17_NCS000250_Orange CMY SPPP and SPCC September 2019

North Carolina
Department of Transportation
Division 7
Orange County Maintenance Yard
Hillsborough, North Carolina
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STORMWATER POLLUTION PREVENTION PLAN
and SPILL PREVENTION, CONTROL, AND
COUNTERMEASURE PLAN
September 2019

TABLE OF CONTENTS
SECTION1......................................................................................................................................
NPDES PERMIT NO. NCS000250 CROSS-REFERENCE TABLE ........................................
1.0 STORMWATER POLLUTION PREVENTION PLAN ................................................
1.1 INTRODUCTION...................................................................................................
1.2 RESPONSIBLE PARTIES.....................................................................................
1.3 PLAN REQUIREMENTS.......................................................................................
1.4 PLAN GUIDANCE.................................................................................................
1.4.1 Record Keeping.........................................................................................
1.4.2 Facility Inspections....................................................................................
1.4.3 Spill Response and Reporting....................................................................
1.4.4 Personnel Training.....................................................................................
1.4.5 Qualitative Monitoring Guidance..............................................................
1.4.6 Non-stormwater Discharges.......................................................................
1.4.7 Releases from Secondary Containment Structures ....................................
1.4.8 Existing Environmental Plans....................................................................
SECTION2......................................................................................................................................
2.0 FACILITY ASSESSMENT AND BMP ACTION PLAN ...............................................
2.1. FACILITY LOCATION.........................................................................................
2.2. FACILITY DESCRIPTION....................................................................................
2.3. FACILITY SECURITY..........................................................................................
2.4. FACILITY DRAINAGE.........................................................................................
2.5 FACILITY SPILL HISTORY.................................................................................
2.6 FACILITY RISK ASSESSMENT..........................................................................
2.6.1. Potential Spill Scenarios............................................................................
2.7 FACILITY BMPS...................................................................................................
SECTION3......................................................................................................................................
3.0 BEST MANAGEMENT PRACTICES.............................................................................
3.1 BMP ASSESSMENT PROCESS............................................................................
3.2 BASELINE BMPS..................................................................................................
3.2.1 Stormwater Pollution Prevention Training ................................................
3.2.2 Good Housekeeping Program....................................................................
3.2.3 Preventative Maintenance Program...........................................................
3.2.4 Spill Prevention..........................................................................................
3.2.5 On -site Contractor Responsibilities...........................................................
3.2.6 Industrial Activity Exposure......................................................................
3.2.7 Daily Observations.....................................................................................
3.2.8 Scrap Material Storage and Salvage..........................................................
3.2.9 HAZMAT Inventory Control.....................................................................
3.2.10 Vegetation Practices...................................................................................
3.2.11. Sediment and Erosion Control...................................................................
3.2.12. Management of Runoff..............................................................................
3.3 SITE -SPECIFIC BMPS..........................................................................................
3.3.1 On -site and Remote Refueling Operations ................................................
3.3.2 Spill Kits....................................................................................................
NCDOT Stormwater Pollution Prevention Plan and Spill Prevention, Control, and Countermeasure Plan

TABLE OF CONTENTS continued
3.3.3
Vehicle and Equipment Cleaning Areas ....................................................
3.3.4
Oil/Water Separators..................................................................................
3.3.5
Secondary Containment.............................................................................
3.3.6
Hazardous Materials Storage and Management ........................................
3.3.7
Hazardous Waste Storage and Management ..............................................
3.3.8
Salt and Sand/Salt Mixture Storage...........................................................
3.3.9
Illicit Connections and Improper Discharges Elimination .........................
3.3.10
Contaminated Soil Removal......................................................................
3.3.11
Underground Storage Tank Evaluation.....................................................
3.4
ADDITIONAL BEST MANAGEMENT PRACTICES .........................................
SECTION4
...................................................................................................................................................
4.0 SPILL PREVENTION, CONTROL, AND COUNTERMEASURE ...........................................
4.1
INTRODUCTION..................................................................................................................
4.1.1
Oil Storage System Description................................................................................
4.1.2
Mobile Containers.....................................................................................................
4.1.3
Containers Not Covered By this Plan........................................................................
4.2
GENERAL PLAN REQUIREMENTS....................................................................................
4.3
CONTAINER AREA SPECIFIC REQUIREMENTS.............................................................
4.3.1
Potential Spill Scenarios............................................................................................
4.3.2
Diversionary Control and Containment.....................................................................
4.3.3
Inspections, Tests, and Record Keeping....................................................................
4.3.4
Personnel Training....................................................................................................
4.3.5
Facility Security........................................................................................................
4.3.6
Rainwater Inspection in Diked Areas........................................................................
4.3.7
Undiked Areas...........................................................................................................
4.3.8
General Product Handling.........................................................................................
4.3.9
Tank and Piping Requirements.................................................................................
TABLES
Table 1-1. State and Federal Spill Response Telephone Numbers ...................................................
Table 1-2. Oil Spill Response, Reporting, and Cleanup...................................................................
Table2-1. Industrial Outfalls............................................................................................................
Table 2-2. Outfall Drainage Characteristics.....................................................................................
Table 4-1. SPCC-Regulated Containers..........................................................................................
Table 4-2. Oil Spill Response, Reporting and Cleanup....................................................................
Table4-3. Tank Inspections..............................................................................................................
FIGURES
Figure 1. Example Organizational Chart..........................................................................................
Figure 2. NCDOT SPPP and SPCC Process Diagram......................................................................
Figure 3. Site Location Map.......................................................................................................website
Figure 4. Facility Site Map.............................................................inside pocket of SPPP/ website
APPENDICES
APPENDIX A ACRONYMS AND DEFINITIONS
APPENDIX B EXCERPTS OF NPDES PERMIT FOR SPPP
APPENDIX C SECONDARY CONTAINMENT GUIDANCE
APPENDIX D LIST OF FORMS
NCDOT Stormwater Pollution Prevention Plan and Spill Prevention, Control, and Countermeasure Plan

SECTION 1
STORMWATER POLLUTION
PREVENTION PLAN
NCDOT Stormwater Pollution Prevention Plan

NPDES PERMIT NO. NCS000250 CROSS-REFERENCE TABLE
NPDES Permit
Description of Section
SPPP Section
Part II -
Section E.Lb
NCDOT shall develop a site specific SPPP...
The SPPP document
Section E.2.a
The Plans shall be considered public information...
1.4.1
Section E.2.b.i
Site Plan
2, Figure 4
Section E.2.b.i(a)
A general location map...
24, Figure 3
Section E.2.b.i(b)
A narrative description...
2.2
Section E.2.b.i(c)
A site map drawn to scale...
2.2, 2.4, Figure 4
Section E.2.b.i(d)
A list of significant spills...
2.5, 2.6.1
Section E.2.b.i(e)
Certification that the stormwater outfalls...
1.3, 1.4.6, Forms 5-6
Section E.2.b.ii
Stormwater Management Plan
2
Section E.2.b.ii(a)
A review of technical and economic feasibility...
1.1
Section E.2.b.ii(b)
A schedule to provide secondary containment...
1.4.7, 3.3.5, Form 18
Section E.2.b.ii(c)
A narrative description... of BMPs...
2.7, 3, website tables
Section E.2.b.ii(d)
Inspection schedules of stormwater conveyances...
Year tabs
Section E.2.b.ii(e)
Vehicle and Equipment Cleaning Areas
3.3.3
Section E.2.b.iii
Spill Prevention and Response Plan
1.4.3, 3.2.4
Section E.2.b.iv
Preventative Maintenance and Good
Housekeeping...
3.2.2 and 3.2.3
Section E.2.b.v
Employee Training
1.4.4, 3.2.1
Section E.2.b.vi
Responsible Party
1.2, Figure 1
Section E.2.b.vii
Plan Amendment
1.4.1, Form 8
Section E.2.b.viii
Facility Inspections
1.4.2, 3.2.7, Form 19
Section E.2.b.ix
Implementation
Year tabs, Form 1, Figure 2
Section E.3.a(ii)
Perform required qualitative monitoring...
1.4.5
Part III -
Section A.2.a
Implementation of SPPP ... shall include
documentation...
1.4.1
Section A.3.a
Qualitative monitoring shall be documented...
1.4.5, Form 17
Section A.4
Training performed in conjunction with the SPPP...
1.4.4
Section A.10.a
The Permittee shall report to the central office...
1.4.1
Section B.La
Existing Industrial Facilities: The required SPPP...
Form 1
NCDOT Stormwater Pollution Prevention Plan

1.0 STORMWATER POLLUTION PREVENTION PLAN
1.1 INTRODUCTION
This document is the Stormwater Pollution Prevention Plan (SPPP) for the North Carolina
Department of Transportation (NCDOT) statewide maintenance yards (hereinafter referred to as the
Facility). This Plan has been prepared to comply with the United States Environmental Protection
Agency (USEPA, hereinafter referred to as EPA) National Pollutant Discharge Elimination System
(NPDES) program under the amended 1987 Federal Water Pollution Control Act and 40 Code of
Federal Regulations (CFR) 112 as amended. This Plan has been developed using information from
the September 1992 edition of Stormwater Management for Industrial Activities: Developing
Pollution Prevention Plans and Best Management Practices. The Plan has been updated using
additional pollution prevention guidance obtained from USEPA. This Plan (1) consists of steps and
activities designed to identify potential sources of stormwater pollution or contamination and
(2) establishes Best Management Practices (BMPs) that will prevent or reduce pollutants in
stormwater runoff. Not all NCDOT Facilities are regulated by 40 CFR 112, hereinafter referred to
at the Spill Prevention Control and Countermeasure (SPCC) regulations. If the Facility's oil storage
capacity totals 1,320 gallons or greater, they will be required to add Section 4 of this Plan, which is
devoted to SPCC compliance. The SPPP website will prompt each Facility to determine whether
they are regulated by the SPCC rules. Note that "the Plan" refers to either the SPPP or the
SPPP/SPCC Plan, depending on the Facility requirements.
The North Carolina Department of Environment Quality (DEQ), has adopted final stormwater
permitting rules for industrial discharges in North Carolina. North Carolina is a delegated NPDES
state with general and individual permitting authority. EPA regulations 40 CFR 122 require certain
industries to apply for an NPDES Permit for stormwater discharges. DEQ issued the original
NPDES Permit No. NCS000250 to NCDOT ("Permittee") effective June 8, 1998. NCDOT
continues to operate under Permit No. NCS000250.
At the Facility level, the Permittee is required to perform certain compliance activities. The
Permittee must characterize and monitor oil -containing tanks, stormwater drainage areas, and
stormwater quality. The Permittee must then implement necessary BMPs that can include
programmatic, operational, and structural practices that eliminate or reduce stormwater pollution.
In general, each Facility and its personnel are required to:
• Establish spill containment procedures, drainage control, and security measures;
• Learn and implement stormwater pollution prevention, and spill prevention and control
procedures and requirements;
• Follow written standard operating procedures for hazardous material handling and
storage;
• Perform routine inspections; and
• Maintain records to document successful completion of Plan requirements.
NCDOT Stormwater Pollution Prevention Plan

In developing a list of appropriate BMPs for a Facility, technical and economic feasibility issues are
a baseline consideration in choosing BMPs that will be performed to achieve permit compliance.
Expensive or unproven technologies are generally dismissed early in the selection process. This
results in a list of practical BMPs that the Facility will complete. Additional BMPs, including
structural controls, will be evaluated during each annual Comprehensive Facility Compliance
Inspection.
The following appendices are included as part of this Plan. Appendix A lists Plan -related acronyms
and definitions. Appendix B provides a copy of the NCDOT NPDES Permit Cover Letter and
excerpts from Part II - Section E and Part III of the Permit. Appendix C provides guidance
information for calculating and designing secondary containment. Appendix D provides a list of
blank forms and checklists to be used in implementing this Plan.
1.2 RESPONSIBLE PARTIES
The Stormwater Pollution Prevention Team (SPPT) consists of Facility supervisors and other
personnel that the Division Engineer or SPPT Leader chooses to appoint. The SPPT will report to
the Division Engineer for funding and managerial support.
The Facility's County Maintenance Engineer will serve as the SPPT Leader. The SPPT will meet at
least once annually to evaluate the effectiveness of the BMPs and determine whether BMPs need to
be added, modified, or deleted at the Facility. The SPPT will be responsible for ensuring that SPCC
Plan requirements are fulfilled, if applicable. A series of forms are provided in this Plan to assist the
team in the evaluation of their assigned areas. Applicable forms must be completed for each
building/area at the Facility. The SPPT is required to make revisions to the Plan where changes to
the Facility significantly affect potential risks to stormwater quality. These revisions will be
documented using Form 8 and will be fully incorporated into the appropriate section(s) of the
Plan at least once annually (during the Comprehensive Facility Compliance Inspection).
The responsibility of the Division Engineer or appointee is to:
• Review and ensure that the SPCC Plan, if the Facility is required to have an SPCC
Plan, is sealed by a Professional Engineer (PE); ;
• Ensure the Plan is implemented;
• Be accountable for discharge prevention;
• Appoint SPPT Leader;
• Review and approve selected BMPs;
• Receive spill reports and non-compliance reports, and forward copies to
Environmental Operations, Roadside Environmental Unit;
• Review and approve Plan revisions and new BMPs identified by SPPT.
The responsibility of the SPPT Leader is to:
• Maintain Plan requirements;
• Select and train SPPT members;
• Schedule and conduct SPPT meetings;
NCDOT Stormwater Pollution Prevention Plan

• Ensure that the SPPT carries out duties listed subsequently; and
• Document the Plan Implementation Schedule (Form 1) on the NCDOT SPPP/SPCC
website at https://apps.dot.state.nc.us/sppp/.
The responsibility of each SPPT member is to:
• Attend SPPT meetings;
• Schedule the actions to be performed for the Plan;
• Conduct monthly and semiannual site inspections;
• Implement best management practices;
• Conduct visual observations at all industrial stormwater discharge outfalls as specified in
the Permit;
• Perform record keeping and documentation as required by the Plan;
• Perform the annual updating and certifications as required by the Plan; and
• Evaluate the adequacy of the Plan and modify as necessary.
An example organizational arrangement of the SPPT at a typical NCDOT County Maintenance
Yard Facility is presented in Figure 1. Each Facility SPPT will include SPPT members specific to
the Facility. The example organization chart shows the chain of command for ensuring
compliance with the Permit. Most of the information provided in this Plan requires effort by the
Facility SPPT and on -site employees. The on -site team members or their designees will assist
the SPPT Leader in regards to those areas under their specific management control. NCDOT
resources like those listed in the Figure 1 example will provide support and technical assistance.
NCDOT Stormwater Pollution Prevention Plan

Figure 1. Example Organizational Chart
(for typical NCDOT County Maintenance Yard)
DIVISION ENGINEER
Stormwater Pollution Prevention Team*
Team Leader
County Maintenance Engineer
Team Members
Equipment Shop Supervisor Bridge Maintenance Supervisor
Traffic Services Supervisor Roadside Environmental Supervisor
Additional Team Member Additional Team Member
Specific to Facility Specific to Facility
*The SPPT will also be responsible for SPCC requirements if the Facility is required to have
Section 4, which is devoted to SPCC compliance.
NCDOT Resources:
Division Maintenance Engineer
Roadside Environmental Unit
Hydraulics Unit
Division Safety Officer
NCDOT Stormwater Pollution Prevention Plan

kin
1.3 PLAN REQUIREMENTS
As part of Plan requirements, the SPPT will complete required tasks in each year of the five-year
permit term. Completion of the tasks will be documented on the appropriate Forms, which are
available on the SPPP website at https://gpps.dot.state.nc.us/ppp/. The Plan Implementation
Schedule for the SPPT Leader is provided on Form 1. The Form provides the SPPT Leader with
a schedule to implement and document the required tasks for each year. Figure 2 is a pictorial
representation of the Plan Implementation Schedule.
The Forms are provided for the SPPT to implement and document completion of each task. The
SPPT Leader will insert completed Forms and records into the appropriate year tab.
Alternatively, the SPPT Leader can document completion of certain tasks on the SPPP website.
Form 1 identifies the tasks to be performed and the method of documentation to be used for each
task. Target dates indicated in the plan implementation schedule are the dates that task
implementation should begin, not necessarily the date that a task is completed. When tasks are
completed, the SPPT Leader will enter the completion date on the appropriate plan
implementation schedule for each year.
Form 2 will be completed each year to designate the Facility SPPT members for that year.
Form 3 will be used each year to document SPPP-related training at the Facility. Forms 4 and 5
will be completed each year during the annual Comprehensive Facility Compliance Inspection
(second semiannual site inspection). Form 6 will be completed and certified each year as part of
the non-stormwater discharge investigation component. Form 7 will be used each year to
document the completion of intermediate and annual reviews by the SPPT Leader and SPPT
members. Form 8 will be used each year to document amendments to the Plan. Form 9 will be
completed for each significant spill incident that may occur. Form 10 will be completed for each
non-compliance incident that may occur. Copies of Forms 9 and 10 will be sent to the Division
Engineer.
Forms 11 through 16 have been combined into Form 19, which will be completed twice each
year during each semiannual site inspection. Form 17, which is the Stormwater Discharge
Outfall Qualitative Monitoring Report, will also be completed twice each year (once in fall and
once in spring) during appropriate rain storm events. Form 18 will be completed each time that
accumulated rainwater is released from exposed secondary containment structures. Form 20 is
the SPPP Management Certification Form that must be signed by the Division Engineer.
Forms 21 through 26 are applicable if the Facility is required to have an SPCC Plan. Form 21 is
the Management Certification and Professional Engineer (PE) Certification that must be both
signed by the Division Engineer, or his/her designee, and sealed by a PE. Form 22 is the
Certification of the Applicability of the Substantial Harm Criteria. Forms 23 and 24 will be
completed for the monthly and annual inspections, respectively, and will be maintained on -site with
this Plan for at least three years. Form 25, Spill Response and Notification Contacts, will be
completed via the website and will be updated as needed. Form 26, the Discharge Report to the
EPA Administrator will be completed if the Facility has an oil spill of more than 1,000 gallons in a
single discharge or more than 42 gallons of oil in each of two discharges, occurring within any
consecutive 12-month period.
NCDOT Stormwater Pollution Prevention Plan

Figure 2. NCDOT SPPP and SPCC Process Diagram
NCDOT Process Diagram for Stormwater Pollution Prevention Plan (SPPP)
& Spill Prevention, Control and Countermeasure Plan (SPCC) Plan
1
Readf Reviewl
Certify SPPP
Target Dare: "0
Personnel
SPPT Leader
Documentation
Farm 1
Form 20'
9
Submit Forms to
Hydraulics Unit
Target Date: 5130
Personnel
Division Engineer
SPPT Leader
Documentation
Forms 1 and 17
$ Review and
Update SPPP
Target Dare: 5130
Personnel
Division Engineer
SPPT Leader
SPPT Members
Documentation
Forms 1, fi, 7 and 8
Implement BMPs Release Rainwater
Personnel
2 3 Division Engineer from Secondary
L
Review BMPs Leader
Containment
Select and 'Target Date: 7130 SPPT Leader
Train SPPT SPPT Members Personnel
TorgetDate:7ld0 Personnel Documentation SPPT Members
Division Engineer Form 1 Documentation
Personnel SPPT Leader Section 2 BMP Tables Forms 1 and 18
SPPT Leader Documentation SWPPP Web Site
Documentation Form 1
Forms 1. 2 and 3 Section 2 BMP Tables SPPP
Continuous Cycle
4 Perform Fall
Wet Weather
Observation Non -Compliance Significant
Target Date. "0 Report Spill Report
Personnel Personnel Personnel
SPPT Division Engineer Division Engineer
SPPT Leader SPPT Leader
SPPP Annual Cycle Docus 1 s dtr17 Documentation Documentation
Forms i and 10 Forms 1 and 9
(dune - May)
7 Conduct
Comprehensive
Facility Inspection
Target Date: 4130
Personnel
SPPT Leader
SPPT Members
Documentation
Forms 1, 4, 5 and 19
Forms 20, 21 & 22 are nol annual requirements b ut must be updated every five years
Conduct Site
Certify SPCC Plan Perform SPCC 1
Inspections
TargatDate: ILV30
(PE & Substantial Monthlyf Annual
Harm Criteria) Inspections
Personnel
Personnel Personnel
SPPT Leader
Division Engineer SPPT Members
SPPT Members
SPPT Leader Documentation
8
Perform Spring
Documentation
Documentation Forms 23 & 24
Forms 21 & 22'
Wet Weather
Forms 1 and 19
Observation
SPCC Plan
Target care: 4rso
Personnel
(If Applicable)
SPPT
Documentation
Forms 1 and 17
*=0j
Submit Discharge Update Spill
Report to LISEPA Response &
(Region IVAdministrator) Notification
Personnel Contacts
Division Engineer Personnel
SPPT Leader SPPT Leader
Documentation Documentation
Form 26 Farm 25
NCDOT Stormwater Pollution Prevention Plan

1.4 PLAN GUIDANCE
1.4.1 Record Keeping
NCDOT has created an SPPP website to track overall SPPP implementation, which includes the
SPPP Annual Cycle Status and BMP Implementation Status. SPCC requirements are also tracked
via the website, and the website can be used by authorized NCDOT personnel to update the status
and document progress at each Facility. The website address is: https:HWs.dot.state.nc.us/sppp/.
This Plan will be maintained via the SPPP website by the SPPT Leader. The Plan will be reviewed
annually and updated by the SPPT as needed. If there are any technical amendments to the SPCC
Plan, then a Professional Engineer must recertify the Plan. Technical amendments include changes
to the Plan that require engineering practice such as including physical modifications or changes in
facility procedures. A blank Record of Plan Reviews (Form 7) is provided. The SPPT Leader will
maintain a record that summarizes the results of inspections and a certification that the Facility is in
compliance with the Plan (indicating accomplishment of BMPs) or identify any incident(s) of non-
compliance (Form 1). Implementation of the Facility Plan includes documentation of all
monitoring, measurements, inspections, maintenance activities, and training provided to employees.
All Plan documentation will be kept on -site for a period of five (5) years and made available to the
DEQ or the EPA Regional Administrator immediately upon request.
The SPPT Leader shall amend the Stormwater Pollution Prevention Plan whenever there is a change
in design, construction, operation, or maintenance that has a significant effect on the potential for
the discharge of pollutants to surface waters. A blank Plan Amendment Records Form (Form 8) is
provided. Amendments should include a brief description of the change, date of change, any new
required BMPs, target dates and completion dates. An amendment made to the Plan must be
prepared within six months of the change in facility operation, and must be implemented as soon as
possible, but not later than six months following preparation of the amendment. Reports and
changes to the Plan will be retained on -site within the Plan document for a period of five (5) years.
The SPPT will evaluate the spill prevention program once each year. Spill prevention items that are
addressed within this Plan and that may need annual review and revision include:
• Review and update materials inventory list (emphasis on hazardous substances);
• Identify potential spill sources;
• Establish incident reporting procedures;
• Develop inspection procedures;
• Review previous incidents;
• Establish a training program; and
• Review new construction and proposed operational changes.
The Permittee will retain records of all stormwater monitoring information required by the Permit
for a period of five (5) years from the date of the sample, measurement, report, or application.
Records will be kept on -site within the Plan document. Copies of any analytical monitoring results
will also be maintained on -site within the Plan document.
NCDOT Stormwater Pollution Prevention Plan

For inspections of secondary containment discharges, records must document the individual making
the observation, the description of the accumulated rainwater, and the date and time of the release
(Form 18). Records will be kept on -site within the Plan document for a period of five (5) years.
Training performed in conjunction with the Plan will be documented with training records
maintained on -site within the Plan document (Form 3). Training outside the scope of the Plan will
also be documented and maintained at a central location on -site. Records will be kept for a period
of five (5) years.
The Facility is not required to submit the Plan for review unless requested to do so by DEQ or EPA.
If the DEQ or EPA reviews the Plan, the Facility may be required to amend the Plan. In the event
that DEQ or EPA notifies the Permittee that the Plan does not meet one or more of the minimum
requirements of the Permit or the regulations, the SPPT will immediately notify the Division
Engineer. Within 30 days of such notice from DEQ or EPA, the Permittee will submit a proposal
and time schedule to the DEQ or EPA for modifying the Plan to meet minimum requirements. The
Permittee will also provide certification in writing, in accordance with the Permit, to the DEQ that
the changes have been made.
1.4.2 Facility Inspections
Semiannual Stormwater System Inspections
NCDOT performs inspections of the Facility and stormwater systems on a semiannual basis —
once in the fall (September —November) and once during the spring (April —June). Records of
these inspections are documented on Form 19. These inspections are required by Section
E.2.b.viii of the NPDES Permit.
1.4.3 Spill Response and Reporting
Spill Response
All spills must be reported immediately to the SPPT Leader or their designated representative. The
SPPT Leader or their representative directs all response, cleanup, notification, and disposal
efforts. Table 1-1 contains the telephone numbers for agencies that the SPPT Leader may need
to contact in the event of a spill.
Trained Facility personnel provide initial response to spills. In the case of large -volume spills,
this Facility will request aid from the local Fire Department, and other appropriate emergency
response agencies may be contacted for assistance with large -volume spills (see Table 1-1).
Warning signs placed at fuel stations, bulk storage tanks, or other refueling areas should contain
emergency telephone numbers to aid in quick response. Fuel Stations that operate 24-hours a day
should post warning signs with 24-hour emergency telephone numbers.
NCDOT Stormwater Pollution Prevention Plan

