NCS000245_MS4 Annual Report (Other)_20231027

•
4.
'\ / /�a` s sky t '` , kl K, 't.. ,Yii -74. :. '7n1 .?! A' - v a
WO 1
•
•
'.--,...,s-,..,.------":„ ,/,‘ .'''''''',,,___T...6.-...11 : '''',0t1' -1' '';':.'d•H I.:PC'''.i' ''''''' '1:::':-L4....:111111'.;1
-
t J. c 4;� ^f, • S "`1 . /yy{d.�py.�1 // '` r.
.� ° tip`' '�...!>� � I
ti
___
_ _,. . fir, ,....„ - ,t• ,41. .,
,.....„../...7470
34141
•
\4� tom.^t In- �- _ '-~ - -
f •t 1 1 +• _ _ • Ji
. ..„,. .. ,44". _
_ --...., -- , i-- --'-'-- ' . . • . ,. ..,),..z...,.::-.•;;,,l,„, _ r .„.,.,.
j; _�• t '
Chi " -1k, V Ar _, . `.?+ s.__ tT '.
NPDES MS4 Permit
Annual Report
October 1 , 2022 - September 30, 2023
Permit No. NCS000245
Prepared under the direction of S. Wayne Miles, PE, Stormwater Program Manager
Mill61% 0� Ralei h
raleigh %%k% %1 • g
,o' Stormwater
L

( )
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 26
C.1 Program Narrative 26
C.2 Best Management Practices 26
C.3 Program Assessment 28
Section D: Illicit Discharge Detection and Elimination 29
D.1 Program Narrative 29
D.2 Best Management Practices 29
D.3 Program Assessment 52
Section E: Construction Site Runoff Controls 53
E.1 Program Narrative 53
E.2 Best Management Practices 53
E.3 Program Assessment 57
Section F: Post-Construction Site Runoff Controls 58
F.1 Program Narrative 58
F.2 Best Management Practices 58
F.3 Program Elements 62
F.4 Program Assessment 65
Section G: Pollution Prevention and Good Housekeeping for Municipal Operations 66
G.1 Program Narrative 66
G.2 Best Management Practices 66
G.3 Program Assessment 74
Section H: Program to Monitor and Evaluate Stormwater Discharges to Municipal Systems 74
Rev. 8.1.2022 2

(I.11
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
H.1 Program Narrative 74
H.2 Best Management Practices 74
H.3 Program Assessment 75
Section I: Water Quality Assessment and Monitoring 76
I.1 Program Narrative 76
I.2 Best Management Practices 76
I.3: Program Assessment 77
Section J: Total Maximum Daily Loads 79
J.1 Program Narrative 79
J.2 Best Management Practices 79
J.3 Program Assessment 84
Section K: Annual Assessment and Annual Summary 85
K.1 Assessment 85
K.2 Program Improvements 85
K.3 2023-2024 Program Initiatives 85
Rev. 8.1.2022 3

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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.
S. Wayne M es, PE
Stormwater Program Manager
City of Raleigh
Rev.8.1.2022 4

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Introduction
This report describes programs and activities undertaken during the period of October 1, 2022, through
September 30, 2023, 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.A.1 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
Rev. 8.1.2022 5

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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 updated, put out for public comment, and submitted to NCDEQ.
These changes included general program updates limited to FY 24-27 schedules, minor revisions to several reporting metrics to remove
ambiguity, and narrative updates in respective program sections. In addition, program elements for Post-Construction Site Runoff Controls
were expanded to incorporate Part II Sections F. 3-7 of the permit. The annual report template has also been updated since the last report in
October 2021 to better correspond with our updated SWMP.
Currently, the total number of Full Time Employees (FTEs) associated with MS4 permit program implementation for FY2024 is 142, with 79
FTEs with the Stormwater Management Division in the Engineering Services Department and 63 FTEs with 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
The City's Stormwater Management Division 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. Grant funding is also routinely pursued, and when awarded, is utilized to augment the annual budget. 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 (fiscal year from July 1, 2022, through June 30, 2023)was sufficient to meet
program needs and implement the requirements of the MS4 permit. The total budget for FY2023 was $35,241,434, and Capital Improvement
Program total budget for FY2023 was $11,393,950 (see Table A-1).
The City increased the stormwater utility fee by 2.5%for FY2024 (fiscal year from July 1, 2023, through June 30, 2024) based on the
determined need for additional personnel, increased operations and Capital Improvement Program needs, and project cost escalation. The
total budget for the City's Stormwater Program for FY2024 is $37,672,530. The budget funds annual operations and the Capital Improvement
Program. The adopted Capital Improvement Program budget for the City's Stormwater Program for FY2024 is $13,128,000.
Rev. 8.1.2022 6

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Table A-1: FY2023 Stormwater Program Capital Improvement Program Budget
Stormwater Program Category FY2023 CIP Budget
J
Neighborhood Drainage System Improvements $1,250,000
General Drainage Infrastructure $3,023,950
Asset and Watershed $2,250,000
Water Quality/GSI Projects $2,540,000
Stream Restoration and Water Quality $500,000
Flood Hazard Mitigation and Flood Early Warning $950,000
City SCMs and Dams Program $880,000
Total $11,393,950
Rev.8.1.2022 7

$C4
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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 FY2022-2023.
Table A-2: Program Implementation Metrics and Results
Program Element FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section A Complete annual review Complete annual review Report type of assessment Voluntary self-audit
The program will be with NCDEQ or conduct a with NCDEQ or conduct a completed completed May 2023; 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 Article 9.2 of the
The permittee will maintain ordinances, policies, and regulations, ordinances, regulations, ordinances, UDO to reflect changes in
adequate legal procedures and update, if policies, and procedures policies, and procedures the readopted Neuse
mechanism, such as necessary. annually and update, as Nutrient Strategy
regulations, ordinances, needed. Stormwater Rule (15A
policies, and procedures to NCAC 02B .0711)
implement all provisions of
the SWMP.
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, 3, & I-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 report section
program components. of the SWMP.
Rev. 8.1.2022 8

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Program Element FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
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 March 10, 2023 and
to keep the SWMP up to as needed. as needed. to NCDEQ upon request submitted to NCDEQ on
date with annual updates if March 13, 2023.
any changes are
warranted. Updates included:
•General program updates
limited to FY 24-27
schedules, minor revisions
to several reporting metrics
to remove ambiguity, and
minor narrative updates in
respective program
sections.
•Updated organizational
chart
•Updates to the receiving
waters to reflect the most
recent EPA-approved DEQ
Final 303(d) List, replacing
an older list from 2018.
•Expanded Table 10.
Program Elements for
Post-Construction Site
Runoff Controls to
incorporate Part II Sections
F. 3-7 of the permit.
Rev. 8.1.2022 9

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Program Element FY2023 FY20. Reporting Metric(s) 2022-2023 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 NCDEQ 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.
Rev.8.1.2022 10

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Section B: Public Education and Outreach
B.1 Program Narrative
The City develops and uses media and other outreach methods to educate the public on the causes and impacts of stormwater pollution,
including utility bill inserts, newsletters, webpages, articles, social media, workshop presentations, classroom education events, and TV and
radio campaigns. In addition, the City participates in the Clean Water Education Partnership (CWEP), which provides videos, online resources,
and printed materials to its members and produces a widespread multi-media campaign that features television public service announcements,
radio public service announcements, and a stormwater informational website (www.nc-cleanwater.org).
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 FY2022-2023.
Table B-1: Public Education and Outreach Program Metrics and Results
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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.
Rev. 8.1.2022 11

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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 414,500 page views for
Informational website stormwater program webpage. stormwater program to Stormwater the Stormwater
webpage. Management Division Management main site;
Evaluate program main site and SWMP 731 page views for the
effectiveness and notify the Evaluate program webpage SWMP webpage
Water Quality Manager of effectiveness annually and
program modifications. notify the Water Quality
Manager of program
modifications.
Rev. 8.1.2022 12

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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
Plan. Provide CWEP annual
Participate in CWEP activities report
and events. Participate in CWEP
activities and events.
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: 136
hotline(s)or helpline(s) receive public complaints. share information and stormwater Utility fee: 99
receive public complaints. administration helpline Plan review: 262
Evaluate the program by type of call Volunteer: 19
effectiveness annually and Evaluate the program Illicit discharge: 91
notify the Water Quality effectiveness annually and Active
Manager of plan and/or notify the Water Quality construction:118
program modifications. Manager of plan and/or Capital projects:20
program modifications. Utility billing: 16
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
Rev. 8.1.2022 13

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
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
Rev.8.1.2022 14

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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, 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
Rev. 8.1.2022 15

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Target Target Pollutant Pollutant Sources Target Audiences Target Audiences
Pollutant Justification Justification
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; pet/animal general public and private sewer plumbing
waste; unhoused populations and connections and/or
responsible for properly
disposing of pet/human waste,
municipal government
responsible for most sanitary
sewers, general public
observes activities at pollutant
sources
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 Count Types of Educational Materials
(#materials equals#attendees)
10/06/2022 Stormwater Management Advisory 30
Commission October Meeting
10/08/2022 Fall Rain Garden & Rain Barrel 13 Rainwater Rewards, IDDE, CWEP Big Six
Workshop Pollution Brochure
10/22/2022 Drop in Foster a Stream Cleanup 70
10/30/2022 Community Garden Event at Cross 40 Raleigh Rainwater Rewards
Link Road
11/01/2022 City Council Presentations on 200
Stream Stabilization and Drainage
Assistance Policies
Rev.8.1.2022 16

°C ;$
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Date Description of Event/Activity Attendee & Material Count Types of Educational Materials
(#materials equals#attendees)
11/01/2022 FEWS Demo to US Army Corp of 5
Engineers
11/02/2022 Pigeon House Watershed Public 32 Volunteer Opportunities, Stream Monitoring,
Meeting Commercial and Residential Raleigh Rainwater
Rewards, Paint Disposal Practices, Sediment
Pollution, General Pollution Prevention
11/03/2022 Stormwater Management Advisory 33
Commission November Meeting
11/03/2022 Western North Ridge Stormwater 25
Improvement Project and Mitigation
Bank Feasibility Study Presentation
11/03/2022 GeoSpray Polymer Presentation 17
11/04/2022 Native Plants for Stream 25
Restorations
11/05/2022 Fall Volunteer Stream Monitoring 8
Workshop
11/08/2022 NCSU AEC 40 and beyond 14
Academia Panel Discussion
11/08/2022 Glenbrook/Dacian Public Meeting 4
11/14/2022 Five Points Community Meeting 25
11/15/2022 IDDE Presentation 8
11/16/2022 GIS Day 100
12/03/2023 Biltmore Hills Stream Cleanup 9
12/08/2023 Stormwater Management Advisory 30
Commission December Meeting
Rev. 8.1.2022 17

°C ;$
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Date Description of Event/Activity Attendee & Material Count Types of Educational Materials
(#materials equals#attendees)
12/28/2022 Stormwater Smart Newsletter Winter 4,827
Edition
01/05/2023 Stormwater Management Advisory 40
Commission January Meeting
01/05/2023 IDDE Presentation to the 40
Stormwater Advisory Commission
and attendees
01/09/2023 Five Points Community Meeting — 15
Volunteer opportunities and R-3
Program
02/02/2023 Stormwater Management Advisory 20
Commission February Meeting
02/02/2023 Your Service Connection Utility Bill 196,000
Insert= Sediment Pollution and
IDDE Article
02/10/2023 Stream Stabilization Workshop 40
02/13/2023 Stormwater Billing Notification 101 Fee Brochures
Letters and Fee Brochures
02/18/2023 Rainwater in Your Yard Presentation 20 Rainwater Rewards and Drainage Assistance
at Biltmore Hills Community Center Brochures
03/02/2023 Stormwater Management Advisory 33
Commission March Meeting
03/08/2023 NCSU EV 101 Spring Semester 15
Presentation at Wooten Meadow
Park
03/08/2023 UNC-CH ENEC 204 Environmental 8
Seminar at UNC Chapel Hill Murry
Hall
03/08/2023 NCSU 2023 Equity Research 15
Symposium/Round Table
Discussion/Walnut Creek Watershed
@ NCSU Talley Student Union
03/15/2023 Stormwater Smart Newsletter Spring 4879
2023 Edition
03/16/2023 24th Annual Raleigh Small Business 450
Expo Workshop
Rev. 8.1.2022 18

