Sheetflow Erosion Control Erosion Control for the CESCL

February 1, 2021


Filed under: Article — Tags: , , — Sheetflow @ 6:39 pm

First day being retired. 25 years at two state agencies-three years at WSDOT and 22 years at the Port of Seattle. I am going to take the day off, maybe a couple days.

September 8, 2020

Biodegradable Wattles

I wrote this biodegradable wattles specification for a riverbank habitat restoration project.

I wrote the last three sentences for this particular project, which has a 2:1 slope above an intertidal river. We will place 12 inches of compost before installing native plants this winter; without the wattles, wet compost will slide to the base of the slope.


  1. Wattles shall consist of 100% biodegradable straw, coir, excelsior or compost encased in 100% biodegradable fabric or mesh.
  2.  Wattles shall be a minimum of 8 inches in diameter free of cuts tears and damage.
  3. The installation of straw wattles shall be per WSDOT Standard Plan I-30.30-00 “Wattle Installation on Slope”.
  4. Wattles shall be staked in place using wooden stakes a minimum of 16 inches long.  The stakes shall be cut flush with the top of the wattles.
  5. Wattles shall be installed on the Site 25 slope above +12 elevation.
  6. Wattles shall be installed in two rows across the slope parallel to the 12 + elevation. 
  7. Rows shall be approximately 7 feet above the +12 elevation and 7 feet below the top of the slope.

February 3, 2016

Original WSDOT Web Pages

I found the original WSDOT erosion control web pages I developed in the 1990’s.

The Washington State Department of Transportation (WSDOT) began their Construction Erosion and Sediment Control program in 1996 when they hired their first State-wide Erosion Control Coordinator, me.  My responsibility was to develop and implement the first contractor certification program (CESCL), write and publish contract specifications, and provide state-wide, consistent, technical expertise.

These are the early web pages developed for the program:

WSDOT Erosion Control Web Page 1997

WSDOT Erosion Control Web Page 1998

January 28, 2011

WSDOT Erosion Control Program 1996-1999

WSDOT Erosion Control Program 1996-1999
David S. Jenkins
Statewide Erosion Control Coordinator

WSDOT hired a full-time Statewide Erosion Control Coordinator to develop policy and oversee implementation of the WSDOT Erosion and Sediment Control Program. In addition, the Statewide Erosion Control Coordinator provides on-site technical assistance to Project Inspectors and makes field visits to highway construction sites to evaluate planning and implementation of TESC plans. This provides WSDOT with the opportunity to share successful experiences and develop consistency in program implementation.


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