(1) All matters relating to the implementation and enforcement of this chapter by the department of ecology shall be carried out in accordance with chapter
34.05 RCW, the Administrative Procedure Act, except where the provisions of this chapter expressly conflict with chapter
34.05 RCW. Proceedings held pursuant to RCW
90.14.130 are adjudicative proceedings within the meaning of chapter
34.05 RCW. Final decisions of the department of ecology in these proceedings are subject to review in accordance with chapter
43.21B RCW.
(2) RCW
90.14.130 provides nonexclusive procedures for determining a relinquishment of water rights under RCW
90.14.160,
90.14.170, and
90.14.180. RCW
90.14.160,
90.14.170, and
90.14.180 may be applied in, among other proceedings, general adjudication proceedings initiated under RCW
90.03.110 or
90.44.220: PROVIDED, That nothing herein shall apply to litigation involving determinations of the department of ecology under RCW
90.03.290 relating to the impairment of existing rights.