Information on Methyl Bromide
Find information on the registration status, continuous evaluation and mitigation measures in California to regulate this active ingredient. An active ingredient is the chemical that makes a pesticide work on a target pest.
Active Ingredient: Methyl Bromide
Type of Pesticide: Fungicide, Herbicide, Insecticide, Molluscicide, Nematicide, Vertebrate Control
California Registration: Yes
EPA Registration: Yes
Fumigant: Yes
California Restricted Material: Yes
Toxic Air Contaminant (TAC): Yes
Volatile Organic Compound (VOC): Yes
Potential Groundwater Contaminant: No
Reevaluation Status: Concluded
Chemical Class: Organobromine
DPR Chemical Code: 385
Recent Reports and Announcements
- Revised Risk Estimates for Kern Country Methyl Bromide Air Monitoring In 2001
- Options to Methyl Bromide for the Control of Soil-Borne Diseases and Pests in California with Reference to the Netherlands
- Response to Comments from Methyl Bromide Subchronic Regulatory Level Workshop on February 26, 2003
- Setting Methyl Bromide Target Exposure Levels
- Methodology to Determine Methyl Bromide Use Cap
- Evaluation of Charcoal Tube and SUMMA Canister Recoveries for Methyl Bromide Air Sampling
- Completion of Mitigation for Methyl Bromide Field Soil Fumigations
- Approved Tarpaulins for Methyl Bromide Field Fumigations
- Updating 1,3-Dichloropropene and Methyl Bromide Detections from 2011 to 2023
Risk Evaluation and Mitigation Documents
- February 2020 - Methyl Bromide - Approved Tarpaulins - English pdf
- July 2017 - Completion of Mitigation for Methyl Bromide Field Soil Fumigation Exposures - English pdf
- October 2016 - ENF 2016-025 - Methyl Bromide Commodity Fumigation Label Revision
- March 2016 - ENF 2016-05 - Updates to Volume 3, Restricted Materials and Permitting, Pesticides Use Enforcement Programs Standards Compendium, Appendix M: Methyl Bromide Field Fumigation Recommended Permit Conditions
- April 2015 - Results From Consultation with Tulare CAC Concerning Variances from the Methyl Bromide Commodity Fumigation Recommendations at a Nut Processing Plant - English pdf
- March 2014 - Results From Consultation with Stanislaus CAC Concerning Proposed Conversion of a Warehouse into a Fumigation Chamber - English pdf
- April 2011 - Methyl Bromide: Changes to Work Hour Limitations - English pdf
- April 2011 - Soil Fumigant Labeling - Stop Work Trigger Demonstration Table - English pdf
- January 2010 - Methyl Bromide Regulations Risk Management Decision - English pdf
- October 2005 - Estimation of Methyl Bromide Flux for Siemer Studies TC199.1 and F1.1 and Use of Standard Weather Conditions - English pdf
- December 2004 - Guidance Manual for Methyl Bromide (in Combination with Chloropicrin) Field Soil Fumigation - English pdf
- September 2004 - ENF 2004-020 - Methyl Bromide Field Fumigation Training Schedule - English pdf
- March 2004 - Revised Risk Estimates For Kern Country Methyl Bromide Air Monitoring in 2001 - English pdf
- February 2004 - Evaluation of Ambient Air Monitoring Conducted by the Alliance of the Methyl Bromide Industry in Ventura and Monterey/Santa Cruz Counties in 2002 - English pdf
- February 2004 - Review of Comparison of Methyl Bromide Gas Concentrations in the Tarp Soil Inter-Space: Deep Broadcast Tarped vs. Shallow Broadcast Tarped Fumigation - English pdf
- January 2004 - Effect of Air Resources Board Corrections Received in January 2004 on Calculation of Methyl Bromide Township Cap - English pdf
- October 2003 - ENF 2003-037 - Methyl Bromide Fumigation of Potting Soil Piles
- July 2003 - Evaluation of Ambient Air Monitoring and Township-Month Use Pound Distribution of Methyl Bromide for Subchronic Exposure Assessment - English pdf
