NCS000502_Final SWMP_20231114

Final Stormwater Management Plan
City of Trinity
NCS000502
November 14, 2023
,1
s � 1

Table of Contents
PART1: INTRODUCTION........................................................................................................................I
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.......................................................................................................8
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..............................................................................................................................11
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...................................................23
PART 9: POST-CONSTRUCTION SITE RUNOFF CONTROL PROGRAM........................................24
PART 10: POLLUTION PREVENTION AND GOOD HOUSEKEEPING PROGRAMS......................29

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 l l: 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-Constriction 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

PART 1: INTRODUCTION
The purpose of this Stonnwater 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.
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page I

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,hue,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: rn , ,
Signed this day of20 aO-ZZ
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 2

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.
r City of Trinity
r � r
TWy z am
F.tn.) :bU
qq /'
fl
�1 f
-
+i
1,
r �-
4
r� o-
r Y ll'y I! �ZonYyolibra
EM
I j v
1 r IA X
i� �- f; aem R� f .wrz
e'F F�wcu. IaYs
a'
i
1 >
3.2 Existing MS4 Mapping
The current MS4 mapping includes location of storm strictures,depth,type,and flow direction.Location
of all outfalls is underway. The map is available to the public at the following address:
https://w,Armt.ti-iiiity-nc.gov/public-works/page/stormwater-map
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 3

f
BMP — Swale r��=t.0M f.,
Outfa• Berm is- °Stonnwater Pipe City of Trinity
Berm —Curb ,„ a }
Ditch Culvert Official Stormwater Map
OTrinity Boundary Line
Table 1: Summary of Current MS4 Mapping
Percent of MS4 Area Mapped 43 %
No.of Major Outfalls*Mapped 30 Total
*Art outfall is a point where the MS4 discharges front a pipe or other conveyance(e.g. a ditch)directly into
swyf ee waters. Major outfalls are required to he napped to meet per-init requirements. A major outfall is
a 36-inch diameter pipe or discharge frron 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
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 4

Table 2: Summary of MS4 Receiving Waters
Receiving Water Name Stream Index/ Water Quality 303(d) Listed Parameter(s)
AU Number Classification of Interest
Uwharric 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 Ill—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
TMDL Pollutant(s) Stornnvater Waste Water Quality
Water Body Name Load Allocation Recovery Program
of Concern Y/N 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.
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 5

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 believed to be known 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 Threatened
Helianthus schweinitzii Schweinitz's sunflower Vascular Plant Endangered
Notropis mekistocholas Cape Fear shiner Vertebrate Endangered
Perimyotis subflavus Tricolored Bat Mammal Proposed Endangered
Symphyotrichum georgianum Georgia aster Vascular Plant Candidate
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
NCGIO0140 Guil-Rand Auto Salvage
NCS0001333 Jowat Corporation
NCGNE0700 Trinity Furniture
NCGNE0291 Novamelt Americas
NCGNC1295 Henkel Corporation
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
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 6

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.
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
Infigation 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
Dechlorhrated swimming pool discharges Incidental
Street wash water Possible
Flows from firefighting activities Incidental
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 7

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 stornwater impacts.
Table 7: Summary of Target Pollutants and Sources
Target Pollutant(s) Likely Source(s)/ SWMP Program Addressing
Target Audience(s) Target Pollutant(s)/Audience(s)
Litter Residential,Commercial,Schools Public Education&Outreach,Public
Involvement&Participation
Non-Stormwater Car Schools Public Education&Outreach,Public
Washing Residential,Commercial, Involvement&Participation
Street Wash Water, Municipal Operations Pollution Prevention and Good
Municipal Pollutants Housekeeping
Public Education&Outreach,
Construction Commercial Construction Site Runoff Control,
Sediment Municipal Operations Post-Construction Site Runoff
Control,Pollution Prevention and
Good Housekeeping
Fecal Coliform Sewer Leak,Failing Septic Public Education&Outreach,Illicit
Systems,Pet Waste Discharge Detection and Elimination
Public Education&Outreach, Public
Illicit Discharge/Illegal Residential,Commnercial, Involvement&Participation,Illicit
Dumping/Improper Industrial Municipal Operations Discharge Detection and
Disposal of Waste Elimination,Pollution Prevention
and Good Housekeeping
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 8

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
~Stevie ,ox�m
w
Rodne 7onson Rodne� y y Johnson Jill Wood h
df
Scottie Cooper.
Derek Hensley
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 9