Table 1-1. State and Federal Spill Response Telephone Numbers
Spill Response Entity
Telephone Number
NCDEQ 24 Hour Emergency Response Spill Reporting
[phone]
National Response Center (NRC)
[phone]
EPA Region 4
[phone]
Minor spills can be absorbed with dry granular absorbents, pads, booms, or socks. Many liquid
hazardous substances stored at the Facility are used inside buildings and are otherwise not normally
exposed to the storm drainage system. Small spills can be controlled by sweeping or mopping the
spilled material into approved containers for proper disposal. Proper disposal includes removing
used absorbent compounds from the floor on a timely basis.
ONLY PERSONNEL TRAINED IN SPILL RESPONSE SHOULD BE ALLOWED TO
CLEAN UP OR RESPOND TO SPILLS.
In the event a spill reaches the storm drainage system or waters of the State, Facility personnel
shall respond to the spill to expedite containment, and the SPPT Leader will notify the
appropriate spill response personnel (see Table 1-1 below for Federal and State Response
numbers) for spill containment and/or cleanup. If a fire or security problem associated with a
discharge arises, the Police and Fire Department shall be immediately contacted at 911 for
emergency assistance.
This Facility does not use any extremely hazardous substances, but certain precautions regarding
other materials are necessary. Spills that occur outside on vehicle parking lots or equipment storage
lots where there is no secondary containment will be immediately addressed with appropriate spill
response equipment and procedures. Necessary measures will be taken to prevent soil
contamination and to prevent any spills from reaching the stormwater drainage system.
In general, four basic steps should be taken to control pollution that can result from a spill:
1. Stop the spill at the source.
2. Contain the spill.
3. Collect the spilled material.
4. Dispose of the spilled material and subsequent contaminated material properly and
legally.
Steps 3 and 4 should be undertaken only by personnel who are properly trained in spill response and
cleanup. Table 1-2 summarizes spill response, reporting, and cleanup for oil. Note that oil is
defined as oil of any kind or in any form, including, but not limited to: fats, oils, or greases of
animal, fish, or marine mammal origin; vegetable oils, including oils from seeds, nuts, fruits, or
NCDOT Stormwater Pollution Prevention Plan

kernels; and, other oils and greases, including petroleum, fuel oil, sludge, synthetic oils, mineral
oils, oil refuse, or oil mixed with wastes other than dredged spoil. This definition includes CRS-2.
Table 1-2. Oil Spill Response, Reporting, and Cleanup
Spill Volume
Response
Reporting
Cleanup
Any amount on -site
Facility Personnel
SPPT Leader
Sorbent Material, Pads
25 gallons, or sheen,
or < 100 feet from water
Facility Personnel
SPPT Leader, NCDEQ
Sorbent Material, Pads
Greater than 1,000 gallons
Facility Personnel,
SPPT Leader, USEPA,
Qualified HAZMAT
Fire Dept/Contractor
NRC, NCDEQ
Contractor
Any amount that reaches a
Facility Personnel,
SPPT Leader,
Qualified HAZMAT
navigable Water
Fire Dept/Contractor
USEPA, NRC, NCDEQ
Contractor
Spill Reporting
All releases of oil to waters of the United States (i.e., receiving stream) that cause a film, sheen, or
deposition, or violate applicable water quality standards will be immediately reported to the
National Response Center (NRC).
The Permittee must report to the Division Engineer and-DEQ any non-compliance that endangers
human health or the environment. A blank Non-compliance Report (Form 10) is provided. Any
information shall be provided orally within 24 hours (or as soon as practical) from the time the
Permittee becomes aware of the circumstances. A written submission (Form 10) to DEQ shall
also be provided within five (5) days of the time the Permittee becomes aware of the
circumstances.
The written submission will contain a description of the non-compliance, and its causes; the
period of non-compliance, including exact dates and times, and if the non-compliance has not
been corrected, the anticipated time compliance is expected to continue; and steps taken or
planned to reduce, eliminate, and prevent reoccurrence of the non-compliance.
1.4.4 Personnel Training
Personnel training is essential to the effectiveness of this Plan. Personnel at all levels of
responsibility will be trained in the components and goals of the NPDES program (and the SPCC
program where applicable), the regulations, and this Plan.
It is the SPPT Leader's responsibility to train personnel to:
• Identify and manage potential spills that can occur from equipment and containers of
petroleum and hazardous substances and review spill prediction scenarios;
• Recognize toxic and hazardous substances located on -site; and
• Prevent, or minimize to the extent practical, stormwater pollution at the Facility.
NCDOT Stormwater Pollution Prevention Plan

The SPPT Leader must ensure personnel are trained in:
• Requirements of the Plan and applicable rules and regulations;
• Proper and safe spilled material cleanup;
• General facility operations;
• Operation and maintenance of equipment to prevent discharges;
• Instruction on securing drums and containers;
• Frequent checking for leaks and spills;
• Proper handling and storage of hazardous substances;
• Identification of toxic and hazardous substances and wastes stored, handled, used, and
produced on -site;
• Preventative maintenance of equipment and stormwater controls;
• Preventing exposure of petroleum -based fuels, oils, and lubricants (POLs), hazardous
substances, and waste materials to stormwater;
• Good housekeeping procedures;
• Spill prevention and response;
• Safe fuel handling procedures; and
• Past discharges or failures, malfunctioning components, recently developed
precautionary measures, and lessons learned.
Provide training for new personnel promptly upon assignment and provide personnel refresher
training on an annual basis. Ensure that all personnel training is documented. A blank Training
Documentation Sheet (Form 3) is provided on the website. Keep completed copies of the form on -
site with the Plan document for at least five (5) years. The SPPT Leader will develop a schedule
and coordinate training for all SPPT members in the elements of the Plan. The SPPT members will
coordinate training on the proper completion of BMPs for personnel under their direction. Training
includes:
• Watching the SPPP "Doing your Part at NCDOT" Video
• Watching SPCC Plan Video
• Reviewing flyers and other Training Material
• Attending Monthly Training Meetings
1.4.5 Qualitative Monitoring Guidance
Stormwater discharge qualitative monitoring (visual observations) will be performed at each
designated outfall point as shown in the Facility Site Map (Figure 4). The Permit requires that all
industrial stormwater discharge outfalls be observed twice per year, once in the spring (April —June)
and once in the fall (September —November). All qualitative monitoring shall be performed during
NCDOT Stormwater Pollution Prevention Plan

a storm event that has been preceded by at least 72 hours of dry weather. The table below shows
the parameters for which discharges from industrial outfalls will be observed. No analytical
monitoring is required.
Discharge Characteristics
Frequency
Location
Color
Semi -Annual
SDO
Odor
Semi -Annual
SDO
Clarity
Semi -Annual
SDO
Floating Solids
Semi -Annual
SDO
Suspended Solids
Semi -Annual
SDO
Foam
Semi -Annual
SDO
Oil Sheen
Semi -Annual
SDO
Other indicators of pollution
Semi -Annual
SDO
Erosion at or immediately below the outfall
Semi -Annual
SDO
Monitoring Location: Visual observation shall be performed at each industrial stormwater
discharge outfall (SDO) or at the next accessible point upstream.
Visual monitoring is conducted for the purpose of evaluating the effectiveness of the SPPP and
assessing new sources of stormwater pollution. A blank Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report (Form 17) is provided on the SPPP website. Directions for
completing the report follow. Completed originals of the Qualitative Monitoring Reports will be
kept on -site with the SPPP document for at least five (5) years.
Adverse weather conditions that 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, SPPT personnel are required to follow standard NCDOT safety practices, including
wearing safety vests and steel -toed boots.
If the storm event monitored and reported in accordance with the Permit coincides with a non-
stormwater discharge, the Facility shall separately monitor and report all parameters as required
under the non-stormwater discharge Permit and provide information with the Stormwater
Discharge Outfall Qualitative Monitoring Report.
Directions for Completing the Oualitative Monitoring Report (Form 17)
1. This report is to be completed once in the spring and once in the fall for each
industrial stormwater discharge outfall located at the Facility. Use one form for
each outfall. Qualitative monitoring must occur during a rainfall event. This form
can also be used to make outfall observations during semiannual site inspections.
2. Refer to the enclosed Facility Site Map for outfall location and identification.
3. Wait for a rainfall event that has been preceded by approximately 72 hours of dry
weather. Shortly after rainfall begins, discharge will begin flowing from the outfall.
After discharge has been flowing 5 to 30 minutes, collect about one-half liter of
NCDOT Stormwater Pollution Prevention Plan

discharge water into a clean glass container and record the observations.
Observations can apply either to the collected water or to the flow from the outfall.
4. An example of a color description is light red or dark brown.
5. An example of an odor description is strong smell of rotten eggs or faint smell of
gasoline.
6. Clarity is a measure of the cloudiness of the water. Score the water quality 1 for
clear, 2-5 for murky, 6-8 for very cloudy, and 9-10 for opaque.
7. Floating solids are things like trash, pieces of plastic, shavings, or other items that
float and can cause receiving stream degradation. Grass clippings should also be
reported because the dumping of yard debris into the storm drainage system is not
allowed.
8. Suspended solids are typically small particles such as grit or sediment that are
suspended within the water column.
9. Foam can be caused by detergents and other chemicals, as well as from a natural
occurrence due to the area's soil mineralogy. Circle "yes" if foam is present.
10. Any amount of oil sheen is technically a violation of the Clean Water Act (40 CFR
110.3). Realistically, incidental oil sheen from parking lot runoff cannot be totally
eliminated. If an oil sheen is visible, circle "yes."
11. Erosion at or immediately below the outfall should be noted.
12. Other possible indicators of stormwater pollution include distressed vegetation at
the outfall outlet, deformed amphibians, a dry weather flow, illicit connections, or
improper disposals.
13. The more detail provided the better. This form will be used to assess the
effectiveness of evaluations.
14. The inspector will note that the form has been completed.
15. Insert the completed form into the SPPP document. The Permit does not require a
copy of this form be sent to DEQ, but the form must be the SPPPs during annual
SPPP kept on -site with the SPPP document.
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. Refer to Chapter 3, Best Management Practices, for
descriptions of applicable measures that can be implemented to reduce pollutants. Other sources
such as the NCDOT BMP Toolbox or direction from the Hydraulics Unit can also be used to select
appropriate pollution reduction measures.
1.4.6 Non-stormwater Discharges
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." As
NCDOT Stormwater Pollution Prevention Plan

stated in the Permit, the only non-stormwater discharges that shall be allowed in the stormwater
conveyance system are as follows:
• All other discharges that are authorized by a non-stormwater NPDES Permit;
• Uncontaminated groundwater, foundation drains, air -conditioner or air compressor
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; irrigation drainage, landscape watering, pavement wash
water which does not use detergents and no spills or leaks or toxic or hazardous
materials have occurred (unless all materials have been removed), routine external
building wash down which does not use detergents, and incidental windblown mist
from cooling towers that collect on rooftops.
• Discharges resulting from fire -fighting training without chemical additives or from fire-
fighting.
Vehicle and equipment washwater is not included in the definition of allowable non-
stormwater discharges in the NCDOT Permit, and is therefore not allowed to discharge
into the stormwater drainage system or adjacent waters of the State. See Section 3.3.3 for
accepted vehicle washing procedures.
Note also that discharges of washwater from steam cleaning, parts washers, and other equipment
cleaning operations are not allowed to enter the stormwater drainage system.
The holders of NPDES permits for discharges of stormwater associated with industrial activity are
required to perform an investigation to show that outfalls discharge only stormwater or one of the
allowable discharges defined previously. An investigation to identify potential non-stormwater
discharges will be performed using Form 5 each year during the second semiannual site inspection.
NCDOT shall certify that the investigation is performed for areas where industrial activity occurs.
Form 5 and the Certification of Non-Stormwater Discharges (Form 6) is available on the
SPPP/SPCCP website. The investigation shall determine that the discharges from each outfall are
composed only of stormwater or a permitted discharge.
The following methods are typically employed in these types of investigations to determine whether
non-stormwater discharges are present:
• Visual observation of the outfalls;
• Interview with Facility personnel;
• Review of as -built infrastructure drawings and plumbing plans;
• Testing of floor drains and drainage system using water, smoke, dye, or video; and
• Analytical monitoring.
When non -permitted non-stormwater discharges or unauthorized sewer (e.g., sinks, floor drains)
connections are discovered, a plan to eliminate the discharge shall be developed and carried out.
Non-structural corrective actions should be performed immediately and will require an amendment
to the SPPP to reflect the completion of the BMP. Structural modifications should be made as soon
as possible.
NCDOT Stormwater Pollution Prevention Plan

The Permittee is aware of the upset or bypass notification procedures as specified in the Facility's
NPDES Permit and will act accordingly (See Part IV, Section B, Paragraph 3 of Permit).
1.4.7 Releases from Secondary Containment Structures
Drainage from secondary containment for bulk storage of liquid materials will be controlled by
manually activated valves or other similar devices. The drain valves for containment structures
will be closed at all times except when making a controlled release. The drain valves will be
secured with a locking mechanism. Any stormwater that accumulates in the containment area
will be visually observed for color, foam, outfall staining, visible sheen, and dry weather flow
prior to release of the accumulated stormwater. After each significant precipitation event,
Facility operators will inspect the rainfall or snowfall that has accumulated in the containment
areas. If there is no evidence of oil or chemical contamination, the valves can then be opened to
release the clean stormwater to the drainage system. If oil or chemicals appear to be present, the
contaminants will be removed and disposed of in accordance with local, state, and federal
regulations. It may be necessary to remove and dispose of all the accumulated rainwater as a
contaminated waste. Contact your Division Hazardous Waste Manager for assistance in removal
and/or disposal of contaminated rainwater.
The drain valve openings and releases are required to be documented. A blank Release of
Rainwater from Secondary Containment Structure (Form 18) is provided to document the releases.
Completed copies of the form will be inserted into the document and kept on -site for at least five (5)
years. After releasing accumulated rainwater, the drain valve will be closed and locked.
An accidental release from a secondary containment structure, including diked or bermed areas,
should be treated like an accidental release or spill from any aboveground storage tank (AST).
Appropriate spill response and reporting procedures will be followed to document the release.
Accumulated sludge in non -exposed secondary containment structures will be characterized,
either by analytical methods or generator knowledge, and disposed of accordingly.
1.4.8 Existing Environmental Plans
Existing stormwater management practices required by other existing environmental management
plans have been evaluated and applicable portions have been incorporated into this Plan. Future
stormwater management practices required by other regulations will be evaluated by the SPPT and
incorporated into the Plan during the annual update. The SPPT Leader will maintain a current copy
of each of these plans.
NCDOT Stormwater Pollution Prevention Plan

SECTION 2
FACILITY ASSESSMENT
AND BMP ACTION PLAN
NCDOT Stormwater Pollution Prevention

2.0 FACILITY ASSESSMENT AND BMP ACTION PLAN
The goal of the SPPP is to ensure to the maximum extent practicable that only the highest quality of
stormwater runoff is discharged from the Orange County Maintenance Yard. To achieve this goal
the Facility was evaluated to assess stormwater pollution potential and identify BMPs to reduce
pollutant loading. The Facility maintains compliance via site inspections, annual compliance
evaluations, and qualitative monitoring. This section is organized into the following subsections:
• Facility Location
• Facility Description
• Facility Security
• Facility Drainage
• Facility Spill History
• Facility Risk Assessment
• Facility BMPs
The information collected during the initial assessment was used to develop the components for a
BMP action plan. Existing BMPs were identified that would be ongoing. In addition, baseline and
site -specific BMPs were identified to improve stormwater quality and bring the Facility into
compliance. These BMPs were largely implemented during the 1998 permit period and are
documented and tracked on the SPPP website. Additional BMPs will be added as necessary.
2.1. FACILITY LOCATION
NCDOT Orange County Maintenance Yard is located approximately two miles south of the City
of Hillsborough's central business district. The approximate coordinates of the Facility are 36 03
00,-79 06 01. NCDOT maintains approximately 15 acres at this location. The Facility is located
on 2122 Clarence Walters Road, Hillsborough. The Facility is bounded immediately to the west
by Old Hillsborough Road (SR 1009). The Facility is bounded immediately to the east by a
commercial area, an office building and a light industrial park. The Facility is bounded
immediately to the north by a state prison owned and operated by North Carolina Department of
Public Safety (NCDPS). The surrounding property to the west consists of residential parcels. The
property to the south consists primarily of an industrial park and an Orange County School
Maintenance Facility. Figure 3 shows the location of the Facility.
2.2. FACILITY DESCRIPTION
Activities performed at the Facility include maintenance and repair of vehicles and equipment,
refueling, hazardous materials storage, and raw material storage. The layout of the Facility is
shown in Figure 4. Figure 4 identifies building locations, stormwater drainage systems, industrial
waste systems, potential pollution sources, and any stormwater discharge outfalls.
The Facility sanitary sewer system and septic system collects domestic sewage from on -site sanitary
facilities. The sanitary sewer wastewater lines at the Facility are connected to the Town of
Hillsborough Wastewater Treatment Plant.
NCDOT Stormwater Pollution Prevention Plan

92
This Facility has the following industrial activities:
Vehicle and Equipment Maintenance
Stormwater discharges covered in this category include runoff from areas where the following
maintenance activities may occur: fluid changes; mechanical repairs; parts cleaning; vehicle washing;
storage of vehicles and equipment waiting for repair or maintenance; and storage of the related
materials and waste materials such as oil, fuel, solvents, batteries, tires, or oil and fuel filters.
Vehicle Refueling Operations
Stormwater discharges covered in this category include runoff from areas where motor vehicle
refueling operations may occur. These activities include fuel delivery to the facilities, fuel storage
both in separate containers and in vehicle tanks, and fuel dispensing.
Hazardous Materials Storage
Storage areas for new and waste materials such as paint, solvents, oil, lubricants, liquid asphalt,
calcium chloride, batteries, and filters are included when the storage areas are either directly exposed
to rainfall or when spills or leaks from these areas have the potential to enter the storm drainage
system.
Raw Material Stockpiles
Stormwater discharges covered in this category include runoff from stockpiles, bins, scrap piles, and
storage areas. Stockpiles of salt, sand, aggregate, and cold patch mix are often exposed to
precipitation and cause stormwater pollution due to sediment or chemical constituents in runoff.
Original copies of Figures 3 and 4 are located on the SPPP website and hardcopies are kept in the
Facility SPPP binder. The following link may serve as Figure 3 — Site Location Map. Print a
copy of each map as it is updated -and place in your SPPP binder.
http://maps.google.com/maps?f--q&hl=en&q=36+03+00,-79+06+01
The Facility consists of the following components: Highway Maintenance Yard, Equipment Shop,
Traffic Services Shop, Fuel Station.
A description of these components follows:
Highway Maintenance Yard
Highway Maintenance provides maintenance such as pavement repair and safety inspections of State
highways for the NCDOT. The Maintenance Yard at this Facility consists of administrative offices
(Building 1); a maintenance shop (Building 11); a CRS-2 AST (AST-1); salt brine ASTs (ASTs 10-
14); salt storage buildings (Buildings 5 and 6); sand/salt mixture storage (Building 7); a storage
building (Building 9); several equipment storage buildings (Buildings 18 and 20); spreader rack
(Building 10); a wash area; a salt storage building (Building 36); a covered storage building (Building
46); several aggregate storage areas; and a vehicle, equipment and material storage yard. Scrap
metals, tires, pipes, parts, equipment, vehicles and various construction materials are stored
throughout the maintenance yard. These materials are exposed to precipitation.
NCDOT Stormwater Pollution Prevention Plan

Building 1 — This building is a concrete block building used as a maintenance administrative office.
Floor drains located in the restrooms of this building are connected to the sanitary sewer system. No
liquid hazardous substances are stored in this building. Asphalt paved parking lots for vehicles are
located outside Building 1.
Building 11— This is a concrete block building on slab used as a maintenance shop. No floor drains
are located in the building. A 440-gallon AST (designated as AST-9 in Figure 4) containing asphalt
release agent is stored on a spill containment pallet under a lean-to outside Building 11. Several 55-
gallon drums (designated as DRUM-11 in Figure 4) of waste asphalt are stored on spill pallets under
the lean-to.
CRS-2 AST — A 7,000-gallon AST (designated as AST-1 in Figure 4) containing CRS-2 with a
dispensing station is used to store and load CRS-2. A concrete block wall surrounding the AST
provides secondary containment. The block wall contains blocks filled with concrete and mortar.
There is a drain in the secondary containment area. The floor in the containment area consists of
concrete. A drum storage area (designated as DRUM-12 in Figure 4) is located within the block wall.
This includes a 55-gallon drum containing diesel fuel and a 55-gallon drum which stores overflow
CRS-2 from filling and unfilling the tank. Both drums are under a small covered shed to protect from
precipitation. There is a spill kit located in this area. A CRS-2 distributor parking area is located near
AST-1.
Salt Brine ASTs — Five 5,000-gallon salt brine tanks (designated as ASTs 10-14 in Figure 4) are stored
on a concrete pad. A concrete wall surrounding the ASTs provides secondary containment. A release
valve located in -wall is used to drain excess rainwater. This valve is closed and locked during normal
operation. An open top brine mixing structure and pump house are also located in the containment
area.
Buildings 5 and 6 — These are three -sided wood buildings with metal roofs. Both Buildings 5 and 6
are used for the storage of salt. Loading operations are performed in front of the buildings.
Building 7 — This is a three -sided wooded building with a metal roof. This building is used for the
storage of salt/sand mixture. Loading operations are performed in front of the buildings.
Building 9 — This is a covered three -sided wood building with an asphalt floor. The building is used
to store miscellaneous materials including metal pipe bands and cones. Cold patch and salt are also
stored in the building.
Building 18 — This is a concrete block building constructed on slab with a loading dock. No floor
drains are located in the building. The building is used as a warehouse. Miscellaneous materials and
dry goods are stored in this building. A spill kit is located in Building 18. A 6-inch PVC foundation
drain for Building 18 discharges to a grassy area west of the building. This is an allowable discharge
under the Permit.
Building 20 — This building is used for dry material storage including signs and cones. Posts, lumber
and traffic barricades are stored outside of Building 20. These materials are exposed to precipitation.
Building 10 — This is an open -sided spreader racks used to store spreaders.
NCDOT Stormwater Pollution Prevention Plan

Building 36 — This salt storage building is a three -sided building constructed of concrete block and
wood. Salt is stored in three bays each having an asphalt floor. No floor drains are located in this
building.
Building 46 — This covered storage building consists of five storage bays, including three drive-thru
equipment storage bays and two three -sided bays used for salt storage and cold patch storage.
Pavement surrounds the building. Loading operations occur outside the west side of the building.
Foundation drains for Building 46 discharge to grass -covered areas east of the building. These are
allowable discharges under the Permit.
Material Storage Areas — These areas are used to stockpile sand, soil, aggregate, pipe, and
miscellaneous construction materials. These materials are exposed to precipitation. The storage yard
also contains a bermed sand stockpile that is contained on three sides by traffic barricades.
Stormwater runoff from this area flows south before entering a ditch that discharges off -site at SDO-
002. The storage yard also contains storage areas for pipes, tires, stakes, barriers, timbers, and scrap
metal. These materials are exposed to precipitation. Runoff flows south across the Facility before
entering a ditch and discharging off -site at SDO-002. A concrete pipe storage area is located at the
south end of the yard.
The storage yard areas are primarily dirt or gravel. Silt basins and a rock pipe inlet sediment trap
Type -A have been installed along the ditches and areas receive periodic seeding throughout the
storage area.
Equipment Shop
The Equipment Shop provides maintenance and repair of vehicles and equipment, and vehicle
refueling. The Equipment Shop at this Facility consists of an equipment shop (Building 17), a wash
and lube building (Building 16), a vehicle wash area, an oil house (Building 15), a generator building
(Building 33), a tire storage building (Building 43), a dry storage building (Building 44), and a
vehicle/ equipment storage yard. A mobile lube truck containing 700 gallons of gasoline, diesel fuel
and lubricants is operated by this Shop; the lube truck is parked on -site when not in the field.
Building 17 — This building contains offices, a maintenance bay, and a parts storage area. Building
17 is a concrete block building with a concrete floor. No floor drains are located in this building. A
solvent parts washer and a 55-gallon drum of solvent are located in the maintenance bay area.
Secondary containment is provided for the drum. Personnel from the shop place used oil into a 1,000-
gallon tank (designated as AST-5 in Figure 4) located outside the Building. Dry granular absorbents
are used for small spills or leaks in the maintenance bay. Additional spill response materials are
located in this building. An office/ stock room contains miscellaneous parts, office equipment and
containers of brake fluid. This building also stores numerous 55-gallon drums which contain motor
oil, hydraulic oil, and transmission fluid (designated as DRUM-6, DRUM-7, and DRUM-8 in Figure
4). These drums are contained by the building and are kept in a storage area. The second floor has a
self-contained flammables cabinet that contains small quantities of aerosols, paint, and cleaners.
Miscellaneous parts are also stored on the second floor. Bags of pads and a broom are stored on the
second floor. An emergency generator with a 60-gallon integral diesel fuel tank (designated as GEN-
NCDOT Stormwater Pollution Prevention Plan

