NCS000540_Mooresville Draft SWMP_20210820

Town of Mooresville
Stormwater Management Plan
Permit Number: NCSo00540
2017 Version
(2021 Updated Information)

Table of Contents
Introduction.................................................................................................................................... 5
MS4Information............................................................................................................................ 6
JurisdictionalArea.................................................................................................................. 6
Stormwater Conveyance System............................................................................................. 6
ReceivingStreams....................................................................................................................7
TMDLs......................................................................................................................................7
Impaired streams, likely sources, and existing programs that address the impairment .........
7
Existing Water Quality Programs............................................................................................
8
Partnerships and/or inter -local agreements...........................................................................
8
Stateprograms........................................................................................................................
8
Pointsof Contact.....................................................................................................................
9
Section 1: Public Education and Outreach Program.....................................................................10
1.1 Goals and Objectives.............................................................................................................10
1.2 Target Pollutants and/or Stressors......................................................................................10
1.3 Target Audiences..................................................................................................................10
1.4 Residential and Industrial/Commercial Issues....................................................................
11
1.5 Informational Website..........................................................................................................
11
1.6 Distribution of Public Education Materials..........................................................................12
1.7 Hotline/Helpline...................................................................................................................12
1.8 Public Education and Outreach Program.............................................................................12
Section 2: Public Involvement and Participation Program...........................................................14
2.1 Public Review and Comment on Stormwater Plan..............................................................14
2.2 Target Pollutants and/or Stressors......................................................................................14
2.3 Target Audiences..................................................................................................................14
2.4 Residential and Commercial Issues.....................................................................................14
Section 3: Illicit Discharge Detection and Elimination Program..................................................16
3.1 Illicit Discharge Detection and Elimination Program..........................................................16
3.2 Legal Authorities..................................................................................................................16
3.3 Storm Sewer System Map of Major Outfalls........................................................................16
3.4 Dry Weather Flow Detection Program.................................................................................16
3.5 Investigate Sources of Identified Illicit Discharges..............................................................16
3.6 Track and Document Investigations of Illicit Discharges....................................................16
2

3.7 Employee Training...............................................................................................................17
3.8 Public Education..................................................................................................................17
3.9 Public Reporting...................................................................................................................17
3.10 Enforcement of the IDDE Ordinance.................................................................................17
Section 4: Construction Site Runoff Controls Program............................................................... 20
Section 5: Post Construction Site Runoff Controls Program........................................................ 20
5.1 Legal Authorities.................................................................................................................. 20
5.2 Strategies which include SCMs appropriate for the MS4....................................................21
5.3 Plan Reviews.........................................................................................................................21
5.4 Inventory of Projects with Post -Construction Structural Stormwater Control Measures ... 21
5.5 Deed Restrictions and Protective Covenants....................................................................... 21
5.6 Mechanism to require long-term operation and maintenance of Stormwater Control
Measures(SCMs).......................................................................................................................21
5.7 Inspections.......................................................................................................................... 22
5.8 Educational materials and training for developers............................................................. 22
5.9 Enforcement........................................................................................................................ 22
Section 6: Good Housekeeping and Pollution Prevention for Municipal Operations .................. 26
6.1 Inventory of municipally owned or operated facilities........................................................ 26
6.2 Operation and Maintenance (O&M) for municipally owned or operated facilities............ 26
6.3 Spill Response Procedures.................................................................................................. 26
6.4 Streets, roads, and public parking lots maintenance.......................................................... 26
6.5 Operation and Maintenance (O&M) for municipally -owned or maintained catch basins
and conveyance systems........................................................................................................... 27
6.6 Identify municipally owned or maintained structural stormwater controls ...................... 27
6.7 O&M for municipally -owned or maintained structural stormwater controls .................... 27
6.8 Pesticide, Herbicide and Fertilizer Application Management ............................................ 27
6.9 Staff Training...................................................................................................................... 27
6.10 Prevent or Minimize Contamination of Stormwater Runoff from all areas used for Vehicle
andEquipment Cleaning.......................................................................................................... 28
3

Table of Tables
Table is Town of Mooresville Approximate Land Use Composition .............................................. 6
Table 2: Summary of Current MS4 Mapping.................................................................................. 7
Table 3: Town of Mooresville Receiving Waters............................................................................. 7
Table 4: Target Pollutants for the Public Education and Outreach Program ............................... io
Table 5: Pollutants associated with residential and industrial/commercial issues ...................... ii
Table 6: Public Education and Outreach BMP Table.................................................................... 13
Table 7: Public Involvement and Participation BMP Table.......................................................... 15
Table 8: Illicit Discharge Detection and Elimination Program BMP Table.................................18
Table 9: Post Construction Site Runoff Controls Program BMP Table ........................................ 23
Table io: Good Housekeeping and Pollution Prevention Program BMP Table ........................... 29
4

Introduction
The Town of Mooresville began operating under a National Pollutant Discharge Elimination
System (NPDES) Phase II Municipal Separate Storm Sewer System (MS4) Permit on December
1, 2011. The permit has a 5-year cycle. The current permit is effective from February 20, 2017 to
February 19, 2022.
The purpose of this Stormwater Management Plan (SWMP) is to establish and define the means
by which the Town of Mooresville 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 Stormwater Plan includes a description of the individual Best Management Practices
(BMPs) within each program that will be used to fulfill the permit requirements. The Plan will
also indicate the frequency of the BMP, measurable goals for each BMP, the implementation
schedule, funding and the responsible person or position for implementation.
The Town's Stormwater Management Plan incorporates the following minimum measures as
described by the NPDES Phase II Permit:
1. Public Education and Outreach — The objective of this minimum measure is to distribute
educational material and information to the public that describes the impacts of
stormwater discharges on water bodies and how members of the community can reduce
the pollutants in stormwater runoff.
2. Public Involvement and Participation — The objective of this minimum measure is to
comply with State and local public notice requirements when implementing a public
involvement and participation program.
3. Illicit Discharge Detection and Elimination — This program protects water quality by
investigating reports of illicit discharges and illicit connections.
4. Construction Site Runoff Controls — This program is operated by Iredell County Erosion
and Sediment Control.
5. Post Construction Site Runoff Controls — This program reduces the impacts of
stormwater runoff from new development and redevelopment by requiring the
construction and maintenance of post construction stormwater controls.
6. Pollution Prevention and Good Housekeeping_ for Municipal Operations — This program
reduces pollution in stormwater runoff from municipal facilities and operations.
5

