NCS000494_MS4 Annual Report (2023-24 FY)_20240829

Town of Lewisville
2023-2024 MS4 Annual Report
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Permit No. NCSoo0494
Permit Effective August 1, 2023
Permit Expires July 31, 2028

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Program Administration BMPs
1 Adequate Funding:Perform a fiscal analysis to ensure 1.Complete a fiscal gap analysis 1.Once, permit year 1 1.Adequate/inadequate Inadequate Budget increased by over 50%
adequate program funding and fully fund the stormwater for next year, including 21%
program and meet all permit requirements. increase for SW on-call
consulting services
2 Annual Self-Assessment: Evaluate the performance and 1. Prepare,conduct and document an 1.Annually Years 1-5 1.Yes/No Yes Evaluations completed
effectiveness of the program components at least annually. annual evaluation of the program quarterly
Results shall be used to modify the program components as components.
necessary to accomplish the intent of the Stormwater
Program.
3 Written Procedures: Develop and maintain written procedures 1. Develop all required written 1. Permit Year 1 1.Yes/No No Documents to be developed
for implementing the six minimum measures. Documents pro - ' by 6/30/25
include the MS4 O&M Program Plan, MS4 SCM O&M Program 2.Review written programs and update 2. Permit Years 2-5 2.Yes/No
Plan,and Illicit Discharge Detection and Elimination Program as needed
4 Permit Renewal Application:Submit a permit renewal 1. Draft SWMP applicable to the 1. Permit Year 5 1.Yes/No
application and Draft SWMP no later than 180 prior to permit proceeding 5 years following permit re-
expiration. issuance
2.Certify the stormwater permit renewal 2. Permit Year 5 2.Date of permit
application(Permit renewal application renewal application
form and Draft SWMP for the next 5-year submittal
permit cycle)and submit to NCDEQ at
least 180 days prior to permit expiration
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 1 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Public Education and Outreach BMPs
5 Educational Materials:The Town will develop and distribute 1. Develop and review existing materials 1.Once, permit year 1 1.Yes/No/NA Yes
educational materials to target audiences about stormwater and revise if needed
pollution, illegal dumping and discharge, litter and other target
6 Local Events:The Town will distribute information about 1. Distribute stormwater education 1.Annually for years 1-5 1. Event date,number of 3/10/24; 1 Nature Notebooks for Creek
stormwater runoff and pollution to target audiences at local materials at one public event annually. hours event was held Week @ Lewisville Library
events
7 Social and Mass Media Campaigns:The town will promote 1. Post educational materials through the 1.Quarterly,years 1-5 1.Total reach 175,565+ SW Hotline: Every 6 min;
stormwater education through social media, mass media,and Town's Public,Educational,and (impressions,ads, Fertilizer target ad: Every 6
newsletter campaigns.This can be completed in-house or Government(PEG)channel clicks,and posts) min;WQ Litter ad: Every day
through a cooperative agreement. 2. Include stormwater education articles 2.Quarterly,years 1-5 2. Number of 11,388 Nov 2023-Leaf Debris&
in the Town newsletter and distribute newsletters distributed "Can't Spell WATER without
through residents' preferred method "WE"article; Mar 2024-Creek
Week,Only Rain down the
Drain
3. Distribute information via social and 3.Quarterly,years 1-5 3. Number of times 6 Times FB:10/15/23-Clean Sweep;
mass media regarding target pollutants, information was 3/10/24 Yadkin River
including EPA target pollutants distributed Watershed History;3/11/24
Shoreline Garden Kit(posted 2
times);IG:10/15/23-Clean
Sweep;5/31/24 Water
Fountain Install
8 Stormwater Website: Maintain the Town website to provide 1. Maintain Town website 1. Permit years 1-5 1.Yes/No Yes
stormwater education information including ordinances,
construction&post-construction requirements, IDDE, program
9 Stormwater Hotline: Maintain and promote the Stormwater 1. Maintain stormwater hotline 1. Permit years 1-5 1.Yes/No Yes
Hotline so that citizens and businesses can call to report
pollution concerns and violations and to request stormwater
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 2 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Public Involvement and Participation BMPs
10 Stormwater Hotline: Maintain and promote the Stormwater 1. Maintain stormwater hotline 1. Permit years 1-5 1.Yes/No Yes
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 Department.
