NCS000245_MS4 Annual Report (2023-24 FY)_20241030

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NPDES MS4 Permit
Annual Report
October 1 , 2023 - September 30, 2024
Permit No. NCS000245
Prepared under the direction of S. Wayne Miles, PE, Stormwater Program Manager
% % 0 Raleigh
raleigh %.�/lg
l ,�' Stormwater

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Table of Contents
Certification... 4
Introduction... 5
Section A: Program Implementation 6
A.1 MS4 Program Management 6
A.2 Program Funding 6
A.3 Best Management Practices 8
Section B: Public Education and Outreach 11
B.1 Program Narrative 11
B.2 Best Management Practices 11
B.3 Program Assessment 25
Section C: Public Involvement and Participation 27
C.1 Program Narrative 27
C.2 Best Management Practices 27
C.3 Program Assessment 29
Section D: Illicit Discharge Detection and Elimination 31
D.1 Program Narrative 31
D.2 Best Management Practices 31
D.3 Program Assessment 55
Section E: Construction Site Runoff Controls 57
E.1 Program Narrative 57
E.2 Best Management Practices 57
E.3 Program Assessment 61
Section F: Post-Construction Site Runoff Controls 62
F.1 Program Narrative 62
F.2 Best Management Practices 62
F.3 Program Elements 65
F.4 Program Assessment 68
Section G: Pollution Prevention and Good Housekeeping for Municipal Operations 69
G.1 Program Narrative 69
G.2 Best Management Practices 69
G.3 Program Assessment 78
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Section H: Program to Monitor and Evaluate Stormwater Discharges to Municipal Systems
79
H.1 Program Narrative 79
H.2 Best Management Practices 79
H.3 Program Assessment 80
Section I: Water Quality Assessment and Monitoring 81
I.1 Program Narrative 81
I.2 Best Management Practices 81
Section I.3: Program Assessment 82
Section J: Total Maximum Daily Loads 84
J.1 Program Narrative 84
J.2 Best Management Practices 84
J.3 Program Assessment 89
Section K: Annual Assessment and Annual Summary 90
K.1 Assessment 90
K.2 Program Improvements 90
K.3 2023-2024 Program Initiatives 90
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Certification
I 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.
lAr/11(--
S. Wayne Miles, PE
Stormwater Program Manager
City of Raleigh
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Introduction
This report describes programs and activities undertaken during the period of October 1, 2023, through
September 30, 2024, as required by the City of Raleigh's permit to discharge stormwater under National
Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) Permit
Number NCS000245. The annual reporting requirements are described in Part IV. B of the permit. These
requirements are included in Table 1 with the associated annual report sections. Annual reporting
provides a summary of the activities completed, as identified in the City's Stormwater Management Plan
(SWMP), and the annual report content aligns with the content of the City SWMP.
Table 1. Annual Report Components
Annual Report Component Report Section(s)
a. A detailed description of the status of implementation of the Stormwater A.1, A.3, B.1, B.2,
Management Plan. This will include information on development and C.1, C.2, D.1, D.2,
implementation of each major component of the Stormwater E.1, E.2, F.1 F.2,
Management Plan for the past year and schedules and plans for the G.1, G.2, H.1, H.2,
year following each report. 1.1, 1.2, J.1, J.2, K.3
b. Description and justification of any proposed changes to the Stormwater
Management Plan. This will include descriptions and supporting
information for the proposed changes and how these changes will K.2
impact the Stormwater Management Plan (results, effectiveness,
implementation schedule, etc.).
c. Any necessary changes to programs or practices for assessment of B.3, C.3, D.3, E.3,
management measures implemented through the Stormwater F.3, G.3, H.3, 1.3,
Management Plan. J.3, K.1
A.3, B.2, B.3, C.2,
d. A summary of data accumulated as part of the Stormwater Management C.3, D.2, D.3, E.2,
Plan throughout the year along with an assessment of what the data E.3, F.2, F.3, G.2,
indicates. G.3, H.2, H.3, 1.2,
1.3, J.2, J.3, K.2
e. An assessment of compliance with the permit, information on the
establishment of appropriate legal authorities, inspections, and K.1, K.2, K.3
enforcement actions.
f. Discussion of program funding. A.2
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Section A: Program Implementation
The City of Raleigh implements, manages, and oversees all aspects of its SWMP to control to the maximum extent practical the discharge of
pollutants associated with stormwater runoff from its MS4.
A.1 MS4 Program Management
The City of Raleigh is committed to maintaining compliance with its NPDES MS4 permit and protecting the City's stormwater quality through
the implementation of a comprehensive stormwater management program. Stormwater Management Division staff regularly coordinate across
internal work groups and City departments to effectively implement programmatic requirements and City-wide initiatives that are outlined in our
Stormwater Management Plan (SWMP). During this last year, the SWMP was reviewed, and minor updates were completed. These changes
included general program updates limited to FY 24-27 schedules.
Currently, the total number of Full Time Employees (FTEs) associated with MS4 permit program implementation for FY2024 is 146, with 84
FTEs within Raleigh Stormwater in the Engineering Services Department and 62 FTEs within Stormwater Maintenance in the Raleigh
Department of Transportation Field Services group. Implementation of each MS4 program component is outlined in Subsection 1 of Sections B
through J.
A.2 Program Funding
Raleigh Stormwater receives capital and operating funds appropriated by the City Council that are dedicated to implementing and managing
the provisions of the SWMP and complying with MS4 permit requirements. Program elements are primarily funded by the City stormwater utility
fee. Additional sources of funding include plan review and permit application fees. The City general fund and revenue from the Raleigh Water
utility fee also may be utilized for pollution prevention and good housekeeping activities by owning departments. Further fiscal analysis and
investigation of funding options (such as a general fund allocation or a change to the stormwater fee) are conducted annually to maintain
adequate funds to meet program needs.
The allocated budget for the City Stormwater Program in FY2023-2024 (fiscal year from July 1, 2023, through June 30, 2024)was sufficient to
meet program needs and implement the requirements of the MS4 permit. The total Stormwater Management budget for FY2023-2024 was
$36,441,360, and Capital Improvement Program total expenditures for the City's Stormwater Program for FY2023-2024 were $8,785,799 with
an adopted Capital Improvement Program budget of$13,128,000 (see Table A-1).
The City increased the stormwater utility fee by 4%for FY2024-2025 (fiscal year from July 1, 2024, through June 30, 2025) based on the
determined need for ongoing operational and CIP expenditures. The total budget for the City's Stormwater Program for FY2024-2025 is
$39,261,103. The budget funds annual operations and the Capital Improvement Program. The adopted Capital Improvement Program budget
for the City's Stormwater Program for FY2024-2025 is $13,875,000.
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Table A-1: FY2024 Stormwater Program Capital Improvement Program Budget
Stormwater Program Category FY2023-2024 CIP Budget
Neighborhood Drainage System Improvements $1,500,000
General Drainage Infrastructure $5,788,000
Asset and Watershed $2,000,000
Water Quality/Stream Restoration/GSI Projects $1,560,000
Flood Hazard Mitigation and Flood Early Warning $960,000
City SCMs and Dams Program $1,320,000
Total I $13,128,000
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A.3 Best Management Practices
Table A-2 includes a brief description of the Program Implementation best management practices required by the MS4 permit, the planned
actions for the current and future fiscal years as described in the SWMP, the annual reporting metrics identified in the SWMP, and the actual
metrics for actions completed in FY2023-2024.
Table A-2: Program Implementation Metrics and Results
Program Element 202 FY202 Reporting Metric(s) 1 023-2024 Results
Part II Section A Complete annual review Complete annual review Report type of assessment Voluntary self-audit
The program will be with DEQ or conduct a with DEQ or conduct a completed completed June 2024; see
subject to a compliance voluntary assessment. voluntary assessment. Section K
audit or a voluntary
assessment process on an
annual basis
Part II Section A.1 Review regulations, Review or evaluate Report modifications to the Updated Stormwater
The permittee will maintain ordinances, policies, and regulations, ordinances, regulations, ordinances, Design Manual and
adequate legal procedures and update, if policies, and procedures policies, and procedures incorporated in UDO
mechanism, such as necessary. annually and update, as approved by Council on
regulations, ordinances, needed. September 3, 2024,
policies, and procedures to Effective November 2,
implement all provisions of 2024
the SWMP.
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Program Element FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section A.2 Evaluate program Evaluate program Program evaluation Yes
The permittee will effectiveness with effectiveness annually with completed (Y/N)
implement provisions of responsible parties, as responsible parties Annual reporting of Sections B-3, C-3, D-3, E-
the SWMP and evaluate described in each section annually, as described in program effectiveness is 3, F-3, G-3, H-3, I-3, &J-3.
performance and and summarized in Section each section and described in each annual
effectiveness of the 13 of the SWMP. summarized in Section 13
program components. of the SWMP. report section
Part II Section A.3 Review the SWMP at least Review the SWMP at least Report modifications to the The SWMP was updated
The permittee is required once annually and update, once annually and update, SWMP and make available on July 24, 2024.
to keep the SWMP up to as needed. as needed. to DEQ upon request
date with annual updates if Updates included general
any changes are program updates limited to
warranted. FY 25-27 schedules.
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Program Element FY2024 FY20. Reporting Metric(s) 2023-2024 Results
Part II Section A.4 Maintain written Maintain written Written procedures are N/A, written procedures
The permittee shall procedures as documented procedures as documented available to DEQ upon are available to NCDEQ
maintain, and make in Sections 4 through 12 of in Sections 4 through 12 of request upon request.
available to the Division the SWMP. the SWMP.
upon request, written
procedures for
implementing the six
minimum control
measures. Written
procedures shall identify
specific action steps,
schedules, resources, and
responsibilities for
implementing the six
minimum measures.
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Section B: Public Education and Outreach
B.1 Program Narrative
The City uses several methods and media to educate the public on the causes and impacts of stormwater pollution, including utility bill inserts,
newsletters, webpages, articles, social media, workshop presentations, and classroom education events. In addition to these materials and
programs developed by the City, the City participates in the Clean Water Education Partnership (CWEP), which provides videos, online
resources, and printed materials to its members and produces a large multi-media campaign that features television public service
announcements, radio public service announcements, and a stormwater informational website, www.nc-cleanwater.org. The CWEP annual
report for this reporting period has been submitted directly to DEQ by the Central Pines Regional Council on behalf of the City.
B.2 Best Management Practices
Table B-1 includes a brief description of the Public Education and Outreach best management practices required by the MS4 permit, the
planned actions for the current and future fiscal years as described in the SWMP, the annual reporting metrics identified in the SWMP, and the
actual metrics for actions completed in FY2023-2024.
Table B-1: Public Education and Outreach Program Metrics and Results
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section B.2 (a) Review annually the target Review annually the target Report target pollutants See Table B-2
Describe target pollutants pollutants and sources in the pollutants and sources in and the associated
and sources Education, Outreach, and the Education, Outreach, sources
Public Involvement Plan and and Public Involvement Plan
update, as needed. and update, as needed.
Implement the public education Implement the public
and outreach program utilizing education and outreach
the Education, Outreach, and program utilizing the
Public Involvement Plan and Education, Outreach, and Report reason each See Table B-2
the Communications Plan. Public Involvement and the target pollutant was
Communications Plan. selected
Evaluate the program
effectiveness annually and Evaluate the program
notify the Water Quality effectiveness annually and
Manager of plan and/or notify the Water Quality
program modifications. Manager of plan and/or
program modifications.
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section B.2 (b) Review and update target Review annually the target Report identified target See Table B-2
Describe target audiences audiences associated with audiences associated with audiences likely to have
each pollutant and source in each pollutant and source in significant stormwater
the Public Education and the Education, Outreach, impacts for each target
Engagement Plan. and Public Involvement Plan pollutant.
and update, as needed.
Implement the public education Report reason each See Table B-2
and outreach program utilizing Implement the public target audience was
the Public Education and education and outreach selected
Engagement Plan and the program utilizing the
Communications Plan. Education, Outreach, and
Public Involvement Plan and
Evaluate the program the Communications Plan.
effectiveness annually and
notify the Water Quality Evaluate the program
Manager of plan and/or effectiveness annually and
program modifications. notify the Water Quality
Manager of plan and/or
program modifications.
Part II Section B.2 (c) Maintain and update the Maintain and update the Report number of hits 344,390 page views for
Informational website stormwater program webpage. stormwater program to Stormwater all Stormwater
webpage. Management main site Management
Evaluate program and SWMP webpage webpages; 464 page
effectiveness and notify the Evaluate program views for the SWMP
Water Quality Manager of effectiveness annually and webpage
program modifications. notify the Water Quality
Manager of program
modifications.
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section B.2 (d) Distribute public education Distribute public education Report number of See Table B-3
Distribute public education materials, as described in the materials, as described in educational materials
materials to identified user Education, Outreach, and the Education, Outreach, distributed by type Refer to CWEP annual
groups Public Involvement Plan. and Public Involvement report Annual Reports
Plan. Provide CWEP annual —Clean Water
Participate in CWEP activities report Education Partnership
and events. Participate in CWEP (CWEP) nc-
activities and events. cleanwater.com
Evaluate the program
effectiveness annually and Evaluate the program
notify the Water Quality effectiveness annually and
Manager of plan and/or notify the Water Quality
program modifications. Manager of plan and/or
program modifications.
Part II Section B.2 (e) Maintain the stormwater Maintain the stormwater Report number of calls Total calls:
Promote and maintain administration helpline to administration helpline to handled by the Drainage: 228
hotline(s)or helpline(s) receive public complaints. share information and stormwater Utility fee: 77
receive public complaints. administration helpline Plan review: 197
Evaluate the program by type of call Volunteer: 20
effectiveness annually and Evaluate the program Illicit discharge: 66
notify the Water Quality effectiveness annually and Active
Manager of plan and/or notify the Water Quality construction: 123
program modifications. Manager of plan and/or Capital projects: 26
program modifications. Utility billing: 74
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section B.2 (f) Review annually the Review annually the Report City events and See Table B-3
Implement a public Education, Outreach, and Education, Outreach, and number of handouts
education and outreach Public Involvement Plan and Public Involvement Plan and distributed at each
program update, as needed. update, as needed. event
Report City in-school See Table B-4
Review annually the Review annually the events and number of
Communications Plan and Communications Plan and participants
update, as needed. update, as needed.
Implement the public education Implement the public
and outreach program utilizing education and outreach
the Education, Outreach, and program utilizing the
Public Involvement Plan and Education, Outreach, and
the Communications Plan. Public Involvement Plan and
the Communications Plan.
Evaluate the program
effectiveness annually and Evaluate the program
notify the Water Quality effectiveness annually and
Manager of plan and/or notify the Water Quality
program modifications. Manager of plan and/or
program modifications
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Table B-2: Target pollutants, associated sources, target audiences, and justifications
Target Target Pollutant Pollutant Sources Target Audiences Target Audiences
Pollutant Justification Justification
Sediment Increases MS4 maintenance, Illicit discharges, construction Construction contractors, Audiences conduct, oversee,
degrades stream and lake sites, streambank erosion developers, municipal regulate, engage in, and/or
biological abundance and (resulting from increasing government, property observe activities at pollutant
diversity, reduces lake depth imperviousness in the owners/residents, general sources
and storage volume, watershed) public
aesthetically unattractive
Nutrients Promotes growth of algae in Illicit discharges, sewage Landscape maintenance/lawn Audiences store and apply
(nitrogen and lakes and streams which can overflows and leaks, clippings care companies, property fertilizer, own, or maintain
phosphorus) degrade biological abundance and waste from landscape owners/residents, municipal sewer plumbing/pipes,
and diversity, toxic to aquatic maintenance/lawn care, government, general public engage in, and/or observe
species and humans, impedes pet/animal waste, application activities at pollutant sources
recreation, aesthetically and improper storage of
unattractive fertilizers, sediment
adsorption, atmospheric
deposition
Trash Increases MS4 maintenance, Illicit discharges, construction Construction contractors, Audiences generate and store
aesthetically unattractive sites, litter, dumping, municipal government, trash or engage in and/or
restaurants, food trucks property owners/residents, observe activities at pollutant
restaurant and food truck sources
owners/operators, general
public
Metals Degrades stream and lake Illicit discharges; vehicle Construction contractors, Audiences engage in activities
biological abundance and storage and maintenance; painting contractors, property that store/handle materials
diversity construction sites; paints and owners/residents, municipal and generate wastes that
finishes, material, and government, vehicle repair contain metals and/or observe
chemical storage shops activities at pollutant sources
Bacteria Harms public and pet health Illicit discharges, sewage Property owners/residents, Property owners/residents
overflows and leaks, failing municipal government, responsible for septic systems
septic systems general public and private sewer plumbing
and connections, municipal
government responsible for
most sanitary sewers, general
public observes activities at
pollutant sources
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Target Target Pollutant Pollutant Sources Target Audiences Target Audiences
Pollutant Justification Justification
Oil &grease Degrades stream and lake Illicit discharges, vehicle Vehicle repair shops, Audiences conduct, oversee,
biological abundance and storage and maintenance, restaurant and food truck engage in, and/or observe
diversity restaurants, food trucks owners/operators, municipal activities at pollutant sources
government, general public
Table B-3: Public Education and Outreach Program event and material distribution log
Date Description of Event/Activity Attendee & Material Types of Educational Materials
Count
(# materials equals
#attendees)
10/04/2023 Worthdale Project Public Meeting 12 Volunteer Programs, CWEP, Drainage
Assistance, Flood Risk, Sediment Pollution,
Protect Streams, Rain Barrel, R-3 Rack Card,
Stormwater Fee, Stream Stabilization, Rocky-
Walnut Watershed Study Brochures
10/04/2023 Site Development Infrastructure Design Project 30
10/05/2023 October SMAC Meeting 30
10/10/2023 NC Landscaping Board Email 100+
10/16/2023 Imagine a Day Without Water Campaign 5000+ Promoted R3 and Utility Billing Assistance
through email, social media, and the website
10/21/2023 Volunteer Stream Monitoring Workshop 16
10/22/2023 Girl Scout Troop Event 16
10/25/2023 Rose Lane Pop-Up Meeting 34
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Date Description of Event/Activity Attendee & Material Types of Educational Materials
Count
(# materials equals
#attendees)
10/27/2023 Transportation and Treats Event 75
10/31/2023 Stormwater(billing notification letter) Fee 68 Fee explanation brochure
Brochures
11/02/2023 November SMAC Meeting
11/06/2023 October IDDE Calls 9
11/07/2023 GIS Day 100 GIS Tools and General Stormwater Informational
Materials
11/07/2023 AWRA National Conference Presentation: GSI in 30
Raleigh: Leading by Example
11/072023 AWRA National Conference Technical Tour: 30
Innovative Stormwater Tour
11/06/2023 AWRA National Conference Presentation: 15
Advancing Asset Management Approaches for
Natural Infrastructure
11/06/2023 Stormwater Week Ahead GovDelivery 5000+ Floodplain awareness, GIS tools, Capture It Art
Program, National STEM Day through email
11/08/2023 National STEM Day 5000+ National STEM Day promotion through email,
including floodplain awareness, virtual classroom
resources, R3 Program, Capture It Contest
11/09/2023 Glenwood Creston Public Meeting 16
11/13/2023 - One Water Summit— presentations made by 1000+
11/16/2023 Raleigh Stormwater staff
11/30/2023 American Society of Civil Engineers Eastern 60
Branch — presentation made by Raleigh
Stormwater staff
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Date Description of Event/Activity Attendee & Material Types of Educational Materials
Count
(# materials equals
#attendees)
12/04/2024 November IDDE Calls 6
12/07/2023 Raleigh Stormwater University— Ethics in 39
Municipal Government
12/07/2023 December SMAC Meeting 26
12/07/2023 November IDDE Calls 6
12/09/2023 Smoky Hollow Park Meeting (City of Raleigh 65
PRCR)
12/18/2023 Stormwater Smart Winter Newsletter 5000+ Capture It Contest, R3, and Homeowner
Stormwater Pipe Maintenance newsletter
materials
01/04/2024 New Year Email 5000+
1/4/2024 January SMAC Meeting 26
1/5/2024 December IDDE Calls
1/27/2024 Leesville/Strickland Parks Public Information 15 General Stormwater Informational Brochures
Meeting
1/30/2024 Stormwater(Billing Notification Letter) Fee
Brochures
2/1/2024 January IDDE Calls 3
2/8/2024 February SMAC Meeting 32
2/15/2024 NCSU ETM Meet& Greet 40 General Stormwater Informational Brochures
2/16/2024 Stormwater(Billing Notification Letter) Fee 6 Fee Brochures
Brochures
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Date Description of Event/Activity Attendee & Material Types of Educational Materials
Count
(# materials equals
#attendees)
2/21/2024 Open House: Stormwater& Sustainable Features 50 Green Stormwater Infrastructure fact sheets
in Affordable Housing
2/24/2024 GSI to Mitigate UHIs Public Meeting 7 Presented project sites, plans, and anticipated
timeline for project. Received public feedback on
plans and planting/tree selection.
2/26/2024 Stormwater Association of North Carolina 30
(SWANC)
2/27/2024 Stormwater Smart Spring Newsletter 5000+
2/28/2024 Dix Park Summit 250 General Stormwater Informational Brochures
2/29/2024 ASCE Legislative Fly-In 10 Briefed legislative offices on the importance of
Dam safety, WRDA Act, Rose Lane, and E Lane
Street
3/2/2024 Smoky Hollow Park Public Meeting (City of 13 Green Stormwater Infrastructure
Raleigh PRCR)
3/7/2024 February IDDE Calls 10
3/7/2024 March SMAC 28
3/12/2024 Rain Garden Rain Barrel Presentation 8
3/12/2024 Pigeon House Branch Watershed Study Public 31 Watershed study, Flood Risk, Water Quality,
Meeting Drainage Assistance, Volunteering Brochures
3/16/2024 Rain Garden Rain Barrel Presentation 9
3/18/2024 Presentation to Five Points CAC 20 Drainage Assistance, R3, Buffer Builder Bag,
Volunteering Brochures
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Date Description of Event/Activity Attendee & Material Types of Educational Materials
Count
(# materials equals
#attendees)
3/23/2024 Stream Cleanup 29
3/25/2024 Stormwater(Billing Notification Letter) Fee 6
Brochures
4/2/2024 April SMAC Meeting 24
4/2/2024 March IDDE Calls 4
4/4/2024 May YSC Car Washing and Maintenance Article 196,000
4/8/2024 Operations and Maintenance of Stormwater 300
Control Measures Conference
4/10/2024 Stormwater(Billing Notification Letter) Fee 2
Brochures
4/10/2024 NC State Earth Fair 103 General Stormwater Informational Brochures
4/19/2024 Raleigh Earth Day Event General Stormwater Informational Brochures
4/20/2024 Volunteer Stream Monitoring Workshop 4
4/22/2024 Duke Energy Cleanup, Invasive Plant Removal 65
and Mulching
4/25/2024 WPU Environmental Analysis Class 8
4/27/2024 Capture It Art Gallery Reception 80 Water Pollution Brochures
5/3/2024 May SMAC Meeting 26
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Date Description of Event/Activity Attendee & Material Types of Educational Materials
Count
(# materials equals
#attendees)
5/3/2024 April IDDE Calls 6
5/3/2024 Stormwater(Billing Notification Letter) Fee 1
Brochures
5/6/2024 Stormwater(Billing Notification Letter) Fee 9
Brochures
5/7/2024 Smart Cities Conference Workshop (FEWS 100
Presentation
5/17/2024 Stormwater(Billing Notification Letter) Fee 1 Fee Brochures
Brochures
5/17/2024 Millbrook High School Sustainable Academy Field 50
Trip to MBX Stream Repair Project
5/23/2024 Stormwater Management Live Interview
5/23/2024 Biltmore Hills Tennis Bond Project Open House 15 General Stormwater Informational Brochures
5/29/2024 Saybrook Study Public Meeting 16 General Stormwater Informational Brochures
5/30/2024 Stormwater(Billing Notification Letter) Fee 4 Fee Brochures
Brochures
5/30/2024 UHI GSI Project Pup-up Outreach Event 5 Green Stormwater Infrastructure
6/3/2024 Stormwater Smart Summer Newsletter 5300 Newsletter covered hurricane season, preventing
pollution in parks, buffer builder bag program,
and interview with JC Arboretum
6/5/2024 May IDDE calls 2
6/15/2024 Walnut Creek Watershed Learning Network 10 Enviroscape Demo, R3
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Date Description of Event/Activity Attendee & Material Types of Educational Materials
Count
(# materials equals
#attendees)
6/25/2024 Parks Volunteer Summer Camp 14
7/10/2024 Stormwater(Billing notification letter) Fee 1 Fee Brochures
Brochures
7/10/2024 June IDDE calls 4
7/11/2024 SPHO Board Meeting and Presentation of 20 R3
Rainwater Rewards Program
7/15/2024 Stormwater(Billing notification letter) Fee 1 Fee Brochures
Brochures
7/31/2024 Parks Summer Intern Career Presentation 16
8/2/2024 July IDDE calls 2
8/9/2024 Wake County Water Partnership Meeting 20
8/17/2024 Mud Day 94 Lego watershed model, R3, Volunteering, CWEP
Brochures
8/17/2024 Emergency Preparedness with Raleigh CERT 30 Flood Risk, Flood Insurance, Stream
Stabilization
9/7/2024 Engage Raleigh: Community and Neighborhood 52 R3, Volunteering, Stream Stabilization, CWEP,
Expo Rain Barrel Brochures
9/10/2024 National Night Out: North Hills 30 Tabled alongside Parks and Rec and discussed
GSI with event participants. Topics included
Flood Risk, Stream Stabilization, R3,
Volunteering Brochures, Rain Barrels
9/13/2024 NCSU ETM Meet& Greet 30 Public Participation/Volunteer/Internships, Water
Quality Monitoring
Rev. 8.1.2022 22

