HomeMy WebLinkAboutNCS000494_Lewisville Draft SWMP_20201209Draft Stormwater Management Plan
Town of Lewisville
NCS000494
January 1, 2020
Table of Contents
PART1: INTRODUCTION........................................................................................................................1
PART2: CERTIFICATION........................................................................................................................2
PART3:
MS4 INFORMATION..................................................................................................................
3
3.1
Permitted MS4 Area.....................................................................................................................
3
3.2
Existing MS4 Mapping.................................................................................................................4
3.3
Receiving Waters..........................................................................................................................5
3.4
MS4 Interconnection.....................................................................................................................5
3.5
Total Maximum Daily Loads (TMDLs).......................................................................................
6
3.6
Endangered and Threatened Species and Critical Habitat............................................................6
3.7
Industrial Facility Discharges.......................................................................................................6
3.8
Non-Stormwater Discharges.........................................................................................................7
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.................................................................................................................12
4.4
Co-Permittees..............................................................................................................................13
4.5
Measurable Goals for Program Implementation.........................................................................
14
PART 5: PUBLIC EDUCATION AND OUTREACH PROGRAM.........................................................16
PART 6: PUBLIC INVOLVEMENT AND PARTICIPATION PROGRAM...........................................20
PART 7: ILLICIT DISCHARGE DETECTION AND ELIMINATION PROGRAM .............................. 22
PART 8: CONSTRUCTION SITE RUNOFF CONTROL PROGRAM ................................................... 25
PART 9: POST -CONSTRUCTION SITE RUNOFF CONTROL PROGRAM........................................27
PART 10: POLLUTION PREVENTION AND GOOD HOUSEKEEPING PROGRAMS................32
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 Stornwater Permitted Industrial Facilities
Table 6: Non-Stormwater Discharges
Table 7: Summary of Target Pollutants and Sources
Table 8: Summary of Responsible Parties
Table 9: Shared Responsibilities
Table 10: Co-Permittee Contact Information
Table 11: Program Implementation BMPs
Table 12: Summary of Target Pollutants & Audiences
Table 13: Public Education and Outreach BMPs
Table 14: Public Involvement and Participation BMPs
Table 15: Illicit Discharge Detection and Elimination BMPs
Table 16: Qualifying Alternative Program Components for Construction Site Runoff Control Program
Table 17: Construction Site Runoff Control BMPs
Table 18: Qualifying Alternative Program(s) for Post -Construction Site Runoff Control Program
Table 19: Summary of Existing Post -Construction Program Elements
Table 20: Post Construction Site Runoff Control BMPs
Table 21: Pollution Prevention and Good Housekeeping BMPs
PART 1: INTRODUCTION
The purpose of this Stormwater Management Plan (SWMP) is to establish and define the means by which
the Town of Lewisville will comply with its National Pollutant Discharge Elimination System (NPDES)
Municipal Separate Stonn 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 Town of Lewisville 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 NCS000494, as issued by NCDEQ. This permit covers activities associated with
the discharge of stormwater from the MS4 as owned and operated by the Town of Lewisville and located
within the corporate limits of the Town of Lewisville.
In preparing this SWMP, the Town of Lewisville 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 pen -nit 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.
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 1
PART 2: CERTIFICATION
By my signature below I hereby certify, under penalty of law, that this document and all attachments were
prepared under my direction or supervision in accordance with a system designed to assure that qualified
personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the information, the
information submitted is, to the best of my knowledge and belief, true, accurate, and complete.
I am aware that there are significant penalties for submitting false information, including the possibility of
fines and imprisonment for knowing violations.
I am also aware that the contents of this document shall become an enforceable part of the NPDES MS4
Permit, and that both the Division and the Environmental Protection Agency have NPDES MS4 Permit
compliance and enforcement authority.
❑ I am a ranking elected official.
1]-1 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:
� tPA-11-,
Print
Name_
` ! 4
f f [ r C" vvl �G ►'1 5
Title:
j V11 Mo'40,
Signed this day of 20 W .
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 2
PART 3: MS4 INFORMATION
3.1 Permitted MS4 Area
This SWMP applies throughout the corporate limits of the Town of Lewisville, including all regulated
activities associated with the discharge of storinwater from the MS4. The map below shows the corporate
limits of Lewisville as of the date of this document.
TOWN OF LEWISVILLE &
Watershed Map
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DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 3
3.2 Existing MS4 Mapping
The current MS4 mapping includes stonnwater inflows, stormwater manholes, stormwater junction
boxes, culvert drain pipes, stormwater discharges, and settling basins. The MS4 area was mapped in 2012
and is being updated in 2020 to include previously unmapped areas. Stoi-inwater inflows include
information on material, diameter/box size, depth, and ground cover. Culvert drain pipes include
information on diameter, box size, material, ground cover, and length. Stormwater discharges include
information on material, diameter/box size, ground cover, and receiving stream. The stormwater
discharges mapped include outfalls, but specific classification of major outfalls versus all other points of
discharge has not occurred.
A link to the public MS4 GIS map can be found here:
httsill trc.ina s.arc is.com/aL)sIPublicliifonnatioti)iiidex.htnil'?a id= 15ea83ba0e2d4157a819882c12dd7f45
Legend
Stormwater Layers (expand)
Catch Basins
El Catch Basin
Pipe Inlets/Outlets
• Pipe Inlet
• Pipe Outlet
Junction Boxes
'J
Stormwater Manholes
Outfal Is
A
Stormwater Pipes
Culverts
5wales
Roads
— No Curb Gutter
— Yes Curb Gutter
TownLimits
Hydrol-ines
Hydro Lines
— Major Rivers
Hydro Lines
Hydro Lines
ucf
i t
i
MR r '
1
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 4
Table 1: Summary of MS4 Mapping
Percent of MS4 Area Mapped
100
%
No. of Major Outfalls* Mapped
I
total
*An outfall is a point where the MS4 discharges from a pipe or other conveyance (e.g. a ditch) directly
into surface waters. Major outfalls are required to be mapped to meet permit requirements. A major
outfall is a 36--inch diameter pipe or discharge from a drainage area > 50-acres; and, for industrial zoned
areas a 12-inch diameter pipe or a drainage area > 2-acres.
3.3 Receiving Waters
The Town of Lewisville 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 Mau_
o Impaired Waters and TMDL Map
o Most recent NCDEQ Final 303(d) List
Table 2: Summary of MS4 Receiving Waters
Receiving Water Name
Stream Index /
AU Number
Water Quality
Classification
303(d) Listed Parameter(s)
of Interest
Yadkin River
12-(80.7)
WS-Iv
Fecal Coliform (recreation)
Mill Creek
12-82
WS-IV
None listed
Shallow Ford Lakes
12-82-1
WS-IV
None listed
Panther Creek
12-87-(0.4)
C
None listed
Double Creek
12-87-1-(0.4)
C
None Iisted
BIacks Creek
12-87-1-1
WS-1V
None listed
Ellison Creek
12-88-(0.4)
C
None listed
EIlison Creek
12-88-(0.7)
WS-IV
None listed
Blanket Creek
12-90-(1)
C
None listed
Reynolds Creek
12-94-9
C
Ecological/biological integrity benthos
3.4 MS4 Interconnection
The Town of Lewisville MS4 is not interconnected with another regulated MS4 and directly discharges to
the receiving waters as listed in Table 2 above.