11 Stormwater Website: Maintain the Town website to provide 1. Maintain Town website 1. Permit years 1-5 1.Yes/No Yes
stormwater education information including ordinances,
construction&post-construction requirements, IDDE, program
information and FAQs.
12 Annual Litter Clean-up Events:Citizens and businesses will be 1. Identify public areas that need clean- 1.Annually for years 1-5 1. Number of areas 2 Road side swales&Jack
encouraged to participate in community litter clean-up events. ups. identified Warren Park
On-site education regarding how litter enters and pollutes local 2.Coordinate clean-ups of public areas 2.Annually for years 2-5 2.Date and number ;DWI FlaiTat EMTWVIIT
waterways will be provided. participants ':=imutaau.
13 Storm Drain Marker Program: Encourage volunteers to become 1. Identify priority areas that need storm 1.Once, permit year 2 1.Number of areas
involved by providing storm drain marking kits at no cost to drain marking identified
volunteer groups. 2.Create storm drain marking kits and 2.Once,permit year 3 2.Yes/No/Status
promote availability
3. Provide materials at no cost to 3.Continually,year 3-5 3.Number of kits ®.® 'iimot VAN IMAM(411id.Pvalii�
volunteer groups provided; Number of - -storm drains marked romirrIm.
14 Forsyth Creek Week:The Town will participate in Forsyth Creek Yes
Week so that volunteer opportunities are available to
residents,schools,and businesses within the Town's 2. Provide volunteer activities through 2.Annually,years 2-5 2.Number of a.=_ �., t .,� : .-�;��►. �..a� .:�-
jurisdiction. the Stormwater Department, participants Ens rrrra.�7 ms:�
Cooperative Extension or Stormwater . !ic�it!1woe awn i[o to/At
SMART collaborative
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 3 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Illicit Discharge Detection and Elimination BMPs
15 MS4 Map for non-curb and gutter areas: Continue development 1. Review existing map and determine 1.Once,permit year 1 1.Yes/No Yes Completed by Blue Stream
of MS4 map utilizing in-house staff and equipment, additional areas that need mapping Environmental
professional stormwater mapping firm,or the Piedmont Triad 2. Identify specific staff or partner to 2.Once, permit year 1 2.Yes/No Yes
Regional Council to develop a storm sewer map of the non- continue mapping throughout the Town's
curb and gutter areas within the Town's jurisdiction. Map will jurisdiction
not include DOT stormwater conveyances and major outfalls. 3. Update existing MS4 map with 3.Continually,years 2-4 3.Yes/No
additional map points
4.Complete map for all areas within the 4.Once,permit year 5 4.Yes/No
Town's jurisdiction
16 Update MS4 Map:Continually update the existing MS4 map as 1.Add new data points as new 1.Continually,years 1-5 1.Yes/No N/A No new developments to add
new development occurs. Utilize drawings and plans developments and neighborhoods are
17 Maintain IDDE Ordinance:The IDDE Ordinance charges the 1. Review ordinances and update if 1.Once, permit year 1 1.Yes/No Yes* Updates were needed,
Stormwater Administrator or designee with implementing the revision is required to maintain legal ordinances were rewritten,
IDDE program.The ordinance provides the legal authority to authority and new ordinances to be
prohibit,detect,and eliminate illicit connections and approved by Council within
discharges, illegal dumping and spills into the MS4. Update the next FY
ordinance if required
18 IDDE Plan: Develop and implement a written IDDE Plan to 1. Develop a written IDDE Plan 1.Once, permit year 1 1.Yes/No No Planned for 24/25 FY
detect and address illicit discharges, illegal dumping,and non- 2. Locate priority areas likely to have 2.Once, permit year 1 2.Yes/No No Review was completed,but no
stormwater discharges. illicit discharges priority areas were found
3.Conduct routine dry weather outfall 3.Annually,years 1-5 3.Yes/No Yes 144 Inspections completed;
inspections for 20%of the known outfalls 100%of mapped outfalls
4. Identify and eliminate illicit discharges 4.Annually,years 1-5 4. Number of reports 5;5;2 2 septic complaints&3
received,number of erosion control complaints.
investigations,and Septic were determined to be
number of illicit ID&E.C.complaints were
discharges detected turned over to the County
5. Evaluate IDDE plan and update as 5.Annually,years 2-5 5.Yes/No
necessary
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 4 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Illicit Discharge Detection and Elimination BMPs(continued)
19 Staff Training: Develop an IDDE training program for staff and 1. Identify or develop an IDDE Training 1.Once, permit year 1 1.Yes/No Yes Scheduled for 12/2024
contractors or provide training through a cooperative program
agreement.
