- (1) A person shall not function as a metering device during a chemigation application.
- (2) A person with knowledge of the operation of both the irrigation and injection systems may function as a metering device during fertigation with a nonpressurized irrigation delivery system: Provided that the person remains on-site to continuously monitor the application and is immediately available to terminate the application in the event of any equipment malfunction.
[Statutory Authority: RCW 17.21.030, 15.58.040(2), and 15.54.800(2). WSR 25-22-066, s 16-202-335, filed 10/31/25, effective 12/1/25.]