Information on 1,3-Dichloropropene (Telone)
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: 1,3-Dichloropropene (Telone)
Type of Pesticide: Fungicide, Insecticide, Nematicide
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: Yes
Reevaluation Status: Concluded
Chemical Class: Organochlorine
DPR Chemical Code: 573
Recent Reports and Announcements
- DPR’s 1,3-Dichloropropene Tarpaulin List
- Application Options for 1,3-Dichloropropene Pilot Program
- Options to Mitigate Acute Exposures to 1,3‐Dichloropropene
- Department of Pesticide Regulation Proposes Regulations Developed with the Office of Environmental Health Hazard Assessment to Further Restrict the Use of the Pesticide 1,3-D
- State Strengthens Use Restrictions of Pesticide 1,3-D to Protect Public Health
- Correlating Agricultural Use with Ambient Concentration of 1,3-Dichloropropene During the Period of 2011-2014
- Simulation of 1,3-Dichloropropene Emissions for a Broadcast Application with Partial Low Permeability Film Surface Cover
- Calculation of 1,3-D Application Factors Based on HYDRUS Flux Estimates
- Modeling a 1,3-Dichloropropene Application at Parlier, CA on September 19, 2017
- Modeling 1,3-Dichloropropene Applications at Parlier, CA on October 9, 2018
- Modeling a 1,3-Dichloropropene Application at Shafter, CA on January 21, 2018
- Table 2. Determining the Application Factor (AF). See 1,3-Dichloropropene Field Fumigations, Est. January 1, 2024 Document for Descriptions and Requirements of the Field Fumigation Methods.
- Regulations Around the Use of 1,3-Dichloropropene
- Analysis of High Barrier Tarpaulin CIS-1,3-Dichloropropene Mass Transfer Coefficient Data Measured Under High Relative Humidity Conditions
- Monitoring of 1,3-Dichloropropene in Fresno and Merced Counties: Results for 2023
- Oncogenic Potency and Risk to Workers and the General Public from Inhaled 1,3-Dichloropropene
- Monitoring of 1,3-Dichloropropene in Merced and Fresno Counties: Results for 2019
- Updating 1,3-Dichloropropene and Methyl Bromide Detections from 2011 to 2023
- CCST Fumigant Study Phase 1
- DPR and OEHHA Open Public Comment Period on Modified Proposed Regulations to Restrict 1,3-D Use in California
- Draft 1,3-Dichloropropene Report for 2024
- Monitoring of 1,3-Dichloropropene in Fresno and Merced Counties: Results for 2024
Risk Evaluation and Mitigation Documents
- SprayDays Factsheet: About 1,3-Dichloropropene (1,3-D) - English
- SprayDays Factsheet: About 1,3-Dichloropropene (1,3-D) - Spanish
- June 2024 - Update to OEHHA's Health-Based Recommendations to Mitigate Cancer Risk of Occupational Bystander Exposure to 1,3-Dichloropropene
- March 2024 - Risk Management Directive for Occupational Bystander Cancer Risk From 1,3-Dichloropropene (1,3-D) - English pdf
- March 2024 - Comments on the January 2, 2024, Draft Risk Management Directive for Occupational Bystander Cancer Risk From 1,3-Dichloropropene and Responses - English pdf
- December 2023 - DPR 22-005 Text of Final Regulations - English pdf
- December 2023 - OEHHA's Health-Based Recommendations to Mitigate Cancer Risk of Occupational Bystander Exposure to 1,3-Dichloropropene - English pdf
- December 2023 - Attachment to OEHHA Memorandum: "Health-Based Recommendations to Mitigate Cancer Risk of Occupational Bystander Exposure to 1,3-Dichloropropene" - English pdf
- February 2023 - Erratum Table IV.8 - English pdf
- December 2022 - Exposure Estimates, Margins of Exposure, and Cancer Risk Estimates for Tarp Cutters Exposed to 1,3-Dichloropropene - English pdf
- November 2022 - Proposed Rulemaking for Health Risk Mitigation and Volatile Organic Compound Emission Reduction for 1,3-Dichloropropene
- October 2021 - Comments on the September 28, 2021 Draft Risk Management Directive for 1,3-Dichloropropene and Responses - English pdf
- October 2021 - Risk Management Directive and Mitigation Guidance for Acute, Non-Occupational Bystander Exposure from 1,3-Dichloropropene (1,3-D) - English pdf