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 5
3.5 Total Maximum Daily Loads (TMDLs)
The TMDL(s) listed in Table 3 below have been approved within the MS4 area, as determined by the map
and list provided on the NCDEQ Modeling & Assessment Unit web page. The table also indicates
whether the approved TMDL has a specific stormwater Waste Load Allocation (WLA) for any watershed
directly receiving discharges from the permitted MS4, and whether a Water Quality Recovery Program
has been implemented to address the WLA.
Table 3: Summary of Approved TMDLs
Water Body Name
TMDL Pollutant(s) of
1 Stormwater
Water
Concern
Waste
Quality
Load
Recovery
Allocation
Program
YIN
YIN
Statewide
Mercury
N
N
Yadkin River Basin: Muddy Creek and
Turbidity
N
N
the Yadkin River
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, as detenmined by a review of the Endangered and Threatened Species and
Species of Concern by County for North Carolina Map and Listed species believe to or known to occur in
North Carolina map as provided by the U.S. Fish and Wildlife Service. 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: Summary of FederaIIy Listed Species/Habitat Impacted by Surface Water Quality
Scientific Name
Common name
Species Group
Federal
Listing Status
Haliaeetus leucoce halus
Bald Eagle
H leucoce halus
BGPA
Glypteinys muhlenber ii
Bog Turtle
G. muhlenber ii
T (S/A)
M otis septentrionalis
Northern long-eared bat
M. septentrionalis
T
Alasmidonta varicose
Brook Floater
A. varicose
ARS
3.7 Industrial Facility Discharges
The Lewisville MS4 jurisdictional area does not include any industrial facilities which hold NPDES
Industrial Stormwater Permits, as determined from the NCDEQ Active NPDES Stormwater Permit List
and/or Active Stormwater Permits Map. The Town of Lewisville has applied for No Exposure
Certification for their Public Works facility.
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 6
Table 5: NPDES Stormwater Permitted Industrial Facilities
Permit Number Facility Name
NIA
3.8 Non-Stormwater Discharges
The water quality impacts of non-stormwater discharges have been evaluated by the Town of Lewisville
as summarized in Table 6 below. The unpermitted non-stonnwater flows listed as incidental do not
significantly impact water quality. The Town of Lewisville has evaluated residential and charity car
washing and street washing for possible significant water quality impacts.
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
Town of Lewisville.
Wash water associated with car washing that does not contain detergents or does not discharge directly
into the MS4 is considered incidental. However, these types of non-stormwater discharges that do
contain detergents have been evaluated by the Town of Lewisville to deterraine whether they may
significantly impact water quality.
Table 6: Nan-Stonmwater Discharges
Non-Stormwater Discharge
Water Quality Impacts
Water line and fire hydrant flushing
Incidental
Landscape irrigation
Incidental
Diverted stream flows
Incidental
Rising groundwater
Incidental
Uncontaminated groundwater infiltration
Incidental
Uncontaminated pumped groundwater
Incidental
Uncontaminated potable water sources
Incidental
Foundation drains
Incidental
Air conditioning condensate
Incidental
Irrigation waters
Incidental
Springs
Incidental
Water from crawls ace purnps
Incidental
Footing drains
Incidental
Lawn watering
Incidental
Residential and charity car washing
Possible
Flows from riparian habitats and wetlands
Incidental
Dechlorinated swimming pool discharges
Incidental
Street wash water
Possible
Flows from firefighting activities
Incidental
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 7
3.9 Target Pollutants and Sources
In addition to those target pollutants identified above, the Town of Lewisville is not aware of other
significant water quality issues within the permitted MS4 area. However, the Town has identified other
pollutants it will address including litter, yard waste, pet waste, and sediment. These determinations have
been made due to citizen complaints, employee investigations, citizen complaints, County inspections,
and State water quality testing.
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 Town of Lewisville has evaluated schools,
homeowners and businesses as target audiences that are likely to have significant stormwater impacts.
Table 7: Summary of Target Pollutants and Sources
Target Pollutant(s)
Likely Source(s)/Target Audience(s)
SWMP Program Addressing
Target Pollutant s /Audience s
Litter
Residents, Businesses, Schools
Public Education & Outreach,
Public Participation
Yard waste
Residential, Commercial
Public Education & Outreach,
Public Participation, Pollution
Prevention & Good
Housekeeping
Pet waste
Residential, sewer, septic, wildlife,
Public Education & Outreach,
illicit discharge
Illicit Discharge Detection &
Elimination
Sediment
Commercial, Construction
Public Education & Outreach,
Constriction site run-off control
Illicit Discharge
Residential, Commercial, municipal
Public Education & Outreach,
staff
Illicit Discharge Detection &
Elimination, Pollution
Prevention & Good
Housekeeping
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 8
PART 4: STORMWATER MANAGEMENT PROGRAM ADMINISTRATION
4.1 Organizational Structure
The Town of Lewisville Public Works Department is responsible for Public Education & Outreach,
Public Involvement & Participation, Illicit Discharge Detection & Elimination, Post -Construction
Storrwater Management, and Pollution Prevention/Good Housekeeping for Municipal Operations.
Construction Site Runoff Control is delegated to the Winston-Salem/Forsyth County Stormwater and
Erosion Control Department. The Public Works Director is the Stormwater Administrator.
