HomeMy WebLinkAboutNCS000502_Trinity Draft SWMP_20210804
Draft Stormwater Management Plan
City of Trinity
NCS000502
July 30, 2021
DRAFT
Table of Contents
PART 1: INTRODUCTION ........................................................................................................................ 1
PART 2: CERTIFICATION ........................................................................................................................ 2
PART 3: MS4 INFORMATION .................................................................................................................. 3
3.1 Permitted MS4 Area ..................................................................................................................... 3
3.2 Existing MS4 Mapping ................................................................................................................. 3
3.3 Receiving Waters .......................................................................................................................... 4
3.4 MS4 Interconnection ..................................................................................................................... 5
3.5 Total Maximum Daily Loads (TMDLs) ....................................................................................... 5
3.6 Endangered and Threatened Species and Critical Habitat ............................................................ 6
3.7 Industrial Facility Discharges ....................................................................................................... 6
3.8 Non-Stormwater Discharges ......................................................................................................... 6
3.9 Target Pollutants and Sources ....................................................................................................... 7
PART 4: STORMWATER MANAGEMENT PROGRAM ADMINISTRATION ..................................... 9
4.1 Organizational Structure ............................................................................................................... 9
4.2 Program Funding and Budget ..................................................................................................... 11
4.3 Shared Responsibility ................................................................................................................. 11
4.4 Co-Permittees .............................................................................................................................. 12
4.5 Measurable Goals for Program Administration .......................................................................... 12
PART 5: PUBLIC EDUCATION AND OUTREACH PROGRAM ......................................................... 14
PART 6: PUBLIC INVOLVEMENT AND PARTICIPATION PROGRAM ........................................... 17
PART 7: ILLICIT DISCHARGE DETECTION AND ELIMINATION PROGRAM .............................. 19
PART 8: CONSTRUCTION SITE RUNOFF CONTROL PROGRAM ................................................... 24
PART 9: POST-CONSTRUCTION SITE RUNOFF CONTROL PROGRAM ........................................ 26
PART 10: POLLUTION PREVENTION AND GOOD HOUSEKEEPING PROGRAMS ...................... 31
DRAFT
List of Tables
Table 1: Summary of MS4 Mapping
Table 2: Summary of MS4 Receiving Waters
Table 3: Summary of Approved TMDLs
Table 4: Summary of Federally Listed Species/Habitat Impacted by Surface Water Quality
Table 5: NPDES Stormwater Permitted Industrial Facilities
Table 6: Non-Stormwater Discharges
Table 7: Summary of Target Pollutants and Sources
Table 8: Summary of Responsible Parties
Table 9: Shared Responsibilities
Table 10: Co-Permittee Contact Information
Table 11: Program Administration BMPs
Table 12: Summary of Target Pollutants & Audiences
Table 13: Public Education and Outreach BMPs
Table 14: Public Involvement and Participation BMPs
Table 15: Illicit Discharge Detection and Elimination BMPs
Table 16: Qualifying Alternative Program Components for Construction Site Runoff Control Program
Table 17: Construction Site Runoff Control BMPs
Table 18: Qualifying Alternative Program(s) for Post-Construction Site Runoff Control Program
Table 19: Summary of Existing Post-Construction Program Elements
Table 20: Post Construction Site Runoff Control BMPs
Table 21: Pollution Prevention and Good Housekeeping BMPs DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 1
PART 1: INTRODUCTION
The purpose of this Stormwater Management Plan (SWMP) is to establish and define the means by which
the City of Trinity will comply with its National Pollutant Discharge Elimination System (NPDES)
Municipal Separate Storm Sewer System (MS4) Permit and the applicable provisions of the Clean Water
Act to meet the federal standard of reducing pollutants in stormwater runoff to the maximum extent
practicable.
This SWMP identifies the specific elements and minimum measures that the City of Trinity will develop,
implement, enforce, evaluate and report to the North Carolina Department of Environmental Quality
(NCDEQ) Division of Energy, Minerals and Land Resources (DEMLR) in order to comply with the MS4
Permit number NCS000502, as issued by NCDEQ. This permit covers activities associated with the
discharge of stormwater from the MS4 as owned and operated by the City of Trinity and located within the
corporate limits of the City of Trinity.
In preparing this SWMP, the City of Trinity has evaluated its MS4 and the permit requirements to develop
a comprehensive 5-year SWMP that will meet the community’s needs, address local water quality issues
and provide the minimum measures necessary to comply with the permit. The SWMP will be evaluated
and updated annually to ensure that the elements and minimum measures it contains continue to adequately
provide for permit compliance and the community’s needs.
Once the SWMP is approved by NCDEQ, all provisions contained and referenced in this SWMP, along
with any approved modifications of the SWMP, are incorporated by reference into the permit and become
enforceable parts of the permit. Any major changes to the approved SWMP will require resubmittal, review
and approval by NCDEQ, and may require a new public comment period depending on the nature of the
changes.
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DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 2
PART 2: CERTIFICATION
By my signature below I hereby 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.
I am also aware that the contents of this document shall become an enforceable part of the NPDES MS4
Permit, and that both the Division and the Environmental Protection Agency have NPDES MS4 Permit
compliance and enforcement authority.
☐ I am a ranking elected official.
☐ I am a principal executive officer for the permitted MS4.
☐ I am a duly authorized representative for the permitted MS4 and have attached the authorization made
in writing by a principal executive officer or ranking elected official which specifies me as (check one):
☐ A specific individual having overall responsibility for stormwater matters.
☐ A specific position having overall responsibility for stormwater matters.
Signature:
Print
Name:
Title:
Signed this ____ day of 20____ .
DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 3
PART 3: MS4 INFORMATION
3.1 Permitted MS4 Area
This SWMP applies throughout the corporate limits of the City of Trinity, including all regulated activities
associated with the discharge of stormwater from the MS4. The map below shows the corporate limits of
the City of Trinity as of the date of this document.
3.2 Existing MS4 Mapping
The current MS4 mapping includes location of storm structures, depth, type, and flow direction. Location
of all outfalls is underway. The map is available to the public at the following address:
https://www.trinity-nc.gov/index.asp?SEC=48ADD296-1DB3-4406-9920-B9F0392467B2 DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 4
Table 1: Summary of Current MS4 Mapping
Percent of MS4 Area Mapped 43 %
No. of Major Outfalls* Mapped 30 Total
*An outfall is a point where the MS4 discharges from a pipe or other conveyance (e.g. a ditch) directly into
surface waters. Major outfalls are required to be mapped to meet permit requirements. A major outfall is
a 36-inch diameter pipe or discharge from a drainage area > 50-acres; and for industrial zoned areas a
12-inch diameter pipe or a drainage area > 2-acres.
The City is in the process of updating its MS4 map, with an illicit discharge BMP to address the data gaps.
