2/29/2024
1 RiversideCA.gov
1 RiversideCA.gov
CHANGES TO MUNICIPAL
STORMWATER PERMIT
MOBILITY AND INFRASTRUCTURE COMMITTEE
MARCH 14, 2024
PUBLIC WORKS DEPARTMENT
RiversideCA.gov
2 MUNICIPAL STORMWATER (MS4) PERMIT
1. 1972-Clean Water
Act established
NPDES Permit
Program
2. 1987-Amendments
requiring Municipal
Permits
3. Riverside County
Permits in 1990, 1996,
2002, 2010
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2 RiversideCA.gov
3 MS4 PERMIT (CONT)
1. Illicit Connections/Illegal Discharge Elimination Program
2. Development – Minimize Water Quality Impacts
3. Construction Inspection Program
4. Industrial/Commercial Inspection Program
5. Residential Program
6. Municipal Facilities and Storm Drain Infrastructure
7. Public Education
8. TMDL Compliance
RiversideCA.gov
4 Special thanks to Riverside County Flood Control and
Water Conservation District for their partnership:
PRINCIPAL PERMITTEE - RCFCWCD
1. Richard Boon - Watershed Division Chief
2. Rohini Mustafa – Engineering Project Manager
3. Aldo Licitra – Permit Manager
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3 RiversideCA.gov
5 SANTA ANA WATERSHED
RiversideCA.gov
6 SANTA ANA RIVER
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7 STAFF WORKING PROPOSAL
1. Regional Permit-Riverside, San Bernardino, & Orange
Counties
2. Draft released December 24, 2021
2022
January -
September
2022
October 19
Section-by-Section
discussions with RB
(Staff and EO)
Transmitted Redlined
SWP + Rationale
Letter to RB
2023
Jan - April
Resumed meetings with
RB. Reviewed Redlines.
Transmitted Supplemental
Information.
2024
1st Quarter
Release of
Tentative Order
for public review +
adoption
2024 - 2029
5th Term
Regional Permit
Implementation
RiversideCA.gov
8 1. Incremental Changes
2. State Trash Amendments
3. New Development
4. Total Maximum Daily Load
(TMDL)
5. Watershed Management
Plans (WMP)
REGIONAL PERMIT CHANGES
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5 RiversideCA.gov
9 1.Increased inspections for
industrial and commercial
businesses and construction sites
2.Increased training of City staff of
multiple departments
3.Improved tracking of various
stormwater metrics through
database development
4.Increased reporting frequency to
RWQCB
INCREMENTAL CHANGES
RiversideCA.gov
10 5.Increased monitoring of
local waterways
6.Standardized cost reporting
and tracking
7.Implement Integrated Pest
Management (IPM) in
maintenance practices
8.Increased storm drain
infrastructure maintenance
INCREMENTAL CHANGES (CONT)
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6 RiversideCA.gov
11 1. The State Trash Amendments require the City to fully capture trash from certain priority land use areas by 2030
2. October 23, 2018, the City Council approved an
Implementation Plan detailing plan of action
3. Regional Permit creates regula tory requirement to fulfill the Implementation Plan
STATE TRASH AMENDMENTS
RiversideCA.gov
12 1. Water Quality Management
Plan (WQMP)
2. Increased sizing criteria for
infiltration and biotreatment
infrastructure in WQMPs
3. Low Impact Development
requirements for ministerial
projects
NEW DEVELOPMENT
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13 ROADWAY PROJECT REQUIREMENTS
• Existing permit encourages green
infrastructure on a “do what you can, where
you can” basis, but without having to
generate a WQMP.
• Regional permit now removes the above
exemption. Projects are required to
generate WQMPs and include a site design
that is conducive to LID, incorporate source
controls and structural treatment BMPs, and
record a commitment to maintain these
BMPs in perpetuity.
• Would impact: new roadway areas
(widenings), grade separations, new
sidewalks, and new bicycle paths.
RiversideCA.gov
14 1. Middle Santa Ana River
Bacterial Indicator TMDL
2. Lake Elsinore/Canyon
Lake Nutrient TMDL
3. Regional Permit
reinforces TMDL
deadlines to comply with
water quality objectives
TMDLs
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15 1. Alternative compliance option to comply with water quality objectives
2. Plans include:
1. Assessment of watershed conditions
2. Prioritize Watershed Issues
3. List of Projects and Programs
3. Roadmap for compliance with some requirements but
does not represent compliance with TMDL deadlines
WATERSHED MANAGEMENT PLANS
RiversideCA.gov
16 CONCLUSION
Compliance Cost $
Permit Term
1990
2010
2002
1996
• Watershed
Management
Planning and Project
Implementation
• TMDLs and Trash
Amendments
• Additional Staff
Resources
We are
here
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9 RiversideCA.gov
17 STRATEGIC PLAN ALIGNMENT
Strategic Priority 4 – Environmental Stewardship
Goal 4.2 - Sustainably manage local water resources to maximize reliability and advance water reuse to ensure safe, reliable and affordable water to our community.
Strategic Priority 6 – Infrastructure, Mobility, & Connectivity Goal 6.2 - Maintain, protect and improve assets and infrastructure within the City’s built environment to ensure and enhance reliability, resiliency, sustainability, and facilitate connectivity.
RiversideCA.gov
18 RECOMMENDATION
That the Mobility & Infrastructure Committee:
1. Receive an update on the National Pollutant
Discharge Elimination System (NPDES) Municipal
Separate Storm Sewer System (MS4) Permit
changes that will impact the City of Riverside.
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