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Date Description of Event/Activity Attendee & Material Count Types of Educational Materials
(#materials equals#attendees)
03/16/2023 Raleigh Stormwater University-The 20
History of Raleigh Stormwater
03/18/2023 Spring Rain Garden Rain Barrel 4
Workshop at Walnut Creek Wetland
Park (WCWP)
03/21/2023 Spotswood Drive Public Meeting at 4 CWEP Big Six Pollution, Rain Barrel, Rainwater
Durant Nature Preserve Rewards Residential, Stream Stabilization
Brochures
03/24 &25/2023 Raleigh Water and Transportation 52 Volunteer Opportunities, Stormwater Pollution,
Field Services Job Fair Flooding Risk Stormwater Fee Brochures
03/25/2023 Creek Week Stream Clean Up at 42
Marsh Creek Park
03/25/2023 Arbor Day Event at Chavis Park 118 CWEP Big Six Pollution, Rainwater Rewards
Residential, R3 Rack Card, Stream Stabilization,
Volunteer Opportunities, Stormwater Pollution
Card, Rain Barrel, Drainage Responsibility,
Scoop the Poop Card/ Brochures
04/06/2023 Stormwater Management Advisory 29
Commission April Meeting
04/11/2023 Clean Transportation Demonstration 1
Day
04/17/2023 Earth Day Event Communication 4,528
Announcement
04/20/2023 Raleigh Developer Webinar- 100
Submitting Nutrient Calculations to
the City
04/21/2023 Earth Day Event at Dix Park 225 Rainwater Rewards Brochure, English and
Spanish, Flood Risk, Drainage Responsibility,
Stream Stabilization, Volunteer Opportunities
Spanish and English, Rain Barrel _
04/21/2023 Environmental Awards Event at Dix 225
Park
04/22/2023 Our Creek—Our Community Festival 31
04/24/2023 FEWS Virtual Presentation 50 CWEP English and Spanish Big Six Pollution
Brochure, R-3 Residential, Fertilizer Pollution,
Sediment Pollution, Nutrient Pollution, Stream
Rev. 8.1.2022 19

SCS
NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Date Description of Event/Activity Attendee & Material Count Types of Educational Materials
(#materials equals#attendees)
Stabilization, Stormwater English and Spanish
Pollution Prevention, Rain Barrel, Capture it!
Contest, Brochures
04/26/2023 Upper Durant Public Meeting 26 Capture it! Contest, CWEP Big Six, Drainage
Wetland Conversion Responsibility, Rain Barrel, Rainwater Rewards
Residential
04/27/2023 Camp Pond Dam Public Meeting 27 Volunteer Opportunities, Drainage Responsibility,
Flood Risk, Rain Barrel, Rainwater Rewards-
Residential, Stream Stabilization Brochures
04/29/2023 Songbird Festival at Blue Jay Point 219 CWEP Big Six Pollution, Capture it! Contest,
County Park Rain Barrel, Rainwater Rewards, Residential
Brochures
04/29/2023 Spring Stream Monitoring Workshop 7
at WCWP
05/06/2023 Stormwater Management Advisory 32
Commission May Meeting
05/08/2023 Teacher Appreciation Week 4,546
Communication email
05/09/2023 ASFPM Conference and Tour 60
Alluvial Decoders at Raleigh
Convention Center
05/10/2023 FEWS Presentation at ASFPM 80
Conference at Raleigh Convention
Center
05/11/2023 Millbrook Exchange Park Stream 12 CWEP Big Six Pollution, Drainage Responsibility,
Project Public Meeting Flood Risk, Nutrient Pollution, Stormwater
Pollution Prevention, Rain Barrel, R-3 Process,
Rainwater Rewards Residential, R-3 Rack Card,
Sediment Pollution, Stormwater Fee, Stream
Stabilization Brochures
05/15/2023 Stormwater Billing Notification 58 Fee Brochures
Mailing and Fee Brochures
05/19/2023 FEWS Presentation &Tour to City 30
Council
Rev. 8.1.2022 20

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Date Description of Event/Activity Attendee & Material Count Types of Educational Materials
(#materials equals#attendees)
05/31/2023 Stormwater Billing Notification 38 Fee Brochures
Mailing and Fee Brochures
06/01/2023 Stormwater Management Advisory 30
Commission June Meeting
06/01/2023 FEWS Presentation to the 30
Stormwater Management
Commission
06/15/2023 Stormwater Billing Notification 248 Fee Brochures
Mailing and Fee Brochures
06/23/2023 Flood Awareness Mailing 96
06/23/2023 Stormwater Smart Summer 5,006
Newsletter
06/29/2023 Engineering for the 21st Century 12
summer career education program
at WCWP
07/10/2023 Water Quality Mini Workshop for 10
Parks and Rec Summer Staff at Dix
Park
07/15/2023 Homeownership Information Fair at 200 Drainage Responsibility and Stream Stabilization
Carolina Pines Community Center Brochures
07/18/2023 Pigeon House Watershed Pop-up 16
Public Meeting at Tarboro Rd.
Community Center
07/19/2023 Stormwater Billing Notification 8 Fee Brochures
Mailing and Fee Brochures
07/19/2023 Wake Envirothon Presentation for 7
High School Students at WCWP
07/20/2023 Rocky Branch/Walnut Creek 42
Watershed Public Meeting at WCWP
07/20/2023 Raleigh Stormwater University 65
Webinar-Green Stormwater
Infrastructure
Rev. 8.1.2022 21

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Date Description of Event/Activity Attendee & Material Count Types of Educational Materials
(#materials equals#attendees)
07/21/2023 Concrete Power Washing Pollution Three social media posts on social
Social Media Campaign media accounts, 1587 total views
07/31/2023 Stormwater Billing Notification 104 Fee Brochures
Mailing and Fee Brochures
08/03/2023 Stormwater Management Advisory 49
Commission August Meeting
08/08/2023 Pool Draining and Chlorine Article in 196,000
the Your Service Connection Mailing
08/08/2023 District B Town Hall Meeting at 30
Abbotts Creek Community Center
08/19/2023 Mud Day Event at WCWP 70
08/22/2023 Walnut Creek Wetland Community 20 Rainwater Rewards, Drainage Responsibility
Partnership Meeting at Biltmore Hills Rain Barrel Brochures
Community Center
08/24/2023 Crabtree Creek Community 4 Rainwater Rewards and Volunteer Opportunities
Connector Trail Public Meeting at Brochures
- Worthdale Community Center
08/24/2023 Hare Snipe Watershed Public 105 Rainwater Rewards, Drainage Responsibility,
Meeting at Lake Lynn Community Volunteer Opportunities Brochures
_ Center
08/29/2023 ENV 101 for NCSU Students at 20
Rocky Branch
08/30/2023 Stormwater Billing Notification 60 Fee Brochures
Mailing and Fee Brochures
09/07/2023 Oakwood Garden Club Presentation 25
09/07/2023 Stormwater Management Advisory 44
Commission September Meeting
09/08/2023 Muslim Community Resource Fair at 25
the North Raleigh Mosque
09/08/2023 RDOT and Stormwater Job Fair 57
Event
Rev. 8.1.2022 22

°C ;$
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Date Description of Event/Activity Attendee & Material Count Types of Educational Materials
(#materials equals#attendees)
09/11/2023 Day of Service Parks and 30
Stormwater Cleanup Event at
Walnut Creek Softball Park
09/15/2023 Raleigh Neighborhood Exchange at 52 CWEP Big Six Pollution, Capture it! Contest,
Carolina Pines Community Center Drainage Responsibility, Flood Risk, Rain Barrel,
Rainwater Rewards Residential, R-3 Rack Card,
Scoop the Poop Card, Stream Stabilization
09/13/2023 Stormwater Smart Fall Newsletter 5116
09/18/2023 Pollution Prevention Social Media 5116
Campaign
09/18/2023 Still Leading by Example 60
Presentation: How Raleigh
Continues to Advance GSI at the
APWA Conference
09/20/2023 Site Development Infrastructure 30
Design Project for Students at Wake
STEM Early College High School
09/23/2023 PEJ Watershed Learning Network 15
Presentation at the WCWP
09/26/2023 Radio Interview on IDDE and GSI 1000
09/29/2023 Stormwater Billing Notification 66 Fee Brochures
Mailing and Fee Brochures
09/30/2023 Stormwater Billing Notification 13 Fee Brochures
Mailing and Fee Brochures
09/30/2023 Fall Rain Garden Rain Barrel 12 Stream Stabilization, Rain Barrel, Rainwater
Workshop at WCWP Rewards Residential, Volunteer Opportunities
Rev. 8.1.2022 23

$C4
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Table B-4: Public Education and Outreach school events
Date #Students Event Location Event Description Virtual/In-person
Attended
10/01/2022 91 Raleigh Police Department Youth In person
Chavis Community Center Summit
10/19/2022 45 Walnut Creek Wetland Park Mini Stream sampling demo and In person
storm drain table presentation
11/02/2022 250 Rolesville Middle School Career Opportunities Truck Event In person
11/09/2022 100 Joyner Elementary School Science Go Round Event In person
11/10/2022 1000 Dillard Drive Middle School Career Opportunities Truck Event In person
11/10/2022 600 Moore Square Middle School Career Day School Event In person
11/29/2022 64 York Elementary School Career Day Talk to Students In person
12/31/2022 13 Fuller Elementary School 5th Grade Science Club In person
EnviroScape Demos _
02/03/2023 22 Soapstone Pre-School Storytime Reading and Stream In person
Demo
02/07/2023 6 Moore Sq. Middle School GSI Lego Demo for Future Cities In person
Club
03/06/2023 52 Wake Young Men's Leadership EnviroScape Demos In person
Academy
03/14/2023 27 Raleigh Homeschool Network Rain Garden in a Water Bottle In person
Demo
03/24/2023 74 Hillburn Academy Elementary 1st Grade Book Reading and In person
School Drainpipe Presentation
04/14/2023 96 Fuller Elementary School Science Day- EnviroScape In person
Demos
Rev. 8.1.2022 24

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
04/18/2023 44 Fletcher Academy Elementary EnviroScape Demos In person
School
04/20/2023 100 York Elementary School STEM Night-EnviroScape Demos In person
04/28/2023 15 Soapstone Pre-School Storytime Reading and Stream In person
Demo
05/08/2023 12 Wooten Meadows - Girl Scout EnviroScape Demo and Wetland In person
Troup Walk &Talk
05/09/2023 200 Dillard Drive Middle School Career Day Presentation In person
09/11/2023 75 Exploris Middle School EnviroScape Demos In person
09/19/2023 10 Moore Square Middle School Stormwater talk with Future Cities In person
Students
09/23/2023 603 Moore Square Middle School Career Day Presentation/Talk In person
B.3 Program Assessment
Stormwater Education and Outreach continues to evolve and expand to meet and exceed permit requirements. The Education Plan was
revised with staff input during this reporting year. These revisions included the addition of a schedule to target one or more specific pollutants
on an annual basis coinciding to specific events, seasons, and reported discharges. The Communications Plan was also updated during the
reporting year. Updates included Communications support for SMAC meetings and a revised frequency as to when the Communications Plan
is reviewed by staff.
The City continues to use several methods including the Stormwater helpline, [e-mail], and social media to provide
information and educational resources the public. Educational materials (in English and Spanish) are regularly distributed via utility bill inserts,
newsletters, webpages, articles, social media, workshop presentations, classroom education events, and TV and radio campaigns. Overall
engagement has increased while staffing levels remain the same; staff participated in 12 more student/school events (22)than the previous
year(10). A total of 3,443 students were engaged by staff this reporting period as compared to 1,219 last period.
The City requires that all City staff complete training on allowable discharges and Illicit Discharge Detection and Elimination (IDDE) every three
years. Pollution Prevention and Good Housekeeping (PPGH)training is required to be completed by designated staff every three years. The
migration of this on-line training from the iLearn training platform to the SuccessFactors training platform was initiated during this reporting
period and continues to date. Fewer staff required PPGH training this year due to the large number of staff that completed PPGH training
during the last two reporting years.
Rev. 8.1.2022 25