- July 2003 - Calculation of a Tolerance Interval for a Township Limit on Methyl Bromide Use to Control Subchronic Exposure - English pdf
- June 2003 - Risk of Methyl Bromide Exposure in Ventura and Monterey/Santa Cruz Counties Based on Alliance of the Methyl Bromide Industry Monitoring in 2002 and Update of Risks for 8-week Exposure from 2001 and 2000 Data - English pdf
- May 2003 - Mitigation Measures for Seasonal Exposures of Agricultural Workers to Methyl Bromide during Soil Fumigations - English pdf
- January 2003 - ENF 2003-004 - Emergency Exemption to Use Methyl Bromide to Treat Imported Commodities at Ports of Entry
- June 2002 - Summary and Analysis of 2001 Ambient Air Monitoring Data for Methyl Bromide - English pdf
- June 2002 - Methyl Bromide Report Figures - English pdf
- June 2002 - Appendix A: Results of Individual Methyl Bromide Air Samples - English pdf
- June 2002 - Appendix B: Methyl Bromide Exposure and Risk Evaluations - English pdf
- June 2002 - Appendix C: Analysis of Methyl Bromide Ambient Air Concentrations and Use Data - English pdf
- February 2002 - Methyl Bromide Risk Characterization Document Volume 1: Inhalation Exposure - English pdf
- February 2002 - Methyl Bromide Risk Characterization Document Volume 2: Dietary Exposure - English pdf
- February 2002 - Methyl Bromide Risk Characterization Document Volume 3: Aggregate Exposure - English pdf
- December 2001 - ENF 2001-056 - Methyl Bromide Field Fumigation Permit Conditions Information Package
- November 2001 - ENF 2001-048 - Update of Suggested Guidelines for Methyl Bromide Commodity Fumigation
- July 2001 - ENF 2001-033 - Emergency Regulations, Methyl Bromide Field Fumigation-Inner Buffer Zone
- June 2001 - Methyl Bromide Risk Management Plan for Seasonal Community Exposures - English pdf
- June 2001 - Appendix A Summary of Ambient Air Monitoring for Methyl Bromide - English pdf
- June 2001 - Appendix B Evaluation of Ambient Air Concentration of Methyl Bromide In Monterey, Santa Cruz, and Kern County - English pdf
- June 2001 - Appendix D: Air Resources Board Monitoring Protocol for 2001 - English pdf
- April 2001 - ENF 2001-013 - Questions Regarding Implementation of the Changes in the Methyl Bromide Field Fumigation Regulations
- December 2000 - ENF 2000-048 - Methyl Bromide Field Fumigation Training Schedule
- November 2000 - ENF 2000-045 - Dry Run for Methyl Bromide Field Fumigation Training
- September 2000 - ENF 2000-033 - Methyl Bromide-Structural Fumigations/Information Mapping®
- March 2000 - ENF 2000-008 - Questions Regarding Implementation of the Methyl Bromide Field Fumigation Regulations
- January 2000 - Summary of Off-Site Air Monitoring for Methyl Bromide Field Fumigations - English pdf
- January 2000 - Recommendations for Methyl Bromide Buffer Zones for Field Fumigations - English pdf
- 2000 - Peer Review by National Academy of Sciences
- December 1999 - Methyl Bromide Emission Ratio Groupings - English pdf
Historic Documents
- August 2017 – Methyl Bromide, 1,3-Dichloropropene, and Chloropicrin Air Monitoring Results for 2010-2016
- November 2016 – Methyl Bromide, 1,3-Dichloropropene, and Chloropicrin Air Monitoring Results for 2010-2015
- May 2015 – Methyl Bromide, 1,3-Dichloropropene, and Chloropicrin Air Monitoring Results for 2010-2014
- September 2014 – Methyl Bromide and 1,3-Dichloropropene Air Monitoring Results
- September 2014 – Methyl Bromide Air Monitoring Results for 2013
- July 2013 – Methyl Bromide Air Monitoring Results for 2012
- July 2013 – Treehole Fumigation Information Available from Industrial Hygiene Services
- July 2013 – Results From Consultation with Stanislaus CAC Concerning Proposed Construction of Fumigation Chamber
- May 2013 – Survey of Methyl Bromide and Chloropicrin Air Concentrations during Shanked Field Applications