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Date Description of Event/Activity Attendee & Material Types of Educational Materials
Count
(# materials equals
#attendees)
9/17/2024 NC APWA Stormwater Conference— 250
presentations by Raleigh Stormwater staff
9/19/2024 Raleigh Neighborhood College 25
9/23/2024 Upper Durant Wetland Public Meeting 40 General Stormwater Informational Brochures
9/27/2024 Stormwater Design Manual Update for Current 15
Planning
9/28/2024 Fall Stream Cleanup 24
9/30/2024 Stormwater Regulations Update for Home Builders 44
9/30/2024 Stormwater Design Manual Update for Planning 20
Project Managers
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Table B-4: Public Education and Outreach school events
Date #Students Event Location Event Description Virtual/In-person
Attended
10/19/2023 130 Brentwood Elem. School In-person
10/27/2023 164 Dillard Dr. Middle School In-person
10/31/2023 309 Martin Middle School In-person
11/3/2023 20 Wake Technical Community 2-hour presentation describing In-person
College stormwater, how development
impacts stormwater, site
considerations, erosion control,
stormwater quality and quantity,
green stormwater infrastructure
and the permitting process.
11/8/2023 90 Joyner Elementary School In-person
11/30/2023 50 Bugg Magnet Elementary Site visit with students in advance In-person
School of a STEM week activity. We
covered what stormwater is, what
a watershed is, natural stream
restoration, and GSI.
12/4/2023 130 Bugg magnet Elementary Staff provided water quality In-person
School presentations to multiple grades
4/10/2024 103 NC State Earth Fair Hosted a table at the Earth Fair In-person
event to give out general
information about the different
programs Stormwater offers
throughout the city
4/12/2024 100 Fuller Magnet Elementary Presented to a class of 2nd & 3rd In-person
School grade students on pollutants
using the Enviroscape table.
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Date #Students Event Location Event Description Virtual/In-person
Attended
4/28/2024 8 William Peace University Presented information related to In-person
Environmental Analysis Class Raleigh's water quality monitoring
&assessment program
4/26/2024 275 Millbrook Elementary School Presented information about In-person
stormwater engineering, the
water cycle, and pollutants to 3rd,
4th, and 5th graders.
9/25/2024 77 Exploris Middle School Shared an Enviroscape Demo In-person
with 8th grade students to
highlight how stormwater runoff
carries pollutants into storm
drains and water ways.
B.3 Program Assessment
Raleigh Stormwater staff have maintained successful efforts to provide education and outreach to the community, while also expanding in-
person and virtual resources to improve accessibility and inclusivity throughout the city. As part of the annual review of the Stormwater
Education Plan (developed in the 2022-2023 reporting year), Stormwater staff created an implementation schedule for tailored educational
offerings to address target pollutants and audiences to promote synergy across teams and track fulfillment of compliance activities. New
outreach materials developed and disseminated during this reporting period include an instructional video for managing hazardous spills and a
flyer targeting food truck operators on proper grease disposal.
City staff use a variety of means to educate the public on water quality and stormwater impacts, including but not limited to tabling at outreach
events, SMAC meetings, social media posts, the stormwater helpline, newsletters, and school visits. Outreach materials such as brochures are
available in both English and Spanish as well as television, radio, and newspaper outlets via an ongoing partnership with CWEP. The annual
Stormwater Capture It! Art contest, a program that invites students to submit artwork and short videos about stormwater pollution, saw an
increase in entries from last reporting period.The program also expanded this year to include a month-long exhibition at Pullen Art Center to
increase education and outreach exposure. Stormwater staff are also researching new educational tools to bring to outreach events and school
visits, as well as expanding virtual resources such as lesson plans and Story Maps for more dynamic and accessible educator tools. Providing
tools and resources for educator use can supplement staff efforts to educate students.
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NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
In-person school visits decreased from 22 visits from the previous reporting year to 12 visits in this reporting year. This decrease in school
engagement was due to a seven-month vacancy in the Environmental Educator staff position beginning December 31, 2023. During the
vacancy, education and outreach were conducted by other City staff and through CWEP. To help prevent impacts from staffing vacancies in
the future, significant time and effort went into reclassifying the position to create shared coverage between education, outreach, and public
participation programs. The reclassified position was filled on July 29, 2024.
The City's Illicit Discharge Detection and Elimination (IDDE)training module and Pollution Prevention and Good Housekeeping (PPGH) training
modules have recently changed platforms from iLearn to SuccessFactors. Stormwater staff have worked closely with Raleigh's Human
Resources & Information Technology staff to promote continued deployment of these trainings throughout the organization.
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Section C: Public Involvement and Participation
C.1 Program Narrative
The City provides opportunities for public involvement and participation in program development and implementation through community
volunteer programs and mechanisms for public reporting and comment. The City's SWMP is noticed and presented at a public hearing for
comment by the members of the public at least once per permit cycle. As-needed changes to City stormwater regulations and the annual
budget for the Stormwater Management Division are also noticed and presented at public hearings for comment by the public. As a means of
obtaining regular public input on policy and project matters, City Council established the Stormwater Management Advisory Commission
(SMAC), which generally meets on a monthly basis to review stormwater management issues and provide guidance and recommendations to
City Council. Comments from the general public also are received during meetings of this commission.
C.2 Best Management Practices
Table C-1 includes a brief description of the Public Involvement and Participation best management practices required by the MS4 permit, the
planned actions for the current and future fiscal years as described in the SWMP, the annual reporting metrics identified in the SWMP, and the
actual metrics for actions completed in FY2023-2024.
Table C-1: Public Involvement and Participation Metrics and Results
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section C.2 (a) Continue to provide Continue to provide Report number of Adopt a Stream:939
Volunteer community community volunteer community volunteer participants in each City Storm drain marking: 14
involvement program opportunities. opportunities. volunteer opportunity Stream monitoring: 24
Foster a Stream: 229
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of program Manager of program
modifications. modifications.
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section C.2 (b) Conduct meeting(s)with I Conduct meeting(s)with Report dates for SMAC 10.5.2023— Draft MS4
Establish a mechanism for the SMAC. the SMAC. meetings and discussion Permit
public involvement topics pertaining to MS4 12.7.2023— Draft Budget
Evaluate the program Evaluate the program compliance FY25; Update on SW
effectiveness annually and effectiveness annually and Design Manual
notify the Water Quality notify the Water Quality 1.4.2024— Update on SW
Manager of program Manager of program Design Manual
modifications. modifications. 2.1.2024—SW Design
Manual Text Changes;
FY25 Budget
3.7.2024— Pigeon House
Branch Watershed Study,
FY25 Budget; Outreach
Arts Contest
4.4.2024— N/A
5.2.2024—SMAC
workplan development
6.6.2024—
Communications and
Public Engagement; SMAC
workplan development
9.5.2024—SMAC
workplan development
Part II Section C.2 (c) Maintain the stormwater Maintain the stormwater N/A, see helpline reporting N/A
Establish hotline(s) or administration helpline to administration helpline to metrics in Part II Section
helpline(s) receive public complaints. receive public complaints. B.2 (e)
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of plan program Manager of program
modifications. modifications.
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NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section C.2 (d) Maintain the webpage for Maintain the webpage for Report webpage link for https://raleighnc.gov/Suppo
Public review and the most recent version of the most recent version of SWMP rtPages/stormwater-
comment the SWMP. the SWMP. management-plan
Report mechanisms used The City uses the SWMP
Publicize a comment Publicize a comment for public review and website with the
period for updates to the period for updates to the comment on the SWMP Stormwater staff contact
SWMP. SWMP. information, the City's
Stormwater helpline phone
Evaluate the program Evaluate the program number, and email address
effectiveness annually and effectiveness annually and to provide citizens a
notify the Water Quality notify the Water Quality mechanism to comment on
Manager of program Manager of program the SWMP between
modifications. modifications. _ updates.
Part II Section C.2 (e) Place legal public notice to Place legal public notice to If public notice occurred for N/A
Public notice advertise public review and advertise public review and SWMP updates, report
comment opportunities comment opportunities mechanism(s) used to
when implementing a when implementing a advertise public review and
public public comment and public notice
involvement/participation involvement/participation period.
program, as needed. program, as needed.
Report number of SMAC 9
Evaluate the program Evaluate the program meetings that provided an
effectiveness annually and effectiveness annually and opportunity for public
notify the Water Quality notify the Water Quality involvement/participation
Manager of program Manager of program
modifications. modifications.
C.3 Program Assessment
All permit requirements for Public Involvement and Participation are being met with well-advertised opportunities offered multiple times per
year. While participation may vary due to influences outside of City staff control, community members continue to be involved in stewardship
and engagement opportunities. The Adopt a Stream program grew significantly in the number of participants, with 11 new groups joining the
program. Foster a Stream and Storm Drain Marking volunteer opportunities experienced slight decreases in participation over this reporting
year. The decrease in participation at the two Foster a Stream events could be attributed to poor weather conditions for the dates those events
were scheduled. The reclassification of the Environmental Educator position, which was filled in July 2024, will increase staff capacity for the
storm drain marking program during the next permit cycle. The Stream Monitoring volunteer program, which requires volunteers to complete a
training and commit to taking monthly samples over one year, increased slightly in the number of volunteers who submitted data. The
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NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Stormwater Management Advisory Commission (SMAC) met nine times this year, with public comment on local stormwater issues provided by
commission members and the community. SMAC will continue to regularly convene throughout the next year, have included engagement over
NPDES MS4 program areas as part of their current workplan, and will continue to serve as an effective vehicle for public input.
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ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Section D: Illicit Discharge Detection and Elimination
D.1 Program Narrative
The City's illicit discharge program began in 1995 and has operated continuously since then. This program is based on a City ordinance that
defines what constitutes an illicit discharge and an illicit connection and provides enforcement protocols. The ordinance provides the legal
authority to implement the Illicit Discharge Detection and Elimination (IDDE) program.
Illicit discharges and illicit connections are identified through reports from the public, reports from City staff across all departments, dry weather
screening observations, and outfall inspections. A team of four staff is assigned to the IDDE program to implement the dry weather screening
program, inspect outfalls, investigate potential illicit discharges, and maintain documentation of inspections, enforcement, and remediation
actions associated with those activities. Preventive measures include educating City staff and the public through various means, including
direct mailings to businesses, such as landscapers and restaurants, that have a history of illicit discharges. Outreach efforts also include
regular updates to website content, social media, utility billing and newsletter inserts, and coordination with Wake County and professional
associations to distribute illicit discharge prevention information to wider audiences.
D.2 Best Management Practices
Table D-1 includes a brief description of the IDDE best management practices required by the MS4 permit, the planned actions for the current
and future fiscal years as described in the SWMP, the annual reporting metrics identified in the SWMP, and the actual metrics for actions
completed in FY2023-2024.
Table D-1: IDDE Metrics and Results
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section D.2 (a) Maintain and enforce public Maintain and enforce public N/A, see Part II Section A.1 for N/A
Maintain appropriate ordinances. Update, if ordinances. Update, if reporting of legal authority
legal authorities necessary, to maintain legal necessary, to maintain legal updates
authority. authority.
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of program Manager of program
modifications. modifications.
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NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section D.2 (b) Maintain the storm sewer Maintain the storm sewer Report number of major Total: 856
Maintain a storm sewer system base map in GIS and system base map in GIS and outfalls
system base map of update annually as new update annually as new
major MS4 outfalls inventory is added. inventory is added. Provide overview map of See Figure D-1
receiving streams and major below
Evaluate the program Evaluate the program outfalls
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of program Manager of program
modifications. modifications.
Part II Section D.2 (c) Review annually the IDDE Review annually the IDDE Report number of dry weather 134 dry weather
Inspection/detection Plan and update, as needed. Plan and update, as needed. inspections completed and flow outfall
program to detect dry results inspections were
weather flows at MS4 Implement the IDDE Plan. Implement the IDDE Plan. completed; results
outfalls Report number of discharges in Table D-2.
Report any discharge that Report any discharge that reported to the DEQ Regional
constitutes an imminent constitutes an imminent Office or NC Division of 46 illicit discharges
threat to health or the threat to health or the Emergency Management due were reported to the
environment by phone or environment by phone or to an imminent threat to health DEQ Regional
email to the DEQ Regional email to the DEQ Regional or the environment Office due to an
Office (during business Office (during business imminent threat to
hours) or NC Division of hours)or NC Division of health or the
Emergency Management Emergency Management environment
State Operation Center State Operation Center
hotline (outside of business hotline (outside of business
hours)within 24 hours. hours)within 24 hours.
Raleigh Water is responsible Raleigh Water is responsible
for reporting of sanitary sewer for reporting of sanitary
overflows. sewer overflows.
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of plan and/or Manager of plan and/or
program modifications. program modifications.
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NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section D.2 (d) Review annually the Review annually the Report types of IDDE training 787 City staff
Employee training Education, Outreach, and Education, Outreach, and provided and number of staff in completed the IDDE
Public Involvement Plan, and Public Involvement Plan and attendance training module
update, as needed. update, as needed. through the City's
Success Factors
Conduct employee training Conduct employee training platform
and document attendance. and document attendance.
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of plan and/or Manager of plan and/or
program modifications. program modifications.
Part II Section D.2 (e) Maintain the stormwater Maintain the stormwater Report total number of illicit City staff responded
Maintain a public administration helpline to administration helpline to discharge complaints received to 209 calls of
reporting mechanism(s) receive public reports. receive public reports. potential illicit
See helpline reporting metrics discharges; 66 calls
Maintain the illicit discharge Maintain the illicit discharge in Table 5, Part II Section B.2 were received
reporting email address reporting email address (e) of SWMP through the City's
(IllegalDischarge@raleighnc. (IllegalDischarge@raleighnc. Stormwater helpline
qov). goy).
Coordinate with appropriate Coordinate with appropriate
City staff so illicit discharge City staff so illicit discharge
complaints received through complaints received through
the SeeClickFix app are the SeeClickFix app are
routed to Raleigh Stormwater. routed to Raleigh
Stormwater.
Evaluate the program
effectiveness annually and Evaluate the program
notify the Water Quality effectiveness annually and
Manager of program notify the Water Quality
modifications. Manager of program
modifications.
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NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section D.2 (f) Maintain IDDE inspection Maintain IDDE inspection Report dates of investigations, I See Table D-2
Documentation records, notices of violations records, notices of violations any enforcement action(s), and below
and compliance, and other and compliance, and other remediation that occurred
program records. program records.
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of program Manager of program
modifications. modifications.
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ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Figure D-1: Receiving waters and major outfalls
5B _
L 4 f
` . JR
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•
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DU �RHAM :• ♦ • / ROL
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APIA
RDU ! - ,. T •.
iiii4 A AA SO A fi
. ,•• • • �l
RRISVILLE 5• • 71,................ • .! , ~ •
•
•_ . • • • KNIGIc-DALE
A •• �•• ♦•
gar
AI • • • • A. 1 yi.- .,�/12 •7 Y - - •
I
Receiving Waters •
COR Outfall Category1 `I� •
• Major NPDES Outfall-General(Direct) iiNNZ
---n� ■ RALEIGH
• Major NPDES Outfall-Industrial(Direct) fff v
• Major NPDES Outfall-General(Non-Direct) ■ '.c�V
Major NPDES Outfall-Industrial(Non-Direct) 7
NC303d 2022 ' Zal la- T I \._-
NC Surface Waters / th GARNER ® la `� c.0 Raleigh GIS
Rev.8.1.2022 35

