Wash. Rev. Code § 9A.32.070 : — WASHINGTON CRIMINAL CODEHOMICIDE — Manslaughter in the second degree TEXT PDF (1) A person is guilty of manslaughter in the second degree when, with criminal negligence, he or she causes the death of another person. (2) Manslaughter in the second degree is a class B felony. RCW 9A.32.070 Amended by 2011 c 336,§ 358, eff. 7/22/2011. 1997 c 365 § 6; 1975 1st ex.s. c 260 § 9A.32.070.