WAC 16-202-1011
What are the general antipollution safety
device requirements for a chemigation system? All systems must
have antipollution safety devices that include a backflow
prevention system, metering device, injection device, and system
interlock as listed on the pesticide label and contained in this
rule. To prevent backflow into the irrigation water source or
chemical supply system.
[Statutory Authority: Chapters 15.54, 15.58, 17.21, and 34.05 RCW. 01-23-018, § 16-202-1011, filed 11/9/01, effective
11/9/01.]