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Table D-2: IDDE investigations and actions taken October 1, 2023 - September 30, 2024
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
1437 Nottingham 10/2/2023 10/2/2023 Contractor pumping out water Investigated and found Not Required
Rd, Raleigh, NC, from an excavation not to be a water quality
27607 concern; no further
action taken
3000 Brook Mill Dr, 10/2/2023 10/3/2023 Carpet company dumping Notice of Violation Vacuum and removal
Raleigh, NC, 27612 wastewater in storm drain
2929 Capital Blvd, 10/3/2023 10/3/2023 Food truck was possibly dumping Warning Letter Not Required
Raleigh, NC, 27604 wastewater into a storm drain
914 Wimbleton Dr, 10/12/2023 10/12/2023 Potential Private SSO Investigated and found Not Required
Raleigh, NC, 27609 not to be a water quality
concern; no further
action taken
737 Hunting Ridge 11/6/2023 11/6/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Rd, Raleigh, NC, —690 gallons discharged, with authority
27615 —690 gallons reaching surface
waters
230 Seawell Ave, 10/6/2023 10/9/2023 Possible SSO from apartment Investigated and found Not Required
Raleigh, NC, 27601 complex not to be a water quality
concern; no further
action taken
706 E Jones St, 10/9/2023 10/10/2023 Storm drain smells like sewer Referred to proper Vacuum and removal
Raleigh, NC, 27601 authority
North Hills Dr, 10/9/2023 10/10/2023 Orange muddy water discharge Investigated and found Not Required
Raleigh, NC, 27612 to Mine Creek not to be a water quality
concern; no further
action taken
1900 Main Campus 11/12/2023 11/12/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Dr, Raleigh, NC, —1,380 gallons discharged, with authority
27606 —1,380 gallons reaching surface
waters
Rev. 8.1.2022 36

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
4421 Woodlawn Dr, 10/11/2023 10/12/2023 Neighbor washing bins in the Investigated and found Not Required
Raleigh, NC, 27616 road not to be a water quality
concern; no further
action taken
2420 Lake Wheeler 10/17/2023 10/17/2023 Fuel leak Warning Letter Sweeping and removal
Rd, Raleigh, NC,
27603
4612 Dansey Dr, 10/18/2023 10/18/2023 Private aerial sewer line Notice of Violation Vacuum and removal
Raleigh, NC, 27616 disconnected and discharging
into a creek
1903 Alexander Rd, 10/23/2023 10/23/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27608 -1,500 gallons discharged, with authority
-1,500 gallons discharged to
surface waters
2201 Raven Rd, 10/22/2023 10/23/2023 Neighbor disposing of dog waste Warning Letter Not Required
Raleigh, NC, 27614 bags into storm drain
2521 Shepherd 10/30/2023 10/31/2023 Car up on jacks possibly leaking Investigated and found Not Required
Valley St, Raleigh, fluids into street not to be a water quality
NC, 27610 concern; no further
action taken
7716 Prospector PI, 10/31/2023 10/31/2023 Vehicle parks along road and Investigated and found Not Required
Raleigh, NC, 27615 routinely leaks motor oil not to be a water quality
concern; no further
action taken
7800 Milltrace Run, 10/26/2023 10/31/2023 Yard waste debris being dumped Investigated and found Not Required
Raleigh, NC, 27615 into wooded/creek area not to be a water quality
concern; no further
action taken
2245 Garner Rd, 11/3/2023 11/3/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27610 -550 gallons discharged with authority
-500 gallons reaching surface
waters
7108 Longstreet Dr, 11/6/2023 11/6/2023 Private SSO at condominium Notice of Violation Vacuum and removal
Raleigh, NC, 27615 complex.
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NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
4000 New Bern Ave, 11/13/2023 11/14/2023 Landscapers blowing material Investigated and found Not Required
Raleigh, NC, 27610 into storm drain not to be a water quality
concern; no further
action taken
7720 Prospector PI, 11/16/2023 11/16/2023 Car parked on road leaking oil Investigated and found Sweeping and removal
Raleigh, NC, 27615 not to be a water quality
concern; no further
action taken
5501 Capitol Blvd, 11/16/2023 11/16/2023 Fats, oils, grease dumped into Notice of Violation Vacuum and removal
Raleigh, NC, 27616 storm drain
4000 Converse Dr, 11/16/2023 11/16/2023 Waste removal company possibly Investigated and found Not Required
Raleigh, NC, 27609 dumping a liquid into the storm not to be a water quality
drain concern; no further
action taken
2908 Chipmunk Ln, 11/21/2023 11/22/2023 Observed foam in the channel Investigated and found Not Required
Raleigh, NC, 27607 that drains to House Creek not to be a water quality
concern; no further
action taken
1117 Chatham Ln, 11/23/2023 11/23/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27610 - 990 gallons discharged, with 0 authority
gallons reaching surface waters
219 Oberlin Rd, 11/24/2023 11/27/2023 White foamy liquid splashed on Investigated and found Not Required
Raleigh, NC, 27605 pedestrians not to be a water quality
concern; no further
action taken
4520 Hargrove Rd, 11/27/2023 11/27/2023 Possible fuel from vehicle Investigated and found Vacuum and removal
Raleigh, NC, 27604 accident entered storm drain not to be a water quality
concern; no further
action taken
8300 Health Park, 11/28/2023 11/28/2023 Fire extinguisher residue left in Investigated and found Sweeping and removal
Raleigh, NC, 27615 parking lot not to be a water quality
concern; no further
action taken _
2601 Oxford Rd, 11/30/2023 11/30/2023 Red/Orange discharge reported Investigated and found Not Required
Raleigh, NC, 27608 in creek not to be a water quality
concern; no further
action taken
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NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
901 Hodges St, 12/14/2023 12/14/2023 Transformer pole fell over and Notice of Violation Vacuum and removal
Raleigh, NC, 27608 discharged 3 cooling tanks worth
of non-PCB cooling oil
3731 Charleston 12/2/2023 12/2/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Park Dr, Raleigh, —4,680 gallons discharged with authority
NC, 27604 —2,680 gallons reaching surface
waters
901 Hodges St, 12/4/2023 12/4/2023 Fats, oil, grease discharge Referred to proper Vacuum and removal
Raleigh, NC, 27608 authority
Homewood Banks 12/6/2023 12/7/2023 Suds and debris in creek Investigated and found Not Required
Dr& Crabtree Valley not to be a water quality
Ave, Raleigh, NC, concern; no further
27612 action taken
1901 Clark Ave, 12/11/2023 12/11/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27605 —325 gallons discharged with authority
—200 gallons reaching surface
waters
5832 Whitebud Dr, 12/11/2023 12/11/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27609 —2,040 gallons discharged with 0 authority
gallons reaching surface waters
2108 Balboa Rd, 12/10/2023 12/11/2023 Neighbor disposing of leaves into Investigated and found Not Required
Raleigh, NC, 27603 storm drain not to be a water quality
concern; no further
action taken
740 Powell Dr, 12/7/2023 12/11/2023 Pond appears to be a dark Investigated and found Not Required
Raleigh, NC, 27606 brown/black color not to be a water quality
concern; no further
action taken
2908 Chipmunk Ln, 12/10/2023 12/11/2023 White foam in creek behind Investigated and found Not Required
Raleigh, NC, 27607 house not to be a water quality
concern; no further
action taken
Yonkers Rd & N 12/12/2023 12/13/2023 Vehicle crashed into SCM device Referred to proper Excavation and
Raleigh Blvd, along Yonkers Rd, discharging — authority removal
Raleigh, NC, 27604 1 gallon of coolant into the device
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NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
8417 Sawyer Dr, 12/13/2023 12/13/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27613 -1,335 gallons discharged with authority
-1,335 gallons to surface waters.
700 Green Ridge Dr, 12/14/2023 12/14/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27609 -190 gallons discharged with -90 authority
gallons reaching surface waters
5020 Aspen 12/15/2023 12/15/2023 Potential fish kill in SCM device Investigated and found Not Required
Meadow St, Raleigh, not to be a water quality
NC, 27616 concern; no further
action taken
950 Peterson St, 12/15/2023 12/15/2023 Illegal dumping off State St. near Investigated and found Not Required
Raleigh, NC, 27610 Little Rock Creek not to be a water quality
concern; no further
action taken
705 Beacon Lake 12/19/2023 12/19/2023 Vehicle fire, oil discharged to Notice of Violation Vacuum and removal
Dr, Raleigh, NC, ground from firefighting activities
27610 and may have reached a storm
drain
6505 Lincolnville Rd, 12/20/2023 12/20/2023 Suspected private SSO Investigated and found Not Required
Raleigh, NC, 27607 not to be a water quality
concern; no further
action taken
601 Oleander Rd, 12/20/2023 12/20/2023 Private SSO out of sewer Warning Letter Vacuum and removal
Raleigh, NC, 27603 cleanout
914 Wimbleton Dr, 12/20/2023 12/20/2023 Claims of soap scum in creek Investigated and found Not Required
Raleigh, NC, 27609 not to be a water quality
concern; no further
action taken
436 Buck Jones Rd, 12/20/2023 12/20/2023 Gray water potentially discharged Warning Letter Source removed; no
Raleigh, NC, 27606 into the storm drain additional remediation
required
2801 Wake Forest 12/21/2023 12/21/2023 Grease interceptor overflow Investigated and found Not Required
Rd, Raleigh, NC, entering storm drain not to be a water quality
27609 concern; no further
action taken _
435 Woodburn Rd, 12/21/2023 12/21/2023 Grease trap overflow Warning Letter Vacuum and removal
Raleigh, NC, 27605
Rev. 8.1.2022 40