r------
j COUNTY SHERIFF }
L----------I
CITIZENS
TOWN ATTORNEY --F
MAYORICOUNCIL [BOARDS & COMMITTE
------------------------
TOWN MANAGER
FINANCE DIRECTOR
ACCOUNTING CLERK
TOWN CLERK PUBLIC WORKS DIRECTOR
2 MAINTENANCE TECHNICIANS
DEPUTIES
PLANNER
COMMUNICATIONS SPECIALIST I
OFFICE MANAGER
PART-TIME SEASONAL
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 9
Table 8: Summary of Responsible Parties
SWMP Component
Responsible Position
Staff Name
Department
Stomiwater Program
Public Works Director
Ryan Moser
Public Works
Administration
SWMP Management
Public Works Director
Ryan Moser
Public Works
Public Education & Outreach
Public Works Director
Ryan Moser
Public Works
Public Involvement &
Public Works Director
Ryan Moser
Public Works
Participation
Illicit Discharge Detection &
Public Works Director
Ryan Moser
Public Works
Elimination
Construction Site Runoff Control
City of Winston/Salem
Matthew Osbourne
Winston-Salem
Erosion Control
Stormwater &
Erosion Control
Post -Construction Stormwater
Public Works Director
Ryan Moser
Public Works
Management
Pollution Prevention/Good
Public Works Director
Ryan Moser
Public Works
Housekeeping for Municipal
Operations
Municipal Facilities Operation &
Public Works Director
Ryan Moser
Public Works
Maintenance Program
Spill Response Program
Public Works Director
Ryan Moser
Public Works
MS4 Operation & Maintenance
Public Works Director
Ryan Moser
Public Works
Program
Municipal SCM Operation &
Public Works Director
Ryan Moser
Public Works
Maintenance Program
Pesticide, Herbicide & Fertilizer
Public Works Director
Ryan Moser
Public Works
Management Program
Vehicle & Equipment Cleaning
Public Works Director
Ryan Moser
Public Works
Program
Pavement Management Program
Public Works Director
Ryan Moser
Public Works
Total Maximum Daily Load
Public Works Director
Ryan Moser
Public Works
(TMDL) Requirements
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 10
4.2 Program Funding and Budget
In accordance with the issued permit, the Town of Lewisville shall maintain adequate funding and
staffing to implement and manage the provisions of the SWMP and comply with the requirements of the
NPDES MS4 Permit. The budget includes the permit administering and compliance fee, which is billed
by the Division annually.
Funding for the Stormwater Management Program comes predominantly from property taxes. The fiscal
year budget below demonstrates the allocation to Stormwater activities for 2019-2020, although salaries
for stormwater staff are funded through the Public Works department.
The fiscal analysis completed for 2017 showed a need to increase the stormwater funding which was
approved for each year since 2017. This led from a budget of $84,650 in 2017 to an increased budget of
$238,907 in 2020.
2020 Stormwater Budget
Description
Budget Beg. Balance
Debit
Credit
End Balance
EDUCATIONIPROMOTIONAL
1,000.00
0.00
0.00
0.00
SUPPLIES
200.00
44.92
0.00
44.92
SAFETY MATERIALS
100.00
0.00
000
0.00
TRAVEL & TRAINING
3,800.00
2oan0
0.00
200.00
PRINTING & BINDING
500.00
0.00
0.00
0.00
MAINT/REPAIR EQUIPMENT
750.00
0.00
0.00
0.00
EQUIPMENT RENTAULEASE
1.500.00
0.00
0.00
0.00
DUESISUBSCRIPTIONS
2,000.00
1,222.00
0.00
1,222.00
MISC
250.00
0-00
0.00
0.00
TRANSIT TO STORMWATER CAP
95,000,00
95,000.00
0.00
95,Ono.00
CONTRACTED SERVICES
26.250.00
3,863.00
0.00
3,863.00
DRAINAGE SYSTEM REPAIRS
91,603.00
59,803.00
0,00
59,603.00
CONT.SERV-SWEFPIRESIDENTIAL
10,000.00
0.00
0,00
0.00
CONT SERV-SWEEPIDOWNTOWN
6,954.00
1,832.00
0,00
1,832.00
`PARTIAL LISTING SELECTED' 238,907.00 161,764.92 0.00 161,764 92
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 11
4.3 Shared Responsibility
The Town of Lewisville will share the responsibility to implement portions of the following minimum
control measures, which are at least as stringent as the corresponding NPDES MS4 Permit requirement.
The Town of Lewisville remains responsible for compliance if the other entity fails to perform the permit
obligation, and may be subject to enforcement action if neither the Town of Lewisville 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
Legal
Permit Requirement
Implementing Entity & Program Name
Agreement
YIN
Public Education & Outreach
Piedmont Triad Regional Council — Stonnwater SMART
Y
Public Involvement &
Piedmont Triad Regional Council — Stonnwater SMART
Y
Participation
Illicit Discharge & Detection
Piedmont Triad Regional Council Stonnwater SMART
Y
Construction Site Runoff
Forsyth County Erosion, Sedimentation and Pollution
Y
Control
Control Unit
Pollution Prevent & Good
McCoy's Services — Residential and Downtown Street
Y
Housekeeping
Sweeping
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 12
4.4 Co-Permittees
The are no other entities applying for co-pennittee status under the NPDES MS4 permit number
NCS000494 for the Town of Lewisville. Table 10 summarizes contact information for each co-permittee.
Table 10: Co-Permittee Contact Information
Co-Permittee MS4
Contact Person
Phone & E-Mail
Interlocal
Name
Agreement
YIN
N/A
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DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 13
4.5 Measurable Goals for Program Implementation
The Town of Lewisville will manage and report the following Best Management Practices (BMPs) for the
implementation of the Stormwater Management Program.
Table 11: Program Implementation BMPs
Permit
2.1.1: Adequate Funding and Staffing
Ref.
The permittee shall maintain adequate funding and staffing to implement and manage provisions of the SWMP
and meet all requirements of the permit.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
1.
Adequate Funding
Perform a fiscal analysis to ensure
1. Complete a fiscal gap
1. Permit year 1
1. Report gap analysis
adequate program funding and fully
analysis
value and outcome
2. Evaluate options for
2. Permit years 1-2
2. Report if completed or
fund the stormwater program and
meet all pen -nit requirements.
additional funding
not and current status
mechanisms, if needed.
3. Select and implement
3. Pen -nit years 3-5
3. Report what
new funding mechanism,
mechanism was selected
if needed.
and if it was
implemented
Permit
2.1.2 and Part 4: Annual Self -Assessment
Ref.
Measures to evaluate the performance and effectiveness of the SWMP program components at least annually.
Results shall be used by the permittee to modify the program components as necessary to accomplish the intent
of the Stormwater Program. The self -assessment reporting eriod is the fiscal year Jul 1— June 30 .
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
2.
Annual Self -Assessment
Perform an annual evaluation of
4. Prepare, certify and
1. Annually for Permit
1. Annual Self-
SWMP implementation, suitability of
submit the Annual Self
Years 1 — 4
Assessment received by
SWMP commitments and any
Assessment to NCDEQ
(FY20/21 FY23/24)
NCDEQ no later than
proposed changes to the SWMP
prior to October 31 st each
October 31st each year.
utilizing the NCDEQ Annual Self
year.
Assessment Template
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 14
Permit
1.6: Permit Renewal Application
Ref.
Measures to submit a permit renewal application prior to the expiration date of the NPDES MS4 permit.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Implementation
Annual Reporting
Metric
3.
Permit Renewal Application
Audit stormwater program
1. Participate in an
1. Determined by NC
1. Participation
implementation for compliance with
NPDES MS4 Permit
DEQ, but typically in
completed by the end of
the permit and approved SWMP, and
Compliance Audit, as
Year 4
the permit cycle.
utilize the results to prepare and
scheduled and perfonned
submit a pen -nit renewal application
by NC DEQ.
package.
2. Self -audit and
2. Permit Year 5
2. Submit Self -Audit to
document any
NC DEQ if required in
stormwater program
the permit renewal
components not audited
application package.
by NC DEQ utilizing the
Audit Template.