2 in Figure 4) is located outside the building. A 700-gallon lube truck is stored under cover outside
of Building17 when not in the field.
Building 16 — This building contains a POL storage room and four bays used for vehicle washing and
lubrication. The building is constructed of concrete block with a concrete floor. A central floor drain
discharges through two OWSs (designated as OWS-1 and OWS-2 in Figure 4) to the sanitary sewer
system. A steam jenny and a lube rack are located in the building but are not in operation. The POL
storage room remains empty and no floor drains are located in this room.
Vehicle Rinse Area — A vehicle rinse area on the east side of the yard is used to clean NCDOT trucks
and equipment returning from field activities. Rinse water from the vehicle rinse area sheetflows
south into a vegetated swale southwest of the rinse area. No detergents are utilized in vehicle cleaning;
only water is used at this location.
Building 15 — This is a wood building with a concrete floor. No floor drains are located in this
building. This building is used to store chain saws, bar oil, and 2-cycle oil. A flammable cabinet is
located in the building for material storage. Two empty metal containers are also stored in this
building. A spill kit is located in this building. Dry granular absorbents are used on the shop floor
for minor spills and leaks. An emergency generator with an 84-gallon integral diesel fuel tank
(designated as GEN-1 in Figure 4) is located outside the building.
Building 33 — This is a concrete block and wood building with a concrete floor. A spill kit is located
in the building.
Building 43 — The tire house is a wooden Leonard type storage building used to store tires and chains.
Used antifreeze is stored in a 55-gallon drum horizontally in the building (designated as DRUM-10
in Figure 4). Tires and used batteries stored at this building. Scrap metal and signs are stored outside
of Building 43 in dumpster bin. A spill kit is located nearby in Building 17.
Building 44 — This dry storage building is used to store tires and chains. No liquid hazardous
substances are stored in this building.
Traffic Services Shop
The Traffic Services Shop provides maintenance and inspections of traffic control devices (e.g., signs,
barriers, signals) and material storage for NCDOT. The Traffic Services Shop at this Facility consists
of administrative offices and storage (Building 14), a stockpile area, and a vehicle and equipment
storage yard. Metal sign posts and various equipment are stored outdoors in the yard.
Building 14 — This building contains offices, restrooms, and a sign storage area. No liquid hazardous
substances are stored in this building.
Stockpile Area — This stockpile area is used for the storage of timbers, aluminum posts, and metal
posts. These materials are separated by traffic barriers and are exposed to precipitation.
Fuel Station
NCDOT Stormwater Pollution Prevention Plan

The Fuel Station consists of a refueling island and three USTs. The station is used for the refueling
of NCDOT and other State-owned vehicles and is a 24-hour per day operation. Each vehicle being
refueled must use a coded key to dispense fuel. The amount of fuel used is computer recorded for
each vehicle. Each key is coded with a maximum fuel amount based on the vehicle tank capacity.
The computer dispensing system is designed to not exceed the fuel capacity of each key coded vehicle.
The station is well lit by on -site lighting to discourage trespassing or vandalism and to aid in spill
discovery.
Fuel Island — The fuel island has five pumps for the dispensing of gasoline and diesel fuel. The pumps
are equipped with dead -man switches which shut off fuel when the grip is released. The emergency
shut off is located adjacent to a pump. A covered concrete pad surrounded by asphalt pavement is
provided at the vehicle refueling stand. A spill kit is located at the island.
A 15,000-gallon UST containing gasoline, 15,000-gallon UST containing diesel fuel, and 12,000-
gallon UST containing E-85 Gasoline (Ethonol) are located adjacent to the fuel dispensing island.
The USTs (designated as UST-3,UST-2, and UST-1 in Figure 4) are provided with leak detection
systems.
Deliveries of fuel to the USTs are made by outside contractors with tanker trailers. Standard operating
procedures followed during fuel deliveries include manual gauging of the receiving tanks prior to fuel
transfer, and continuous monitoring of the transfer tanks, valves, fittings, and hoses.
Each dispenser is equipped with break -away hoses to prevent the dispenser from being pulled over.
Also, each dispenser is connected to the underground product line by a shear valve to automatically
shut off the flow of product in case the dispenser is knocked over. The tanks are equipped with Red
Jacket line leak detectors that will shut off product flow if the system is damaged.
2.3. FACILITY SECURITY
Establishing a security system may prevent an accidental or intentional release of oil or hazardous
substances to the stormwater drainage system as a result of vandalism, theft, sabotage, or other
improper uses of Facility property.
The Facility has existing security policies and enforcement procedures. Aboveground material
storage areas, including vehicle parking areas are fully enclosed by a perimeter chain link security
fence. Access gates to the Facility are locked during non -working hours. The Fuel Station pump
controls are key -coded. Overhead lighting is provided for the Facility.
2.4. FACILITY DRAINAGE
The Facility is located in the Piedmont physiographic region. Soils at the Facility are in the
Georgeville-Herndon-Tatum and the Tatum-Goldston associations which locally are silt loam and
slaty silt loam. These soils are well drained with medium to rapid runoff and moderate to
moderately rapid infiltration properties. A clay loam to clay subsoil lies 4 to 65 inches below the
[undisturbed] surface (Soil Survey of Orange County, USDA, 1977). The soils have been
disturbed due to construction of the Facility and are probably more compacted near the surface
than the natural soils in the vicinity.
NCDOT Stormwater Pollution Prevention Plan

Some of the industrial areas of the site are paved in the vicinity of the buildings, including the
areas around the Equipment Shop and the Fuel Station. However, most of the storage yards are
gravel or dirt. Spills on the site where there is no pavement may enter the ground before entering
waters of the State. Spills elsewhere on the site would probably enter waters of the State via catch
basins and other storm drainage structures.
The Facility's spill response capabilities as described in Section 1.4.3 and proper personnel
training as described in Section 1.4.4 will protect against potential discharges to storm drainage
systems from any undiked area.
The topography of the terrain within the Facility is gently sloping. The Facility is located in the Neuse
River Basin. Stormwater runoff at the site drains south into an unnamed, unclassified tributary of
Cates Creek. This segment of Cates Creek is classified as C, NSW with a use -support rating of
supporting threatened.
Two stormwater discharge outfalls (SDOs) are located at this Facility (see Figure 4). SDO-001
collects runoff from the western portion of the County Maintenance Yard. Off -site runoff from
NCDPS northeast of the Facility drains through SDO-001.
SDO-002 collects runoff from the eastern portion of the County Maintenance Yard's industrial
activities and includes some off -site runoff from NCDPS property.
Characteristics of the industrial stormwater drainage outfalls are identified in Tables 2-1 and 2-2.
Table 2-1 identifies the outfall(s) (defined here as point source discharges of stormwater to "waters
of the State"), outfall type and outfall location (latitude and longitude coordinates).
Table 2-1. Industrial Outfalls
Outfall Name
I Type
Latitude
Longitude
1
24-inch pipe
36 03 04
-79 06 15
2
Ditch
36 02 57
-79 05 57
Visual observations of stormwater discharges will be performed for outfall(s) listed in Table 2-1
at designated points, as shown in Figure 4. Visual observations will be conducted as described in
Section 1.4.5 and documented using Form 17. Table 2-2 identifies the outfall drainage characteristics.
A drainage area identification number is assigned to each outfall and shown on Figure 4. Table 2-2
also identifies the on -site drainage area (DA), percent impervious surface, contributory off -site
drainage for each outfall, and name of receiving water(s).
Table 2-2. Outfall Drainage Characteristics
Outfall Name
Drain Basin
On Site DA
Percent Imp
Off Drain
Receiving
1
DA-001
5
65
NCDPS
Cates Creek
2
DA-002
10
20
NCDPS
Cates Creek
NCDOT Stormwater Pollution Prevention Plan

2.5. FACILITY SPILL HISTORY
A description of the Facility spill history is provided below.
There have been no significant spills of oil or hazardous substances reported at this Facility in the
three years prior to the effective date of this Plan.
2.6. FACILITY RISK ASSESSMENT
The Facility operations that have a risk of contributing to a spill that may contaminate the stormwater
drainage system and adjacent waters of the State are described below.
The Facility operations that have a high risk of contributing to a large spill which may contaminate
the stormwater drainage system and adjacent waters of the State are the delivery or transfer of fuels
from storage tanks or refuelers, or the failure of a storage tank. Outdoor refueling, material
handling, vehicle and equipment cleaning are high risk sources of stormwater pollution. Proper
refueling and materials handling procedures as detailed in Chapter 3 - Best Management Practices
will reduce the potential for fuel spills.
Non -permitted discharges identified at this Facility are documented on Form 5. There is a high
risk of pollutants entering the stormwater drainage system from non -permitted discharges. A plan
to eliminate any identified non -permitted discharges at the Facility must be developed and carried
out.
Other moderate risks are incurred during delivery and off-loading of POLs and other hazardous
substances. There is a moderate risk of small spills in vehicle and equipment parking areas and
HAZMAT storage areas. Such spills can be from paint, lubricating oils, fuel, cleaning compounds,
and brake or other hydraulic fluids. The use of portable POL dollies without adequate secondary
containment and spill response materials represents a moderate risk of spills and leaks.
A list of materials exposed to stormwater runoff at the Facility is documented on Form 4. There is a
moderate risk of pollutants entering the stormwater drainage system from exposed materials. Where
practical, the Permittee can provide cover for or will relocate exposed materials indoors. Vehicles
awaiting repair and scrap parts can introduce pollutants if these items are not completely emptied of
fuels and lubricants, or are coated with oily residues. Where practical, the Permittee can conduct
refueling, material handling operations, and vehicle and equipment cleaning operations indoors or
under cover. In areas where the elimination of exposure is not practical, the Permittee will attempt to
minimize stormwater run-on at these locations by diverting stormwater runoff away from the areas of
potential contamination.
Some identified materials subject to long term exposure to precipitation represent a low-level risk of
stormwater pollution. Lead, zinc, and other heavy metals can precipitate from exposed items (e.g.,
galvanized sign posts, scrap metal) in contact with acidic rainfall. The Permittee has studied the issue
of providing cover for outdoor storage areas. It is impractical to cover all vehicle parking areas and
yards where items such as pipes, beams, and timbers are stored. Since these items represent a
negligible potential for stormwater pollution, a constructed roof covering is not warranted. Scrap
materials and other items no longer in use will be removed from the site promptly.
NCDOT Stormwater Pollution Prevention Plan

Except for bulk storage of liquids, operations that occur inside buildings present low risks of
stormwater pollution. The positioning of drums and containers of hazardous materials near exterior
doors increases the potential for a spill to flow from the building and into the stormwater drainage
system. Such containers will be located away from exterior doors where practical.
2.6.1. Potential Spill Scenarios
Equipment failures may result in discharges of oil or hazardous substances in varying amounts
over varying periods of time. Structural, mechanical, or instrument failures may include tank
rupture, or piping and fitting failures associated with the use of various petroleum and non -
petroleum products. These failures can occur as the result of structural deficiencies, material
defects, unchecked corrosion, and extreme stresses resulting from unusual internal or external
pressures, or from external loads.
The potential spill sources, quantity of the potential spill, probable direction of flow, and the
method of containment are discussed in this sub -section. Specific flow rates for each scenario are
dependent on the size of the failure or rupture; however, the spill scenario is assumed to be a
catastrophic release, where the entire container quantity is released within two (2) minutes — see
Section 2 and 4.1 for container quantities, contents and method of containment. Refer to the
Facility Site Map for direction of flow in the event of a spill, or to determine direction of flow for
emergency response planning in the event of a catastrophic release. Spill prediction scenarios are
reviewed by personnel during annual training as specified in Section 1.4.4. Facility experience
does not indicate a reasonable potential for equipment failure.
2.7. FACILITY BMPS
A BMP action plan is a key component of the SPPP. Proper selection and implementation of both
structural and non-structural BMPs is necessary to reduce pollutant loading to stormwater. SPPP
BMPs are grouped into the following three categories:
• Existing BMPs
• Baseline BMPs
• Site -specific BMPs
Existing BMPs identified during a site assessment of the Facility are listed on the SPPP website.
Existing BMPs are identified in BMP tables with the prefix "Exist" followed by an identification
number.
Baseline BMPs are required for all Facility buildings/areas and are listed on the SPPP website.
These BMPs are identified in BMP tables with the prefix "Facility" followed by an identification
number.
Site -specific BMPs are specific to a particular zone or building on the Facility and are listed on
the SPPP website. Site -specific BMPs are identified in BMP tables with a "building number"
prefix followed by an identification number.
The SPPP documents existing BMPs the Facility is already implementing and provides new
baseline and site -specific BMPs that the Facility is required to implement. Since the original five-
NCDOT Stormwater Pollution Prevention Plan

year Permit term, the SPPP website has become the primary tool for documenting and tracking
BMP implementation for the Facility. The SPPP website and its supporting database provide
several BMP tables to document and track BMP implementation each year for the Facility. The
SPPP website allows the Facility to document certain "annual cycle" BMPs that must be
implemented on an annual basis, as well as other BMPs that only need to be completed once. Each
BMP table contains a reference column "Ref' which provides more detailed BMP information
contained in Section 3 of this SPPP. The SPPP website provides a historical record of BMP
implementation at the Facility.
BMPs are to be implemented to the maximum extent practicable. Due to changing practices, activities
and technology, this is an elusive goal. The SPPT will continue to review activities at the Facility to
determine if BMPs should be added, modified, or deleted. BMP modification can result from changes
in activities performed at the Facility. The SPPP website can be used by the SPPT to add additional
BMPs when determined necessary, such as during the annual comprehensive site inspections. A
brief description written in the appropriate table on the SPPP website is sufficient for Permit
compliance. Deletions or modifications will also be documented on the SPPP website.
NCDOT Stormwater Pollution Prevention Plan

SECTION 3
BEST MANAGEMENT PRACTICES
NCDOT Stormwater Pollution Prevention Plan

3.0 BEST MANAGEMENT PRACTICES
3.1 BMP ASSESSMENT PROCESS
The Permit requires that the Facility consider and implement practical best management
practices (BMPs). This section describes the process used to select the BMPs listed in Section 2 as
well as provides further description of the purpose and intent of the BMP. Potential stormwater
pollution is controlled through the use of BMPs. BMPs are generally divided into two categories:
• Baseline BMPs, which are general in nature (e.g., good housekeeping) and apply to
most NCDOT facilities
• Site -Specific BMPs, which pertain to a specific Facility (e.g., construction of a concrete
containment around an individual fuel tank)
DEQ and EPA 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, DEQ and EPA 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.
3.2 BASELINE BMPS
Baseline BMPs are practices that are generic and can be applied at most NCDOT facilities. The
Permit requires each Facility to address several baseline BMPs such as developing preventative
maintenance and good housekeeping programs.
3.2.1 Stormwater Pollution Prevention Training
The Permit requires that Facility personnel receive training on Permit and Plan compliance,
pollution prevention, and spill response. The Permit does not specify exact course content or
format. The Permittee can develop the training programs as it sees fit. It may provide the
training with in-house staff and resources, or it may contract with vendors to provide the
training.
3.2.2 Good Housekeeping Program
Good housekeeping is the preservation of a clean and orderly work environment that contributes to
overall Facility pollution control efforts. The implementation of this program may also include
some materials management practices as they relate to storage of drums and bench stock in the shop
areas. Adherence to the following practices will minimize the potential for stormwater pollution:
NCDOT Stormwater Pollution Prevention Plan

• Maintain dry and clean floors. Interior floors will be swept weekly, with residue placed
in designated waste disposal containers. Spills/drips/leaks will be cleaned promptly.
• Contaminated dry granular absorbents (e.g., "Speedi-dri") will be swept daily and
disposed of properly.
• Brooms, dust pans, and mops will be hung on racks for easy access and use.
• Trash will be picked up on a regular basis and disposed of properly.
• Catch basins and other inlets to the stormwater drainage system will be checked
regularly. Litter and trash will be removed and disposed of properly.
• Separate holding cans will be provided for oily rags as a fire prevention aid.
• The exterior grounds will be policed biweekly. Litter and other trash will be disposed of
properly. Scrap parts and empty drums will be removed from the Facility promptly.
Dumpsters and recycle bins will be covered to prevent rainfall from contacting the
container contents.
• All equipment will be visually inspected for leaks and other conditions that could lead to
a discharge of a pollutant.
• Hazardous substances will be stored in approved containers. The containers will be
stored in an area not exposed to stormwater. The containers will be located away from
direct vehicular traffic.
• Containers of liquids can be placed on spill containment pallets or racks to prevent
corrosion and contain leaks. Pallets will not be exposed to precipitation.
• Containers of chemicals and other compounds or mixtures will be labeled with name of
substance, stock number, expiration date, health hazards, safe handling requirements,
and first aid information. For each chemical substance used, a Material Safety Data
Sheet (MSDS) will be provided in areas accessible to personnel.
• Drums and tanks containing used oil must be labeled "USED OIL."
• Good housekeeping procedures will be included in the employee training program.
Regularly scheduled meetings will be held to discuss good housekeeping and pollution
prevention concepts.
• The good housekeeping checklist will be completed during each semiannual Facility site
inspection.
3.2.3 Preventative Maintenance Program
The Facility will regularly inspect and test Facility equipment and operational systems whose failure
has a potential to release pollutants into the stormwater drainage system. Inspections will reveal
conditions such as cracks or slow leaks that could cause breakdowns or failures resulting in
discharges of pollutants to the stormwater drainage system. The program will reduce breakdowns
and failures by making proper adjustments, repair, or replacement of equipment or parts.
NCDOT Stormwater Pollution Prevention Plan

Standard operating procedures include two specific preventative maintenance periods:
• Run-time preventative maintenance occurs daily during working hours as normal
operation of the equipment and machinery.
• Preventative maintenance at regularly scheduled intervals that involves inspections,
cleaning, and minor repairs.
The following items, if present at the Facility, are subject to periodic inspections as they have a
direct risk to stormwater. The Permit requires written documentation of scheduled inspections - use
Form 19 and place in the appropriate year tab.
• Fuel pumps: Items such as hoses, nozzles, electrical components, and gauges will be
checked for wear. Routine maintenance will adjust and replace items as needed. Fuel
pumps will be inspected once every six months.
• Oil pumps: Drip containment devices will be inspected for proper operation. Seals,
couplings, and valves will be inspected and replaced as needed. Oil pumps will be
inspected once every six months.
• Other pumps: These devices are subject to frequent inspection and maintenance that
includes lubrication, balancing, repacking bearings, and tightening of support bolts and
pipe connections. The pump manufacturers' recommendations will be followed. Other
pumps that handle hazardous substances with a reasonable potential to pollute
stormwater will be inspected once every six months.
• Mobile equipment: These machines will be inspected for leaking hydraulic fluids, fuel
lines, liquid asphalt, and lubricating oils. Mobile equipment will be inspected once
every six months.
• Secondary containment structures: These structures will be equipped with a locking
valve to control discharge. The valves will be locked in the closed position. Discharges
will be made in accordance with the Permit and other applicable regulations. The
inspector will observe the structural integrity, valve and lock operation, and look for
signs that the primary tank may be leaking. Exposed secondary containment structures
will be inspected once every six months.
• For those secondary containment structures without drain valves, rainwater disperses
through evaporation. The Permit does not require the installation of a drain valve where
none exists. However, accumulated residue must be removed and disposed of properly.
• Pipes and supply lines: Pressurized pipes that supply petroleum, oil, and lubricants
(POLs, or other hazardous substances) will be inspected once every six months. Special
attention will be made to supports, connectors, couplers, and valves.
• Other: Equipment used for recycling various compounds will be inspected and
maintained as directed by the original manufacturer. Other equipment that presents a
reasonable risk for stormwater pollution will be inspected once every six months.
Preventative maintenance also pertains to stormwater controls such as infiltration devices,
diversion structures, detention facilities, and other stormwater treatment systems. Stormwater
NCDOT Stormwater Pollution Prevention Plan

controls will be kept in proper operating condition. NCDOT's Highway Stormwater Program
(HSP) has implemented an Inspection and Maintenance Program for all structural stormwater
controls to ensure proper operation and pollutant removal efficiency.
3.2.4 Spill Prevention
Spill prevention and response information and procedures will be kept at the SPPT Leader's office
and at each shop location. The potential spill sources with high risk for contaminating stormwater
include the storage and handling of oil or hazardous substances and vehicle/equipment maintenance
activities. Accidents and careless handling during these activities can cause spilled liquids to enter
the stormwater drainage system. See Section 1.4.3 for spill response and reporting procedures.
Spill Prevention
Vehicles entering the Facility will be warned either verbally or with signage of aboveground piping
or other oil transfer operations. During transfer of fuel or delivery of hazardous substances to
Facility areas, the driver and handlers will be responsible for preventing spills. Upon arrival at the
Facility, the driver has the responsibility to inspect the tank truck for signs of leaks or unusual
conditions prior to entering the site. Loading or unloading will occur in approved locations only.
The driver will ensure that all hoses are secure and that proper absorbent materials (e.g., pads,
booms and socks) are available before unloading. Communications will be established between
the pumping and receiving stations, if applicable, and the remaining volume of the receiving
container will be verified prior to product transfer. Drivers will use chock blocks and/or a vehicle
break interlock system to prevent premature disconnect of their truck. During all fuel delivery
operations, the driver will remain with the vehicle at all times. Sufficient volume (approximately
10% of the total capacity) will be maintained in the container for thermal expansion. During all
loading and unloading operations, personnel will monitor tank levels using dipsticks, visual
observation or other approved method. Absorbent pads and booms are to be located near the fuel
delivery/ connection points. Drivers will visually inspect all valves and outlets for leakage when
transfer is complete.
3.2.5 On -site Contractor Responsibilities
Although NCDOT is ultimately responsible for pollutants that leave its site, NCDOT will make
it clear to all vendors entering the site that vendors will be responsible for the cost and effort to
clean up and remediate spills and other incidents caused by the vendor that create pollution
problems.
Fuel vendors have a high risk of creating a spill that could introduce gasoline or diesel fuel into
the stormwater drainage system. Vendors must observe all fuel and liquid deliveries, and be able
to respond immediately to a spill incident.
3.2.6 Industrial Activity Exposure
The Permittee will take reasonable measures to minimize the exposure of industrial activities to
precipitation and stormwater run-on. Measures include:
• Conducting industrial activities indoors or under cover;
NCDOT Stormwater Pollution Prevention Plan

• Storing materials and parts indoors or under cover;
• Diverting run-on away from the industrial activity area with berms, ditches, curbing,
and buffer strips; and
• Diverting runoff from industrial activity areas with appropriate runoff management
methods.
The Permit does not require that inert construction material such as wood posts, steel girders,
aggregate, or pipe be placed under cover.
3.2.7 Daily Observations
General walk-throughs of work areas should be conducted by the SPPT Leader, unit or shop
supervisor, or other designated personnel during normal daily duties. A written record is not
required for these daily observations; however, Section 1.4.2 describes the semiannual inspections
that do require written documentation. Particular attention should be paid to leaks, spills, and
properly operating equipment. Problems will be reported and corrected as soon as practical. The
following list will serve as a guide to critical items:
• Tanks and drums: observe for leaks, corrosion.
• Check secondary containment structures. Drains should be closed and locked.
• Lube trucks, asphalt distributors, landscape chemical distributors, paint trucks, and other
refueling trucks: observe for leaks, malfunctioning control valves.
• Look for unusual stains on walls, floors, and grounds.
• Look for deterioration of equipment foundations and anchorages.
• Check for and remove debris from stormwater drainage system inlets.
• Check for windblown materials or materials tracked by vehicles that can enter the
stormwater drainage system. Observe sand and salt storage bins.
• Note any unusual odors.
• Ensure that equipment is operating properly? Check for excessive noise, vibration, or
exhaust.
• Keep the work area in a clean and orderly manner. Practice good housekeeping.
• Inspect valves and pipelines. Look for deteriorating gaskets, supports, and loose valve
stems.
• Make sure all valves are in proper position.
• Look for leaking containers. Replace as necessary.
• Check for torn bags of dry materials or bags exposed to rainwater.
NCDOT Stormwater Pollution Prevention Plan