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
8901 Durant Rd, 12/23/2023 12/23/2023 Water distribution line failure at Investigated and found Not Required
Raleigh, NC, 27616 industrial facility at a rate of 900 not to be a water quality
gpm concern; no further
action taken
813 Barbara Dr, 12/22/2023 12/28/2023 Possible private SSO Warning Letter Not Required
Raleigh, NC, 27606
2601 N Raleigh 12/28/2023 12/28/2023 Possible paint from vehicle fire Investigated and found Not Required
Blvd, Raleigh, NC, entered storm drain not to be a water quality
27604 concern; no further
action taken
5801 Falls of Neuse 12/29/2023 12/29/2023 Potential motor vehicle fluids Investigated and found Not Required
Rd, Raleigh, NC, discharged not to be a water quality
27609 concern; no further
action taken
1500 Banbury Rd, 12/30/2023 12/30/2023 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27607 -1,100 gallons discharged, with authority
-800 gallons being discharged to
surface waters
6209 River Jasmine 1/2/2024 1/2/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Ln, Raleigh, NC, -143 gallons discharged, with authority
27604 -143 gallons reaching surface
waters
401 Capital Blvd, 1/5/2024 1/5/2024 Used motor oil discharged to curb Notice of Violation Vacuum and removal
Raleigh, NC, 27603 and entered the storm drain
2900 Briar Mill Trl, 1/5/2024 1/5/2024 Fecal odor at outfall during DWF Investigated and found Not Required
Raleigh, NC, 27612 not to be a water quality
concern; no further
action taken
4905 North Hills Dr, 1/10/2024 1/10/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27612 - 1450 gallons discharged, with authority
-1450 gallons reaching surface
waters _
4801 Blue Bird Ct, 1/13/2024 1/13/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27606 -252 gallons discharged, with authority
-252 gallons reaching surface
waters
Rev. 8.1.2022 41

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
6713 Perkins Dr, 1/16/2024 1/17/2024 Potential private SSO Investigated and found Not Required
Raleigh, NC, 27612 not to be a water quality
concern; no further
action taken
7301 Grist Mill Rd, 1/19/2024 1/19/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27615 -1500 gallons discharged with authority
-1500 gallons reaching surface
waters
2215 New Hope 1/26/2024 1/30/2024 Multiple mobile detailing stations Investigated and found Not Required
Church Rd, Raleigh, set up and process water not to be a water quality
NC, 27604 entering surface waters concern; no further
action taken
1709 High Holly Ln, 1/29/2024 1/29/2024 Discharge out of sewer service Warning Letter Vacuum and removal
Raleigh, NC, 27614 cleanout
3805 Brentwood Rd, 1/30/2024 1/31/2024 Grease interceptor cleanout Warning Letter Vacuum and removal
Raleigh, NC, 27604 overflowing from private business
600 Dacian Rd, 1/31/2024 1/31/2024 Oil leaking from machines Investigated and found Not Required
Raleigh, NC, 27610 working on greenway trail not to be a water quality
concern; no further
action taken
5012 Brookhaven 2/1/2024 2/2/2024 Sewage leaking from private Notice of Violation Excavation and
Dr, Raleigh, NC, property-1000 gallons removal
27612 discharged
5536 Neuse View 2/4/2024 2/4/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Dr, Raleigh, NC, -1500 gallons discharged with authority
27610 -200 gallons discharged to
surface waters
2645 E Millbrook 2/3/2024 2/5/2024 Sewer cleanout overflowing Warning Letter Vacuum and removal
Rd, Raleigh, NC,
27604
2215 New Hope 2/3/2024 2/5/2024 Mobile car washing activities with Warning Letter Remediation not
Church Rd, Raleigh, wash water entering stormwater needed
NC, 27604 system
Greyson St & 2/9/2024 2/9/2024 SWS truck ruptured fuel tank Summary Memorandum Sweeping and removal
Dacian Rd, Raleigh,
NC, 27610
Rev. 8.1.2022 42

CS NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
1020 Corporation 2/9/2024 2/9/2024 Truck driver dumping grease Investigated and found Not Required
Pkwy, Raleigh, NC, down a manhole not to be a water quality
27610 concern; no further
action taken
6028 Triangle Dr, 2/12/2024 2/12/2024 Discharging processed Notice of Violation Source removed; no
Raleigh, NC, 27617 wastewater from industrial activity additional remediation
required
1527 Tryon Rd, 2/16/2024 2/16/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27603 -475 gallons discharged, with authority
-375 gallons reaching surface
waters
8509 Lakewood Dr, 2/27/2024 2/27/2024 Potential dumping into creek Investigated and found Not Required
Raleigh, NC, 27613 under Lakewood Drive not to be a water quality
concern; no further
action taken
900 Lorimer Rd, 2/29/2024 2/29/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27606 -750 gallons discharged, with authority
-650 gallons reaching surface
waters
2601 S Saunders St, 3/2/2024 3/5/2024 Mobile car washing activities Investigated and found Not Required
Raleigh, NC, 27603 not to be a water quality
concern; no further
action taken
5337 Huntley 3/5/2024 3/5/2024 SWS truck discharged hydraulic Summary Memorandum Vacuum and removal
Overlook Dr, oil
Durham, NC, 27703
1101 Ivy Ln, 3/5/2024 3/6/2024 Painters washing equipment/tools Warning Letter Not Required
Raleigh, NC, 27609 in creek with water from the
house
4583 Harris Brook 3/7/2024 3/7/2024 Potential sewer discharge Referred to proper Not Required
Dr, Raleigh, NC, authority
27616
7049 Jeffreys Creek 3/7/2024 3/7/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Ln, Raleigh, NC, -6,059 gallons discharged, with authority
27616 an undetermined amount
reaching surface waters
Rev. 8.1.2022 43

CS NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
2110 Blue Ridge Rd, 3/8/2024 3/8/2024 Suds in creek Warning Letter Not Required
Raleigh, NC, 27607
708 Glenbrook Dr, 3/11/2024 3/12/2024 Use of harsh chemicals in garage Investigated and found Not Required
Raleigh, NC, 27610 not to be a water quality
concern; no further
action taken
4336 Lyman Ave, 3/12/2024 3/12/2024 Resident dumping yard waste Warning Letter Not Required
Raleigh, NC, 27616 into SCM
8000 Monument Ln, 3/14/2024 3/14/2024 Mobile car washing activities Investigated and found Not Required
Raleigh, NC, 27615 not to be a water quality
concern; no further
action taken
3844 Pin Oak Rd, 3/13/2024 3/14/2024 Cars parked alongside street with Investigated and found Not Required
Raleigh, NC, 27604 potential to discharge motor oil not to be a water quality
near storm drain concern; no further
action taken
1720 Quail Ridge 3/18/2024 3/19/2024 Pipe discharge near pool pump Investigated and found Not Required
Rd, Raleigh, NC, house not to be a water quality
27609 concern; no further
action taken
1678 Nottingham 3/18/2024 3/19/2024 Potential SSO Investigated and found Not Required
Rd, Raleigh, NC, not to be a water quality
27607 concern; no further
action taken
6927 Buffaloe Rd, 3/20/2024 3/20/2024 Diesel fuel spill Warning Letter Vacuum and removal
Raleigh, NC, 27616
2820 Knowles St, 3/19/2024 3/21/2024 Sewage cleanout leaking Investigated and found Not Required
Raleigh, NC, 27603 not to be a water quality
concern; no further
action taken
105 Keeter Center 3/22/2024 3/25/2024 Oil and fuel leaking from junk Investigated and found Not Required
Dr, Raleigh, NC, vehicles at training facility not to be a water quality
27601 concern; no further
action taken
Rev. 8.1.2022 44

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
3900 Wester Rd, 3/28/2024 4/1/2024 Flow/Seeping observed from the Investigated and found Not Required
Raleigh, NC, 27604 stream bank during stream walk not to be a water quality
concern; no further
action taken
11201 Galleria Ave, 4/2/2024 4/3/2024 Repeatedly dumping cooking Notice of Violation Excavation and
Raleigh, NC, 27614 oil/grease behind restaurant removal
1401 New Bern Ave, 4/3/2024 4/3/2024 Grease interceptor overflowing Notice of Violation Vacuum and removal
Raleigh, NC, 27610
11 S Boylan Ave, 4/3/2024 4/3/2024 Dumping of grease down the Investigated and found Not Required
Raleigh, NC, 27603 storm drain on South Boylan not to be a water quality
Avenue between W. Morgan and concern; no further
Hillsborough Street action taken
9950 Durant Rd, 4/8/2024 4/8/2024 Cooking oil dumped into storm Warning Letter Vacuum and removal
Raleigh, NC, 27614 drain
222 Fayetteville St, 4/8/2024 4/8/2024 Used oil container left on Investigated and found Not Required
Raleigh, NC, 27601 sidewalk not to be a water quality
concern; no further
action taken
1440 & Six Forks 4/9/2024 4/9/2024 A vehicle carrying a large amount Notice of Violation Berm construction
Rd, Raleigh, NC, of cooking oil overturned and
27609 _ spilled into a storm drain
634 Stacy St, 4/15/2024 4/15/2024 Stream discoloration present Investigated and found Not Required
Raleigh, NC, 27607 near Meredith College not to be a water quality
concern; no further
action taken
500 Royal St, 4/15/2024 4/16/2024 Auto shop has automotive fluids Warning Letter Sweeping and removal
Raleigh, NC, 27607 discarded across their property
1451 Sawyer Rd, 4/13/2024 4/15/2024 Paint spilled near a storm drain Investigated and found Not Required
Raleigh, NC, 27610 not to be a water quality
concern; no further
action taken
6308 J Richard Dr, 4/15/2024 5/11/2024 Chlorine spill at pool supply and Notice of Violation Excavation and
Raleigh, NC, 27617 _ maintenance company removal
1141 Raleigh School 4/15/2024 4/16/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Dr, Raleigh, NC, —24,800 gallons, with —13,700 authority
27607 gallons reaching surface waters
Rev. 8.1.2022 45

CS NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
7440 Louisburg Rd, 4/17/2024 4/18/2024 Diesel spill in grocery store Notice of Violation Vacuum and removal
Raleigh, NC, 27616 parking lot
3315 Vinson Ct, 4/17/2024 4/18/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27604 weeping from creek bank authority
Rock Quarry Rd & I 4/19/2024 4/19/2024 Septic trunk overturned on exit Notice of Violation Vacuum and removal
40, Raleigh, NC, ramp, discharging some volume
27610 into a storm drain
4700 Hiddenbrook 4/19/2024 4/19/2024 Storm drain smelled like sewer Investigated and found Not Required
Dr, Raleigh, NC, not to be a water quality
27609 concern; no further
action taken
2001 N Raleigh 4/19/2024 4/19/2024 Potential algae blooms Investigated and found Not Required
Blvd, Raleigh, NC, not to be a water quality
27604 concern; no further
action taken
2940 Wakefield 4/19/2024 4/19/2024 Laundry business dumping Investigated and found Not Required
Pines Dr, Raleigh, chemicals from 55-gallon drums not to be a water quality
NC, 27614 concern; no further
action taken
3030 Capital Blvd, 4/16/2024 4/19/2024 Car wash operating behind Investigated and found Not Required
Raleigh, NC, 27604 business and potentially not to be a water quality
discharging to a nearby storm concern; no further
drain action taken
4220 Craftsman Dr, 4/18/2024 4/26/2024 Potential sanitary sewer leak Investigated and found Not Required
Raleigh, NC, 27609 observed during Marsh Creek not to be a water quality
stream walk concern; no further
action taken
3110 New Bern Ave, 4/24/2024 4/26/2024 Sewage overflowing from Investigated and found Not Required
Raleigh, NC, 27610 cleanout not to be a water quality
concern; no further
action taken
316 Fayetteville St, 4/26/2024 4/26/2024 Unknown discharge on Investigated and found Not Required
Raleigh, NC, 27601 Fayetteville St not to be a water quality
concern; no further
action taken
Rev. 8.1.2022 46

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
3510 Wade Ave, 4/27/2024 4/30/2024 Contractors dumping paint Investigated and found Not Required
Raleigh, NC, 27607 not to be a water quality
concern; no further
action taken
4321 Lassiter at 5/1/2024 5/1/2024 Sewage discharging out of Notice of Violation Vacuum and removal
North Hills Ave, stormwater pipe on North Hills
Raleigh, NC, 27609 property
' 10320 Globe Rd, 5/3/2024 5/3/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Morrisville, NC, -5,498 gallons discharged with 0 authority
27560 gallons reaching surface waters.
1200 S State St, 5/6/2024 5/6/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27610 -140 gallons discharged, with 0 authority
gallons reaching surface waters
741 Wimbleton Dr, 5/7/2024 5/7/2024 Staff observed a french drain pop Warning Letter Not Required
Raleigh, NC, 27609 up at 741 Wimbleton Dr
discharging milky white
substance
630 Rock Quarry 5/8/2024 5/8/2024 Grey/metallic looking discharge Investigated and found Not Required
Rd, Raleigh, NC, out of PVC pipe not to be a water quality
27610 concern; no further
action taken
1116 Lombar St, 5/9/2024 5/9/2024 Sewage debris around cleanout, Warning Letter Disinfectant application
Raleigh, NC, 27610 discharge mostly contained in
yard/sidewalk
1520 E Millbrook 5/16/2024 5/17/2024 Sewage backing up out of Investigated and found Not Required
Rd, Raleigh, NC, manhole into SCM not to be a water quality
27609 concern; no further
action taken
7100 Great Laurel 5/17/2024 5/17/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Dr, Raleigh, NC, -5000 gallons discharged, with authority
27616 -500 gallons reaching surface
waters
1201 Sunnybrook 5/17/2024 5/22/2024 Chemicals used to remove graffiti Other Source removed; no
Rd, Raleigh, NC, were flowing into surface waters additional remediation
27610 required
Rev. 8.1.2022 47