3.3 Receiving Waters
The City of Trinity MS4 is located within the Yadkin Pee Dee River Basin and discharges directly into
receiving waters as listed in Table 2 below. Applicable water quality standards listed below are compiled
from the following NCDEQ sources:
o Waterbody Classification Map
o Impaired Waters and TMDL Map
o Most recent NCDEQ Final 303(d) List DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 5
Table 2: Summary of MS4 Receiving Waters
Receiving Water Name Stream Index
/ AU Number
Water
Quality
Classificatio
n
303(d) Listed Parameter(s)
of Interest
Uwharrie River 13-2-(0.5) WS-III
Little Uwharrie River 13-2-1 WS-III
North Hamby Creek 12-119-7-4-1 C Benthos (Nar, AL, FW)
Hunts Fork 12-119-7-3 C Benthos (Nar, AL, FW)
C – Class C (fishable/swimmable waters)
WS III – Water Supply Watershed III
Benthos (Nar, AL, FW) – Narrative standard, aquatic life, fresh waters
3.4 MS4 Interconnection
The MS4 does interconnect with the statewide NCDOT MS4 and includes:
a. The interconnection is receiving stormwater from the NCDOT MS4. The number of
interconnections is unknown.
b. The interconnection is discharging stormwater into the NCDOT MS4. The number of
interconnections is unknown.
c. The City of Trinity MS4 mapping does not identify interconnections with the NCDOT MS4.
d. The City of Trinity MS4 mapping does not include NCDOT MS4 outfalls.
3.5 Total Maximum Daily Loads (TMDLs)
The TMDL(s) listed in Table 3 below have been approved within the MS4 area, as determined by the map
and list provided on the NCDEQ Modeling & Assessment Unit web page. The table also indicates whether
the approved TMDL has a specific stormwater Waste Load Allocation (WLA) for any watershed directly
receiving discharges from the permitted MS4, and whether a Water Quality Recovery Program has been
implemented to address the WLA.
Table 3: Summary of Approved TMDLs
Water Body Name TMDL Pollutant(s)
of Concern
Stormwater Waste
Load Allocation
(Y/N)
Water Quality
Recovery
Program (Y/N)
Statewide Mercury N N
No TMDLs have been approved within the MS4 area. The Statewide TMDL for mercury does not require
any actions by the NPDES stormwater permittee because most mercury in stormwater comes from
atmospheric deposition.
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DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
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3.6 Endangered and Threatened Species and Critical Habitat
Significant populations of threatened or endangered species and/or critical habitat are identified within the
regulated MS4 urbanized area. Based upon a review of the Endangered and Threatened Species and Species
of Concern by County for North Carolina Map and Listed species believe to or known to occur in North
Carolina map as provided by the U.S. Fish and Wildlife Service, the species listed in Table 4 have the
potential to occur within the regulated MS4 urbanized area. Of those species listed, Table 4 summarizes
the species that may be significantly impacted by the quality of surface waters within their habitat.
Table 4: Potential Federally Listed Species/Habitat Impacted by Surface Water Quality
Scientific Name Common name Species Group Federal Listing Status
Danaus plexippus Monarch butterfly Invertebrate Candidate
Fusconaia masoni Atlantic pigtoe Invertebrate Proposed Threatened
Notropis mekistocholas Cape Fear shiner Vertebrate Endangered
Helianthus schweinitzii Schweinitz’s sunflower Vascular Plant Endangered
Symphyotrichum georgianum Georgia aster Vascular Plant Resolved Taxon
3.7 Industrial Facility Discharges
The City of Trinity MS4 jurisdictional area includes the following industrial facilities which hold NPDES
Industrial Stormwater Permits, as determined from the NCDEQ Maps & Permit Data web page.
Table 5: NPDES Stormwater Permitted Industrial Facilities
Permit Number Facility Name
NCGNE0700 Trinity Furniture, Inc.
NCGNE0925 Packaging Corporation of America
NCGNE1063 Fleet Painting Service, Inc.
NCS000502 Trinity City-Small MS4
3.8 Non-Stormwater Discharges
The water quality impacts of non-stormwater discharges have been evaluated by the City of Trinity as
summarized in Table 6 below. The unpermitted non-stormwater flows listed as incidental do not
significantly impact water quality. The City of Trinity has evaluated residential and charity car washing
and street washing for possible significant water quality impacts.
Wash water associated with car washing that does not contain detergents or does not discharge directly into
the MS4 is considered incidental. However, these types of non -stormwater discharges that do contain
detergents have been evaluated by the City of Trinity to determine whether they may significantly impact
water quality. The City utilizes Public Education and Outreach and Pollution Prevention and Good
Housekeeping BMPs to educate residents and municipal staff on the possible effects of detergents entering
the surface waters.
Street washing discharges are addressed under the Pavement Management Program in Part 10 of this
SWMP. The Division has not required that other non-stormwater flows be specifically controlled by the
City of Trinity. DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 7
Table 6: Non-Stormwater Discharges
Non-Stormwater Discharge Water Quality Impacts
Water line and fire hydrant flushing Incidental
Landscape irrigation Incidental
Diverted stream flows Incidental
Rising groundwater Incidental
Uncontaminated groundwater infiltration Incidental
Uncontaminated pumped groundwater Incidental
Uncontaminated potable water sources Incidental
Foundation drains Incidental
Air conditioning condensate Incidental
Irrigation waters Incidental
Springs Incidental
Water from crawl space pumps Incidental
Footing drains Incidental
Lawn watering Incidental
Residential and charity car washing Possible
Flows from riparian habitats and wetlands Incidental
Dechlorinated swimming pool discharges Incidental
Street wash water Possible
Flows from firefighting activities Incidental
3.9 Target Pollutants and Sources
In addition to those target pollutants identified above, the City of Trinity is not aware of other significant
water quality issues within the permitted MS4 area.
Table 7 below summarizes the water quality pollutants identified throughout Part 3 of this SWMP, the
likely activities/sources/targeted audiences attributed to each pollutant, and identifies the associated SWMP
program(s) that address each. In addition, the City of Trinity has evaluated schools, homeowners and
businesses as target audiences that are likely to have significant stormwater impacts.
Table 7: Summary of Target Pollutants and Sources
Target Pollutant(s) Likely Source(s)/Target Audience(s) SWMP Program Addressing
Target Pollutant(s)/Audience(s)
Litter Residential, Commercial, Schools
Public Education & Outreach,
Public Involvement &
Participation
Non-Stormwater Car
Washing Residential, Commercial, Schools
Public Education & Outreach,
Public Involvement &
Participation
Street Wash Water,
Municipal Pollutants Municipal Operations Pollution Prevention and Good
Housekeeping DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
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Sediment Construction, Commercial,
Municipal Operations
Public Education & Outreach,
Construction Site Runoff
Control, Post-Construction Site
Runoff Control, Pollution
Prevention and Good
Housekeeping
Fecal Coliform Sewer Leak, Failing Septic Systems,
Pet Waste
Public Education & Outreach,
Illicit Discharge Detection and
Elimination
Illicit Discharge/Illegal
Dumping/Improper Disposal
of Waste
Residential, Commercial, Industrial,
Municipal Operations
Public Education & Outreach,
Public Involvement &
Participation, Illicit Discharge
Detection and Elimination,
Pollution Prevention and Good
Housekeeping
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DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
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PART 4: STORMWATER MANAGEMENT PROGRAM ADMINISTRATION
4.1 Organizational Structure
The City of Trinity Stormwater Program is implemented by the Stormwater Administrator and through the
Public Services Department, both overseen by the City Manager.