Table 8: Summary of Responsible Parties
SWMP Component Responsible Position Staff Name Department
Stormwater Program Stormwater Administrator Rodney Johnson Public Works
Administration
SWMP Management Stormwater Administrator Rodney Johnson Public Works
Public Education&Outreach Stormwater Administrator Rodney Johnson Public Works
Public Involvement& Stormwater Administrator Rodney Johnson Public Works
Participation
Illicit Discharge Detection& Public Works Rodney Johnson Public Works
Elimination Superintendent
Construction Site Runoff Control NCDEQ NCDEQ NCDEQ
Post-Construction Stormwater Planning and Zoning Jill Wood Planning and Zoning
Management Director
Pollution Prevention/Good Stormwater Administrator Rodney Johnson Public Works
Housekeeping
Municipal Facilities Operation& Stormwater Administrator Rodney Johnson Public Works
Maintenance Program
Spill Response Program Fire Chief Michael Johnson Fire
MS4 Operation&Maintenance Stormwater Administrator Rodney Johnson Public Works
Program
Municipal SCM Operation& Stormwater Administrator Rodney Johnson Public Works
Maintenance Program
Pesticide,Herbicide&Fertilizer Stormwater Administrator Rodney Johnson Public Works
Management Program
Vehicle&Equipment Cleaning Stormwater Administrator Rodney Johnson Public Works
Program
Pavement Management Program Stormwater Administrator Rodney Johnson Public Works
Total Maximum Daily Load Stormwater Administrator Rodney Johnson Public Works
(TMDL)Requirements
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 10

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 administration and compliance fee,which is billed by the Division
annually.
The Trinity Stoi7nwater program is funded through the General Fund with an approximate 2023-2024
budget of$220,490.
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 Implementing Entity&Program Name Legal Agreement
Permit Requirement (YIN)
3.2.2 and 3.2.4 Outreach to
Target Audiences,3.3.2 Piedmont Triad Regional Council(PTRC) Y
Volunteer Opportunities
3.6.5(b)On-Site Domestic
County Health Department N
Wastewater Treatment
4.4 Co-Permittees
There 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 inforniation 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
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page I I

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
2.1.2 Program Implementation
Permit Measures to evaluate the performance and effectiveness of the SWMP program components at least annually.
Ref. Results shall be used by the permittee to modify the program components as necessary to accomplish the intent
of the Stormwater Program,
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Annual Self-Assessment
Evaluate the performance and 1.Prepare,conduct and 1.Annually 1.Yes/No
effectiveness of the program document an annual Permit Years 1—5
components at least annually.Results evaluation of the program
1 shall be used to modify the program components.
components as necessary to
accomplish the intent of the
Storrawater Program
1.6: Permit Renewal Application
Permit Measures to submit a permit renewal application no later than 180 days prior to the expiration date of the
Ref. NPDES MS4 permit.
BMP
A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Permit Renewal Application
Submit a permit renewal application 1.Draft SWMP 1.Permit Year 5 1.Yes/No
and Draft SWMP no later than 180 applicable to the
prior to permit expiration proceeding 5 years
following permit re-
issuance.
2.Certify the stormwater 2.Permit Year 5 2.Date of permit renewal
permit renewal application submittal
2. application(Permit
renewal application form
and Draft SWMP for the
next 5-year permit cycle)
and submit to NCDEQ at
least 180 days prior to
permit expiration.
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 12

Table 11: Program Administration BMPs
Documentation
Evaluate existing documentation 1.Review existing 1. Permit Year 1 1. Yes/No
methods to determine the best way to documentation methods
document implementation of all to determine if all
BMPs for annual reporting(e.g, reporting metrics in the
Excel spreadsheets).Create written SWMP are included
procedures for each minimum control 2.Create written 2. Permit Year 1 2. Yes/No
3• measure that account for procedures for
documentation method and review documentation for each
annually to determine if method is minimum control
sufficient for tracking all BMPs measure
3.Review documentation 3.Annually—Permit 3.Yes/No
methods and written Years l —5
procedures annually and
update if needed
Funding Assessment
Perform a fiscal analysis and explore 1.Complete a fiscal gap 1. Permit Year 1 1.Yes/No;
options to obtain adequate program analysis and evaluate Adequate/Inadequate
4• funding to support the stormwater options to fund program
program and comply with all 2.Select and implement 2.Permit Year 2 2.Yes/No
requirements of the permit. a finding mechanism
Im lement the chosen mechanism
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 13