- March 2013 – Soil Fumigation Buffer Zone Determination
- March 2013 – Recommended Permit Conditions
- July 2012 – Methyl Bromide Air Monitoring Results for 2011
- June 2012 – Results from Consultation with San Luis Obispo CAC Concerning Recently Constructed Fumigation Chamber
- May 2012 – Results From Consultation with Madera CAC Concerning Proposed Construction of Fumigation Chamber
- March 2012 – Methyl Bromide Off-Gassing from Chilean Fruit Treatment during Transport and Cold Storage: Investigation, Mitigation and Regulatory Plan
- March 2012 – Pesticide Registration and Evaluation Committee Meeting Agenda
- March 2012 – Pesticide Registration and Evaluation Committee Meeting Minutes
- September 2011 – On-Site Review of an Engineering Control in a Fumigation Facility Designe to Reduce Buffer Zone
- September 2010 – Summary of Medical and Industrial Hygiene Information, Methyl Bromide Exposure Associated with Cold Storage Facility near the Port of Long Beach
- August 2010 – Recommendations from a Second Workplace Re-Evaluation of Price/Transfer Facility Proposal for a Real-Time Air Monitoring System and a Secondary Wall Enclosed Fumigation Site
- January 2010 – Results from Area Monitoring for Airborne Methyl Bromide during Tarpaulin Cutting and Removal from Sites Using Different Tarpaulin Film Formulations and Application Methods
- November 2009 – Observations and Recommendations from an Evaluation of a Proposed Negative Pressure Fumigation Facility at Three Rivers Trucking, in the Long Beach Area, Los Angeles County on September 30, 2009
- November 2009 – Observations and Recommendations from an Evaluation of a Proposed Negative Pressure Fumigation Facility in the Long Beach Area, Los Angeles County on September 30, 2009
- November 2009 – Protocol for Collection of Samples during Investigation of Fatalities Suspected to Involve Pesticides
- September 2009 – Regulatory Target Levels for Occupational Subchronic Exposure to Methyl Bromide
- August 2009 – Observations and Recommendations From a Workplace Evaluation of two Fumigation Facilities in the Long Beach Area, Los Angeles County on July 7, 2009
- April 2008 – Summary of Ambient Air Monitoring for Methyl Bromide and 1,3-Dichloropropene in Ventura County in 2005 and 2006
- April 2008 – Follow Up Concerning the PureAire Methyl Bromide Monitor
- September 2007 – Report on Ambient Air Monitoring for Methyl Bromide and 1,3-Dichloropropene in Ventura County during June, July, and August 2006 (Appendix A-E)
- December 2006 – Results from Air Monitoring at a Strawberry Fumigation Facility in Ventura County
- November 2006 – Report on Ambient Air Monitoring for Methyl Bromide and 1,3-Dichloropropene in Ventura County during August and September 2005 (Figures, Laboratory Report, Photos)
- August 2006 – Results from Air Monitoring of Wellpict Fumigation Facility in Ventura County
- March 2004 – Revised Exposures to Methyl Bromide in Kern County Based on Corrected Data for Summer 2001 Monitoring by ARB
- November 2003 – Pesticide Registration and Evaluation Committee Meeting Agenda
- September 2003 – Comparison of Methyl Bromide Gas Concentrations in the Tarp Soil Inter-space: Deep Broadcast Tarped vs. Shallow Broadcast Tarped Fumigation
- September 2003 – About Methyl Bromide
- September 2003 – Pest Management Advisory Committee Meeting Agenda
- September 2003 – Pest Management Advisory Committee Meeting Summary
- June 2003 – Length of Seasonal Exposure of Methyl Bromide Soil Fumigators
- June 2003 – Statistical Analyses to Determine a Use Cap for Limiting Seasonal Ambient Exposure to Methyl Bromide
- June 2003 – Exposures to Methyl Bromide in Monterey/Santa Cruz and Ventura Counties Based on the 2002 Monitoring by the Alliance of the Methyl Bromide Industry
