Past Control Efforts
Woodway and Boulevard Bluffs 2020
Gilberton, Crosby, Martha Lake, Union Hill-Novelty Hill 2019
Graham and Kitsap Naval Base - Bangor 2018
The Washington State Department of Agriculture treated 1,300 acres in Pierce and Kitsap counties in 2018. Visit our 2018 eradication page for maps, environmental assessments, and more details.
Capitol Hill, Kent, Tacoma, Gig Harbor, Nisqually, Lacey and Vancouver 2016
The Washington State Department of Agriculture (WSDA) completed treatments of seven sites totaling 10,500 acres in April and May of 2016 as a result of catching 22 European spongy moths in Capitol Hill and 10 Asian spongy moths at the remaining locations. Egg masses were also located at the Capitol Hill site.
2016 USDA Spongy Moth Environmental Assessment
The U.S. Department of Agriculture's Animal and Plant Health Inspection Service (APHIS) made an environmental assessment for the 2016 Spongy Moth Cooperative Eradication Program in Washington State available for comment in March 2016. After reviewing public comments, APHIS issued a Finding of No Significant Impact (FONSI.) See the original NEPA document, the FONSI, and public comments below.
- Click here to view the NEPA document
- Click here to view the FONSI
- Click here to view comments submitted to APHIS
2016 WA State Environmental Assessment
The Washington State Department of Agriculture (WSDA), Plant Protection Division has issued a determination of nonsignificance (DNS) under the State Environmental Policy Act Rules (Chapter 197-11 WAC) for the Spongy Moth Eradication Programs. After review of a completed environmental checklist and other information on file with the agency, WSDA has determined this proposal will not have a probable significant adverse impact on the environment.
A copy of the determination of nonsignificance and checklists for each treatment site are available for review below.
The documents were available for public comment until March 30. Public comments are available below.
Seattle SEPA Checklist
Kent SEPA Checklist
Tacoma SEPA Checklist
Gig Harbor SEPA Checklist
Nisqually SEPA Checklist - Click here for map
Lacey SEPA Checklist
Vancouver SEPA Checklist
Determination of non-significance - all sites
Public Comments Received by March 30, 2016
Click here for more information about the 2015 trapping and 2016 treatments.
Yacolt (Clark County) - 2015
The Washington State Department of Agriculture (WSDA) completed treatment of a 220-acre site in Yacolt in the spring of 2015 as a result of catching 16 spongy moths in the area in the summer of 2014. Egg masses and pupal cases were also found, indicating a reproducing population was present.
- Environmental Assessment, Apr. 17, 2015 (PDF 1,775KB)
- Environmental Checklist and Determination of Nonsignificance (PDF 2,544KB)
- Map of Proposed Treatment Site (PDF 339KB)
Tukwila and Renton (King County) - 2013
The Washington State Department of Agriculture (WSDA) completed treatments of the following 180-acre site in Tukwila and Renton in the spring and summer of 2013 as a result of catching 25 spongy moths in the area in the summer of 2012. Egg masses and pupal cases were also found indicating a reproducing population was present.
Eatonville (Pierce County) - 2012
The Washington State Department of Agriculture (WSDA) completed treatment of the following 13-acre site in Eatonville in the spring of 2012 as a result of catching two spongy moths in the area in the summer of 2011. Egg masses and pupal cases were also found indicating a reproducing population was present.
Madison (Seattle) - 2006
WSDA completed treatment of the following 100-acre site in the Madison area of Seattle in the spring of 2006 as a result of catching 5 spongy moths in the area in the summer of 2005, and multiple catches in the past 3 years.
- Environmental Assessment, Apr. 11, 2006
- Determination of Nonsignificance, Mar. 6, 2006
- Environmental Checklist, Mar. 2, 2006
- Street Map of Treatment Area
Rosemont (Bellevue) - 2006
WSDA completed treatment of the following 5.5-acre site in the Rosemont neighborhood of Bellevue in the spring of 2006 as a result of catching two spongy moths in the area in the summer of 2005. Pupal cases were also found at Rosemont indicating a reproducing population was present in the area.