Department of Pesticide Regulation
Mary-Ann Warmerdam
Director
  Arnold Schwarzenegger
Governor
 
 
November 5, 2010
 
  ENF 10-22
WHS 10-05
 
TO:
County Agricultural Commissioners
SUBJECT:
RECOMMENDED PERMIT CONDITIONS FOR METAM SODIUM, METAM POTASSIUM, AND DAZOMET

UPDATES TO VOLUME 3, RESTRICTED MATERIALS AND PERMITTING, PESTICIDE USE ENFORCEMENT PROGRAM STANDARDS COMPENDIUM

TRAINING SCHEDULE FOR SOIL FUMIGANTS AND RESPONSES TO QUESTIONS
 

The Department of Pesticide Regulation (DPR) has approved the following nine recommended permit conditions for specific field soil fumigation application methods when applying metam sodium, metam potassium, and dazomet. The recommended permit conditions have been organized by application method at the request of county agricultural commissioner (CAC) staff.

Field soil fumigation methods include the following:

  1. Dazomet Field Soil Fumigation Recommended Permit Conditions
  2. Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Drench Applications
  3. Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Drip Applications
  4. Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Flood Applications
  5. Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Power Mulcher and Rotary Tiller (Rototiller) Applications
  6. Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Rod Bar Applications
  7. Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Shank Applications
  8. Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Spray Blade with Soil Cap Applications
  9. Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Sprinkler Applications

Implementation and Training
DPR is phasing in the effective date of the recommended permit conditions by region and is coordinating training with U.S. EPA’s soil fumigant label training currently under development by DPR. The enclosed Implementation and Training Schedule was determined after reviewing pesticide use patterns for the most current four-year period. DPR selected implementation and training times to coincide with periods of little or no metam sodium, metam potassium, or dazomet use.

To attend one of the training sessions on the enclosed Implementation and Training Schedule, contact Mr. Mostafa Chrichi by e-mail at mchrichi@cdpr.ca.gov no later than two weeks prior to the training. A confirmation e-mail will be sent to you.

Please review the enclosed recommended permit conditions prior to the training. Bring your Restricted Materials and Permitting manual to the training. If you do not have a copy, it is available on-line at the web address indicated below.

Please note that until such time as the new permit conditions become effective in your region, you should continue to use the existing permit conditions.

Update to Volume 3, Restricted Materials and Permitting
Add these recommended permit conditions to Appendix C.7 in Volume 3, Restricted Materials and Permitting, of the Pesticide Use Enforcement Program Standards Compendium. Hard copies of the updates will not be distributed. Updates are enclosed and also available online at http:/docs/enforce/compend/vol_3/rstrct_mat.htm. It is recommended the sections be printed back-to-back, where applicable. Remove the old sections from the manual and insert the new sections as indicated on the enclosed “Updates-Replacement Page Instructions: 10-10”.

Responses to CAC Comments
We thank you and your staff for your participation throughout this long process to mitigate bystander exposure to methyl isothiocyanate (MITC). Your comments, suggestions, and the opportunity to observe field applications helped us better understand many of the concerns growers and applicators raised during public meetings and have lead to more useful permit conditions. We have also enclosed a summary of all comments received in 2009 and 2010 and the Worker Health and Safety Branch’s responses for your information.

If you have any questions, please contact your Enforcement Branch Liaison.

 
Sincerely,
 
 
Original Signature by: Original Signature by:
 
Nan Gorder, Ph.D.
Chief, Enforcement Branch
916-324-4100
Sue Edmiston
Chief,Worker Health and Safety Branch
916-445-4222
 
Enclosures:
Dazomet Field Soil Fumigation Recommended Permit Conditions, PDF (61 kb)
Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Drench Applications, PDF (74 kb)
Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Drip Applications, PDF (44 kb)
Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Flood Applications, PDF (59 kb)
Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Power Mulcher and Rotary Tiller (Rototiller) Applications, PDF (45 kb)
Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Rod Bar Applications, PDF (76 kb)
Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Shank Applications, PDF (79 kb)
Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Spray Blade with Soil Cap Applications, PDF (44 kb)
Metam Sodium and Metam Potassium Field Soil Fumigation Recommended Permit Conditions for Sprinkler Applications, PDF (81 kb)
Appendix C Department of Pesticide Regulation Recommended Permit Conditions, PDF (18 kb)
MITC Mitigation Response to Comments on the July 2009 Draft MITC Mitigation Proposal, PDF (144 kb)
MITC Mitigation Response to Comments on the 2010 Draft MITC Mitigation Proposal November 3, 2010, PDF (76 kb)
Implementation and Training Schedules MITC-Generating Pesticides Recommended Permit Conditions, PDF (12 kb)
Section C.7 Soil Fumigations, PDF (17 kb)
Subsection C.7.2 Metam Sodium, Metam Potassium, and Dazomet Field Soil Fumigation Recommended Permit Conditions, PDF (12 kb)
Volume 3 - Restricted Materials and Permitting Updates Replacement Page Instructions October 2010, PDF (13 kb)

cc:   Mr. Thomas Babb, DPR Agricultural Commissioner Liaison
        Enforcement Branch Liaisons

1001 I Street  ·   P.O. Box 4015  ·  Sacramento, California 95812-4015  ·   www.cdpr.ca.gov
A Department of the California Environmental Protection Agency