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This manual also is intended to comply with Section S5.C.10 of the Phase I Municipal Stormwater National Pollutant Discharge Elimination System (NPDES) Permit.

Download here:

2021 King County Site Management Plan (2.2 MB)

Document sections:

The SiMPla is divided into the following BMP sections:

  • County Building and Properties
  • Municipal Separate Storm Sewer Systems (MS4)
  • Erosion Control

Additionally, these sections of the SiMPla prevent stormwater pollution:

  • Erosion Control
  • Water Conservation
  • King County Integrated Pesticide Management Document

Check out these sections in the 2021 SiMPla:

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