• Check that dry granular absorbents used to contain floor spills are properly cleaned up.
• Check condition of spill response kits and quantity of absorbent materials.
• Clear access to all safety equipment such as eyewashes, fire extinguishers, and spill kits.
• Clear access to emergency exit doors. Emergency exit doors must be kept unlocked
during all work hours.
Refer to Section 1.4.2 for semiannual SPPP and SPCC inspection requirements.
3.2.8 Scrap Material Storage and Salvage
NCDOT will maintain the existing program to minimize the quantity of scrap metals, scrap parts,
and unused vehicles and equipment stored at its facilities. Many of these items have a salvage
value and are sold through a bid process.
Remove scrap materials from the site promptly. Divert run-on away from scrap storage areas.
Divert runoff from scrap storage areas through a buffer strip, onto a level grassy area, or into a
grass berm. Minimize direct runoff into the stormwater drainage system with the use of buffer
strips or other runoff management devices.
Some items present a pollutant risk while they are stored on -site. For example, old tanks may
still contain residue. Rusting tanks introduce leached metals into the stormwater runoff.
Abandoned tanks will be emptied and cleaned, and removed from the site. Ensure scrap
materials are free from lubricants and loose paint to the extent practical. Ensure that salvaged
vehicle fuel tanks are empty and drips are contained.
Small scrap items such as automotive batteries will be stored indoors or under cover until they
are removed from the Facility.
3.2.9 HAZMAT Inventory Control
NCDOT will make an effort to reduce the variety of Hazardous Materials (HAZMATs) used and
the quantity stored at the facilities. A short list of selected products that meet NCDOT
performance standards can reduce purchase price, handling costs, disposal costs, and simplify
inventory.
The use of non -toxic products will reduce disposal costs and minimize risks to the environment.
The NCDOT is a large buyer and the prioritization of selecting products made from recycled or
reclaimed materials has several benefits, of which reducing risks to the environment is just one.
3.2.10 Vegetation Practices
Preserving existing vegetation or revegetating disturbed soil as soon as possible after construction is
the most effective way to control erosion.
NCDOT Stormwater Pollution Prevention Plan

Vegetation reduces erosion in multiple ways:
• Shields the soil surface from direct erosive impact of rain;
• Improves the soil's porosity and water storage capacity so more water can infiltrate into
the ground;
• Slows the runoff and allows sediment deposits; and
• Physically holds the soil in place with plant roots.
Vegetative buffers (e.g., grass filter strips, forested buffers) improve stormwater runoff quality by
reducing the rate of flow, trapping sediment and other pollutants, uptake of nutrients, and increasing
infiltration into the ground. The Facility should maintain buffers around the site perimeter to the
extent practical. Fencing, barriers, and signage should be used to help inform Facility personnel of
the location of perimeter buffers and other buffer zones along water bodies.
Vegetation cover can be grass, trees, shrubs, bark, mulch, or straw. Grasses are the most common
types of cover used for revegetation because they grow quickly and provide erosion protection
within days. Straw or mulch may be used during non -growing seasons to prevent erosion. Existing
shrubs and trees with established root systems should be protected to help prevent erosion.
Vegetation and other site -stabilization practices can be either temporary or permanent controls.
Temporary controls provide cover for exposed or disturbed areas for short periods of time or until
permanent erosion controls are put in place. Permanent vegetative practices are used when
disturbance activities are completed or when erosion is occurring on a site that is otherwise
stabilized.
3.2.11 Sediment and Erosion Control
Soils exposed to water, wind, or ice can have erosion and sedimentation problems. Sedimentation
occurs when soil particles are suspended in surface runoff or wind and are deposited in streams or
other water bodies. Construction and other ground surface disturbing activities can accelerate
erosion by removing vegetation, compacting or disturbing the soil, changing natural drainage
patterns, and covering the ground with impermeable surfaces (pavement, concrete, buildings).
When the land surface is impermeable, stormwater can no longer infiltrate, resulting in greater
amounts of water that can move more quickly across a site and can carry larger amounts of
sediment and other pollutants to streams and rivers.
Areas that are erosion -prone or where construction activity is occurring at the Facility will be
inspected regularly. Sedimentation and erosion control devices will be installed and maintained.
Areas that need immediate erosion repair include areas with such heavy activity that plants cannot
grow, soil stockpiles, stream banks, steep slopes, construction areas, demolition areas, and any area
where the soil is disturbed, denuded (stripped of plants), and subject to wind and water erosion.
There are several ways to limit and control sediment and erosion pollution:
• Leave as much natural vegetation and plants on -site as possible;
• Minimize the time that soil is exposed;
NCDOT Stormwater Pollution Prevention Plan

• Prevent runoff from flowing across disturbed areas - divert the flow to vegetated areas;
• Stabilize the disturbed soils as soon as possible;
• Slow down the runoff flowing across the site - use level spreaders or terraces;
• Provide check dams in drainage ways to decrease flow rates;
• Use grassy swales rather than concrete -lined channels; and
• Remove sediment from stormwater runoff before it leaves the site by allowing it to sheet
flow across vegetative buffers.
Using these measures to control erosion and sedimentation is an important part of stormwater
management. Selecting the best set of sediment and erosion prevention measures depends upon the
nature of the on -site activities and other local conditions. Refer to the North Carolina Sediment
Control Planning and Design Manual for additional details and information.
3.2.12 Management of Runoff
Management of runoff is the consideration of appropriate traditional stormwater management
practices (practices other than those which control the source of pollutants) used to divert, infiltrate,
reuse, or otherwise manage stormwater runoff in a manner that reduces pollutants in stormwater
discharges from the site. Procedures determined to be reasonable and appropriate must be
implemented and maintained. The potential of various sources at the Facility to contribute
pollutants to stormwater discharges from industrial activity must be considered when determining
reasonable and appropriate measures. Appropriate measures may include:
• Vegetated buffer zones (vegetated areas along Facility perimeter)
• Vegetated swales (vegetated depressions used to transport, filter, and remove sediment);
• Stormwater diversion devices (grass berms, curbing);
• Stormwater collection and reuse (such as for a process or as an irrigation source);
• Inlet controls (such as passive sediment interceptors);
• Snow management activities;
• Infiltration devices; and
• Wet detention/retention basins.
Many BMPs are measures to reduce pollutants at the source before they have an opportunity to
contaminate stormwater runoff. Traditional stormwater management practices can be used to direct
stormwater away from areas of exposed materials or potential pollutants. Traditional stormwater
management practices can be used to direct stormwater that contains pollutants to natural or other
types of treatment locations. For example, using grass berms to divert runoff away from storage
yards minimizes the pollutants leaving the site. The NCDOT Permit does not specify any one
stormwater management practice since these practices must be selected on a case -by -case basis,
depending on the activities and flow characteristics at the Facility.
NCDOT Stormwater Pollution Prevention Plan

3.3 SITE -SPECIFIC BMPS
3.3.1 On -site and Remote Refueling Operations
The Permit has requirements for the Facility to implement BMPs at on -site fuel stations, fuel
depots, and work sites that are located off -site but are under the control of this Facility. The
Facility conducts remote refueling activities during field maintenance and construction operations.
Some remote facilities have diesel fuel available for NCDOT trucks. The following BMPs can be
implemented to prevent or minimize contamination of stormwater runoff from fueling activities.
a) Instruct personnel to avoid "topping off' the fuel tanks.
b) Instruct drivers of lube trucks to remain with vehicle during entire fuel delivery process.
c) Provide drip pans at remote fueling locations and with lube trucks to collect small leaks.
d) Provide spill kits at remote fuel depots and with lube trucks.
e) Minimize outdoor refueling operations during times of heavy rainfall.
f) Provide secondary containment for lube trucks or fuel storage tanks used as a stationary
fuel point at remote work sites.
g) Do not park lube trucks or other tanker trucks storing oil in the vicinity of storm drains,
storm ditches or other stormwater conveyances.
Pipelines not in service will be capped or blank -flanged, and marked as to their origin. Pipe
supports are properly designed to minimize abrasion and corrosion, and to allow for expansion
and contraction. New buried metallic piping will have either a protective coating or cathodic
protection. New or repaired buried piping must undergo integrity and leak testing per industry
standards. In the event that piping is exposed during an excavation, the pipe will be inspected for
corrosion.
3.3.2 Spill Kits
Complete and adequate spill kits should be positioned in easily accessible locations near the
hazardous substance storage area(s) at the Facility. Facility personnel should know the location
of and have access to all Facility spill kits. Spill kits will be utilized by Facility personnel for both
minor and major spill incidents. The spill kit(s) should have sufficient absorbents to contain a
spill from the largest container within the hazardous substance storage area.
Absorbent pads will be located at equipment shops, oil changing and lube bays, and any building
where 55-gallon drums are stored. Two types of commercially available spill kits are listed
below (Note: Non-commercial spill kits such as granular absorbent, shovel or broom, and an
empty drum can be utilized as well. NCDOT has also developed their own standard spill kits.
For more information, refer to the NCDOT Resources listed in Figure 1 or contact your Division
Point of Contact):
Standard spill kits will consist of spill response equipment sufficient to control and
contain a 55-gallon spill of POL. A typical standard spill kit consists of the following:
• 30 booms (3 inch diameter x 4 feet long)
• 30 two -liter pillows
• 75 absorbent pads (18-inch square)
NCDOT Stormwater Pollution Prevention Plan

• 15 pounds of dry granular absorbent
• 24 disposal bags
• 8 pair nitrile gloves
• 2 pair goggles
• 4 sets of extra -large Tyvek® coveralls
• 1 non -sparking shovel
• plastic container to hold items
2. Small spill kits will consist of spill response equipment sufficient to control and contain
a 25-gallon spill of POL. A typical small spill kit consists of the following:
• 15 booms (3 inch diameter x 4 feet long)
• 15 two -liter pillows
• 40 absorbent pads (I8-inchsquare)
• 10 pounds of dry granular absorbent
• 12 disposal bags
• 4 pair nitrite gloves
• 2 pair goggles
• 2 sets of extra -large Tyvek® coveralls
• 1 non -sparking shovel
• plastic container to hold items
Each Facility should have at least one 85-gallon overpack drum, or similar containers, for holding
contaminated materials (e.g., soil, booms) prior to disposal.
Following a spill cleanup, the items used from the spill kit must be replenished as soon as possible.
3.3.3 Vehicle and Equipment Cleaning Areas
The point source discharge of vehicle and equipment washwaters, including tank cleaning
operations, is not authorized by NPDES Permit NCS000250 and must be covered under a
separate NPDES general or individual permit or discharged to a sanitary sewer in accordance with
applicable local industrial pretreatment requirements.
The SPPT Leader must ensure that all washwater discharges are in accordance with the Permit. If
a sanitary sewer system is not available to the Facility and cleaning operations take place outdoors,
the cleaning operations must take place on level grassed or graveled areas to prevent point source
discharges of the washwater into storm drains or surface waters. 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 cleaning
activities. Any excess ponded water shall be removed and properly handled by pump to a sanitary
sewer system prior to removing the drain cover.
NCDOT Stormwater Pollution Prevention Plan

Ideally, washwater from cleaning activities should be discharged into a sanitary sewer system.
NCDOT is currently working toward connecting indoor and outdoor wash stations to sanitary
sewer where it is available. The Facility shall adhere to the BMPs described in the Vehicle and
Equipment Cleaning Guidance (available through Environmental Operations, Roadside
Environmental Unit) to help prevent or reduce the discharge of pollutants during
vehicle/equipment cleaning operations.
Although there are many different vehicle/equipment cleaning scenarios, the following BMPs are
common to most and should be implemented:
• Cleaning area shall be well -marked with signs indicating where and how cleaning is
to be done.
• Detergents, if used, shall be biodegradable and the pH adjusted to be in the range of 6
to 9 standard units.
• Oil changes and other engine maintenance shall not be conducted in the designated
cleaning area. These activities shall be conducted in a place designated for oil change
and maintenance activities.
• Routine maintenance of the oil/water separator (OWS) and sediment chamber shall be
provided on a regular basis consistent with the manufacturer's recommendations.
Maintenance procedures should be included on signs that outline the cleaning
procedures.
If the rinse/wash pad is connected to sanitary sewer, the Facility shall comply with the local
Publicly Owned Treatment Works (POTW) pretreatment, monitoring, and permit requirements
for washwater discharged to the sanitary sewer. Rinse/wash pads should be placed within an
enclosed structure equipped with an OWS and sediment chamber.
• If the rinse/wash pad is outdoors and discharges to a sanitary sewer, the Facility shall
consider covering the wash pad when not in use, installing a canopy to prevent
rainwater from reaching the wash pad, or installing diverter valves.
If a sanitary sewer connection is not available, the rinse/wash pad should be constructed of
gravel, and the washwater discharge must disperse to a vegetative buffer to avoid creating a non -
allowable point source discharge.
• Washwater generated from rinse/wash pads shall not be allowed to discharge directly
into surface waters or the storm drainage system. Alternatively, the washwater
should be:
■ recycled;
■ collected and hauled away for treatment;
■ evenly dispersed through a vegetative buffer and allowed to soak into the
ground and/or evaporate; or
■ treated by some other equivalent measure before it enters surface waters or
the storm drainage system.
NCDOT Stormwater Pollution Prevention Plan

kir
3.3.4 Oil/Water Separators
Oil/water separators (OWSs) require frequent and intense maintenance to operate properly.
OWSs are designed to trap oil and other pollutants that float on the surface of water. The
introduction of unauthorized detergents, acids, heavy pollutants, and soluble materials may
render the OWS ineffective. OWSs associated with vehicle and equipment maintenance
operations are typically not designed to treat stormwater; large flows through OWSs cause the oil
to bypass the separation chamber.
OWSs should not discharge to the same septic tank to which domestic waste discharges. Oil that
bypasses the OWSs can cause a septic tank to malfunction.
Under NPDES Permit No. NCS000250 issued to NCDOT, OWSs that discharge to the
stormwater drainage system are illicit. The Facility has three options for correcting these illicit
connections:
1. Obtain an individual NPDES Permit for the discharge from oil/water separators. This
involves submitting a permit application to DEQ and then complying with the Permit.
The Facility can contact DEQ for additional information.
2. Reroute the OWS discharge to a nearby sanitary sewer system. Local municipalities
require notification and operational limits for connected OWSs. The Facility can
contact the local municipal pretreatment coordinator for additional information.
3. Plug and abandon the OWS. This option may not be feasible if the OWS is needed to
remove oil from industrial discharges.
OWSs that remain in service require regular maintenance and removal of accumulated oily
sludge and grit. The SPPT should refer to the vendor's literature for maintenance requirements.
Sediment chambers/traps associated with vehicle and equipment wash pad OWSs also require
frequent maintenance and removal of accumulated sediment in order for the OWSs to operate
properly. Accumulated sediment must be properly removed, stored, reused, and/or disposed.
3.3.5 Secondary Containment
The Permit requires that secondary containment be provided for bulk storage, storage of water
priority chemicals, and hazardous substance storage. Refer to Emergency Planning and
Community Right -to -Know Act (EPCRA) Section 313 of Title III of the Superfund Amendments
and Reauthorization Act (SARA) for a list of water priority chemicals. Secondary containment
can take many forms, depending on the types and quantity of containers, exposure to
precipitation, and operation criteria.
If the Facility uses 55-gallon drums that contain SPCC-regulated materials, they will be located as
depicted on the Site Plan (Figure 4). Empty drums are stored in various areas while awaiting
removal. Secondary containment should be provided for the following HAZMAT storage areas:
• At ASTs, including ASTs containing liquid calcium chloride, liquid brine, fuels, used
oil, and heating oil;
NCDOT Stormwater Pollution Prevention Plan

• Where non -empty 55-gallon drums are stored;
• Where drums or other containers are used as dispensing units within workshops;
• Where paint, solvents, and thinners are stored;
• Where POLs are stored;
• Where liquid pesticides and herbicides are stored; and
• Where other liquid hazardous substances are stored.
For ASTs exposed to precipitation, the secondary containment should be constructed of
impervious materials such as poured -in -place concrete. The volume of secondary containment
should equal the volume of the largest AST within the containment plus freeboard for the 25-
year, 24-hour storm event (approximately 8 inches for most of North Carolina). Refer to
Appendix C for guidance. If a drain valve is provided, the valve must have a lock and remain
closed except when making a controlled release of uncontaminated rainwater. A roof over the
containment will minimize accumulated rainwater. Other options for ASTs include:
• Provide prefabricated tanks with integral secondary containment and rain shed.
• Provide double -wall tanks.
The Facility has several options for storing containers in sizes up to 55 gallons (e.g., buckets,
jerricans, drums):
• Store containers inside a prefabricated metal HAZMAT storage building with integral
secondary containment.
• Use the existing building and provide a built-up curb or berm at the doorway
threshold. Install a ramp to provide access for drums and to prevent trips.
• Use the existing building and place a spill blocker across the doorway threshold.
• Use the existing building and provide spill containment pallets for the containers.
• Build a depressed concrete slab with curbing and a shed roof.
• Store small containers within a self-contained flammables cabinet.
Secondary containment that is not exposed to precipitation should have a volume equal to 110%
of the largest container within the secondary containment device.
Refer to Section 1.4.7, Releases from Secondary Containment Structures, for guidance on how to
manage controlled releases.
Liquid asphalt ASTs are covered by SPCC regulations; however, EPA guidance stipulates that
these ASTs are subject to less stringent design criteria for secondary containment. Thus while
new oil storage tanks must generally use liners or double bottoms under tanks, this requirement
does not apply to highly viscous products such as liquid asphalt. While secondary containment
NCDOT Stormwater Pollution Prevention Plan

provided around liquid asphalt tanks must have the specified capacity, it does not need to have
the same degree of imperviousness as required for other oil products. EPA guidance allows
NCDOT flexibility in the design of liquid asphalt secondary containment systems as long as they
are sufficiently impervious to liquid asphalt. An effective means of secondary containment may
therefore involve surrounding the AST with a concrete block dike or earthen berm that will
contain a discharge of hot liquid asphalt (and precipitation) until it can cool off, solidify, and be
removed before it reaches navigable waters or adjoining shorelines.
3.3.6 Hazardous Materials Storage and Management
For purposes of this document, the term "hazardous material" includes hazardous substances
defined by EPA, hazardous materials defined by federal DOT rules, regulated hazardous wastes,
non -regulated wastes, and any other material or substance that is a reasonable potential
stormwater pollutant.
The Facility has the following options for hazardous materials storage:
a) Store hazardous materials indoors within secondary containment.
b) Store hazardous materials outdoors under cover and within secondary containment.
c) Store hazardous materials in prefabricated HAZMAT storage building with integral
secondary containment.
d) Store small hazardous material containers in a flammables cabinet with integral
secondary containment.
Provide a spill kit near or at locations where HAZMATs are stored. A spill kit will consist of
absorbent pads, booms, and dry granular absorbents in sufficient quantity to contain a spill from
the largest container at that storage location. Non -sparking shovels should be provided to aid in
cleaning up the spill. Provide a container for disposing of the used absorbents. See Section 3.3.2
for additional information.
Ensure that hazardous material containers are labeled properly. Labels will help the employee
handle and use the material safely and respond to spills efficiently. Labeling is regulated under
other environmental laws. The SPPT should contact NCDOT resources listed in Figure 1 for
assistance with proper labeling requirements.
Active ASTs should be labeled with the contents, capacity, hazard, and an emergency phone
number.
3.3.7 Hazardous Waste Storage and Management
Each work area that generates hazardous waste will designate a satellite accumulation point,
which will meet the requirements specified in 40 CFR 262.34.
The Facility has the following options for hazardous waste storage:
a) Store hazardous waste indoors within secondary containment.
NCDOT Stormwater Pollution Prevention Plan

b) Store hazardous waste outdoors under cover and within secondary containment.
c) Store hazardous waste in prefabricated HAZMAT storage building with integral
secondary containment
d) Store small hazardous waste containers in a flammables cabinet with integral
secondary containment.
Provide a spill kit near or at locations where hazardous wastes are stored. A spill kit will consist
of absorbent pads, booms, and dry granular absorbents in sufficient quantity to contain a spill
from the largest container at that storage location. Non -sparking shovels should be provided to
aid in cleaning up the spill. Provide a container for disposing of the used absorbents. See
Section 3.3.2 for additional information.
Ensure that hazardous waste containers are labeled properly. Labels will help the employee
handle and use the material safely and respond to spills efficiently. Labeling is regulated under
other environmental laws. The SPPT should contact NCDOT resources listed in Figure 1 for
assistance with proper labeling requirements.
3.3.8 Salt and Sand/Salt Mixture Storage
One of the most effective controls to minimize the amount of salt lost to runoff is proper storage.
Providing cover for salt and sand/salt mixture storage areas reduces salt loss from stormwater
runoff. Additionally, salt and sand/salt mixture storage piles should be located outside of
floodplains to further protect against surface water contamination. The Facility has the following
options for minimizing stormwater pollution from salt and sand/salt mixture storage and mixing
areas:
a) Provide cover for salt and sand/salt mixture storage areas (e.g., salt dome, salt shed,
or covered bin). A structure with a permanent constructed roof is preferable to
tarpaulins or temporary roof structures.
b) Divert run-on away from the salt or sand/salt mixture storage and mixing areas.
c) Minimize direct runoff from the salt or sand/salt mixture storage area into the
stormwater drainage system with the use of straw bales, bump diverters, curbed
containment, or other runoff management devices.
d) Slope pavement where sand/salt mixture and loading operations are conducted toward
the salt or sand/salt mixture storage shed, as applicable.
e) Practice good housekeeping to eliminate spillage of salt or sand/salt mixture in non -
covered areas and sweep salt and sand/salt mixture residue into covered storage areas.
(1) Sweeping of residue should be performed at the end of each precipitation
event or significant sand/salt mixing/loading operation.
(2) At the end of each winter season, inspect salt and sand/salt storage areas to
determine whether additional sweeping and material covering is required to
ensure that salt and sand/salt mixture residue is properly covered and
contained throughout the non -winter seasons.
NCDOT Stormwater Pollution Prevention Plan

(3) Provide temporary cover using tarpaulins for any temporary salt or sand/salt
mixture storage piles stored on -site at the beginning of each winter season.
The Facility has the following options for minimizing stormwater pollution from bulk liquid
anti-icing/deicing chemical storage tanks and mixing areas:
a) Provide secondary containment for bulk liquid anti-icing/deicing chemical storage
tanks (e.g., calcium chloride, liquid brine). See Section 3.3.5 for additional
information related to secondary containment.
b) Divert run-on away from the storage and mixing areas.
c) Install sump pump in the mixing area to contain any spilled chemical.
d) Use chemical alternatives (e.g., chemicals with lower concentrations of chloride).
e) Practice good housekeeping to eliminate spillage of chemicals on the ground surface.
3.3.9 Illicit Connections and Improper Discharges Elimination
Illicit connections include direct pipe or other conveyance tie-ins to the stormwater drainage
system. Improper discharges include the dumping of non -permitted non-stormwater materials
into the stormwater drainage system.
Floor drains that connect to the stormwater drainage system are illicit connections that provide
an avenue for an improper discharge. Floor drains connected to the stormwater drainage system
must be plugged. Personnel must be instructed not to pour non-stormwater materials into catch
basins, drop inlets, ditches, and other portions of the stormwater drainage system.
Floor drains that are connected to an oil/water separator or other stormwater treatment device
may be allowed if pollutants do not bypass the treatment device. Refer to Section 3.3.4 for the
proper operation of OWSs.
Floor drains that are connected to the sanitary sewer system will be identified and marked.
Personnel will be trained to pour, dump, or place nothing in these floor drains that could cause an
upset to the sanitary sewer system. The entry of POL, paint, solvent, and landscape chemicals
into the sanitary sewer system may upset the system. Follow the manufacturer's instructions for
the dilution of janitorial cleaning compounds before discharging into the sanitary sewer system.
Hand sinks that discharge to the ground or stormwater drainage system are illicit connections.
These hand sinks must be rerouted to the sanitary sewer system. Label hand sinks with
instructions prohibiting the entry of hazardous substances.
3.3.10 Contaminated Soil Removal
Contaminated soil can cause stormwater runoff pollution problems. Where spills of POLs or
other hazardous materials are excessive and are causing pollutants to enter the stormwater
drainage system, remediation may be necessary. A description of soil remediation methods is
beyond the scope of this document. The SPPT should contact NCDOT resources listed in
NCDOT Stormwater Pollution Prevention Plan