MS4 Information
Based on the US Census Bureau data, the population estimate for the Town of Mooresville in
July 2019 was 39,132. In April 2010, the population estimates base for the Town of Mooresville
was 34,367. The US Census Bureau data indicates an 13.9% growth in population between April
2oio and July 2019.
Jurisdictional Area
The Town of Mooresville MS4 jurisdictional area is approximately 24 square miles. The Town of
Mooresville is located in southern Iredell County in the Piedmont region of North Carolina. The
Town of Mooresville is within the Catawba and Yadkin/Pee-Dee River Basins and the municipal
limits extend into the WS-IV Critical and Protected areas as well as the WS-II Critical Area.
According to the Drainage Master Plan completed by ESP in January 2016, the land use
composition within the Town of Mooresville is as detailed in the table below:
Table 1: Town of Mooresville Approximate Land Use Composition
Land Use Category
% Total Area
Commercial
i %
Industrial
%
Institutional
6%
Multi -Family
%
Single -Family — High
i %
Single -Family — Low
%
Single -Family — Medium
8%
Utili
2%
Woods/Undeveloped
6%
Stormwater Conveyance System
The existing MS4 serving the Town of Mooresville is comprised of a network of open ditches,
swales, pipes, culverts and structural SCMs that are within the incorporated limits. The
stormwater maintenance crew maintains all stormwater drainage infrastructure within the
rights -of -way of Town owned and maintained roads and within easements dedicated to the
Town. Maintenance of the Town's MS4 conveyance system is currently funded using the
stormwater utility fee established in January 2015. The annual revenue of the stormwater utility
fee for fiscal year 2020 was approximately $1,8o9,9o9 and is used for permit compliance,
maintenance of the Town's MS4 and capital improvements to the Town's MS4.
2

Table 2: Summary of Current MS4 Mapping
Percent of MS4 Area
90
Mapped
No. of Major Outfalls*
210
total
Mapped
Receiving Streams
The Town of Mooresville MS4 conveyance system discharges to the following streams within the
Yadkin/Pee-Dee River Basin: Back Creek, Dye Branch, Rocky River, South Fork Withrow Creek
and West Branch Rocky River. It also discharges to the following streams within the Catawba
River Basin: Byers Creek, Davidson Creek, McCrary Creek, Reeds Creek and Work Creek. 3
below shows the Town of Mooresville receiving waters.
Table 3: Town of Mooresville Receiving Waters
River Basin
Receiving Stream Name
Stream
Segment
Water Quality
Classification
TMDL
(Yes No)
Byers Creek
11-8 -(1)
WS-IV
No
Catawba
Byers Creek
11-8 -(2)
WS-IV; CA
No
Davidson Creek
11-1o6
WS-IV; CA
No
McCrary Creek
11- 1.
WS-IV,B; CA
No
Reeds Creek
11-10 -(1)
WS-IV,B
No
Reeds Creek
11-10 -(2)
WS-IV,B; CA
No
Work Creek
11-10
WS-IV,B; CA
No
Back Creek
12-io8-21-1- o.
WS-II;H W
No
Yadkin Pee-
Dee
e Branch
1 - -2
C
No
Rocky River
13-17
C
Yes
South Fork Withrow
Creek
12-1o8-21-3-2
C
No
West Branch Rocky
River
1 -
C
No
TMDLs
No approved TMDL with an approved Waste Load Allocation (WLAs) assigned to stormwater at
this time.
Impaired streams, likely sources, and existing programs that address the
impairment
Dye Creek (Branch) is categorized as Impaired (Category 5) due to Benthos Poor (Nar, AL, FW)
and was listed on the 303(d) list as of 1998.
7

Rocky River is categorized as Impaired due to ecological/biological integrity benthos, fecal
coliform, mercury in fish tissue, and turbidity. TMDL for mercury has been developed but is not
applicable to stormwater permittees at this time. TMDL for fecal coliform was approved in
September 2002 but does not include an approved WLA for stormwater. Rocky River is listed
on the 303(d) list for a turbidity impairment as of 1998 (IRCategory 3a1) and a Benthos Fair
impairment as of 1998 (IR Category 5).
The Town of Mooresville takes measures to address the TMDL for fecal coliform in Rocky River.
The Rocky River Wastewater Treatment operates under a NCGii0000 permit and has an
updated Stormwater Pollution Prevention Plan for the facility. The SWPPP outlines the layout of
the facility, outfall monitoring information and the best management practices used to limit
exposure. Pet waste was added to the list of Target Pollutants in hopes to mitigate Fecal
Coliform in Rocky River and educational materials are to be distributed to appropriate
audiences.
Existing Water Quality Programs
Requirements of Watershed Protection Overlay Districts are detailed in the Town of Mooresville
Zoning Ordinance, established in accordance with the requirements in North Carolina General
Statutes Section 143-214.5. These standards are designed to regulate density and impervious
surface cover in water supply watershed areas in order to promote public health, safety, and
general welfare through control of non -point source pollution within watershed protection
areas.
Partnerships and/or inter -local agreements
Town of Mooresville is a part of the Regional Stormwater Partnership which maintains a website
including general stormwater information. The Regional Stormwater Partnership develops TV
and radio advertisements to educate the public about illicit discharges and stormwater pollution
and holds different workshops and "Tech Talks" throughout the year to provide education on
stormwater related topics.
The Town of Mooresville relies upon the Iredell County Erosion Control Section to comply with
requirements of the Construction Site Runoff Control Program. The Town of Mooresville and
Iredell County entered into an Interlocal Agreement for Enforcement Services of Iredell County
Soil Erosion and Sediment Control Ordinance on September 15, 2009.
State programs
The Town of Mooresville relies on the NCDEQ Division of Energy, Mineral and Land Resources
Sediment and Erosion Control Program to comply with requirements of the Construction Site
Runoff Control Program.
NO