-DEQ
3. Prepare and submit the
3. Permit Year 5
3. Permit renewal
stonnwater permit
application package
renewal application.
received by DEQ prior to
cnnit expiration.
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 15
PART 5: PUBLIC EDUCATION AND OUTREACH PROGRAM
The Town of Lewisville will implement a Public Education and Outreach Program to distribute
educational materials to the community or conduct equivalent outreach activities about the impacts of
stone water discharges on water bodies and steps the public can take to reduce pollutants in storm water
runoff. This will be implemented both locally and/or through a cooperative agreement as deemed
necessary.
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 Town of
Lewisville 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 Audiences
Litter
Residential and commercial property owners, school -aged children
Nitrogen, phosphorus and other
nutrients and yard waste
Residents, HOA's, landscaping companies, and commercial
propeqy owners
Pet waste
Residents, HOA's, and the general public
Illicit discharges and connections
General public, businesses, municipal employees
Illegal dumping
General public, businesses, municipal employees
Excess sediment
Citizens of all ages, businesses, building contractors, municipal
employees
Mercury
General public, businesses
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 16
The Town of Lewisville will manage, implement and report the following public education and outreach
BMPs.
Table 13. Public Education and Outreach BMPs
Permit
3.2.2 and 3.2.4: Outreach to Targeted Audiences
Ref.
Measures to identify the specific elements and implementation of a Public Education and Outreach Program to
share educational materials to the community or conduct equivalent outreach activities about the impacts of
stormwater discharges on water bodies and how the public can reduce pollutants in stormwater runoff. The
permittee shall provide educational information to identified target audiences on pollutants/sources identified in
table 12 above, and shall document the extent of exposure of each media, event or activity, including those
elements implemented locally or throe h a cooperative agree ent.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Implementation
Annual Reporting
Metric
4.
Partnership with PTRC/Stormwater SMART
The Town will engage Stormwater
1. Arrange partnership
1. Permit year 1
1. Report date
SMART to provide and promote
with PTRC and establish
established and scope of
stormwater education and
legal agreement
work
environmental stewardship to
citizens, school -aged children,
2. Document the
partnership plan detailing
2. Annually after
partnership is established
2. Report date
partnership plan was
businesses, and staff.
specific commitments
approved
from Stormwater
SMART
3. Monitor Stormwater
3. Annually after
3. Report if completed or
SMART activities to
partnership is established
not and current status
ensure commitments are
met and dissolve
partnership if necessai
S.
Town Sponsored Events
The Town will distribute information
1. Develop or identify
1. Permit year 1
1. Report if completed or
about stormwater runoff and
informational handouts
not and current status
pollution during at least one event or
about stormwater runoff
festival each year.
and pollution
2. Staff or Stormwater
2. Annually after
2. Report the event
SMART staff will attend
handouts developed
attended and date(s)
one event or festival
annually
3. Document the number
3. Annually after
3. Report the number of
of handouts distributed
handouts developed
handouts distributed
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 17
6.
Social and Mass Media
The Town will engage Stormwater
1. Arrange partnership
1. Pen -nit year I
1. Report date
SMART to provide and promote
with PTRC and establish
established and scope of
stormwater education through social
legal agreement
work
media and mass media campaigns.
2. Document the
2. Annually after
2. Report date
partnership plan detailing
partnership is established
partnership plan was
specific commitments
approved
from Stormwater
SMART
3. Monitor Stormwater
3. Annually after
3. Report if completed or
SMART activities to
partnership is established
not and current status
ensure commitments are
met and dissolve
partnership if necessary
Permit
2.1.7, 3.2.3 and 3.6.5(c): Web Site
Ref.
Measures to provide a web site designed to convey the program's message(s) and provide online materials
including ordinances, or other regulatory mechanisms, or a list identifying the ordinances or other regulatory
mechanisms, providing the legal authority necessary to implement and enforce the requirements of the permit
and SWMP. The web page shall also provide developers with all relevant post -construction requirements,
design standards, checklists and/or other materials.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Implementation
Annual Reporting
Metric
7.
Stormwater Website
Use the Town website andlor
1. Update the website to
1. Permit year 1
1. Report if completed or
regional cooperative website to
include updated SWMP
not and current status
provide stormwater education
and organizational chart
information including ordinances,
2. Update the website
2. Permit years 1-5
2. Report if completed or
construction & post -construction
annually with events,
not and current status
requirements, IDDE, program
annual reports, and
information and FAQs. Provide the
SWMP changes.
option to submit information
3. Monitor the number of
3. Pen -nit years 1-5
3. Report the number of
electronically through the website,
visits to the Stormwater
visits
-Department page
4.
4,
4.
5.
5.
5.
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 18
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
8.
Stormwater Hotline
Maintain and promote Stormwater
1. Maintain storrnwater
I. Permit years 1-5
1. Report if completed or
Hotline so that citizens and
hotline
not and current status
businesses can call to report pollution
2. Promote the
2. Pen -nit years 2-5
2. Report if completed or
concerns and violations and to
stonnwater hotline on the
not and current status
request stonnwater information such
website, in the
as educational events and litter
newsletter, and on other
sweeps. Calls can also be made
educational materials
directly to the Stormwater
3. Establish a tracking
3. Permit year 1
3. Report if completed or
Department.
mechanism to document
not and current status;
the number and type of
calls received
4. Have the hotline
4. Pen -nit years 1-5
4. Report the number of
answered by a live
types of calls
person or voicemail and
check daily.
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 19
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 Town of Lewisville 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
9.
Stormwater Hotline
Maintain and promote Stormwater
See BMP #10
See BMP #10
See BMP #10
Hotline so that citizens and
businesses can call to report pollution
concerns and violations and to
request stormwater information such
as educational events and litter
sweeps. Calls can also be made
directly to the Stormwater
De artment. See BMP No, 10)
10.
Stormwater Website
Use the Town website and/or
See BMP #9
See BMP #9
See BMP #9
regional cooperative website to
provide stormwater education
information including ordinances,
construction & post -construction
requirements, IDDE, program
information and FAQs. Provide the
option to submit information
electronically through the website.
(See BMP No. 9)
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 20
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
lm lementatian
Metric
11.
Annual Litter Clean-up Events
Citizens and businesses will be
1. Identify public areas
1. Evaluate annually
1. Report if the areas
encouraged to participate in
that need clean-ups,
each permit year
have been identified
2. Coordinate clean-ups
2. Permit years 2-5
2. Report number of
community litter clean-up events.
On -site education regarding how
of public areas
events, participants
litter enters and pollutes local
and/or number of bags of
waterways will be provided.
litter collected
12.
Storm Drain Marking Program
Encourage volunteers to become
1. Identify priority areas
1. Pen -nit year 2
1. Report if the areas
involved by providing storm drain
that need storm drain
have been identified
marking kits at no cost to volunteer
marking
groups.