Figure 1 for assistance with contaminated soil removal and disposal. Beware that a hazard
characterization of removed soil may be required before disposal.
The SPPT will not remove contaminated soil until authorized by the Division Engineer. For
recent spills and areas near traffic, barricades may be erected to minimize tracking of the
contaminated soil from the site.
3.3.11 Underground Storage Tank Evaluation
Underground storage tanks (USTs) used to store POLs or other hazardous substances have the
potential to contribute to stormwater runoff pollution during refueling operations or through tank
leaks into the subsurface soil or groundwater system. USTs located at NCDOT Facilities are
either active, inactive, or abandoned. The status of USTs should be evaluated to ensure the tanks
are meeting current UST regulations and NCDOT requirements. Most USTs will not be covered
by this Plan because they are regulated by 40 CFR 280 or 281. There are specific USTs that are
exempt from 280 and 281, including USTs storing fuel for comfort heat and USTs that are 110-
gallons or less. These USTs are covered by the SPCC regulations and must be managed
accordingly.
USTs that are regulated by the SPCC rule must comply with the requirements in Section 4 and
USTs covered by 40 CFR 280 or 281 are described in the narrative in Section 2.
For active USTs: Make sure that the tanks meet current standards for construction and leak
detection. Ensure that proper filling procedures are followed to minimize the potential for spills
to the ground surface.
For inactive (or unneeded) USTs: USTs that are unneeded at the Facility can be closed or
removed from the site.
For abandoned USTs: Abandoned tanks should be empty and either properly closed or removed
from the site.
3.4 ADDITIONAL BEST MANAGEMENT PRACTICES
Additional BMPs may include such directives as "repair a specific secondary containment
structure" or "remove a specific illicit connection." This type of directive is unique to this
Facility and may require additional effort by the SPPT. The description in Table 3-1 is specific
as to "what" needs to be done. The "how" will be determined by the SPPT.
NCDOT Stormwater Pollution Prevention Plan

SECTION 4
SPILL PREVENTION CONTROL AND
COUNTERMEASURE PLAN
NCDOT Spill Prevention Control and Countermeasure Plan

40 CFR 112 CROSS REFERENCE TABLE
Final
SPCC Rule
Description of Section
SPPP/ SPCCP
Section
112.3 d
Management/PE certification
Form 21
112.3 e
Facility maintains copy of plan
4.1
112.4 a
Submittal requirements to the regional administrator
4.2.2
112.5 a
Updating requirements
4.2.1
112.5 b
Plan reviewed at least once every five years
4.2.1
112.5 c
PE certifies technical amendments
4.2.1
§ 112.7
Cross reference table to the parts of the regulation
40 CFR 112 Cross
Reference Table
112.7
Facility management signature
Form 21
§ 112.7(a)(1,2)
Conformance with the regulations, details on equivalent
environmental protection
4.2.3
§ 112.7(a)(3)
Plot plan showing the location and contents of each container,
exempted USTs, and direction of stormwater flow:
i. - oil storage inventory
ii. - discharge prevention measures
iii. - discharge or drainage controls
iv. - countermeasures for discharge recovery
v. - methods of disposal for recovered materials
vi. - emergency contact list and phone numbers
Figure 4
Table 4-1
4.3.83.3.5, 4.3.6
4.2.4
3.3.
Section 1.43, Table 1-1
and Form 25
112.7 a 4
Discharge reporting responsibilities
4.2.4, Form 26
112.7 a 5
Discharge emergency response procedures
4.2.4
112.7 b
Potential discharge from equipment failure
4.3.1
112.7 c
Secondary containment and/or diversionary structures
3.3.5, Table 4-1
112.7 d
Contingency lannin
4.3.8
112.7 e
Inspections, tests and records
4.3.3 Forms 23 and 24
112.7 1
Personnel training program requirements
4.3.4
112.7 2
Accountability for discharge prevention
4.3.4
1 12.73
Annual discharge prevention briefing
4.3.4
112.7
Security
2.3 4.3.5
112.7 h
Tank truck loading/ unloading
4.3.8
112.7 i
Brittle fracture evaluation requirements
4.3.9
112.7 '
Conformance with State requirements
4.2.3
112.8 b
Facility drainage
2.4, 3.2.13
112.8 c 1
Bulk storage containers are compatible with material stored
4.1.1
112.8 c 2
Bulk storage containers have appropriate secondary containment
3.3.5, Table 4-1
112.8 c 3
Require ents for drainage of diked areas
1.4.8, 4.3.6
112.8 c 4
Cathodic protection for buried tanks
4.3.9
§ 112.8(c)(6)
Inspections and integrity testing for aboveground containers, piping,
and support equipment
4.3.3, Table 4-3
112.8 c 7
Monitor internal steam heating coils
4.3.9
§ 112.8(c)(8)
Fail-safe engineering for tank systems, including high level alarm
re uirements
4.3.8
112.8 c 9
Observe effluent treatment facilities
N/A
112.8 c 10
Correct visible discharges
4.3.3
112.8 c 11
Appropriate osition of mobile oil containers
4.1.1
112.8 d
Facility transfer operations, pumping, and Facility process
4.3.9
112.20
Certification of substantial harm criteria
1.4, Form 22
NCDOT Spill Prevention Control and Countermeasure Plan

4.0 SPILL PREVENTION, CONTROL, AND COUNTERMEASURE
4.1 INTRODUCTION
The Oil Pollution Prevention regulations (Federal Regulations 40 CFR Part 112 - Oil Pollution
Prevention) administered under the authority of the United States Environmental Protection
Agency (EPA), require certain facilities to prepare and implement a Spill Prevention, Control,
and Countermeasure (SPCC) Plan in order to reduce or eliminate oil discharges to navigable
waters of the United States. SPCC Plans document regulated containers at a Facility in addition
to the inspection, testing, and maintenance procedures for those containers. The SPCC Plan also
contains information regarding emergency response actions.
The Facility -wide aboveground oil storage capacity for the Facility totals more than 1,320
gallons, and oil discharges could potentially reach navigable waters. For these reasons according
to 40 CFR 112.1, the Facility must prepare an SPCC Plan. The purpose of Section 4.0 is to meet
the SPCC Plan requirements. Aboveground tanks, underground tanks, mobile containers and
portable fueling facilities have been reviewed for the purpose of inclusion in the Plan, as
applicable. This Plan has been prepared in accordance with standard engineering practices and
applicable industry standards. A copy of this Plan and all amendments is maintained at the
Facility.
The status of USTs should be evaluated to ensure the tanks are meeting current UST regulations
and NCDOT requirements. Most USTs will not be covered by this Plan because they are
regulated by 40 CFR 280 or 281. There are specific USTs that are exempt from 280 and 281,
including USTs storing fuel for comfort heat and USTs that are 110 gallons or less. These USTs
are covered by the SPCC regulations and must be managed accordingly and included in the
Table below.
40 CFR 112.20(f) requires that affected facilities determine their potential for Substantial Harm.
As required by 40 CFR 112.20(f), the Certification of the Applicability of the Substantial Harm
Criteria will be documented using Form 22, which is available on the SPPP/SPCC website.
4.1.1 Oil Storage System Description
A plot plan of the Facility indicating the location of aboveground storage tanks, underground
tanks, mobile and portable container storage areas, equipment, and buildings is presented in
Figure 4. Section 2.2 describes the containers per Facility shop, building, or area. Contents and
capacities of SPCC-regulated oil containers are presented in Table 4-1. Tanks are compatible
with the material stored.
NCDOT Spill Prevention Control and Countermeasure Plan

Table 4-1. SPCC-Regulated Containers
Building
Container ID
Product
Secondary
Capacity
Is Bottom
Number
Stored
Containment(gallons)
Visible
Storage Yard
AST-1
CRS-2
Concrete
7000
Yes
Dike
Storage Yard
GEN-1
Diesel Fuel
Double-
84
Yes
Walled
Storage Yard
GEN-2
Diesel Fuel
Double-
60
Yes
Walled
Asphalt
Spill
Building 11
AST-9
Release
Containment
440
Yes
Agent
Pallet
Building 17
AST-5
Used Oil
Double-
1000
Yes
Walled
Building 17
DRUM-6
Engine Oil
Building
550
Yes
Building 17
DRUM-7
Hydraulic
Building
220
Yes
Fluid
Building 17
DRUM-8
Transmission
Building
55
Yes
Fluid
Building 43
DRUM-10
Antifreeze
Building
55
Yes
Spill
Building 11
DRUM -I I
Waste CRS-2
Containment
110
Yes
Pallet
Storage Yard
DRUM-12
Diesel Fuel
Concrete
55
Yes
Dike
NCDOT Spill Prevention Control and Countermeasure Plan

This Facility uses drums and portable totes with a storage capacity of 55 gallons or greater that
may contain SPCC-regulated materials. Locations of portable containers storage areas are
shown on Figure 4 and/or are described in Section 2.2. The Facility is implementing a policy to
manage oils stored in these types of containers to prevent spills and discharges. This drum
policy requires that all portable containers have secondary containment. This secondary
containment may include the use of spill kits and spill pallets, diked storage areas, and/or storing
containers inside a building with no spill route to navigable waters. Secondary containment is
required when containers covered under this policy are stationary and not in use. This includes
providing some type of containment for tanker trucks, which may be addressed by using
equivalent environmental protection measures such as berms, diversionary structures, spill kits,
etc.
4.1.2 Mobile Containers
Lube trucks and any other tanker trucks or distributors that store petroleum products and that are
parked at the facility overnight must be parked in an area of the facility that provides appropriate
containment and/or diversionary structures or equipment designed to prevent discharged oil from
reaching surface waters. These mobile storage tanks should be parked away from storm drains,
storm ditches, or other stormwater conveyances. One of the following preventive systems or its
equivalent should be used as a minimum:
(i) Dikes, berms, or retaining walls sufficiently impervious to contain spilled oil;
(ii) Curbing;
(iii) Culverts, gutters, or other drainage systems;
(iv) Weirs, booms, or other barriers;
(v) Spill diversion ponds;
(vi) Retention ponds; and/or
(vii) Sorbent materials.
If the PE sealing this Plan determines that the installation of structures or equipment listed above
to prevent discharged oil from reaching surface waters in the area is not practicable, the PE
should clearly demonstrate such impracticability and provide the following:
• A strong oil contingency plan following the provision of 40 CFR part 109; and
• A written commitment of manpower, equipment, and materials required to
expeditiously control and remove any harmful quantity of oil discharged.
4.1.3 Containers Not Covered By this Plan
Any oil containers with a capacity less than 55 gallons are exempt under Section 112.1(d)(5) of
the SPCC regulations, effective August 16, 2002. Also, the definition of "bulk storage
container" (in § 112.2) excludes oil -filled electrical equipment. Therefore, secondary
containment (§ 112.7) is applicable to the transformers, but secondary containment with
"sufficient freeboard to contain precipitation" (§ 112.8(c)) is not.
Permanently closed oil storage containers are also exempt from SPCC regulations, which are
defined as any container or facility from which (1) all liquid and sludge has been removed from
NCDOT Spill Prevention Control and Countermeasure Plan

each container and connecting line; and (2) all connecting lines and piping have been
disconnected from the container and blanked off, all valves (except for ventilation valves) have
been closed and locked, and conspicuous signs have been posted on each container stating that it
is a permanently closed container and noting the date of closure.
Additionally, hot -mix asphalt and hot -mix asphalt containers as well as pesticide application
equipment and related mix containers are exempt under the amended SPCC rules, effective
January 14, 2010. EPA believes that hot -mix asphalt is unlikely to flow as a result of the
entrained aggregate, so that it is unlikely to reach navigable waters or adjoining shorelines. EPA
continues to regulate asphalt cement, asphalt emulsions, and cutbacks, which are not hot -mix
asphalt. EPA also indicated that containers used to store pesticide formulations that contain oil
(e.g., crop oil or adjuvant oil) continue to be regulated under the SPCC rule.
4.2 GENERAL PLAN REQUIREMENTS
4.2.1 Owner's Review and Plan Amendments
The Facility owner or operator shall amend the SPCC Plan whenever there is a change in Facility
design, construction, operation or maintenance that materially affects the Facility's potential for
the discharge of oil. Examples of changes that may require amendment of the Plan include, but
are not limited to: commissioning or decommissioning containers; replacement, reconstruction,
or movement of containers; reconstruction, replacement, or repair of piping systems;
construction or demolition that might alter secondary containment structures; changes of product
or service; or revision of standard operation or maintenance procedures at a Facility. Movement
of containers within an area that does not increase the potential for a discharge would not require
an update to the Plan.
The Facility owner or operator shall complete a review and evaluation of the SPCC Plan at least
once every five years. Form 7 is used for such reviews. If there are any technical amendments
to the Plan, a PE must recertify the Plan. Form 8 is used to document that the amendments have
been completed. Technical amendments include changes to the Plan that require engineering
practice such as including physical modifications or changes in Facility procedures. If the
changes are non -technical in nature (e.g., contact name, phone number, container identification
number, etc.), then the Facility owner may recertify the Plan and indicate that no technical
changes were made. This Plan must be amended within six months of the review if more
effective, field -proven prevention and control technologies that would significantly reduce the
likelihood of a discharge are available at the time of the review. Amendments to this SPCC Plan
should be fully implemented as soon as possible, but no later than six months after changes occur
or after the review period. In addition to these conditions, it is recommended that the SPCC Plan
be amended if procedural or control system failures result in releases, as this would indicate
deficiencies in the existing SPCC Plan.
4.2.2 EPA Region IV Report
A report must be submitted to the US EPA Region IV office only if the Facility has discharged to
water:
• More than 1,000 gallons of oil in a single discharge, or
NCDOT Spill Prevention Control and Countermeasure Plan

• More than 42 gallons of oil in each of two discharges, occurring within any consecutive
twelve-month period.
40 CFR 112.4(a) lists the information that must be submitted to the US EPA Regional
Administrator within 60 days if either of the above thresholds is reached. This required information
is also detailed on Form 26, which is available on the website. The Regional Administrator may
require that personnel submit the Plan for review.
The required information must be submitted to the following EPA address:
The Regional Administrator
U.S. Environmental Protection Agency, Region IV
61 Forsyth Street SW
Atlanta, GA 30303-3104
A complete copy of all of the above information provided to the EPA Regional Administrator
shall also be sent at the same time to NCDENR at the address presented below:
North Carolina Department of Environment and Natural Resources
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Additionally, a copy of all information provided to EPA and NCDENR will be retained with this
Plan at the Facility.
4.2.3 Conformance with Federal and State Regulations
This Plan is in conformance with applicable Federal, State, and local regulations. The main
purpose of Section 4 of this Plan is to comply with the requirements of 40 CFR 112.
The following spill scenarios will be reported to NCDENR - Division of Water Quality in
accordance with North Carolina's Oil Pollution Act, § 143-215.85(a) and (b).
If the petroleum discharged, released or spilled is:
• 25 gallons or more, or
• Causes a sheen on nearby surface water, or
• Is 100 feet or less from a surface water body,
then the person owning or having control over the oil must immediately take measures to collect
and remove the discharge, and report the discharge to NCDENR within 24 hours of discharge,
and begin to restore the area affected by the discharge.
If the petroleum released or spilled is:
• Less than 25 gallons, and
• Does not cause a sheen on nearby surface water, and
• Is more than 100 feet from all surface water bodies,
NCDOT Spill Prevention Control and Countermeasure Plan

then the person who owns or has control over the oil must immediately take measures to collect
and remove the discharge.
If a spill or release cannot be cleaned up within 24 hours of the discharge or causes a sheen on
nearby surface water, the person must immediately notify NCDENR. If the petroleum released
or spilled in any circumstance does not meet one of the above requirements, or is not permitted
by GS 143-215.1, or it is not pursuant to a rule adopted by the Environmental Management
Commission or a regulation of EPA, it must be reported to NCDENR immediately.
Telephone numbers are contained in Form 25, which can be generated from the SPPP website.
Oil contained inside a containment area does not have to be reported.
4.2.4 Spill Response and Reporting
The success of any spill control and clean-up operation is often determined by the initial actions
of the person discovering the spill. While this person will seldom be equipped to perform any
clean-up procedures, she/he can and will initiate primary containment procedures to limit the
impact of the spill. Such action will include securing the area to prevent additional
contamination.
Spill Response
All spills must be reported to the SPPT Leader or their designated representative immediately. The
SPPT Leader or their representative directs all response, cleanup, notification, and disposal
efforts. Table 1.1 and Form 25 contain the telephone numbers for agencies and companies that
the SPPT Leader may need to contact in the event of a spill. Copies of Form 25 should be posted
near Facility telephones.
Facility personnel trained in spill response provide initial response to spills. In the case of large
volume spills, this Facility will request aid from the local Fire Department and other appropriate
emergency response agencies may be contacted for assistance with large volume spills. (See Table
4.2 — Oil Spill Response, Reporting and Cleanup below). Warning signs placed at fuel stations,
bulk storage tanks, or other refueling areas should contain emergency telephone numbers to aid in
quick response. Fuel Stations that operate 24-hours a day should post warning signs with 24-hour
emergency telephone numbers. Also, refer to the Spill Contacts table in Section 1.4.3 of this Plan
for guidance.
Minor spills can be absorbed with dry granular absorbents, pads, booms or socks. Many liquid
hazardous substances stored at the Facility are used inside buildings and are otherwise not normally
exposed to the storm drainage system. Small spills can be controlled by sweeping or mopping the
spilled material into approved containers for proper disposal. Proper disposal includes removing
used absorbent compounds from the floor on a timely basis.
In the event a spill reaches the storm drainage system or waters of the State, Facility personnel
will respond to the spill to expedite containment, and the SPPT Leader will notify the appropriate
spill response personnel (emergency response contractor or local Fire Department) for spill
NCDOT Spill Prevention Control and Countermeasure Plan

containment and/or cleanup. If a fire or security problem associated with a discharge arises, the
Police and Fire Department shall be immediately contacted at 911 for emergency assistance.
This Facility does not use any extremely hazardous substances, but certain precautions regarding
other materials are necessary. Spills that occur outside on vehicle parking lots or equipment storage
lots where there is no secondary containment will be immediately addressed with appropriate spill
response equipment and procedures. Necessary measures will be taken to prevent soil
contamination and to prevent any spills from reaching the stormwater drainage system.
In general, there are four basic steps that are to be taken to control pollution that can result from a
spill:
1. Stop the spill at the source.
2. Contain the spill.
3. Collect the spilled material.
4. Dispose of the spilled material and subsequent contaminated material properly and legally.
Steps 3 and 4 should only be undertaken by personnel that are properly trained in spill response and
cleanup. Table 4-2 summarizes oil spill response, reporting, and cleanup.
Table 4-2. Oil Spill Response, Reporting and Cleanup
Spill Volume
Response
Reporting
Cleanup
Any amount on -site
Facility Personnel
SPPT Leader
Sorbent Material, Pads
25 gallons, or sheen, or
Facility Personnel
SPPT Leader,
Sorbent Material, Pads
< 100 feet from water
NCDENR
Greater than 1,000 gallons
Facility Personnel,
SPPT Leader,
USEPA, NRC,
Qualified HAZMATM
Fire Dept/Contractor
NCDENR
Contractor
Any amount that reaches a
Facility Personnel,
SPPT Leader,
USEPA, NRC,
Qualified HAZMATM
navigable Water
Fire Dept/Contractor
NCDENR
Contractor
Spill Reporting
All releases of oil to waters of the United States (i.e. receiving stream) that cause a film, sheen, or
deposition, or violate applicable water quality standards will be immediately reported to the
National Response Center (NRC).
The Permittee must report to the Division Engineer and NCDWQ any non-compliance that
endangers human health or the environment. A blank Non -Compliance Report (Form 10)
is provided. Any information shall be provided orally within 24 hours (or as soon as
practical) from the time the Permittee becomes aware of the circumstances. A written
submission (Form 10) to NCDWQ shall also be provided within five (5) days of the time the
Permittee becomes aware of the circumstances.
NCDOT Spill Prevention Control and Countermeasure Plan

The written submission will contain a description of the non-compliance, and its causes; the
period of non-compliance, including exact dates and times, and if the non-compliance has not
been corrected, the anticipated time compliance is expected to continue; and steps taken or
planned to reduce, eliminate, and prevent reoccurrence of the non-compliance.
4.3 CONTAINER AREA SPECIFIC REQUIREMENTS
4.3.1 Potential Spill Scenarios
Equipment failures may result in discharges of oil or hazardous substances in varying amounts
over varying periods of time. The types of structural, mechanical or instrument failure may
include tank rupture, or piping and fitting failures associated with the use of various petroleum
and non -petroleum products. These failures can occur as the result of structural deficiencies,
material defects, unchecked corrosion, and extreme stresses resulting from unusual internal or
external pressures, or external loads.
The potential spill sources, total quantity of the potential spill, probable direction of flow, and the
method of containment are provided in Figure 4 and Table 4-1. Specific flow rates for each
scenario are dependent on the size of the failure or rupture; however, the spill scenario is
assumed to be a catastrophic release, where the entire container quantity is released within two
(2) minutes. Facility experience does not indicate a reasonable potential for equipment failure.
4.3.2 Diversionary Control and Containment
Diversionary control of Facility drainage is discussed further in the following sections of this
plan: Facility Drainage (Section 2.4) and Management of Runoff (Section 3.2.13). Secondary
containment of tanks on -site is discussed in general terms in Section 3.3.5 and listed specifically
per container in Table 4-1.
4.3.3 Inspections, Tests, and Record Keeping
To comply with this section of the Oil Pollution Prevention regulations, Facilities will conduct
regularly scheduled equipment/area inspections. The regulations require the PE sealing this Plan
to rely on industry standards when developing an inspection schedule. These inspections focus
on early detection of conditions that could lead to a release of oil from the various aboveground
storage tanks or their ancillary equipment. Scheduled maintenance is also conducted on critical
components of the various oil storage and transfer systems.
During normal daily duties, personnel perform casual visual inspections in addition to the
documented inspections shown below. Monthly and annual inspections of work areas will be
conducted by the SPPT Leader, unit or shop supervisor, or other designated personnel during
normal duties. A written record is required for these inspections. Forms 23 and 24 will be
completed for the monthly and annual inspections and will be maintained on -site with this Plan for
at least three years. Form 19, the Semi -Annual Site Inspection Checklist, also includes a "Liquid
Storage in ASTs and Fueling" section that is applicable to SPCC regulated containers. Particular
attention will be paid to leaks, spills, and properly operating equipment. Problems will be reported
and corrected as soon as practical.
NCDOT Spill Prevention Control and Countermeasure Plan

Visual inspections are performed by designated Facility employees on a monthly basis and
whenever material repairs are made to the container. Visual include the following:
• Inspections of the aboveground tanks, piping, and fittings for signs of spills, releases,
overfills or damage; and
• Inspections of exterior surfaces of the tanks, pumps, piping, valves, and other
equipment for signs of leakage and maintenance requirements.
Steel Tank Institute (STI) SP001 is the industry standard that provides guidance on visual and
certified inspections of aboveground steel tanks. The inspection schedule is based on container
size, type and whether or not the container has secondary containment. Table 4-3 shows the STI-
recommended visual and certified inspections per steel AST at the Facility. Table information is
sorted first by type of secondary containment, and then by container size.
Integrity inspections/testing is required for all bulk storage containers. Certified external and
internal inspections noted in Table 4-3 include integrity testing of tanks and are conducted by
certified inspectors. However, EPA has clarified that facilities may provide equivalent
environmental protection as allowed under 40 CFR 112.7(a)(2) by conducting monthly visual
inspections on certain containers. CONTAINERS THAT ARE NOT REQUIRED TO
UNDERGO INTEGRITY TESTING MUST MEET THE FOLLOWING CRITERIA:
• Shop -built,
• Aboveground,
• Store non -corrosive materials,
• Have a storage capacity less than 30,000 gallons, and
• Have all sides including the bottom visible for inspection.
Drums, portable containers, and some aboveground storage tanks covered under this policy
qualify for this allowance. Therefore, integrity testing of drums, portable containers and some
ASTs is not required.
Monthly and annual inspection records are maintained on -site for at least three years. Note that
the annual visual inspections are more detailed than the monthly inspections. The Facility
maintains certified inspection and testing records for the life of the container.
NCDOT Spill Prevention Control and Countermeasure Plan

Table 4-3. Tank Inspections
Tank Type
Size (gallons)
Secondary Containment
Type of Inspection
Inspection
Fre
uenc
AST
Up to 5,000
Concrete containment or
Visual
Monthly and
double -walled
Annually
AST
5,001— 30,000
Concrete containment or
Visual
Monthly and
double -walled
Annually
AST
5,001— 30,000
Concrete containment or
Certified External
20 years
double -walled
AST
Up to 1,100
Earthen berm
Visual
Monthly and
Annually
AST
1,101 to 5,000
Earthen berm
Visual
Monthly and
Annually
AST
1,101 to 5,000
Earthen berm
Leak Test and
10 years
Certified External
AST
5,001— 30,000
Earthen berm
Visual
Monthly and
Annually
Certified External and
5 years
Leak Test
10 years
AST
5,001 — 30,000
Earthen berm
or
Certified External and
10 years
Certified Internal
20 years
AST
Up to 1,100
None
Visual
Monthly and
Annually
AST
Up to 1,100
None
Certified External
10 years
AST
Up to 1,100
None
Leak Test
10 years
AST
1,101 to 5,000
None
Visual
Monthly and
Annually
Leak Test and
2 years
Certified External
5 years
AST
1,101 to 5,000
None
or
Leak Test and
5 years
Certified External and
5 years
Certified Internal
10 years
AST
5,001 30,000
None
Visual
Monthly and
Annually
Leak Test and
1 year
Certified External
5 years
AST
5,001 30,000
None
or
Leak Test and
5 years
Certified External and
5 years
Certified Internal
10 years
NCDOT Spill Prevention Control and Countermeasure Plan