- July 2017 - Responses to the European Food Safety Authority-Member State Draft Risk Assessment on 1,3-Dichloropropene - English pdf
- June 2017 - Revision of Human Equivalent Concentrations, Margins of Exposure, Air Unit Risk and Cancer Risk Values for Occupational Seasonal, Annual and Lifetime Exposure Scenarios - English pdf
- January 2017 - Recommended Permit Conditions
- January 2017 - Oversight of Use Limits for 1,3-Dichloropropene Enforcement Letter - English pdf
- January 2017 - ENF 2017-01 - Update to Volume 3, Restricted Materials and Permitting, Pesticide Use Enforcement Program Standards Compendium, 1,3-D Recommended Permit Conditions
- November 2016 - Response to comments by Dow AgroSciences on DPR-HHAB’s draft 1,3-Dichloropropene Risk Characterization Document - English pdf
- October 2016 - Updated (No December Applications Allowed) Simulation of Cancer Risks Associated with Different Township Cap Scenarios of Merced County for 1,3-Dichloropropene - English pdf
- October 2016 - Risk Management Directive and Mitigation Guidance for Cancer Risk from 1,3-Dichlorpropene (1,3-D) - English pdf
- October 2016 - Comments on the Draft Risk Management Directive for 1,3-Dichloropropene (1,3-D) and Responses - English pdf
- October 2016 - Changes in the Management of 1,3-D and Frequently Asked Questions - English pdf
- October 2016 - Analysis of Agricultural Use and Average Concentrations of 1,3-Dichloropropene in Nine Communities of California in 2006 - 2015, and Calculation of a Use Limit (Township Cap) - English pdf
- September 2016 - Responses to comments by Dr. Weisueh A. Chiu on DPR-HHAB’s draft 1,3-Dichloropropene Risk Characterization Document - English pdf
- September 2016 - Responses to comments by Dr. Richard A. Fenske on DPR-HHAB’s draft 1,3-Dichloropropene Risk Characterization Document - English pdf
- September 2016 - Responses to comments by Dr. Urmila P. Kodavanti on DPR-HHAB’s draft 1,3-Dichloropropene Risk Characterization Document - English pdf
- September 2016 - Response to comments by US EPA on DPR-HHAB’s draft 1,3-Dichloropropene Risk Characterization Document - English pdf
- September 2016 -1,3-Dichloropropene - OEHHA Comments on DPR's Draft Risk Management Directive (RMD)
- August 2016 - Response to comments by OEHHA on DPR-HHAB’s draft 1,3-dichloropropene risk assessment document - English pdf
- August 2016 - Calculation of Intermediate-Term Residential Exposures Using Measured Air Concentrations from the Ambient Air Monitoring Network - English pdf
- July 2016 - ENF 2016-20 - Update to Volume 3, Restricted Materials and Permitting, Pesticide Use Enforcement Program Standards Compendium, Correction to 1,3-D Recommended Permit Conditions
- December 2015 - 1,3-Dichloropropene Risk Characterization Document: Inhalation Exposure to Workers, Occupational and Residential Bystanders and the General Public - English pdf
- August 2015 - 1,3-Dichloropropene Draft Risk Characterization Document - English pdf
- August 2015 - Variability in Simulated Chloropicrin and 1,3 Dichloropropene Volatilization from High Density Polyethylene and Totally Impermeable Film Tarped Broadcast Applications - English pdf
- September 2014 - ENF 2014-20 - Updates To Volume 3, Restricted Materials and Permitting, Pesticide Use Enforcement Program Standards Compendium: 1, 3-D Using Totally Impermeable Film for Strip Shank Applications
- August 2014 - Evaluation of "2013 Pesticide Use Data of Adjusted Pounds 1,3-Dichloropropene in California," Submitted by Dow AgroSciences on 04/25/14
- August 2014 - Comparison of One-Year Township Monitoring Results from Merced to SOFEA Simulation Results
- June 2014 - Calculations of Use Adjustment Factors for 1,3-Dichloropropene with the Use of Totally Impermeable Film for Strip Shank Applications
- June 2014 - HYDRUS Estimates of Cumulative 1,3-Dichloropropene and Chloropicrin Emissions from Low Permeability Tarp Strip Applications