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 connmunity 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 Residential,Commercial, Industrial,Municipal Operations
Dumping/Improper Disposal of Waste
The City of Trinity will manage,implement,and report the following public education and outreach BMPs.
Table 13:Public Education and Outreach BMPs
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
Permit Ref. 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 throw h a cooperative agreement.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Partnership with Piedmont Triad Regional Council(PTRC)
Continue to engage with PTRC for 1.Establish legal 1. Permit Year 1 1.Yes/No
education and outreach initiatives that agreement with PTRC
5, will be administered by PTRC under that meets permit
a legal agreement.PTRC currently requirements
provides mass media services that 2.Monitor PTRC 2.Annually—Permit 2.Yes/No
include television commercials,radio activities to ensure Years 1—5
advertising,newspaper and print ads, partnership commitments
brochures and flyers. PTRC also are met
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 14

Table 13: Public Education and Outreach BMPs
provides direct education services 3.Review legal 3.Annually—Permit 3.Yes/No
which include options for library, agreement to determine Years 2—5
school,surruner camp,farmers if target pollutants or
market,and other in-person audiences should be
educational events.Target pollutants revised,or if an alternate
discussed will include those listed in program should be
Tables 7 and 12 created or joined to meet
outreach requirements
4.PTRC will provide a 4.Annually—Permit 4.Date of event;Target
minimum of 1 in person Years 1 —5 pollutant campaign topic
educational outreach
event,and 1 target
pollutant mass media
campaign
City-Sponsored Events
Distribute information on stormwater 1.Develop or identify 1.Annually—Permit 1.Yes/No
during at least one City-sponsored one informational Years 1—5
event(e.g.council meeting,chili handout for distribution
cookoff or similar). at the event that covers a
6. target pollutant or
vehicle leaks
2.Staff the event/festival 2.Annually—Permit 2.Number of handouts
chosen and document the Years I —5 distributed at the event
number of handouts
distributed
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
Permit including ordinances,or other regulatory mechanisms,or a list identifying the ordinances or other regulatory
Ref. 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 A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Stormwater Webpages on City Website
Maintain the stormwater Nvebpages 1.Maintain,review,and 1.Annually—Permit 1.Date of review and
on the City website to provide update the stormwater Years 1—5 date updated(if required)
information regarding the stormwater wbpages,check for
program,MS4 permit requirements, broken links,and upload
7. SWMP,applicable ordinances and new material as needed
design standards,hot line phone
number,links to state Erosion
Control information,and links to
PTRC information.
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 15

Table 13:Public Education and Outreach BNlPs
Permit 3.2.5: Stormwater Hotline
Ref. Measures for a stormwater hotline/helpline for the purpose of public education and outreach.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Stormwater Hotline
A hotline will be maintained for 1.Establish and maintain 1 permit Year 1 1.Yes/No
citizens to ask stormwater questions hotline phone number
and report stormwater issues.The 2.Identify and train a
hotline number will be advertised on responsible party to 2 Permit Year 1 2.Date of training and
g, the stormwater webpage.The hotline answer the hotline and number of staff trained
will be maintained by a member of direct calls
staff who will be trained in general
stormwater knowledge,,appropriate 3.Track the number and
contacts for stormwater questions, type of calls received and 3. Annually—Permit 3.Number and type of
document resolutions of Years I —5 calls
and citizen opportunities within the
stormwater ro ram calls
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 16

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 3.3.1: Public Input
Ref. Mechanisms for public involvement that provide for input on stormwater issues and the stormwater program.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Storinwater Webpages on City Website
Maintain the stormwater Webpages 1.Maintain,review,and 1.Annually—Permit 1.Date of review and
on the City website to provide update the stormwater Years 1-5 date updated(if required)
information regarding the stormwater webpages,check for
program,MS4 permit requirements, broken links,and upload
g. SWMP,applicable ordinances and new materials as needed
design standards,hot line phone
number,links to state Erosion
Control information,and links to
PTRC information
Stormwater Hotline
A hotline will be maintained for 1.Establish and maintain 1. Permit Year 1 1.Yes/No
citizens to ask stormwater questions hotline phone number
and report stormwater issues.The
hotline number will be advertised on
the stormwater webpage.The hotline Identify and pain a 2. Permit Year 1 2.Date of training and
10. will be maintained by a member of responsible party to number of staff trained
staff who will be trained in general answer the hotline and
stormwater knowledge,appropriate direct calls
contacts for stormwater questions, 3.Track the number and 3. Annually—Permit 3.Number and type of
and citizen opportunities within the type of calls received and Years 1—5 calls
stormwater program document resolutions of
calls
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 17

