You can apply through children's administration to determine your eligibility for CA/SSP, but eligibility is limited to those meeting the eligibility requirements in WAC 388-25-1010.
Wash. Admin. Code § 110-50-1260
Statutory Authority: RCW 74.04.050, 2002 c 371, RCW 74.04.600 and 74.13.031. WSR 05-11-016, § 388-25-1040, filed 5/9/05, effective 6/9/05.