1. (a) (1) A closed system shall be used for all mixing and transfers conducted by an employee.

   1. (2) Paraquat applications shall not be made within ⅛ mile of any school or any area zoned as residential where people are actually residing or other inhabited residential area designated by the commissioner.
   2. (3) DEF or Folex applications shall not be made within ½ mile of any area zoned as residential where people are actually residing or other inhabited residential area designated by the commissioner or any school in session or due to be in session within 24 hours.
   3. (4) DEF or Folex applications shall not in any case be made within ⅛ mile of any school.

2. (b) (1) Jet nozzles having an orifice of not less than ¹/₁₆ inch in diameter shall be used on aircraft with such orifices directed backward parallel to the horizontal axis of the aircraft in flight. A number 46 (or equivalent) or larger whirlplate may be used.

   1. (2) Aircraft nozzles shall not be equipped with any device or mechanism which would cause a sheet, fan, cone, or similar type dispersion of the discharged material.
   2. (3) Aircraft boom pressure shall not exceed 40 pounds per square inch.

   3. (4) These cotton harvest aids shall be applied by aircraft only in combination with a viscoelastic thickening agent or other drift control agent approved as effective for such purposes by the Director of the Department of Food and Agriculture.

      (5)Except for the requirements of paragraph (4), this subsection does not apply to helicopters equipped with a Microfoil (R) boom operated at air speeds below 60 miles per hour.

3. (c) Air carrier ground equipment shall not be used to apply DEF or Folex.

S,S,S-tributyl phosphorotrithioate (DEF), tributyl phosphorotrithioite (Folex), or paraquat when used as cotton harvest aids, singly or in combination, shall be used only in accordance with the following restrictions:

Note: Authority cited: Sections 11456, 12976, 12981, 14005 and 14102, Food and Agricultural Code. Reference: Sections 11501, 12981, 14006 and 14102, Food and Agricultural Code.

History

1. Editorial renumbering and amendment of former Section 2458.4 to Section 6470 filed 8-13-85 (Register 85, No. 33).

2. Change without regulatory effect amending Note filed 6-20-2001 pursuant to section 100, title 1, California Code of Regulations (Register 2001, No. 25).

3. Change without regulatory effect amending subsection (a)(1) filed 11-10-2011 pursuant to section 100, title 1, California Code of Regulations (Register 2011, No. 45).

4. Amendment of subsection (a)(1) filed 5-29-2020; operative 7-1-2020 (Register 2020, No. 22).