CS NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
7401 Sandy Creek 5/20/2024 5/20/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Dr, Raleigh, NC, -2600 gallons discharged, with authority
27615 -2600 gallons reaching surface
waters
2421 Landmark Dr, 5/17/2024 5/20/2024 Chemicals discharged directly to Notice of Violation Source removed; no
Raleigh, NC, 27607 the storm drain additional remediation
required
Atlantic Ave & E 5/22/2024 5/22/2024 Vehicle accident with diesel fuel Notice of Violation Sweeping and removal
Millbrook Rd, spilled on road
Raleigh, NC, 27616
Hargrove Rd & 5/22/2024 5/23/2024 Trash truck fire Notice of Violation Sweeping and removal
Spring Forest Rd,
Raleigh, NC, 27616
8421 Hobhouse Cir, 5/22/2024 5/22/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27615 -4700 gallons discharged, with authority
-100 gallons reaching surface
waters
7116 Longstreet Dr, 5/20/2024 5/21/2024 Private SSO Warning Letter Disinfectant application
Raleigh, NC, 27615
3611 Pine Knoll Dr, 5/24/2024 5/28/2024 Sewage discharging out of Investigated and found Not Required
Raleigh, NC, 27604 cleanout near sidewalk not to be a water quality
concern; no further
action taken _
2235 New Hope 5/24/2024 5/28/2024 Food truck dumping wastewater Investigated and found Not Required
Church Rd, Raleigh, into storm drain not to be a water quality
NC, 27604 concern; no further
action taken
5265 Six Forks Rd, 5/31/2024 5/31/2024 Private SSO discharging to the Notice of Violation Excavation and
Raleigh, NC, 27609 City's storm system and reaching removal
surface waters
608 Carolina Pines 6/3/2024 6/3/2024 Broken sewer lateral service line Notice of Violation Disinfectant application
Ave, Raleigh, NC,
27603
Rev. 8.1.2022 48

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
2304 Gorman St, 6/3/2024 6/3/2024 Grease trap is overflowing and Notice of Violation Vacuum and removal
Raleigh, NC, 27606 entering a catch basin
5811 Poyner Village 6/6/2024 6/6/2024 Cooking grease ponded in Notice of Violation Vacuum and removal
Pkwy, Raleigh, NC, parking lot
27616
410 Chamberlain St, 6/8/2024 6/10/2024 Suds discharging out of pipe from Investigated and found Not Required
Raleigh, NC, 27607 basement not to be a water quality
concern; no further
action taken
307 N Bloodworth 6/8/2024 6/10/2024 Recurring sewage overflow onto Investigated and found Not Required
St, Raleigh, NC, sidewalk not to be a water quality
27601 concern; no further
action taken
533 E Edenton St, 6/8/2024 6/10/2024 Sewer odor coming from storm Investigated and found Not Required
Raleigh, NC, 27601 drain on property not to be a water quality
concern; no further
action taken
1669 North Market 6/9/2024 6/10/2024 Mobile car washing discharge Investigated and found Not Required
Dr, Raleigh, NC, entering storm drain not to be a water quality
27609 concern; no further
action taken
725 Rock Quarry 6/13/2024 6/14/2024 Chemical dumping near fence Investigated and found Not Required
Rd, Raleigh, NC, line not to be a water quality
27610 concern; no further
action taken
1917 Nancy Ann Dr, 6/18/2024 6/18/2024 Workers dumped unused Notice of Violation Sweeping and removal
Raleigh, NC, 27607 concrete down storm drains
410 Chamberlain St, 6/20/2024 6/20/2024 Soapy discharge coming from Notice of Violation Not Required
Raleigh, NC, 27607 pipe located from basement
4401 Log Cabin Dr, 6/21/2024 6/21/2024 Unknown powder dumped into Investigated and found Not Required
Raleigh, NC, 27616 storm drain not to be a water quality
concern; no further
action taken
5800 Departure Dr, 6/24/2024 6/25/2024 Paint dumped in creek Investigated and found Not Required
Raleigh, NC, 27616 not to be a water quality
concern; no further
action taken
Rev. 8.1.2022 49

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
4025 Iverson St, 6/24/2024 6/25/2024 Potential illicit discharge Investigated and found Not Required
Raleigh, NC, 27604 not to be a water quality
concern; no further
action taken
4129 Commodity 6/25/2024 6/25/2024 Someone changed oil over storm Investigated and found Not Required
Pkwy, Raleigh, NC, drain and spilled a little bit not to be a water quality
27610 concern; no further
action taken
321 Leagan Dr, 6/26/2024 6/26/2024 Concrete wash out discharging to Notice of Violation Vacuum and removal
Raleigh, NC, 27603 curb and entering a storm drain
111 Cox Ave, 7/26/2024 7/26/2024 Concrete wash out discharging to Notice of Violation Source removed; no
Raleigh, NC, 27605 curb and entering a storm drain additional remediation
required
6225 Saybrooke Dr, 6/26/2024 6/26/2024 Potential automotive fluids Investigated and found Not Required
Raleigh, NC, 27604 discharging to the road not to be a water quality
concern; no further
action taken
11511 Arnold 6/25/2024 6/26/2024 Automotive fluids Investigated and found Not Required
Palmer Dr, Raleigh, not to be a water quality
NC, 27617 concern; no further
action taken
8300 Health Park, 6/26/2024 6/27/2024 Sediment deposited into creek Notice of Violation Vacuum and removal
Raleigh, NC, 27615 _
1839 Capital Blvd, 6/30/2024 7/1/2024 Soap and wastewater from car Investigated and found Not Required
Raleigh, NC, 27604 washing activities in street not to be a water quality
concern; no further
action taken
5013 Amberfield 7/1/2024 7/1/2024 Animal by-products discharged to Warning Letter Source removed; no
Way, Raleigh, NC, storm drain additional remediation
27604 required
5501 Capital Blvd, 7/2/2024 7/2/2024 Grease dumped into storm drain Warning Letter Vacuum and removal
Raleigh, NC, 27616
4359 Six Forks Rd, 7/5/2024 7/5/2024 Car wash not collecting their Investigated and found Not Required
Raleigh, NC, 27609 waste material not to be a water quality
concern; no further
action taken
Rev. 8.1.2022 50

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
2950 E Millbrook 7/7/2024 7/8/2024 Mobile car washing activities Investigated and found Not Required
Rd, Raleigh, NC, potentially discharging to a not to be a water quality
27604 nearby storm drain concern; no further
action taken
2807 Ashland St, 7/11/2024 7/11/2024 A catch basin observed to have Investigated and found Not Required
Raleigh, NC, 27608 dry weather flow not to be a water quality
concern; no further
action taken
I 2331 Grant Ave, 7/12/2024 I 7/15/2024 Irrigation continuing to run water Investigated and found Not Required
Raleigh, NC, 27608 and washing all the chemicals not to be a water quality
down the street and the sidewalk concern; no further
action taken
1116 N Blount St, 7/12/2024 I 7/15/2024 Sand pile washed away and Notice of Violation Sweeping and removal
Raleigh, NC, 27604 deposited into surface waters
3110 New Bern Ave, 7/15/2024 7/15/2024 Residual grease and odor coming Notice of Violation Sweeping and removal
Raleigh, NC, 27610 from trash dumpsters
4516 Baymar Dr, 7/18/2024 7/18/2024 Large amount of water running Investigated and found Not Required
Raleigh, NC, 27612 over the trail on Crabtree Creek not to be a water quality
concern; no further
action taken
517 W Cabarrus St, - 7/19/2024 - 7/22/2024 Someone washing out paint tools Notice of Violation Not Required
Raleigh, NC, 27603
2305 Lake Wheeler - 7/23/2024 - 7/23/2024 Oil spilled in parking lot Notice of Violation Not Required
Rd, Raleigh, NC,
27603
304 Bon Marche Ln, 7/24/2024 7/25/2024 White substance washing across Warning Letter Vacuum and removal
Raleigh, NC, 27615 the street from a drainage pipe
127 W Hargett St, 7/23/2024 7/29/2024 Constant stream of water being Investigated and found Not Required
Raleigh, NC, 27601 discharged into storm drain not to be a water quality
concern; no further
action taken
4110 Briargrove Cir, 7/28/2024 7/29/2024 Vehicle struck an object, Warning Letter Not Required
Raleigh, NC, 27607 damaging fuel tank, leaking fuel
in parking lot and some into
nearby storm drain
Rev. 8.1.2022 51

CS NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
Capital Blvd & 1540, 7/30/2024 7/30/2024 Sheet rock mud was spilled into Referred to proper Sweeping and removal
Raleigh, NC, 27616 roadway at Capital Blvd near I- authority
540
2312 Dahlgreen Rd, 8/1/2024 8/1/2024 Hydraulic oil leak from SWS Investigated and found Not Required
Raleigh, NC, 27615 trucks not to be a water quality
concern; no further
action taken
Forum Dr& Health 8/1/2024 8/2/2024 Sediment from horizontal drilling Warning Letter Not Required
Park, Raleigh, NC, operation washed onto sidewalk
27615 and down curbline into the storm
drain
411 N Harrington St, 8/5/2024 8/5/2024 Dumpster leaking Notice of Violation Not Required
Raleigh, NC, 27603
4408 Jacqueline Ln, 8/6/2024 8/6/2024 Private SSO Warning Letter Not Required
Raleigh, NC, 27616
5004 Kota St, 8/8/2024 8/8/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27610 —20 gallons authority
716 Pebblebrook Dr, 8/9/2024 8/9/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27609 —2,450 gallons authority _
808 Cotton PI, 8/12/2024 8/12/2024 Water being pumped to the curb Investigated and found Not Required
Raleigh, NC, 27601 from the back of the house not to be a water quality
concern; no further
action taken
McGuire Dr& 8/13/2024 8/14/2024 Excessive amount of dog waste Investigated and found Not Required
Farmlea Cir, on sidewalk and street not to be a water quality
Raleigh, NC, 27616 concern; no further
action taken
8056 Remington 8/13/2024 8/14/2024 Grass clippings are being blown Warning Letter Not Required
Heights Dr, Raleigh, or left on the street by the
NC, 27616 Homeowner
7204 Pinewood Ln, 8/14/2024 8/14/2024 Runoff is brown slime and owner Investigated and found Not Required
Raleigh, NC, 27616 would like it tested not to be a water quality
concern; no further
action taken
Rev. 8.1.2022 52