- May 2014 - How to Calculate the Application Factor for New 1,3-Dichloropropene Application Methods
- May 2014 - ENF 2014-10 - Updates to Volume 3, Restricted Materials and Permitting: 1,3-Dichloropropene Pesticides (Field Fumigant) Recommended Permit Conditions
- October 2013 - Results from Sampling for Phosgene Using Salad Devices Positioned on Tarped Bedded Field Treated with Chloropicrin and 1,3-Dichloropropene - English pdf
- July 2013 - ENF 2013-16 - Updates to Volume 3, Restricted Materials and Permitting: Chloropicrin and Chloropicrin With 1,3-Dichloropropene (Field Fumigant) Recommended Permit Conditions
- July 2013 - ENF 2013-15 - Updates to Volume 3, Restricted Materials and Permitting, Pesticide Use Enforcement Program Standards Compendium - 1,3-Dichloropropene Pesticides (Field Fumigant) Recommended Permit Conditions
- May 2013 - Analysis of 1,3-Dichloropropene Emissions for Field One in the Lost Hills Study Considering High Flux Densities from the Bare Ground Near the Tarp Edge
- May 2013 - ENF 2013-06 - Volatile Organic Compound Emissions Reduction Methods Using Totally Impermeable Film (TIF) Tarpaulin
- April 2013 - Calculation of Use Adjustment Factors for 1,3-Dichloropropene with the Use of Totally Impermeable Film for Broadcast Shank Applications - English pdf
- March 2013 - Correction of Cumulative Volatilization Percentages as found in [0199-0138] - English pdf
- February 2013 - HYDRUS Simulation of Chloropicrin and 1,3-Dichloropropene Transport and Volatilization in the Lost Hills Fumigation Trials
- December 2012 - Reanalysis of Lost Hills Data for Consistency and Error Detection
- April 2012 - ENF 2012-04 - Glove Requirement on Soil Fumigant Labels
- December 2011 - Compilation of Studies Estimating Near Surface Concentrations of 1,3-Dichloropropene or Chloropicrin - English pdf
- January 2011 - Simulation of Three Untarped 1,3-Dichloropropene Flux Studies Using HYDRUS
- December 2009 - Subchronic 1,3-Dichloropropene Air Concentration Estimates
- December 2009 - Calculation of Screening Concentrations for 1,3-Dichloropropene
- January 2009 - Preliminary Evaluation of Dow AgroSciences Proposed Update to the California Management Plan: 1,3-Dichloropropene (July 15, 2008) - English pdf
- July 2008 - ENF 2008-21 - Volatile Organic Compounds (VOC) Field Fumigation Emission Reduction Regulations
- June 2008 - Use of LEACHM Model, LEACHP Version to Predict Volatilization Component of a Pesticide Lost from a Field Application
- March 2008 - Calculation of Method Use Fractions for 1,3-Dichloropropene
- February 2008 - ENF 2008-002 (Amended) - Simultaneous Application of Pesticides with Conflicting Labeling Requirements
- January 2008 - ENF 2008-001 - Updates to Volume 3, Restricted Materials and Permitting, Pesticide Use Enforcement Program Standards Compendium
- April 2007 - Simulation of Concentrations and Exposure Associated with Updated Township Caps for Merced County for 1,3-Dichloropropene
- March 2007 - Simulation of Concentrations and Exposure Associated with Dow AgroSciences - Proposed Township Caps for Merced County for 1,3-Dichloropropene - English pdf
- March 2007 - Simulation of Concentrations and Exposure Associated with Dow AgroSciences - Proposed Township Caps for Ventura County for 1,3-Dichloropropene - English pdf
- February 2005 - Variability in Daytime Stability Class Designation under Partly Foggy Conditions in a Monitoring Study - English pdf
- September 2002 - ENF 2002-037 - Recommended Permit Conditions for Using 1,3-Dichloropropene Pesticides (Fumigant)
- December 2001 - ENF 2001-054 - Field Crop Site Designation on InLine® Soil Fungicide
- August 2001 - ENF 2001-040 - Suggested Permit Conditions for Using 1,3-Dichloropropene Pesticides (Fumigant) - English pdf
- June 2001 - ENF 2001-031 - Suggested Permit Conditions for Using 1,3-Dichloropropene Pesticides (Fumigant) - English pdf
- January 1997 - Risk Assessment of 1,3-Dichloropropene - English pdf
Historic Documents