# ©vide training to staff n€I tr ctc r •2 Annuall , - - 2 - 2-.#Umber-of attendees
that ® observeillicitdischarge7:= . . . ® . . . ® . . .
20 Stormwater Hotline: Maintain and promote the Stormwater 1. Maintain stormwater hotline 1. Permit years 1-5 1.Yes/No Yes
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 Department.
21 Stormwater Website: Maintain the Town website to provide 1. Maintain Town website 1. Permit years 1-5 1.Yes/No Yes
stormwater education information including ordinances,
construction&post-construction requirements, IDDE, program
information and FAQs.
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 5 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Construction Site Runoff Control BMPs
22 Construction site waste management control is erif r-W b Fars c urrt /Winston sate tfirou Ch 7=ArUc1e H Sec715-7.13TCh ter 19 Artiste I =
g �_ y1 � �__-� aaaaaaaaaaaaaaa = a =
23 Municipal Staff Training: Train municipal staff who receive 1.Train municipal staff on proper 1.Annually for years 1-5 1. Number of staff 1 Jon attended MDC&Southern
calls from the public on the protocols for referral and tracking handling of construction site runoff trained Sustainable SW Summit
of construction site runoff control complaints. control complaints trainings
24 Stormwater Hotline: Maintain and promote the Stormwater 1. Maintain stormwater hotline 1.Continually,years 1-5 1.Yes/No Yes
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 Department.
25 Stormwater Website: Maintain the Town website to provide 1. Maintain Town website 1. Permit years 1-5 1.Yes/No Yes
stormwater education information including ordinances,
construction&post-construction requirements, IDDE, program
information and FAQs.
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 6 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Post Construction Site Runoff Control BMPs
26 Standard Reporting: Implement standardized tracking, 1.Track number of low density and high 1.Continuously Years 1-5 1. Number of plan 1; 1 Low-Beroth Circle; High-
documentation, inspections and reporting mechanisms to density plan reviews performed. reviews performed for Great Wagon Reserve
compile appropriate data for the annual self assessment low density and high
process. Data shall be provided for each Post-Construction/ density.
Qualifying Alternative Program being implemented as listed in 2.Track number of low density and high 2.Continuously Years 1-5 2. Number of plan 1; 1 Low-Beroth Circle; High-
Tables 18 and 19. Low density shall be defined by Town density plans approved. approvals issued for low Great Wagon Reserve
ordinance density and high density.
3. Maintain a current inventory of low 3.Continuously Years 1-5 3. Number of projects 15 SCM Inventory in
density projects and constructed SCMs ComplianceGo; No Low
including SCM type or low density Density Inventory currently
acreage,location and last inspection
date.
4.Track number of annual SCM 4.Continuously Years 1-5 4. Number of SCM 0 3rd part inspections required
inspections performed. inspections. annually; Municipal
inspections only required
once per permit cycle
5.Track number of low density inspections 5. Once per permit term 5. Number of low density
performed once per permit term. projects inspected
6.Track number and type of enforcement 6.Continuously Years 1-5 6. Number of
actions taken. enforcement actions
issued.
