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Fumigant Resource Center
Fumigant Regulatory Issues

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Volatile Organic Compound Emissions from Fumigants
Chloropicrin
1,3-Dichloropropene (Telone)
Iodomethane (Methyl Iodide)
Metam Sodium and Methyl Isothiocyanate (MITC)
Methyl Bromide
Sulfuryl Fluoride

Volatile Organic Compound Emissions from Fumigants

Regulations to reduce emissions of volatile organic compounds (VOCs) from fumigant pesticides went into effect January 25, 2008. Products affected are those containing methyl bromide, 1-3 dichloropropene, chloropicrin, metam sodium, potassium N-methyldithiocarbamate (also called metam-potassium), dazomet, and sodium tetrathiocarbonate.

• Regulations to reduce fumigant emissions

Chloropicrin

• Notice of decision to begin reevaluation of pesticide products containing chloropicrin (December 1, 2001) (PDF, 26 kb)
• Enforcement letters: Information and guidance to County Agricultural Commissioners (2001-current)

1,3-Dichloropropene (Telone)

• California Management Plan: 1,3-Dichloropropene (January 30, 2002) (PDF, 243 kb)
• Dow AgroSciences proposal for refinement of 1,3-dichloropropene use in California townships (January 24, 2002) (PDF, 104 kb)
• DPR response to Dow AgroSciences proposal (January 30, 2002) (PDF, 110 kb)
• Enforcement letters: Information and guidance to County Agricultural Commissioners (2001-current)

Iodomethane (Methyl Iodide)

• Notice Regarding Initiation of Risk Assessment Process for the New Active Ingredient Iodomethane (August 2004) (PDF, 119 kb)

Metam Sodium and Methyl Isothiocyanate (MITC)

• Mitigation proposal - Details on proposed controls to reduce off-site and bystander short-term exposure to MITC (PDF, 847 kb) (January 5, 2007)
• Risk Management Directive for MITC (December 2, 2002) (PDF, 32 kb)
• DPR Regulation #02-008: Designation of MITC as a toxic air contaminant
  (approved 5/22/03; effective 6/21/03) (PDF, 8 kb)
• DPR Regulation #01-004: Dazomet and metam-potassium (approved 7/24/01; effective 7/24/01) (PDF, 6 kb)
• Enforcement letters: Information and guidance to County Agricultural Commissioners (2000-current)

Methyl Bromide

• Controlling seasonal exposure (last updated: December 2004)
• Approved tarpaulins (PDF, 96 kb) (last updated: August 12, 2008)
• DPR Regulation #03-004 (PDF, 46 kb): Buffer Zones (PDF, 117 kb) Methyl bromide field fumigation (approved and effective 11/3/04)
• Guidance document for County Agricultural Commissioners
• DPR Regulation #01-009: Methyl bromide field fumigation (approved 4/8/02; effective 4/8/02) (PDF, 20 kb)
• DPR Regulation #00-001: Methyl bromide field fumigation (approved 12/15/00; effective 1/14/01) (PDF, 35 kb)
• DPR Regulation #98-014: Methyl bromide and structural fumigation (approved 8/15/00; effective 9/14/00) (PDF, 18 kb)
• Enforcement letters: Information and guidance to County Agricultural Commissioners (2000-current)
• Review of Restrictions on the Use of Methyl Bromide (Report to the Legislature, November 1996)

Sulfuryl Fluoride

• Enforcement letters: Information and guidance to County Agricultural Commissioners (2005)
• DPR Regulation #05-005: Designation of sulfuryl fluoride as a restricted material (approved 12/14/05; effective 12/15/05) (PDF, 12 kb)
  
• Notice of Decision to Initiate Reevaluation of Certain Sulfuryl Fluoride Products Intended for Structural Fumigation (PDF, 48 kb)

For content questions contact:
Randy Segawa
Phone: (916) 324-4137
E-mail: rsegawa@cdpr.ca.gov