- May 2024 - Pesticide Registration and Evaluation Committee Meeting Minutes
- May 2024 - Presentation on 1,3-Dichloropropene Use Tracking Website Launch Overview
- January 2022 - Presentation on Air Monitoring of Workers During Loading and Application of Fumigants
- November 2021 – Presentation on Updates on the 1,3-Dichloropropene Mitigation Pilot Study
- March 2021 – Presentation on 1,3-D Pilot Project Update
- December 2020 – Presentation on 1,3-D Pilot Projects
- May 2020 – Presentation on 1,3-D Mitigation and Pilot Studies
- July 2018 – Pesticide Registration and Evaluation Committee Meeting Agenda
- July 2018 – Pesticide Registration and Evaluation Committee Meeting Minutes
- July 2018 – Presentation on the Development of Regulations for 1,3-Dichloropropene
- August 2017 – Methyl Bromide, 1,3-Dichloropropene, and Chloropicrin Air Monitoring Results for 2010-2016
- December 2016 – Memorandum of Understanding between Dow AgroSciences and DPR
- November 2016 – Summary of Ambient Air Monitoring for 1,3-Dichloropropene, Methyl Bromide and Chloropicrin, 2010-2015
- November 2016 – Pesticide Registration and Evaluation Committee Meeting Agenda
- November 2016 – Pesticide Registration and Evaluation Committee Meeting Minutes
- November 2016 – Presentation on 1,3-Dichloropropene Mitigation
- 2016 – 1,3-Dichloropropene: Hazard Identification and Risk Assessment for Occupational and Bystander Inhalation Exposure Poster
- 2016 – Oncogenic Potency and Risk to Workers and the General Public from Inhaled 1,3-Dichloropropene Poster
- May 2015 – Summary of Ambient Air Monitoring for 1,3-Dichloropropene, Methyl Bromide and Chloropicrin, 2010 - 2014
- September 2014 – Methyl Bromide and 1,3-Dichloropropene Air Monitoring Results
- March 2014 – Pesticide Registration and Evaluation Committee Meeting Agenda
- March 2014 – Pesticide Registration and Evaluation Committee Meeting Minutes
- March 2014 – Presentation on 1,3-Dichloropropene Update
- February 2014 – Suspension of Exceptions to Township Limitations on Use
- February 2014 – Recommendation on Township Cap Exception Requests
- June 2013 – Recommended Permit Conditions
- September 2009 – Review of Proposed Update to the California Management Plan
- July 2009 – Bystander Exposure Assessment for the Pesticide 1,3-Dichloropropene
- November 2008 – 1,3-Dichloropropene (Telone): Protecting Bystander & Worker Health
- April 2008 – Summary of Ambient Air Monitoring for Methyl Bromide and 1,3-Dichloropropene
- 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 – Estimating Residential Mobility for the Assessment of Lifetime Exposure to 1,3-Dichloropropene
- 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)
- June 2005 – Monitoring a 1,3-Dichloropropene/Metam Sodium Application in Del Norte County (Appendices, Laboratory Method)
- May 2005 – Interim Statewide Caps Analysis for 1,3-Dichloropropene
- May 2004 – Evaluation of the Need to Revise the Occupational Exposure Assessment for 1,3-Dichloropropene
- May 2004 – Pesticide Product Label Evaluation: Telone C-17 CA
- May 2004 – Pesticide Product Label Evaluation: Telone C-35 CA
- May 2004 – Pesticide Product Label Evaluation: Telone II CA
- April 2004 – Review of Data to Support Request to Decrease Buffer Zone for 1,3-Dichloropropene to 100 Feet (Registration Tracking ID #204019, #204020, and #205697)
- March 2004 – Revised Exposures to 1,3-Dichloropropene in Kern County Based on Corrected Data for the Summer 2001 Monitoring by the California Air Resources Board
- January 2003 – Review of "Supporting Information for California Management Plan for Telone® and In-Line® Fumigants" from Dow AgroSciences (Assignment 03-0005)
- September 2002 – Exposures to 1,3-Dichloropropene in Monterey and Santa Cruz Counties Based on the Fall 2001 Monitoring by the California Air Resources Board
- September 2002 – Exposures to 1,3-Dichloropropene in Kern County Based on the Summer 2001 Monitoring by the California Air Resources Board