Thurston County Board of Health approves consolidated lakes IPM prescription after public questions about springs and chemicals

Thurston County public health staff and the county's pest and vegetation advisory committee persuaded the Board of Health to approve a consolidated integrated pest management (IPM) prescription for four county lakes — including Long Lake and Lake Lawrence — at the March 11 meeting, following public comment and a detailed staff presentation on alternatives to herbicides.

The board voted to approve the consolidated prescription after staff described the IPM decision process and monitoring requirements. The motion passed; one board member stated they were abstaining during the roll call. Names for each recorded yes vote were not provided in the transcript.

Why it matters: the consolidated prescription establishes a county-level framework that requires lake managers and contractors to evaluate prevention, manual removal, mechanical harvesting and other nonchemical approaches before using contact or systemic aquatic herbicides. Staff and the Pest and Vegetation Management Advisory Committee (PIVMACC) said the policy is intended to protect public health, water quality and recreation while allowing targeted control…