| WAC | |
| 197-11-600 | When to use existing environmental documents. |
| 197-11-610 | Use of NEPA documents. |
| 197-11-620 | Supplemental environmental impact statement—Procedures. |
| 197-11-625 | Addenda—Procedures. |
| 197-11-630 | Adoption—Procedures. |
| 197-11-635 | Incorporation by reference—Procedures. |
| 197-11-640 | Combining documents. |