Mining
Control and Reclamation Act of 1977 (SMCRA) (30 USC 12 et seq.) authority has been
released, or except for area of non-coal mining operation which have been released from
applicable State or Federal reclamation requirements after December 17, 1990) and oil
and gas exploration, production, processing, or treatment operations, or transmission
facilities that discharge stormwater contaminated by contact with or that has come into
contact with any overburden, raw material, intermediate products, finished products,
byproducts or waste products located on the site of such operations; (inactive mining
operations are mining sites that are not being actively mined, but which have an
identifiable owner/operator; inactive mining sites do not include sites where mining claims
are being maintained prior to disturbances associated with the extraction, benefication, or
processing of mined materials, nor sites where minimal activities are undertaken for the
sole purpose of maintaining a mining claim);
(4) Hazardous waste treatment, storage, or disposal facilities, including those that are
operating under interim status or a permit under Subtitle C of the Resource Conservation
and Recovery Act (RCRA) (42 USC 6901 et seq.);
(5) Landfills, land application sites, and open dumps that receive or have received any
industrial wastes (waste that is received from any of the facilities described under this
definition) including those that are subject to regulation under Subtitle D of RCRA;
(6) Facilities involved in the recycling of materials, including metal scrapyards, battery
reclaimers, salvage yards, and automobile junkyards, including but not limited to those
classified as Standard Industrial Classification 5015 and 5093 (OMB SIC Manual, 1987);
(7) Steam electric power generating facilities, including coal handling sites;
Acronyms and Definitions Page 5 of 11

(8) Transportation facilities classified as SIC 40, 41, 42 (except 4221-4225), 43 ,44, 45, and
5171 (OMB SIC Manual, 1987) which have vehicle maintenance shops, equipment
cleaning operations, or airport deicing operations. Only those portions of the facility that
are either involved in vehicle maintenance (including vehicle rehabilitation, mechanical
repairs, painting, fueling, and lubrication), equipment cleaning operation, airport deicing
operation, or which are otherwise identified under subdivisions 1 through 7 or 9 through 10
of this definition are associated with industrial activity;
(9) Treatment works treating domestic sewage or any other sewage sludge or waste water
treatment device or system used in the storage treatment, recycling, and reclamation of
municipal or domestic sewage, including land dedicated to the disposal of sewage sludge
that is located within the confines of the facility, with a design flow of 1.0 MGD or more, or
required to have an approved POTW pretreatment program under Title 40 CFR Part 403,
including lands dedicated to the disposal of sewage sludge that is located within the
confines of the facility.
(10) Facilities under SIC 20, 21, 22, 23, 2434, 25, 265, 27, 283, 285, 30, 31 (except 311), 323,
34 (except 3441), 35, 36, 37 (except 373), 38, 39, 4221-4225 (OMB SIC Manual, 1987),
and which are not otherwise included within subdivisions 2 through 9.
Landfill means a disposal facility or part of a disposal facility where waste is placed in or on land
which is not a land treatment facility, surface impoundment, injection well, a hazardous waste
long-term storage facility or a surface storage facility.
Minor spills are those spills that have a volume less than any reportable quantity, can be
controlled and cleaned up with on-site resources, do not contaminate the environment, and do
not cause injury to personnel.
Municipal Separate Storm Sewer means a stormwater collection system within an incorporated
are of local self-government such as a city or town.
National Pollutant Discharge Elimination System (NPDES) means the Federal Environmental
Protection Agency's (USEPA) national program for issuing, modifying, revoking, and reissuing,
terminating, monitoring, and enforcing water quality permits.
No exposure means all industrial materials or activities are protected by a storm resistant cover
so that they are not exposed to rain, snow, snowmelt, or runoff. Industrial materials or activities
Acronyms and Definitions Page 6 of 11