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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 comment and reporting. The City's SWMP is noticed and presented at a public hearing for
comment by 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. City Council established the
Stormwater Management Advisory Commission (SMAC) as a means of obtaining regular public input on policy and project matters. SMAC
meets monthly, with few exceptions, to review stormwater management issues and provide guidance and recommendations to City Council.
Comments by the public are also received during SMAC meetings.
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 FY2022-2023.
Table C-1: Public Involvement and Participation Metrics and Results
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section C.2 (a) Continue to provide Continue to provide Report number of Adopt a Stream: 589
Volunteer community community volunteer community volunteer participants in each City Storm drain marking: 26
involvement program opportunities. opportunities. volunteer opportunity Stream monitoring: 15
Foster a Stream: 308
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.
Rev. 8.1.2022 26

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section C.2 (b) Conduct meeting(s)with Conduct meeting(s)with Report dates for SMAC 10/6/2022—Ordinance
Establish a mechanism for the SMAC. the SMAC. meetings and discussion change to meet Neuse
public involvement topics pertaining to MS4 Sensitive Water rule
Evaluate the program Evaluate the program compliance requirements update
effectiveness annually and effectiveness annually and 11/3/2022—Stormwater
notify the Water Quality notify the Water Quality Design Manual update
Manager of program Manager of program 12/8/2022— Pigeon House
modifications. modifications. Branch Public Outreach
Plan
1/5/2023— Illicit Discharge
Detection and Elimination
Program presentation
2/2/2023—Stormwater
budget development
approach and process
3/2/2023—Stormwater
Program FY24 budget
update
4/6/2023—n/a
5/4/2023—n/a
6/1/2023—n/a
8/3/2023— Draft NPDES
MS4 Permit NCDEQ public
comment process/period
9/7/2023— Raleigh
Stormwater Design Manual
update
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.
Rev. 8.1.2022 27

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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. manaqement-plan
Report mechanisms used City webpage with the
Publicize a comment Publicize a comment for public review and SWMP and Water Quality
period for updates to the period for updates to the comment on the SWMP Supervisor's contact
SWMP. SWMP. information posted.
Evaluate the program Evaluate the program City Stormwater helpline
effectiveness annually and effectiveness annually and phone number and email
notify the Water Quality notify the Water Quality address to provide citizens
Manager of program Manager of program a mechanism to comment
modifications. modifications. on the SWMP between
updates.
Part II Section C.2 (e) Place legal public notice to Place legal public notice to If public notice occurred for Public comment on the
Public notice advertise public review and advertise public review and SWMP updates, report SWMP updates utilizing
comment opportunities comment opportunities mechanism(s) used to the City's website, social
when implementing a when implementing a advertise public review and media outreach, and
public public comment and public notice SMAC discussion occurred
involvement/participation involvement/participation period. 8/4/2022—9/1/2022.
program, as needed. program, as needed.
Report number of SMAC 11
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. The total number of volunteers participating in public
involvement programs increased from last year. The Adopt a Stream, Foster a Stream, and Storm Drain Marking volunteer opportunities all
experienced an increase in participation over this reporting year. The Stream Monitoring volunteer program, which requires volunteers to
complete a training and commit to taking monthly samples over one year, retained a similar number of dedicated volunteers. SMAC continued
to support City staff in program implementation through regular input during their 11 meetings over the course of the reporting period. In
response to the May 2023 self-audit, staff is considering separating the Education and Outreach Plan from the Public Involvement and
Participation Plan to better define and organize the separate programs' tasks and Plan coordinators' responsibilities.
Rev. 8.1.2022 28

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. 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 three staff implement the dry weather screening program in addition to other duties.
This includes inspecting outfalls, investigating potential illicit discharges, and maintaining 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 target audiences and 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 widely distribute illicit discharge prevention information.
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 FY2022-2023.
Table D-1: IDDE Metrics and Results
Permit Reference/BMP FY202311111 FY2024 Reporting Metric(s) 2022-2023 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.
Part II Section D.2 (b) Maintain the storm sewer Maintain the storm sewer Report number of major 888
Maintain a storm sewer system base map in GIS and system base map in GIS and outfalls
Rev. 8.1.2022 29

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
system base map of update annually as new update annually as new Provide overview map of See Figure D-1
major MS4 outfalls inventory is added. inventory is added. receiving streams and major below
outfalls
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 D.2 (c) Review annually the IDDE Review annually the IDDE Report number of dry weather 244 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; 75 dry
outfalls Report number of discharges weather flows were
Report any discharge that Report any discharge that reported to the DEQ Regional observed; 2 illicit
constitutes an imminent constitutes an imminent Office or NC Division of discharges were
threat to health or the threat to health or the Emergency Management due detected and
environment by phone or environment by phone or to an imminent threat to health remediated
email to the DEQ Regional email to the DEQ Regional or the environment
Office (during business Office (during business 47 illicit discharges
hours) or NC Division of hours)or NC Division of were reported to the
Emergency Management Emergency Management NCDEQ Regional
State Operation Center State Operation Center Office due to an
hotline (outside of business hotline (outside of business imminent threat to
hours)within 24 hours. hours)within 24 hours. health or the
Raleigh Water is responsible Raleigh Water is responsible environment
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.
Rev. 8.1.2022 30

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 I FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section D.2 (d) Review annually the Review annually the Report types of IDDE training 1827 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
iLearn and Success
Conduct employee training Conduct employee training Factors platforms.
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 received
Maintain a public administration helpline to administration helpline to discharge complaints received and responded to
reporting mechanism(s) receive public reports. receive public reports. 200 complaints of
See helpline reporting metrics potential illicit
Maintain the illicit discharge Maintain the illicit discharge in Table 5, Part II Section B.2 discharges; 91 calls
reporting email address reporting email address (e) of SWMP were received
(IllegalDischarge@raleighnc. (IllegalDischarge@raleighnc. through the City's
qov). goy). Stormwater helpline
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 the Stormwater routed to the Stormwater
Management Division. Management Division.
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.
Rev. 8.1.2022 31

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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.
Rev. 8.1.2022 32

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Figure D-1: Receiving waters and major outfalls
lc .8 N
• y I'
/`� FORE
C/♦
DU,Hnr��i'" `A. t •• • /�� ROLE
IV
. .
• • .
• ., ,
•' `■ r�
. ..,,,./,
. ...._ • 11 •
•
1 •
• ♦ /
AL
RUU = .: •
. 1. y
RISVILLE \i
_.•:,._, •~••'` �_t.• 1• ♦ -: t 1
♦r
1411 iii , . ./ i •
'v. \�_M. t 1.
•�� s -: . •.,
I 3�♦i " . Al �A KNIGH-MALE�f
GARY ••r • •
•• • 440 t ,• A ' t 1 6 \....,,••Am%,.........L.........'
77......X)....mwr.......:00.........„.....t, i ,, • i 16 :
'114 t A f- --AINS) A • A. ••
Receiving Waters
eg
NC303d 2018 \ •
NC Surface Waters RA LEIGH
COR Outfall Category
• Major NPDES Outfall-General(Direct)
d01
• EEEEEEi
NDES t Industrial(Direct)
• NDES t General(Non-Direct) • T
I Industrial(Non-Direct) GARNER
�ro m a•i.an cis
Rev.8.1.2022 33

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Table D-2: IDDE investigations and actions taken October 1, 2022 - September 30, 2023
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
9200 Brier Creek 9/28/2022 10/3/2022 Wastewater from wash bay Notice of Violation Catch system installed to reroute
Pkwy, Raleigh, NC discharged offsite and into a discharge back to internal
27617 storm drain collection system
4604 Poole Rd, 10/6/2022 10/6/2022 Gas leak from gas tank Notice of Violation Sweeping and removal
Raleigh, NC
27610
1135 N West St, 10/6/2022 10/6/2022 Wastewater discharged from a Notice of Violation Vacuum and removal
Raleigh, NC broken hose/pipe
27603
1325 Lake 10/6/2022 10/6/2022 Possible dumping into storm Warning Letter None required
Wheeler Rd, drain at front of lot
Raleigh, NC 27603
2310 Garner Rd, 10/12/2022 10/12/2022 Sheen and discoloration at Notice of Violation Vacuum and removal
Raleigh, NC, outfall
27610
202 Ashe Ave, 10/19/2022 10/19/2022 Concrete discharged off the Notice of Violation Vacuum and removal
Raleigh, NC 27605 back side of 202 Ashe Ave and
discharged along Ashe Ave
into a storm drain
4412 City of Oaks 10/20/2022 10/20/2022 Private SSO entered into storm Warning Letter Vacuum and removal
Wynd, Raleigh, drain. Remediation completed
NC, 27612 prior to response.
429 S Wilmington 10/20/2022 10/21/2022 Possible automotive oil/fluid Investigated and found not to be a None required
St, Raleigh, NC, drained from vehicle into water quality concern; no further
27601 stormwater inlet located within action taken
the parking garage
2951 Rowland Rd, 10/25/2022 10/26/2022 Complaint about United Investigated and found not to be a None required
Raleigh, NC, Rentals dumping portable water quality concern; no further
27615 toilets into the street action taken
1705 Tryon Park 10/25/2022 10/25/2022 City of Raleigh SSO —2,150 Referred to proper authority Vacuum and removal
Dr, Raleigh, NC, gallons, with —1,050 reaching
27610 surface waters
Rev. 8.1.2022 34

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Address R Date Date
eived Responded Description Enforcement Remediation Actions
431 Como Dr, 10/26/2022 10/27/2022 Possible grey water pumping Investigated and found not to be a None required
Raleigh, NC, outside of the house water quality concern; no further
27610 action taken
11200 Galleria 10/30/2022 10/31/2022 Rex Wellness Center possibly Investigated and found not to be a None required
Ave, Raleigh, NC, discharging pool water water quality concern; no further
27614 action taken
3212 Hillsborough 10/30/2022 10/31/2022 Sewer cleanout potentially Investigated and found not to be a None required
St, Raleigh, NC, discharging water quality concern; no further
27607 action taken
4219 Mantua Way, 10/31/2022 11/1/2022 Renters possible dumping Investigated and found not to be a None required
Raleigh, NC, trash into catch basins water quality concern; no further
27604 action taken
6221 Mt. Herman 11/1/2022 11/1/2022 Observed wastewater from Notice of Violation Vacuum and removal
Road, Raleigh, NC wash area and degreaser
27617 entering storm drain
1500 Nottingham 11/1/2022 11/1/2022 Creek discolored after a rainfall Investigated and found not to be a None required
Rd, Raleigh, NC, event water quality concern; no further
27607 action taken
2708 Glascock Rd, 11/6/2022 11/7/2022 Possible oil in road Investigated and found not to be a None required
Raleigh, NC 27610 water quality concern; no further
action taken
1936 Amity Hill Ct, 11/16/2022 11/17/2022 Possible paint dumped into Investigated and found not to be a None required
Raleigh, NC, storm drain water quality concern; no further
27612 _ action taken
1427 Butler Cabin 11/21/2022 11/22/2022 Possible grease and cooking Investigated and found not to be a None required
Dr, Raleigh, NC, oils dumped into storm drain water quality concern; no further
27610 _ action taken
Intersection of 11/22/2022 11/23/2022 Motor oil from a vehicle Unknown responsible party: City of Vacuum and removal
Trinity Rd and accident discharged into a Raleigh remediated
Corporate Center storm drain
Dr, Raleigh, NC
27607
1416 Banbury Rd, 11/23/2022 11/23/2022 City of Raleigh SSO —4,725 Referred to proper authority Vacuum and removal
Raleigh, NC, gallons discharged, with
27607 —4,000 gallons reaching
surface waters
Rev. 8.1.2022 35

