WASHINGTON STATE DEPARTMENT OF ECOLOGY NOTICE OF PUBLIC COMMENT PERIOD October 2 – November 3, 2025 9805 Blomberg St SW, Tumwater, Thurston County Cleanup Site ID #3380, Facility Site ID # 8786341 Submit comments online: go.ecology.wa.gov/comment3380 Review documents online: go.ecology.wa.gov/3380 Site Background: Webster Nursery is a 300-acre tree nursery run by the Washington State Department of Natural Resources (DNR). In the past, the nursery used organochlorine pesticides, including chlordane and heptachlor. These chemicals were very effective at killing insects but are also toxic to human health. The nursery has not used insecticides since the early 1990s. In 1996 when DNR found that an underground storage tank leaked pesticides into soil and groundwater, Ecology added this site to the Contaminated Sites List. Cleanup work happened in 1996 and 2018. Now, contamination is below cleanup levels, and Ecology is ready to remove this site from the Contaminated Sites List. We will consider public input before making a final decision. Some contaminated soil deep in the ground was left behind during cleanup. An Environmental Covenant filed with Thurston County sets rules to prevent people and wildlife from being exposed to this contamination. Questions? Contact Steve Teel, site manager, at steve.teel@ecy.wa.gov or 360-890-0059. IPL0278375 Oct 3 2025