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Article 18. Contamination Of Compost of California Food And Agricultural Code >> Division 7. >> Chapter 2. >> Article 18.

(a) "Clopyralid" means 3,6-dichloro-2-pyridinecarboxylic acid.
  (b) "Compost" means the product resulting from the controlled biological decomposition of organic wastes that are source separated from the municipal solid waste stream, or that are separated at a centralized facility.
  (c) "Department" means the Department of Pesticide Regulation.
  (d) "Herbicide" means a pesticide, as defined in Section 12753, that is intended to kill weeds.
  (e) "Lawn and turf use" means a residential or nonresidential use of an herbicide on lawn and turf, including, but not limited to, lawn and turf located at schools, parks, office buildings and golf courses. Lawn and turf use does not include use of an herbicide on lawn and turf located in turf farms, uncultivated open space, agricultural rangeland or cultivated farmland.
  (f) "Persistent residues in compost" means residues of an herbicide in compost at levels and in a form with the potential to be toxic or injurious to plants.
  (g) "Plants" means desirable vegetation, except weeds.
  (h) "Weed" means any plant that grows where not wanted, as defined in Section 12759.
(a) No person, except a pest control dealer licensed pursuant to Chapter 7 (commencing with Section 12101) of Division 6 of the Food and Agricultural Code, may sell a pesticide that contains the active ingredient clopyralid.
  (b) Pesticides containing the active ingredient clopyralid that are labeled for use on lawns and turf, including golf courses, may only be sold to qualified applicators licensed pursuant to Chapter 8 (commencing with Section 12201) of Division 6 of the Food and Agricultural Code or issued a certificate pursuant to Chapter 3 (commencing with Section 14151) of Division 7 of the Food and Agricultural Code.
Not later than April 1, 2003, the department shall, pursuant to Sections 12824 and 12825, do both of the following:
  (a) Determine in writing those lawn and turf uses of the herbicide clopyralid for which there is no reasonable likelihood that the specified use will result in persistent residues in compost.
  (b) Take either of the following actions:
  (1) Impose appropriate restrictions on the lawn and turf uses of the herbicide clopyralid that are not identified in the determination made pursuant to subdivision (a).
  (2) Cancel any lawn and turf use that the department determines is likely to result in persistent residues in compost.