2. Create storm drain
2. Pen -nit year 3
2. Report if the kits are
marking kits and
available
romote availability
3. Provide materials at no
3. Permit year 3-5
3. Report the number of
cost to volunteer groups
kits provided and/or the
number of storm drains
marked
13.
Forsyth Creek Week
The Town will participate in Forsyth
1. Arrange partnership
1. Permit year 1
1. Report if the
Creek Week so that volunteer
with Forsyth Creek
partnership has been
opportunities are available to
Week
a roved
residents, schools, and businesses
2. Provide volunteer
2. Permit years 2-5
2. Report the number of
within the Town's jurisdiction.
activities through the
activities provided and
Stormwater Department
the number of
and/or cooperative
participants
agreement with
Extension or Stonmwater
SMART
14.
Partnership with PTRC/Stormwater SMART
The Town will engage Stormwater
1. See BMP #6
1. See BMP #6
1. See BMP #6
SMART to provide and promote
stormwater public involvement and
participation opportunities (See BMP
No. 6)
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 21
PART 7: ILLICIT DISCHARGE DETECTION AND ELIMINATION PROGRAM
The Town of Lewisville will develop, manage, implement, document, report and enforce an Illicit
Discharge Detection and Elimination Program which shall, at a minimum, include the following Illicit
Discharge Detection and Elimination BMPs.
Table 15: Illicit Discharge Detection and Elimination BMPs
Permit
3.4.1: MS4 Map
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
15.
Develop MS4 Map
Coordinate with the Piedmont Triad
1. Sign contract for work
1. Permit year 1
1. Report if completed or
Regional Council to develop a storm
not and current status
sewer map including stormwater
2. Receive digital GIS
2. Permit years 1-2
2. Report the % of the
conveyances, flow direction, major
database and map.
Town that has been
outfalls, and waters of the US
mapped and/or when
receiving stormwater discharges.
map is complete
16.
Update MS4 Map
Continually update the existing MS4
1. Add new data points
I. As needed
1. Report the number of
map as new development occurs.
as new developments and
new data points and
Utilize drawings and plans submitted
neighborhoods are built
outfalls added annual/
by engineers and developers to
2. Field verify submitted
2. As needed
2. Report the number of
update the existing map.
data points
field verified points
Permit
3.4.2: Regulatory Mechanism
Ref.
Measures to provide an IDDE ordinance or other regulatory mechanism that provides legal authority to
prohibit, detect, and eliminate illicit connections and discharges, illegal dumping and spills into the MS4,
includin enforcement procedures and actions.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
17.
Maintain IDDE Ordinance
The IDDE Ordinance charges the
1. Review ordinances
1. Permit year 1
1. Report if ordinance is
Stormwater Administrator or
and update if revision is
reviewed and if a
designee with implementing the
required to maintain
revision is made
IDDE program. The ordinance
legal authority
provides the legal authority to
prohibit, detect, and eliminate illicit
connections and discharges, illegal
dumping and spills into the MS4.
Update ordinance if required
DRAFTNCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 22
Table 15: Illicit Discharge Detection and Elimination BMPs
Permit
3.4.3: IDDE Plan
Ref.
Measures to maintain and implement a written IDDE Plan to detect and address illicit discharges, illegal
dumping and any non-stormwater discharges identified as significant contributors of pollutants to the MS4.
The plan shall provide standard procedures and documentation to:
a) Locate priority areas likely to have illicit discharges,
b) Conduct routine dry weather outfall inspections,
c) Identify illicit discharges and trace sources,
d) Eliminate the source(s) of an illicit discharge, and
e) Evaluate and assess the IDDE Program,
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal
Schedule for
Annual Reportings}
Implementation
Metric
18.
iDDE Plan
Develop and implement a written
1. Develop a written
1. Permit year 1
1. Report if completed or
IDDE Plan to detect and address
IDDE PIan
not and current status
illicit discharges, illegal dumping,
2. Locate priority areas
2. Permit year 1
2. Report if completed or
and non-stormwater discharges.
not and current status
3. Conduct routine dry
3. Permit years 2-5
3_ Report number of
weather outfall
outfalls inspected and
inspections
number of potential illicit
discharges identified
4. Evaluate IDDE plan
4. Pen -nit years 2-5
4. Report if completed or
and update as necessary
not and if any updates
were made
5_
5.
5.
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 23
Tattle 15: Illicit Discharge Detection and Elimination BMPs
19.
Staff Training
Develop an IDDE training program
1. Identify or develop an
1. Permit year 1
1. Report if completed or
for staff and contractors or provide
IDDE Training program
not and current status
training through a cooperative
agreement.
2. Provide annual
training to staff and
2. Permit years 2-5
2. Report if training was
completed, date, and
contractors that may
number of attendees
observe an illegal
discharge
3.
3.
3.
4,
4.
4,
5.
5.
5,
Permit
3.4.6: IDDE Reporting
Ref.
Measures for the public and staff to report illicit discharges, illegal dumping and spills. The mechanism shall be
publicized to facilitate reporting and shall be managed to provide rapid response by appropriately trained
personnel.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Implementation
Annual Reporting
Metric
20.
Stormwater Hotline
Maintain and promote Stormwater
1. See BMP #10
1. See BMP #10
See BMP #10
Hotline so that citizens and
businesses can call to report pollution
2.
2.
2.
concerns and violations. (See BMP
No. 10)
3
3.
3.
4.
4.
4.
5
5.
5.
21.
Stormwater Website
Use the Town website and/or
1. See BMP #9
1. See BMP #9
1. See BMP #9
regional cooperative website to
provide an opportunity for citizens
2•
2.
2.
and businesses to submit reports of
pollutions concerns and violations.
3
3.
3.
4•
4,
4.
(See BMP No. 9)
5.
5.
5.
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 24
PART 8: CONSTRUCTION SITE RUNOFF CONTROL PROGRAM
In accordance with 15A NCAC 0214.0153, the Town of Lewisville relies upon the North Carolina
Sedimentation Pollution Control Act (SPCA) of 1973 and the NCG010000 pen -nit for construction
activities as qualifying alternative programs to meet the NPDES MS4 Permit requirements for all
construction site runoff control measures to reduce pollutants in stormwater runoff from construction
activities that result in land disturbance of greater than or equal to one acre and any construction activity
that is part of a larger common plan of development that would disturb one acre or more.
Table 16: Qualifying Alternative Program Components for Construction Site Runoff Control Program
Permit
Legal
Meets Whole
Reference
State or Local Program Name
Authority
Implementing Entity
or Part of
Requirement
3.5.1 -
City of Winston-Salem/Forsyth
15A NCAC
Winston-Salem/Forsyth
Whole
3.5.4
County Erosion Control
Chapter 04
County Erosion Control
Delegated SPCA Program`
* The local delegated ,SPCA Program ordinance(s)/regulatory mechanism(s) can be found at-.