City of Trinity
Stormwater Management System
Organization Chart
City Council
City Manager
Debbie Hinson
Stormwater
Administrator
Marc Allred
Public Works
Superintendent
Rodney Johnson
Public Works
Supervisor
Scottie Cooper
Public Works
Technician
Derek HensleyDRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
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Table 8: Summary of Responsible Parties
SWMP Component Responsible Position Staff Name Department
Stormwater Program
Administration
Stormwater
Administrator Marc Allred Planning
SWMP Management Stormwater
Administrator Marc Allred Planning
Public Education &
Outreach
Stormwater
Administrator Marc Allred Planning
Public Involvement &
Participation
Stormwater
Administrator Marc Allred Planning
Illicit Discharge
Detection &
Elimination
Stormwater
Administrator Marc Allred Planning
Construction Site
Runoff Control
Stormwater
Administrator Marc Allred Planning
Post-Construction
Stormwater
Management
Stormwater
Administrator Marc Allred Planning
Pollution
Prevention/Good
Housekeeping for
Municipal Operations
Stormwater
Administrator Marc Allred Planning
Municipal Facilities
Operation &
Maintenance Program
Stormwater
Administrator Marc Allred Planning
Spill Response Program Stormwater
Administrator Marc Allred Planning
MS4 Operation &
Maintenance Program
Stormwater
Administrator Marc Allred Planning
Municipal SCM
Operation &
Maintenance Program
Stormwater
Administrator Marc Allred Planning
Pesticide, Herbicide &
Fertilizer Management
Program
Stormwater
Administrator Marc Allred Planning DRAFT
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City of Trinity
July 30, 2021
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Vehicle & Equipment
Cleaning Program
Stormwater
Administrator Marc Allred Planning
Pavement Management
Program
Stormwater
Administrator Marc Allred Planning
Total Maximum Daily
Load (TMDL)
Requirements
N/A N/A N/A
4.2 Program Funding and Budget
In accordance with the issued permit, the City of Trinity shall maintain adequate funding and staffing to
implement and manage the provisions of the SWMP and comply with the requirements of the NPDES MS4
Permit. The budget includes the permit administering and compliance fee, which is billed by the Division
annually.
The Trinity Stormwater program is funded through the General Fund with an approximate 2021-2022
proposed budget of $91,175.
4.3 Shared Responsibility
The City of Trinity will share the responsibility to implement the following minimum control measures,
which are at least as stringent as the corresponding NPDES MS4 Permit requirement. The City of Trinity
remains responsible for compliance if the other entity fails to perform the permit obligation and may be
subject to enforcement action if neither the City of Trinity nor the other entity fully performs the permit
obligation. Table 9 below summarizes who will be implementing the component, what the component
program is called, the specific SWMP BMP or permit requirement that is being met by the shared
responsibility, and whether or not a legal agreement to share responsibility is in place.
Table 9: Shared Responsibilities
SWMP BMP or
Permit Requirement Implementing Entity & Program Name Legal Agreement
(Y/N)
3.2.2 and 3.2.4 Outreach to
Target Audiences, 3.3.2
Volunteer Opportunities
Piedmont Triad Regional Council (PTRC) Y
3.6.5(b) On-Site Domestic
Wastewater Treatment County Health Department N
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DRAFT NCS000502 SWMP
City of Trinity
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4.4 Co-Permittees
The are no other entities applying for co-permittee status under the NPDES MS4 permit number
NCS000502 for the City of Trinity. Table 10 summarizes contact information for each co-permittee.
Table 10: Co-Permittee Contact Information
Co-Permittee MS4 Name Contact Person Phone & E-Mail Interlocal Agreement (Y/N)
N/A N/A N/A N/A
4.5 Measurable Goals for Program Administration
The City of Trinity will manage and report the following Best Management Practices (BMPs) for the
administration of the Stormwater Management Program.
Table 11: Program Administration BMPs
Permit
Ref.
2.1.2 and Part 4: Annual Self-Assessment
Measures to evaluate the performance and effectiveness of the SWMP program components at least annually.
Results shall be used by the permittee to modify the program components as necessary to accomplish the intent
of the Stormwater Program. The self-assessment reporting period is the fiscal year (July 1 – June 30).
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
1.
Annual Self-Assessment
Perform an annual evaluation of
SWMP implementation, suitability of
SWMP commitments and any
proposed changes to the SWMP
utilizing the NCDEQ Annual Self-
Assessment Template.
1. Prepare, certify, and
submit the Annual Self-
Assessment to NCDEQ
prior to August 31 each
year.
1. Annually
Permit Years 1 – 4
1. Yes/No
Permit
Ref.
1.6: Permit Renewal Application
Measures to submit a permit renewal application no later than 180 days prior to the expiration date of the
NPDES MS4 permit.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
2.
Permit Renewal Application
Audit stormwater program
implementation for compliance with
the permit and approved SWMP and
utilize the results to prepare and
1. Participate in an
NPDES MS4 Permit
Compliance Audit, as
scheduled and performed
by EPA or NCDEQ.
1. TBD – Typically
Permit Year 4 1. Yes/No DRAFT
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City of Trinity
July 30, 2021
Page 13
Table 11: Program Administration BMPs
submit a permit renewal application
package.
2. Self-audit and
document any
stormwater program
components not audited
by EPA or NCDEQ
utilizing the DEQ Audit
Template. Submit Self-
Audit to DEMLR
(required component of
permit renewal
application package).
2. Permit Year 5 2. Yes/No/Partial
3. Certify the stormwater
permit renewal
application (Permit
renewal application
form, Self-Audit, and
Draft SWMP for the next
5-year permit cycle) and
submit to NCDEQ at
least 180 days prior to
permit expiration.
3. Permit Year 5 3. Date of permit renewal
application submittal
3.
Documentation
Evaluate existing documentation
methods to determine the best way to
document implementation of all
BMPs for annual reporting
1. Review existing
documentation methods
to determine if all
reporting metrics in the
SWMP are included
1. Permit year 1
1. Report number of
documents reviewed and
if any changes were
made
4.
Funding Assessment
Perform a fiscal analysis and explore
options to obtain adequate program
funding to fully fund the stormwater
program and meet all requirements of
the permit.
1. Complete a fiscal gap
analysis 1. Permit year 1 1. Report monetary value
of gap
2. Determine available
funding mechanisms and
evaluate options
2. Permit year 1 2. Yes/No/Status
3. Select a funding
mechanism 3. Permit years 2 3.Report funding
mechanism selected
4. Implement funding
mechanism 4. Permit years 3 4. Yes/No/Status
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DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
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PART 5: PUBLIC EDUCATION AND OUTREACH PROGRAM
The City of Trinity will implement a Public Education and Outreach Program to distribute educational
materials to the community or conduct equivalent outreach activities about the impacts of storm water
discharges on water bodies and steps the public can take to reduce pollutants in storm water runoff.
The target audiences and identified pollutants listed in Part 3.9 of this SWMP, which will be addressed by
the Public Education and Outreach Program, are summarized in Table 12 below. In addition, the City of
Trinity is required to inform businesses and the general public of the hazards associated with illicit
discharges, illegal dumping and improper disposal of waste.
