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State of California Department of Pesticide Regulation
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CAC Letters Archive

Updates to Compendium Volume 1

March 24, 2026

Pesticide Use Enforcement Program Standards Compendium Volume 6 – Enforcement Response to Pesticide Use Violations 

March 24, 2026

Federal Endangered Species Act (ESA) and U.S. EPA Ecological Mitigation Measures Training

March 26, 2026

Cinching/Choking of the Aeration Ducting is Not an Acceptable Method When Using the California Aeration Plan

March 23, 2026

Pesticide Use Report Program Commodity Code Updates

March 9, 2026

Updates to Pesticide Use Enforcement Program Standards Compendium Volume 3, Restricted Materials and Permitting: Appendices J (1,3-Dichloropropene) and N (Volatile Organic Compounds)

March 23, 2026

Updated Instructions for Processing CalEPA Complaints

February 26, 2026

Licensed Cannabis Cultivation – Guidance for Pesticide Use Enforcement

February 6, 2026

Director’s Decision on Appeal of Butte County Agricultural Commissioner’s Decision (Harris Farms, Docket Number 230)

February 3, 2026

New Notification and Reporting Requirements for Pesticide Use Near Schoolsites

December 17, 2025

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