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Address R Date Date
eived Responded Description Enforcement Remediation Actions
2419 Wycliff Rd, 11/23/2022 11/23/2022 Backflow from pool house Notice of Violation Source removed; no additional
Raleigh, NC, entering stream remediation required
27607
6421 Old 11/23/2022 11/23/2022 Car wash discharge into storm Notice of Violation Source removed; no additional
Westgate Rd, drain remediation required
Raleigh, NC,
27617
2772 Milburnie Rd, 12/1/2022 12/1/2022 City of Raleigh SSO -500 Referred to proper authority Vacuum and removal
Raleigh, NC 27610 gallons discharged to surface
waters
151 Water Works 12/3/2022 12/5/2022 Discolored watercourse Summary Memorandum Installed new silt fence, and
St, Raleigh, NC, downstream of temporary leaf removed leaf storage pile
27603 storage pile
9950 Durant Rd, 12/7/2022 12/7/2022 Transmission fluid discharged Notice of Violation Sweeping and removal
Raleigh, NC, into stormwater inlet
27614
211 E Six Forks 12/13/2022 12/13/2022 Concrete slurry discharged Notice of Violation Source removed; no additional
Rd, Raleigh, NC, near creek remediation required
27609
2601 Lake Dr, 12/13/2022 12/13/2022 Sewer lifts pump failure and Notice of Violation Disinfectant application
Raleigh, NC, wastewater discharging into a
27607 storm drain. _
720 Pershing Rd, 12/14/2022 12/15/2022 Concrete spill in road and into Notice of Violation Sweeping and removal
Raleigh, NC, a storm drain
27608
4120 New Bern 12/16/2022 12/28/2022 Possible leachate issues Investigated and found not to be a None required
Ave, Raleigh, NC, concerning leaf piles water quality concern; no further
27610 _ _ action taken
2151 Sunnybrook 12/16/2022 12/28/2022 Possible leachate issues Investigated and found not to be a None required
Rd, Raleigh, NC, concerning leaf piles water quality concern; no further
27610 action taken
4600 Lake Boone 12/16/2022 12/30/2022 Possible leachate issues Investigated and found not to be a None required
Trl, Raleigh, NC, concerning leaf piles water quality concern; no further
27607 action taken
6100 Thornton Rd, 12/16/2022 12/30/2022 Possible leachate issues Investigated and found not to be a None required
Raleigh, NC, concerning leaf piles water quality concern; no further
27616 action taken
Rev. 8.1.2022 36

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Address R Date Date
eived Responded Description Enforcement Remediation Actions
2570 S Wilmington 12/17/2022 12/19/2022 Non-PCB cooling oil Notice of Violation Vacuum and removal
St, Raleigh, NC, discharged from a transformer
27603 after being shot twice
720 Pershing Rd, 12/20/2022 12/20/2022 Processed concrete waste Notice of Violation Excavation and removal
Raleigh, NC water leaving site and entering
27608 storm drain
6006 Falls of 12/21/2022 12/21/2022 Observed wastewater/oil sheen Notice of Violation Vacuum and removal
Neuse Rd, at outfall during a dry weather
Raleigh, NC, flow inspection
27609
4616 Mentone 12/22/2022 12/22/2022 Possible vehicle fluid leaking Investigated and found not to be a None required
Way, Raleigh, NC, into street water quality concern; no further
27612 action taken
8700 Ice Dr, 12/30/2022 12/30/2022 Offsite run-on concerns and Investigated and found not to be a None required
Raleigh, NC, possible turbidity water quality concern; no further
27617 action taken
7523 Glenwood 12/30/2022 12/30/2022 Possible leachate issues Investigated and found not to be a None required
Ave, Raleigh, NC, concerning leaf piles water quality concern; no further
27612 action taken
2537 S Saunders 1/7/2023 1/9/2023 Possible dumping of cooking Investigated and found not to be a None required
St, Raleigh, NC, oil into a storm drain water quality concern; no further
27603 _ action taken _
606 Glenwood 1/9/2023 1/9/2023 Confetti on street/curbline Warning Letter Vacuum and removal
Ave, Raleigh, NC,
27603
2500 Poole Rd, 1/11/2023 1/11/2023 Crane tree service vehicle Notice of Violation Sweeping and removal
Raleigh, NC, discharged > 25 gallons of
27610 hydraulic oil _
3313 Quail Hollow 1/11/2023 1/11/2023 Private SSO Notice of Violation Disinfectant applied, removed
Dr, Raleigh, NC, solids
27609
3300 Grove 1/12/2023 1/12/2023 City of Raleigh SSO —10,800 Referred to proper authority Vacuum and removal
Crabtree Cres, gallons discharged, with
Raleigh, NC, 10,800 gallons being
27613 discharged to
Rev. 8.1.2022 37

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
320 St Albans Dr, 1/12/2023 1/13/2023 Styrofoam in curbline and Notice of Violation Vacuum and removal
Raleigh, NC, storm drain
27609
Hillsborough St, & 1/17/2023 1/17/2023 Grease being dumped into Notice of Violation Vacuum and removal
Pogue St, Raleigh, storm drain and sidewalk
NC, 27607
900 Navaho Dr, 1/17/2023 1/17/2023 Private SSO Notice of Violation Vacuum and removal
Raleigh, NC,
27609
9402 Falls of 1/19/2023 1/19/2023 Grease and used food oil Notice of Violation Vacuum and removal
Neuse Rd, draining into storm drain
Raleigh, NC,
27615
2310 Garner Rd, 1/19/2023 1/19/2023 Complaint about mud/dirt along Investigated and found not to be a None required
Raleigh, NC, Garner Road water quality concern; no further
27610 action taken
621 Pine Ridge PI, 1/25/2023 1/26/2023 Private SSO out of two Notice of Violation Vacuum and removal
Raleigh, NC, manholes on the far north side
27609 of the property adjacent to Big
Branch
2401 Wake Forest 1/27/2023 1/27/2023 Illicit connection made by Notice of Violation Vacuum and removal
Rd, Raleigh, NC, restaurant to the stormwater
27608 system
7800 Falls of 1/31/2023 1/31/2023 Possible oil spill discharged in Investigated and found not to be a None required
Neuse Rd, parking lot near a storm drain water quality concern; no further
Raleigh, NC, inlet action taken
27615
4911 Gann Trl, 1/31/2023 1/31/2023 Lawn care vehicle leaking oil Warning Letter None required
Raleigh, NC, along street
27612
1239 N Raleigh 2/1/2023 2/2/2023 Trash/debris on property, and Investigated and found not to be a None required
Blvd, Raleigh, NC, possible sewage discharging water quality concern; no further
27610 action taken
2310 Dixie Forest 2/1/2023 2/1/2023 Wash water was discharging Notice of Violation Boom and pad placement
Rd, Raleigh, NC, into storm drain
27615
Rev. 8.1.2022 38

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
3317 2/6/2023 2/6/2023 Private SSO discharging into Notice of Violation Vacuum and removal
Woodmeadow storm drain and pooling at
Pkwy, Raleigh, outfall
NC, 27610
4205 Quail Hollow 2/6/2023 2/6/2023 Volunteer reported possible Investigated and found not to be a None required
Dr, Raleigh, NC, high pH and bubbles in the water quality concern; no further
27609 stream behind their house action taken
701 E Lane St, 2/7/2023 2/8/2023 Possible grease trap discharge Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27601 action taken
109 E North St, 2/10/2023 2/10/2023 Sediment and rocks leaving Investigated and found not to be a None required
Raleigh, NC, gravel parking lot and entering water quality concern; no further
27601 street action taken
3108 Starmount 2/10/2023 2/10/2023 Rock gravel leaving yard Investigated and found not to be a None required
Dr, Raleigh, NC, water quality concern; no further
27604 action taken
3821 Generosity 2/10/2023 2/10/2023 Sediment building up at Warning Letter Sweeping and removal
Ct, Garner, NC, entrance
27529
5800 Light Brigade 2/14/2023 2/14/2023 <25 gallons of hydraulic fluid Summary Memorandum Sweeping and removal
Ln, Raleigh, NC, discharged onto road and did
27612 not reach a storm drain
2310 Garner Rd, 2/16/2023 2/27/2023 Possible sediment discharge Warning Letter None required
Raleigh, NC,
27610
10505 Crisp Dr, 2/16/2023 2/16/2023 Possible carpet cleaning Warning Letter None required
Raleigh, NC, company discharging
27614 wastewater
7841 Alexander 2/21/2023 2/21/2023 Possible wastewater being Warning Letter None required
Promenade PI, dumped out back door and
Raleigh, NC, entering street
27617
7201 ACC Blvd, 2/24/2023 2/24/2023 Possible wastewater discharge Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27617 action taken
Rev. 8.1.2022 39

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
4011 Capital Blvd, 2/27/2023 2/27/2023 Mix used sewage waste Notice of Violation Vacuum and removal
Raleigh, NC, discharging out of multiple
27604 cleanouts
3800 Lake Boone 2/28/2023 2/28/2023 Private SSO flowing into storm Notice of Violation Vacuum and removal
Trl, Raleigh, NC, drain
27607
1300 Binley PI, 3/1/2023 3/2/2023 Film noted on stream Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27615 action taken
Norris St, & Frank 3/2/2023 3/2/2023 Sediment/turbid water in Investigated and found not to be a None required
St, Raleigh, NC, stream water quality concern; no further
27604 action taken
3517 Huntleigh Dr, 3/7/2023 3/7/2023 Possible motor oil leak Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27604 action taken
1800 Generation 3/7/2023 3/7/2023 Staff found possible evidence Warning Letter Vacuum and removal
Dr, Raleigh, NC, of a previous private SSO in a
27612 parking lot
Jones Franklin Rd 3/8/2023 3/8/2023 Slight discoloration and film on Investigated and found not to be a None required
to 1-440, Raleigh, surface of water water quality concern; no further
NC, 27606 action taken
8100 Brier Creek 3/8/2023 3/8/2023 Possible non-PCB insulating oil Investigated and found not to be a Sweeping and removal
Pkwy, Raleigh, leak water quality concern; no further
NC, 27617 action taken
700 Beacon Lake 3/8/2023 3/8/2023 Hydraulic oil spill from SWS Summary Memorandum Vacuum and removal
Dr, Raleigh, NC, truck
27610
1241 Goode St, 3/9/2023 3/9/2023 Kitchen grease being dumped Notice of Violation Vacuum and removal
Raleigh, NC, into a stormwater inlet
27603
4120 Sedgewood 3/10/2023 3/10/2023 Construction contractors Warning Letter None required
Dr, Raleigh, NC, dumping unknown fluid onto
27612 trees/natural area
6030 Stratton P1, 3/13/2023 3/13/2023 City of Raleigh SSO —4200 Referred to proper authority Vacuum and removal
Raleigh, NC, gallons discharge, with —4200
27609 gallons reaching surface
waters
Rev. 8.1.2022 40

