Sub-locations
| Name | Sites | Samples |
|---|---|---|
| Adams County | 1 | 1 |
| Asotin County | 4 | 12 |
| Benton County | 16 | 68 |
| Chelan County | 15 | 69 |
| Clallam County | 25 | 246 |
| Clark County | 15 | 140 |
| Columbia County | 1 | 1 |
| Cowlitz County | 1 | 2 |
| Douglas County | 29 | 128 |
| Ferry County | 11 | 46 |
| Franklin County | 16 | 98 |
| Garfield County | 6 | 11 |
| Grant County | 17 | 78 |
| Grays Harbor County | 3 | 38 |
| Island County | 34 | 91 |
| Jefferson County | 1 | 0 |
| King County | 28 | 239 |
| Kitsap County | 20 | 35 |
| Kittitas County | 22 | 99 |
| Klickitat County | 7 | 22 |
| Lewis County | 19 | 58 |
| Lincoln County | 2 | 7 |
| Mason County | 4 | 10 |
| Okanogan County | 63 | 269 |
| Pacific County | 10 | 36 |
Sites
| Site Identifier | Name | Location | Samples |
|---|---|---|---|
| 45JE15 | Seal Rock | WA | 3 |
| 45JE16 | Indian Island | WA | 5 |
| 45JE6 | Bugge Spit | WA | 55 |