Sub-locations
| Name | Sites | Samples |
|---|---|---|
| Pend Oreille County | 20 | 165 |
| Pierce County | 21 | 58 |
| San Juan County | 124 | 315 |
| Skagit County | 17 | 44 |
| Skamania County | 19 | 78 |
| Snohomish County | 9 | 23 |
| Spokane County | 9 | 19 |
| Stevens County | 26 | 103 |
| Thurston County | 3 | 9 |
| Wahkiakum County | 2 | 15 |
| Walla Walla County | 2 | 6 |
| Whatcom County | 61 | 219 |
| Whitman County | 9 | 67 |
| Yakima County | 11 | 24 |
Sites
| Site Identifier | Name | Location | Samples |
|---|---|---|---|
| 45JE15 | Seal Rock | WA | 3 |
| 45JE16 | Indian Island | WA | 5 |
| 45JE6 | Bugge Spit | WA | 55 |