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
Staghorn Ln & 3/17/2023 3/17/2023 Commercial vehicle fire, Notice of Violation Vacuum and removal
Buckhead Dr, fuel/oil/other engine fluids
Raleigh, NC, discharged and entered a
27615 storm drain
2727 St Marys St, 3/18/2023 3/18/2023 Vehicle accident that toppled Notice of Violation Vacuum and removal
Raleigh, NC, pole mounted transformer and
27609 spilled insulating oil
307 N Bloodworth 3/23/2023 3/23/2023 Possible sewage discharging Investigated and found not to be a None required
St, Raleigh, NC, across sidewalk water quality concern; no further
27601 action taken
1060 Corporation 3/28/2023 3/28/2023 Oil and other vehicle fluids Notice of Violation Planting and restoration
Pkwy, Raleigh, washed into storm drain.
NC, 27610
8005 Duck Creek 3/30/2023 3/30/2023 City of Raleigh SSO -728 Referred to proper authority Vacuum and removal
Dr, Raleigh, NC, gallons discharged with 528
27616 reaching surface waters.
2904 Fairview Rd, 4/3/2023 4/3/2023 Possible construction debris Warning Letter None required
Raleigh, NC, dumping
27608
1505 Capital Blvd, 4/3/2023 4/3/2023 City of Raleigh SSO Referred to proper authority Vacuum and removal
Raleigh, NC, approximately 675 gallons
27603 discharged, with all reaching
surface waters
1551 Rock Quarry 4/4/2023 4/4/2023 Oil discharge from storage Notice of Violation Vacuum and removal
Rd, Raleigh, NC, areas
27610
3950 Fairsted Dr, 4/6/2023 4/6/2023 Discolored water in creek Investigated and found not to be a None Required
Raleigh, NC, water quality concern; no further
27612 action taken
4359 Six Forks 4/7/2023 4/10/2023 Unknown chemicals being Notice of Violation Vacuum and removal
Rd, Raleigh, NC, used and discharging into
27609 storm drain
2201 S Wilmington 4/7/2023 4/7/2023 Diesel spill throughout parking Notice of Violation Vacuum and removal
St, Raleigh, NC, lot
27603
Rev. 8.1.2022 41

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
1629 Battery Dr, 4/13/2023 4/14/2023 Suspected illicit discharge into Investigated and found not to be a None required
Raleigh, NC 27610 Rocky Branch water quality concern; no further
action taken
409 Harvard St, 4/13/2023 4/14/2023 Possible pool discharge Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27609 action taken
2537 S Saunders 4/13/2023 4/13/2023 Trash compactor leaking into Notice of Violation Vacuum and removal
St, Raleigh, NC, parking lot and storm drain
27603
1406 Duplin Rd, 4/14/2023 4/14/2023 Possible dumping of paint in Investigated and found not to be a None required
Raleigh, NC, the gutter that flows directly water quality concern; no further
27607 into the creek action taken
1431 Gavin St, 4/18/2023 4/18/2023 City of Raleigh SSO Referred to proper authority Vacuum and removal
Raleigh, NC, approximately 3,500 gallons
27608 discharged, with about 3,000
reaching surface waters
513 E Lane St, 4/19/2023 4/19/2023 Smell coming from stormwater Investigated and found not to be a None required
Raleigh, NC, discharge into sink hole after water quality concern; no further
27601 rain events action taken
9299 Glenwood 4/19/2023 4/19/2023 City of Raleigh SSO Referred to proper authority Vacuum and removal
Ave, Raleigh, NC, approximately 1000 gallons
27617 were discharged, with all
reaching surface waters
Lake Boone Trail 4/21/2023 4/24/2023 Slight fuel spill on ground Warning Letter Vacuum and removal
& I-440, Raleigh,
NC, 27607
111 Bertie Dr, 4/21/2023 4/21/2023 Possible illicit discharge during Investigated and found not to be a None required
Raleigh, NC, dry weather flow water quality concern; no further
27610 action taken
8401 Glenwood 4/21/2023 4/21/2023 City of Raleigh SSO Referred to proper authority Vacuum and removal
Ave, Raleigh, NC, approximately 129,000 gallons
27612 were discharged, with about
7,000 gallons reaching surface
waters.
913 S Blount St, 4/22/2023 4/25/2023 Possible offsite sediment Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27601 action taken
Rev. 8.1.2022 42

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
950 Peterson St, 4/25/2023 4/25/2023 The Rocky Branch and Central Investigated and found not to be a None required
Raleigh, NC, Walnut Creek stream team water quality concern; no further
27610 identified a strong chemical action taken
smell and oil in Walnut Creek
at this location: 35.757685°N
78.624734°W
514 Ashe Ave, 4/26/2023 4/27/2023 Rocky Branch stream team Investigated and found not to be a None required
Raleigh, NC, found a dry weather flow water quality concern; no further
27606 action taken
4012 The Oaks Dr, 4/28/2023 5/1/2023 Private SSO—under her deck Warning Letter Vacuum and removal
Raleigh, NC, and in grassed areas
27606
200 W Davie St, 5/2/2023 5/2/2023 Styrofoam on patio and Warning Letter Vacuum and removal
Raleigh, NC, curb/storm drains
27601
1853 Western 5/3/2023 5/3/2023 Unknown brown liquid floating Investigated and found not to be a None required
Blvd, Raleigh, NC, on surface of stream water quality concern; no further
27606 action taken
8551 Glenwood 5/3/2023 5/3/2023 Private SSO entering storm Notice of Violation Vacuum and removal
Ave, Raleigh, NC, drain
27612
7300 Parott Dr, 5/4/2023 5/5/2023 The area of complaint where Notice of Violation Vacuum and removal
Raleigh, NC, they get an off and on flow of
27616 what looks and smells to be
sewage at different times of the
day.
1209 Chaney Rd, 5/5/2023 5/8/2023 Owner stated a small Warning Letter Sweeping and removal
Raleigh, NC, transmission fluid leak
27606
4417 Antique Ln, 5/5/2023 5/5/2023 City of Raleigh SSO Referred to proper authority Vacuum and removal
Raleigh, NC, approximately 1,850 gallons
27616 discharged, with all of the
discharge reaching surface
waters
6829 W Lake 5/9/2023 5/10/2023 Turbid water after rain event Investigated and found not to be a None required
Anne Dr, Raleigh, water quality concern; no further
NC, 27612 action taken
Rev. 8.1.2022 43

CS NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address R Date Date
eived Responded Description Enforcement Remediation Actions
Glascock St& 5/10/2023 5/11/2023 observed a potential private Investigated and found not to be a None required
Wake Forest Rd, SSO water quality concern; no further
Raleigh, NC, action taken
27604
712 Brooks Ave, 5/11/2023 5/12/2023 Milky white color in Notice of Violation Vacuum and removal
Raleigh, NC, Beaverdam-SW creek
27607
2801 Lineberry Dr, 5/11/2023 5/11/2023 Turned over street sweeper Summary Memorandum Sweeping and removal
Raleigh, NC, discharged fuel and hydraulic
27603 fluid
6907 Coventry 5/11/2023 5/12/2023 Possible Sewage leak coming Investigated and found not to be a None required
Ridge Rd, Raleigh, from 6907 Coventry Ridge water quality concern; no further
NC, 27616 Road action taken
7700 Fiesta Way, 5/12/2023 5/13/2023 Petroleum product spilled to Warning Letter Sweeping and removal
Raleigh, NC, road
27615
414 S Person St, 5/12/2023 5/13/2023 Styrofoam from construction in Notice of Violation Vacuum and removal
Raleigh, NC, curbline and storm drain
27601
8300 Meadow 5/12/2023 5/12/2023 Possible pool discharge Investigated and found not to be a None required
Ridge Ct, Raleigh, water quality concern; no further
NC, 27615 action taken
118 S Blount St, 5/13/2023 5/14/2023 Vehicle accident that toppled Notice of Violation Sweeping and removal
Raleigh, NC, pole mounted transformer and
27601 overhead transformer and
spilled insulating oil —18
gallons
4010 Springfield 5/15/2023 5/17/2023 Potentially trash in storm drain Investigated and found not to be a None required
Creek Dr, Raleigh, water quality concern; no further
NC, 27616 action taken
615 Royal St, 5/15/2023 5/16/2023 Possible purple algae or purple Investigated and found not to be a None required
Raleigh, NC, pollution water quality concern; no further
27607 action taken
2805 Wilcox PI, 5/15/2023 5/16/2023 Possible sewage leak Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27607 action taken
Rev. 8.1.2022 44

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
3813 Beryl Rd, 5/15/2023 5/16/2023 Heavy flow out of outfall Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27607 action taken
307 Elm St, 5/16/2023 5/17/2023 Possible sewer odor at outfall Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27601 action taken
349 Tryon Rd, 5/17/2023 5/17/2023 Observed plumber making Warning Letter Vacuum and removal
Raleigh, NC, repairs to grease interceptor,
27603 no active flow into the storm
drain
3402 Hampton Rd, 5/17/2023 5/17/2023 PVC pipe discharged sanitary Notice of Violation Source removed; no additional
Raleigh, NC, waste directly into creek remediation required
27607
4500 Gates St, 5/18/2023 5/18/2023 Dirt, sediment, and leaf debris Warning Letter Vacuum and removal
Raleigh, NC, dumped into storm drain by
27609 contractors for the property
owner
5501 Capital Blvd, 5/19/2023 5/19/2023 Grease dumped into storm Notice of Violation Vacuum and removal
Raleigh, NC, drain
27616
8004 Knebworth 5/23/2023 5/24/2023 Pressure wash water running Warning Letter None required
Ct, Raleigh, NC, off into street
27613 _
5444 Meryton Park 5/25/2023 5/25/2023 Possible leaking vehicle Investigated and found not to be a None required
Way, Raleigh, NC, water quality concern; no further
27616 action taken
3505 Canter Ln, 5/31/2023 5/31/2023 Power washing wastewater Warning Letter None required
Raleigh, NC, entering street
27604
5801 6/2/2023 6/5/2023 Construction debris washed Notice of Violation Vacuum and removal
Heatherbrook Cir, into storm drain
Raleigh, NC,
27612
613 W Morgan St, 6/5/2023 6/6/2023 Potentially hazardous waste at Investigated and found not to be a None required
Raleigh, NC, rear of abandoned building water quality concern; no further
27603 action taken
Rev. 8.1.2022 45

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
Intersection of 6/6/2023 6/6/2023 City of Raleigh SSO Referred to proper authority Vacuum and removal
Millbrook& approximately 700 gallons
Hargrove Road discharged with about 600
gallons reaching surface
waters
Interstate 440 East 6/7/2023 6/8/2023 Motor vehicle accident at Poole Referred to proper authority None required
Bound ending at Rd and 1-440
Poole Road
400 Redwood Cir., 6/7/2023 6/7/2023 Potential concrete spill on road Warning Letter None required
Raleigh, NC, and into the storm drain.
27609
4740 Archean 6/13/2023 6/13/2023 City of Raleigh SSO —6,624 Referred to proper authority Vacuum and removal
Way, Raleigh, NC, gallons with —3,000 gallons
27616 entering surface waters
5 E Edenton St, 6/16/2023 6/16/2023 Cleaning of food waste Warning Letter None required
Raleigh, NC, containers over storm drains
27601
7700 Burwell St, 6/16/2023 6/16/2023 Wash water from center Summary Memorandum Temporarily blocked storm drain
Raleigh, NC, vehicle wash bay is entering until structural repair can be
27615 into a stormwater catch basin, completed
and discharges directly to
surface waters
7550 Creedmoor 6/16/2023 6/16/2023 Obstructed storm drain inlet Unknown responsible party; City of Vacuum and removal
Rd, Raleigh, NC, Raleigh remediated
27613
6500 Litchford Rd, 6/20/2023 6/22/2023 Complaint for public Nuisance Warning Letter None required
Raleigh, NC, issues and possible sewer leak
27615
2104 Saturn St, 6/23/2023 6/23/2023 Vehicle fluid in curb line Notice of Violation Sweeping and removal
Raleigh, NC,
27603
7608 Birchmoor 6/23/2023 6/23/2023 Vehicle fluid discharged from Notice of Violation Sweeping and removal
Way, Raleigh, NC vehicle into parking lot
27616
7608 Birchmoor 6/23/2023 6/23/2023 Gasoline leak from vehicle and Notice of Violation Absorbent applied and removed
Way, Raleigh, NC, into catchment
27616
Rev. 8.1.2022 46