4.3.4 Personnel Training
Designated oil handling personnel are expected to respond to an on -site release, and shall be
properly trained in spill response. Records of this training are maintained on -site. It is the intent
of the Facility to outsource spill cleanup and site remediation of large releases; therefore,
personnel training should meet the necessary requirements for first responder and spill
containment activities.
Oil handling personnel are trained to prevent discharges. Training is held on at least an annual
basis for all oil -handling personnel in spill prevention and response. New employees are trained
within the first six months of employment.
This training includes a review of this SPCC Plan, applicable pollution control laws, and spill
response procedures. Personnel also receive specific training in petroleum product handling
procedures, good housekeeping procedures, and equipment maintenance and operation. The
training also highlights and describes any known past spill events or failures, malfunctioning
components, and recently developed precautionary measures. Records of annual training will be
maintained with this SPCC Plan.
The Division Engineer or appointee is accountable for discharge prevention at the Facility.
4.3.5 Facility Security
Establishing a security system may prevent an accidental or intentional release of oil or hazardous
substances to the stormwater drainage system as a result of vandalism, theft, sabotage, or other
improper uses of Facility property. Section 2.3 describes security systems in place at the Facility.
4.3.6 Rainwater Inspection in Diked Areas
Secondary containment dikes for all outdoor bulk quantity aboveground storage tanks are
inspected. Section 1.4.8 describes releases from secondary containment structures.
4.3.7 Undiked Areas
The SPCC regulations require facilities to prevent potential discharges from undiked areas by
designing Facility drainage systems to flow into catchment basins or lagoons. Most Facility
drainage systems were not engineered in this fashion. The limited potential for spills outside of
typical fuel handling areas does not warrant a complete redesign of the Facility's existing
drainage system. The Facility's spill response capabilities as described in Section 4.2.4 and
proper personnel training as described in Sections 1.4.4 and 4.3.4 will protect against potential
discharges to storm drainage systems from any undiked area. These procedures provide
equivalent environmental protection (as allowed under 40 CFR 112.7(a)(2)) to a catchment
basin.
NCDOT Spill Prevention Control and Countermeasure Plan

4.3.8 General Product Handling
Facility personnel follow standard operating procedures for product handling as provided in the
initial and annual training. Special care is given to loading and unloading since the likelihood of
an oil spill is most probable during this operation. Vehicles entering the Facility will be warned
either verbally or with signage of aboveground piping or other oil transfer operations. Tank truck
unloading procedures will be conducted under the supervision of Facility personnel to ensure that
proper unloading procedures are followed and to ensure that Facility personnel are present in the
event of a release.
During transfer of fuel or delivery of hazardous substances to Facility areas, the driver and handlers
will be responsible for preventing spills. Upon arrival at the Facility, the driver has the
responsibility to inspect the tank truck for signs of leaks or unusual conditions prior to entering
the site. Loading or unloading will occur in approved locations only. The driver will ensure that
all hoses are secure and that proper absorbent materials (e.g., pads, booms and socks) are available
before unloading.
Drivers will use chock blocks and/or a vehicle break interlock system to prevent the premature
disconnection of their truck during fuel transfer. During all fuel delivery operations, the driver will
remain with the vehicle at all times. Sufficient volume (approximately 10% of the total capacity)
will be maintained in the container for thermal expansion. If high -liquid level alarms or pump
cut-off devices are not located on tanks, personnel will monitor tank levels using dipsticks, visual
observation or other approved method. A spill kit will be located near the area where loading or
unloading is occurring. Drivers will visually inspect all valves and outlets for leakage when
transfer is complete.
Tank trucks are used in the loading and unloading of various products such as diesel fuel,
biodiesel, waste oils, gasoline, or CRS-2 at the ASTs located at the Facility. There is no
secondary containment for the tanker trucks at these various locations. The Facility will
maintain spill response equipment and follow spill contingency procedures during all loading
and unloading events. Specific Facility procedures for loading and unloading are located on -site.
In general, personnel follow the spill prevention procedures below when transferring product to
and from a tanker truck:
• Load or unload in approved locations only;
• Verify the remaining volume of the receiving container;
• Properly close all drainage valves for any secondary containment;
• Allow sufficient volume (approximately 10% of the total capacity) in the container
for thermal expansion;
• Visually inspect all valves for leakage when transfer is complete.
NCDOT Spill Prevention Control and Countermeasure Plan

4.3.9 Tank and Piping Requirements
Completely buried or partially buried metallic storage tanks will either have a protective coating
or cathodic protection compatible with local soil conditions.
If steam heating coils are present on -site, monitor the steam return and exhaust lines for
contamination.
Any field -constructed aboveground tanks will be evaluated for risk of discharge or failure due to
brittle fracture if the tank undergoes repair, alteration, reconstruction or change in service.
Aboveground piping is located at the Facility. The Facility piping systems have been designed
with proper pipe supports to minimize abrasion and corrosion and allow for expansion and
contraction. Buried piping that is installed, modified or replaced in the future will either have a
protective coating or cathodic protection. In the event that piping is exposed during an
excavation, the pipe will be inspected for corrosion.
THIS IS THE END OF THE PLAN.
NCDOT Spill Prevention Control and Countermeasure Plan

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46

APPENDIX A
ACRONYMS AND DEFINITIONS

ACRONYMS
The following is a list of acronyms and abbreviations that may be used in reference to the North
Carolina Department of Transportation's Stormwater Pollution Prevention Plan and Spill
Prevention Control and Countermeasure Plan Programs.
AST
Aboveground Storage Tank
BMP
Best Management Practice
CFR
Code of Federal Regulations
CRS-2
Asphalt Emulsion (or Liquid Asphalt)
DEQ
Department of Environment Quality
EPA
Environmental Protection Agency
EPCRA
Emergency Planning and Community Right -to -Know Act
FRP
Facility Response Plan
HAZMAT
Hazardous Materials
HM
Hazardous Materials
NCDEQ
North Carolina Department of Environmental Quality
NCDOT
North Carolina Department of Transportation
NCDPS
North Carolina Department of Public Safety
NPDES
National Pollutant Discharge Elimination System
NRC
National Response Center
OWS
Oil/Water Separator
Plan
Stormwater Pollution Prevention and SPCC Plan
Permit
NCDOT Permit No. NCS000250
Permittee
NCDOT Facility
POL
Petroleum -based fuels, Oils, and Lubricants
POTW
Publicly Owned Treatment Works
REU
Roadside Environmental Unit
SAP
Satellite Accumulation Point (for hazardous waste)
SARA
Superfund Amendments and Reauthorization Act
SDO
Stormwater Discharge Outfall
SDS
Safety Data Sheet
SPCC
Spill Prevention, Control and Countermeasure (Plan)
SPPP
Stormwater Pollution Prevention Plan
SPPT
Stormwater Pollution Prevention Team
USEPA
United States Environmental Protection Agency
USGS
United States Geological Survey
UST
Underground Storage Tank
NCDOT SPPP Appendix A -I

DEFINITIONS
Best Management Practice (BMP) is a measure or practice used to prevent or minimize the amount
of pollution entering surface waters. BMPs can be structural or non-structural and may take the
form of a process, activity, or physical structure.
Bulk Storage Container means any container used to store oil. These containers are used for
purposes including, but not limited to, the storage of oil prior to use, while being used, or prior to
further distribution in commerce. Oil -filled electrical, operating, or manufacturing equipment is
not a bulk storage container.
Bulk Storage of Liquid Products are liquid raw materials, manufactured products, waste materials or
by-products having a total combined storage capacity of greater than 1,320 gallons.
Conveyance is any natural or manmade channel or pipe in which concentrated stormwater flows.
Discharge is a release or flow of stormwater or other substance from a conveyance or storage
container.
General Permit is a permit issued under the NPDES program to cover a certain class or category of
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, and (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. It possesses at least one of four
characteristics (ignitability, corrosivity, reactivity, or toxicity), or appears on special USEPA lists.
Illegal Dumping is the deposition or placement of solids or fluids of any kind into the stormwater
drainage system that will create a litter or nuisance, or that will pollute or cause an unsanitary
condition on the system.
Illicit Connection is any pipeline, ditch, or other direct physical connection to the stormwater
drainage system or waters of the State that is not composed entirely of stormwater except discharges
authorized by a separate NPDES permit or allowed by this Permit.
Illicit Discharge Investigation is an evaluation to determine whether or not non-stormwater
discharges are present at a Facility's industrial stormwater discharge outfalls.
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.
NCDOT SPPP Appendix A-2

National Pollutant Discharge Elimination System (NPDES) means the Federal Environmental
Protection Agency's (USEPA's) national program for issuing, modifying, revoking and reissuing,
terminating, monitoring, and enforcing water quality permits.
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 means oil of any kind or in any form, including, but not limited to: fats, oils, or greases of
animal, fish, or marine mammal origin; vegetable oils, including oils from seeds, nuts, fruits, or
kernels; and, other oils and greases, including petroleum, fuel oil, sludge, synthetic oils, mineral
oils, oil refuse, or oil mixed with wastes other than dredged spoil.
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
waters of the State or to a separate municipal storm system. See also point source discharge.
Permit Issuing Authority (or Permitting Authority) is the State of North Carolina Department of
Environment and Natural Resources, Division of Water Quality.
Permittee is the North Carolina Department of Transportation, or the owner/ operator issued the
NPDES Permit. The NCDOT Facility is considered to be the permittee for this SPPP.
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 seg.)), 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.
Run-on is stormwater surface flow or other surface flow which enters property other than that where
it originated.
Runoff is that part of precipitation, snow met, 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.
Secondary Containment are structures, usually dikes or berms, surrounding tanks or other storage
containers and designed to catch spilled material from the storage containers. Secondary
NCDOT SPPP Appendix A-3

containment must provide spill containment for the contents of the single largest tank within the
containment structure plus sufficient freeboard to allow for the 25-year, 24-hour storm event.
Sheeflow is runoff which flows over the ground surface as a thin, even layer, not concentrated in a
channel.
Significant materials, as defined at 122.26(b)(12) include, but are 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 the Comprehensive Environmental Response, Compensation, and Liability
Act (CERCLA); any chemical the Facility is required to report pursuant to section 313 of Title III of
the Superfund Amendments and Reauthorization Act (SARA); fertilizers; pesticides; and waste
products such as ashes, slag, and sludge that have a potential to be released with stormwater
discharges.
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 (Ref: 40 CFR 110.10 and CFR
117.21) or Section 102 of CERCLA (Ref: 40 CFR 302.4) [or spills that cannot be controlled with
on -site resources, or cause a contamination to the environment, or cause injury to personnel].
Spill Prevention Control and Countermeasures (SPCC) Plan is a plan required for certain facilities
by federal regulation 40 CFR 112 that describes structures, such as curbing, and action plans to
prevent and respond to spills of oil as defined in the Clean Water Act. The Plan details the
equipment, workforce, procedures, and steps to prevent, control, and provide adequate
countermeasures to an oil discharge.
Stormwater runoff is the flow of water, which results from precipitation and which occurs
immediately following rainfall or as a result of snowmelt.
Stormwater Discharge Associated with Industrial Activity is 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).
Stormwater Pollution Prevention Plan (SPPP) is the comprehensive site -specific plan which details
measures and practices used to prevent or minimize stormwater pollution and improve the quality of
stormwater discharging from the site. The SPPP is based on an evaluation of the pollution potential
of the Facility.
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
NCDOT SPPP Appendix A-4

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.
NCDOT SPPP Appendix A-S

APPENDIX B
NPDES PERMIT FOR SPPP:
• PERMIT COVER LETTER
• PART II, SECTION D — INDUSTRIAL ACTIVITIES
• PART IV — STANDARD CONDITIONS
For a complete copy of Permit No. NCS000250,
search the NCDOT web page or contact the Hydraulics Unit.

�U*A
HCDEHR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R. van der Vaart
Gowernor Secretary
September 11. 2 M1
Daxid S- Chang, Ph.D.- PE
State Hydraulics Engineer
1590 Mail Service Center
Raleigh, NC 27599-1590
Subject: Permit No- NCS000250
Dear Mr. Chang:
Iu accordance with your application far a stormwater discharge ?emit received on March 16, 2015,
we are forwarding herewith the subject state - N- MES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215 .1 and the Memorandum of ,agreement between
-North Carolina and the US Environmental Protection agency dated May 9, 19N (or as subsequently -
amended).
If any parts contained in this permit are unacceptable to you, you have the right to an adjudicatory
hearing upon written request within thirty (30) days following receipt of this letter_ This request must be in
the farm of a written petition, conforming to Chapter 150E of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, Past Office Drawer 27447, Raleigh- North Carolina 27611 -
7447. Unless such demand is made, this decision shall be final and binding_
This permit does not affect the legal regnurements to obtain other permits which may be required by
the Division of Environmental Management or permits required by the Di%2sion of Land Resources- Coastal
Area Management Act or am' other Federal or Local go-vernmeutal permit that may be required_
We have made every effort to fully partner with the appropriate members of your Department during
the deg elopment of this permit_ If you have any questions concerning this permit please contact MAe
Randall at 919-907-6374 or mike- andallc3mcdenr-gov.
Sincerely,
Onginai &geed by Ywheal F. Randall
for Tracy Davis, PE
cc: Ken Pace- NCDOT
Matthew Lauffbr, N- CDOT
Mike Mitchell, EPA
Central Files
Stormwater and General Permit Unit Files
DWQ Regional Offices
Division of Energy. Mineral, and Land Resources
Energy Section - Geological -Survey Sectian - Land Quality Section
1612 Mail Sewce Center, Raleigh, Naft Caroin 27999-1612-919-707- 20D r FAJ. H9-715-B801
512 NoW Salisbury Stneet, Raleigh_ North Carolina 27604- Internet: http.fraartal.ncdenr.oruNrebAri
Am Equal Oppcctunity'l,AffirnwdveActim Ernploff-50% Recycled 11A PastConsurner Paper
NCDOT SPPP Appendix B-1

SECTION D INDUSTRIAL ACTIVITIES
1. Develop, Maintain and Implement Stormwater Pollution Prevention Plans
Objective
i. Maintain and implement a Stormwater Pollution Prevention Plan (SPPP or
Plan) for each facility with an industrial activity that is covered by this
permit.
ii. Develop and implement a Plan prior to operation of any new industrial
facilities.
b. Management Measures
The NCDOT shall implement the following management measures to meet the objectives
of the Industrial Activity Program.
Management Measures
Measurable Goals
Maintain and implement a
NCDOT shall maintain and implement a site specific
SPPP for each covered
Stormwater Pollution Prevention Plan (SPPP) for each
industrial activity and
covered facility with an industrial activity. For new
related facility.
activities or facilities, the SPPP shall be developed and
implemented prior to operation. New Activities and
facilities shall be identified in the annual report and
include a brief description and location information.
SPPP requirements are listed below.
2. Stormwater Pollution Prevention Plan Requirements for Industrial Activities
a. The Plans shall be considered public information in accordance with the provisions
of this permit.
b. The Plan shall include, at a minimum, the following items:
i. Site Plan. The site plan shall provide a description of the physical facility
and the potential pollutant sources which may be expected to contribute to
contamination of stormwater discharges. The site plan shall contain the
following:
(a) A general location map (USGS quadrangle map or appropriately
drafted equivalent map), showing the facility's location in relation
to transportation routes and surface waters, the name of the
receiving water(s) to which the stormwater outfall(s) and discharge
points(s) discharges, or if the discharge is to a municipal separate
storm sewer system, the name of the municipality and the ultimate
receiving surface waters; and accurate latitude and longitude of the
point(s) of discharge.
NCDOT SPPP Appendix B-2

(b) A narrative description of storage practices, loading and unloading
activities, outdoor process areas, dust or particulate generating or
control processes, and waste disposal practices.
(c) A site map drawn to scale with the distance legend indicating
location of industrial activities (including storage of materials,
disposal areas, process areas and loading and unloading areas),
drainage structures, drainage areas for each outfall and activities
occurring in the drainage area, building locations and impervious
surfaces, and the percentage of each drainage area that is
impervious. For each outfall, provide a narrative description of the
potential pollutants which could be expected to be present in the
stormwater discharge.
(d) A list of significant spills or leaks of pollutants that have occurred
at the facility during the 3 previous years and any corrective
actions taken to mitigate spill impacts.
(e) Certification that the stormwater outfalls and discharge point(s)
have been evaluated for the presence of non-stormwater
discharges. The certification statement in Part III, Section A,
Paragraph 6(c) will be signed by NCDOT Division points of
contact.
ii. Stormwater Management Plan. The stormwater management plan shall
contain a narrative description of the materials management practices
employed which control or minimize the exposure of significant materials to
stormwater, including structural and nonstructural measures. The
stormwater management plan, at a minimum, shall incorporate the
following:
(a) A review of the technical and economic feasibility of changing the
methods of operations and/or storage practices to eliminate or
reduce exposure of materials and processes to stormwater.
Wherever practical the permittee shall cover all storage areas,
material handling operations, and manufacturing or fueling
operations to prevent materials exposure to stormwater. In areas
where elimination of exposure is not practical, the stormwater
management plan shall document the feasibility of diverting the
stormwater runoff away from areas of potential contamination.
(b) A schedule to provide secondary containment for bulk storage of
liquid materials, storage of Section 313 of Title III of the
Superfund Amendments and Reauthorization Act (SARA) water
priority chemicals, or storage of hazardous substances to prevent
leaks and spills from contaminating stormwater runoff. If the
secondary containment devices are connected directly to
NCDOT SPPP Appendix B-3

stormwater conveyance systems, the connection shall be controlled
by manually activated valves or other similar devices [which shall
be secured with a locking mechanism] and any stormwater that
accumulates in the containment area shall be at a minimum
visually observed for color, foam, outfall staining, visible sheens
and dry weather flow, prior to release of the accumulated
stormwater. Accumulated stormwater shall be released if found to
be uncontaminated. Records documenting the individual making
the observation, the description of the accumulated stormwater and
the date and time of the release shall be kept for a period of five
years.
(c) A narrative description shall be provided of best management
practices (BMPs) to be considered such as, but not limited to, oil
and grease separation, debris control, vegetative filter strips,
infiltration and stormwater detention or retention, where necessary.
The need for structural BMPs shall be based on the assessment of
potential of sources to contribute significant quantities of
pollutants to stormwater discharges and data collected through
monitoring of stormwater discharges.
(d) Inspection schedules of stormwater conveyances and controls and
measures to be taken to limit or prevent erosion associated with the
stormwater systems.
(e) Vehicle and Equipment Cleaning Areas. The Plan must describe
measures that prevent or minimize contamination of the
stormwater runoff from all areas used for vehicle and equipment
cleaning. The facility shall consider performing all cleaning
operations indoors, covering the cleaning operation, ensuring that
all washwater drain to the sanitary sewer system (i.e., not the
stormwater drainage system, unless permitted by another NPDES
general or individual permit), collecting the stormwater runoff
from the cleaning area and providing treatment or recycling, or
other equivalent measures. If sanitary sewer is not available to the
facility and cleaning operations take place outdoors, the cleaning
operations shall take place on grassed or graveled areas to prevent
point source discharges of the washwater into the storm drains or
surface waters. 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
ponded water shall be removed and properly handled, e.g., by
pump to a sanitary sewer system or other proper disposal method,
prior to removing the drain cover. Detergents used outdoors shall
be biodegradable and the pH adjusted to be in the range of 6 to 9
standard units. The point source discharge of vehicle and
NCDOT SPPP Appendix B-4

equipment wash waters, including tank cleaning operations, are
not authorized by this permit and must be covered under a separate
NPDES general or individual permit or discharged to a sanitary
sewer in accordance with applicable industrial pretreatment
requirements.
iii Spill Prevention and Response Plan. The Spill Prevention and Response
Plan shall incorporate an assessment of potential pollutant sources based on a
materials inventory of the facility. Facility personnel (or team) responsible
for implementing the plan shall be identified in the plan. A responsible
person shall be on -site at all times during facility operations that have the
potential to contaminate stormwater runoff through spills or exposure of
materials associated with the facility operations.
iv. Preventative Maintenance and Good Housekeeping Program. A
preventative maintenance program shall be developed. The program shall
document schedules of inspections and maintenance activities of stormwater
control systems, plant equipment and systems. Inspection of material
handling areas and regular cleaning schedules of these areas shall be
incorporated into the program.
V. Employee Training. Training schedules shall be developed and training
provided at a minimum on an annual basis on proper spill response and
cleanup procedures and preventative maintenance activities for all personnel
involved in any of the facility's operations that have the potential to
contaminate stormwater runoff. Facility personnel (or team) responsible for
implementing the training shall be identified in the Plan.
vi. Responsible Party. The Stormwater Pollution Prevention Plan shall identify
a specific position(s) responsible for the overall coordination, development,
implementation, and revision to the Plan. Responsibilities for all
components of the Plan shall be documented and position(s) assignments
provided.
vii Plan Amendment.
(a) The permittee shall amend the Plan whenever there is a change in
design, construction, operation, or maintenance which has a
significant effect on the potential for the discharge of pollutants to
surface waters. The Stormwater Pollution Prevention Plan shall be
reviewed and updated on an annual basis.
(b) The Director may notify the permittee when the Plan does not meet
one or more of the minimum requirements of the permit. Within
30 days of such notice, the permittee shall submit a time schedule
to the Director for modifying the Plan to meet minimum
requirements. The permittee shall provide certification in writing
NCDOT SPPP Appendix B-S

(in accordance with Part III, Section A, Paragraph 6) to the
Director that the changes have been made.
viii Facility Inspections. Inspections of the facility and all stormwater systems
shall occur at a minimum on a semiannual schedule, once in the fall
(September -November) and once during the spring (April - June). The
inspection and any subsequent maintenance activities performed shall be
documented, recording date and time of inspection, individual(s) making the
inspection and a narrative description of the facility's stormwater control
systems, plant equipment and systems. Records of these inspections shall be
incorporated into the Stormwater Pollution Prevention Plan or maintained in
a retrievable electronic version.
ix. Implementation. Implementation of the Plan shall include documentation of
all monitoring, measurements, inspections and maintenance activities and
training provided to employees, including the log of the sampling data and of
activities taken to implement BMPs associated with the industrial activities,
including vehicle maintenance activities. Such documentation shall be kept
on -site for a period of five years and made available to the Director or his
authorized representative immediately upon request.
3. Qualitative Monitoring
a. Objective
(i) Evaluate the effectiveness of the industrial Stormwater Pollution
Prevention Plans (SPPP) for each industrial facility.
(ii) Perform required qualitative monitoring at stormwater discharge points or
outfalls identified in the SPPPs or during supplemental inspections as
required in Part II.D.2.i.
b. Qualitative monitoring shall be performed at each industrial stormwater outfall or
discharge point twice per year, once in the spring (April - June) and once in the
fall (September - November). Qualitative monitoring requires an inspection of
each stormwater outfall or discharge point for the parameters listed in paragraph
(c). Qualitative monitoring is for the purpose of evaluating the effectiveness of
the SPPP. No analytical tests are required. NCDOT will pursue correction of
stormwater quality where qualitative monitoring indicates degradation of quality
in comparison to previous monitoring events.
NCDOT SPPP Appendix B-6

Qualitative Monitoring Requirements for Industrial Activities
Discharge Characteristics
Frequency
Monitoring Location
Color
Semi -Annual
Stormwater Discharge Points or Outfalls
identified in the SPPP*
Odor
Semi -Annual
Stormwater Discharge Points or Outfalls
identified in the SPPP*
Clarity
Semi -Annual
Stormwater Discharge Points or Outfalls
identified in the SPPP*
Floating Solids
Semi -Annual
Stormwater Discharge Points or Outfalls
identified in the SPPP*
Suspended Solids
Semi -Annual
Stormwater Discharge Points or Outfalls
identified in the SPPP*
Foam
Semi -Annual
Stormwater Discharge Points or Outfalls
identified in the SPPP*
Oil Sheen
Semi -Annual
Stormwater Discharge Points or Outfalls
identified in the SPPP*
Erosion at or immediately
Semi -Annual
Stormwater Discharge Points or Outfalls
below the stormwater
identified in the SPPP*
discharge point or outfall
Other obvious indicators of
Semi -Annual
Stormwater Discharge Points or Outfalls
stormwater pollution
identified in the SPPP*
* Visual observations can be performed at a location upstream of the stormwater outfall or
discharge point for the purpose of improved safety or access.
NCDOT SPPP Appendix B-7

