Legislation Details

File #: 26-243    Version: 1
Type: Report Status: Agenda Ready
File created: 4/13/2026 In control: REGULAR CITY COUNCIL AND HOUSING AUTHORITY*
On agenda: 5/5/2026 Final action:
Title: APPROVAL OF THE AMENDED AND RESTATED NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM STORMWATER PERMIT IMPLEMENTATION AGREEMENT BETWEEN THE COUNTY OF ORANGE, ORANGE COUNTY FLOOD CONTROL DISTRICT, AND PARTICIPATING ORANGE COUNTY CITIES
Attachments: 1. Agenda Report, 2. 1. Stormwater Permit Implementation Agreement
TITLE:
title
APPROVAL OF THE AMENDED AND RESTATED NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM STORMWATER PERMIT IMPLEMENTATION AGREEMENT BETWEEN THE COUNTY OF ORANGE, ORANGE COUNTY FLOOD CONTROL DISTRICT, AND PARTICIPATING ORANGE COUNTY CITIES
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DEPARTMENT: PUBLIC WORKS DEPARTMENT/ENGINEERING DIVISION
PRESENTED BY: RAJA SETHURAMAN, PUBLIC WORKS DIRECTOR
CONTACT INFORMATION: SEUNG YANG, P.E., CITY ENGINEER, (714) 754-5335

RECOMMENDATION:
recommendation
Staff recommends the City Council:
1. Approve the Amended and Restated National Pollutant Discharge Elimination System (NPDES) Stormwater Permit Implementation Agreement ("Agreement") between the County of Orange, Orange County Flood Control District, and participating Orange County cities.

2. Authorize the City Manager to execute the agreement and any related documents necessary to implement the terms of the agreement.

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BACKGROUND:
The City of Costa Mesa (City) is a permittee under the Municipal Separate Storm Sewer System (MS4) permits program, as issued by the Santa Ana Regional Water Quality Control Board, along with the County of Orange, the Orange County Flood Control District (District), and other cities in North Orange County. The cities in South Orange County are included in a separate permit, issued by the San Diego Regional Water Quality Control Board. Collectively, the administration of these permits is handled through a cooperative agreement between the County of Orange and all the cities in Orange County, formalized through an implementation agreement, which establishes a cooperative framework for implementing the Orange County Stormwater Program to meet MS4 permit requirements and improve surface water quality throughout the County.

The original NPDES Stormwater Permit Implementation Agreement was executed in 1990 and subsequently amended in 1993 and again in 2002, between the County of Orange and each of the cities, whereby the County served as the administrator of the reg...

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