Points of Contact
Marissa Meltzer
Jonathan Young
Randall Hemann
Stormwater Program Specialist
Engineering Services Director
Town Manager
2523 Charlotte Highway
2523 Charlotte Highway
413 N. Main Street
Mooresville, NC 28117
Mooresville, NC 28117
Mooresville, NC 28115
704-799-4195
704-799-4065
704-662-3188
mmeltzer(o)mooresvillenc.gov
iyoung0mooresvillenc_gov
rhemannOmooresvillenc.gov
Figure 1: Organizational Chart

Section 1: Public Education and Outreach Program
The Town of Mooresville's Public Education and Outreach Program educates residents, business
owners and other people within the community about the impacts of stormwater on the Town's
receiving waters, and what members of the community can do to reduce pollutants in
stormwater runoff. The Stormwater Program Specialist is responsible for implementation and
the program is funded through the Stormwater Utility Fee. Some requirements of the Public
Education and Outreach program are fulfilled through the Town's membership with the
Regional Stormwater Partnership of the Carolinas (RSPC), which is further discussed at the end
of this section.
The following sections discuss the BMPs implemented to fulfill these requirements. See Table
for the measurable goals, frequency and implementation schedule for each BMP.
1.1 Goals and Objectives
The goals and objective of the Town of Mooresville's Public Education and Outreach Program is
to educate the community about the impacts of stormwater discharges on water bodies and the
steps the public can take to reduce pollutants in stormwater runoff through the distribution of
educational materials and/or outreach activities.
1.2 Target Pollutants and/or Stressors
Table 4 below describes the pollutants and pollutant sources targeted for the public education
and outreach program for the current permit cycle. Educational information provided will
include the impacts of stormwater pollution on water bodies and the steps the public can take to
reduce pollutants in stormwater runoff. Target pollutants are chosen based on citizen
complaints and requests for service, and information provided by Town staff.
Table 4: Target Pollutants for the Public Education and Outreach Program
Target Pollutant
Pollution Source
Grass Clippings, leaves
and yard waste
Residential areas, landscaped areas
Automotive Fluids
Residential areas
Pet Waste
Residential areas, public open areas
Trash
Garbage and litter
Illegal Dumping
Dum sters
Stormwater education and pollution prevention information for the targeted pollutants are to be
done through the distribution of flyers at town events, the distribution of door hangers after
volunteer storm drain marking events, and articles published in the Town Voice newsletter
included with the utility bill. See Section 1.6 for additional information regarding the
distribution of educational information addressing target pollutants and/or stressors.
1.3 Target Audiences
Homeowners and business owners are the target audiences for the public education and
outreach program. Homeowners were chosen as a target audience for the Public Education and
10

Outreach program because they are most likely to engage in activities that produce or involve
the target pollutants listed in Table . The Town of Mooresville has a wide variety of businesses
which have the potential to contribute to stormwater pollution. A selection of businesses and
facilities which conduct activities that produce the target pollutants will receive targeted
education providing information regarding stormwater pollution prevention specific to their
business.
1.4 Residential and Industrial/Commercial Issues
The following residential and industrial/commercial stormwater issues will be addressed in the
Town's Public Education and Outreach Program.
Table 5: Pollutants associated with residential and industrial/commercial issues
Issue
Pollutant
Impacts
Lawn and garden
Nutrients (Grass
Excess nutrients discharged from the
care activities
clippings, leaves, yard
Town's MS4 and into receiving waters
waste)
increase algae growth which negatively
impacts aquatic plants and wildlife.
Automotive
Automotive Fluids
Negative environmental impacts on the
Maintenance
Town's receiving waters.
Pet Waste
Pet Waste
Excess nutrients and bacteria discharged
from the Town's MS4 can negatively impact
the Town's receiving waters.
Littering in
Trash
Increase in bacteria in stormwater runoff
neighborhoods,
which can negatively impact human health.
Dumpsters and Trash
Cans
Steep Slopes
Sediment
Degradation of streambanks and negative
impacts on aquatic plant and wildlife
habitats
Public education handouts and other distributed materials address the pollutants listed above
that are associated with residential and industrial/commercial issues. Issues are also to be
addressed through articles in a newsletter distributed to both residents and businesses who
receive a utility bill. See Sections 1.6 and 1.8 for further information regarding distributed
educational materials.
1.5 Informational Website
A website containing information on the Town's stormwater program is maintained by the
Stormwater Program Specialist. The link for the website is:
https://mooresvillenc.gov/.r,00/Stormwater
The website includes a link to the Town of Mooresville Post Construction and Illicit Discharge
and Connection Ordinance, contact information for the Stormwater Maintenance Supervisor,
forms for post construction stormwater control measures and general stormwater pollution
prevention information. The website also includes information regarding the six minimum
measures, how to volunteer to mark storm drains, and how to report an illicit discharge and an
11

up-to-date version of this SWMP which includes annual reporting information for the previous
fiscal year.
1.6 Distribution of Public Education Materials
Educational information about stormwater, stormwater pollution, and stormwater pollution
prevention is distributed periodically through the utility bill mailer and through flyers and
handouts distributed at various events in Mooresville throughout the year. Educational
materials are also distributed in the field when conducting illicit discharge investigations or
routine facility inspections.
1.7 Hotline/Helpline
A stormwater hotline/helpline for requesting assistance with stormwater related issues is
maintained and advertised on the Town's stormwater website.
(https://www.mooresvillenc.90v/500/Stormwater). The hotline/helpline is also listed on
distributed educational materials.
1.8 Public Education and Outreach Program
The Town's Stormwater Public Education and Outreach Program provides educational
information to residents about how they can protect water quality and reduce stormwater
pollution. Information is provided through Town Voice articles, the Town of Mooresville
Stormwater website, handouts and door hangers. Educational demonstrations and
presentations are also available upon request.
The Town of Mooresville is a member of the Regional Stormwater Partnership of the Carolinas,
which is a non-profit organization that provides an opportunity for municipalities in the region
to collaborate on projects related to public education, outreach, and training. The RSPC allows
the Town of Mooresville to reach a wider audience and provide more outreach, education, and
public information than would be possible for us as an individual municipality. The RSPC
maintains an educational website with stormwater information and information on how to
report an illicit discharge, http://regionalstormwater.org. Throughout the year, the RSPC holds
numerous workshops and educational events.
12

