Temporary Erosion and Sediment Control Manual

Publication Number
M 3109
Publication Version
M 3109.02
Publication Date
Manual Manager
Jeannie McCully
Engineering and Regional Operations Development Division, Design Office

The Temporary Erosion and Sediment Control Manual (TESCM) replaces Chapter 6 and Appendix 6A of the Washington State Department of Transportation (WSDOT) Highway Runoff Manual. It outlines WSDOT’s policies for meeting the National Pollutant Discharge Elimination System (NPDES) Construction Stormwater General Permit requirements and the requirements in Volume II of the stormwater management manuals published by the Washington State Department of Ecology.

The TESCM is intended for use during the design, permitting, and construction phases of transportation construction projects. It covers:

  • TESC plan design and implementation
  • TESC BMP application and installation
  • SPCC plans
  • Discharge sampling and reporting
  • Site management and documentation
  • Compliance-related issues

8,683 animals crossed the Snoqualmie Pass East Project area

as recorded by WSDOT and partners in 2020 and 2021.

46% increase in Amtrak Cascades ridership to 251,000 passengers

in 2021 compared to 172,000 in 2020.

Nine wetland and stream mitigation sites across 32.7 acres added

to our monitoring program in 2021 to help offset climate change impacts.