Low Impact Development Standards

Low Impact Development Standards image

The County of Los Angeles Department of Public Works has prepared the Low Impact Development (LID) Standards Manual to comply with the requirements of the National Pollutant Discharge Elimination System Municipal Separate Storm Sewer System Permit for stormwater and non-stormwater discharges from within the coastal watersheds of Los Angeles County including the Marina del Rey Watershed.

The LID Standards Manual provides guidance for the implementation of stormwater quality control measures in new development and redevelopment projects in unincorporated areas of the County. The LID Standards Manual is intended to improve water quality and mitigate potential water quality impacts from stormwater and non-stormwater discharges.

The LID Standards Manual addresses the following objectives and goals:

  • Decrease the adverse impacts of stormwater runoff from development and urban runoff on natural drainage systems, receiving waters, and other water bodies;
  • Minimize pollutant loadings from impervious surfaces by requiring development projects to incorporate properly-designed, technically-appropriate best management practices and other LID strategies; and
  • Minimize erosion and other hydrologic impacts on natural drainage systems by requiring development projects to incorporate properly-designed, technically appropriate hydromodification control development principles and technologies.

The manual includes design considerations, details and specifications as well as operation and maintenance requirements for items such as permeable pavement, vegetative biofiltration, and retention basins.

You can view a PDF copy of the Low Impact Development Standards Manual here .