Table 14:Public Involvement and Participation BMPs
Permit 3.3.2:Volunteer Opportunities
Ref. Measures to provide volunteer opportunities designed to promote ongoing citizen participation.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Partnership with PTRC
Continue to engage with PTRC for 1.Establish legal
education and outreach initiatives that agreement with PTRC l Permit Year 1 1.Yes/No
will be administered by PTRC under that meets permit
a legal agreement.PTRC currently requirements
provides television commercials and 2.Monitor PTRC 2.Annually—Permit 2. Yes/No
radio advertising,newspaper and activities to ensure Years 1-5
11. print ads,brochures and flyers, partnership commitments
curriculum guides for schools,movie are met
theater ads,and promotional items
with a logo.Initiatives will focus on
residential,commercial,and school
audiences.Target pollutants will
include those listed in Tables 7 and
12
City-Sponsored Volunteer Opportunities
The City will provide one City- 1.Develop or identify 1.Annually—Permit 1.Yes/No
sponsored volunteer opportunity(in one volunteer activity Years 1—5
person or virtually)such as that addresses a target
litter/stream cleanups,volunteer pollutant or pollutants
12 monitoring,outfall signage with
reporting to the City,or Earth Day 2.Coordinate and host 2.Annually—Permit 2.Date and number of
activities at least once a year. the activity Years 1—5 participants
Residential,commercial,and school
audiences will be targeted
NCS000502 Final S)AIMP
City of Trinity
October 30,2023
Page 18

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
3.4.1:MS4 Map
Permit Ref. 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 A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Updates to MS4 Map
Continue to update the MS4 map 1.Continue mapping of 1.Permit Years 1-5 1.Percent of Trinity
with information including system to identify all mapped and number of
stormwater conveyances(City-owned outfalls,conveyances, outfalls identified
swales,ditches,and pipes),outfalls, and flow directions
flow direction,and receiving waters. 2.Add receiving waters 2.Permit Year 1 2.Yes/No
Update the map annually with newly to the map
13. identified or constructed stormwater 3.Develop process for 3.Permit Year 1 and 2 3.Yes/No
infrastructure collecting as-built data
and incorporating into
the existing ma
4.When new 4.Continually 4.Total number of
conveyances/outfalls are outfalls
located or constricted
add them to the ma
3.4.2:Regulatory Mechanism
Permit Measures to provide an IDDE ordinance or other regulatory mechanism that provides legal authority to
Ref. prohibit,detect,and eliminate illicit connections and discharges,illegal dumping and spills into the MS4,
including enforcement procedures and actions.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Maintain Legal Authority
The City's stormwater ordinance 1.Maintain and review 1.Annually 1.Date of review
("Universal Stormwater Management IDDE ordinance,and
Program Ordinance"for the City of update as needed
Trinity,NC Article 1:Sec-102)
14. provides legal authority to prohibit,
detect,and eliminate illicit
connections and discharges,illegal
dumping,and spills into the MS4,
including enforcement procedures
and actions
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 19

Table 15:Illicit Discharge Detection and Elimination BMPs
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:
Permit a) Locate priority areas likely to have illicit discharges,
Ref. 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 A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Maintain IDDE Plan
Continue to implement the existing 1.Review the written 1.Annually—Permit 1.Date of review
written IDDE Plan.Perform an IDDE Plan and update as Years 1—5
annual evaluation of IDDE Plan needed
implementation and effectiveness.
Review documentation to identify
chronic violators/"hot spots" 2.Review and update 2.Annually—Permit 2.Number of chronic
I5. IDDE reports and Years 1—5 violators;Number of hot
inspections to identify spots identified
chronic violators,issues,
and/or"hot spot"areas
according to the criteria
identified in the IDDE
Plan.
Illicit Discharge Inspections
Perform regular dry weather(no 1.Train Public Works on 1.Permit Year 1 1.Training date and
precipitation in previous 72 hours) how to perform dry number of attendees
outfall inspections to proactively weather outfall
identify illicit discharges and illicit inspections and illicit
connections. Conduct illicit discharge investigations
16. discharge detection inspections in 2.Perform inspections of 2.Annually—Permit 2.Percentage of outfalls
response to complaints, 20%of mapped outfalls Years I —5 inspected
as described in the IDDE
Plan
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 20