include, but are not limited to, material handling equipment, industrial machinery, raw materials,
intermediate products, by-products, or waste products, however packaged.
Notice of Intent means the state application from which, when submitted to the Division, officially
indicates the facility's notice of intent to seek coverage under a general permit.
NPDES Permit is an authorization, license, or equivalent control document issued by USEPA or
an approved state agency to implement the requirements of the NPDES program.
Oil Sheen is a thin, glistening layer of oil on water.
Oil/Water Separator is a device installed, usually at the entrance to a drain, which separates
and collects oil and grease from water flows entering the drain.
Outfall is any discernible stormwater conveyance (e.g., pipe, ditch, swale, canal) that discharges
to water of the State or to a separate municipal storm system. See also point source discharge.
Overburden means any material of any nature, consolidated or unconsolidated, that overlies a
mineral deposit, excluding topsoil or similar naturally-occurring surface materials that are not
disturbed by mining operations.
Permit Issuing Authority (or Permitting Authority) is the North Carolina Department of
Environmental and Natural Resources.
Permittee means the owner or operator issued a certificate of coverage pursuant to this general
permit.
Point Source Discharge of Stormwater is any discernible, confined, and discrete conveyance,
including but not limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure,
container, rolling stock, or vessel or other floating craft, from which stormwater is or may be
discharged to waters of the State.
Pollutant is any dredged spoil, solid waste, incinerator residue, filter backwash, sewage,
garbage, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials
(except those regulated under the Atomic Energy Act of 1954, as amended (42 (U.S.C. 2011 et
Acronyms and Definitions Page 7 of 11

seq.)), heat, wrecked or discharged equipment, rock, sand, cellar dirt, and industrial, municipal,
and agricultural waste discharged into water.
Precipitation is any form of rain or snow.
Preventative Maintenance Program is a schedule of inspections and testing at regular intervals
intended to prevent equipment failures and deterioration.
Reportable Quantity (RQ) is the quantity of a hazardous substance or oil that triggers reporting
requirements under CERCLA or the Clean Water Act.
Representative Outfall Status means when it is established that the discharge of stormwater
runoff from a single outfall is representative of the discharges at municipal outfalls, the DWQ
may grant representative outfall status. Representative outfall status allows the permittee to
perform analytical monitoring at a reduced number of outfalls.
Representative Storm Event means a storm event that measures greater than 0.1 inches of
rainfall and that is preceded by at least 72 hours in which no storm event measuring greater
than 0.1 inches has occurred. A single storm event may contain up to 10 consecutive hours of
no precipitation. For example, if it rains for 2 hours without producing any collectable discharge,
and then stops, a sample may be collected if a rain producing a discharge begins again within
the next 10 hours.
Rinse Water Discharge means the discharge of rinse water from equipment cleaning areas
associated with industrial activity. Rinse waters from vehicle and equipment cleaning areas are
process waste waters and do not include washwaters utilizing any type of detergent or cleaning
agent.
Runoff is that part of precipitation, snowmelt, or irrigation water that runs off the land into
streams or other surface water. It can carry pollutants from the air and land into the receiving
waters.
Runoff Coefficient means the fraction of total rainfall that will appear at the conveyance as
runoff.
Secondary Containments are structures, usually dikes or berms, surrounding tanks or other
storage containers and designed to catch spilled material from the storage containers.
Acronyms and Definitions Page 8 of 11

Secondary containment must provide spill containment for the contents of the single largest tank
within the containment structure plus sufficient freeboard to allow for the 10-year, 24-hour storm
event.
Section 313 Water Priority Chemicals means a chemical or chemical categories which:
a. Is listed in 40 CFR 372.65 pursuant to Section 313 of Title III of the Superfund
Amendments and Reauthorization Act (SARA) of 1986, also titled the Emergency
Planning and Community Right-to-Know Act of 1986;
b. Is present at or above threshold levels at a facility subject to SARA title III, Section 313
reporting requirements; and
c. That meet at least one of the following criteria:
(1) Is listed in appendix D of 40 CFR part 122 on either Table II (organic priority
pollutants), Table III (certain metals, cyanides, and phenols) or Table IV (certain
toxic pollutants and hazard substances.
(2) Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the CWA
at 40 CFR 116.4 or;
(3) Is a pollutant for which EPA has published acute or chronic water quality criteria.
Severe Property Damage means substantial physical damage to property, damage to the
control facilities, which causes them to become inoperable, or substantial and permanent loss of
natural resources, which can reasonably be expected to occur in the absence of a bypass.
Severe property damage does not mean economic loss caused by delays in production.
Sheetflow is runoff which flows over the ground surface as a thin, even layer, not concentrated
in a channel.
Significant Materials includes, but is not limited to: raw materials; fuels; materials such as
solvents, detergents, and plastic pellets; finished materials such as metallic products; raw
materials used in food processing or production; hazardous substances designated under
section 101(14) of CERCLA (42 USC 9601 et seq.); any chemical the facility is required to
report pursuant to section 313 of Title III of SARA; fertilizers, pesticides; and waste products
such as ashes, slag and sludge that have the potential to be released with stormwater
discharges.
Acronyms and Definitions Page 9 of 11