27 This requirement is fully met by a Qualifying Alternative Program
28 This requirement is fully met by a Qualifying Alternative Program
29 This requirement is fully met by a Qualifying Alternative Program
30 This requirement is fully met by a Qualifying Alternative Program
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 7 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Post Construction Site Runoff Control BMPs(continued)
31 Pet Waste Management: Develop a pet waste management 1. Develop a new pet waste management 1.Once, permit year 1 1.Yes/No/Status In progress New ordinance in
ordinance to reduce sources of fecal coliform. ordinance or revise an existing litter development for 24/25 FY
ordinance
2. Display ordinance information on local 2. Continually,years 2-5 2. Number of days
Public, Educational, and Government ordinance information
(PEG)channel was posted
3. Print ordinance information in Town 3.Annually,years 2-5 3. Number of newsletters
newsletters distributed with
ordinance information
32 On-site wastewater system:This permit requirement is fully met by 15A NCAC 18A.1934, NCG.S. 130A-335(e)
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 8 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Pollution Prevention and Good Housekeeping BMPs
33 Inventory of Municipal Facilities: Maintain an up-to-date 1. Maintain a list of Town-owned facilities 1.Continually 1.Yes/No Yes In ComplianceGo
inventory of municipal facilities with potential to generate 2.Verify which Town-owned facilities 2.Once,permit year 1 2. Number that have the Yes None
polluted runoff. have the potential to generate polluted ability to generate runoff
runoff
3.Verify which Town-owned facilities 3.Once,permit year 1 3.Yes/No Yes None(although PW Building
require a NPDES Industrial Permit and previously received NEC,it is
which can apply for a no exposure no longer required)
certification
4.Verify that no Town-owned facilities 4.Once,permit year 1 4.Yes/No Yes None need SPCC
require a spill prevention,control,and
countermeasure plan(SPCC)
5. Update inventory as needed when 5.Continually 5. Number of facilities 0
facilities are added or closed added or removed
34 Municipal Facilities Operation and Maintenance Program: 1-.Develop MunicipatFacitity O&M 1.Permityear2 1.Yes/No!Partial a a a - = -
s
Develop a municipal facilities O&M Program that includes how program _
to perform facility inspections and routine maintenance; 2. Develop Municipal Facility O&M 2. Permit year 2 2.Yes/No/Partial; report
establish specific frequencies.The O&M Program shall include standard documentation number of staff trained ®'I
an inspection schedule, report documentation,and a tracking 3. Perform inspections of all facilities on 3.Annually,or per O&M 3.Number of facilities ®_
system. the municipally owned inventory list that specifications,permit inspected and number of '_
have the potential to generate polluted years 2-5 corrective actions noted __--
runoff, including those with a NPDES '
industrial permit and/or no exposure
exemption
4. Perform maintenance and repairs as 4.Continually,years 2-5 4.Yes/No/Status
determined in the O&M Program,and as z
determined based on corrective actions
noted during inspections. Document as
required in the O&M Program ==
35 Staff Training: Develop and implement a municipal facilities 1. Identify or develop a municipal 1.Once,permit year 2 1.Yes/No/Status
O&M training program for staff and contractors or provide facilities O&M training program
training through a cooperative agreement. 2. Provide O&M training to staff and/or 2.Annually,years 2-5 2.Number of people -
contractors trained
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 9 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Pollution Prevention and Good Housekeeping BMPs(continued)
36 Spill Response Plan: Maintain a Spill Response Program for all 1.Verify which Town-owned facilities 1.Once,year 1 1.Yes/No Yes
municipal facilities with potential to generate polluted runoff have the potential to generate polluted
runoff
Review Spill Response Program_ 2.Annually,years 2-5 2.Yes/No
37 Staff Training: Develop and implement a spill response training 1. Identify or develop a spill response ±.once, permit year 1 1. Yes/No r es scneautea for 12/2024
program for staff and contractors or provide training through a training program
cooperative agreement. 2. Provide spill response training to staff 2.Annually,years 2-5 2.Number of people
and contractors trained
38 MS4 Operation and Maintenance Program: Develop a MS4 1. uevewp I IJ4 Vael"I wru.Len program 1. rerrnn year i 1. reS/140/raniar ivu uOULILUeULS LU ue uevetopeu
O&M Program that includes how to perform MS4 inspections and standard documentation by 6/30/25
and how to maintain the collection system.The O&M Program 2. Perform inspections of the stormwater 2. Permit year 1 2.Yes/No/Partial Yes
shall include an inspection schedule, report documentation, collection system,with a goal of 25%
and tracking system. each year
3. Develop a maintenance plan to 3. Permit years 2-5 3.Number of licensed
complete needed repairs discovered applicators
during routine inspections
4. Identify if there are hotspots/areas 4.Annually,years 2-5 4.Yes/No
that need more frequent inspections and
maintenance
39 Staff Training: Develop and implement a MS4 O&M training 1. Identify or develop a MS4 O&M training 1.Once,permit year 2 1.Yes/No/Status