Table IS:Illicit Discharge Detection and Elimination BMPs
3.4.4:IDDE Tracking
Permit Measures for tracking and documenting the date(s)an illicit discharge,illicit connection or illegal dumping was
Ref. 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 A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Tracking Spreadsheet
A tracking system for observed IDDE 1.Develop a method to 1.Permit Year 1 and 2 1.Yes1No
violations and follow-on actions will track illicit discharges
be developed and implemented.The that works for staff
number of potential illicit discharges availability.
17. found,number of illicit discharges
verified,number of illicit discharges
resolved/removed,number of 1.Track illicit discharges 1.Continuously—Permit 1.Number of illicit
enforcement actions taken,and Years I —5 discharges identified,
number of clu•onic violators/"hot verified,resolved
spots"identified will be tracked
3.4.5: Staff IDDE Training
Measures to provide training for municipal staff and contractors who,as part of their normal job
Pef. responsibilities,may observe an illicit discharge,illicit connection illegal durn in or ills.Training shall
Ref. P � Y g > g P g p g
include how to identify and report illicit discharges,illicit connections,illegal dumping and spills.Each staff
training event shall be documented,including the agenda/ma rials,date,and number of staff participating.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Staff Training
Provide training to educate City staff 1.Identify or develop 1. Permit Year 1 1.Yes/No
and contractors who may observe an IDDE training for City
illicit discharge or connection,illegal staff or contractors
dumping or spills. Training will
include indicators of potential illicit
discharges/connections and illegal
18. dumping and the appropriate avenues 2.Train staff with 2.Annually—Permit 2.Training date and
through which to report suspected potential to discover an Years 1 —5 number of attendees
illicit discharge(e.g.reporting illicit discharge during
violations of construction site runoff routine work activities
to NCDEQ)
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 21

Table 15:Illicit Discharge Detection and Elimination BMPs
3.4.6:IDDE Reporting
Permit Measures for the public and staff to report illicit discharges,illegal dumping and spills.The mechanism shall be
Ref. publicized to facilitate reporting and shall be managed to provide rapid response by appropriately trained
personnel.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Stormwater Webpages on City Website
Maintain the stormwater Webpages 1.Maintain,review,and 1.Annually—Permit 1.Date of review and
on the City website to provide update the stormwater Years 1-5 date updated(if required)
information regarding the stormwater webpages,check for
lg, program,MS=4 permit requirements, broken links,and upload
SWMP,applicable ordinances and new materials as needed
design standards,hot line phone
number,links to state Erosion
Control information,and links to
PTRC information
Stormwater Hotline
A hotline will be maintained for 1.Establish and maintain 1. Permit Year 1 1.Yes/No
citizens to ask stormwater questions hotline phone number
and report stornwater issues.The
hotline number will be advertised on 2.Identify and train a 2. Permit Year 1 2.Date of training and
20. the stormwater webpage.The hotline responsible party to number of staff trained
will be maintained by a member of answer the hotline and
staff who will be trained in general direct calls
stormwater knowledge,appropriate 3.Track the number and 3. Annually—Permit 3.Number and type of
contacts for stormmvater questions, type of calls received and Years 1—5 calls
and citizen opportunities within the document resolutions of
stormwater program calls
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 22

PART 8: CONSTRUCTION SITE RUNOFF CONTROL PROGRAM
In accordance with 15A NCAC 021-1.0153,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 State or Local Program Name Legal Authority Implementing Entity
Reference
3.5.1 -3.5.4 State Implemented SPCA Program 15A NCAC Chapter 04 NCDEQ
The City of Trinity also implements the following BMPs to meet NPDES MS4 Permit requirements.
Table 17: Construction Site Runoff Control BMPs
3.5.6:Public Input
Permit Ref. Measures to provide and promote a means for the public to notify the appropriate authorities of observed
erosion and sedimentation problems.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Stormwater Hotline
A hotline will be maintained for 1.Establish and maintain 1. Permit Year 1 1.Yes/No
citizens to ask stormwater questions hotline phone number
and report stormwater issues.The
hotline number will be advertised on
the stormwater webpage.The hotline
will be maintained by a member of 2.Identify and train a 2. Permit Year] 2.Date of training and
staff who will be trained in general responsible party to number of staff trained
21. stormwater knowledge,appropriate answer the hotline and
contacts for stormwater questions, direct calls
and citizen opportunities within the 3.Track the mmnber and 3. Annually—Permit 3.Number and type of
stormwater program type of calls received and Years I —5 calls
document resolutions of
calls
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 23

