1. School of Environmental and Forest Sciences, Univ. of Washington, Seattle, WA 98195. ORCID: .
2. Associate Professor, School of Environmental and Forest Sciences, Univ. of Washington, Seattle, WA 98195.
3. Retired Chemist, King County Environmental Lab., 322 W Ewing St., Seattle, WA 98119-1507.
4. Research Professor, School of Environmental and Forest Sciences, Univ. of Washington, Seattle, WA 98195 (corresponding author). ORCID: .