Table 6: Public Education and Outreach BMP Table
No.
BMP
Measurable Goal
Implementation
Frequency
Schedule
1.1
Goals and Objectives
Defined goals and objectives of the Local Public
Implemented in year one of
Review annually and
Education and Outreach Program based on
the permit cycle.
update if needed.
community wide issues.
1.2
Describe target
The permittee shall maintain a description of
Target pollutants and/or
Review annually and
pollutants and/or
the target pollutants and/or stressors and likely
stressors are identified in year
update if needed.
stressors
sources.
one of the permit cycle.
1.3
Describe target
The permittee shall maintain a description of
Target audiences are
Review annually and
audiences
the target audiences likely to have significant
identified in year one of the
update if needed.
storm water impacts and why they were
permit cycle.
selected.
1.4
Describe residential and
The permittee shall describe issues, such as
Residential and
Review annually and
industrial/commercial
pollutants, likely sources of those pollutants,
industrial/commercial issues
update if needed.
issues
impacts, and the physical attributes of
are identified in year one of
stormwater runoff, in their education/outreach
the permit cycle.
program.
1.5
Informational Web Site
The permittee shall promote and maintain, an
Informational website will
Review annually and
internet web site designed to convey the
continue to be maintained
update if needed.
program s message.
throughout permit cycle.
1.6
Distribute public
The permittee shall distribute stormwater
Public education materials
Public education
education materials to
educational material to appropriate target
will be distributed beginning
materials will be
identified target
groups. Instead of developing its own materials,
in year one of permit cycle.
distributed at least
audiences and user
the permittee may rely on Public Education and
twice per year
groups. For example,
Outreach materials supplied by the state,
throughout the
schools, homeowners,
and/or other entities through a cooperative
permit cycle.
and/or businesses.
agreement, as available, when implementing its
own program.
1.7
Maintain Hotline/Help
The permittee shall promote and maintain a
Hotline/Helpline will
Continuously
line
stormwater hotline/helpline for the purpose of
continue to be maintained
maintained.
public education and outreach.
throughout the permit cycle.
1.8
Implement a Public
The permittee's outreach program, including
Public Education and
Review annually and
Education and Outreach
those elements implemented locally or through
Outreach program will be
update if needed.
Program.
a cooperative agreement, shall include a
continued throughout the
combination of approaches designed to reach
permit cycle.
the target audiences. For each media, event or
activity, including those elements implemented
locally or through a cooperative agreement the
permittee shall estimate and record the extent
of exposure.
13

Section 2: Public Involvement and Participation Program
The Town of Mooresville implements a Public Involvement and Participation Program with the
goal of involving the citizens of the Town of Mooresville in the Stormwater Program and
complying with State and Local notice requirements. The Stormwater Program Specialist is
responsible for implementation and the program is funded through the Stormwater Utility Fee.
The following sections discuss the BMPs implemented to fulfill these requirements. See Table 7
for the measurable goal, frequency and implementation schedule for each BMP.
2.1 Public Review and Comment on Stormwater Plan
The Town of Mooresville Stormwater Plan is posted on the Town's Stormwater website
(https://mooresvillenc.gov/r,00/stormwater). The Stormwater Program Specialist is available to
respond to any questions or comments from citizens. A public meeting will be scheduled before
the end of the permit cycle.
2.2 Target Pollutants and/or Stressors
See Section 1.2 for information regarding targeted pollutants and/or stressors.
2.3 Target Audiences
See Section 1.3 for additional information regarding target audiences.
2.4 Residential and Commercial Issues
See Section 1.4 for information regarding residential and commercial issues.
14

Table 7: Public Involvement and Participation BMP Table
No.
BMP
Measurable Goal
Implementation
Frequency
Schedule
2.1
Allow the public an
The permittee shall conduct at least one
Stormwater Plan is made
Stormwater Plan will
opportunity to review
public meeting during the term of the
available to the public
be available
and comment on the
permit to allow the public an
throughout the permit cycle.
throughout the permit
Stormwater Plan
opportunity to review and comment on
cycle.
the Stormwater Plan.
2.2
Describe target
The permittee shall maintain a
Target pollutants and/or
Review annually and
pollutants and/or
description of the target pollutants
stressors are identified in year
update if needed.
stressors
and/or stressors and likely sources.
one of the permit cycle.
2.3
Describe target
The permittee shall maintain a
Target audiences are identified
Review annually and
audiences
description of the target audiences likely
in year one of the permit cycle.
update if needed.
to have significant storm water impacts
and why they were selected.
2.4
Describe residential
The permittee shall describe issues,
Residential and
Review annually and
and
such as pollutants, likely sources of
industrial/commercial issues are
update if needed.
industrial/commercial
those pollutants, impacts, and the
identified in year one of the
issues
physical attributes of stormwater
permit cycle.
runoff, in their education/outreach
program.
�5

Section 3: Illicit Discharge Detection and Elimination Program
The Town of Mooresville implements an Illicit Discharge Detection and Elimination program
with the goal of detecting, eliminating and prohibiting non-stormwater discharges. The
Stormwater Program Specialist is responsible for implementation and the program is funded
through the Stormwater Utility Fee. The following sections discuss the BMPs implemented to
fulfill these requirements. See Table 6 for the measurable goal, frequency and implementation
schedule for each BMP.
3.1 Illicit Discharge Detection and Elimination Program
The illicit discharge detection and elimination program will be detailed in a written document
maintained by the Stormwater Program Specialist. This document will include details regarding
the assessment of the program, how the program is to be evaluated, and how it is to be
integrated.
3.2 Legal Authorities
The Town of Mooresville Post Construction and Illicit Discharge and Connection Ordinance
became effective September 2, 2014. Article V of the Post Construction and Illicit Discharge and
Connection Ordinance defines illicit discharges and illicit connections. Article VI of the
ordinance discusses enforcement and the procedure to be followed in the event of violations of
the ordinance. There have been no updates to the ordinance since the chapter took effect on
September 2, 2014.
3.3 Storm Sewer System Map of Major Outfalls
The Town of Mooresville maintains a GIS map of the municipal storm sewer system including
inlets, pipes, outfalls and major outfalls. This map also shows rivers and streams in the area.
This map is updated periodically to reflect new construction and new information.
3.4 Dry Weather Flow Detection Program
Details and written procedures associated with the dry weather flow detection program are
detailed in the Illicit Discharge Detection and Elimination program document.
3.5 Investigate Sources of Identified Illicit Discharges
Article VI, Section 25-31 of the Phase II Post Construction and Illicit Discharge and Connection
Ordinance details the procedure for investigating reported illicit discharges. The Illicit
Discharge Detection and Elimination Program document shall also detail the process for
investigating illicit discharges.
3.6 Track and Document Investigations of Illicit Discharges
Each report of an illicit discharge is tracked using a database. Data tracked for each report
includes: the date(s) the illicit discharge was observed and reported, the results of the
investigation, any follow-up that was required, and the date the investigation was closed. This
database and all other documentation of illicit discharges are to be maintained by the
Stormwater Program Specialist.
7:

3.7 Employee Training
All employees who as part of their normal job responsibilities may come into contact with or
otherwise observe an illicit discharge will receive training at least once per year. Training will
include information on how to recognize an illicit discharge and how to report the illicit
discharge. Training can be in the form of posters, handouts and presentations. Documentation
of training will be kept by the Stormwater Program Specialist.
3.8 Public Education
The Stormwater Program Specialist will maintain information on the Town's stormwater
website about illicit discharges including improper disposal of waste. Information about illicit
discharges will be periodically distributed through articles in the Town Voice Newsletter and
other distributed materials.
3.9 Public Reporting
The Town's stormwater website includes a section on illicit discharges which includes a phone
number and email address that the public is encouraged to use to report suspected illicit
discharges. The report of an illicit discharge will prompt the Stormwater Program Specialist to
begin carrying out procedures detailed in Article VI of the Phase II Post Construction and Illicit
Discharge and Connection Ordinance.
3.10 Enforcement of the IDDE Ordinance
A database with data showing the date and address for each NOV issued is maintained by the
Stormwater Program Specialist. This database can be used to track the number of NOVs sent to
each address over time so that chronic violators can be recognized, and appropriate measures
can be pursued.
17

Table 8: Illicit Discharge Detection and Elimination Program BMP Table
No.
BM P
Measurable Goal
Implementation
Frequency
Schedule
3.1
Maintain an Illicit
Maintain a written Illicit Discharge Detection
A written IDDE program is
IDDE program
Discharge Detection
and Elimination Program, including provisions
maintained throughout the
will be reviewed
and Elimination
for program assessment and evaluation and
permit cycle.
and updated as
Program
integrating program.
needed.
3.2
Maintain adequate
The permittee shall maintain IDDE ordinances
Phase II Post Construction
Review annually
legal authorities
or other regulatory mechanisms that provides the
and Illicit Discharge and
and update if
legal authority to prohibit illicit connections and
Connection Ordinance
needed.
discharges.
became effective September
2 201 .
3.3
Maintain a Storm
The permittee shall maintain a current a map
Map of storm sewer system
Map will be
Sewer System Map of
showing major outfalls and receiving streams.
with major outfalls is
updated as
Major Outfalls.
updated periodically
needed.
throughout the permit cycle.
3.4
Implement a program
The permittee shall maintain a program for
Dry weather flow detection
Review annually
to detect dry weather
conducting dry weather flow field observations in
program is maintained
and update if
flows
accordance with written procedures.
throughout the permit cycle.
needed.
3.5
Investigate sources of
The permittee shall maintain written procedures
Procedures for investigation
Review annually
identified illicit
for conducting investigations of identified illicit
of identified illicit discharges
and update if
discharges.
discharges.
are implemented during year
needed.
one of the permit cycle.
3.6
Track and document
For each case the permittee shall track and
Tracking and documentation
Illicit discharge
investigations illicit
document 1) the date(s) the illicit discharge was
of illicit discharges is
investigations will
discharges
observed; 2) the results of the investigation; 3)
implemented at the start of
be tracked and
any follow-up of the investigation; and 4) the
the permit cycle.
documented
date the investigation was closed.
throughout the
permit cycle.

3.7
Provide Employee
The permittee shall implement and document a
Employee training for
Appropriate
Training
training program for appropriate municipal staff,
appropriate municipal staff
municipal staff
who as part of their normal job responsibilities,
is implemented in the first
will receive
may come into contact with or otherwise observe
year of the permit cycle.
training at least
an illicit discharge or illicit connection.
once per year.
3.8
Provide Public
The permittee shall inform public employees,
Public education materials
Public education
Education
businesses, and the general public of hazards
will be distributed beginning
materials will be
associated with illegal discharges and improper
in year one of permit cycle.
distributed at least
disposal of waste.
once per year
throughout the
ermit c cle.
3.9
Provide a public
The permittee shall promote, publicize, and
A public reporting
Continuously
reporting mechanism
facilitate a reporting mechanism for the public
mechanism is provided and
provided and
and staff to report illicit discharges and establish
maintained throughout the
maintained
and implement citizen request response
permit cycle.
throughout the
procedures.
permit cycle.
3.10
Enforcement of the
The permittee shall implement a mechanism to
A mechanism to track the
Enforcement of
IDDE ordinance
track the issuance of notices of violation and
enforcement of the IDDE
the IDDE
enforcement actions as administered by the
ordinance is maintained
ordinance will be
permittee. This mechanism shall include the
throughout the permit cycle.
tracked and
ability to identify chronic violators for initiation
documented
of actions to reduce noncompliance.
throughout the
ermit c cle.
19

