Headquarters
Location — 300 Desmond Drive SE, Lacey, WA 98503 (map to location)
Mail — PO Box 47600, Olympia, WA 98504-7600
Phone —360-407-6000
Fax — 360-407-6989
TTY for deaf or hard of hearing — 711 or 1-800-833-6388 (Washington Relay Service)
Office hours — 8 AM - 5 PM
- Travel to our headquarters via Intercity Transit bus: 62A / 62B
Regional offices
Northwest Regional Office
Counties served:
Island, King, Kitsap, San Juan, Skagit, Snohomish, and Whatcom
Location — 3190 - 160th Ave. SE, Bellevue, WA 98008-5452 (map to location)
Phone — 425-649-7000
Fax — 425-649-7098
Office hours — 8 AM - 5 PM
Southwest Regional Office
Counties Served:
Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Mason, Lewis, Pacific, Pierce, Skamania, Thurston, and Wahkiakum
Location — 300 Desmond Drive SE, Lacey, WA 98503 (map to location)
Mail — PO Box 47775, Olympia, WA 98504-7775
Phone — 360-407-6300
Central Regional Office
Counties served:
Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, and Yakima
Location — 1250 West Alder Street, Union Gap, WA 98903-0009 (map to location)
Phone — 509-575-2490
Fax — 509-575-2809
Office hours — 8 AM - 5 PM
Eastern Regional Office
Counties served:
Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, and Whitman
Location — 4601 N Monroe, Spokane, WA 99205-1295 (map to location)
Phone — 509-329-3400
Fax — 509-329-3596
Office hours — 8 AM - 5 PM
Field Offices
Manchester Laboratory
Location — 7411 Beach Drive East, Port Orchard, WA 98366-8204
Phone — 360-871-8800
Laboratory Accreditation Unit
Mail — P.O. Box 488, Manchester, WA 98353-0488
Phone — 360-871-8840
Bellingham
Location — 913 Squalicum Way #101, Bellingham WA 98225
Phone — 360-255-4400
Fax — 360-715-5225
Padilla Bay National Estuarine Research Reserve
Location — 1043 Bay View-Edison Road, Mt. Vernon WA 98273
Phone — 360-428-1558
Fax — 360-428-1491
Richland — Nuclear Waste Program
Location — 3100 Port of Benton Blvd., Richland, WA 99354
Phone — 509-372-7950
Fax — 509-372-7971
Office hours — 8 a.m. - 5 p.m.
Office of the Columbia River
Phone — 509-574-3989
Vancouver
Location — 12121 NE 99th St., Ste. 2100, Vancouver, WA 98682-2346
Phone — 360-690-7171