CS NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address R Date Date
eived Responded Description Enforcement Remediation Actions
6305 Belle Crest 6/25/2023 6/26/2023 Potential Styrofoam packing Investigated and found not to be a None required
Dr, Raleigh, NC, material enter the drainage water quality concern; no further
27612 system. action taken
12308 Dunard St, 6/26/2023 6/26/2023 Paint dumped into storm drain Unknown responsible party; City of Power washing with containment
Raleigh, NC, Raleigh remediated
27614
714 Pershing Rd, 6/27/2023 6/27/2023 Sediment leaving property and Investigated and found not to be a Sweeping and removal
Raleigh, NC, entering curb line water quality concern; no further
27608 action taken
902 Shellbrook Ct, 6/28/2023 6/28/2023 City of Raleigh SSO - 288 Referred to proper authority Vacuum and removal
Raleigh, NC, gallons discharged, with -100
27609 gallons reaching surface
waters.
3800 Greywood 6/30/2023 6/30/2023 City of Raleigh SSO -57 Referred to proper authority Vacuum and removal
Dr, Raleigh, NC, gallons discharged with 57
27604 gallons entering surface
waters.
1600 Curthay Ct, 6/30/2023 7/3/2023 SWS vehicle discharge -20 Summary Memorandum Vacuum and removal
Raleigh, NC, gallons of hydraulic fluid, with
27610 -2 gallons reaching stormwater
drain.
4821 River Stream 7/2/2023 7/3/2023 Carpet cleaning services Warning Letter None required
Way, NC, 27616 potentially dumped wastewater
into storm drain
2526 Hillsborough 7/3/2023 7/5/2023 Possible grease discharge Investigated and found not to be a Vacuum and removal
St, Raleigh, NC, along sidewalk water quality concern; no further
27607 action taken
200 W Davie St, 7/4/2023 7/5/2023 Potential construction debris Investigated and found not to be a Vacuum and removal
Raleigh, NC, water quality concern; no further
27601 action taken
10 Montgomery St, 7/10/2023 7/11/2023 Potential erosion and offsite Investigated and found not to be a None required
Raleigh, NC, sediment water quality concern; no further
27607 action taken
5400 Trinity Rd, 7/10/2023 7/11/2023 Offsite sediment due to Referred to proper authority None required
Raleigh, NC, construction
27607
Rev. 8.1.2022 47

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address ReDceived ate Date
Responded Description Enforcement Remediation Actions
2331 Grant Ave, 7/11/2023 7/11/2023 Potential paint dumped in curb Warning Letter Vacuum and removal
Raleigh, NC, line along Grant Avenue
27608
301 Shepherd St, 7/12/2023 7/12/2023 Concrete and sediment runoff Notice of Violation Sweeping and removal
Raleigh, NC, from construction site
27607
5655 New Bern 7/17/2023 7/17/2023 Potential white discharge in Investigated and found not to be a None required
Avenue, Raleigh, ponds near New Bern Bridge water quality concern; no further
NC 27610 and Neuse River action taken
6615 Falls of 7/17/2023 7/18/2023 Car wash wastewater entering Notice of Violation Berm construction
Neuse Rd, storm system on property
Raleigh, NC,
27615
7512 South 7/21/2023 7/21/2023 Sewer lateral service is broken, Notice of Violation Sewer lateral service repaired
Tanglewild Dr, discharging into surface
Raleigh, NC, waters.
27613
5700 Oak Forest 7/24/2023 7/24/2023 Fuel spill of belly tank from Notice of Violation Vacuum and removal
Dr, Raleigh, 27616 dump truck
1653 Extine Ln, 7/25/2023 7/25/2023 Potential motor oil discharging Warning Letter None required
Raleigh, NC, to storm drain
27610
904 Ravenwood 7/26/2023 7/27/2023 Creek water has turned orange Investigated and found not to be a None required
Dr, Raleigh, NC, water quality concern; no further
27606 action taken
6712 Millbridge Ct, 7/27/2023 7/27/2023 Potential SSO constantly Investigated and found not to be a None required
Raleigh, NC, occurring water quality concern; no further
27615 action taken
5429 Kissimmee 7/27/2023 7/27/2023 Vehicle has motor oil Warning Letter Absorbent application
Ln, Raleigh, NC, constantly leaked onto surface
27616
7900 Twin Oak Ct, 7/31/2023 7/31/2023 SSO —940 gallons discharged, Referred to proper authority Vacuum and removal
Raleigh, NC, with 940 gallons reaching
27615 surface waters.
7840 Alexander 8/5/2023 8/8/2023 Pop-up car wash, not collecting Warning Letter None required
Promenade PI, wastewater and discharge has
potential to enter storm drain
Rev. 8.1.2022 48

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Address R Date Date
eived Responded Description Enforcement Remediation Actions
Raleigh, NC,
27617
Wild Wood Forest 8/7/2023 8/7/2023 Bucket of oil spilled at Unknown responsible party; City of Sweeping and removal
Dr& Perry Creek intersection of Perry Creek Raleigh remediated
Rd, Raleigh, NC, Road and Wildwood Forest
27616 Drive
7105 River Birch 8/8/2023 8/8/2023 Concrete slurry going into Notice of Violation Sweeping and removal
Dr, Raleigh, NC, storm drain
27613
3423 Streams of 8/8/2023 8/8/2023 Possible SSO from adjacent Investigated and found not to be a None required
Fields Dr, Raleigh, property water quality concern; no further
NC, 27604 action taken
12208 Breton Ln, 8/8/2023 8/9/2023 Noticed consecutive instances Warning Letter Dog waste bag removed
Raleigh, NC, of dog waste being thrown into
27613 storm system
1825 Wilshire Ave, 8/8/2023 8/8/2023 Reported that paint had been Investigated and found not to be a None required
Raleigh, NC, dumped into storm drain water quality concern; no further
27608 action taken
3428 Althorp Dr, 8/11/2023 8/14/2023 Potential chemicals, pollutants Investigated and found not to be a None required
Raleigh, NC, and contaminants spilled on water quality concern; no further
27616 public street that may make action taken
their way to storm water
system.
500 Creekside Dr, 8/11/2023 8/14/2023 Soap suds observed at an Warning Letter None required
Raleigh, NC, outfall along Crabtree Creek
27609 greenway
W Cabarrus St& 8/15/2023 8/15/2023 Potential white substance in Investigated and found not to be a None required
Rosengarten Aly, creek water quality concern; no further
Raleigh, NC, action taken
27603
1115 Temple St, 8/16/2023 8/16/2023 City of Raleigh SSO - 3600 Referred to proper authority Vacuum and removal
Raleigh, NC, gallons discharged with all
I 27609 reaching surface waters.
E Cabarrus St & S 8/21/2023 8/21/2023 Drilling mud entered storm Notice of Violation Vacuum and removal
East St, Raleigh, drain
NC, 27601
Rev. 8.1.2022 49

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Address R Date Date
eived Responded Description Enforcement Remediation Actions
112 Cox Ave, 8/22/2023 8/22/2023 Possible condensate creating Investigated and found not to be a None required
Raleigh, NC, dry weather flow water quality concern; no further
27605 action taken
2609 Spring 8/22/2023 8/22/2023 City of Raleigh SSO —1750 Referred to proper authority Vacuum and removal
Forest Rd, gallons discharged, with all
Raleigh, NC, going to surface waters.
27616
301 Glenwood 8/23/2023 8/23/2023 Potential grease overflow Warning Letter Vacuum and removal
Ave, Raleigh, NC,
27603
701 Van Buren 8/24/2023 8/24/2023 Terrible smell coming from Referred to proper authority Vacuum and removal
Rd, Raleigh, NC, creek due to possible City of
27604 Raleigh SSO
5617 Deblyn Ave, 8/24/2023 8/25/2023 Oak tree damaged power poles Notice of Violation Vacuum and removal
Raleigh, NC, resulting in one damaged pole
27612 mounted transformer.
701 Van Buren 8/24/2023 8/24/2023 City of Raleigh SSO —1500 Referred to proper authority Vacuum and removal
Rd, Raleigh, NC, gallons discharged with all
27604 being discharged to surface
waters
4225 Glenwood - 8/26/2023 8/28/2023 Hoses running parallel to 1-440 Investigated and found not to be a None required
Ave, Raleigh, NC, East near Crabtree Creek and water quality concern; no further
27612 _ _potentially discharging water action taken
5042 Tryon Rd, 8/27/2023 8/27/2023 City of Raleigh SSO —1900 Referred to proper authority Vacuum and removal
Raleigh, NC, gallons discharged, with 1900
27606 gallons reaching surface
waters
1550 N Raleigh - 8/28/2023 8/28/2023 Sanitary sewer spill from Notice of Violation Vacuum and removal
Blvd, Raleigh, NC, cleanout— blockage removal
27610 performed by Raleigh Water
1603 Hillsborough 8/30/2023 8/30/2023 Possible chlorinated pool Investigated and found not to be a None required
St, Raleigh, NC, discharge water quality concern; no further
27605 action taken
2611 Churchill Rd, 8/30/2023 8/31/2023 Possible pool dewatering Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27608 action taken
Rev. 8.1.2022 50

CS NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address R Date Date
eived Responded Description Enforcement Remediation Actions
4225 Woodlawn 8/30/2023 8/31/2023 Trash can potentially washed Investigated and found not to be a None required
Dr, Raleigh, NC, out every Wednesday into water quality concern; no further
27616 storm system. action taken
810 Suffolk Blvd, 8/30/2023 8/31/2023 16" Corrugated Pipe sticking Notice of Violation Vacuum and removal
Raleigh, NC, out of ground with discharge
27603 that has foul odor
5429 Kissimmee 9/5/2023 9/6/2023 Potential oil spill in road Investigated and found not to be a None required
Ln, Raleigh, NC, water quality concern; no further
27616 action taken
S King Charles Rd 9/6/2023 9/6/2023 - 100 gallons of fuel discharged Notice of Violation Vacuum and removal
& Kennedy St, to street; no storm drains
Raleigh, NC, currently affected
27610
6221 Litchford 9/11/2023 9/11/2023 Paint thinner discharged into Notice of Violation Excavation and removal
Forest Ln, NC, drain
27615
Pine Barren Ln, 9/13/2023 9/13/2023 Possible motor oil being Investigated and found not to be a None required
Raleigh, NC, discharged into road water quality concern; no further
27610 action taken
4309 Auburn Hills 9/16/2023 9/18/2023 Tenant dumped landscaping Warning Letter Sweeping and removal
Dr, Raleigh, NC, material into storm drain.
27616
7505 Wilderness 9/19/2023 9/19/2023 Vehicle fluid(s) potentially Investigated and found not to be a Sweeping and removal of
Rd, Raleigh, NC, leaking and possibly going into water quality concern; no further remaining oil spot on road.
27613 storm drain action taken _
3926 Marcom St, 9/19/2023 9/20/2023 Paint potentially dumped onto Warning Letter None required
Raleigh, NC, ground/inside a corrugated
27606 pipe _
2709 Dahlgreen 9/20/2023 9/21/2023 Neighbor, who owns a power Warning Letter None required
Rd, Raleigh, NC, washing company, is
27615 potentially discharging
wastewater to the curb and it is
entering the nearby storm drain
6685 Falls of 9/25/2023 9/25/2023 Potentially washing dumpsters Investigated and found not to be a None required
Neuse Rd, out with chemicals and the water quality concern; no further
Raleigh, NC, wash water is entering storm action taken
27615 drain
Rev. 8.1.2022 51

