The use or application of use restricted herbicides is prohibited in Area 1 when the mean sustained wind velocity is over twelve miles on and after April 15th through October 31st: Provided, That applications of allowable 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.