Table 17: Construction Site Runoff Control BMPs
3.5.5: Waste Management
Permit Measures to require construction site operators to control waste such as discarded building materials,concrete
Ref. truck washout,chemicals,litter,and sanitary waste at the construction site that may cause adverse impact to
water quality.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
22. Construction site waste management control is through the State SPCA Program through 15A NCAC Chapter 04
Municipal Staff Training
Train Public Works and other 1.Train staff to know if 1.Permit Year 1 1.Yes/No
municipal staff who receive calls construction site
23. from the public on the protocols for complaints need to be
referral and tracking of construction investigated for 1DDE
site runoff control complaints that 2.Document the number 2.Annually—Permit 2.Number of complaints
warrant an illicit discharge of complaints Years I—5 investigated
investigation. investi ated
PART 9: POST-CONSTRUCTION SITE RUNOFF CONTROL PROGRAM
This SWMP identifies the minimum elements to develop, implement and enforce a program to address
stortmwater 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 Programs)for Post-Construction Site Runoff Control Program
State QAP Name State Requirements Local Ordinance/Regulatory Mechanism
Reference
Water Supply Watershed 15A NCAC 2B "The Universal Stormwater Management
(WS-III) .0620-.0624 Program Ordinance"for the City of Trinity,NC
Article 3: Sec-308
Universal Stormwater "The Universal Stormwater Management
Management Program 15A NCAC 2H.1020 program Ordinance"for the City of Trinity,NC
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 24

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. USWMPO = Universal
Stonnwater Management Program Ordinance for the City of Trinity,NC
Table 19: Summary of Existing Post-Construction Program Elements
Permit Requirements for Municipal Ordinance/Code Reference(s) Date Adopted
Plan Review and Approval and/or Document Title(s)
3.6.2(a)Authority USWMPO Article 1: Sec-102 09/02/2011
3.6.3(a)& 15A NCAC 02H.0153(c) USWMPO Article 2: Sec-204 09/02/2011
Federal, State&Local Projects
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 USWMPO Article 4: Sec-405(A) 09/02/2011
Restrictions/Covenants
3.6.3(f)Access Easements USWMPO Article 4: Sec 408 09/02/2011
Permit Requirements for Municipal Ordinance/Code Reference(s) Date Adopted
Inspections and Enforcement and/or Document Title(s)
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: 09/02/2011
Sec-501
3.6.4(c)Annual SCM Inspections USWMPO Article 4: Sec-403 09/02/2011
3.6.4(d)Low Density Inspections See BMP 26 Permit Year 2
3.6.4(e)Qualified Professional USWMPO Article 3: Sec-305 09/02/2011
Permit Requirements for Municipal Ordinance/Code Reference(s) Date Adopted
Fecal Coliform Reduction and/or Document Title(s)
3.6,6(a)Pet Waste USWMPO Article 3: Sec-308(1)(b) 09/02/2011
City of Trinity Subdivision Ordinance 08/14/2017
Article VII: Section 7-4(E)
3.6.6(b)On-Site Domestic City of Trinity Flood Damage Prevention
Wastewater Treatment Ordinance Article 5: Section A(10) 01/02/2008
NCGS 130A-335(e) 07/01/1982
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 25

The annual reporting metrics for the post construction program are provided in Table 20:Post Construction
Site Runoff Control BMPs below.
Table 20:Post Construction Site Runoff Control BMPs
3.6.5(a),3.6.5(b),and 4.1.3: Minimum Post-Construction Reporting Requirements
Ref.
Permit Measures to document activities over the course of the fiscal year(July I —June 30) including appropriate
information to accurately describe progress,status,and results.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Standard Reporting
Implement standardized tracking, 1.Track number of low 1.Continuously 1.Number of plan
documentation,inspections and density and high density Permit Years 1-5 reviews performed for
reporting mechanisms to compile plan reviews performed. low density and high
appropriate data for the annual self- density.
assessment process. Data shall be 2.Track number of low 2.Continuously 2.Number of plan
provided for each Post-Construction/ density and high density Permit Years 1-5 approvals issued for low
Qualifying Alternative Program plans approved. density and high density.
being implemented as listed in Tables
13 and 19. 3.Maintain a current 3.Continuously 3.Summary of number
inventory of low density Permit Years 1-5 and type of SCMs added
projects and constructed to the inventory;and
SCMs including SCM number and acreage of
24. type or low density low density projects
acreage,location and last constructed.
inspection date.
4.Track number of SCM 4.Continuously 4.Number of SCM
inspections performed. Permit Years 1-5 inspections.
5.Track number of low 5.Continuously 5.Number of low density
density inspections Permit Years 1-5 projects inspected.
performed.
6.Track number and 6.Continuously 6.Number of
type of enforcement Permit Years 1-5 enforcement actions
actions taken. issued.
2.3 and 3.6: Qualifying Alternative Program(s)
Permit Ref. Measures to develop,implement and enforce additional BMPs in order to comply with the QAP state program
requirements.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
The QAP requirements are fully met by the existing QAP for post-construction,see references provided in Table 18.
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 26

