The definitions in this section apply throughout this chapter unless the context clearly requires otherwise.
(1) "Business days" means Monday through Friday exclusive of any state or federal holiday.
(2) "Date of receipt" means:
(a) Five business days after the date of mailing; or
(b) The date of actual receipt, when the actual receipt date can be proven by a preponderance of the evidence. The recipient's sworn affidavit or declaration indicating the date of receipt, which is unchallenged by the agency, shall constitute sufficient evidence of actual receipt. The date of actual receipt, however, may not exceed forty-five days from the date of mailing.
(3) "Department" means the department of ecology.
(4) "Director" means the director of ecology.
(5) "Environmental boards" means the pollution control hearings board created in RCW 43.21B.010 and the shorelines hearings board created in RCW 90.58.170.
(6) "Land use board" means the growth management hearings board created in RCW 36.70A.250.