Section 4: Construction Site Runoff Controls Program
The Town of Mooresville relies upon the North Carolina Division of Energy, Mineral, and Land
Resources Sediment and Erosion Control Program and Iredell County Erosion Control Section
to comply with this minimum measure. The Town of Mooresville and Iredell County entered
into an Interlocal Agreement for Enforcement Services of Iredell County Soil Erosion and
Sediment Control Ordinance on September 15, 2009.
The Town of Mooresville will continue to document reports of issues with construction site
runoff controls and reports to Iredell County Erosion Control Section.
Section 5: Post Construction Site Runoff Controls Program
The Town of Mooresville implements and enforces a Post -Construction Site Runoff Controls
Program with the goal of addressing 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 discharge into
the MS4. Another objective of this program is to address post -construction runoff with the
Phase II Post Construction and Illicit Discharge and Connection Ordinance and to ensure long-
term operation and maintenance of stormwater control measures. The Stormwater Program
Specialist is responsible for implementation and the program is funded through the Stormwater
Utility Fee. The following sections discuss the BMPs implemented to fulfill these requirements.
See Table 2 for the measurable goal, frequency and implementation schedule for each BMP.
5.1 Legal Authorities
The Town of Mooresville adopted the Post Construction and Illicit Discharge and Connection
Ordinance, effective September 2, 2014. This ordinance establishes the legal authorities to meet
the objectives of the Post Construction Site Runoff Controls program.
The ordinance details requirements for stormwater control measures and refers to the Town of
Mooresville Land Development Standards, which references the latest edition of the Stormwater
Best Management Practices Manual prepared by NCDEQ, for the design requirements. The
ordinance establishes design and review criteria for the construction, function and use of
structural stormwater control measures (SCMs) that may be used to meet the standards
established by this ordinance and the Town of Mooresville Land Development Standards as well
as the administrative procedures for the submission, review, approval and disapproval of
stormwater management plans, and for the inspection of approved projects. Plan reviews and
inspections are carried out by Planning Department and Engineering Department staff.
Owners of post -construction structural SCMs are required to record and submit an Operation
and Maintenance agreement for each SCM. The operation and maintenance agreement includes
a statement that the Stormwater Maintenance Supervisor has the right to enter the facility if
they have reason to believe it has become necessary to inspect, monitor, maintain, repair or
reconstruct the SCM. Owners are also required to submit annual inspection reports that have
been signed by a qualified professional as defined by the ordinance beginning January ist of the
20

calendar year after the date of the as -built certification and each year thereafter on or before
March 31st of that calendar year.
5.2 Strategies which include SCMs appropriate for the MS4
The Town of Mooresville Land Development Standards states that structural stormwater control
measures are to be designed following using the latest version of the Stormwater Design Manual
prepared by NCDEQ.
5.3 Plan Reviews
The Land Development process is described on the Land Development website,
https://mooresvillenc.90v/2gl/Land-Development . Plan reviews and approvals are conducted
by Planning Department and Engineering Department staff. A Minimum Requirements
checklist is utilized includes requiring engineering documentation and details for stormwater
containment including maintenance and operation plan.
5.4 Inventory of Projects with Post -Construction Structural
Stormwater Control Measures
An inventory of post -construction structural stormwater control measures located within the
Town's corporate limits and required by the Phase II Post Construction and Illicit Discharge and
Connection Ordinance is maintained by the Stormwater Program Specialist.
5.5 Deed Restrictions and Protective Covenants
The Town of Mooresville issues plan approval for the final construction plans. Once the
construction begins Town staff inspects the project for plan compliance throughout the entire
process. Once construction is complete the Town requires as-builts and certifications from the
consulting engineer that all infrastructure is built according to plan and subsequently Town
standards.
Stormwater Operation and Maintenance Agreements, signed by owners of Post Construction
Stormwater Control Measures, include a statement that the owner of the SCM agrees to notify
the Town of Mooresville of any problems with the system or prior to any changes to the system
or responsible party.
5.6 Mechanism to require long-term operation and maintenance of
Stormwater Control Measures (SCMs)
The Phase II Post Construction and Illicit Discharge and Connection Ordinance requires that all
owners of post construction structural stormwater control measures installed as a requirement
of this ordinance to submit an Operation and Maintenance Agreement to the Engineering
Technician. The Operation and Maintenance Agreement requires the owner to continuously
operate and maintain the stormwater control and management facilities. The agreements also
detail the important maintenance procedures and inspection activities to be performed for the
specific type of structural stormwater control measure. Owners of these structural stormwater
control measures are also required by the ordinance to submit annual inspection reports
performed by a qualified professional as defined by the ordinance. Operation and maintenance
21

plans and annual inspection reports for Town owned and maintained stormwater control
measures are maintained by the Stormwater Program Specialist.
5.7 Inspections
Procedures for inspections are included in the Operation and Maintenance Agreement signed,
recorded and submitted by the owning entity of the structural stormwater control measure. The
Town of Mooresville requires that owners of post -construction structural stormwater control
measures submit an annual inspection report performed by a qualified professional, as defined
by the ordinance, beginning January ist of the calendar year after the date of the as -built
certification and each year thereafter on or before March 31st of that calendar year. All
inspection reports and any related documentation submitted to the Town of Mooresville is
maintained by the Stormwater Program Specialist.
5.8 Educational materials and training for developers
The Land Development Process Manual gives an overview of the land development process for
plan review. This manual refers to the Land Development Standards for design standards. After
plan approval, the developer receives a checklist that details requirements including recording
and submitting the Operation and Maintenance Agreement.
5.9 Enforcement
The Stormwater Program Specialist tracks information regarding issued notices of violation and
any enforcement actions taken including the property owner and location of the structural
stormwater control measure. Letters are mailed to the owners of post -construction stormwater
control measures for not submitting annual inspection reports by March 31, as required by the
Town of Mooresville Post Construction and Illicit Discharge and Connection Ordinance.
22

Table 2: Post Construction Site Runoff Controls Program BMP Table
No.
BMP
Measurable Goal
Implementation
Schedule
Frequency
5.1
Adequate legal
Maintain through ordinance, or other regulatory mechanism,
The Phase II Post
Review annually
authorities
adequate legal authorities to meet the objectives of the Post-
Construction and
and update if
Construction Site Runoff Controls Stormwater Management
Illicit Discharge and
needed.
program.
Connection
Ordinance became
The permittee shall have the authority to review designs and
effective September
proposals for new development and redevelopment to
2, 2014.
determine whether adequate stormwater control measures
will be installed, implemented, and maintained.
The permittee shall have the authority to 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.
The permittee shall have the authority to 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 the Post -Construction Stormwater Management
Program.
5.2
Strategies which
Strategies with include Stormwater Control Measures
Post Construction
Review annually
include Stormwater
(SCMs) appropriate for the MS4, include, but are not
and Illicit Discharge
and update if
Control Measures
limited to compliance with i5A NCAC 02H Section .i000
and Connection
needed.
(SCMs) appropriate
effectively meets the Post -construction Stormwater Runoff
Ordinance became
for the MS4
control requirements
effective September
2, 201
23

