1. (a) Discharged more than ten feet above the crop or target. Discharge shall be shut off whenever it is necessary to raise the equipment over obstacles such as trees or poles.
2. (b) Applied when wind velocity is more than ten miles per hour.

3. (c) Applied by aircraft except as follows:

   1. (1) The flow of liquid to aircraft nozzles shall be controlled by a positive shutoff system as follows:

      1. (A) each individual nozzle shall be equipped with a check valve and the flow controlled by a suckback device or a boom pressure release device; or
      2. (B) Each individual nozzle shall be equipped with a positive action valve.
   2. (2) Aircraft nozzles shall not be equipped with any device or mechanism which would cause a sheet, cone, fan, or similar type dispersion of the discharged material except as otherwise provided.
   3. (3) Aircraft boom pressure shall not exceed 40 pounds per square inch.
   4. (4) Aircraft nozzles shall be equipped with orifices directed backward parallel to the horizontal axis of the aircraft in flight.
   5. (5) Fixed wing aircraft and helicopters operating in excess of 60 miles per hour shall be equipped with jet nozzles having an orifice of not less than ¹/₁₆ inch in diameter.

   6. (6) Helicopters operating at 60 miles per hour or less shall be equipped with:

      1. (A) Nozzles having an orifice not less than ¹/₁₆ inch in diameter. A number 46 (or equivalent) or larger whirlplate may be used; or
      2. (B) Fan nozzles with a fan angle number not larger than 80 degrees and a flow rate not less than one gallon per minute at 40 pounds per square inch pressure (or equivalent); or
      3. (C) The Microfoil (R) boom (a coordinated spray system including airfoil-shaped nozzles with each orifice not less than 0.013 inches in diameter) or equivalent type approved by the director. Orifices shall be directed backward parallel to the horizontal axis of the aircraft in flight.

4. (d) Applied by ground equipment except as follows:

   1. (1) Ground equipment other than handguns shall be equipped with:

      1. (A) Nozzles having an orifice not less than ¹/₁₆ inch in diameter or equivalent, and operated at a boom pressure not to exceed 30 pounds per square inch; or
      2. (B) Low pressure fan nozzles with a fan angle number not larger than 80 degrees and fan nozzle orifice not smaller than 0.2 gallon per minute flow rate or equivalent, and operated at a boom pressure not to exceed 15 pounds per square inch.

Unless expressly authorized by permit issued pursuant to section 6412, no liquid Dicamba, 2,4-dichlorophenoxyacetic acid, 2,4-dichlorophenoxybutyric acid, 2,4-dichlorophenoxypropionic acid, 2-methyl-4-chlorophenoxyacetic acid, or Propanil herbicide shall be:

Note: Authority cited: Sections 12781, 12972, 12976, 14001, 14005 and 14102, Food and Agricultural Code. Reference: Sections 11501, 14006, 14033 and 14102, Food and Agricultural Code.

History

1. Editorial renumbering and amendment of former section 2458(a)-(c) to section 6460 filed 8-13-85 (Register 85, No. 33).

2. Amendment filed 2-6-87; effective upon filing pursuant to Government Code section 11346.2(d) (Register 87, No. 7).

3. Amendment of subsection (c) filed 5-23-88 as an emergency, operative 5-23-88 (Register 88, No. 22). A Certificate of Compliance must be transmitted to OAL within 120 days or emergency language will be repealed on 9-20-88.

4. Emergency language filed 5-23-88 repealed by operation of law (Register 89, No. 49).

5. Amendment of subsection (c) filed 12-1-89; operative 12-1-89 pursuant to Government Code section 11346.2(d) (Register 89, No. 49).

6. Editorial correction of printing error in subsection (c)(5) and History 5. (Register 91, No. 33).

7. Change without regulatory effect amending first paragraph and Note filed 4-3-96 pursuant to section 100, title 1, California Code of Regulations (Register 96, No. 14).

8. Change without regulatory effect amending first paragraph, redesignating former subsection (c)(6)(A)(13) as subsection (c)(6)(B) and relettering subsections filed 11-10-2011 pursuant to section 100, title 1, California Code of Regulations (Register 2011, No. 45).