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      Department of Public Works Bureau of Sanitation


"Parking Lot" means land area or facility for the parking or storage of motor vehicles used for businesses, commerce, industry, or personal use, with a lot size of 5,000 square feet or more of surface area, or with 25 or more parking spaces.


  1. Peak Storm Water Runoff Discharge Rate: Post-development peak storm water runoff discharge rates shall not exceed the estimated pre-development rate for developments where the increased peak storm water discharge rate will result in increased potential for downstream erosion.
  2. Conserve Natural Areas
  3. Minimize Storm Water Pollutants of Concern
  4. Protect Slopes and Channels
  5. Provide Storm Drain System Stenciling and Signage
  6. Properly Design Outdoor Material Storage Areas
  7. Properly Design Trash Storage Areas
  8. Provide Proof on Ongoing BMP Maintenance
  9. Design Standards for Structural or Treatment Control BMPs: Post-construction Treatment Control BMPs are required to incorporate, at a minimum, either a volumetric or flow based treatment control design standard or both, to mitigate (infiltrate, filter, or treat) storm water runoff.


  1. Properly Design Parking Area
  2. Properly Design to Limit Oil Contamination and Perform Maintenance



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

Flow Chart of the Plan Review and Approval Process

What to Submit?


Redevelopment Definition

Development BMPs Handbook Part B: Planning Activities

SUSMP Conference

Contact Us

Related External Links

State Water Resources Control Board SUSMP Website