This manual provides guidance on the design and maintenance of stormwater best management practices (BMPs) for publicly maintained storm drain systems
This manual provides design criteria and guidelines for developers to assist the County of Los Angeles Department of Public Works in reviewing and approving stormwater treatment BMP designs. It focuses on facilities that will be publicly maintained, offering detailed guidance on sizing, specifications, and maintenance requirements rather than plan submittal procedures.
The document covers a wide range of unit process-based Best Management Practices (BMPs), including Dry Extended Detention Basins, Vegetated Swales, Filter Strips, Bioretention areas, Infiltration Facilities, Stormwater Wetland Basins, and Sand Filters. It also addresses proprietary devices and includes specific sections on maintenance standards, inspections, and checklists for each facility type.
The purpose is to provide design criteria and guidelines for developers, assist the County in reviewing BMP designs, and provide guidance on maintenance requirements for publicly maintained devices.
The manual specifically provides guidance for devices that are publicly maintained.