• https://www.cityofws.org/733/Erosion-Control
• https:Hlibrafy.municode.com/iie/lewisville/codes/unified development ordinance?nodeld=CH
CENOR ARTIVERCO 4-18ERSECOPL
The Town of Lewisville also implements the following BMPs to meet NPDES MS4 Permit requirements.
Table 17: Construction Site Runoff Control BMPs
Permit
3.5.1-3.5.4
Ref.
Provide an ordinance or other regulatory mechanism to require erosion and sediment controls, as well as sanctions to
ensure compliance
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
22.
Reliance on Sediment Pollution Control Act of 1973 meets 3.5.1-3.5.4
23.
Maintain an ordinance to require
1. Review ordinances
1. Permit year 1
1. Report if ordinance is
construction site operators to control
and update if revision is
reviewed and if a
waste. Update ordinance if required
required to maintain
revision is made
legal authority
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 25
Permit
3.5.5: Waste Management
Ref.
Measures to require construction site operators to control waste such as discarded building materials, concrete
truck washout, chemicals, litter, and sanitary waste at the construction site that may cause adverse impact to
water uali .
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
24.
Construction site waste management control is enforced by Forsyth CountylWinston Salem
Permit
3.5.6: Public Input
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
Im lementation
Metric
25.
Stormwater Hotline
Maintain and promote Stonnwater
1. See BMP #10
1. See BMP #10
See BMP #10
Hotline so that citizens and
businesses can call to report pollution
concerns and violations. (See BMP
No. 10)
26.
Stormwater Website
Use the Town websitc and/or
1. See BMP #9
1. See BMP #9
1. See BMP #9
regional cooperative website to
provide an opportunity for citizens
and businesses to submit reports of
pollutions concerns and violations.
(See BMP No. 9)
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 26
PART 9: POST -CONSTRUCTION SITE RUNOFF CONTROL PROGRAM
This SWMP identifies the minimum elements to develop, implement and enforce a program to address
stormwater runoff from new development and redevelopment projects that disturb greater than or equal to
one acre, including projects less than one acre that are part of a larger common plan of development or
sale, that are located within the Town of Lewisville 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 Town of Lewisville implements the following
State post -construction program requirements, which satisfy the NPDES Phase Il MS4 post -construction
site runoff control requirements as Qualifying Alternative Programs (QAPs) in the MS4 area(s) where
they are implemented.
Table 1 S: Qualifying Alternative Program(s) for Post -Construction Site Runoff Control Program
State QAP Name
State Requirements
Local Ordinance / RegulatoryMechanism
Reference
Water Supply Watershed (WS-IV)
15A NCAC 2B
Chapter C, Article III, 3-3.1
.0620 - .0624
The Town of Lewisville has existing requirements other than Qualifying Alternative Program(s) for
implementation of the NPDES Phase 11 MS4 post -constriction 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.
Town of Lewisville Watershed Area
Legend
Sireems
Water Supply Wate
Lewisville Past -Car
- Outside Lewisville 1
Outside Lewisville
N
A
9 inch =5.750 feet
This map and analysis ale provided 4A, le wilhwl v mnly of any k,,6. either wrem or implied. The of —firm wntpued in this rmipialar cm.kid by Stacy Tolhed
b le madonal purposes mIy and Was not prg and U. and is"enlable lorlegat engineerirp, or wrveymgp.'P =s llse of these materials
conct'itnl sacceptnceortttis disclaimer of Fiahery.
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 27
Table 19: Summary of Existing Post -Construction Program Elements
Permit Requirements for
Plan Review and Approval
Municipal Ordinance/Code Referenee(s)
and/or Document Titles
Date Adopted
3.6.2 a Authority
Chapter C, Article III, 3-1.4
6/11/09
3.6.3(a) & 15A NCAC 02H.0153(c)
Federal, State & Local Projects
Chapter C, Article III, 3-3.1
6/11/09
3.6.3 b Plan Review _-Chapter
C, Article 1II, 3-2.2
6/11/09
3.6.3(c) O&M Agreement
Chapter C, Article I11, 3-9.2
6/11/09
3.6.3 d O&M Plan
Chapter C, Article 1I1, 3-5.1 B
6/11/09
3.6.3(c) Deed
Restrictions/Covenants
Chapter C, Article III, 3-9.5
6/11/09
3.6.3 Access Easements
Chapter C, Article III, 3-9.5
6/11/09
Permit Requirements for
Inspections and Enforcement
Municipal Ordinance/Code Reference(s)
and/or Document Title(s)
Date Adopted
3.6.2 b Documentation
Chapter C, Article III, 3-9.3
6/11/09
3.6.2(c) Right of Entry
Chapter C, Article III, 3-9.3
6/11/09
3.6.4(a) Pre -CO Inspections
Chapter C, Article 1II, 3-2.2(A)(4)
6/11/09
3.6.4 b Compliance with Plans
Chapter C, Article 111, 3-9.1(A)
6/11/09
3.6.4 c Annual SCM Inspections
Chapter C, Article III, 3-9.1(B)
6/11109
3.6.4(d) Low Density Inspections
3.6.4(e) Qualified Professional
Chapter C, Article III, 3-9.1(B)
6/11/09
Permit Requirements for
Fecal Coliform Reduction
Municipal Ordinance/Code Reference(s)
and/or Document Title(s)
Date Adopted
3.6.6(a) Pet Waste
3.6.6(b) On -Site Domestic
Wastewater Treatment
Chapter C, Article III, 3-5.2(l)
6/11/09
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 28
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
Permit
3.6.5(a), 3.6.5(b), and 4.1.3: Minimum Post -Construction Reporting Requirements
Ref.
Measures to document activities over the course of the fiscal year (July 1 — June 30) including appropriate
information to accurately describe ra ess, status, and results.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
27.
Standard Reporting
Implement standardized tracking,
1. Track number of low
1. Continuously
1. Number of plan
documentation, inspections and
density and high density
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
approvals issued for low
Qualifying Alternative Program_plans
approved.
density and high density,
being implemented as listed in Tables
3. Maintain a current
3. Continuously
3. Summary of number
18 and 19.
inventory of low density
and type of SCMs added
projects and constructed
to the inventory; and
SCMs including SCM
number and acreage of
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.
inspections.
5. Track number of low
5. ContinuousIy
5. Number of low density
density inspections
inspections.
erformed.
6. Track number and
6. Continuously
6. Number and type of
type of enforcement
enforcement actions
actions taken.
taken.
Permit
2.3 and 3.6: Qualifying Alternative Program(s)
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
28.
This permit requirement is fully met by the existing post -construction program, see references provided in Table 18
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 29
Table 20: Post Construction Site Runoff Control BMPs
Permit
3.6.2. Legal Authority
Ref.