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
8071 Monument Ln, 8/14/2024 8/14/2024 Mobile car washing activities Investigated and found Not Required
Raleigh, NC, 27615 not to be a water quality
concern; no further
action taken
2400 Hillsborough 8/15/2024 8/15/2024 Discharge running into the street Investigated and found Not Required
St, Raleigh, NC, not to be a water quality
27607 concern; no further
action taken
401 Ramblewood 8/14/2024 8/15/2024 Blue discoloration in creek Investigated and found Not Required
Dr, Raleigh, NC, not to be a water quality
27609 concern; no further
action taken
516 N East St, 8/17/2024 8/19/2024 Concrete wash discharged to Investigated and found Not Required
Raleigh, NC, 27604 road not to be a water quality
concern; no further
action taken
Ronald Dr& 8/16/2024 8/19/2024 Mobile car washing, with wash Investigated and found Not Required
Craftsman Dr, going into storm drain not to be a water quality
Raleigh, NC, 27609 concern; no further
action taken
9100 Glenwood 8/19/2024 8/19/2024 Unknown liquid being dumped on Investigated and found Not Required
Ave, Raleigh, NC, the backside of the property not to be a water quality
27617 concern; no further
action taken
2817 Roundleaf Ct, 8/21/2024 8/22/2024 Automotive fluids discharged to Warning Letter Not Required
Raleigh, NC, 27604 road
7500 Old Wake 8/23/2024 8/23/2024 Load fire in trash truck, some Notice of Violation Sweeping and removal
Forest Rd, Raleigh, liquid was discharged during
NC, 27616 firefighting activities
3400 Fernwood Dr, 8/23/2024 8/23/2024 SSO —675 Gallons discharged Referred to proper Vacuum and removal
Raleigh, NC, 27612 authority
5700 Louisburg Rd, 8/24/2024 8/26/2024 Food truck is draining some Notice of Violation Not Required
Raleigh, NC, 27616 unknown fluid into the city storm
drain
2772 Everett Ave, 8/26/2024 8/26/2024 Fuel oil in un-named Tributary Notice of Violation Not Required
Raleigh, NC, 27607
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Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
417 Gardner St, 8/26/2024 8/26/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27607 -365 gallons discharged authority
3601 New Bern Ave, 8/27/2024 8/27/2024 Possible carwash process water Warning Letter Not Required
Raleigh, NC, 27610 entering storm drain
W Lane St, Raleigh, 8/29/2024 8/29/2024 Potential discharge of Investigated and found Not Required
NC, 27603 fuel/hydraulic oil not to be a water quality
concern; no further
action taken
1839 Capital Blvd, 8/28/2024 8/29/2024 Mobile carwash concern Investigated and found Not Required
Raleigh, NC, 27604 not to be a water quality
concern; no further
action taken
8601 Olde Station 9/3/2024 9/4/2024 Discolored creek, potentially paint Investigated and found Not Required
Dr, Raleigh, NC, dumped into creek not to be a water quality
27615 concern; no further
action taken
421 Chapanoke Rd, 9/1/2024 9/3/2024 Mobile carwash concern Investigated and found Not Required
Raleigh, NC, 27603 not to be a water quality
concern; no further
action taken _
3800 Hillsborough 9/3/2024 9/3/2024 SSO into catch basin Notice of Violation Vacuum and removal
St, Raleigh, NC,
27607
3436 Singleleaf Ln, 9/3/2024 9/4/2024 Raw sewage discharged on road Notice of Violation Vacuum and removal
Raleigh, NC, 27616
5622 Louisburg Rd, 9/4/2024 9/4/2024 Commercial car wash Notice of Violation Not Required
Raleigh, NC, 27616 discharging its wash water into
stormwater yard inlet
1527 Crest Rd, 9/6/2024 9/6/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27606 -870 gallons discharged authority
2301 Beechridge 9/9/2024 9/9/2024 Pool water discharged into storm Warning Letter Not Required
Rd, Raleigh, NC, drain
27608
2536 Albemarle 9/10/2024 9/10/2024 Sewer odor discovered after it Investigated and found Not Required
Ave, Raleigh, NC, rains along the lake not to be a water quality
27610 concern; no further
action taken
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Address Date Date Description Enforcement Actions Remediation Actions
Received Responded Taken Taken
920 Williams Rd, 9/11/2024 9/11/2024 City of Raleigh SSO Referred to proper Vacuum and removal
Raleigh, NC, 27610 — 100 gallons discharged authority
Six Forks Rd & I 9/11/2024 9/11/2024 Overturned diesel generator Notice of Violation Not Required
440, Raleigh, NC, leaked fuel into curb and catch
27609 basin
4001 Beryl Rd, 9/12/2024 9/12/2024 Unanticipated bypass of industrial Notice of Violation Not Required
Raleigh, NC, 27607 wastewater entering storm drain
5108 New Bern Ave, 9/13/2024 9/13/2024 Vehicle maintenance fluids Notice of Violation Vacuum and removal
Raleigh, NC, 27610 discharging and entering pond
5253 Covington 9/16/2024 9/16/2024 Vehicle parked on street Investigated and found Not Required
Bend Dr, Raleigh, discharging motor oil not to be a water quality
NC, 27613 concern; no further
action taken
1 W Lenoir St, 9/18/2024 9/18/2024 Hydraulic oil discharged from Summary Memorandum Vacuum and removal
Raleigh, NC, 27601 street sweeper
1008 Dogwood Ln, 9/19/2024 9/19/2024 Transformer damaged Investigated and found Not Required
Raleigh, NC, 27607 not to be a water quality
concern; no further
action taken _
5605 Bringle Ct, 9/20/2024 9/20/2024 Private SSO entering curb inlet Notice of Violation Vacuum and removal
Raleigh, NC, 27610
1101 Mercantile Dr, 9/23/2024 9/24/2024 Cooking oil discharging from Notice of Violation Vacuum and removal
Raleigh, NC, 27609 dumpsters behind restaurant
NOV= Notice of Violation
SWS = Solid Waste Services
SSO=Sanitary Sewer Overflow
D.3 Program Assessment
Staff continue to meet all IDDE permit requirements and completed 209 site investigations during the reporting period, which is an approximate
2.5% increase from the previous reporting year. There was a —3% increase in City of Raleigh SSOs and a —58% increase in private SSOs from
the previous reporting year. Staff also saw a 30% increase in discharges associated with fats, oils, and grease (FOG)from the previous year
and a —10% increase in oil/automotive fluids source identification. The increase in overall investigations, SSOs, FOG discharges, and
oil/automotive fluid discharges sources may be a result of increased staff and public awareness due to the effectiveness of the City's
Educations and Outreach program. In addition, continued City staff responsiveness and communication across the organization may have
increased notification and reporting to Stormwater staff for City SSO incidents. An additional '/2 FTE was added to this work group
approximately mid-year which increased staff coverage and response capacity over the last several months.
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Staff met in April to review the IDDE program plan and all associated standard operating procedures (SOPs)for the IDDE program. Only minor
updates were made throughout the documents. The self-audit that was conducted in June and did not identify any gaps in compliance but did
identify a few opportunities to further enhance the program. Throughout the next reporting year, staff will utilize data on discharge sources for
targeted education and outreach efforts, to inform dry weather flow inspection, and to further coordinate with Raleigh Water staff who regularly
assist with SSO complaints.
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Section E: Construction Site Runoff Controls
E.1 Program Narrative
The City has implemented construction site runoff controls (erosion and sediment control) since the 1970s. This program is delegated to the
City and overseen by DEQ. The City erosion and sediment control ordinance provides legal authority for the program in the City corporate
limits and extraterritorial jurisdiction (ETJ) area and is updated when necessary to meet DEQ's minimum requirements. Ordinance changes are
noticed and subject to public hearing prior to adoption, as described in Section C.
The program includes plan review, permitting, inspection, education, and enforcement activities to control construction site runoff. For all
projects that disturb greater than one acre, an NPDES construction permit is required; that application should be made to DEQ for permit
coverage. In addition, all publicly funded projects that disturb more than one acre are required to obtain Erosion and Sediment Control plan
approval through DEQ. The City also receives and responds to calls and concerns from citizens related to runoff from construction sites on a
regular basis.
E.2 Best Management Practices
Table E-1 includes a brief description of the Construction Site Runoff Controls best management practices required by the MS4 permit, the
planned actions for the current and future fiscal years as described in the SWMP, the annual reporting metrics identified in the SWMP, and the
actual metrics for actions completed in FY2023-2024.
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Table E-1: Construction Site Runoff Controls Metrics and Results
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section E.2 (a) Implement standard Implement standard Report number of Inspections: 15,179
The permittee has a construction site inspection construction site inspection inspections and NOVs: 28
delegated or authorized procedures. procedures. enforcement activities Civil Penalties: 1
Sediment and Erosion conducted
Control Program. As such, Perform erosion and sediment Perform erosion and sediment
to the extent authorized by control plan reviews. control plan reviews.
law, the permittee is
responsible for compliance Perform enforcement activities, Perform enforcement activities,
with the Sediment if necessary. if necessary.
Pollution Control Act of
1973 and Chapter 4 of Evaluate the program Evaluate the program
Title 15A of the North effectiveness annually and effectiveness annually and
Carolina Administrative notify the Water Quality notify the Water Quality
Code. The delegated or Manager of program Manager of program
authorized Sediment and modifications. modifications.
Erosion Control Program
effectively meets the MEP
standard for Construction
Site Runoff Controls by
permitting and controlling
development activities
disturbing one or more
acres of land surface and
those activities less than
one acre that are part of a
larger common plan of
development as authorized
under the Sediment
Pollution Control Act of
1973 and Chapter 4 of
Title 15A of the North
Carolina Administrative
Code.
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section E.2 (b) Perform construction site Perform construction site N/A, see reporting metrics I N/A
The NCG010000 permit inspections for the erosion and inspections for the erosion and in SWMP Table 7 and Part
establishes requirements sediment control program and sediment control program and II Section E.2 (a)and Part II
for construction site appropriate enforcement appropriate enforcement Section D.2 (f)of the permit
operators to control waste activities that meet activities that meet
such as discarded building requirements of Part II Section requirements of Part II Section
materials, concrete truck E.2 (a), if necessary. E.2 (a), if necessary.
washout, chemicals, litter,
and sanitary waste at the Perform illicit discharge Perform illicit discharge
construction site that may investigations when reported by investigations when reported by
cause adverse impacts to City staff or residents. City staff or residents.
water quality.
Part II Section E.2 (c)The Evaluate the program Evaluate the program
permittee shall provide and effectiveness annually and effectiveness annually and
promote a means for the notify the Water Quality notify the Water Quality
public to notify the Manager of program Manager of program
appropriate authorities of modifications. modifications.
observed erosion and
sedimentation problems.
The permittee may
implement a plan
promoting the existence of
the DEQ "Stop Mud"
hotline (1-866- STOPMUD)
to meet the requirements
of this paragraph.
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Part II Section E.2 (c) Maintain the stormwater Maintain the stormwater N/A, see reporting metrics I N/A
The permittee shall administration helpline to administration helpline to in SWMP Table 5 and Part
provide and promote a receive public reports. receive public reports. II Section B.2 (c) and (e) of
means for the public to the permit
notify the appropriate Evaluate the program Evaluate the program
authorities of observed effectiveness annually and effectiveness annually and
erosion and sedimentation notify the Water Quality notify the Water Quality
problems. The permittee Manager of program Manager of program
may implement a plan modifications. modifications.
promoting the existence of
the DEQ "Stop Mud"
hotline (1-866- STOPMUD)
to meet the requirements
of this paragraph.
Part II Section E.2 (d) Coordinate with DEQ for Coordinate with DEQ for Report number of plans that 23
For new development and development and development and required DEQ coordination
redevelopment projects to redevelopment projects by redevelopment projects by for entities with eminent
be built within the entities with eminent domain entities with eminent domain domain authority
permittee's planning authority, if necessary. This authority, if necessary. This
jurisdiction by entities with includes land-disturbing includes land-disturbing
eminent domain authority, activities conducted by local, activities conducted by local,
the permittee shall, to the state, or United States state, or United States
maximum extent governments or entities with the governments or entities with the
practicable, coordinate the power of eminent domain (e.g., power of eminent domain (e.g.,
approval of the public utilities), which remain public utilities), which remain
construction site runoff under jurisdiction of the Division under jurisdiction of the Division
control with the DEMLR. of Energy, Mineral, and Land of Energy, Mineral, and Land
Resources (DEMLR). Resources (DEMLR).
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of program Manager of program
modifications. modifications.
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E.3 Program Assessment
The Construction Site Runoff Control Program continued to meet all permit requirements FY2023-2024 and exceeded the number of routine
inspections conducted in the previous reporting period. This team became fully staffed at the end of the last reporting period and has remained
so throughout a majority of this reporting period. Staff continue to issue Notice of Violations and civil penalties and routinely utilize non-
traditional enforcement tools such as withholding Certificates of Occupancy, preventing building permit issuance, and halting trade inspections
to achieve site compliance. Staff continue to document inspection and enforcement procedures and make changes to the UDO to improve
overall program effectiveness and compliance.
On September 3, 20234, City Council approved a UDO change that will remove the City's Guidelines for Land Disturbing Activities as an
enforceable document of the UDO. As part of this change, the Stormwater Design Manual has been rewritten and incorporated these existing
requirements into the UDO, which includes a chapter dedicated to Erosion and Sediment Control design standards and requirements. This
UDO change will go into effect November 2, 2024.
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Section F: Post-Construction Site Runoff Controls
F.1 Program Narrative
The City's post-construction site runoff controls remain in compliance with the City's MS4 permit through the Neuse Nutrient Sensitive Waters
Management Strategy and Water Supply Watershed programs.
The City implements the Neuse Nutrient Sensitive Waters Management Strategy (15A NCAC 2B .0235)throughout the corporate limits and
ETJ area of Raleigh. Water Supply Watershed IV(WS-IV) Programs (15A NCAC 2H .0216) are implemented in the Falls Lake and Richland
Creek watersheds. A Water Supply Watershed III (WS-III) Program (15A NCAC 2B .0215) is implemented in the Swift Creek watershed.
The City's post-construction site runoff controls are deemed compliant with the implementation of the above-mentioned program measures.
The controls are enforced through the City Unified Development Ordinance (UDO) and Stormwater Design Manual, which are at least as
stringent as state requirements.
The City provides mechanisms to record deed restrictions and protective covenants to ensure ongoing maintenance of post-construction
stormwater control measures (SCMs). The City has also set up a private maintenance policy for owners of private properties with post-
construction SCMs. Every year, the private property owner must have a licensed professional engineer or landscape architect certify that the
SCM is functioning properly and must send that certification to the City. If these inspections and certifications are not made, then notification
and enforcement actions, including issuance of civil penalties, are taken. The maintenance activities required for each SCM are outlined in an
operation and maintenance plan, which is approved during the design review process.
The City also provides educational materials and training for developers on requirements for new development, redevelopment, and SCM
construction and maintenance.
F.2 Best Management Practices
Table F-1 includes a brief description of the Post-Construction Site Runoff Controls best management practices required by the MS4 permit,
the planned actions for the current and future fiscal years as described in the SWMP, the annual reporting metrics identified in the SWMP, and
the actual metrics for actions completed in FY2023-2024.
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Table F-1: Post-Construction Site Runoff Controls Metrics and Results
Permit FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Reference/BMP
Part II Section Review the UDO and Review UDO and Stormwater N/A, see reporting metrics in I N/A
F.2 (a) Stormwater Design Manual Design Manual annually and make SWMP Table 4 and Part II Section
Post- annually and make documents available for A of the permit
construction documents available to developers and construction site
stormwater developers and construction operators.
management site operators.
program Evaluate the program
Evaluate the program effectiveness annually and notify
effectiveness annually and the Water Quality Manager of
notify the Water Quality program modifications.
Manager of program
modifications.
Part II Section Maintain the UDO and Maintain the UDO and Stormwater Report number of sites with SCMs 1,324
F.2 (b) Stormwater Design Manual Design Manual so that the City
Strategies which so that the City requirements requirements are at least as Report number of sites where SCM 1,154
include SCMs are at least as stringent as stringent as the minimum inspections have been received
appropriate for the minimum requirements in requirements in 15A NCAC 02H Report SCM enforcement activities 139 NOVs issued;
the MS4 15A NCAC 02H .1000 and .1000 and make documents $185,000 in civil
make documents available to available to developers and penalties
developers and construction construction site operators.
site operators.
Review annually the SCM
Review annually the SCM Inspections Program Plan and
Inspections Program Plan update, if necessary.
and update, if necessary.
Implement SCM inspection and
Implement the SCM maintenance program.
inspection and maintenance
program. Evaluate the program
effectiveness annually and notify
Evaluate the program the Water Quality Manager of
effectiveness annually and program modifications.
notify the Water Quality
Manager of program
modifications.
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Permit FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Reference/BMP
Part II Section Develop covenant template Continue to develop covenant Verify that mechanisms such as I Plat maps and
F.2 (c) for single-owner SCMs. template for single-owner SCMs. recorded deed restrictions, plats, maintenance
Deed restriction and/or protective covenants are easements are
and protective Maintain recording Maintain recording mechanisms for provided so that development mechanisms utilized
covenants mechanisms for deed deed restrictions and protective activities maintain the project so that SCMs are
restrictions and protective covenants. consistent with approved plans maintained and
covenants. consistent with the
Evaluate the program approved plans
Evaluate the program effectiveness annually and notify
effectiveness annually and the Water Quality Manager of
notify the Water Quality program modifications.
Manager of program
modifications.
Part II Section Require submittal of Require submittal of operation and Report number of sites with newly 113
F.2 (d) operation and maintenance maintenance plan(s) prior to approved operation and
Operation and plan(s) prior to Certificate of certificate of occupancy issuance maintenance plans at time of plan
maintenance Occupancy issuance and and maintain records of each plan. review
plan maintain records of each
plan. Evaluate the program
effectiveness and notify the Water
Evaluate the program Quality Manager of program
effectiveness annually and modifications.
notify the Water Quality
Manager of program
modifications.
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Permit FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Reference/BMP
Part II Section Review annually developer Review annually developer training Report types of fact sheets, Web-based; Annual
F.2 (e) training and outreach and outreach materials and educational brochures, and other Inspection
Educational materials and update, as update, as needed. materials made available to requirements, As-
materials and needed. developers Built requirements,
training for Conduct training for developers. Outreach centered
developers Conduct training for around Stormwater
developers. Evaluate the program Design Manual
effectiveness annually and notify Update
Evaluate the program the Water Quality Manager of Report training events held for Quarterly
effectiveness annually and program modifications. developers and number of Development
notify the Water Quality participants Stakeholder
Manager of program Meetings held. At
modifications. these meetings,
Notify the Water Quality updates and
Manager of program stormwater training
modifications. given for all in
attendance. These
were held virtually