Significant Spills includes, but is not limited to: releases of oil or hazardous substances in
excess of reportable quantities under Section 311 of the Clean Water Act (see 40 CFR 110.10
and CFR 117.21) or Section 102 of CERCLA (see 40 CFR 302.4).
Spill Prevention Control and Countermeasures (SPCC) Plan is a plan consisting of structures,
such as curbing, and action plans to prevent and respond to spill of hazardous substances as
defined in the Clean Water Act.
Stormwater means the flow of water, which results from precipitation and which occurs
immediately following rainfall or as a result of snowmelt runoff.
Stormwater Discharge Associated with Industrial Activity means the discharge from any point
source, which is used for collecting and conveying stormwater, and which is directly related to
manufacturing, processing or raw material storage areas at an industrial site. Facilities
considered to be engaged in "industrial activities" include those activities defined in 40 CFR
122.26(b)(14). The term does not include discharges from facilities or activities excluded from
the NPDES program.
Stormwater Pollution Prevention Plan (SWPPP) is the comprehensive site-specific plan which
details measures and practices used to prevent or reduce stormwater pollution and is based on
an evaluation of the pollution potential of the site.
Ten Year Design Storm means the maximum 24 hour precipitation event expected to be
equaled or exceeded on the average once in ten years. Design storm information can be found
in the State of North Carolina Erosion and Sediment Control Planning and Design Manual.
Total Flow means the flow corresponding to the time period over which the entire storm event
occurs. Total flow shall be either; (a) measured continuously, (b) calculated based on the
amount of area draining to the outfall, the amount of built-upon (impervious) area, and the total
amount of rainfall, or (c) estimated by the measurement of flow at 20-minute intervals during the
rainfall event.
Toxic Pollutant means any pollutant listed as toxic under Section 307(a)(I) of the Clean Water
Act.
Acronyms and Definitions Page 10 of 1 1

or is being a di iaF,v .- ' .
the unaided eye.
Waste pile means any non-containerized accumulation of solid, non-flowing waste that is used
for treatment or storage.
Waters of the United States
(a) All waters, which are currently used, were used in the past, or may be susceptible to use
in interstate or foreign commerce, including all waters which are subject to the ebb and
flow of the tide;
(b) All interstate waters, including interstate "wetlands";
(c) All other waters such as intrastate lakes, rivers, streams (including intermittent streams),
mudflats, sandflats, "wetlands," sloughs, prairie potholes, wet meadows play lakes, or
natural ponds, the use, degradation, or destruction of which would affect or could affect
interstate or foreign commerce.
(d) All impoundments of waters otherwise defined as waters of the United States under this
definition;
(e) Tributaries of waters identified in paragraphs (a) through (d) of this definition;
(f) The territorial sea; and
(g) "Wetlands" adjacent to waters (other than waters that are themselves wetlands)
identified in paragraphs (a) through (f) of this definition.
onyms and Definitions Page 11 of 11

eans an exceptional incident in which there is unintentional and temporary
pliance with technology based permit effluent limitations because of factors beyond the
nable control of the permittee. An upset does not include noncompliance to the extent
sed by operational error, improperly designed treatment or control facilities, inadequate
atment or control facilities, lack of preventative maintenance, or careless or improper
operation.
Vehicle Maintenance Activity means vehicle rehabilitation, mechanical repairs, painting, fueling,
lubrication, vehicle cleaning operations, or airport deicing operations.
Visible Sedimentation means solid particulate matter, both mineral and organic, that has been
or is being transported by water, air, gravity, or ice from its site of origin, which can be seen with
the unaided eye.
Waste pile means any non-containerized accumulation of solid, non-flowing waste that is used
for treatment or storage.
Waters of the United States
(a) All waters, which are currently used, were used in the past, or may be susceptible to use
in interstate or foreign commerce, including all waters which are subject to the ebb and
flow of the tide;
(b) All interstate waters, including interstate "wetlands";
(c) All other waters such as intrastate lakes, rivers, streams (including intermittent streams),
mudflats, sandflats, "wetlands," sloughs, prairie potholes, wet meadows play lakes, or
natural ponds, the use, degradation, or destruction of which would affect or could affect
interstate or foreign commerce.
(d) All impoundments of waters otherwise defined as waters of the United States under this
definition;
(e) Tributaries of waters identified in paragraphs (a) through (d) of this definition;
(f) The territorial sea; and
(g) "Wetlands" adjacent to waters (other than waters that are themselves wetlands)
identified in paragraphs (a) through (f) of this definition.
onyms and Definitions Page 11 of 11