5.3
Plan reviews
The permittee shall conduct site plan reviews of all new
Implemented during
Plan reviews
development and redeveloped sites that disturb greater than
first year of permit
conducted as
or equal to one acre (including sites that disturb less than
cycle.
required
one acre that are part of a larger common plan of
throughout
development or sale). The site plan review shall address
permit cycle.
how the project applicant meets the performance standards
and how the project will ensure long-term maintenance.
5.4
Inventory of projects
The permittee shall maintain an inventory of projects with
An inventory is
Review annually
with post-
post -construction structural stormwater control measures
maintained
and update if
construction
installed and implemented at new development and
throughout the
needed.
structural
redeveloped sites, including both public and private sector
permit cycle.
stormwater control
sites located within the permittee's corporate limits that are
measures
covered by its post -construction ordinance requirements.
5.5
Deed Restrictions
The permittee shall provide mechanisms such as recorded
Implemented as part
Review and
and Protective
deed restrictions and protective covenants that ensure
of the plan approval
update as
Covenants
development activities will maintain the project consistent
and construction
needed.
with approved plans.
inspection process.
5.6
Provide a
The permittee shall implement or require an operation and
Operation and
Operation and
mechanism to
maintenance plan for the long-term operation of the SCMs
Maintenance
Maintenance
require long-term
required by the program. The operation and maintenance
Agreements and
Plans are
operation and
plan shall require the owner of each SCM to perform and
annual inspection
required to be
maintenance of
maintain a record of annual inspections of each SCM.
reports are required
submitted upon
Stormwater Control
Annual inspection of permitted SCMs shall be performed
per the Post
as -built
Measures (SCMs)
by a qualified professional.
Construction and
certification.
Illicit Discharge and
Annual
Connection
inspection
Ordinance, which
reports are
became effective
required to be
September 2, 2014
submitted by
March 31st of
each year.
24

5.7
Inspections
To ensure that all stormwater control measures meet the
Written procedures
Written
permittee's performance standards and are being
per the Post
procedures will
maintained pursuant to the maintenance agreement, the
Construction and
be reviewed
permittee shall develop and implement a written inspection
Illicit Discharge and
annually and
program for structural stormwater controls installed
Connection
updated if
pursuant to the permittee's post -construction program.
Ordinance, effective
needed.
September 2, 2014.
Inspection
The permittee shall document and maintain records of
Inspection records
records
inspections, findings and enforcement actions and make
submitted
them available for review by the permitting authority.
annually to the
Town will be
maintained
continuously
throughout
permit c cle.
5.8
Educational
The permittee shall make available through paper or
Information
Information and
materials and
electronic means, ordinances, post -construction
available throughout
materials will be
training for
requirements, design standards checklist, and other
the permit cycle.
available to
developers
materials appropriate for developers. New materials may
developers
be developed by the permittee, or the permittee may use
throughout the
materials adopted from other programs and adapted to the
permit cycle.
permittee's new development and redevelopment program.
5.9
Enforcement
The permittee shall track the issuance of notices of violation
Implemented in year
Enforcement will
and enforcement actions. This mechanism shall include the
one of the permit
be tracked and
ability to identify chronic violators for initiation of actions
cycle.
documented
to reduce noncompliance.
continuously
throughoutthe
ermit c cle.
25

Section 6: Good Housekeeping and Pollution Prevention for
Municipal Operations
The Town of Mooresville implements a Good Housekeeping and Pollution Prevention Program
for municipal operations with the goal of preventing or reducing pollutant runoff from
municipal operations. This program includes employee training to prevent and reduce
stormwater pollution from municipal activities. The Stormwater Program Specialist is
responsible for implementation and the program is funded through the Stormwater Utility Fee.
The following sections discuss the BMPs implemented to fulfill these requirements. See Table
for the measurable goals, frequency and implementation schedule for each BMP.
6.1 Inventory of municipally owned or operated facilities
An inventory of all municipally owned or operated facilities that have the potential to generate
polluted stormwater runoff has been developed and is maintained by the Stormwater Program
Specialist.
6.2 Operation and Maintenance (O&M) for municipally owned or
operated facilities
All municipally owned or operated facilities identified by the inventory as having the potential to
generate polluted stormwater runoff have a Stormwater Operation and Maintenance (O&M)
Plan. Stormwater O&M Plans detail the stormwater pollution prevention and good
housekeeping practices utilized by the employees at that facility. Each Stormwater O&M Plan
also details the frequency of facility inspections and the regular maintenance activities.
Stormwater O&M Plans for each facility are located either at the facility or in the Stormwater
Program Specialist's office if it is impractical to keep the plan at the facility. Operation and
Maintenance Plans for each facility are reviewed periodically and amended as needed.
Amendments to the Operation and Maintenance Plans are documented in the Operation and
Maintenance Plan for the facility.
6.3 Spill Response Procedures
The Stormwater O&M Plan for each facility contains Spill Response Procedures and a Spill
Response Log to be completed in the event of a spill.
6.4 Streets, roads, and public parking lots maintenance
The Town of Mooresville implements BMPs to reduce polluted stormwater runoff from
municipally -owned streets, roads, and public parking lots. The Town of Mooresville utilizes a
street sweeper to clean municipal streets and roads regularly and parking lots as needed. The
Stormwater Program Specialist is to track the streets swept monthly by the street sweeper. The
Town of Mooresville will evaluate the effectiveness of this BMP based off the number of streets
swept and quantity of pollutants removed.
26