Table 12: Summary of Target Pollutants & Audiences
Target Pollutants/Sources Target Audience(s)
Litter Residential, Commercial, Schools
Non-Stormwater Car Washing Residential, Commercial, Schools, Municipal Operations
Street Wash Water, Municipal Pollutants Municipal Operations
Sediment Construction, Commercial, Municipal Operations
Fecal Coliform Sewer Overflows, Failing Septic Systems, Pet Waste
Illicit Discharge/Illegal
Dumping/Improper Disposal of Waste Residential, Commercial, Industrial, Municipal Operations
The City of Trinity will manage, implement, and report the following public education and outreach BMPs.
Trinity has partnered with PTRC to implement public education and outreach and will establish a legal
agreement to continue the partnership. PTRC provides television commercials and radio advertising,
newspaper and print ads, brochures and flyers, curriculum guides for schools, movie theater ads, and
promotional items with a logo.
Table 13: Public Education and Outreach BMPs
Permit
Ref.
3.2.2 and 3.2.4: Outreach to Targeted Audiences
Measures to identify the specific elements and implementation of a Public Education and Outreach Program to
share educational materials to the community or conduct equivalent outreach activities about the impacts of
stormwater discharges on water bodies and how the public can reduce pollutants in stormwater runoff. The
permittee shall provide educational information to identified target audiences on pollutants/sources identified in
Table 12 above, and shall document the extent of exposure of each media, event or activity, including those
elements implemented locally or through a cooperative agreement.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
5.
Partnership with PTRC
Continue to engage with PTRC for
education and outreach initiatives that
will be administered by PTRC.
Initiatives will focus on residential,
commercial, and school audiences.
1. Establish 5-year legal
agreement with PTRC 1. Permit year 1 1. Yes/No/Status
2. Monitor PTRC
activities to ensure
partnership commitments
are met
2. Annually, permit years
1 – 5
2. Report number and
types of programming,
topics, and total audience
reached DRAFT
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City of Trinity
July 30, 2021
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Table 13: Public Education and Outreach BMPs
Target pollutants will include those
listed in Tables 7 and 12.
3. Review legal
agreement to determine
if target pollutants or
audiences should be
revised
3. Annually, permit years
2 – 5
3. Yes/No/Status and
report if revision is
required
4. Renew legal
agreement with PTRC or
develop alternate
program
4. Permit year 4
4. Report date renewed,
or alternate program
established
6.
City-Sponsored Events
Distribute information on stormwater
during at least one City sponsored
event or festival a year (in person or
virtually)
1. Develop or identify
one informational
handout for distribution
at the event that covers a
target pollutant or
vehicle leaks
1. Annually, permit years
1 – 5 1. Yes/No/Status
2. Staff the event/festival
chosen and document the
number of handouts
distributed
2. Annually, permit years
1 – 5
2. Report the chosen
event and number of
handouts distributed at
the event
Permit
Ref.
2.1.7, 3.2.3 and 3.6.5(c): Web Site
Measures to provide a web site designed to convey the program’s message(s) and provide online materials
including ordinances, or other regulatory mechanisms, or a list identifying the ordinances or other regulatory
mechanisms, providing the legal authority necessary to implement and enforce the requirements of the permit
and SWMP. The web page shall also provide developers with all relevant post-construction requirements,
design standards, checklists and/or other materials.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
7.
Stormwater Pages on City Website
Continue to maintain the stormwater
web pages with information
regarding relevant ordinances, post-
construction requirements, design
standards, and educational
information
1. Maintain the web
pages - update any
broken links, upload new
educational material
1. Annually, permit years
1 – 5
1. Report the date the
web page is reviewed
and updated as well as
what updates are made
2. Set a hit counter in
order to monitor
engagement and update
annually
2. Annually, permit years
1 – 5
2. Report the number of
annual hits DRAFT
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Page 16
Table 13: Public Education and Outreach BMPs
Permit
Ref.
3.2.5: Stormwater Hotline
Measures for a stormwater hotline/helpline for the purpose of public education and outreach.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
8.
Stormwater Hotline
A hotline will be maintained for
citizens to ask stormwater questions
and report stormwater issues. The
hotline number will be advertised on
the stormwater webpage
1. Establish and maintain
hotline phone number
and responsible party
1. Permit year 1 1. Yes/No/Status
2. Establish and train a
responsible party to
answer the hotline and
direct calls
2. Permit year 1
2. Report the date of
training and number
trained
3. Train responsible
parties in general
stormwater knowledge,
appropriate contacts for
stormwater questions,
and citizen opportunities
within the stormwater
program
3. Annually
3. Report the date of
training(s) and number
trained
4. Establish and maintain
a tracking mechanism to
document the number
and type of calls received
4. Permit year 1 and
annually thereafter
3. Report the number and
type of calls
5. Publicize hotline in
materials developed for
the stormwater program
and posting on
stormwater webpage
5. Annually
5. Yes/No/Status and
number of materials with
stormwater hotline
DRAFT
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City of Trinity
July 30, 2021
Page 17
PART 6: PUBLIC INVOLVEMENT AND PARTICIPATION PROGRAM
This SWMP identifies the minimum elements and implementation of a Public Involvement and
Participation Program that complies with applicable State, Tribal and local public notice requirements. The
City of Trinity will manage, implement and report the following public involvement and participation
BMPs.
Table 14: Public Involvement and Participation BMPs
Permit
Ref.
3.3.1: Public Input
Mechanisms for public involvement that provide for input on stormwater issues and the stormwater program.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
9.
Stormwater Pages on City Website
Continue to maintain the stormwater
web pages with information
regarding relevant ordinances, post-
construction requirements, design
standards, and educational
information (see BMP No. 7)
1. See BMP No. 7 1. See BMP No. 7 1. See BMP No. 7
10.
Stormwater Hotline
A hotline will be maintained for
citizens to ask stormwater questions
and report stormwater issues. The
hotline number will be advertised on
the stormwater webpage (see BMP
No. 8)
1. See BMP No. 8 1. See BMP No. 8 1. See BMP No. 8
Permit
Ref.
3.3.2: Volunteer Opportunities
Measures to provide volunteer opportunities designed to promote ongoing citizen participation.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
11.
Partnership with PTRC
Continue to engage with the PTRC to
develop volunteer opportunities that
will be administered by PTRC.
Opportunities will focus on
residential, commercial, and school
audiences. Target pollutants will
include those listed in Table 7
1. Establish legal
agreement with PTRC 1. See BMP No. 4 1. See BMP No. 4
2. Monitor PTRC
activities to ensure
partnership commitments
are met
2. See BMP No. 4 2. See BMP No. 4 DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 18
Table 14: Public Involvement and Participation BMPs
12.
City-Sponsored Volunteer Opportunities
The City will provide one City-
sponsored volunteer opportunity (in
person or virtually) such as stream
cleanups, volunteer monitoring, or
Earth Day activities at least once a
year. Residential, commercial, and
school audiences will be targeted
with special emphasis on civic
groups, large employers, and large
trade associations
1. Develop or identify
one volunteer activity
that addresses a target
pollutant or pollutants
1. Annually, permit years
1 – 5 1. Yes/No/Status
2. Coordinate and host
the activity
2. Annually, permit years
1 – 5
2. Report the event,
target audience, and
number of participants
DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 19
PART 7: ILLICIT DISCHARGE DETECTION AND ELIMINATION PROGRAM
The City of Trinity will develop, manage, implement, document, report and enforce an Illicit Discharge
Detection and Elimination Program which shall, at a minimum, include the following illicit discharge
detection and elimination BMPs.