- April 2003 – Alliance of the Methyl Bromide Industry Methyl Bromide Air Monitoring: Ventura, Santa Cruz, and Monterey Counties July-October 2002 (Corrections)
- February 2003 – Addendum to Volume 1
- February 2003 – Workshop on Risk Management Considerations for Methyl Bromide Subchronic Toxicity (Background Information, Risk Characterization of Subchronic Inhalation Exposure to Methyl Bromide)
- June 2002 – Exposures to Methyl Bromide in Kern County Based on Summer 2001 Monitoring by ARB
- June 2002 – Ambient Air Monitoring for Methyl Bromide and 1,3-Dichloropropene in Kern County – Summer 2001 (Appendices Corrections)
- April 2002 – Revised Exposures to Methyl Bromide Based on the Final Report on the 2001 Monitoring in Oxnard/Camarillo and Santa Maria by the Alliance of the Methyl Bromide Industry
- April 2002 – Methyl Bromide Ambient Air Monitoring in Oxnard/Camarillo and Santa Maria August – October 2001
- March 2002 – Final Report for the 2001 Methyl Bromide and 1,3-Dichloropropene Air Monitoring in Monterey and Santa Cruz Counties (Appendices)
- March 2002 – Exposures to Methyl Bromide in Monterey and Santa Cruz Counties Based on the Draft Report on Fall 2001 Monitoring by ARB
- February 2002 – Exposure Assessment Document
- February 2002 – Exposures to Methyl Bromide Based on 2001 Monitoring in Oxnard/Camarillo and Santa Maria by the Alliance of the Methyl Bromide Industry
- January 2002 – Weather Analysis for Monterey, Santa Cruz, and Kern Counties during the Air Resources Board Ambient Air Monitoring Period for Methyl Bromide in Year 2000
- December 2001 – Comparison of Hand-Held Photoionization Detectors to Charcoal Tube & GC-ECD, Dräger Colorimetric Tube, and a Single-Gas Portable Instrument for Detection of Methyl Bromide Residue
- June 2001 – Decision to Begin Reevaluation of Certain Methyl Bromide Pesticide Products
- June 2001 – Appendix C: Empirical Relationship between Use and Air Concentration
- June 2001 – Figures Showing Methyl Bromide High-Use Areas
- May 2001 – Methyl Bromide Subchronic Exposure – Analysis of Data and Risk Management Options (Appendices)
- April 2001 – Evaluating the Effectiveness of Methyl Bromide Soil Buffer Zones in Maintaining Acute Exposures Below a Reference Air Concentration
- March 2001 – Summary of Ambient Air Monitoring for Methyl Bromide
- February 2001 – Exposures to Methyl Bromide based on ARB 2000 Monitoring in Monterey, Santa Cruz and Kern Counties
- January 2001 – Ambient Air Monitoring for Methyl Bromide and 1,3-Dichlororpropene in Monterey/Santa Cruz Counties – Fall 2000
- December 2000 – Final Report for the 2000 Methyl Bromide and 1,3-Dichloropropene Air Monitoring in Kern County
- May 2000 – Revised Work Hours for Methyl Bromide Soil Regulations
- September 2000 – Alternatives to Methyl Bromide for the Control of Soil-Borne Diseases and Pests in California
- January 2000 – Recommended Worker Safety Mitigation Measures For Methyl Bromide Soil Fumigation Regulations
- September 1999 – Monitoring Results from a Comparison Test of Bedded Tarped Application Equipment
- September 1999 – Responses to Comments from OEHHA
- August 1999 – Status of Methyl Bromide Permit Conditions
- July 1999 – Potential Dermal Exposure and Correction of Exposure Estimates
- June 1999 – Evaluation of Charcoal Tube and SUMMA Canister Recoveries for Methyl Bromide Air Sampling (Executive Summary)
- May 1999 – Methyl Bromide Monitoring in Santa Cruz County, First Crest Ranch Application
- November 1998 – Monitoring Results from a Bedded Tarped, High Barrier Film, Shallow Injection Methyl Bromide Application in San Luis Obispo County
- October 1998 – Monitoring Results from a Tarped, High Barrier Film, Shallow Injection Methyl Bromide Application in San Luis Obispo County (Addendum)
