Municipal Regional Stormwater Permit (MRP 3) Resources (2022-2024)

Municipal Regional Stormwater Permit Changes Factsheet (Fall 2022) (PDF)

The San Francisco Bay Regional Water Quality Control Board (Water Board) reissued the Municipal Regional Stormwater Permit (MRP 3) and it went into effect July 1, 2022. Like the past stormwater permits, MRP 3 mandates stormwater control measures for specified development projects. MRP 3 includes several significant changes including changes to the types and sizes of regulated projects.

Key Changes Summarized in this Factsheet

Effective July 1, 2022
o Removal of the Tree Reduction Credits

Effective July 2, 2023*
o Changes to Regulated Project Thresholds
o Changes to Special Project Categories

* Until the effective date of the changes, the old definitions and categories remain in effect.

Overview of Provision C.3 of Municipal Regional Stormwater Permit (MRP) (PDF)

On October 14, 2009, the Bay Regional Water Quality Control Board (SFRWQCB), San Francisco Bay Region, issued a municipal regional stormwater permit (MRP) under the National Pollutant Discharge Elimination System (NPDES) permit program to the Alameda Countywide Clean Water Program (ACCWP). The goal of the MRP is to reduce pollution in stormwater runoff and limit increases in runoff flows from development projects. The City of Oakland, as a member of ACCWP, is a co-permittee under ACCWP’s permit and is, therefore, subject to the MRP requirements.

The SFRWQCB reissued MRP 3.0. The MRP 3.0 went into effect July 1, 2022, with further changes to the Regulated Project Thresholds effective July 1, 2023.

C.3 Stormwater Technical Guidance Manual for Developers (PDF)

This handbook is meant to assist developers, builders, and project sponsors, including postconstruction stormwater controls in their projects. Post-construction stormwater controls are required to meet local municipal requirements and state requirements in the Municipal Regional Stormwater Permit (MRP) and the Statewide Construction General Stormwater Permit (CGP).

Summary of C.3 Technical Guidance Manual Updates (February 2024) (PDF)

SF Bay Region Municipal Regional Stormwater Permit Order No. R2-2022-0018 (PDF)

This document outlines the findings, jurisdictions, and provisions of the California Regional Water Quality Control Board, San Francisco Bay Region Municipal Regional Stormwater NPDES Permit. Order No. R2-2022-0018 | NPDES Permit No. CAS612008 (May 11, 2022)

City of Oakland Stormwater Supplemental Form MRP 3.0 (PDF)

This form must be submitted with all Planning and Zoning applications for projects defined as Regulated Projects by Provision C.3 of the Municipal Regional Stormwater Permit issued under the National Pollutant Discharge Elimination System (NPDES) and is required to be reported in Oakland’s stormwater Annual Report.

Stormwater Protection Parking Lot Maintenance Tips (PDF)

Owners of parking lots and companies that maintain them are responsible for meeting the stormwater requirements of the Municipal Regional Stormwater Permit 3 (MRP 3) for pavement maintenance activities. These requirements include pollution prevention practices during construction; installation of permanent low impact development (LID) stormwater controls; and may include trash capture controls.

This factsheet provides a summary of the stormwater requirements that apply to parking lot pavement reconstruction projects and other non-road related pavement projects. You can find details on these requirements on the Clean Water Program website: https://cleanwaterprogram.org/...