RCW 88.46.160, 90.48.080, 90.56.005, 90.56.050, 90.56.060, 90.56.210, 90.56.240, 90.56.260, 90.56.270, 90.56.280, 90.56.300, 90.56.310, 90.56.320, 90.56.340, and 90.56.570 provide statutory authority for the contingency plan preparation and review requirements and drill standards established by this chapter for railroads.