- September 1998 – Monitoring Results from Virtually Impermeable Film and High Density Polyethylene (High Barrier) Tarped, Shallow Injection Methyl Bromide Application in Orange County
- September 1998 – Monitoring Results from a Tarped, Virtually Impermeable Film, Shallow Injection Methyl Bromide Application in Orange County
- August 1998 – Response to DPR Request for Additional Information Regarding Frequency and Duration of Methyl Bromide Fumigations
- July 1998 – Results from Seal Beach Application Crew Monitoring for Methyl Bromide Exposure on May 2, 1998
- July 1998 – Results from Irvine Tarpaulin Removal Crew Monitoring for Methyl Bromide Exposure during June 10th and 13th
- June 1998 – Methyl Bromide Fumigation of Various Commodities
- May 1998 – Monitoring Results From the Tarp Removal of a Very High Barrier Tarp Application in Santa Cruz County
- May 1998 – Monitoring Results from a Nontarped Shallow Broadcast Application in Merced County - Method 4/5
- April 1998 – Methyl Bromide Monitoring Results from a Raised Tarp - Nursery Application in San Diego County
- March 1998 – Monitoring Results from a Deep Untarped Application in Madera County - Method 2
- March 1998 – Monitoring Results from a Shallow Tarped Broadcast Application in Monterey County - Method 4/5
- January 1998 – Methyl Bromide Monitoring Results from a Bedded Tarped Application in Orange County - Method 9.1
- January 1998 – Monitoring Results from a Raised Tarp - Nursery Application in San Luis Obispo County
- January 1998 – Monitoring Results from a Bedded Tarped Applications in Riverside County - Method 10
- December 1997 – Methyl Bromide Monitoring Results from a Raised Tarp - Nursery Application in Santa Barbara County
- October 1997 – Methyl Bromide Monitoring in Santa Cruz County
- September 1997 – Description of Computer Modeling Procedures for Methyl Bromide
- August 1997 – Methyl Bromide Monitoring in Ventura County, First Lamplighter Application (Second 24 Hour)
- August 1997 – Methyl Bromide Monitoring in Ventura County, First Lamplighter Application (First 24 Hour)
- August 1997 – Methyl Bromide Sensitive Site Monitoring, Monterey County
- July 1997 – Monitoring Methyl Bromide Field Fumigations during Winter Months
- March 1997 – Hot Gas Injection Fumigation Study Results
- February 1997 – Methyl Bromide Monitoring: Chamber Fumigation, Winters, California
- June 1996 – Methyl Bromide Monitoring Effort to Support a Proposed Three-Hour Aeration Time for Fumigated Cherries
- March 1996 – Methyl Bromide Concentrations in Air near Fumigated Single-Family Houses
- March 1996 – Methyl Bromide Concentrations in Air Downwind during Aeration of Fumigated Single-Family Houses
- November 1995 – Compliance Monitoring at Diamond Walnut
- September 1995 – Alternatives to Methyl Bromide: Research Needs for California
- June 1995 – California Structural Fumigation Pest Control, Industry Standard Tarpaulin Removal Aeration Plan
- April 1995 – Methyl Bromide Monitoring: Building Fumigation, Yolo County
- February 1995 – Prediction of Methyl Bromide Flux from Area Sources Using the ISCST Model
- December 1994 – Methyl Bromide Monitoring at the Anheuser-Busch Brewery in Fairfield
- December 1994 – Methyl Bromide Monitoring: Building Fumigation, Madera County
- August 1994 – Methyl Bromide Monitoring: Building Fumigation, Stanislaus County
- July 1994 – Options to Methyl Bromide for the Control of Soil-Borne Diseases and Pests in California with Reference to the Netherlands
- June 1994 – Methyl Bromide Monitoring: Building Fumigation, Sutter County
- May 1993 – Results of Off-Site Air Monitoring during a Methyl Bromide Warehouse Fumigation
- September 1992 – Results of Off-Site Air Monitoring Following Methyl Bromide Chamber Fumigations
