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      Department of Public Works Bureau of Sanitation


Industrial/Commercial Developments of one acre or more of impervious area.

"Industrial/Commercial Facility" means any facility involved and/or used in the production, manufacture, storage, transportation, distribution, exchange or sale of goods and/or commodities, and any facility involved and/or used in providing professional and non-professional services. This category of facilities includes, but is not limited to, any facility defined by the Standard Industrial Classification (SIC). Facility ownership (federal, state, municipal, private) and profit motive of the facility are not factors in this definition.

"Commercial Development" means any development on private land that is not heavy industrial or residential. The category includes, but is not limited to: hospitals, laboratories and other medical facilities, educational institutions, recreational facilities, plant nurseries, car wash facilities, mini-malls and other business complexes, shopping malls, hotels, office buildings, public warehouses and other light industrial complexes.


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.
Provide storm drain system Stenciling and Signage (only applicable if a catch basin is built on-site).
Properly design outdoor material storage areas to provide secondary containment to prevent spills.
Properly design trash storage areas to prevent off-site transport of trash.
Provide proof on ongoing BMP Maintenance of any structural BMPs installed.
Design Standards for Structural or Treatment control BMPs:
Post-construction treatment control BMPs are required to incorporate, at minimum, either a volumetric or flow based treatment control design or both, to mitigate (infiltrate, filter or treat) storm water runoff on site.


Properly Design Loading/Unloading Dock Areas.
Loading dock areas shall be covered or drainage must be designed to minimize run-on and runoff of stormwater. Direct connections to storm drains from depressed loading docks (truck wells) are prohibited.
Limit amount of connected impervious surfaces by providing landscape areas or by utilizing permeable pavements where appropriate.



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