Table 15: Illicit Discharge Detection and Elimination BMPs
Permit
Ref.
3.4.1: MS4 Map
Measures to develop, update and maintain a municipal storm sewer system map including stormwater
conveyances, flow direction, major outfalls and waters of the United States receiving stormwater discharges.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
13.
Updates to MS4 Map
Continue to update the MS4 map
with information including
stormwater conveyances, outfalls,
flow direction, and receiving waters.
Update the map annually with newly
identified or constructed stormwater
infrastructure
1. Continue mapping of
system to identify all
outfalls and flow
directions in
conveyances
1. Permit years 1 and 2
1. Report the percent of
Trinity mapped and
number of outfalls
identified
2. Add receiving waters
to the map 2. Permit year 3 2. Yes/No/Status
3. Develop process for
collecting as-built data
and incorporating into
the existing map
3. Permit year 3 3. Yes/No/Status
4. When new
conveyances/outfalls are
located or constructed
add them to the map
4. Annually, once BMP
No. 13.1 is completed
4. Report if new outfalls
were identified (Yes/No).
If yes, report number
identified during the
permit year and during
the permit term DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 20
Table 15: Illicit Discharge Detection and Elimination BMPs
Permit
Ref.
3.4.2: Regulatory Mechanism
Measures to provide an IDDE ordinance or other regulatory mechanism that provides legal authority to
prohibit, detect, and eliminate illicit connections and discharges, illegal dumping and spills into the MS4,
including enforcement procedures and actions.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
14.
Maintain Legal Authority
The City’s stormwater ordinance
(“Universal Stormwater Management
Program Ordinance” for the City of
Trinity, NC Article 1: Sec-102)
provides legal authority to prohibit,
detect, and eliminate illicit
connections and discharges, illegal
dumping, and spills into the MS4,
including enforcement procedures
and actions
1. Maintain and enforce
IDDE ordinance 1. Continuously 1. Report if ordinance
revision is required
Permit
Ref.
3.4.3: IDDE Plan
Measures to maintain and implement a written IDDE Plan to detect and address illicit discharges, illegal
dumping and any non-stormwater discharges identified as significant contributors of pollutants to the MS4.
The plan shall provide standard procedures and documentation to:
a) Locate priority areas likely to have illicit discharges,
b) Conduct routine dry weather outfall inspections,
c) Identify illicit discharges and trace sources,
d) Eliminate the source(s) of an illicit discharge, and
e) Evaluate and assess the IDDE Program.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
15.
Maintain IDDE Plan
Continue to implement the existing
written IDDE plan
1. Maintain the written
IDDE plan 1. Continuously 1. Yes/No/Status
16.
IDDE Program Evaluation
Yearly evaluation of IDDE program
to promote continuance of effective
components and improvement in
1. Evaluation meeting
with Stormwater staff
1. Annually, in
conjunction with annual
self-assessment for
permit years 1-4
1. Report any proposed
changes DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 21
Table 15: Illicit Discharge Detection and Elimination BMPs
areas that are lacking, as well as
identification of chronic violators
2. Review of IDDE
reports and identification
of chronic violators,
issues, and/or “hot-spot”
areas
2. Annually, in
conjunction with annual
self-assessment for
permit years 1-4
2. Report (a) number of
potential illicit
discharges found,
(b) number of illicit
discharges verified,
(c) number of illicit
discharges
resolved/removed,
(d) number of
enforcement actions
taken, and (e) number of
chronic violators/“hot
spots” identified
17.
Outfall Inspections
Perform regular dry weather (no
precipitation in previous 72 hours)
outfall inspections to proactively
identify illicit discharges and illicit
connections
1. Train inspections staff
to perform dry weather
outfall inspections and
illicit discharge
investigations
1. See BMP No. 19 1. See BMP No. 19
2. Perform inspections of
20% of outfalls as
described in the IDDE
plan
2. Annually, permit years
1 – 5
2. Report the number of
outfalls inspected, and
number of potential illicit
discharges identified
Permit
Ref.
3.4.4: IDDE Tracking
Measures for tracking and documenting the date(s) an illicit discharge, illicit connection or illegal dumping was
observed, the results of the investigation, any follow-up of the investigation, the date the investigation was
closed, the issuance of enforcement actions, and the ability to identify chronic violators.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
18.
Tracking Spreadsheet
A tracking system for observed IDDE
violations and follow-on actions will
be developed and implemented in
order to identify “hot-spot” areas,
chronic violators, and recurring
issues (see BMP No. 3)
1. See BMP No. 3 1. See BMP No. 3 1. See BMP No. 3
2. Annually evaluate
observed violations for
chronic violators
2. See BMP No. 16 2. See BMP No. 16 DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 22
Table 15: Illicit Discharge Detection and Elimination BMPs
Permit
Ref.
3.4.5: Staff IDDE Training
Measures to provide training for municipal staff and contractors who, as part of their normal job
responsibilities, may observe an illicit discharge, illicit connection, illegal dumping or spills. Training shall
include how to identify and report illicit discharges, illicit connections, illegal dumping and spills. Each staff
training event shall be documented, including the agenda/materials, date, and number of staff participating.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
19.
Staff Training
Provide training to educate City staff
of indicators of potential illicit
discharges/ connections and illegal
dumping and the appropriate avenues
through which to report suspected
illicit discharge
1. Identify or develop
staff training for public
services employees
1. Permit year 1 1. Yes/No/Status
2. Train staff with Illicit
Discharge & Detection
responsibilities
2. Annually,
permit years 1-5 2. Report number trained
3. Train staff with the
potential to discover an
illicit discharge during
routine work activities
3. Annually,
permit years 1-5 3. Report number trained
Permit
Ref.
3.4.6: IDDE Reporting
Measures for the public and staff to report illicit discharges, illegal dumping and spills. The mechanism shall be
publicized to facilitate reporting and shall be managed to provide rapid response by appropriately trained
personnel.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
20.
Stormwater Pages on City Website
Continue to maintain the stormwater
web pages with information
regarding relevant ordinances, post-
construction requirements, design
standards, and educational
information (see BMP No. 7)
1. See BMP No. 7 1. See BMP No. 7 1. See BMP No. 7 DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 23
Table 15: Illicit Discharge Detection and Elimination BMPs
21.
Stormwater Hotline
A hotline will be maintained for
citizens to ask stormwater questions
and report stormwater issues. The
hotline number will be advertised on
the stormwater webpage (see BMP
No. 8)
1. See BMP No. 8 1. See BMP No. 8 1. See BMP No. 8
DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 24
PART 8: CONSTRUCTION SITE RUNOFF CONTROL PROGRAM
In accordance with 15A NCAC 02H .0153, the City of Trinity relies upon the North Carolina Sedimentation
Pollution Control Act (SPCA) of 1973 as a qualifying alternative program to meet a portion of the NPDES
MS4 Permit requirements for construction site runoff control measures. The SPCA requirements include
reducing pollutants in stormwater runoff from construction activities that result in land disturbance of
greater than or equal to one acre, and includes any construction activity that is part of a larger common plan
of development that would disturb one acre or more. The state SPCA Program is either delegated to a
city/town, delegated to a county, or implemented by NCDEQ in non-delegated areas.