CS NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Address R Date Date
eived Responded Description Enforcement Remediation Actions
4008 Laurel Hills 9/28/2023 9/28/2023 Potential hydraulic oil spill Investigated and found not to be a None required
Rd, Raleigh, NC, water quality concern; no further
27612 action taken
5438 Allen Dr, 9/29/2023 9/29/2023 Oily film reported in creek Investigated and found not to be a None required
Raleigh, NC, water quality concern; no further
27610 action taken
SWS = Solid Waste Services
SSO=Sanitary Sewer Overflow
D.3 Program Assessment
Staff continue to meet all IDDE permit requirements. Staff completed 200 site investigations during the reporting period- an approximate 10%
increase from the previous year. These investigations revealed a decrease of approximately 15% and 60% in City of Raleigh SSOs and private
SSOs respectively, along with a 50% decrease in fats, oils, and grease (FOG)discharge sources. The increase in investigations and decrease
in SSOs and FOG discharge sources may be a result of increased staff and public awareness due to the effectiveness of the City's Education
and Outreach program. Conversely, staff noted an approximate 60% increase in oil/automotive source pollutants which tend to be associated
with vehicle accidents and maintenance activities. Staff is considering focused outreach in the coming year to address these sources and
target audiences. Staff review of the previous reporting year's activities and processes on January 6, 2023 did not warrant any immediate
changes to the program. Staff reviewed and updated all program plans and SOPs in April 2023 and completed the self-audit in May 2023. The
self-audit did not identify any gaps in compliance. A new position approved in the Fiscal Year 2024 budget and hired during the next reporting
period will split responsibilities between this program and the Water Quality Monitoring program. This will add staff capacity to further assist
with response, investigation, and outfall inspections for IDDE, as well as increase staff support for monitoring. In anticipation of the City's new
permit, staff continue efforts to update the Major Outfall Inventory to remove outfalls located outside the City limits and located within other
MS4s (i.e. NCSU and NCDOT).
Rev. 8.1.2022 52

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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 with oversight by NCDEQ. 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 NCDEQ'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 NCDEQ 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 NCDEQ. The City also regularly receives and responds to calls and concerns from citizens related to runoff from construction
sites.
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 FY2022-2023.
Rev. 8.1.2022 53

°C $
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Table E-1: Construction Site Runoff Controls Metrics and Results
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section E.2 (a) Implement standard Implement standard Report number of Inspections: 13,673
The permittee has a construction site inspection construction site inspection inspections and NOVs: 27
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.
Rev. 8.1.2022 54

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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 NCDEQ "Stop Mud"
hotline (1-866- STOPMUD)
to meet the requirements
of this paragraph.
Rev. 8.1.2022 55

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section E.2 (c) Maintain the stormwater Maintain the stormwater N/A, see reporting metrics 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 NCDEQ "Stop Mud"
hotline (1-866- STOPMUD)
to meet the requirements
of this paragraph.
Part II Section E.2 (d) Coordinate with NCDEQ for Coordinate with NCDEQ for Report number of plans that 18
For new development and development and development and required NCDEQ
redevelopment projects to redevelopment projects by redevelopment projects by coordination for entities with
be built within the entities with eminent domain entities with eminent domain eminent 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.
Rev. 8.1.2022 56

C ) NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
E.3 Program Assessment
The Construction Site Runoff Control Program continued to meet all permit requirements this reporting period despite conducting fewer routine
inspections than in previous reporting periods. The decrease in routine inspections could be due to program staff turn-over earlier in the
reporting period; the program has since become fully staffed and it is expected that routine inspections and site compliance throughout the City
will subsequently increase. The program has created three separate inspection groups with dedicated experienced managers supervising each
group to improve enforcement efficiency as development throughout Raleigh continues to increase. Staff continue to issue Notice of Violations
and civil penalties; non-traditional enforcement tools such as withholding Certificate of Occupancy, preventing building permit issuance, and
halting trade inspections are also being utilized 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.
Rev. 8.1.2022 57

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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, landscape architect, or licensed
surveyor 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 FY2022-2023.
Rev. 8.1.2022 58

$C4
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Table F-1: Post-Construction Site Runoff Controls Metrics and Results
Permit FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Reference/BMP
Part II Section Review the UDO and Review UDO and Stormwater N/A, see reporting metrics in 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 1,259
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 1,130
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 18 NOVs issued;
the MS4 15A NCAC 02H .1000 and .1000 and make documents $37,500 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.
Rev. 8.1.2022 59

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Reference/B M P
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 to ensure 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 112
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.
Part II Section Review annually developer Review annually developer training Report types of fact sheets, Web-based; Web-
F.2 (e) training and outreach and outreach materials and educational brochures, and other based materials:
Educational materials and update, as update, as needed. materials made available to Annual Inspection
materials and needed. developers requirements, As-
training for Conduct training for developers. Built requirements,
developers Conduct training for Outreach centered
developers. Evaluate the program around Stormwater
effectiveness annually and notify Design Manual
Evaluate the program the Water Quality Manager of Update and Neuse
effectiveness annually and program modifications. Rules Change
Rev. 8.1.2022 60

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Reference/B M P
notify the Water Quality Report training events held for On 4/20/2023,
Manager of program developers and number of Stormwater held a
modifications. participants webinar for the
Notify the Water Quality design community
Manager of program focused on the
modifications. updated Neuse
Rules with over 100
individuals
attending,
representing 50
companies and/or
organizations.
Quarterly
development
stakeholder
meetings were also
held (avg. 12
participants per
meeting).
Rev. 8.1.2022 61

°C ;$
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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 FY2022-2023.
Table F-2: Post-Construction Site Runoff Controls Program Element Metrics and Results
Permit FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Reference/BMP
Part II Section Review annually the DEQ Review annually the DEQ Report whether UDO was updated (Y/N) Y; see Part II
F.3 model ordinance and model ordinance and Section A.1
Design post- regulations for changes regulations for changes
construction affecting the City's post- affecting the City's post-
practices that construction practices. construction practices.
meet or exceed Incorporate and submit Incorporate and submit
state rules revisions to DEQ for revisions to DEQ for
approval, as needed. approval, as needed.
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.
Rev. 8.1.2022 62

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Reference/BMP
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.
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
Rev. 8.1.2022 63

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Reference/B M P
& Maintenance Plan and Operation & Maintenance Number of City projects approved for post- 16
update, if necessary. Plan and update, if construction compliance
necessary.
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.
Part II Section Document design Document design Report the number of linear projects with 2
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.
Rev. 8.1.2022 64

C ) NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
F.4 Program Assessment
During FY2022-2023 the Stormwater Plan Review group maintained a full staff and continued to meet all permit requirements. The updates to
the Neuse Rules were incorporated into the UDO and became effective on 5/1/2023. Work on the updated Stormwater Design Manual
resumed and a public draft was released in September 2023. 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 improved staff capacity this reporting period by filling vacant positions. While the number of sites with
SCMs and inspections increased during the reporting period, staff were able to maintain the same compliance rate across all SCM sites. Staff
will continue to regularly review the program plan, and further develop SOPs to expand program effectiveness and operation with the extra
support from the newly filled full-time staff positions. Staff aims to continue effectively administering the program, as well as improving
enforcement efforts to increase overall compliance with the program.
Rev. 8.1.2022 65

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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 FY2022-2023.
Table G-1: Pollution Prevention and Good Housekeeping for Municipal Operations Metrics and Results
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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:
inventory of municipally- Maintain and update municipal SCMs by type Wet Pond: 4
owned SCMs. inventory of (requiring annual Underground Detention: 3
municipally-owned inspection) Swale: 1
Evaluate the program SCMs. Sand Filter: 1
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: 19
Rev. 8.1.2022 66

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section G.2 (b) Review annually the Asset Review annually the Report number of 117 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 One summary memorandum
Industrial Facility Industrial Facility taken at municipal was sent to facility contacts;
Inspection Program Plan Inspection Program facilities or operations SPPP was updated, training
guidance and update, as Plan guidance and completed, and inspections
needed. update, as needed. resumed
Inspect and document Inspect and document
municipal facility municipal facility
inspections, including any inspections, including
corrective actions. any corrective actions.
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 (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 either
facility owning facility owning corporate limits with complete or draft 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.
Rev. 8.1.2022 67

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section G.2 (d) Review facility, operation, Review facility, Report number of spill A city-wide spill response
Spill response procedures for and Citywide spill operation, and Citywide response procedures document was reviewed and
municipal facilities and response procedures and spill response developed/updated updated in August 2023
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. Several facilities have
Manager of program Quality Manager of cleaning and maintain oil/water
modifications. program modifications. separators, and SPPPs or
SWPPPs have been completed
or are in final draft form for
these facilities.
Rev. 8.1.2022 68

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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 is
wash water from entering currently being updated and
the storm sewer system includes draft language to
to the extent feasible include structural measures to
prevent wash water 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 by Stormwater
staff prior to approval.
Part II Section G.2 (f) Document street, road, Document street, road, Report maintenance 7,975 miles swept
Streets, roads, and public and public parking lot and public parking lot activities completed in the
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.
Rev. 8.1.2022 69

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section G.2 (g) Review annually the MS4 Review annually the Report number of 59; all 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 and
measures (SCMs) and the storm Operation and SCM Operation and certified reports are pending
sewer system. Maintenance Plan, and Maintenance Plan, and submittal
revise, as needed. revise, as needed. Report number of storm Number of bridges inspected: 6
sewer conveyance
Review annually the Asset Implement inspection system components Number of crossline
Management SCM and maintenance inspected conveyances (culverts)
Operation and programs documented inspected: 2,289
Maintenance Plan, and in the MS4 Operation
revise, as needed. and Maintenance Plan Linear footage of drainage
and Asset Management system that has had CCTV
Establish service level SCM Operation and inspection: 76,559
agreements (SLAs)with Maintenance Plan.
facility owning Linear footage of drainage
departments address Review existing SLAs system that has had pole
shared ownership and and coordinate with camera inspection: 461,790
maintenance facility owning
responsibilities and departments, if Number of catch basins
outstanding maintenance necessary. inspected:742
needs for SCMs located at
municipal facilities. Evaluate the program Number of junctions inspected:
effectiveness annually 13
Rev. 8.1.2022 70

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Review existing SLAs and and notify the Water Report maintenance and Number of storm assets flushed
coordinate with facility Quality Manager of repair actions and/or vacuumed: 868
owning departments, if program modifications. Linear feet of stormwater pipe
necessary. flushed and/or vacuumed:
26,222
Implement inspection and
maintenance programs Number of crossline
documented in the MS4 conveyances (culverts)
Operation and maintained: 2,772
Maintenance Plan and
Asset Management SCM Number of inlet/junction tops
Operation and reset: 517
Maintenance Plan.
Number of inlets/junctions
Evaluate the program maintained: 1,106
effectiveness annually and
notify the Water Quality Number of pipes
Manager of program repaired/replaced:56
modifications. Linear feet or channels
redefined:1,240
Number of bridges repaired:12
Number of culverts
repaired:2
Number of catch basins
repaired: 86
Number of junctions
repaired:12
Rev.8.1.2022 71

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section G.2 (h) Review annually and Review annually and Report types of training 229 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 iLearn and
Involvement Plan, in and Public Involvement PPGH training SuccessFactors portals.
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.
Rev.8.1.2022 72

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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) Vehicle Field Services/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
Rev.8.1.2022 73

1C ;$
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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 year, staff have completed more than 77 site investigations, which is
approximately a 14% increase from the previous year. All 30 City-wide high priority facilities were inspected at least once; additional
inspections include return inspections and/or follow-up on high priority sites and low-priority facilities (defined by low potential to generate
stormwater pollution). One summary memorandum was distributed that resulted in the fulfillment of Site Pollution Prevention Plan requirement
deficiencies. All City-owned regulatory compliance SCMs installed prior to this reporting period have been inspected with certified reports
pending submittal. An earlier inspection schedule may be implemented to ensure inspections correspond with reporting annual timeframes.
Lastly, the SCM O&M Plan was reviewed during this reporting year and minor updates were completed.
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 NCDEQ 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 NCDEQ to report the issue. If an illicit discharge is discovered during the inspection of a 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 FY2022-203.
Rev. 8.1.2022 74