this past year and
averaged about 15
developer
representatives
attending per
quarterly meeting.
F.3 Program Elements
Table F-2 includes a brief description of additional Post-Construction Site Runoff Controls program elements required by the MS4 permit, the
planned actions for the current and future fiscal years as described in the SWMP, the annual reporting metrics identified in the SWMP, and the
actual metrics for actions completed in FY2023-2024.
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Table F-2: Post-Construction Site Runoff Controls Program Element Metrics and Results
Permit Y2024 Y2025 Reporting Metric(s) 2023-2024 Results
Reference/BMP
Part II Section Review annually the DEQ Review annually the DEQ Report whether UDO was updated (Y/N) Yes. Stormwater
F.3 model ordinance and model ordinance and Design Manual was
Design post- regulations for changes regulations for changes updated and
construction affecting the City's post- affecting the City's post- incorporated in UDO
practices that construction practices. construction practices. approved by Council
meet or exceed Incorporate and submit Incorporate and submit on September 3,
state rules revisions to DEQ for revisions to DEQ for 2024, and effective
approval, as needed. approval, as needed. November 2, 2024.
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of program Manager of program
modifications. modifications.
Part II Section Maintain SWMP Table 1, Maintain SWMP Table 1, N/A, see SWMP Table 2 and 4, and Part II N/A
F.4 which identifies City receiving which identifies City Section A.1. of the permit
Implement waters, including NSW and receiving waters, including
additional Water Supply Watershed NSW and Water Supply
requirements for designations. Watershed designations.
sensitive
receiving waters Implement the Neuse River Implement the Neuse River
Basin Nutrient Sensitive Basin Nutrient Sensitive
Waters Management Waters Management
Strategy throughout the City's Strategy throughout the
corporate limits and ETJ City's corporate limits and
area. Implement Water ETJ area. Implement Water
Supply Watershed rules in Supply Watershed rules in
designated watersheds. designated watersheds.
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually and
notify the Water Quality notify the Water Quality
Manager of program Manager of program
modifications. modifications.
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Reference/B M P
Part II Section Maintain UDO and Maintain UDO and N/A, see reporting metrics in Table 9 and N/A
F.5 Stormwater Design Manual Stormwater Design Manual 11 of the SWMP and Part II Section F.2
Meet post- and make documents and make documents (b) and Part II Section G.2 (g) of the
construction available all City available all City permit
requirements for Departments. Departments.
projects
performed by Review annually the Asset Review annually the Asset
permittee Management SCM Operation Management SCM
& Maintenance Plan and Operation & Maintenance Number of City projects approved for post- 8
update, if necessary. Plan and update, if
necessary. construction compliance
Implement SCMs and dams
asset management program. Implement SCMs and dams
asset management
Evaluate the program program.
effectiveness annually and
notify the Water Quality Evaluate the program
Manager of program effectiveness annually and
modifications. notify the Water Quality
Manager of program
modifications.
Part II Section Maintain UDO and Maintain UDO and N/A, see reporting metrics in SWMP Table N/A
F.6 Stormwater Design Manual Stormwater Design Manual 4 and 9 and Part II Section F.2 (b) and
SCM water and make documents and make documents Part II Section A.1 of the permit
quality design available for developers and available for developers
volume will construction site operators. and construction site
account for operators.
runoff at build Evaluate the program
out effectiveness annually and Evaluate the program
notify the Water Quality effectiveness annually and
Manager of program notify the Water Quality
modifications. Manager of program
modifications.
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Reference/B M P
Part II Section Document design Document design Report the number of linear projects with I 0
F.7 requirements for linear requirements for linear an approved design that will be conveyed
Non-NCDOT projects that will be conveyed projects that will be to NCDOT
linear to NCDOT demonstrating conveyed to NCDOT
transportation consistency with current City demonstrating consistency
projects meet practices. with current City practices.
post- Implement guidance for Implement guidance for
construction NCDOT projects. NCDOT projects.
requirements
Evaluate the program Evaluate the program
effectiveness and notify the effectiveness and notify the
Water Quality Manager of Water Quality Manager of
program modifications. program modifications.
F.4 Program Assessment
During FY2023-2024 the Stormwater Plan Review group maintained a full staff and continued to meet all permit requirements. The updates to
the Stormwater Design Manual were incorporated into the UDO on 9/3/2024 and will became effective on 11/2/2024. Staff continued to make
improvements to existing internal checklists and SOPs while approving more plans than the previous reporting year.
The SCM Inspections program has continued to grow and effectively improve their enforcement efforts in the past year. Staff have filled some
vacancies, and developed and implemented an enforcement SOP with dedicated staff to support this increase. Staff have also developed and
implemented multiple SOPs for core functions and processes to support program effectiveness. There is a current vacancy which has
contributed to the slower increase in total Annual Inspection Reports received by sites. Despite the staff vacancies and the increase in the
number of submittals, staff is maintaining a similar compliance rate citywide. Roughly 87% of sites have submitted acceptable reports this
reporting year compared to 90% last year. The program is advertising its open position and plans to expand program effectiveness and
operation through implementation of the developed SOPs and improved program data and tracking. Staff will continue to annually review the
program plan and assess overall workload and long-term staffing needs.
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Section G: Pollution Prevention and Good Housekeeping for Municipal Operations
G.1 Program Narrative
The Stormwater Management Division has developed and implemented a facility inventory, inspection program, Site Pollution Prevention Plans
(SPPPs) and Stormwater Pollution Prevention Plans (SWPPPs), spill response guidance, and staff training to prevent or mitigate pollution from
municipal facilities and operations.
The City also inspects and maintains municipally-owned SCMs and the storm sewer system to assess and maintain its condition.
G.2 Best Management Practices
Table G-1 includes a brief description of the Pollution Prevention and Good Housekeeping best management practices required by the MS4
permit, the planned actions for the current and future fiscal years as described in the SWMP, the annual reporting metrics identified in the
SWMP, and the actual metrics for actions completed in FY2023-2024.
Table G-1: Pollution Prevention and Good Housekeeping for Municipal Operations Metrics and Results
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section G.2 (a) Review the inventory Review the inventory Report inventory of 30 facilities; see Table G-2
Inventory of municipal facilities annually and update, as annually and update, as facilities determined to below
and operations needed, based on needed, based on have significant potential
changes in municipal changes in municipal for generating polluted
facilities and operations. facilities and stormwater runoff
operations.
Maintain and update Report number of Total: 72
inventory of municipally- Maintain and update municipal SCMs by type Wet Pond: 7
owned SCMs. inventory of UG Detention: 7
municipally-owned Swale: 1
Evaluate the program SCMs. Sand Filter: 3
effectiveness annually and Cistern: 0
notify the Water Quality Evaluate the program Permeable Pavement: 0
Manager of program effectiveness annually Level Spreader w/ Filter
modifications. and notify the Water Strip: 3
Quality Manager of Green Roof: 0
program modifications. Filterra: 13
Dry Pond: 8
Wetland: 7
Bioretention: 23
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Part II Section G.2 (b) Review annually the Asset Review annually the Report number of 84 facilities were inspected
Inspection and maintenance Management SCM Asset Management facilities inspected
program for municipal facilities Operations and SCM Operations and
and operations Maintenance Plan and Maintenance Plan and Report corrective actions SPPP have been developed for
Industrial Facility Industrial Facility taken at municipal 1 facility during this reporting
Inspection Program Plan Inspection Program facilities or operations year.
guidance and update, as Plan guidance and
needed. update, as needed. Six summary memoranda were
sent to facility contacts to
Inspect and document Inspect and document address corrective actions at a
municipal facility municipal facility total of ten facilities. SPPPs
inspections, including any inspections, including were updated, corrective
corrective actions. any corrective actions. actions were documented,
training completed, and
Evaluate the program Evaluate the program inspections resumed.
effectiveness annually and effectiveness annually
notify the Water Quality and notify the Water
Manager of program Quality Manager of
modifications. program modifications.
Part II Section G.2 (c) Review annually facility Review annually facility Report number of 30 facilities have
SPPPs for municipal facilities SPPPs/SWPPPs with SPPPs/SWPPPs with facilities within the City SWPPPs/SPPPs in complete
facility owning facility owning corporate limits with form.
departments and update, departments and SPPPs/SWPPPs
as needed. update, as needed.
Develop SPPPs/SWPPPs Develop
for newly identified SPPPs/SWPPPs for
facilities, if necessary. newly identified
facilities, if necessary.
Evaluate the program
effectiveness annually and Evaluate the program
notify the Water Quality effectiveness annually
Manager of program and notify the Water
modifications. Quality Manager of
program modifications.
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section G.2 (d) Review facility, operation, Review facility, Report number of spill 1
Spill response procedures for and Citywide spill operation, and Citywide response procedures
municipal facilities and response procedures and spill response developed/updated
operations update, if necessary. procedures annually
and update, as needed.
Notify the Water Quality
Manager of program Evaluate the program
modifications. effectiveness annually
and notify the Water
Quality Manager of
program modifications.
Part II Section G.2 (e) Review procedures for Review procedures for Report number of high 8
Prevent or minimize vehicle and equipment vehicle and equipment priority facilities
contamination of stormwater cleaning operations cleaning operations performing vehicle and
runoff from all areas used for annually and update, as annually and update, as equipment cleaning
vehicle and equipment cleaning needed. needed. operations
Report actions taken to Stormwater staff have
Evaluate the program Evaluate the program prevent or minimize inspected all facilities where
effectiveness annually and effectiveness annually stormwater runoff from vehicle and equipment cleaning
notify the Water Quality and notify the Water vehicle and equipment occur. SPPPs or SWPPPs have
Manager of program Quality Manager of cleaning been completed or are in final
modifications. program modifications. draft form for several facilities
that have and maintain oil/water
separators.
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Report number of Stormwater staff have
facilities with three or inspected all fire stations with
fewer fire trucks three or fewer fire trucks and
undergoing renovations ambulances during this
that will include structural reporting year. The City's
measures to prevent Stormwater Design Manual has
wash water from entering been updated and includes
the storm sewer system language to include structural
to the extent feasible measures to prevent wash
water from entering the MS4 at
all new facilities with three or
fewer fire trucks and
ambulances. No facilities are
undergoing renovation. One
new fire station is currently
being designed and will be
reviewed to meet the UDO by
Stormwater Plan Review staff
prior to approval.
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section G.2 (f) Document street, road, Document street, road, Report maintenance 8,781 miles of street were
Streets, roads, and public and public parking lot and public parking lot activities completed in the swept
parking lots maintenance BMPs in the MS4 BMPs in the MS4 previous fiscal year
Operation and Operation and
Maintenance Plan. Maintenance Plan.
Implement BMPs to Implement BMPs to
reduce polluted reduce polluted
stormwater runoff from stormwater runoff from
municipally-owned streets, municipally-owned
roads, and public parking streets, roads, and
lots. public parking lots.
Evaluate the program Evaluate the program
effectiveness annually and effectiveness annually
notify the Water Quality and notify the Water
Manager of program Quality Manager of
modifications. program modifications.
Part II Section G.2 (g) Review annually the MS4 Review annually the Report number of 71 City-owned regulatory
Inspection and Maintenance Operation and MS4 Operation and municipal SCMs compliance SCMs installed
(I&M)for municipally-owned or Maintenance Plan and Maintenance Plan and inspected prior to this reporting period
maintained stormwater control Asset Management SCM Asset Management have been inspected
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
measures (SCMs) and the storm Operation and SCM Operation and Report number of storm Number of bridges inspected:
sewer system. Maintenance Plan, and Maintenance Plan, and sewer conveyance 60
revise, as needed. revise, as needed. system components
inspected Number of crossline
Review annually the Asset Implement inspection conveyances
Management SCM and maintenance (culverts) inspected: 2,288
Operation and programs documented
Maintenance Plan, and in the MS4 Operation Linear footage of drainage
revise, as needed. and Maintenance Plan system that has had CCTV
and Asset Management inspection: 88,843
Establish service level SCM Operation and
agreements (SLAs)with Maintenance Plan. Linear footage of drainage
facility owning system that has had pole
departments address Review existing SLAs camera inspection: 323,554
shared ownership and and coordinate with
maintenance facility owning Number of catch basins
responsibilities and departments, if inspected: 1,336
outstanding maintenance necessary.
needs for SCMs located at Number of junctions inspected:
municipal facilities. 20
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Evaluate the program Report maintenance and Number of storm assets flushed
Review existing SLAs and effectiveness annually repair actions and/or vacuumed: 1,094
coordinate with facility and notify the Water Linear feet of stormwater pipe
owning departments, if Quality Manager of flushed and/or vacuumed:
necessary. program modifications. 35,530
Number of crossline
Implement inspection and conveyances (culverts)
maintenance programs maintained: 2,651
documented in the MS4 Number of inlet/junction tops
Operation and reset: 541
Maintenance Plan and Number of inlets/junctions
Asset Management SCM maintained: 765
Operation and Number of pipes
Maintenance Plan. repaired/replaced: 26
Linear feet or channels
Evaluate the program redefined: 2,012
effectiveness annually and Number of bridges repaired:
notify the Water Quality 7
Manager of program Number of culverts repaired:
modifications. 0
Number of catch basins
repaired: 166
Number of junctions repaired:
Replacements: 8
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section G.2 (h) Review annually and Review annually and Report types of training 145 City staff completed the
Staff training implement the Education, implement the provided and number of PPGH training module via the
Outreach, and Public Education, Outreach, staff who completed City's SuccessFactors portal
Involvement Plan, in and Public Involvement PPGH training
conjunction with Part II Plan, in conjunction
Section D.2 (d) in Table 7, with Part II Section D.2
which documents the (d) in Table 7, which
employee training documents the
program, including who employee training
should receive training, program, including who
types of training, and should receive training,
frequency. types of training, and
frequency.
Conduct employee training
and document attendance. Conduct employee
training and document
Evaluate the program attendance.
effectiveness annually and
notify the Water Quality Evaluate the program
Manager of program effectiveness annually
modifications. and notify the Water
Quality Manager of
program modifications.
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Table G-2: PPGH inventory of facilities that have significant potential to generate polluted stormwater runoff
Facility Name Facility Owning Department
Lake Woodard (PUD) Raleigh Water
Northeast Remote Operations (Burwell St) VFS/Parks
COR Paratransit Operations Facility Transportation
Downtown Remote Operations Engineering Services/Transportation
Raleigh Transit Operations Facility Go Raleigh
New Bern Avenue Maintenance Facility Raleigh Fire Department/Engineering Services
Solid Waste-Wilders Grove Service Center Solid Waste Services
Yard Waste Facility Solid Waste, Yard Waste Facility
Buffaloe Road Athletic Park Parks, Recreation and Cultural Resources
Walnut Creek Park North Parks, Recreation and Cultural Resources
Ridge Road Pool Parks, Recreation and Cultural Resources
Raleigh Fire Department Facility#1 Raleigh Fire Department
Mt. Herman Rd Operation Facility Transportation
Biltmore Hills Park Parks, Recreation and Cultural Resources
Millbrook-Exchange Park Parks, Recreation and Cultural Resources
Pullen Park Parks, Recreation and Cultural Resources
Optimist Park Parks, Recreation and Cultural Resources
Longview Pool Parks, Recreation and Cultural Resources
Neuse River Resource Recovery Facility Raleigh Water
E. M. Johnson Water Treatment Plant Raleigh Water
Raleigh Union Station Transportation
Bain Odor Control Station Raleigh Water
Lake Johnson Parks, Recreation and Cultural Resources
Dorothea Dix Park Parks, Recreation and Cultural Resources
Keeter Training Center Raleigh Fire Department
Marsh Creek Facility Parks, Recreation and Cultural Resources
Walnut Creek Odor Control and Pump Station Raleigh Water
Crabtree Creek Odor Control & Pump Station Raleigh Water
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Facility Name Facility Owning Department
Marsh Creek Odor Control Station Raleigh Water
Buffaloe Road Odor Control Station Raleigh Water
G.3 Program Assessment
Staff continue to meet PPGH permit requirements. Throughout the past reporting year, staff have completed more than 95 facility inspections,
which is a 23% increase from the previous year. All 30 City-wide high priority facilities were inspected at least once, with additional follow-up
inspection completed as necessary. Inspections of low priority and minimum exposure facilities were also completed this last year. Summary
memoranda were distributed for corrective action at ten facilities for identified deficiencies. All compliance concerns were resolved during this
reporting year.
Maintenance of City-owned SCMs has improved; the number of non-compliant individual SCMs decreased from 15 to 11 during this reporting
year. In addition, staff have engaged an outside maintenance contractor to help with regular maintenance and have increased the Stormwater
Utility Fee to fund the development of an internal SCM Maintenance crew. The contract with the outside contractor will be revised to align with
the NPDES MS4 reporting year to simplify reporting. This year, city-wide inventory tracking has expanded to include SCMs that are managed
by departments that do not have Service Level Agreements with the Stormwater Management Division.
Stormwater Maintenance staff will continue to review the data collected through inspections, repairs, and maintenance, and will work to analyze
it for trends or hotspots of drainage issues. Staff will also be examining inspection capacity and continue to develop the inspection group to
manage the growing maintenance and repair needs of the MS4 system.
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Section H: Program to Monitor and Evaluate Stormwater Discharges to Municipal
Systems
H.1 Program Narrative
The City maintains an inventory of permitted hazardous waste treatment, disposal, and recovery facilities; industrial facilities that are subject to
Section 313 of Title III of the Superfund Amendments and Reauthorization Act of 1986 (SARA); and industrial facilities identified with an
industrial activity permitted to discharge stormwater to the City MS4. The City's program prioritizes and inspects City-owned facilities with
NPDES Industrial Stormwater Permits annually and privately-owned facilities with NPDES Industrial Stormwater Permits at least once every
three years. Non-exposure sites permitted through DEQ are inspected once every permit cycle.
If significant non-compliance is found at a permitted facility or if compliance with the permit does not result in adequate control of pollutants to
the MS4, City staff will contact DEQ to report the issue. If significant non-compliance is found at a non-permitted facility, the City will take
enforcement action to resolve the problems leading to non-compliance.
H.2 Best Management Practices
Table H-1 includes a brief description of the Program to Monitor and Control Pollutants in Storm Water Discharges to Municipal Systems best
management practices required by the MS4 permit, the planned actions for the current and future fiscal years as described in the SWMP, the
annual reporting metrics identified in the SWMP, and the actual metrics for actions completed in FY2023-2024.
Table H-1: Program to Monitor and Control Pollutants in Storm Water Discharges to Municipal Systems Metrics and Results