Table 16: Qualifying Alternative Program Components for Construction Site Runoff Control Program
Permit
Reference State or Local Program Name Legal Authority Implementing
Entity
3.5.1 -
3.5.4
State Implemented SPCA
Program 15A NCAC Chapter 04 NCDEQ
2
The City of Trinity also implements the following BMPs to meet NPDES MS4 Permit requirements.
Table 17: Construction Site Runoff Control BMPs
Permit
Ref.
3.5.6: Public Input
Measures to provide and promote a means for the public to notify the appropriate authorities of observed
erosion and sedimentation problems.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
22.
Municipal Staff Training
Train municipal staff who receive
calls from the public on the protocols
for referral and tracking of
construction site runoff control
complaints.
1. Train municipal staff
on proper handling of
construction site runoff
control complaints.
1. Annually 1. Number of staff
trained
2. Document the number
of violations identified
and referred to NCDEQ
2. Annually 2. Report number of
violations referred
23.
Stormwater Hotline
A hotline will be maintained for
citizens to ask stormwater questions
and report stormwater issues. The
hotline number will be advertised on
the stormwater webpage (see BMP
No. 8)
1. See BMP No. 8 1. See BMP No. 8 1. See BMP No. 8 DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 25
Table 17: Construction Site Runoff Control BMPs
Permit
Ref.
3.5.5: Waste Management
Measures to require construction site operators to control waste such as discarded building materials, concrete
truck washout, chemicals, litter, and sanitary waste at the construction site that may cause adverse impact to
water quality.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
24.
Establish and Maintain Legal Authority
Develop and implement an ordinance
to require construction site operators
to control waste
1. Pass code 1. Permit year 2 1. Yes/No/Status
2. Maintain legal
authority
2. Continuously, after
ordinance is adopted 2. Yes/No/Status
25.
Contractor Education
Communicate waste management
requirements to construction site
operators
1. Identify/develop fact
sheet to share at pre-
construction meetings
1. Permit year 3, after
ordinance is adopted 1. Yes/No/Status
2. Add fact sheet to
website
2. Permit year 3, after
ordinance is adopted 2. Yes/No/Status
3. Distribute fact sheet
during final review
meetings or pre-
construction meetings
3. Permit year 3, after
ordinance is adopted
3. Number of fact sheets
distributed
DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 26
PART 9: POST-CONSTRUCTION SITE RUNOFF CONTROL PROGRAM
This SWMP identifies the minimum elements to develop, implement and enforce a program to address
stormwater runoff from new development and redevelopment projects that disturb greater than or equal to
one acre, including projects less than one acre that are part of a larger common plan of development or sale,
that are located within the City of Trinity and discharge into the MS4. These elements are designed to
minimize water quality impacts utilizing a combination of structural Stormwater Control Measures (SCMs)
and/or non-structural BMPs appropriate for the community and ensure adequate long-term operation and
maintenance of SCMs.
In accordance with 15A NCAC 02H .0153 and .1017, the City of Trinity implements the following State
post-construction program requirements, which satisfy the NPDES Phase II MS4 post-construction site
runoff control requirements as Qualifying Alternative Programs (QAPs) in the MS4 area(s) where they are
implemented.
Table 18: Qualifying Alternative Program(s) for Post-Construction Site Runoff Control Program
State QAP Name State Requirements Local Ordinance / Regulatory
Mechanism Reference
Water Supply Watershed (WS-III) 15A NCAC 2B
.0620 - .0624
“The Universal Stormwater
Management Program Ordinance”
for the City of Trinity, NC Article
3: Sec-308
Universal Stormwater Management
Program 15A NCAC 2H .1020
“The Universal Stormwater
Management Program Ordinance”
for the City of Trinity, NC
2
The City of Trinity has existing requirements other than Qualifying Alternative Program(s) for
implementation of the NPDES Phase II MS4 post-construction program requirements. These existing
requirements are codified in local ordinance(s), and implementation is further defined in guidance, manuals
and/or standard operating procedure(s) as summarized in Table 19 below.
DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 27
Table 19: Summary of Existing Post-Construction Program Elements
Permit Requirements for
Plan Review and Approval
Municipal Ordinance/Code Reference(s)
and/or Document Title(s) Date Adopted
3.6.2(a) Authority USWMPO Article 1: Sec-102 09/02/2011
3.6.3(a) & 15A NCAC 02H.0153(c)
Federal, State & Local Projects USWMPO Article 2: Sec-204 09/02/2011
3.6.3(b) Plan Review USWMPO Article 2: Sec-202 09/02/2011
3.6.3(c) O&M Agreement USWMPO Article 4: Sec-402 09/02/2011
3.6.3(d) O&M Plan USWMPO Article 4: Sec-403 09/02/2011
3.6.3(e) Deed
Restrictions/Covenants USWMPO Article 4: Sec-405(A) 09/02/2011
3.6.3(f) Access Easements USWMPO Article 4: Sec-408 09/02/2011
Permit Requirements for
Inspections and Enforcement
Municipal Ordinance/Code Reference(s)
and/or Document Title(s) Date Adopted
3.6.2(b) Documentation USWMPO Article 4: Sec-401, Sec-406 09/02/2011
3.6.2(c) Right of Entry USWMPO Article 5: Sec-503(B) 09/02/2011
3.6.4(a) Pre-CO Inspections USWMPO Article 2: Sec-203(D) 09/02/2011
3.6.4(b) Compliance with Plans USWMPO Article 4: Sec-401, Article 5:
Sec-501 09/02/2011
3.6.4(c) Annual SCM Inspections USWMPO Article 4: Sec-403 09/02/2011
3.6.4(d) Low Density Inspections Permit Year 2
3.6.4(e) Qualified Professional USWMPO Article 3: Sec-305 09/02/2011
Permit Requirements for
Fecal Coliform Reduction
Municipal Ordinance/Code Reference(s)
and/or Document Title(s) Date Adopted
3.6.6(a) Pet Waste USWMPO Article 3: Sec-308(1)(b) 09/02/2011
3.6.6(b) On-Site Domestic
Wastewater Treatment
City of Trinity Subdivision Ordinance
Article VII: Section 7-4(E) 08/14/2017
City of Trinity Flood Damage Prevention
Ordinance Article 5: Section A(10) 01/02/2008
USWMPO = Universal Stormwater Management Program Ordinance for the City of Trinity, NC
The annual reporting metrics for the post construction program are provided in Table 20: Post
Construction Site Runoff Control BMPs below.
DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 28
Table 20: Post Construction Site Runoff Control BMPs
Permit
Ref.
3.6.5(a), 3.6.5(b), and 4.1.3: Minimum Post-Construction Reporting Requirements
Measures to document activities over the course of the fiscal year (July 1 – June 30) including appropriate
information to accurately describe progress, status, and results.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
26.