- June 1992 – Guidance for Protocol Development for Methyl Bromide Monitoring
- May 1992 – Data from Joint Methyl Bromide Study in Los Angeles with SCC Products
- September 1989 – Evaluation of Clearing Procedures Following Methyl Bromide and Sulfuryl Fluoride (Vikane) Structural Pest Control Fumigation
- September 1987 – ARB Monitoring of Methyl Bromide, 1986
- August 1987 – Evaluation of Chloropicrin as a Warning Agent and Employee Exposure of Methyl Bromide and Chloropicrin during Structural Fumigation
- August 1986 – Report of a Trip to Europe of Participation in an International Workshop on "Biological Monitoring of Workers Manufacturing, Formulating and Applying Pesticides" and Observation of Use of Methyl Bromide in Soil
- April 1986 – Studies of Methyl Bromide and Chloropicrin Used as Structural Fumigants in CA 1984
- January 1985 – The Use of Serum Bromide Levels as an Indicator of Methyl Bromide Exposure
- August 1984 – Employee Exposure to Methyl Bromide Used for Ground Squirrel Control
- July 1984 – Additional Monitoring of the Concentrations of Methyl Bromide and Chloropicrin in the Air Downwind from Fields during and After Preplant Soil Fumigations (Shallow Injection)
- June 1984 – Additional Monitoring of the Inhalation Exposure of Workers to Methyl Bromide and Chloropicrin during Preplant Soil Fumigations (Shallow Injection) in 1983
- June 1984 – Inhalation Exposure of Commodity Handlers to Methyl Bromide in Yolo County, California, October 1983
- February 1984 – A Study of the Inhalation Exposure of Workers to Methyl Bromide and Chloropicrin during Preplant Soil Fumigations (Shallow Injection) in 1982 - A Preliminary Report
- April 1983 – Inhalation Exposure of Tarpaulin Fumigation Workers to Methyl Bromide in Kern County, California, November 1982
- April 1983 – A Study of the Levels of Methyl Bromide and Chloropicrin in the Air Downwind from a Field during and After a Preplant Soil Fumigation (Shallow Injection) - A Preliminary Report
- March 1983 – A Study of Inhalation Exposure of Tarpaulin Fumigation Workers to Methyl Bromide in Merced County of California, February 1983
- February 1983 – Monitoring Environmental Levels of Methyl Bromide during Commodity Fumigations
- September 1982 – Occupational Illnesses and Injuries Due to Excess Exposure to Pesticides Containing Methyl Bromide Reported by Physicians in California in 1981
- May 1982 – A Study of the Inhalation Exposure of Workers to Methyl Bromide during Preplant Soil Fumigations (Shallow Injections) in 1980 and 1981
- November 1981 – Pesticide-Related Occupational Illnesses and Injuries to Firemen in California as Reported by Physicians in 1980
- August 1981 – Occupational Illnesses and Injuries Due to Excess Exposure to Pesticides Containing Methyl Bromide Reported by Physicians in California in 1980
- July 1981 – Monitoring Methyl Bromide Levels Around an Almond Warehouse during Fumigation in Sacramento, California, October 1980
- October 1980 – Human Occupational Illnesses Due to Exposure to Pesticides Containing Methyl Bromide Reported by Physicians in California in 1979
- November 1979 – Human Occupational Illnesses Due to Exposure to Pesticides Containing Methyl Bromide Reported by Physicians in California in 1978
- December 1977 – Medical Supervision for Employees Exposed to Methyl Bromide
- June 1977 – Human Illnesses in Employed Persons Attributed to Exposure to Pesticides Containing Methyl Bromide with Emphasis on Cases Reported by Physicians in California in 1976
- July 1976 – Human Illnesses in Employed Persons Attributed to Exposure to Pesticides Containing Methyl Bromide with Emphasis on Cases Reported by Physicians in CA in 1975
- October 1973 – Exposure of 24 Firemen to Methyl Bromide on October 5, 1973 at Belmont, California