· New state law governing the use of vacuum or suction dredge equipment, otherwise known as suction dredging, is now in effect, as of January 1, 2016. (Stats. 2015, ch. 680, §§ 2-3.) The new law, commonly referred to as Senate Bill or "SB" 637 (Allen), amends Fish and Game Code section 5653 and adds section 13172.5 to the Water Code.