Permit FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Reference/BMP
Part II Section Review at least once per permit cycle Review at least once per permit cycle the Report number of 77
H.2 (a) Maintain the industrial facility inventory and industrial facility inventory and update, as industrial facilities
an inventory of update, as needed. needed. identified within the
industrial City's corporate limits
facilities Evaluate the program effectiveness Evaluate the program effectiveness
annually and notify the Water Quality annually and notify the Water Quality
Manager of program modifications. Manager of program modifications.
Part II Section Review annually the Industrial Facility Review annually the Industrial Facility Report number of 77
H.2 (b) Inspection Program Plan and update Inspection Program Plan and update facility inspections
Inspection inspection guidance and checklists, if inspection guidance and checklists, if conducted
program necessary. necessary.
Identify program City-owned
Review inspections results and Review inspections results and identify priorities inspectedies—
identify program priorities, as needed. program priorities, if necessary. annually;
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Evaluate the program effectiveness Evaluate the program effectiveness Privately-owned
annually and notify the Water Quality annually and notify the Water Quality facilities - inspected
Manager of program modifications. Manager of program modifications. at least once every
three years;
Non-exposure sites
—inspected at least
once every permit
cycle
Part II Section Conduct inspection activities based on Conduct inspection activities based on Report number of 20
H.2 (c) Evaluate established procedures documented established procedures documented in deficiencies identified
industrial in City guidance and checklists. City guidance and checklists. and forwarded to DEQ
facilities Report number of illicit 2
discharging Evaluate the program effectiveness Evaluate the program effectiveness discharges identified at
stormwater to annually and notify the Water Quality annually and notify the Water Quality industrial facilities
the City's MS4 Manager of program modifications. Manager of program modifications.
H.3 Program Assessment
Staff continued to meet all permit requirements of the Program to Monitor and Control Pollutants in Storm Water Discharges to Municipal
Systems. All industrial sites located within the City's jurisdiction were evaluated by staff with at least one site visit that during this reporting
period. Each site visit was documented with an inspection report and representative photos. Inspections were performed in coordination with
NCDEQ staff at two facilities during this reporting period. Annual review and update of processes, forms and program effectiveness was
officially conducted in May 2024 and changes were annotated in each respective document. A self-audit was completed in June 2024 and did
not identify any gaps in compliance. Program enhancements included the implementation of a shared email account and calendar for more
efficient scheduling and tracking of potential compliance concerns and correspondence across the workgroup. Additionally, Power BI is being
utilized to track and visualize data needed for audit and reporting requirements. No substantial changes are scheduled to be implemented to
this program prior to issuance of a new permit.
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Section I: Water Quality Assessment and Monitoring
1.1 Program Narrative
The City has developed and implemented a Water Quality Assessment and Monitoring Plan that identifies monitoring locations, a monitoring
schedule, monitoring parameters, sample data analysis, and data evaluation and assessment.
1.2 Best Management Practices
Table I-1 includes a brief description of the Water Quality Assessment and Monitoring best management practices required by the MS4 permit,
the planned actions for the current and future fiscal years as described in the SWMP, the annual reporting metrics identified in the SWMP, and
the actual metrics for actions completed in FY2023-2024.
Table I-1: Water Quality Assessment and Monitoring Metrics and Results
Permit FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Reference/BMP
Part II Section 1.2 (a) Review annually the Review annually the Report updates and Updated appendices to include
Water Quality Water Quality Water Quality revisions to the Water safety sheets for field sample
Assessment and Assessment and Assessment and Quality Assessment and collection, staffing updates, and
Monitoring Plan Monitoring Plan and Monitoring Plan and Monitoring Plan and the date the procedure for downloading and
update, as needed. update as needed. submitted to DEQ, if storing data.
applicable
Evaluate the program
effectiveness annually Evaluate the program
and notify the Water effectiveness annually
Quality Manager of and notify the Water
program modifications. Quality Manager of
program modifications.
Part II Section 1.2 (b) Conduct water quality Conduct water quality Report number of stream 18
Water quality monitoring and data monitoring and data sites monitored
monitoring evaluation as evaluation, as
documented in the Water documented in the Water
Quality Assessment and Quality Assessment and
Monitoring Plan. Monitoring Plan.
Report number of samples 1,014
Provide the current Provide the current collected
Water Quality Water Quality
Assessment and Assessment and
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Permit FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Reference/BMP
Monitoring Plan to DEQ, Monitoring Plan to DEQ, Report parameters analyzed Total suspended solids, ammonia,
if revised. if revised. total Kjeldahl nitrogen,
nitrate/nitrite, total nitrogen (sum of
Evaluate the program Evaluate the program TKN and NO3/NO2, not collected
effectiveness annually effectiveness annually in the field), calcium, copper,
and notify the Water and notify the Water magnesium, total phosphorus,
Quality Manager of Quality Manager of zinc, total hardness, turbidity, E.
program modifications. program modifications. coli
Section 1.3: Program Assessment
The Water Quality Assessment and Monitoring program continues to fulfill permit requirements and identify opportunities for enhancement. Staff
reviewed and updated the Assessment and Monitoring Plan on June 5, 2024. Changes were made to reflect updated field safety procedures and
staffing changes. A new full-time employee was hired to support water quality monitoring and increase capacity for field sampling and program
coordination. Program elements (sampling schedule and Plan updates) were further evaluated during an internal self-audit on June 25, 2024.
Staff conducted ambient water quality sampling at Raleigh's eighteen long-term monitoring stations following the schedule outlined in the Plan.
1014 samples were collected;this change from the previous reporting period is due to four sampling events(typical)occurring during the reporting
period whereas five sampling events occurred last year due to a delay with the lab contract process. During this reporting period, a new agreement
was established with Raleigh Water for laboratory analysis of grab samples. The memorandum of understanding (MOU) was established to
leverage internal expertise and resources, expedite turn-around time for sample analysis, and increase efficiency.
Analysis of monitoring data showed two stations (Pigeon House Branch and Rocky Branch) displayed the highest total nitrogen (TN) values as
compared with the other sixteen monitoring stations.These watersheds are highly urbanized and therefore susceptible to impacts from pet waste,
fertilizer, and other sources of nitrogen. There appears to be support for statistically higher spring TN values when seasonality was considered
(adjusted p-value of 0.0008). Beyond permit requirements, the City is currently conducting watershed studies in both Pigeon House Branch and
Rocky Branch watersheds, including additional targeted public education and engagement,stream condition assessment via stream walks,water
quality modeling, and identification of potential opportunities for capital investments in green stormwater infrastructure and stream restoration.
Crabtree Creek and Little Brier Creek have previously reported higher concentrations of Total Suspended Solids (TSS) and turbidity compared
with other stations; this trend continues for this reporting year, though all turbidity values fell below the State standard of 50 NTUs this year(Little
Brier Creek reported a value slightly higher than the State standard in June 2023). Monitoring stations in Crabtree Creek and Little Brier Creek
also displayed higher concentrations of TP relative to other monitoring stations. Soil erosion can be a major contributor of TSS and phosphorus
to streams. The City is currently partnering on a multi-year study with the US Geological Survey(USGS)to model streambank erosion City-wide.
E. coli data displayed no significant seasonal trend (P-value .211). North Carolina does not currently have a regulatory standard, stream
standard, or health advisory standard for E. coli. Instead, a fecal coliform stream standard is used. Because bacteria levels naturally fluctuate,
results from multiple fecal coliform sampling events are used to determine a waterbody's water quality over an extended period of time (e.g.,
month). There is no State health advisory standard for bacteria that provides an instantaneous health risk advisory determination for
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freshwater. Pigeon House Branch has an assigned TMDL for fecal coliform bacteria and the City plans to prioritize conducting fecal coliform
bacteria (including e. coli) source tracking in Pigeon House Branch during the next permit cycle as part of the Pigeon House Branch TMDL
implementation plan. Staff have partnered with the USGS on a proposal to assess fecal contaminant presence, sources, and transport through
the Walnut Creek watershed.
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Section J: Total Maximum Daily Loads
J.1 Program Narrative
The following TMDLs within Raleigh's MS4 service area (corporate limits of the City of Raleigh) are noted in Section 2.5 and Table 2 of the
SWMP:
• Falls Lake
• Neuse River Estuary
• Pigeon House Branch
• Perry Creek
The Falls Lake and Neuse River Estuary are managed through 4B Management Plans approved by the EPA and overseen by the North
Carolina Department of Environmental Quality (NCDEQ). The City is addressing the requirements of the 4B Management Plan through its
implementation of the Nutrient Sensitive Waters Management Strategy and City ordinances adopted as required by State of North Carolina
Neuse Nutrient Strategy Rules.
The EPA has assigned a TMDL to Pigeon House Branch for historical exceedances of copper and fecal coliform and to Perry Creek for
biological integrity. The City of Raleigh has not been assigned a specific numerical Waste Load Allocations (WLA)for these respective
pollutants of concern. Per Part II.J.4, the City has developed TMDL Implementation Plans for both of these watersheds documenting evaluated
and tailored strategies and BMPs to address the pollutants of concern.
J.2 Best Management Practices
Table J-1 includes a brief description of the best management practices required by the MS4 permit, the planned actions for the current and
future fiscal years as described in the SWMP, the annual reporting metrics identified in the SWMP, and the actual metrics for actions completed
in FY2023-2024.
Table J-1: TMDL Metrics and Results
Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section J.3 (a) Continue to monitor Continue to monitor Report TMDLs with WLAs within the N/A
Identify, describe, and TMDL development. TMDL development. MS4
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
map watershed, outfalls, If a TMDL is If a TMDL is Report changes in outfall inventory that N/A
and streams developed that developed that may be contributing to impairment of
assigns an individual assigns an individual identified streams
numeric WLA to the numeric WLA to the
City, evaluate City MS4, evaluate
strategies and tailor strategies and tailor
SWMP BMPs to SWMP BMPs to
address the address the
pollutants of concern pollutants of concern
and associated and associated
TMDLs and develop TMDLs and develop
a TMDL Plan. a TMDL Plan.
Part II Section J.3 (b) Continue to monitor Continue to monitor N/A, Report pollutants of concern and I N/A
Evaluate existing TMDL development. TMDL development. measures taken for reduction
measures If a TMDL is If a TMDL is
developed that developed that
assigns an individual assigns an individual
numeric WLA to the numeric WLA to the
City, establish City MS4, establish
measures for measures for
identifying and identifying and
reducing pollutants of reducing pollutants of
concern to the MEP. concern to the MEP.
Part II Section J.3 (c) Continue to monitor Continue to monitor N/A, Report monitoring data summary N/A
Assessment of available TMDL development. TMDL development. and data trends
monitoring data If a TMDL is If a TMDL is
developed that developed that
assigns an individual assigns an individual
numeric WLA to the numeric WLA to the
City, review and City MS4, review and
assess monitoring assess monitoring
data. data.
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section J.3 (d) Continue to monitor Continue to monitor N/A, Report updates to monitoring plan N/A
Monitoring Plan TMDL development. TMDL development.
If a TMDL is If a TMDL is
developed that developed that
assigns an individual assigns an individual
numeric WLA to the numeric WLA to the
City, develop TMDL City MS4, develop
monitoring plan for TMDL monitoring
applicable assigned plan for applicable
NPDES regulated assigned NPDES
WLA. regulated WLA.
Part II Section J.3 (e) Continue to monitor Continue to monitor N/A, Report additional measures taken N/A
Additional Measures TMDL development. TMDL development.
If a TMDL is If a TMDL is
developed that developed that
assigns an individual assigns an individual
numeric WLA to the numeric WLA to the
City, establish City MS4, establish
programs and programs and
measures to be measures to be
implemented within implemented within
the City's MS4 permit the City's MS4 permit
program that are program that are
designed to achieve designed to achieve
the assigned MS4 the assigned MS4
NPDES regulated NPDES regulated
WLA and to reduce WLA and to reduce
the TMDL pollutant of the TMDL pollutant of
concern to the MEP concern to the MEP
within the watershed within the watershed
to which the TMDL to which the TMDL
applies. applies.
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section J.3 (f) Continue to monitor Continue to monitor N/A, Report achievement of schedule N/A
Implementation Plan TMDL development. TMDL development. milestones
If a TMDL is If a TMDL is
developed that developed that
assigns an individual assigns an individual
numeric WLA to the numeric WLA to the
City, establish a City MS4, establish a
schedule to address schedule to address
the NPDES WLA the NPDES WLA
pollutant of concerns pollutant of concerns
Part II Section J.3 (g) Continue to monitor Continue to monitor N/A, Report successes N/A
Incremental Success TMDL development. TMDL development.
If a TMDL is If a TMDL is
developed that developed that
assigns an individual assigns an individual
numeric WLA to the numeric WLA to the
City, track successes City MS4, track
per the plan. Review successes per the
and update as plan. Review and
needed update as needed
Part II Section J.3 (h) Continue to monitor Continue to monitor N/A, Report annual assessment N/A
Reporting TMDL development. TMDL development. outcomes
If a TMDL is If a TMDL is
developed that developed that
assigns an individual assigns an individual
numeric WLA to the numeric WLA to the
City, prepare an City MS4, prepare an
assessment of assessment of
activities and data activities and data
analysis for the analysis for the
TMDL watershed TMDL watershed
plan plan
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Permit Reference/BMP FY2024 FY2025 Reporting Metric(s) 2023-2024 Results
Part II Section J.4. If no Develop Watershed Complete Report the development/maintenance of I TMDL plans for Pigeon House
MS4 NPDES regulated Action Plans for development of the Watershed Action Plans and Branch and Perry Creek watershed
waste load allocation Pigeon House Watershed Action modifications, if necessary have been developed.
(WLA) is specified in the Branch and Perry Plans for Pigeon Implementation is underway.
TMDL Creek that include House Branch and
strategies and tailor Perry Creek that
BMPs to address the include strategies
POC in the and tailor BMPs to
watersheds. address the POC in Report BMPs implemented Implemented BMPs are detailed in
the watersheds. each respective TMDL
Implement the Implementation Plan and are
Watershed Action Implement the available upon request.
Plans. Watershed Action
Plans.
Evaluate the program
effectiveness Coordinate with the
annually and notify Department of Water
the Water Quality Resources to
Manager of program integrate the Pigeon
modifications. House Branch and
Perry Creek
Watershed Action
Plans into the DEQ
StoryMap format, as
staff and resources
are available within
DEQ.
Evaluate the program
effectiveness
annually and notify
the Water Quality
Manager of program
modifications.
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J.3 Program Assessment
The City of Raleigh has developed TMDL Implementation Plans for Pigeon House Branch and Perry Creek that document the evaluation of
strategies to tailor and expand BMPs within the scope of the six MCMs (the development of Watershed Action Plans (WAP) as an acceptable
alternative approach to TMDL implementation plans are no longer necessary nor under consideration). In addition, the City has identified
strategies beyond minimum control measures to improve water quality and address pollutants of concern. Staff continue to coordinate with
NCDEQ on sampling efforts that may impact the copper TMDL in Pigeon House Branch watershed.
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Section K: Annual Assessment and Annual Summary
This section assesses overall compliance with the permit during the FY2023-2024 reporting period and
documents identified program improvements that will be implemented in FY2024-2025, including potential
changes to the SWMP as may be required by issuance of the new permit.
K.1 Assessment
During the 2023-2024 reporting period, City staff continued to develop and improve program components
required by the City's MS4 permit. City staff completed a self-audit and gap analysis in June 2024 utilizing
the NCDEQ Self-Audit template and generated an executive summary for review by City management.
During this exercise, staff reviewed all programs, conducted eight site visits, and documented that the
City is meeting and/or exceeding all permit requirements. Opportunities for continuous improvement in
program areas were identified and recommendations were made to further tailor programs in anticipation
of the issuance of the new permit. Specific findings from completed assessments have been summarized
at the end of each section in this report.
K.2 Program Improvements
Following the June 2024 self-audit, the SWMP was reviewed, and minor updates made to the tabular
schedules to ensure continuance and completion of annual tasks. Significant changes to program
strategies and reporting metrics were not necessary; changes are anticipated upon issuance of the new
permit. The updated SWMP serves as an effective mechanism to track all required activities and related
metrics throughout the permit year. The updated SWMP was signed by the Stormwater Program Manager
in July 2024 and the changes made did not necessitate submittal to NCDEQ.
A concise summary of achievements and assessment of data for each MCM, as required by the SWMP,
is outlined in each section of the annual report. These summaries describe and assess staff effort,
program effectiveness, and changes and improvements implemented during the reporting period.
Generally, program metrics were comparable to previous reporting years, with several program
enhancements highlighted. Filled vacancies, position reclassification, and new positions added this
reporting period helped promote timely fulfillment of compliance activities, and in some cases
expansion/increase of compliance metrics.
The City completed annual review and maintenance of all legal authorities to effectively meet permit
requirements. The Stormwater Design Manual update and acceptance by City Council was a significant
milestone for the City during the last reporting year. The revisions required subsequent updates to
Raleigh's Uniform Development Ordinance (UDO). These changes are applicable for development plans
submitted after November 2, 2024. Enforcement actions by staff within the Illicit Discharge Detection and
Elimination, Construction Site Runoff Controls, and Post-Construction Site Runoff Controls programs
have been adequate to achieve compliance with regulations outlined by the permit and UDO.
K.3 2023-2024 Program Initiatives
This next reporting year will bring changes to the City of Raleigh Stormwater Program. Issuance of a new
MS4 permit by NCDEQ is pending. A revised SWMP will be required to be submitted to NCDEQ for
review within 12 months of issuance. Upon approval of the SWMP, program plans across the MCMs will
be updated to correspond with the new permit language. Stormwater staff have engaged with a
consulting firm to complete these pending tasks within the compliance schedule.
Rev. 8.1.2022 90

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Staff will begin implementation of the newly developed TMDL Implementation Plans in both Pigeon House
Branch and Perry Creek watersheds. In addition, watershed studies will continue in Pigeon House
Branch, Walnut Creek and Marsh Creek watersheds as the City moves towards development of a City-
wide modeling tool to inform future initiatives. Lastly, the City will also continue to engage other MS4
communities within North Carolina to share resources and further develop strategies to improve
management of stormwater in the City of Raleigh.
Rev. 8.1.2022 91