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      Department of Public Works Bureau of Sanitation


"Environmentally-Sensitive Area" means an area in which plant or animal life or their habitat are either rare or especially valuable because of their special nature or role in an ecosystem and which would be easily disturbed or degraded by human activities and developments. Ground water recharge basins, designated habitat, natural water courses and blue line streams are examples of environmentally sensitive areas.


Implement stormwater BMPs to retain or treat the runoff from a storm event producing 1/2 inch of rainfall in a 24 hour period. A signed certificate from California licensed civil engineer or licensed architect that the proposed BMPs meet this numerical threshold standard is required.
Post development peak stormwater runoff discharge rates shall not exceed the estimated pre-development rate for developments where the increase peak stormwater discharge rate will result in increased potential for downstream erosion.
Concentrate or cluster development on portions of a site while leaving the remaining land in a natural undisturbed condition.
Limit clearing and grading of native vegetation at the project site to the minimum needed to build lots, allow access, and provide fire protection.
Maximize trees and other vegetation at each site by planting additional vegetation, clustering tree areas and promoting the use of native and/or drought tolerant plants.
Promote natural vegetation by using parking lot islands and other landscaped areas.
Preserve riparian areas and wetlands.
The owner(s) of the property will prepare and execute a covenant and agreement (Planning Department General Form CP-6770) satisfactory to the Planning Department binding the owners to post construction maintenance of the structural BMPs in accordance with the Standard Urban Stormwater Mitigation Plan and or per manufacturerÕs instructions (obtain clearance letter from Watershed Protection Division, Bureau of Sanitation).



A complete handbook titled "Development Best Management Practices Handbook, Part B – Planning Activities" describing the above requirements in detail is available here.

Related Internal Links

Main SUSMP Page

SUSMP Infiltration Requirements and Guidelines [pdf 49kb]

Flow Chart of the Plan Review and Approval Process

What to Submit?

SUSMP Fees [PDF 143Kb]


Redevelopment Definition

Development BMPs Handbook Part B: Planning Activities

SUSMP Conference

Contact Us

Related External Links

State Water Resources Control Board SUSMP Website