Wash. Rev. Code » Title 43 · Chapter 43.21C
Revised Code of Washington

Wash. Rev. Code § 43.21C.120 (2025)

Rules, ordinances, resolutions and regulations—Adoption—Effective dates

✓ laws through the 2025 session: 2026 session laws are not yet included
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(1) All agencies of government of this state are directed, consistent with rules and guidelines adopted under RCW 43.21C.110, including any revisions, to adopt rules pertaining to the integration of the policies and procedures of this chapter (the state environmental policy act of 1971), into the various programs under their jurisdiction for implementation. Designation of polices [policies] under RCW 43.21C.060 and adoption of rules required under this section shall take place not later than one hundred eighty days after the effective date of rules and guidelines adopted pursuant to RCW 43.21C.110, or after the establishment of an agency, whichever shall occur later.
(2) Rules adopted by state agencies under subsection (1) of this section shall be adopted in accordance with the provisions of chapter 34.05 RCW and shall be subject to the review procedures of RCW * 34.05.538 and 34.05.240.
(3) All public and municipal corporations, political subdivisions, and counties of this state are directed, consistent with rules and guidelines adopted under RCW 43.21C.110, including any revisions, to adopt rules, ordinances, or resolutions pertaining to the integration of the policies and procedures of this chapter (the state environmental policy act of 1971), into the various programs under their jurisdiction for implementation. Designation of policies under RCW 43.21C.060 and adoption of the rules required under this section shall take place not later than one hundred eighty days after the effective date of rules and guidelines adopted pursuant to RCW 43.21C.110, or after the establishment of the governmental entity, whichever shall occur later.
(4) Ordinances or regulations adopted prior to the effective date of rules and guidelines adopted pursuant to RCW 43.21C.110 shall continue to be effective until the adoptions of any new or revised ordinances or regulations which may be required: PROVIDED, That revisions required by this section as a result of rule changes under RCW 43.21C.110 are made within the time limits specified by this section.
[ 1983 c 117 s 8; 1974 ex.s. c 179 s 8.]

Notes:

*Reviser's note: RCW 34.05.538 was repealed by 1989 c 175 s 185, effective July 1, 1989.
Purpose—1974 ex.s. c 179: See note following RCW 43.21C.080.
Notes of Decisions
Cited in 9 cases (2 in the last 5 years), 1987–2026 · leading case: Levine v. Jefferson Cnty., 807 P.2d 363 (Wash. 1991).
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Levine v. Jefferson Cnty., 807 P.2d 363 (Wash. 1991). · cites it 2× “Such designation shall occur at the time specified by RCW 43.21C.120. Such action may be conditioned only to mitigate specific adverse environmental impacts which are identified in the environmental documents prepared under this chapter.”
Brinnon Grp. v. Jefferson Cnty., 159 Wash. App. 446 (Wash. Ct. App. 2011). “Such designation shall occur at the time specified by RCW 43.21C.120. Such action may be conditioned only to mitigate specific adverse environmental impacts which are identified in the environmental documents prepared under this chapter.”
Prisk v. City of Poulsbo, 732 P.2d 1013 (Wash. Ct. App. 1987). “Such designation shall occur at the time specified by RCW 43.21C.120. Such action may be conditioned only to mitigate specific adverse environmental impacts which are identified in the environmental documents prepared under this chapter.”
Victoria Tower P'ship v. City of Seattle, 745 P.2d 1328 (Wash. Ct. App. 1987). “RCW 43.21C.120. It also requires that environmental impact statements be prepared for "major actions having a probable significant, adverse environmental impact.”
BRINNON Grp. v. Jefferson Cnty., 245 P.3d 789 (Wash. Ct. App. 2011). “These conditions shall be stated in writing by the decisionmaker.”
Brinnon Grp. v. Jefferson Cnty., 245 P.3d 789 (Wash. Ct. App. 2011). “These conditions shall be stated in writing by the decisionmaker.”
Donwood, Inc. v. Spokane Cnty., 957 P.2d 775 (Wash. Ct. App. 1998). “RCW 43.21C.120(3), .060. Counties therefore have authority under SEPA to condition or deny a land use action based on adverse environmental impacts even where the proposal complies with local zoning and building codes.”
Vancouver Audubon Soc'y, V. Dept. Of Nat. Resources, No. 86997-3 (Wash. Ct. App. Feb. 9, 2026). “RCW 43.21C.120; see WAC 332-41-030. DNR’s obligation to provide the Board with a list of proposed critical habitats for newly endangered species serves as a step toward identifying forest practices that may have a substantial impact on the species and to timely consider whether…”
Vancouver Audubon Soc'y, V. Dept. Of Nat. Resources, No. 86997-3 (Wash. Ct. App. May 11, 2026). “RCW 43.21C.120; see WAC 332-41-030. DNR’s obligation to provide the Board with a list of proposed critical habitats for newly endangered species serves as a step toward identifying forest practices that may have a substantial impact on the species and to timely consider whether…”
Wash. Rev. Code § 43.21C.120(3): 1 case
Donwood, Inc. v. Spokane Cnty., 957 P.2d 775 (Wash. Ct. App. 1998). “RCW 43.21C.120(3), .060. Counties therefore have authority under SEPA to condition or deny a land use action based on adverse environmental impacts even where the proposal complies with local zoning and building codes.”
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