Wash. Admin. Code § 388-02-0580
(2) A review judge may extend the deadline if a party:
(3) A review judge may accept a review request after the twenty-one calendar day deadline only if:
[Statutory Authority: RCW 34.05.020. WSR 12-13-083, § 388-02-0580, filed 6/19/12, effective 7/20/12. Statutory Authority: RCW 34.05.020, 34.05.220. WSR 11-04-074, § 388-02-0580, filed 1/31/11, effective 3/3/11. Statutory Authority: RCW 34.05.020, 34.05.220, 42 C.F.R. 431.10 (e)(3), 45 C.F.R. 205.100 (b)(3), chapter 34.05 RCW, Parts IV and V. WSR 08-21-144, § 388-02-0580, filed 10/21/08, effective 11/21/08. Statutory Authority: RCW 34.05.020, chapter 34.05 RCW, Parts IV and V, 2002 c 371 § 211. WSR 02-21-061, § 388-02-0580, filed 10/15/02, effective 11/15/02. Statutory Authority: RCW 34.05.020. WSR 00-18-059, § 388-02-0580, filed 9/1/00, effective 10/2/00.]