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Table H-1: Program to Monitor and Control Pollutants in Storm Water Discharges to Municipal Systems Metrics and Results
Permit FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Reference/BMP
Part II Section Review at least once per permit cycle Review at least once per permit cycle the Report number of 71
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 71
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
priorities facilities - inspected
Review inspections results and Review inspections results and identify annually; Privately
identify program priorities, as needed. program priorities, if necessary. owned facilities at
Evaluate the program effectiveness Evaluate the program effectiveness tease hreo every
annually and notify the Water Quality annually and notify the Water Quality e yeece ars (and moron
Manager of program modifications. Manager of program modifications. more typically an annual basis
as
staff capacity
allows); Non-
exposure sites
inspected once
every permit cycle
Part II Section Conduct inspection activities based on Conduct inspection activities based on Report number of 9
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 1
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 to monitor and control pollutants in stormwater discharges to municipal systems. Within the
reporting period all industrial sites located within the City's jurisdiction were visited and evaluated by staff, as documented with inspection
Rev. 8.1.2022 75

°C ;$
NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
reports and photos. As in previous years, staff met and reviewed the previous reporting year's activities and processes on January 6, 2023,
and did not recommend any immediate changes. The self-audit completed in May 2023 did not identify any gaps in compliance. In June 2023,
staff reviewed and updated all program plans and SOPs. A shared calendar has been implemented for tracking potential compliance concerns
referred to NCDEQ. No substantial changes to program implementation will be made per the reviews and assessment.
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 FY2022-2023.
Table I-1: Water Quality Assessment and Monitoring Metrics and Results
Permit FY2023 FY2024 Reporting Metric(s) 2022-2023
Reference/BMP
Part II Section 1.2 (a) Review annually the Review annually the Report updates and Updated file storage location and
Water Quality Water Quality Water Quality revisions to the Water record keeping information.
Assessment and Assessment and Assessment and Quality Assessment and Submitted Plan to NCDEQ on
Monitoring Plan Monitoring Plan and Monitoring Plan and Monitoring Plan and the date 5/9/2023.
update, as needed. update as needed. submitted to NCDEQ, if
Evaluate the program applicable
Evaluate the program effectiveness annually
effectiveness annually and notify the Water
and notify the Water Quality Manager of
Quality Manager of program modifications.
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
Rev. 8.1.2022 76

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit FY2023 FY2024 Reporting Metric(s) 2022-2023
Reference/BMP
Quality Assessment and Quality Assessment and Report number of samples 1200
Monitoring Plan. Monitoring Plan. collected
Provide the current Provide the current
Water Quality Water Quality
Assessment and Assessment and
Monitoring Plan to Monitoring Plan to Report parameters analyzed Total suspended solids, ammonia,
NCDEQ, if revised. NCDEQ, 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
1.3: Program Assessment
The Water Quality Assessment and Monitoring program continues to fulfill permit requirements. The Assessment and Monitoring Plan was
reviewed and updated on January 12, 2023. Changes were made to reflect the updated file storage location of monitoring data. The Plan was
submitted to NCDEQ on May 9, 2023.
Staff sampled the same 18 long-term watershed monitoring locations during this reporting period. 1,200 samples were collected, an increase
from last reporting period due to the timing of an additional quarterly sampling event falling within this reporting period. Data analysis revealed
high geometric mean concentrations of total nitrogen at two sites (Pigeon House Branch and Rocky Branch). Both watersheds are highly
urbanized and elevated TN concentrations could be due to pet waste or fertilizer runoff. Ammonia as Nitrogen (NH3)analysis resulted in 90%
of samples reporting as non-detects with a practical quantification limit (PQL) of 0.1 mg/L. Of the 10% of samples not reported as non-detect,
Richland Creek's median value was highest of all sites (0.12 mg/L). Total phosphorus (TP)analysis resulted in a majority of samples (-80%)
reported as non-detects with a PQL of 0.05 mg/L. Little Brier Creek and Crabtree Creek had the highest TP concentrations across the reporting
period. Similarly, elevated TSS and turbidity concentrations were reported for both sites. Little Brier Creek had the highest median value of TSS
and turbidity of all 18 sites; this watershed is a rapidly developing area and data point to sediment being a concern in this watershed. During
this reporting period, a total copper analysis was performed to evaluate historical data and investigate potential correlation between TSS,
turbidity and total copper to better understand potential sources in Pigeon House Branch. No strong linear correlation was observed when a
regression analysis was performed between constituents. Correlation coefficients for total copper and turbidity, and total copper and TSS were
—0.6 and —0.5 respectively, indicating further evaluation would be warranted to fully understand copper sources.
Rev. 8.1.2022 77

NPDES MS4 Permit Annual Report
XXX Permit No. NCS000245
Results of the self-audit, completed in May 2023, suggest staff should prepare to update the monitoring program, its Assessment and
Monitoring Plan, and internal SOPs to comply with revised requirements of the new permit. A new position will be hired next reporting period
and split responsibilities between this program and the IDDE program. This will add staff capacity to enhance water quality monitoring efforts,
improve the City's ability to further investigate and evaluate atypical data, and employ new methods and/or equipment to help identify potential
pollutant sources.
Rev. 8.1.2022 78

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
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 TMDLs are regional TMDLs. The City is addressing the Falls Lake TMDL through its participation in
the ongoing 4B Nutrient Management Strategy in collaboration with other municipalities through the Upper Neuse River Basin Association. The
City is addressing the Neuse River Estuary TMDL 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.
Pigeon House Branch and Perry Creek watersheds have local TMDLs for fecal bacteria and copper, and benthos, respectively. The entirety of
Pigeon House Branch watershed and a portion of Perry Creek watershed are within the City's MS4. Waste Load Allocations (WLAs) have not
been assigned to the City's MS4 for these TMDLs. The City has a consulting firm under contract to evaluate strategies and tailor or expand
BMPs within the scope of the six MCMs to enhance water quality recovery strategies that acknowledge the TMDLs and reduce pollutants of
concern. The City, in coordination with NCDEQ, is utilizing an acceptable alternative approach to develop draft Watershed Action Plan (WAP)
documents and databases for the TMDL watersheds to guide future implementation and address pollutants of concern in accordance with Part
111.4 of the City's MS4 permit.
J.2 Best Management Practices
Table J-1 includes a brief description of the TMDLs 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 FY2022-2023.
Rev. 8.1.2022 79

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Table J-1: TMDL Metrics and Results
FY20 FY2024 Reporting Metric(s) 2022-2023 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
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.
Rev. 8.1.2022 80

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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.
Rev. 8.1.2022 81

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 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
Rev. 8.1.2022 82

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Permit Reference/BMP FY2023 FY2024 Reporting Metric(s) 2022-2023 Results
Part II Section J.4. If no Develop Watershed Complete Report the development/maintenance of Draft Watershed Action Plan
MS4 NPDES regulated Action Plans for development of the Watershed Action Plans and documents and databases for Perry
waste load allocation Pigeon House Watershed Action modifications, if necessary Creek and Pigeon House Branch
(WLA) is specified in the Branch and Perry Plans for Pigeon watersheds are under development.
TMDL Creek that include House Branch and This alternative approach is
strategies and tailor Perry Creek that underway with continued
BMPs to address the include strategies coordination with NCDEQ staff.
POC in the and tailor BMPs to
watersheds. address the POC in Report BMPs implemented I Existing/on-going BMPs include the
the watersheds. City's six MCMs as required by the
Implement the NPDES permit. In addition, the City
Watershed Action Implement the has proactively implemented
Plans. Watershed Action measures such as the Raleigh
Plans. Rainwater Rewards program and
Evaluate the program Green Stormwater Infrastructure
effectiveness Coordinate with the retrofits, stream restoration projects,
annually and notify Department of Water partnership initiatives with local
the Water Quality Resources to universities and community groups,
Manager of program integrate the Pigeon watershed studies, and more.
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.
Rev. 8.1.2022 83

ONPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
J.3 Program Assessment
Working with an outside consultant and coordinating with NCDEQ, staff have been evaluating strategies to tailor or expand BMPs within the
scope of the six MCMs to enhance water quality recovery strategies that acknowledge the TMDL and reduce pollutants of concern. A feasibility
study was completed resulting in the selection of Watershed Action Plans (WAP) as the acceptable alternative approach to address Raleigh's
local TMDLs (without assigned WLAs) per Section J.2 of the permit. WAP documents and databases for Perry Creek and Pigeon House
Branch watersheds are under development, with completion expected within the next reporting yea. Existing measures already underway in
these watersheds will be documented within the final WAPs.
Rev. 8.1.2022 84

(2) NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
Section K: Annual Assessment and Annual Summary
This section assesses overall compliance with the permit during the FY2022-2023 reporting period and
documents identified program improvements that will be implemented in FY2023-2024, including changes
to the SWMP as required by the new permit.
K.1 Assessment
During the 2022-2023 reporting period, City staff continued to develop and improve program components
required by the City MS4 permit based on the August 2022 NCDEQ compliance audit recommendations.
In addition, City staff completed a self-audit and gap analysis in May 2023, utilizing the NCDEQ Self-Audit
template. Staff reviewed all programs, conducted eight site visits, and documented that while the City is
meeting and/or exceeding all permit requirements, there are opportunities for continuous improvement in
program areas. Consequently, since the self-audit was completed, City teams responsible for
implementing each MCM made minor updates and adjustments to further enhance their programs.
Findings from completed assessments have been summarized at the end of each section in this report.
K.2 Program Improvements
Following the program enhancements implemented per the May 2023 self-audit, the SWMP was updated,
provided for public comment, and submitted to NCDEQ. During this reporting period, program FY24-27
schedules were updated, ensuring continuance and completion of annual tasks. The organizational chart
was updated to reflect organizational changes and the receiving waters list was updated to reflect the
current EPA-approved NCDEQ Final 303(d) List. Lastly, Table 10- Program Elements for Post-
Construction Site Runoff Controls was expanded to incorporate Part II Sections F. 3-7 of the permit
(sections included in the self-audit report that needed to be added to the SWMP). The updated SWMP
supports the Stormwater Division's ability to meet and exceed permit requirements by serving as an
effective mechanism to track all required activities and related metrics throughout the permit year.
A concise summary of data for each MCM, as required by the SWMP, is outlined in each section of the
report. These summaries describe staff effort, program effectiveness, and changes and improvements
implemented during the reporting period. While several programs experienced staff turnover during the
reporting year, the programmatic achievements were not significantly impacted and were comparable to
previous years. The City proactively added an additional metric under Section G: PPGH for Municipal
Operations (Part II Section G.2 (f))to include miles swept during maintenance activities.
The City's annual review and maintenance of all legal authorities to effectively meet all permit
requirements resulted in updates to the Uniform Development Ordinance to comply with changes in the
readopted Neuse Nutrient Strategy Stormwater Rule (15A NCAC 02B .0711). In addition, enforcement
actions were conducted over this reporting year in the Illicit Discharge Detection and Elimination,
Construction Site Runoff Controls & Post-Construction Site Runoff Controls programs to meet and
exceed permit compliance.
K.3 2023-2024 Program Initiatives
This next reporting year will bring significant changes to the City of Raleigh Stormwater Program.
Issuance of a new MS4 permit by NCDEQ is pending. As outlined by this new permit language, 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 also need to be updated to correspond with
Rev. 8.1.2022 85

NPDES MS4 Permit Annual Report
\\\ Permit No. NCS000245
the new permit language. Stormwater staff have engaged with a consulting firm to complete these
pending tasks within the compliance schedule.
The Stormwater Division also plans to increase staff resources for the Water Quality Assessment and
Monitoring and Illicit Discharge Detection and Elimination programs. A new full-time position was
approved in Fiscal Year 2024 and will be filled during this next reporting year to assist with anticipated
enhancements in water quality monitoring, IDDE, and dry weather flow inspections.
New Watershed Action Plans for the TMDL watersheds Pigeon House Branch and Perry Creek will be
completed during this upcoming reporting year. Staff look forward to continuing to coordinate with
NCDEQ staff on this innovative initiative.
Rev. 8.1.2022 86