(1) Area 1 and 2.

(a) The use or application of use restricted herbicides shall be prohibited on and after April 16th through October 31st when the mean sustained wind velocity is over ten miles per hour.

(b) The use or application of use restricted herbicides is prohibited on and after November 1st through April 15th of the following year when the mean sustained wind velocity is over twelve miles per hour: Provided, That application of allowable use restricted herbicides is exempt from these wind restrictions when applying fifty gallons or more per acre in conformance with the manufacturer's specified combination of nozzle type/size and pressure in pounds per square inch (psi) at the nozzle that produces a spray droplet size that falls within the very coarse (or larger) range as defined by the ASABE standards.

(2) Area 3 and 4. The use or application of use restricted herbicides is prohibited when the mean sustained wind velocity is over twelve miles per hour: Provided, That ground applications of use restricted herbicides are exempt from these wind restrictions when applying fifty gallons or more per acre in conformance with the manufacturer's specified combination of nozzle type/size and pressure in pounds per square inch (psi) at the nozzle that produces a spray droplet size that falls within the very coarse (or larger) range as defined by the ASABE standards.