(1) The provisions for phased review (WAC 197-11-060(5)) and use of existing environmental documents, Part Six, apply to EISs on nonproject proposals.

(2) A nonproject proposal may be approved based on an EIS assessing its broad impacts. When a project is then proposed that is consistent with the approved nonproject action, the EIS on such a project shall focus on the impacts and alternatives including mitigation measures specific to the subsequent project and not analyzed in the nonproject EIS. The scope shall be limited accordingly. Procedures for use of existing documents shall be used as appropriate, see Part Six.

(3) When preparing a project EIS under the preceding subsection, the lead agency shall review the nonproject EIS to ensure that the analysis is valid when applied to the current proposal, knowledge, and technology. If it is not valid, the analysis shall be reanalyzed in the project EIS.