Standard Reporting
Implement standardized tracking,
documentation, inspections and
reporting mechanisms to compile
appropriate data for the annual self-
assessment process. Data shall be
provided for each Post-Construction/
Qualifying Alternative Program
being implemented as listed in Tables
18 and 19.
1. Track number of low
density and high density
plan reviews performed
1. Continuously,
permit years 1-5
1. Number of plan
reviews performed for
low density and high
density
2. Track number of low
density and high density
plans approved
2. Continuously,
permit years 1-5
2. Number of plan
approvals issued for low
density and high density
3. Maintain a current
inventory of low density
projects and constructed
SCMs including SCM
type or low density
acreage, location and last
inspection date
3. Continuously,
permit years 1-5
3. Summary of number
and type of SCMs added
to the inventory; and
number and acreage of
low density projects
constructed
4. Track number of SCM
inspections performed
4. Continuously,
permit years 1-5
4. Number of SCM
inspections
5. Track number of low
density inspections
performed
5. Continuously,
permit years 1-5
5. Number of low density
projects inspected
6. Track number and
type of enforcement
actions taken
6. Continuously,
permit years 1-5
6. Number of
enforcement actions
issued
Permit
Ref.
2.3 and 3.6: Qualifying Alternative Program(s)
Measures to develop, implement and enforce additional BMPs in order to comply with the QAP state program
requirements.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
The QAP requirements are fully met by the existing QAP for post-construction, see references provided in Table 18 DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 29
Table 20: Post Construction Site Runoff Control BMPs
Permit
Ref.
3.6.2: Legal Authority
Measures to maintain adequate legal authorities through ordinance or other regulatory mechanism to: (a) review
designs and proposals for new development and redevelopment to determine whether adequate stormwater
control measures will be installed, implemented, and maintained, (b) request information such as stormwater
plans, inspection reports, monitoring results, and other information deemed necessary to evaluate compliance
with the Post-Construction Stormwater Management Program, and (c) enter private property for the purpose of
inspecting at reasonable times any facilities, equipment, practices, or operations related to stormwater
discharges to determine whether there is compliance with the Post-Construction Stormwater Management
Program.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
This permit requirement is fully met by the existing post-construction program, see references provided in Table 19
Permit
Ref.
3.6.3: Plan Review and Approval
Measures to maintain plan review and approval authority, standards and procedures to: (a) Require Federal,
State, and local government projects to comply with Post-Construction Program requirements throughout the
entire MS4 permitted area, unless the entity is subject to its own NPDES MS4 permit or a qualifying alternative
program, (b) Conduct site plan reviews of all new development and redeveloped sites that disturb greater than
or equal to one acre, and sites that disturb less than one acre that are part of a larger common plan of
development or sale for compliance with 15A NCAC 02H .1017 and the qualifying alternative programs that
apply within your jurisdiction, (c) Ensure that each project has an Operation and Maintenance Agreement that
complies with 15A NCAC 02H .1050(12), (d) Ensure that each project has an Operation and Maintenance Plan
that complies with 15A NCAC 02H .1050(13), (e) Ensure that each project has recorded deed restrictions and
protective covenants, that require the project to be maintained consistent with approved plans, and (f) Ensure
that each SCM and associated maintenance accesses be protected in a permanent recorded easement per 15A
NCAC 02H 1050 (9) and (10).
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
This permit requirement is fully met by the existing post-construction program, see references provided in Table 19
Permit
Ref.
3.6.4: Inspections and Enforcement
Measures to maintain inspection and enforcement authority, standards and procedures to: (a) Conduct post-
construction inspections prior to issuing a Certificate of Occupancy or a Temporary Certificate of Occupancy.
Alternatively, the project owner may provide a surety bond to guarantee compliance with the approved plan(s),
(b) Ensure that the project has been constructed in accordance with the approved plan(s), (c) Ensure annual
inspection of each permitted SCM to ensure compliance with the approved Operation and Maintenance
Agreement, (d) Ensure inspection of low density projects at least once during the permit term, and (e) Require
that inspections be conducted by a qualified professional. DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 30
Table 20: Post Construction Site Runoff Control BMPs
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
27.
Revisions to Code of Ordinances
Revise existing ordinance to
specifically require inspection of low-
density projects
1. Revise code to require
inspection of low-density
projects at least once
during the permit term
by a qualified
professional
1. Permit year 2 1. Report code reference
and date adopted
Permit
Ref.
3.6.6: Fecal Coliform Reduction
Measures to control, to the maximum extent practicable, sources of fecal coliform per 15A NCAC 02H
.1017(7). At a minimum, the program shall include: (a) A pet waste management component, which may be
achieved by revising an existing litter ordinance, and (b) An on-site domestic wastewater treatment system
component, if applicable, which may be coordinated with local county health department, to ensure proper
operation and maintenance of such systems.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
This permit requirement is fully met by the existing post-construction program, see references provided in Table 19
DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 31
PART 10: POLLUTION PREVENTION AND GOOD HOUSEKEEPING PROGRAMS
This SWMP provides a comprehensive pollution prevention and good housekeeping strategy for the City
of Trinity municipal facilities and operations. Pollution prevention and good housekeeping (PPGH) is
accomplished through the implementation of seven required programs, which collectively address the
ultimate goal of preventing or reducing pollutant runoff from municipal operations such as parks and open
space maintenance, fleet and building maintenance, new construction and land disturbances, and municipal
storm sewer system maintenance.
Pollution prevention and good housekeeping for municipal operations includes the following programs:
1. Municipal Facilities Operation and Maintenance Program
2. Spill Response Program
3. MS4 Operation and Maintenance Program
4. Municipal SCM Operation and Maintenance Program
5. Pesticide, Herbicide and Fertilizer Management Program
6. Vehicle and Equipment Maintenance Program
7. Pavement Management Program
The City of Trinity will manage, implement and report the pollution prevention and good housekeeping
BMPs as specified in Table 21 below for each required program.
Table 21: Pollution Prevention and Good Housekeeping BMPs
Permit
Ref.
3.7.1: Municipal Facilities Operation and Maintenance Program
Measures to manage facilities that are owned and operated by the permittee and have the potential for generating polluted
stormwater runoff. The permittee shall maintain a current inventory of municipal facilities; perform facility inspections
and routine maintenance; establish specific frequencies, schedules, and standard documentation; provide staff training on
general stormwater awareness and implementing pollution prevention and good housekeeping practices.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
28.
Municipal Facilities Operation and Maintenance Program Plan
Continue to implement the existing
written plan and evaluate annually
1. Maintain the written
plan 1. Continuously 1. Yes/No/Status
2. Evaluate annually with
Stormwater staff
2. Annually, in
conjunction with annual
self-assessment for
permit years 1-4
2. Report any proposed
changes
29.
Staff Training
Develop or identify a staff training
program for general stormwater
pollution prevention/spill
1. Identify or develop
staff training program for
municipal employees
1. Permit year 1 1. Yes/No/Status DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 32
Table 21: Pollution Prevention and Good Housekeeping BMPs
response/fertilizer training/pavement
management and overview of the
PPGH plans and provide to
appropriate utilities and public works
employees
2. Train staff with PPGH
responsibilities, street
sweeping
responsibilities, and staff
that work at municipal
equipment
2. Annually, permit years
1 - 5 2. Report number trained
Permit
Ref.