PART IV STANDARD CONDITIONS
SECTION A COMPLIANCE AND LIABILITY
1. Duty to Comply
NCDOT must comply with all conditions of this permit. Any permit noncompliance
constitutes a violation of the Clean Water Act and is grounds for enforcement action; for
permit termination, revocation and reissuance, or modification; or denial of permit
coverage upon renewal application.
a. NCDOT shall comply with standards or prohibitions established under section
307(a) of the Clean Water Act for toxic pollutants within the time provided in the
regulations that establish these standards or prohibitions, even if the permit has
not yet been modified to incorporate the requirement.
b. The Clean Water Act provides that any person who violates section 301, 302, 306,
307, 308, 318 or 405 of the Act, or any permit condition or limitation
implementing any such sections in a permit issued under section 402, or any
requirement imposed in a pretreatment program approved under sections
402(a)(3) or 402(b)(8) of the Act, is subject to a civil penalty not to exceed
$27,500 per day for each violation. The Clean Water Act provides that any
person who negligently violates sections 3 01 , 302, 306, 307, 308, 318, or 405 of
the Act, or any condition or limitation implementing any of such sections in a
permit issued under section 402 of the Act, or any requirement imposed in a
pretreatment program approved under section 402(a)(3) or 402(b)(8) of the Act, is
subject to criminal penalties of $2,500 to $25,000 per day of violation, or
imprisonment of not more than 1 year, or both. In the case of a second or
subsequent conviction for a negligent violation, a person shall be subject to
criminal penalties of not more than $50,000 per day of violation, or by
imprisonment of not more than 2 years, or both. Any person who knowingly
violates such sections, or such conditions or limitations is subject to criminal
penalties of $5,000 to $50,000 per day of violation, or imprisonment for not more
than 3 years, or both. In the case of a second or subsequent conviction for a
knowing violation, a person shall be subject to criminal penalties of not more than
$100,000 per day of violation, or imprisonment of not more than 6 years, or both.
Any person who knowingly violates section 301, 302, 303, 306, 307, 308, 318 or
405 of the Act, or any permit condition or limitation implementing any of such
sections in a permit issued under section 402 of the Act, and who knows at that
time that he thereby places another person in imminent danger of death or serious
bodily injury, shall, upon conviction, be subject to a fine of not more than
$250,000 or imprisonment of not more than 15 years, or both. In the case of a
second or subsequent conviction for a knowing endangerment violation, a person
shall be subject to a fine of not more than $500,000 or by imprisonment of not
more than 30 years, or both. An organization, as defined in section
309(c)(3)(B)(iii) of the CWA, shall, upon conviction of violating the imminent
NCDOT SPPP Appendix B-8

danger provision, be subject to a fine of not more than $1,000,000 and can be
fined up to $2,000,000 for second or subsequent convictions.
C. Under state law, a daily civil penalty of not more than ten thousand dollars
($10,000) per violation may be assessed against any person who violates or fails
to act in accordance with the terms, conditions, or requirements of a permit. [Ref:
North Carolina General Statutes 143-215.6A]
d. Any person may be assessed an administrative penalty by the Director for
violating section 301, 302, 306, 307, 308, 318, or 405 of the Act, or any permit
condition or limitation implementing any of such sections in a permit issued under
section 402 of the Act. Administrative penalties for Class I violations are not to
exceed $11,000 per violation, with the maximum amount of any Class I penalty
assessed not to exceed $27,500. Penalties for Class II violations are not to exceed
$11,000 per day for each day during which the violation continues, with the
maximum amount of any Class II penalty not to exceed $137,500.
2. Duty to Mitigate
NCDOT shall take all reasonable steps to minimize or prevent any discharge in violation
of this permit which has a reasonable likelihood of adversely affecting human health or
the environment.
3. Civil and Criminal Liability
Except as provided in Part IV, Section B, Paragraph 3 of this permit regarding bypassing
of stormwater control facilities, nothing in this permit shall be construed to relieve the
permittee from any responsibilities, liabilities, or penalties for noncompliance pursuant to
NCGS 143-215.3,143-215.6A, 143-215.6B, 143-215.6C or Section 309 of the Federal Act,
33 USC 1319. Furthermore, the permittee is responsible for consequential damages, such
as fish kills, even though the responsibility for effective compliance may be temporarily
suspended.
4. Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or
relieve the permittee from any responsibilities, liabilities, or penalties to which the
permittee is or may be subject to under NCGS 143-215.75 et seq. or Section 311 of the
Federal Act, 33 USC 1321.
5. Property Rights
The issuance of this permit does not convey any property rights in either real or personal
property, or any exclusive privileges, nor does it authorize any injury to private property
or any invasion of personal rights, nor any infringement of Federal, State or local laws or
regulations.
NCDOT SPPP Appendix B-9

6. Severability
The provisions of this permit are severable, and if any provision of this permit, or the
application of any provision of this permit to any circumstances, is held invalid, the
application of such provision to other circumstances, and the remainder of this permit,
shall not be affected thereby.
7. Duty to Provide Information
The permittee shall furnish to the Director, within a reasonable time, any information
which the Director may request to determine whether cause exists for modifying,
revoking and reissuing, or terminating the coverage issued pursuant to this permit or to
determine compliance with this permit. The permittee shall also furnish to the Director
upon request, copies of records required by this permit.
8. Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly
renders inaccurate, any monitoring device or method required to be maintained under this
permit shall, upon conviction, be punished by a fine of not more than $10,000 per
violation, or by imprisonment for not more than two years per violation, or by both. If a
conviction of a person is for a violation committed after a first conviction of such person
under this paragraph, punishment is a fine of not more than $20,000 per day of violation,
or by imprisonment of not more than 4 years, or both.
9. Penalties for Falsification of Reports
The Clean Water Act provides that any person who knowingly makes any false
statement, representation, or certification in any record or other document submitted or
required to be maintained under this permit, including monitoring reports or reports of
compliance or noncompliance shall, upon conviction, be punished by a fine of not more
than $10,000 per violation, or by imprisonment for not more than two years per violation,
or by both.
10. Permit Actions
This permit may be modified, revoked and reissued, or terminated for cause. The
notification of planned changes or anticipated noncompliance does not stay any permit
condition.
NCDOT SPPP Appendix B-10

APPENDIX C
SECONDARY CONTAINMENT GUIDANCE

Nf I if 11
Secondary
Containment Guidance
For use at County Maintenance Yards
NCI)() 1
Highway
Stormwater
1'] V)61t V11
Definition: Secondary Containments are impervious structures placed around
aboveground storage tanks designed to retain spilled material from the tanks and to
prevent stormwater, surface water and/or groundwater contamination. NCDOT's NPDES
Permit and federal regulations (40 CFR 112) require secondary containment.
When is Secondary Containment Needed?
• For Aboveground Bulk (greater than or equal to 55 gallons) storage of liquid
materials
o Oil Storage — Diesel, Gasoline, Hydraulic Fluid, Engine Oil, etc.
■ Includes liquid asphalt (e.g., CRS-2) tank storage
o Brine Production Systems and Deicer Chemical Storage Tanks
How is Secondary Containment Designed?
• 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 25-year, 24-hour storm event
o In North Carolina, the maximum 25-year, 24-hour storm event is 8.5 — 9.0
inches. Use this maximum or find the specific rainfall data for your area.
j'>6.0oos6.6
❑�6.5to 7.0
❑>7.0toE,7.5
■>7.5ta58.0
■ 8.0 to S' 8.5 25-year, 24-hour Storm Event Data
■ 8.5 to 5 9.0
■ > 9.0
Source (USGS webpage: http://water.usys.yov/pubs/wri/wri994283/report.html#fig4), Methods of Rating Unsaturated Zone and Watershed
Characteristics of Public Water Supplies in North Carolina, Water -Resources Investigations Report 99-4283, Raleigh, North Carolina 2000, By
Jo Leslie Eimers, J. Curtis Weaver, Silvia Terziotti, and Robert W. Midgette. For the most current data, reference website given above.
NCDOT SPPP Appendix C-1

Example: A coastal Maintenance Yard needs Secondary Containment for a
10,000 gallon CRS-2 tank plus rainfall. Secondary Containment capacity must be
10,000 gallons (10,000 gals x .1337 ft3/gal.=1,337 ft3 ) plus an additional 8.5 inches
(0.71 ft) added to the containment height.
Step 1: Determine the Area of the proposed
containment structure by multiplying its length
x width.
Area = 20 ft x 20 ft = 400 ft2
Step 2: Determine the Height of the
containment wall by Dividing the largest tank
volume by the area of the proposed
containment structure.
Height w/o Freeboard = 1,337 ft3/ 400 ft2 = 3.3 ft
Step 3: Add additional height for rainfall obtained from 25 Yr. Storm chart.
Final Wall Height = 3.3 ft + 0.71 ft = 4.01 ft
NOTE: This calculation does not address displacement volumes of containers, ramps, stairs or
other items stored in the containment area, which affect the containment capacity. IF THERE
ARE MULTIPLE TANKS WITHIN ONE CONTAINMENT, REMEMBER TO ACCOUNT FOR
THE VOLUME DISPLACED BY THE ADDITIONAL TANKS AND ADJUST YOUR
SECONDARY CONTAINMENT VOLUME ACCORDINGLY. For example, to calculate the
additional volume displaced by a second 10,000-gallon tank within the containment
area:
Step 4: Calculate the area of the second tank that has a diameter of 10 ft.
Area =n r2=3.14x(10ft/2)2=3.14x25=78.5ft2
Step 5: Calculate the additional volume displaced by the second tank by multiplying the displaced
area of the second tank by the wall height found in Step 2.
Displaced Volume = 78.5 ft2 x 3.3 ft = 259 ft3
Step 6: Add the displaced volume from Step 5 to the containment volume of the original
10,000-gallon tank and divide by the area of the containment structure. Then add the
additional height required for rainfall.
Final Wall Height 259 ft3 +1337 ft3 = 1596 ft3 /400 ft2 = 3.99 ft + 0.71 ft = 4.7 ft
with additional tank
NCDOT SPPP Appendix C-2

How is Secondary Containment Constructed?
• Listed below are types of tanks and the optimal material choices for construction
of the containment. When it is not feasible to use the optimal materials,
alternative materials may be used.
CRS-2
o Optimal Materials — Reinforced concrete walls and flooring.
o Alternative Materials - Cinderblock walls and concrete/ gravel flooring.
Diesel and Gasoline
o Optimal Materials — Concrete walls and flooring.
o Alternative Materials - Cinderblock walls and poured concrete floor.
Brine
o Optimal Materials — Sealed concrete walls and flooring.
o Alternative Materials - Cinderblock walls and poured concrete floor.
Fuel Tanks
o Optimal Materials — Replace old tanks with double -walled lined tanks.
o Alternative Materials - Concrete walls and flooring.
• The floor and walls must be able to withstand full hydrostatic head and be able to
support the weight of all loads, including all tanks and other equipment inside the
containment area.
• Reinforced concrete is normally preferred over non -reinforced concrete or
asphalt, which cannot withstand heavy loads or long-term use and is prone to
cracking.
o Non -reinforced concrete and asphalt may be used in containments with low
walls or curbing for some systems but is not recommended.
o Asphalt must not be used for areas containing substances like solvents or oils
that can dissolve the asphalt.
• Walls and floors of the containment area must be of a liquid -tight construction.
Sidewalls should be integrally constructed or keyed onto the floor. All the joints
and cracks should be caulked or permanently sealed. The system's inside
surface must be impervious to the material being stored until spills or leaks can
be cleaned up. As a rule of thumb spill clean up must occur within 72 hours of
being discovered.
• Drainage must be provided in order to periodically release accumulated rainwater
from the system. Drain(s) should be located at a uniform slope of not less than 1
percent away from tanks toward a sump, drainbox, or other safe means of
disposal located at the greatest practical distance from the tank.
• Drains should be equipped with a lockable, cut-off valve. This valve shall remain
closed at all times so as to prevent liquids from leaving the containment. Only
when releasing non -polluted rainwater should containment drains be open.
NCDOT SPPP Appendix C-3

Draining Rainwater from the Containment Area
• Accumulated rainwater should be released from secondary containment
structures in compliance with Permit and SPCC requirements. Each release must
be documented using a copy of Form 18 provided in the industrial facility's
Stormwater Pollution Prevention Plan (SPPP).
• Prior to any release, it should be determined if the accumulated rainwater is
contaminated. Visually check for indicators such as color, foam, outfall staining,
or visible sheen.
• Contaminated rainwater cannot be released until contaminants are removed and
disposed of in accordance with local, state, and federal regulations. Once
contaminants are removed, rainwater can then be released directly onto the
ground or into the stormwater drainage system.
• Uncontaminated rainwater can be released directly into the stormwater drainage
system or onto the ground.
• After releasing accumulated rainwater, the drain's valve must be locked in the
closed position.
Maintenance of Secondary Containment Structures
• Containment structures should be inspected after each significant rainfall or
snowfall event for excessive water accumulation. Release water as needed.
• The containment area should remain clean.
• Containment structures should be inspected periodically for structural integrity.
Walls and floors must remain liquid -tight. Any exposed joint or crack found
should be caulked or coated with a sealant compatible to the stored material.
Damaged sections of walls or flooring should be repaired or replaced as needed.
• Repair or replace leaking tanks, hoses, or fittings within the containment area.
• Drain valves must be locked in the closed position.
What are the benefits of Secondary Containment?
• Prevents stormwater, soil, and groundwater contamination
• Complies with regulations
• Reduces disposal costs
• Reduces workplace hazards from spills
• Protects plant assets
• Reduces the facility's liability risk
• Lowers cleanup and maintenance costs
NCDOT SPPP Appendix C-4

APPENDIX D
LIST OF FORMS

LIST OF FORMS
SPPP FORMS
PLAN IMPLEMENTATION SCHEDULE....................................................................... FORM 1
ORGANIZATIONAL CHART.......................................................................................... FORM 2
TRAINING DOCUMENTATION SHEET.............................................................................FORM
3
EXPOSED SIGNIFICANT MATERIALS ASSESSMENT ...................................................FORM
4
NON-STORMWATER DISCHARGE ASSESSMENT .........................................................FORM
5
CERTIFICATION OF NON-STORMWATER DISCHARGES............................................FORM
6
RECORD OF PLAN REVIEWS........................................................................................ FORM 7
PLAN AMENDMENT RECORDS.........................................................................................FORM
8
SIGNIFICANT SPILL REPORT....................................................................................... FORM 9
NON-COMPLIANCE REPORT......................................................................................
FORM 10
STORMWATER DISCHARGE OUTFALL (SDO) QUALITATIVE
MONITORING REPORT......................................................................................................FORM
17
RELEASE OF RAINWATER FROM SECONDARY
CONTAINMENT STRUCTURE..........................................................................................FORM
18
SEMI-ANNUAL SITE INSPECTION CHECKLIST (Replaces SPPP Forms 11-16) ....
FORM 19
SPPP CERTIFICATION..............................................................................
FORM 20
SPCC FORMS
SPCC MANAGEMENT CERTIFICATION/
PROFESSIONAL ENGINEER CERTIFICATION......................................................... FORM 21
CERTIFICATION OF THE APPLICABILITY OF
THE SUBSTANTIAL HARM CRITERIA...................................................................... FORM 22
SPCC MONTHLY SITE INSPECTION CHECKLIST ................................................... FORM 23
SPCC ANNUAL SITE INSPECTION CHECKLIST...................................................... FORM 24
SPILL RESPONSE AND NOTIFICATION CONTACTS .............................................. FORM 25
DISCHARGE REPORT TO EPA REGIONAL ADMINISTRATOR ............................. FORM 26

FORM 1
PLAN IMPLEMENTATION SCHEDULE
Print Facility name here Print Year here
The following schedule is provided for the SPPT Leader to implement and document the required Plan tasks for this year of the permit
term. Blank forms identified below are provided for each year. Target dates indicated below are the dates that implementation of Plan
tasks should begin, not necessarily the date that a task is completed. Enter the completion date on this form when the tasks are completed.
Insert forms and records completed into each year tab.
Task
Tasks to be Performed
Required
Documentation
Target
Date
Frequency
Completion
Date
1
Read the SPPP/SPCC Plan
None
06/08/
Annual
2
Ensure SPPP Certification is completed'
Form 20
06/08/
Once/ As needed
3
Ensure SPCC Management Certification and PE
Certification is completed
Form 21
06/08/
Once/ 5-year
4
Ensure Certification of Applicability of Substantial
Harm Criteria is completed
Form 22
06/08/
Once/ 5-year
5
Ensure Spill Response/ Notification Form is
completed and posted near telephones
Form 25
06/08/
Annual
6
Complete SPCC Monthly Site Inspection
Form 23
End Month
Monthly
On -going
7
Appoint the SPPT members
Form 2
07/30/
Annual
g
Train SPPT members and personnel on SPPP/SPCC
Form 3
07/30/
Annual
9
Complete Annual Cycle BMPs and update Site-
Specific BMPs
SPPP Website
07/30/
Annual
10
Perform 1 st biannual wet weather visual observation
of SDOs'
1 st Form 17
09/30/
Semi-annual
11
Conduct site inspection
1st Form 19
12/30/
Semi-annual
12
Perform 2nd biannual wet weather visual observation
of SDOs'
2nd Form 17
04/30/
Semi-annual
13
Conduct Comprehensive Facility Compliance
Inspection
Form 4 &
2nd Form 19
04/30/
Annual
14
Complete SPCC Annual Site Inspection
Form 24
05/30/
Annual
15
Complete Non-stormwater Discharge Assessment
Form 5
05/30/
Annual
16
Obtain Non-stormwater Discharge Certification
(Requires POC review Form 5)
Form 6
05/30/
Annual
17
Review the SPPP/SPCC Plan
Form 7
05/30/
Annual
18
Make necessary revisions to SPPP/SPCC Plan
Form 8
05/30/
Annual
Release accumulated rainwater from exposed
secondary containment
Form 18
As needed
@
N/A
Complete Significant Spill Report
Form 9
As needed
@
N/A
Complete Permit Non-compliance Report
Form 10
As needed
@
N/A
Complete Discharge Report to EPA Regional
Administrator
Form 26
As needed
@
N/A
@ Report required at each incident.
' Complete visual observation form (Form 17) for each industrial outfall, record results on website and insert a hardcopy into Plan. Perform visual
observations at outfalls once in the Spring and once in the Fall of each year.
2 The Comprehensive Facility Compliance Inspection occurs concurrently with the second semi-annual site inspection.
' Form 20 should be certified by the Division Engineer or responsible person once and kept at the Facility; it should be recertified as needed (e.g., a change
to Division Engineer postion).

FORM 2
ORGANIZATIONAL CHART
Print Facility name here Print Year here
DIVISION ENGINEER
DIVISION POC
Stormwater Pollution Prevention Team
Team Leader
Print name here
Equipment Shop
Print name here
Traffic Services
Print name here
Road Oil
Team Members
Bridge Maintenance
Print name here
Roadside Environmental
Print name here
Additional Team Member
Print name here Print name here
Additional Team Member Additional Team Member
Print name here Print name here
NCDOT Resources:
Roadside Environmental Unit Division Safety Engineer
Hydraulics Unit Division Maintenance Engineer
Safety & Loss Control Environmental Unit Division Operations Engineer
Division Hazardous Waste Manager

FORM 3
TRAINING DOCUMENTATION SHEET
Complete this form for each SPPP/SPCC training session. Keep original completed form with the Plan. Post copy
of completed form on SPPP/SPCC website. Attach training session agenda and/or describe agenda below.
Location
Instructor(s)
Date
Class Description/ Agenda: ❑Stormwater Video El Spill Prevention & Response Video
❑ Other
Employee Name I Unit I Phone Number
Training records must be retained for five years.
Reference Section 1.4.4

EXPOSED SIGNIFICANT MATERIALS ASSESSMENT FORM 4
EXPOSED SIGNIFICANT MATERIALS
ASSESSMENT
Facility:
Inspector: Date:
Instructions: Describe the significant materials that were exposed to stormwater during the past year and/or are currently exposed. Significant materials include, but are not
limited to raw materials, fuels, solvents, detergents, metals, hazardous substances, fertilizers, pesticides and waste products that have a reasonable potential to release pollutants
into stormwater discharges.
Description of Exposed
Significant Material
Period of
Exposure
Quantity
Exposed
(units)
Location (as indicated
on the site map)
Method of Storage or
Disposal (e.g., pile,
drum, tank)
Description of Proper Material Management Practices
p p g
(e.g., pile covered, drum sealed)

NON-STORMWATER DISCHARGE ASSESSMENT
FORM 5
NON-STORMWATER DISCHARGE
ASSESSMENT
Facility:
Inspector: Date:
Date of Test or Evaluation
Outfall Directly Observed
During the Test (identify as
indicated on the site map)
Method Used to Test or
Evaluate Discharge
Describe Results from Test
for the Presence of Non-
Stormwater Discharge
Identify Potential Significant
Sources
Name of Person Who
Conducted the Test or
Evaluation

FORM 6
CERTIFICATION OF NON-STORMWATER DISCHARGES
I certify, under penalty of law, that the stormwater outfalls covered by this Permit have been
tested or evaluated for the presence of non-stormwater discharges in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information
submitted. Based on my inquiry of those persons, to the best of my knowledge and belief, except
as indicated on Form 5 in this year tab, no non -permitted discharges of non-stormwater enter
the stormwater outfalls covered by this Permit because of activities occurring at this Facility.
Print Name:
Signature:
Date Signed:
Representing:
North Carolina Department of Transportation
Print Facility name here
Method of Evaluation Used:
❑ Review of building and site plans.
❑ Visual inspection of stormwater drainage system.
❑ Observation of outfalls on a dry day preceded by at least 72 hours of dry weather.
❑ Interview with Facility personnel.
❑ Flow tests using tracers/dyes.
❑ Analytical tests.
The Permittee is aware of the upset or bypass notification procedures as specified in the Facility's
NPDES Permit and will act accordingly.

FORM 7
RECORD OF PLAN REVIEWS
This Plan will be reviewed each year. The Permit requires a review and evaluation of this Plan at
least once a year, which supersedes the SPCC regulatory plan review requirement of every five years.
Blank lines are provided on this form for each SPPT member's review. The SPPT Leader is assigned
the responsibility of ensuring that this Plan will be reviewed and amended in accordance with the
stormwater discharge permit. The SPPT Leader may amend this Plan to include more effective
pollution prevention technology and BMPs, if such technology is field proven and if implementation
will significantly reduce the likelihood of the contamination of stormwater.
REVIEW DATE REVIEW COMMENTS SIGNATURE
Reference Section 1.4.1

FORM 8
PLAN AMENDMENT RECORDS
The Plan will be amended whenever there is a change in Facility design, construction, process,
operation, or maintenance that has a significant effect on the potential for stormwater contamination
at the Facility. Amendments to this Plan should be fully implemented as soon as possible, but no
later than six (6) months after changes occur or after the review period. All technical amendments
to the SPCC Plan must be certified by a registered Professional Engineer in accordance with 40
CFR § 112.3(d), and satisfactorily implemented. PE seals are only required if an SPCC amendment
is technical (i.e. requires engineering practice such as a physical modification).
This record sheet is provided to summarize amendments to the Plan. The SPPT Leader will be
responsible for ensuring that the Plan is amended in strict accordance with the Plan requirements.
AMEND DATE AMENDMENT COMMENTS (include Plan Section) SIGNATURE/SEAL
Reference Section 1.4.1

FORM 9
SIGNIFICANT SPILL REPORT
Complete this form for each significant spill incident. Keep original form with the Plan. Send one copy of completed
Form 9 to Division Engineer. Complete Form 10 if spill results in a Stormwater Permit non-compliance incident and
send one copy to Division Engineer. Complete Form 26 if necessary and send one copy to Division Engineer.
INCIDENT DATE:
REPORT DATE:
FACILITY NAME:
ADDRESS & LOCATION:
PERSON REPORTING:
MANAGER IN CHARGE:
SPILLED PRODUCT INFORMATION:
Spill Location:
Product:
Storage Capacity of Product Container:
Spill Volume:
Size of Area Affected by Release:
Duration of Release:
Spill from or suspected from a leaking AST, UST, or piping?
Spill contained on premises?
Did the spill enter the stormwater drainage system?
Did the spill enter a body of water?
Nearest body of water or body of water spill entered?
DESCRIPTION:
(check all applicable)
INCIDENT TIME:
DISCOVERY TIME:
PHONE:
PHONE:
YES
NO
Distance
leaking drums/ containers ❑ overfill, vehicle unattended ❑ equipment failure
leaking tank/ lube truck ❑ drive off, hose in vehicle ❑ other human error
overfill, during fuel drop ❑ other (than storage device or equipment failure, or human error)
Hazards associated with the spill:
Amount of spill control supplies used/ to be restocked:
Type and amount of material to be disposed:
Measures taken to prevent recurring incidents:
Personal Injuries:
Additional pertinent information:
AGENCIES NOTIFIED OF INCIDENT:
NRC Contact:
NCDENR Contact:
Other Contact:
Date/Time:
Date/Time:
Date/Time:
IT IS NOT NECESSARY TO WAIT FOR ALL INFORMATION BEFORE CALLING THE NATIONAL RESPONSE CENTER.