Measures to maintain adequate legal authorities through ordinance or other regulatory mechanism to: (a) review
designs and proposals for new development and redevelopment to determine whether adequate stormwater
control measures will be installed, implemented, and maintained, (b) request information such as stormwater
plans, inspection reports, monitoring results, and other information deemed necessary to evaluate compliance
with the Post -Construction Storinwater 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
29.
This permit requirement is fully met by the existing post -construction program, see references provided in Table 19
Permit
3.6.3: Plan Review and Approval
Ref.
Measures to maintain plan review and approval authority, standards and procedures to: (a) Require Federal,
State, and local government projects to comply with Post -Construction Program requirements throughout the
entire MS4 permitted area, unless the entity is subject to its own NPDES MS4 permit or a qualifying alternative
program, (b) Conduct site plan reviews of all new development and redeveloped sites that disturb greater than
or equal to one acre, and sites that disturb less than one acre that are part of a larger common plan of
development or sale for compliance with 15A NCAC 02H .1017 and the qualifying alternative programs that
apply within your jurisdiction, (c) Ensure that each project has an Operation and Maintenance Agreement that
complies with 15A NCAC 02H .1050(12), (d) Ensure that each project has an Operation and Maintenance Plan
that complies with 15A NCAC 02H .1050(13), (e) Ensure that each project has recorded deed restrictions and
protective covenants, that require the project to be maintained consistent with approved plans, and (f) Ensure
that each SCM and associated maintenance accesses be protected in a permanent recorded easement per 15A
NCAC 02H 1050 9) and 10).
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
30.
This permit requirement is fully met by the existing post -construction program, see references provided in Table 19
Permit
3.6.4: Inspections and Enforcement
Ref.
Measures to maintain inspection and enforcement authority, standards and procedures to: (a) Conduct post -
construction inspections prior to issuing a Certificate of Occupancy or a Temporary Certificate of Occupancy.
Alternatively, the project owner may provide a surety bond to guarantee compliance with the approved plan(s),
(b) Ensure that the project has been constructed in accordance with the approved plan(s), (c) Ensure annual
inspection of each permitted SCM to ensure compliance with the approved Operation and Maintenance
Agreement, (d) Ensure inspection of low density projects at least once during the permit term, and (e) Require
that inspections be conducted by a qualified professional.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
31.
This permit requirement is fully met by the existing post -construction program, see references provided in Table 19
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 30
Table 20: Post Construction Site Runoff Control BMPs
Permit
3.6.6: Fecal Coliform Reduction
Ref.
Measures to control, to the maximum extent practicable, sources of fecal coliform per 15A NCAC 02H
.1017(7). At a minimum, the program shall include: (a) A pet waste management component, which may be
achieved by revising an existing litter ordinance, and (b) An on -site domestic wastewater treatment system
component, if applicable, which may be coordinated with local county health department, to ensure proper
operation and maintenance of such systems.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
32.
Pet waste management
Develop a pet waste management
1. Develop a new pet
1. Permit year 1
1. Report if completed or
ordinance to reduce sources of fecal
waste management
not and current status
coliform
ordinance or revise an
—existing litter ordinance
2. Display ordinance
2. Permit years 2-5
2. Report the number of
information in Town
times information was in
newsletters and on Iocal
the newsletter and on the
PEG channel
PEG channel
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 31
PART 10: POLLUTION PREVENTION AND GOOD HOUSEKEEPING PROGRAMS
This SWMP provides a comprehensive pollution prevention and good housekeeping strategy for the
Town of Lewisville municipal facilities and operations. Pollution prevention and good housekeeping is
accomplished through the implementation of seven required programs, which collectively address the
ultimate goal of preventing or reducing pollutant runoff from municipal operations such as parks and
open space maintenance, fleet and building maintenance, new construction and land disturbances, and
municipal storm sewer system maintenance.
Pollution prevention and good housekeeping for municipal operations includes the following programs:
1. Municipal Facilities Operation and Maintenance Program
2. Spill Response Program
3. MS4 Operation and Maintenance Program
4. Municipal SCM Operation and Maintenance Program
5. Pesticide, Herbicide and Fertilizer Management Program
6. Vehicle and Equipment Maintenance Program
7. Pavement Management Program
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 32
The Town of Lewisville will manage, implement, and report the pollution prevention and good
housekeeping BMPs as specified in Table 21 below for each required program.
Table 21: Pollution Prevention and Good Housekeeping BMPs
Permit
3.7.1: Municipal Facilities Operation and Maintenance Program
Ref.
Measures to manage facilities that are owned and operated by the permittee and have the potential for generating polluted
stormwater runoff. The permittee shall maintain a current inventory of municipal facilities; perform facility inspections
and routine maintenance; establish specific frequencies, schedules, and standard documentation; provide staff training on
general stormwater awareness and imp ementing pollution prevention and good housekeeping ractices.
BIIP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Implementation
Annual Reporting
Metric
33.
Inventory of Municipal Facilities
Develop and maintain an up-to-date
1. Compile a list of
1. Pen -nit year 1
1. Number of facilities
inventory of municipal facilities with
existing Town -owned
inventoried; date list is
potential to generate polluted runoff,
facilities
complete
2. Determine which
2. Permit year 2
2. Number of facilities
facilities have the
inspected and if
potential to generate
classified as runoff
polluted runoff
generating or not; date
inspections complete
3. Determine which
3. Pen -nit year 2
3. Number of facilities
facilities require a
that require an industrial
NPDES industrial Permit
permit; number of
and which can apply for
facilities that can apply
a no exposure
for a no exposure
certification
certification
4. Determine which
4. Permit year 2
4. Number of facilities
facilities require a spill
that require a SPCC plan
prevention, control, and
countenance plan
(SPCC)
5. Update inventory as
5. Continually
5. Number of facilities
needed when facilities
added or removed
are added or closed
34.
Facility Inspections
Inspect Town facilities to confirm
1. Develop an SOP for
1. Once a facility has an
1. Number of industrial
good housekeeping practices are
Town facility
industrial facility that is
stormwater permitted
being followed, including vehicle and
inspections, including
permitted.
facilities, and if SOP
equipment cleaning, and to ensure
inspection schedule,
been developed
that the facility is in compliance with
report documentation,
any applicable Industrial Stonnwater
and tracking system
permits.
DRAFTNCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 33
Table 21: Pollution Prevention and Good Housekeeping BMPs
35. Staff Training
Provide staff training on general
1. See BMP #6
1. See BMP #6
1. See BMP #6
stormwater awareness and
implementing pollution prevention
and good housekeeping practices.
This can be completed by the Town
or through a cooperative agreement
with PTRC/Stonnwater SMART
Permit 3.7.2: Spill Response Program
Ref. Measures for facilities and operations that store and/or use materials that have the potential to contaminate stormwater
runoff if spilled. The permittee shall maintain written spill response procedures and train staff on spill response
rocedures.
