&EPA
                                        March 2012
                                                    EPA 735-F-12-008
    United States
    Environmental Protection
                     Soil Fumigant Mitigation Factsheet:
                              Worker  Protection  Measures
          EPA is requiring important new safety measures for soil fumigant pesticides to increase protections for
          agricultural workers and bystanders ~ people who live, work, or otherwise spend time near fields that are
          fumigated. These measures are for the soil fumigants chloropicrin, dazomet, metam sodium/potassium,
          and methyl bromide.

          This fact sheet summarizes new requirements to protect fumigant handlers and other workers from
          fumigant exposures.
      Handler activities on
              labels
    On-site supervision and
             training
To address risks to fumigant handlers and workers, EPA is requiring:

A clear description of handler activities on labels
All persons performing the following handler activities at any time must be
trained and equipped as handlers in accordance with the requirements in the
WPS (40 CFR Part 170):
      Monitoring fumigant air concentrations;
      Cleaning up fumigant spills (this does not include emergency
       personnel not associated with the application);
      Handling or disposing of fumigant containers; and
      Cleaning, handling, adjusting, or repairing the parts of application
       equipment that may contain fumigant residues.

All persons performing the following handler activities in the application block
during the application until the entry restricted period ends and in the buffer
zone during the buffer zone period must be trained and equipped as handlers in
accordance with the requirements in the WPS (40 CFR Part 170):
      Participating in the application as supervisors, loaders, drivers, tractor
       co-pilots, shovelers, cross ditchers, or as other direct application
       participants;
      Installing, repairing, operating, or removing irrigation equipment;
      Performing scouting, crop advising, or monitoring tasks;
      Installing, perforating (cutting, punching, slicing, poking), or removing
       tarps; and
      Repairing or monitoring tarps until 14 days after application is
       complete if tarps are not perforated and removed during those 14 days.

On-site supervision and training
      Direct, on-site supervision by certified applicators during most
       fumigant applications
      New training for certified applicators who supervise fumigant
       applications
      New training information for other handlers.
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  Respiratory protection         Respiratory protection requirements
        requirements                     Handlers must either stop work and leave the area or use air-purifying
                                            respirators if they experience sensory irritation (this does not apply to
                                            methyl bromide formulations with less than 20% chloropicrin)
                                            For methyl bromide formulations with less than 20% chloropicrin.
                                            handlers must wear air-purifying respirators during handling activities
                                            Air monitoring while handlers use respirators to ensure concentrations
                                            do not exceed the upper working limit of respirators
                                            All handlers who will wear a respirator must be fit-tested, trained, and
                                            medically examined to  ensure they do not have health problems such
                                            as a heart condition that could make use of a respirator dangerous
                                            An air purifying respirator with the appropriate cartridges must be
                                            available for each handler who will wear a respirator.

    Tarp perforation and         Tarp perforation and removal requirements
   removal requirements               If tarps are used, they may not be perforated until at least 5 days (120
                                            hours) have elapsed after the application is complete unless a weather
                                            condition exists that necessitates early removal
                                            Tarp removal may not begin until at least 2 hours after tarp perforation
                                            is complete and tarp removers must follow respiratory protection
                                            requirements
                                                o   For methyl bromide, air monitoring with direct-read
                                                    instruments is required before tarp removal can begin
                                            If tarps are not removed, planting may not begin until at least 48 hours
                                            after tarp perforation is complete
                                            If tarps are left on the soil for at least  14 days after the application is
                                            complete, planting may begin when the tarps are being perforated
                                            Tarps must be perforated using mechanical methods (e.g., all-terrain
                                            vehicles with cutting implements) except for small areas (less than 1
                                            acre), at the start of a row, and during flood prevention activities.

  Entry-restricted period         Entry-restricted period requirements
        reauirements                  *   Entry into treated fields (including early entry that would otherwise
                                            be permitted under the WPS) by any person other than a trained and
                                            equipped handler is prohibited from the start of the application until
                                                o   5 days (120 hours) after application is complete for untarped
                                                    applications, or
                                                o   After tarps are perforated and removed if tarp removal is
                                                    completed less  than 14 days after application, or
                                                o   48 hours after tarp perforation is complete if they will not be
                                                    removed at least 14 days after the application, or
                                                o   5 days (120 hours) after application is complete if tarps are
                                                    not perforated and removed 14 days after the application is
                                                    complete.
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Entry Restricted Period by Scenario
If the application
is[ ]

1.
2.
3.
4.

Untarped
Tarped
Tarped
Tarped
and Tarp is
r i



Perforated and
Removed
Perforated BUT
NOT Removed
Perforated and/or
Removed
T 1 days after
application is
completed


Within 14 days
Within 14 days
More than 14 days
workers may
enter [ 1

5 days after application is
complete
After tarp is removed
48 hours after tarp
perforation is complete
5 days after application is
complete
For additional information, please see EPA's Soil Fumigant Toolbox, www.epa.gov/oppsrrd 1/reregistration/soil_fumigants/.
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