6.5 Operation and Maintenance (O&M) for municipally -owned or
maintained catch basins and conveyance systems
The stormwater maintenance staff is responsible for maintaining the municipally -owned and
maintained catch basins and conveyance systems. Stormwater maintenance staff conducts
routine maintenance as well as respond to maintenance requests from citizens. The Town of
Mooresville also issues contracts to outside contractors for improvements to existing
municipally owned drainage systems that cannot be handled by Town of Mooresville staff or are
part of a larger infrastructure improvement project.
6.6 Identify municipally owned or maintained structural stormwater
controls
An inventory of all municipally owned or maintained structural stormwater controls installed
for compliance with the Town of Mooresville Post Construction and Illicit Discharge and
Connection Ordinance will be maintained by the Stormwater Program Specialist. The list of
municipally -owned stormwater control measures is updated periodically as new stormwater
control measures are constructed.
6.7 O&M for municipally -owned or maintained structural stormwater
controls
All municipally owned or maintained structural stormwater controls installed for compliance
with the Town of Mooresville Post Construction and Illicit Discharge and Connection Ordinance
will be operated and maintained in accordance with the guidelines in the NCDEQ Stormwater
Design Manual at the time of construction and according to the engineered plans for the control
measure. These structural stormwater control measures will be regularly inspected by the
Stormwater Program Specialist, Stormwater Maintenance Supervisor, Engineering Technician,
or their designee. Inspection and maintenance records will be maintained by the Stormwater
Program Specialist.
6.8 Pesticide, Herbicide and Fertilizer Application Management
All employees who are required to apply pesticide, herbicide and/or fertilizer as part of their
regular duties possess the proper training and certifications to do so. Records of the necessary
training and certifications for each employee are maintained by the employee's supervisor as
part of the employee's personnel file.
6.9 Staff Training
Employees involved in implementing pollution prevention and good housekeeping practices are
to receive training from the Stormwater Program Specialist at least once per year, every year of
the permit cycle. Training will cover the stormwater pollution prevention and good
housekeeping practices utilized at that employee's facility or stormwater pollution prevention
information to be used while performing regular duties. Training is to be performed by the
Stormwater Program Specialist.
All new employees that attend new employee orientation receive stormwater training that
discusses general stormwater information such as the definition of stormwater, stormwater
27

pollution, and what employees can do to prevent or minimize stormwater pollution. This
training is conducted either through a training video or a handout.
6.10 Prevent or Minimize Contamination of Stormwater Runoff from
all areas used for Vehicle and Equipment Cleaning
Employees are encouraged to use the vehicle wash bay located in the Fleet Services Building at
the Public Services Operations Facility. This vehicle wash bay drains to an oil/water separator
and then to the sanitary sewer system. If the vehicle cannot be washed in the vehicle wash bay,
employees are encouraged to wash their vehicle at a commercial car wash facility.
Fire Station vehicles are washed per the instructions in the Fire Administration and Operations
Department Apparatus Washing General Order. This General Order requires that Mooresville
Fire Rescue limit the amount of water discharged during cleaning or washing of vehicles, use a
hose with a low GPM discharge of water, and not discharge chemical of any type into storm
drains or environment.
17,Nl

Table io: Good Housekeeping and Pollution Prevention Program BMP Table
No.
BM P
Measurable Goal
Implementation
Frequency
Schedule
6.1
Inventory of
The permittee shall maintain a current inventory of
Inventory is maintained
Review annually and
municipally owned or
facilities and operations owned and operated by the
throughout the permit
update if needed.
operated facilities
permittee with the potential for generating polluted
cycle.
stormwater runoff.
6.2
Operation and
The permittee shall maintain and implement, evaluate
Implemented in first
Review annually and
Maintenance (O&M)
annually and update as necessary an Operation and
year of permit cycle.
update if needed.
for municipally
Maintenance (O&M) program for municipal owned and
owned or operated
operated facilities with the potential for generating
facilities
polluted stormwater runoff. The O&M program shall
specify the frequency of inspections and routine
maintenance requirements.
6.3
Spill Response
The permittee shall have written spill response
Implemented in first
Review annually and
Procedures
procedures for municipal operations.
year of permit cycle.
update if needed.
6.4
Streets, roads, and
The permittee shall evaluate existing and new BMPs
Implemented in first
BMPs are evaluated
public parking lots
annually that reduce polluted stormwater runoff from
year of permit cycle.
annually and updated
maintenance
municipally -owned streets, roads, and public parking
if needed.
lots within their corporate limits. The permittee must
evaluate the effectiveness of these BMPs based on cost
and the estimated quantity of pollutants removed.
6.5
Operation and
The permittee shall develop and implement an O&M
Implemented in first
Review annually and
Maintenance (O&M)
program for the stormwater sewer system including
year of permit cycle.
update if needed.
for municipally-
catch basins and conveyance systems that it owns and
owned or maintained
maintains.
catch basins and
conveyance systems
29

6.6
Identify municipally
The permittee shall maintain a current inventory of
Implemented in first
Reviewed and updated
owned or maintained
municipally -owned or operated structural stormwater
year of permit cycle.
as needed.
structural stormwater
controls installed for compliance with the permittee's
controls
post -construction ordinance.
6.7
O&M for municipally-
The permittee shall maintain and implement an O&M
Implemented in first
Review annually and
owned or maintained
program for municipally -owned or maintained structural
year of permit cycle.
update if needed.
structural stormwater
stormwater controls installed for compliance with the
controls
permittee's post -construction ordinance.
The O&M program shall specify the frequency of
inspections and routine maintenance requirements.
The permittee shall inspect and maintain municipally -
owned or maintained structural stormwater controls in
accordance with the schedule developed by permittee.
The permittee shall document inspections and
maintenance of all municipally -owned or maintained
structural stormwater controls.
6.8
Pesticide, Herbicide
The permittee shall ensure municipal employees and
Implemented in first
All training and
and Fertilizer
contractors are properly trained and all permits,
year of permit cycle.
certifications are
Application
certifications, and other measures for applicators are
continuously
Management.
followed.
maintained and
updated as needed.
6.9
Staff training
The permittee shall implement an employee training
Implemented in first
Staff training for the
program for employees involved in implementing
year of permit cycle.
employees described
pollution prevention and good housekeeping practices.
here will be conducted
at least once per year.
6.io
Prevent or Minimize
The permittee shall describe and implement measures to
Implemented in year
Review annually and
Contamination of
prevent or minimize contamination of the stormwater
one of permit cycle.
update if needed.
Stormwater Runoff
runoff from all areas used for vehicle and equipment
from all areas used
cleaning.
for Vehicle and
Equipment Cleaning
30