BMP A
B
C
D
No. Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
36. Inventory of Municipal Facilities
Develop and maintain an up-to-date
1. See BMP #38
1. See BMP #38
1. See BMP #38
inventory of municipal facilities with
potential to generate polluted runoff
and facilities that require a SPCC
plan
37. Spill Response Procedures
Develop a SPCC plan for facilities
1. Develop a SPCC plan
1. Once a facility has
1. Number of facilities
that store and/or use materials that
for facilities that require
been determined to
that require a SPCC plan
have the potential to contaminate
it
require it
and if the plan has been
Stonnwater if spilled
developed
2. Train staff on SPCC
2. AnnualIy once SPCC
2. Training dates and
plan procedures
plan has been
number of attendees
implemented
3. Train new personnel
3. As needed
3. Training dates and
number of attendees
Permit 3.7.3: MS4 Operation and Maintenance Program
Ref. Measures to minimize pollutants in the stormwater collection system. The permittee shall provide operation and
maintenance staff training on stormwater awareness and pollution prevention, perform MS4 inspections, maintain the
collection system including catch basins and conveyances; and establish specific frequencies, schedules, and standard
documentation.
BMP A
B
C
D
No. Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
38. Staff Training
Provide operation and maintenance
1. See BMP #6
1. See BMP #6
1. See BMP #6
staff training on stormwater
awareness and pollution prevention.
This can be completed by the Town
or through a cooperative agreement
with PTRC/Stormwater SMART
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 34
Table 21: Pollution Prevention and Good Housekeeping BMWs
39.
MS4 Operation and Maintenance Program
Develop a MS4 O&M Program that
1. Develop MS4 O&M
1. Year 1
1. Report if completed or
includes how to perform an MS4
Program
not and current status
2. Perform regular
2. Years 2-5
2. Report if completed or
inspection and maintain collection
systems. The O&M Program shall
inspections according to
not
include an inspection schedule, report
the written Program
documentation, and tracking system.
Permit
3.7.4: Municipal SCM Operation and Maintenance Program
Ref.
Measures to manage municipally -owned, operated, and/or maintained structural SCMs that are installed for compliance
with the permittec's post -construction program. The pennittee 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
Implementation
Annual Reporting
Metric
40.
Inventory of Municipal SCMs
Develop and maintain an inventory of
1. Develop an inventory
1. Year 1
1. Report if completed or
all municipally owned SCMs
of Town -owned SCMs
not and current status
2. Update the SCM
2. Years 2-5
2. Report the number of
inventory as needed
SCMs added to the
inventory
41.
SCM O&M Program
Develop an SCM O&M Program,
1. Develop an O&M
1. Year 1
1. Report if completed or
including inspection and maintenance
Program
not and current status
2. Complete SCM
2. Years 2-5
2. Report the number of
instructions, inspection forms,
schedules, and documentation
inspections and
inspections completed
maintenance according
to the O&M Program
3. Perform repairs and
3. As required
3. Report the number of
maintenance as identified
SCMs repaired
during inspections
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 3 5
Permit
3.7.5: Pesticide, Herbicide and Fertilizer Management Program
Ref.
Measures to minimize water quality impacts from the use of landscape chemicals. The permittee shall provide routine
pollution prevention and chemical use, storage and handling training, and shall ensure compliance with permits and
avolicator certifications.
BMP
A
B
C
D
No.
Description of BMP
Measurable Goal(s)
Schedule for
Annual Reporting
Implementation
Metric
42.
Pesticide, Herbicide, Fertilizer Management Program
Currently, the Town of Lewisville
1. Develop a
1. Beginning the 15t year
1. Report if the Town
contracts this work out to 3' party
Management Plan,
after the Town stops
still contracts this work
licensed and certified contractors. If
including pollution
contracting this work to a
to a 31 party, and if not,
this changes, the Town will develop a
prevention and chemical
31 party
report if the Management
Management Program for municipal
use, storage and handling
Plan has been developed
staff that routinely use pesticides,
training, and pen -nit and
or not
herbicides, and/or fertilizer.
certification compliance
43.
Pesticide, Herbicide, Fertilizer Applicator Training
Currently, the Town of Lewisville
1. Develop or identify a
1. Beginning the I" year
1. Report if the Town
contracts this work out to 31 party
training program,
after the Town stops
still contracts this work
licensed and certified contractors. If
including pollution
contracting this work to a
to a 3`d party, and if not,
this changes, the Town will develop a
prevention and chemical
3`d party
report if the training has
training program for municipal staff
use, storage and handling
been developed or not
that routinely use pesticides,
training, and permit and
herbicides, and/or fertilizer,
certification compliance
2. Provide routine staff
2. Annually, beginning
2. Report if the Town
training in pollution
the 2"d year after the
still contracts this work
prevention and chemical
Town stops contracting
to a 31 party, and if not,
use, storage and handling
this work to a 3' party
report if the training has
training
been provided, the date,
and number of attendees
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 36
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 pennitting comply with those permit requirements, provide routine pollution prevention training to staff,
perforni routine inspections, and establish specific frequencies, schedules, and documentation.
BMP
No.
0
Description of BMP
B
Measurable Goal(s)
44. 1 Vehicle and Equipment Maintenance Program
Currently, the Town of Lewisville
contracts this work out to 3rd party
vendors. If this changes, the Town
will develop a Maintenance Program
for municipal vehicles and equipment
maintenance
1. Develop or identify a
maintenance program to
prevent contaminated
stormwater runoff from
vehicle and equipment
maintenance and
cleaning areas. Include
inspection schedules and
documentation
2. Provide routine staff
training in pollution
prevention that includes
vehicle maintenance and
cleaning areas
Fe
Schedule for
1. Beginning the I" year
after the Town stops
contracting this work to a
3rd party
2. Annually, beginning
the 2nd year after the
Town stops contracting
this work to a 3`d party
D
Annual Reporting
Metric
1. Report if the Town
still contracts this work
to a 3.d party, and if not,
report if the training has
been developed or not
2. Report if the Town
still contracts this work
to a 3' party, and if not,
report if the training has
been provided, the date,
and number of attendees
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 permittee shall implement measures to control litter, leaves, debris, particulate and fluid
pollutants associated with vehicles, and establish specific frequencies, schedules, and documentation.
BMP A
No. Description of BMP
45. 1 Pavement Management Program
Currently, the Town of Lewisville
contracts this work out to 3" party
vendors. If this changes, the Town
will develop a Pavement
Management Program for
municipally owned streets, roads, and
parking lots.
B
Measurable Goal(s)
1. Develop a Pavement
Management Program to
control litter, leaves,
debris, particulate and
fluid pollutants
associated with vehicles.
Include inspection
schedules and
documentation
C
Schedule for
nplementation
1. Beginning the l' year
after the Town stops
contracting this work to a
3rd party
D
Annual Reporting
Metric
1. Report if the Town
still contracts this work
to a 3rd party, and if not,
report if the training has
been developed or not
DRAFT NCS000494 SWMP
Town of Lewisville
January 1, 2021
Page 37