3.7.2: Spill Response Program
Measures for facilities and operations that store and/or use materials that have the potential to contaminate stormwater
runoff if spilled. The permittee shall maintain written spill response procedures and train staff on spill response
procedures.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
30.
Spill Response Procedures
Develop and maintain a list of city
facilities and operations storing
materials that would be a pollutant if
spilled and introduced to the
stormwater system and classify by
hazard and quantity. Develop spill
response procedures for these
facilities
1. Train staff at facilities
with potential for high
hazard spills in first
response actions and
reporting procedures
1. See BMP No. 29 1. See BMP No. 29
2. Evaluate procedures
annually with
Stormwater staff
2. Annually, in
conjunction with annual
self-assessment for
permit years 1-4
2. Report any proposed
changes
Permit
Ref.
3.7.3: MS4 Operation and Maintenance Program
Measures to minimize pollutants in the stormwater collection system. The permittee shall provide operation and
maintenance staff training on stormwater awareness and pollution prevention, perform MS4 inspections, maintain the
collection system including catch basins and conveyances; and establish specific frequencies, schedules, and standard
documentation.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
31.
MS4 System Inspections and Maintenance Plan
Develop a proactive plan for MS4
system maintenance, requiring
regular inspections and maintenance
1. Develop a SOP that
includes proactive
inspection schedules,
standard documentation,
staff responsibilities, and
proper maintenance
training
1. Permit year 2 1. Yes/No/Status
2. Perform MS4
inspections and
maintenance
2. Perform in accordance
with schedule adopted in
the plan
2. Report the number of
inspections performed
and the number of issues
remedied DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 33
Table 21: Pollution Prevention and Good Housekeeping BMPs
Permit
Ref.
3.7.4: Municipal SCM Operation and Maintenance Program
Measures to manage municipally-owned, operated, and/or maintained structural stormwater control measures (SCMs) that
are installed for compliance with the permittee’s post-construction program. The permittee shall maintain a current
inventory of SCMs, perform SCM inspections and maintenance, and shall establish specific frequencies, schedules, and
documentation.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
32.
Pollution Prevention and Good Housekeeping (PPGH) Plan
Continue to implement the existing
written plan and evaluate annually
1. Maintain the written
plan 1. Continuously 1. Yes/No/Status
2. Evaluate annually with
Stormwater staff
2. Annually, in
conjunction with annual
self-assessment for
permit years 1-4
2. Report any proposed
changes
Permit
Ref.
3.7.5: Pesticide, Herbicide and Fertilizer Management Program
Measures to minimize water quality impacts from the use of landscape chemicals. The permittee shall provide routine
pollution prevention and chemical use, storage and handling training, and shall ensure compliance with permits and
applicator certifications.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
33.
Applicator Training
Continue training of City staff who
apply landscape chemicals and are
required to attend certification classes
1. Require staff to
maintain certifications
and verify
1. Annually, permit years
1-5
1. Report number of staff
certified
34.
Staff Training
Develop or identify a staff training
program for general stormwater
pollution prevention/spill
response/fertilizer training and
overview of the PPGH plan and
provide to public services department
employees (see BMP No. 29)
1. See BMP No. 29 1. See BMP No. 29 1. See BMP No. 29 DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 34
Table 21: Pollution Prevention and Good Housekeeping BMPs
Permit
Ref.
3.7.6: Vehicle and Equipment Maintenance Program
Measures to prevent and minimize contamination of stormwater runoff from areas used for municipal vehicle and
equipment maintenance and/or cleaning. The permittee shall ensure that municipal industrial facilities subject to NPDES
industrial permitting comply with those permit requirements, provide routine pollution prevention training to staff,
perform routine inspections, and establish specific frequencies, schedules, and documentation.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
35.
NPDES Industrial Permit Compliance
Ensure that NPDES industrial permit
compliance occurs at all applicable
municipally owned sites
1. Review municipal
facilities inventory to
determine which
facilities require a
NPDES permit
1. Permit year 1
1. Number of facilities
determined to require a
NPDES Industrial Permit
2. Permitting of
municipally owned
facilities; apply for new
permits and confirm that
all existing permits are
valid. Renew permits as
required
2. Permit year 1,
following review of
facilities, and
continuously thereafter
2. Report number of new
permits received or
renewed as well as
number of active
permits.
3. Establish NPDES
Industrial Permit
tracking mechanism to
document list of
municipally owned
facilities with permit,
permit expiration dates,
and inspections
3. See BMP No. 3 3. See BMP No. 3
36.
Vehicle and Equipment Cleaning and Maintenance Facility Inspection
Routine inspections as part of general
facility inspections (see BMP No. 28)
to ensure that vehicle and equipment
facilities are following proper
procedures to minimize water quality
impacts from vehicle and equipment
cleaning and maintenance
1. See BMP No. 28 1. See BMP No. 28 1. See BMP No. 28
37.
Vehicle and Equipment Cleaning and Maintenance Facility Staff Training
Develop or identify a staff training
program for general stormwater
pollution prevention/spill
response/fertilizer training and
overview of the PPGH plan and
provide to public services department
employees (see BMP No. 29)
1. See BMP No. 29 1. See BMP No. 29 1. See BMP No. 29 DRAFT
DRAFT NCS000502 SWMP
City of Trinity
July 30, 2021
Page 35
Table 21: Pollution Prevention and Good Housekeeping BMPs
Permit
Ref.
3.7.7: Pavement Management Program
Measures to reduce pollutants in stormwater runoff from municipally-owned streets, roads, and parking lots within the
permittee’s corporate limits. The permittee shall implement measures to control litter, leaves, debris, particulate and fluid
pollutants associated with vehicles, and establish specific frequencies, schedules, and documentation.
BMP
No.
A B C D
Description of BMP Measurable Goal(s) Schedule for
Implementation
Annual Reporting
Metric
38.
Street Sweeping
Develop a plan to perform street
sweeping following a regular
schedule in order to reduce pollutants
from City owned and maintained
streets.
1. Develop an SOP,
including a schedule and
plan to document
1. Permit year 1 1. Yes/no/status
2. Implement SOP and
documentation
2. Annually, beginning in
permit year 2
2. Total number of street
miles swept
39.
Leaf Collection
Develop a plan to perform periodic
collection of leaves from residential
and public areas to reduce pollutants
and clogging of storm system inlets.
1. Develop an SOP,
including a schedule and
plan to document
1. Permit year 1 1. Yes/no/status
2. Implement SOP and
documentation
2. Regularly, beginning
in permit year 2
2. Volume of leaves
collected (tons)
40.
Vehicle Spill Cleanup
An organized vehicle spill cleanup
response to prevent pollutants from
vehicular accidents from entering the
storm drain system.
1. Maintain spill
response procedures (See
BMP No. 30)
1. See BMP No. 30 1. See BMP No. 30
2. Provide public
education about stopping
vehicle leaks (See BMP
No. 6)
2. See BMP No. 6 2. See BMP No. 6
DRAFT