program for staff and contractors or provide training through a program
cooperative agreement. 2. Provide O&M Training to staff and 2.Annually,years 2-5 2.Number of people
contractors trained
40 Inventory of Municipal SCMs: Develop and maintain an 1. Develop an inventory of Town-owned 1.Once, permit year 1 1.Yes/No In ComplianceGo
inventory of all municipally owned SCMs SCMs
2. Update the SCM inventory 2.Annually,years 2-5 2.Total number of SCMs
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 10 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Pollution Prevention and Good Housekeeping BMPs(continued)
41 SCM O&M Program: Develop a SCM O&M Program that Develop an O&M written program '.Once. nermit year 1.Yes/No .10 To be completed by 6/30/25
includes SCM inspection and maintenance instructions, 2.Complete SCM inspections and 2.Annually,years 2-5 2.Number of
inspection frequencies, schedules,and documentation. maintenance according to the O&M inspections completed
Program
3. Perform repairs and maintenance as 3.Annually,years 2-5 3.Yes/No/Partial
identified during inspections
42 Pesticide, Herbicide, Fertilizer Management Program: 1. If the Town does not contract this 1. Beginning the 1st year 1. Contracted& Jocuments to be developed
Currently,the Town of Lewisville contracts this work out to 3rd work,develop a Management Plan, after the Town stops Contracted/Developed completed by by 6/30/25
party licensed and certified contractors. If this changes,the including pollution prevention and contracting this work to a Town staff
Town will develop a Management Program for municipal staff chemical use,storage and handling 3rd party
that routinely use pesticides, herbicides,and/or fertilizer. training,and permit and certification
compliance
43 Pesticide, Herbicide, Fertilizer Applicator Training:Currently, 1. Develop or identify a training program, 1. Beginning the 1st year 1. Contracted& Scheduled for 12/2024
the Town of Lewisville contracts this work out to 3rd party including pollution prevention and after the Town stops Contracted/Developed completed by
licensed and certified contractors. If this changes,the Town chemical use,storage and handling contracting this work to a Town staff
will develop a training program for municipal staff that training,and permit and certification 3rd party
routinely use pesticides, herbicides,and/or fertilizer.
2. Provide routine staff training in 2.Annually, beginning the 2.Date,and number of
pollution prevention and chemical use, 2nd year after the Town attendees
storage and handling training stops contracting this
work to a 3rd party
44 Vehicle and Equipment Maintenance Program:Currently,the 1. Develop or identify a maintenance 1. Beginning the 1st year 1. Report if the Town still Still
Town of Lewisville contracts this work out to 3rd party vendors. program to prevent contaminated after the Town stops contracts this work to a contracted
If this changes,the Town will develop a Maintenance Program stormwater runoff from vehicle and contracting this work to a 3rd party,and if not,
for municipal vehicles and equipment maintenance equipment maintenance and cleaning 3rd party report if the training has
areas. Include inspection schedules and been developed or not
documentation
2. Provide routine staff training in 2.Annually, beginning the 2. Report if the Town still N/A
pollution prevention that includes 2nd year after the Town contracts this work to a
vehicle maintenance and cleaning areas stops contracting this 3rd party,and if not,
work to a 3rd party report if the training has
been provided,the date,
and number of
attendees
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 11 of 12

Town of Lewisville Stormwater Management Plan BMPs
Schedule for
BMP# Description of BMP Measureable Goal Implementation Annual Reporting Metric Year 1 Metric Comments
Pollution Prevention and Good Housekeeping BMPs(con
45 Leaf and Litter collection: Provide street sweeping to control 1. Perform monthly street sweeping of 4 1. Monthly,years 1-5 1. Number of miles 48 4x 12 miles each time
littler leaves, debris, and particulate and dispose of material in miles of curb and gutter streets in the swept
an approved landfill downtown area
2. Perform seasonal street sweeping of 2.Annually,years 1-5 2. Number of miles 85.5 3x 28.5 miles each time
28.5 miles of curb and gutter streets in swept
residential areas
3. Identify hotspots that need more 3.Annually,years 1-5 3. Number of hotspots None;0.5
frequent sweeping and increase identified; Number of miles
sweeping as needed miles added to the street
sweeping program
46 Annual Litter Clean-up Events—Accomplished by Public - — _ __
tweetInvolvement
Additional Annual Report Comments:
Items in blue are required for this reporting period. Items in gray are not required for this reporting period.
Having stabilized after several years of administrative transition,the Town of Lewisville is putting forth considerable effort to both comply with and enforce stormwater regulation.We have instituted several
improvements over the past year and will address any and all first year shortcomings in year 2.
Thank you for your consideration and help.
Annual Report Completed by: Jon Hanna, Public Works Director
Date Completed: August 29,2014
Permit Year 1 Annual Report:2023-2024 NPDES MS4 Permit No. NCS000494 Page 12 of 12