FORM 10
NON-COMPLIANCE REPORT
Complete this form for each non-compliance incident. Provide additional appropriate detail under
Comments. Keep original form with the SPPP/SPCC document. Send one copy to Division
Engineer. The Permittee will report to NCDENR DWQ Supervisor of Stormwater Management any
non-compliance that endangers human health or the environment. Information will be provided orally
within 24 hours from the time the Permittee becomes aware of the non-compliance incident.
Name of Facility:
Facility Address: street
city/zip
Type of Non -Compliance:
Check all that apply.
Comments:
Date:
Inspector:
name
title
Reason for Non -Compliance:
Check all that apply.
❑ Act of Nature (e.g., flood, earthquake)
...........................................................................................................................
❑ Unavoidable accident
❑ Deliberate act by vandals
.......................................................................................................................
❑ Deliberate act by NCDOT personnel
❑ Mechanical failure of device
❑ Inadequate training of personnel
..........................................................................................................
❑ Inadequate capital funding
❑ Other

FORM 17
STORMWATER DISCHARGE OUTFALL (SDO)
QUALITATIVE MONITORING REPORT
NPDES PERMIT NO.:
FACILITY NAME:
COUNTY:
PHONE:
INSPECTOR:
DATE:
OUTFALL No.
SDO-
OUTFALL TYPE:
❑ DITCH ❑ PIPE ❑ CHANNEL
RECEIVING STREAM:
Flow observation: ❑ Flow ❑ No flow
Describe the industrial activities occurring within the outfall drainage area.
COLOR - Describe the discharge color (e.g. red, brown, green, blue) and tint (e.g., light, medium, dark).
ODOR - Describe any distinct odors (e.g. gasoline, rotten eggs, chlorine) the discharge may have.
CLARITY - Choose the number that best ranks the clarity of the discharge, where 1 is clear and 10 is very
cloudy.
1 2 3 4 5 6 7 8 9 10
FLOATING SOLIDS - Choose the number that best ranks the amount of floating solids in the discharge, where
1 is no solids and 10 is the surface covered with floating solids.
1 2 3 4 5 6 7 8 9 10
SUSPENDED SOLIDS - Choose the number that best ranks the amount of suspended solids in the discharge,
where 1 is no solids and 10 is extremely muddy.
1 2 3 4 5 6 7 8 9 10
FOAM
Is there any foam on or in the stormwater discharge? yes no
OIL SHEEN
Is there an oil sheen visible on the stormwater discharge? yes no
EROSION
Is there erosion at or immediately below the outfall? yes no
List and describe other obvious indicators of stormwater pollution:
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
Reference Section 1.4.5 for directions and explanations

FORM 18
RELEASE OF RAINWATER FROM SECONDARY
CONTAINMENT STRUCTURE
Complete this form each time that accumulated rainwater is to be released from exposed secondary
containment structures. This Form must be kept onsite for a period of five years.
Building/Area: Date:
SPPT Member: Time:
Description of Secondary Containment Structure:
Visual Observation of Accumulated Rainwater
Check yes or no, and provide details under comments.
ITEM
YES
NO
COMMENTS
COLOR
FOAM
CLOUDY
OUTFALL STAINING
OIL SHEEN
DRY HER FLOW
OTHER INDICATORS
If accumulated rainwater appears contaminated, list actions taken to remove contaminants:
Release of Accumulated Rainwater:
1. What was the approximate volume of water released from the containment area?
❑ gallons ❑ cubic feet
2. After the release of the accumulated rainwater, was the secondary containment drain valve
properly closed and locked? ❑ YES ❑ NO
Comments:
Reference Section 1.4.7

FORM 19 (page 1 of 2)
SEMI-ANNUAL SITE INSPECTION CHECKLIST
(REPLACES SPPP FORMS 11-16)
Date:
Building/ Area:
Inspector:
Complete checklist YES: Compliance No: Non -Compliance N/A: Not Applicable and list required actions at bottom.
GOOD HOUSEKEEPING PROCEDURES
YES
NO
N/A
Required
Action
Are work areas and floors clean and dry?
❑
❑
❑
❑
There are no leaks/ discharges of significant materials to storm system present?
❑
❑
❑
❑
Are dumpster lids kept closed?
❑
❑
❑
❑
Is loose garbage and waste material picked up and disposed regularly?
❑
❑
❑
❑
Is trash and litter removed from catch basins and other portions of stormwater
drainage system on a regular basis?
❑
❑
❑
❑
Are areas subject to erosion stabilized with grass, mulch, check dams, or other
appropriate sediment control measures?
❑
❑
❑
❑
Are scrap parts and scrap metal disposed regularly and properly?
❑
❑
❑
❑
HAZARDOUS MATERIALS HANDLING AND STORAGE
Is there adequate aisle space and organization in material storage areas?
❑
❑
❑
❑
Are containers in generally good condition (free of leaks, spills, and corrosion)
and stored away from direct traffic routes to prevent accidentals ills?
❑
❑
❑
❑
Are items in storage properly labeled to indicate contents?
❑
❑
❑
❑
Are all containers closed?
❑
❑
❑
❑
Are containers stored under cover and away from exposure to precipitation?
❑
❑
❑
❑
Are containers stacked according to manufacturer's instructions on pallets
and/or off the ground to avoid corrosion due to moisture buildup?
❑
❑
❑
❑
Are loading/ unloading areas protected from rainfall, run-on, and runoff?
❑
❑
❑
❑
Are leaks/ spills/ drips cleaned up promptly?
❑
❑
❑
❑
Are excess hazardous materials removed from site promptly?
❑
❑
❑
❑
Are current and correct MSDSs readily available to employees?
❑
❑
❑
❑
LIQUID STORAGE IN ASTS AND FUELING
Is spill/ overflow prevention equipment installed, maintained and operating
properly on liquid ASTs and at fuel delivery areas?
❑
❑
❑
❑
Is secondary containment provided for tanks and fueling areas?
❑
❑
❑
❑
Are containment dikes in good condition?
❑
❑
❑
❑
Are valves on containment systems closed and locked except during observed
and controlled releases?
❑
❑
❑
❑
Are portable tanks managed properly and are lube trucks parked within
secondary containment, or away from inlets to the stormwater drainage system?
❑
❑
❑
❑
Are spill prevention and response awareness signs installed?
❑
❑
❑
❑
Are spill kits readily available at the Facility?
❑
❑
❑
❑
Are fuel leaks and spills controlled using absorbents/ drip pans/ pads?
❑
❑
❑
❑
Is there crash protection around aboveground tanks and exposed pipes?
❑
❑
❑
❑
Are tank systems, including tank integrity, inspected and tested regularly?
❑
❑
❑
❑
Are fueling areas covered or otherwise protected from precipitation and run-on?
❑
❑
❑
❑
Are dry cleanup materials swept up, containerized, and disposed properly?
0
0
0
0

FORM 19 (page 2 of 2)
SEMI-ANNUAL SITE INSPECTION CHECKLIST
(REPLACES SPPP FORMS 11-16)
VEHICLE AND EQUIPMENT MAINTENANCE AND WASHING
Are vehicles and equipment checked for leaking fluids?
❑
❑
❑
❑
Are oil filters completely drained before recycling/ disposal?
❑
❑
❑
❑
Are engine fluids and batteries recycled?
❑
❑
❑
❑
Are waste materials properly segregated, labeled, and discarded?
❑
❑
❑
❑
Are maintenance activities performed indoors where practical?
❑
❑
❑
❑
Are salvage/ wrecked vehicles and equipment stored properly?
❑
❑
❑
❑
Are outside wash areas in compliance with the Permit?
❑
❑
❑
❑
Is washwater contained or otherwise kept out of the storm drainage system?
❑
❑
❑
❑
PAINTING OPERATIONS
Are painting activities performed within designated areas?
❑
❑
❑
❑
Does designated paint area prevent overspray and the contact of byproducts with
stormwater?
❑
❑
❑
❑
Are parts inspected prior to painting to ensure parts are dry, clean, or rust free?
❑
❑
❑
❑
Is waste from sanding and sand blasting contained and disposed properly?
❑
❑
❑
❑
Is paint waste isolated from contact with stormwater?
❑
❑
❑
❑
Are paints, thinners, and solvents recycled, reused, or disposed properly?
❑
❑
❑
❑
PREVENTATIVE MAINTENANCE
Are there regularly scheduled inspections of equipment that upon failure, could
result in leaks ors ills of pollutants that could enter the storm waters stem?
❑
❑
❑
❑
Are stormwater management devices routinely inspected and maintained (e.g.,
cleaning catch basins and clogged inlets)?
❑
❑
❑
❑
Is there a program to routinely repair leaking/dripping vehicles and equipment?
❑
❑
❑
❑
Are oil/ water separators installed in storm drains or sewer systems operating
and bein2 maintained properly?
❑
❑
❑
❑
Are sediment traps installed in storm drains or sewer systems operating and
bein2 maintained Properly?
❑
❑
❑
❑
OILIWATER SEPARATOR (OWS)/ SEDIMENT CHAMBERS
There is no free product or oil sheen or fuel odors present in OWS?
❑
❑
❑
❑
Are OWS and associated sediment chamber functioning?
❑
❑
❑
❑
Do water levels remain constant in OWS/ sediment chamber?
❑
❑
❑
❑
Are the gate and valves in good condition?
❑
❑
❑
❑
Are the OWS/ sediment chamber upstream/downstream areas free of blockage?
❑
❑
❑
❑
SECURITY
Are the units locked?
❑
❑
❑
❑
Are gates/fences locked and in good condition?
❑
❑
❑
❑
Are starter controls locked?
❑
❑
❑
❑
Is facility lighting adequate?
❑
❑
❑
❑
Required Actions:
Reference Section 3.2.8

FORM 20
SPPP CERTIFICATION
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations" [as specified in Part
III, Section A, Paragraph 6(c) of the Permit].
Authorized Signatory'
Division Engineer
Phone No.
Date
Print name
Print title
Print phone
Print date
Sign here
Facility Name
1 Certification of this Plan is made once for this permit term and is not updated annually.
This document was prepared under a contract with NCDOT. "I certify that this document meets the
intent of that contract and that URS Corporation performed this work to standards consistent with
those required by the NPDES stormwater permit issued to NCDOT."
authorized Signatory'
UR,S Corporatim
P h on a No.
Date
P7*tnam
P,a,tti ,7
Px-mtpAaw
Prbmtdas
Daniel O'Co nwr, P.E.
sr. Project _ naager
336-456 3T
Tarns 16, 2010
Skn hers

FORM 21
This document was prepared by URS Corporation under a contact with NCDOT. SPCC requirements
are outlined as per 40 CR 112 Cross Reference Table.
Authorized Signatory'
Z1R.S Cnrparation
Phone No.
Date
P7*fr.MM
Pnhrtid?
P,a,tp&w
Prfrkt
Daniel O'Comur, P_E_
Sr- Projef r _ naagwr
336-456 3T
Jupw }6, 3010
Sin �ws
SPCC MANAGEMENT CERTIFICATION
This Spill Prevention, Control, and Countermeasure Plan for this NCDOT Facility has been reviewed
by Division Management. This Plan has the full endorsement of Division Management at a level of
authority to commit the necessary resources to fully implement this Plan.
Authorized Signatory'
Division Engineer
Phone No.
Date
Print name
Print title
t phone
bP-
Print date
Sign here
Facility Name
PROFESSIONAL ENGINEER CERTIFICATION
I, , attest by means of this certification:
• That I am familiar with the requirements of 40 CFR 112.1 — 112.8;
• That I or my agent have visited and examined the Facility;
• That this Spill Prevention, Control, and Countermeasure Plan has been prepared
in accordance with good engineering practice, including consideration of
applicable industry standards, and with the requirements of this part;
• That procedures for required inspections and testing have been established; and
• That this Plan is adequate for the Facility.
Professional Engineer
North Carolina DOT
State of North Carolina
Professional Engineer Certificate Number
Date

FORM 22
CERTIFICATION OF THE APPLICABILITY OF
THE SUBSTANTIAL HARM CRITERIA
Facility Name:
Facility Address:
1. Does the Facility transfer oil over water to or from containers and does the Facility have a total oil
storage capacity greater than or equal to 42,000 gallons?
Yes No
2. Does the Facility have a total oil storage capacity greater than or equal to 1 million gallons and does
the Facility lack secondary containment that is sufficiently large to contain the capacity of the largest
aboveground oil storage tank plus sufficient freeboard to allow for precipitation within any above-
ground oil storage tank area?
Yes No
3. Does the Facility have a total oil storage capacity greater than or equal to 1 million gallons and is the
Facility located at a distance (as calculated using the appropriate formula in Attachment C-III of 40
CFR Part 112 Appendix C or a comparable formula') such that a discharge from the Facility could
cause injury to fish and wildlife and sensitive environments?
Yes No
4. Does the Facility have a total oil storage capacity greater than or equal to 1 million gallons and is the
Facility located at a distance (as calculated using the appropriate formula in Attachment C-III of 40
CFR Part 112 Appendix C or a comparable formula') such that a discharge from the Facility would
shut down a public drinking water intake?2
Yes No
5. Does the Facility have a total oil storage capacity greater than or equal to 1 million gallons and has the
Facility experienced a reportable oil spill in an amount greater than or equal to 10,000 gallons within
the last 5 years?
Yes No
I certify under penalty of law that I have personally examined and am familiar with the information
submitted in this document, and that based on my inquiry of those individuals responsible for obtaining this
information, I believe that the submitted information is true, accurate, and complete.
Signature
Name
Title
Date
1) If a comparable formula is used, documentation of the reliability and analytical
soundness of the comparable formula must be attached to this form.
2) For the purposes of 40 CFR Part 112, public drinking water intakes are analogous
to public water systems as described at 40 CFR Section 143.2(c).

FORM 23
SPCC MONTHLY SITE INSPECTION CHECKLIST
NOTE: USE A SEPARATE FORM FOR EACH OIL CONTAINER/ AREA
Date:
Oil Container/ Area:
Inspector:
Inspect all SPCC oil containers listed in your Facility Oil Container Inventory. This should include all aboveground
oil containers, tanks, drums, mobile tanks, generators, transformers, etc. that have capacity >55 gallons.
Complete checklist (YES: Compliance No: Non -Compliance N/A: Not Applicable) and list required actions at bottom. If
a box is checked "NO", then corrective action is required.
YES
NO
N/A
Required
Action
Are the primary tank(s), secondary containment, interstice, and spill protection
container free of water?
❑
❑
❑
❑
Is containment area free of equipment, debris, vegetation, or fire hazard?
❑
❑
❑
❑
Are drain valves operable and in closed positions?
❑
❑
❑
❑
Are containment egress pathways clear and gates/doors operable?
❑
❑
❑
❑
Are the tank, concrete pad, containment, ringwall and ground free of visible signs
of leaka e?
❑
❑
❑
❑
Is tank liquid level gauge readable and in good condition?
❑
❑
❑
❑
Are all tank openings properly sealed?
❑
❑
❑
❑
There are no other conditions that should be addressed for continued safe
operation or that may affect the SPCC Plan?
❑
❑
❑
❑
General Comments/Observations:
Corrective Action taken (if any):
Reference Section 3.2.8

FORM 24
SPCC ANNUAL SITE INSPECTION CHECKLIST
NOTE: USE A SEPARATE FORM FOR EACH OIL CONTAINER/ AREA
Date:
Oil Container/ Area:
Inspector:
Inspect all SPCC oil containers listed in your Facility Oil Container Inventory. This should include all aboveground
oil containers, tanks, drums, mobile tanks, generators, transformers, etc. that have capacity >55 gallons.
Complete checklist (YES: Compliance No: Non -Compliance N/A: Not Applicable) and list required actions at bottom. If
a box is checked "NO", then corrective action is required.
YES
NO
N/A
Required
Action
Is the container intact with no visible signs of leakage on or around it?
❑
❑
❑
❑
Are pipes, valves, pumps, and hoses intact with no visible signs of leakage?
❑
❑
❑
❑
If there is insulation, is it intact with no signs of damage?
❑
❑
❑
❑
Are the exterior container walls free of any oil stains?
❑
❑
❑
❑
Is the ground around the container and in secondary containment area free of oil
or petroleumproduct?
❑
❑
❑
❑
Are the fitting joints and seals free of corrosion?
❑
❑
❑
❑
Is the tank surface free of any raised spots or dents?
❑
❑
❑
❑
Does it appear that the foundation is intact with no shifting or settling?
❑
❑
❑
❑
Are the equipment supports free of cracks?
❑
❑
❑
❑
Are oil -related labels and signs legible and complete?
❑
❑
❑
❑
Is oil -containing equipment or container protected from potential physical
damage i.e. from motor vehicles)?
❑
❑
❑
❑
If rainwater is present in the secondary containment area, does sufficient volume
remain fors ill control?
❑
❑
❑
❑
If water is present, is it free of any visible product/sheen?
❑
❑
❑
❑
Is ladder and platform structure free of any sign of severe corrosion or damage?
❑
❑
❑
❑
Is containment area free of cracks, holes, and/or other breaches?
❑
❑
❑
❑
If present, are high level alarms and gauges functioning properly?
❑
❑
❑
❑
Are pumps and control systems operating properly?
❑
❑
❑
❑
Are expansion joints, valves, clamps, and supports intact with no signs of
leakage?
❑
❑
❑
❑
Are pipes and valves labeled?
❑
❑
❑
❑
If present, are all buried pipes sufficiently covered (i.e. not exposed to the
environment)?
❑
❑
❑
❑
If present, are all out -of -service pipes capped?
❑
❑
❑
❑
General Comments/Observations:
Corrective Action taken (if any):

FORM 25
SPILL RESPONSE AND NOTIFICATION CONTACTS
Complete the form below by entering the full telephone numbers for your local fire department,
the local emergency planning commission (LEPC), any local hazardous material response agency,
and any local contractors that may be used to respond to or clean up oil spills at your Facility.
Only Team Leaders or their designated representative should report oil spills to the North Carolina
Department of Environment and Natural Resources (NCDENR), the Environmental Protection
Agency (EPA) or the National Response Center (NRC). Refer to Section 1.4.3 of your
SPPP/SPCC for guidance in reporting spills to the appropriate authorities. Place copies of this
completed form near office telephones and other appropriate locations at the Facility.
COUNTY:
FACILITY NAME:
SPILL NOTIFICATION
NCDENR 24-hour Emergency
Response Spill Reporting
800-858-0368
National Response Center
800-424-8802
USEPA Region 4
404-562-9655
SPILL RESPONSE
Local Fire Department:
Local Emergency Planning Commission
(LEPC):
Other Local Response Agencies:
Division Hazardous Waste Manager:
Other Division Contacts:
Local Contractor(s):

Form 26
This report Form must be submitted to the US EPA Region IV office only if the Facility has discharged to
water: 1) More than 1,000 gallons of oil in a single discharge, or 2) More than 42 gallons of oil in each of
two discharges, occurring within any consecutive twelve-month period.
Discharge Report to EPA Regional Administrator
Facility name and location:
Name(s) of the owner or operator of
facility:
Name of person submitting the report:
Date and year of initial facility
operation:
Maximum storage or handling capacity
of the facility and normal daily
throughput:
Cause(s) of spill, including a failure
analysis of system or subsystem in
which the failure occurred:
Corrective actions and/or
countermeasures taken, including an
adequate description of equipment
repairs and/or replacements:
Additional preventive measures taken or
contemplated to minimize the
possibility of recurrence:
Note: Use additional pages if sufficient space is not provided on the form.
Provide the following:
Task Completed
Comments
Description of facility, including
maps, flow diagrams, and
topographical maps.
eThe
names of individuals and/or
organizations also contacted and
the date and time contacted.
This information must be submitted to the following EPA address:
The Regional Administrator
U.S. Environmental Protection Agency, Region 1V
61 Forsyth Street SW
Atlanta, GA 30303-3104

FORM 27 (page I of 2)
MONTHLY OIL/WATER SEPARATOR (OWS)/
Building
Building
SEDIMENT CHAMBER (SC) INSPECTION CHECKLIST
Number:
Number:
To conduct this inspection the lids of OWS or SC must be removed or opened to enable
OWS
Sediment
Sediment
OWS
Sediment
Sediment
visual inspection of interior components. Caution: Some lids are heavy. For safety, two
ID
Chamber
Chamber
ID
Chamber
Chamber
people should be present.for every inspection. Do not enter any confined space.
ID
ID
ID
ID
Facility Name:
Date:
Inspector:
Complete checklist Yes, No, or NA Not Applicable]) and list any required actions at bottom.
1. Does the OWS or SC appear to be in good condition?
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
0
2. Do the OWS/SC gate valves appear to be in good condition?
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Q3.
Is there evidence that the OWS is overflowing or has overflowed in the past month?
Yes/ No
Yes/ No
4. Has there been a spill or oil slug) that entered the OWS or SC in the past month?
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
5. Has flooding of the OWS/SC been observed during wet weather in the past month?
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
6. If visible, is the influent or effluent pipe/ tee completely submerged? 2
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
E 0
7. Do water levels appear to remain constant in OWS or SC?
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
8. Is the water/oil level more than 1 inch below the bottom of the effluent (outlet) pipe?3
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
a
9. Are there any unusual smells coming from or materials (trash) in the OWS or SC?
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
10. Does the OWS/SC appear to be operating ro erl ?
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Yes/ No
Measure the depth of sediment in the SC or wash pad grate (drain)4
inches
inches
inches
inches
(using a tank gauging stick):
of grit
of grit
of grit
of grit
11. Does depth of sediment exceed 1/3 of the SC depth or influent/ effluent pipin ?
Yes/ No/ NA
Yes/ No/ NA
Yes/ No/ NA
Yes/ Nol NA
Measure the depth of oil in the OWS5
inches
inches
(using a tank gauging stick and water finding paste):
of oil
of oil
12. Does depth of oil exceed 2 inches?
Yes/ No/ NA
Yes/ No/ NA
= y
Measure the approximate depth of sludge in the OWS and/or effluent chambers
inches of
inches of
(using a tank gauging stick :
sludge
sludge
13. Does depth of sludge exceed 1 /3 of the OWS/chamber depth?
Yes/ No/ NA
Yes/ No/ NA
If applicable, measure the liquid level in the oil storage tank associated with OWS7
(using a tank gauging stick):
inches of oil in storage tank
inches of oil in storage tank
14. Does depth of oil exceed 1/2 of the capacity of the oil storage tank?
Yes/ No/ NA
Yes/ No/ NA
Does the OWS or SC require cleanin ?8
Yes/ No Yes/ No I Yes/ No
I Yes/ No Yes/ No I Yes/ No
If present, does the OWS coalescer balls/ media need to be replaced or cleaned?
Yes/ No/ NA
I
Yes/ No/ NA
After cleaning, was OWS filled with water to appropriate level after being pumped out?
Yes/ No/ NA
Yes/ No/ NA
Other Notes or Observations:
Required Actions:

FORM 27 (page 2 of 2)
When performing visual inspections of OWS/SC, note the following:
- Are there any visible cracks in device/ chamber?
- If metallic separator chambers, is any significant rust or corrosion visible?
- Do any pipes or baffles appear to be broken, plugged, or otherwise damaged?
- Are the lids and lid handles in good condition?
- Is there any hardware missing?
- Are any SC or wash pad drains/ grates broken or missing?
2 If yes, the outlet pipe may be clogged by sludge or debris; contact Equipment Shop Supervisor.
3 If yes, the chamber/ tank may be leaking or the OWS was not filled with water after being pumped out; contact Equipment Shop Supervisor.
4 When measuring depth of sediment in SC or wash pad grate (drain):
Remove the SC lid or wash pad drain grate. Insert the tank gauging stick slowly and note the depth at which grit/ sediment is encountered.
Then push the stick through the grit/ sediment to the bottom of the chamber. Perform this measurement in each corner and central portions of
the chamber including near chamber influent/ effluent pipes. If the sediment depth exceeds 1/3 of the chamber depth or the level of influent/
effluent piping, contact the County Maintenance Yard Engineer or Equipment Shop Supervisor to have the accumulated grit/ sediment removed.
5 When measuring depth of oil in OWS:
Insert the tank gauging stick all the way to the bottom of the OWS to determine depth of fluid. After wiping the oil/water off of the stick near the
"wet -line," smear a thin layer of water finding paste on one side of the stick starting slightly above the "wet -line" and going down. Slowly insert
the stick back into the OWS until you hit the bottom. Remove the stick and note the difference between the "wet -line" and where the water
finding paste changes color. If the paste changed at the "wet -line," there is minimal oil in the OWS and no further action is required. If the depth
of oil exceeds 2 inches, contact the Equipment Shop Supervisor to have the accumulated oil removed from the OWS.
6 When measuring depth of sludge in OWS and/or effluent chamber:
Gently probe for sludge with the tank gauging stick and note the depth at which sludge was encountered. Then push the stick through the
sludge to the bottom of the OWS. The difference between the depth to sludge and depth to bottom represents the accumulated sludge in the
chamber. If the depth of sludge exceeds 1/3 chamber depth in the OWS, contact the Equipment Shop Supervisor to have the sludge removed
from the OWS.
7 When measuring depth of oil in oil holding tank or separate oil storage chamber:
If the depth of oil exceeds 1/2 the chamber depth, contact the Equipment Shop Supervisor to have the oil removed from the tank.
8 If yes, or if the answer to any of the questions 11-14 above is yes, or if inspection results indicate maintenance is needed according to the OWS
manufacturers' specifications: then contact the appropriate supervisor to coordinate OWS and/or SC cleaning.