Table 20: Post Construction Site Runoff Control BMPs
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
Permit plans, inspection reports,monitoring results and other information deemed necessary to evaluate compliance
Ref. p ` � p p � y p g '
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 A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
This permit requirement is fully met by the existing post-construction program,see references provided in Table 19.
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
Permit Ref. 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 A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation_ Metric
This permit requirement is fully met by the existing post-construction program,see references provided in Table 19.
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 27

Table 20:Post Construction Site Runoff Control BMPs
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.
Permit Alternatively,the project owner may provide a surety bond to guarantee compliance with the approved plan(s),
Ref. (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.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Revisions to Code of Ordinances
Revise existing ordinance to 1.Revise code to require 1.Permit Year I and 2 1.Report date adopted
specifically require inspection of low- 20%inspection of low- and code reference
density projects and continue to density projects at least
require annual SCM inspections once during the permit
25. term by a qualified
professional
2.Conduct inspection of 2.Permit Years 2-5 2.Number of low-
20%low-density projects density inspections
annually and document performed
any follow-u
3.6.6:Fecal Coliform Reduction
Measures to control,to the maximum extent practicable,sources of fecal coliforni per 15A NCAC 02H
Permit •1017(7).At a minimum,the program shall include: (a)A pet waste management component,which may be
Ref. 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 A B C D
No. Schedule for Annual Reporting
Description of BMP Measurable Goal(s) Implementation Metric
This permit requirement is fully met by the existing post-construction program,see references provided in Table 19.
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 28

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 though 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 nnmicipal
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
3.7.1:Municipal Facilities Operation and Maintenance Program
Permit Measures to manage facilities that are owned and operated by the permittee and have the potential for generating polluted
Ref. stormwater runoff.The permittee shall maintain a current inventory of municipal facilities;perform facility inspections
and routine maintenance;establish specific fi-equencies,schedules,and standard documentation;provide staff training on
general stormwater awareness and im ementing pollution prevention and good Irousekee ing ractices.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Pollution Prevention and Good Housekeeping(PPGH)Plan Document
Maintain and implement the PPGH 1.Review the written 1.Annually—Permit 1.Yes/No
Plan that includes measures for PPGH Plan as part of the Years I —5
facilities operations and maintenance evaluation of the
(O&M),spill response,MS4 O&M, effectiveness of the
26. municipal SCM O&M,staff training, program
vehicle maintenance,and pavement
management.Perform inspections for 2.Create municipal 2.Permit Year 1 2.Yes/No
each good housekeeping requirement facility inventory
according to the schedule in the including stormwater
PPGH Plan pollution potential
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 29

Table 21: Pollution Prevention and Good Housekeeping BMPs
3.Perform municipal 3.Annually—Permit 3.Yes/No/Partial;
facility inspections in Years 1-5 Number of inspections
accordance with the performed
PPGH Plan schedule
Staff Training
Develop or identify a staff training 1.Identify or develop 1. Permit Year 1 1. Yes/No
program for general stornnvater staff training program for
pollution prevention/spill municipal employees
response/fertilizer training/pavement
27. management and overview of the 2.Train staff with PPGH 2.Annually—Permit 2.Date of training and
PPGH plans and provide to responsibilities,street Years 1—5 number of staff trained
appropriate utilities and public works sweeping responsibilities,
employees and staff that work on
municipal equipment
3.7.2:Spill Response Program
Permit Measures for facilities and operations that store and/or use materials that have the potential to contaminate stormwater
Ref. runoff if spilled.The permittee shall maintain written spill response procedures and train staff on spill response
procedures.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Spill Response Procedures
Evaluate and maintain spill response 1.Review the written 1.Annually—Permit 1.Yes/No
procedures as part of the PPGH Plan PPGH Plan,including Years 1 —5
and train appropriate staff.Post the spill response
procedures developed in the plan on procedures,as part of the
spill kits at City facilities evaluation of the
effectiveness of the
28.
program
2.Train staff with PPGH 2.Annually—Permit 2.Date of training and
responsibilities,street Years 1—5 number of staff trained
sweeping responsibilities,
and staff that work on
municipal equipment
3.7.3:MS4 Operation and Maintenance Program
Permit Measures to minimize pollutants in the stormwater collection system.The permittee shall provide operation and
Ref. maintenance staff training on stornnvater awareness and pollution prevention,perform MS4 inspections,maintain the
collection system including catch basins and conveyances;and establish specific fi-equencies,schedules,and standard
documentation.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
lnr lementation Metric
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 30

