Pesticide Use Enforcement Programs


Agricultural Commissioner Sealer of Weights and Measures

Greg Clark, Agricultural Commissioner Sealer of Weights and Measures

Pesticide Use & Enforcement Program

Field Worker - Wide shotOperator Identification Numbers and Restricted Materials Permits:    

Prior to purchasing or applying pesticides, growers and businesses must obtain or renew an operator identification number (OP ID) or restricted materials permit (RM). The annual renewal process begins by appointment in December. During the renewal contact information, sites, compliance agreements, crop statistics and pesticides are reviewed and updated. Please contact our office to make an appointment (707) 253-4357.


Business Registrations:  

The Napa County Agricultural Commissioner’s Office registers maintenance gardeners, structural and agricultural pest control businesses, aircraft pilots, pest advisers, and farm labor contractors. For a list of registration fees, click here. Please contact our office for an appointment (707) 253-4357.


Effective and comprehensive pesticide use compliance monitoring is essential for the safety of pesticide handlers, fieldworkers, the public and the environment.  Our office inspects both agricultural and non-agricultural settings to ensure compliance with all safety regulations.  Our office performs pesticide application, field worker safety, pesticide storage and disposal, as well as annual records inspections.

Compliance & Enforcement: 

Our office strives to ensure “compliance through education,” however if those efforts fail several compliance or enforcement actions may be taken. Compliance actions include letters of warning, notices of violation, and documented compliance interviews. If the case involves serious worker safety violations or environmental or property damage, an enforcement action may be warranted. When an enforcement action is initiated, a Notice of Proposed Action (NOPA) is drafted that outlines the violations, and a fine is proposed. Those who are issued a NOPA are afforded due process rights. 3CCR 6130 & 6128 respectively.

Pesticide Use Reports:

Pesticide use reports are required to be submitted by the 10th of each month following the month of application. The most efficient way to submit reports is CalAgPermits. Please contact us to help you set-up with a CalAgPermits webuser account, at 707-253-4357. 


Production Monthly Agricultural Pesticide Use Report (PUR)  Monthly Summary Pesticide Use Report (MSPUR)  Seven Day Use Report  Zero Use Report 
Generally, Growers and pest control businesses applying pesticides for the production of an agricultural commodity. Growers and pest control businesses making applications to non-crop areas on an agricultural property. Pest Control Businesses hired to make a custom application to properties they do not operate. Pest Control Businesses and Structural Pest Control Operators who did not perform any applications that month, within the county.
  Maintenance Gardeners, Structural Pest Control Businesses and companies that use SO2.    

Pesticide Use forms:  

   Farm Labor Contractor    

  County Registration Form   
Spraying Medium Field Worker Forms: 
  A9 - Pesticide safety rules for farm workers. 
  A9 – Normas de seguridad con pesticidas para los trabajadores
  Training records (English) (Spanish)
  Application specific Information  

  Pest Control Business Forms:   

  Ag Pest Adviser Registration
  Aircraft Pilot Registration
  Branch Registration Forms (Branch 1Branch 2 & 3)
  Compliance assistance handouts for employers (CDPR)
  Equipment registration
  Maintenance Gardener Registration  
  PCB Registration
  DPR Non-Agricultural Pesticide Safety Series N 1- 8  

 Pesticide Handler Information: 

  A8 – Safety Rules for Pesticide Handlers on Farms 
  A8 – Normas De Seguridad Para Los Que Manejan Pesticidas En Los
  Application Specific Information
  Training Records (English(Spanish)
  Written Training Program (English) (Spanish)
  Emergency Medical Care Information
  DPR Agricultural Pesticide Safety Series A 1 - A 10 (English) (Spanish) 


  HS 1514 Handout – (English) (Spanish
  Voluntary Respirator Protection Program

Private Applicator Certification (PAC):   

Growers who use restricted materials, have employees that apply pesticides, or employees who work in pesticide-treated fields are required to have a private applicator certificate (PAC). The PAC exam is administered, in English and Spanish, in our office, Monday-Friday 8-3PM.  The certificate is valid for three-years and may be renewed with 6 hours of continuing education or by re-examination.  

Training and Outreach:  

Each year, the Agricultural Commissioner’s Office sponsors continuing education classes geared toward providing credits for private applicator certificate holders and State Licensees. In partnership with industry and educational groups we have created a multitude of outreach and educational events.