Table 21:Pollution Prevention and Good Housekeeping BMPs
MS4 O&M Plan
Maintain a written O&M Plan that 1.Review the written 1.Annually—Permit 1. Yes/No
includes routine inspections and MS4 O&M Plan as part Years 1 —5
maintenance of the collection system of the evaluation of the
and establishes frequencies, effectiveness of the
schedules,documentation,and program
29. training for municipal staff. 2.Perform inspections in 1.Annually—Permit 1.Yes/No
accordance with schedules Years 1 —5
in the MS4 O&M Plan
3.Train staff with PPGH 2.Annually—Permit 2.Date of training and
responsibilities,street Years 1—5 number of staff trained
sweeping responsibilities,
and staff that work on
municipal e ui ment
3.7.4:Municipal SCM Operation and Maintenance Program
Permit Measures to manage municipally-owned,operated,and/or maintained structural stormwater control measures(SCMs)that
Ref. 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 A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Municipal SCM O&M Plan
Maintain a municipal SCM O&M 1.Review the written 1.Annually—Permit 1.Yes/No
Plan as part of the PPGH Plan and Municipal SCM O&M Years 1 —5
train appropriate staff Plan as part of the
evaluation of the
30. effectiveness of the
program
2.Perform inspections in 2.Annually,once there 2.Yes/No/NA
accordance with schedules are Municipal SCMs to
in the Municipal SCM inspect
O&M Plan
3.7.5:Pesticide,Herbicide and Fertilizer Management Program
Permit Measures to minimize water quality impacts from the use of landscape chemicals.The permittee shall provide routine
Ref. pollution prevention and chemical use,storage and handling training,and shall ensure compliance with permits and
applicator certifications.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
Staff'rraining
Develop or identify a staff training 1.Require staff or 1. Continuously 1.Number of staff
31. program for pesticide/fertilizer contractors to maintain certified
training.This could be part of PPGH NC Department of
plan training(see BMP 27).Require Agriculture Pesticide
staff and contractors that apply Applicator certification.
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 31

Table 21:Pollution Prevention and Good Housekeeping BMPs
chemicals on municipal property to 2.identify or develop 2. Permit Year 1 2.Yes/No
maintain applicator licenses staff training for PPGH
regarding pesticides,
herbicides,and fertilizer
3.Train staff on PPGH 3.Annually—Permit 3.Date of training and
regarding pesticides, Years 1-5 number of staff trained
herbicides,and fertilizer
Permit 3.7.6:Vehicle and Equipment Maintenance Program
Ref. 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 A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Implementation Metric
NPDES Industrial Permit Compliance
Review municipal facilities inventory ].Determine if any 1. Annually—Permit 1.Yes/No
32. for sites that perform vehicle and municipal facilities Years 1 —5
equipment maintenance to determine require an industrial
if NPDES industrial permits are NPDES permit
required
Vehicle and Equipment Maintenance and Cleaning Plan
1.Maintain the written 1.Annually—Permit 1.Yes/No
PPGH Plan,including Years 1-5
vehicle and equipment
maintenance procedures,
as part of the evaluation
Maintain a Vehicle and Equipment of the effectiveness of
33. Maintenance and Cleaning Plan as the program
part of the PPGH Plan and train 2.Train staff with PPGH 2.Annually—Permit 2.Date of training and
appropriate staff responsibilities,street Years 1-5 number of staff trained
sweeping responsibilities,
and staff that work on or
clean municipal
equipment
Permit 3.7.7,Pavement Management Program
Ref. Measures to reduce pollutants in stormwater runoff from municipally-owned streets,roads,and parking lots within the
permittee's corporate limits.The pennittee shalt implement measures to control litter,leaves,debris,particulate and fluid
pollutants associated with vehicles,and establish specific frequencies,schedules,and documentation.
BMP A B C D
No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting
Im lennentation Metric
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 32

Table 21:Pollution Prevention and Good Housekeeping BMPs
Pavement Management Plan
1.Review the written 1.Annually—Permit 1. Yes/No
PPGH Plan,including Years 1-5
pavement management
procedures,as part of the
evaluation of the
effectiveness of the
Maintain a Municipal Pavement program
Management Plan as part of the 2.Assess whether street 2.Annually 2.Result of assessment
34. PPGH Plan and train appropriate sweeping or alternative
staff.Include measures to reduce pavement management
pollutants and leaf litter from City program is warranted
owned and maintained streets from 3.Assess whether leaf 3.Permit Year 1 3.Result of assessment
entering the MS4 network collection is warranted
4.Provide public 4.Permit Year 1 4.Yes/No
education about stopping
vehicle leaks on
stormwater webpages or
in conjunction with
PTRC activities
NCS000502 Final SWMP
City of Trinity
October 30,2023
Page 33