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State of California Department of Pesticide Regulation - page 105 / 132

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102 • FUMIGATION WORKER SAFETY

  • the feasibility of repair

  • environmental factors like wind

speed and direction The ambient air near the tarp that needs repair must be tested for methyl bromide concentration. This must be done using a label-specified testing device, and it must be done by one of the following:

  • a certified applicator employed by the pest control business that made the application

  • a certified applicator employed by the permittee

  • a certified applicator permittee

Certified applicators must wear respiratory protective equipment when they conduct these tests. All repair work areas must test less than 5 ppm methyl bromide before any employee not wearing respiratory protection can be allowed to enter and conduct tarp repair. That employee is limited to one work hour in a 24-hour period.

Warning signs. See Chapter 6, page 90, “Warning and Posting Require- ments,” regarding warning signs for field fumigation.

REVIEW QUESTIONS

  • 1.

    Employers must provide and require employees to wear approved respiratory equipment when

    • a.

      fumigant concentrations are ept below the Permissible Exposure Limit

    • b.

      fumigant concentrations are controlled at safe levels

    • c.

      the fumigants being used are non-toxic to people

    • d.

      fumigant concentrations cannot be controlled

  • 2.

    A fumigation accident response plan must be located

    • a.

      in the employer’s files

    • b.

      on the employee bulletin board

    • c.

      at each wor site

    • d.

      in one of the employees’ vehicles

  • 3.

    When a fumigated enclosed space is being entered to facilitate aeration, how many trained employees must be present?

    • a.

      none

    • b.

      one

    • c.

      two

    • d.

      four

(answers on page 119)

  • 4.

    Before starting any fumigation, you must post plainly-visible warning signs

    • a.

      at all entrances to the space

    • b.

      around the main entrance to the space

    • c.

      at three or more locations around the space

    • d.

      at a central location close to the space

  • 5.

    For soil fumigation using methyl bromide, posting signs must be placed

    • a.

      at the main entrance to the fumigated field

    • b.

      at 1/4 mile intervals around the field

    • c.

      so they are visible at all usual points of entry to the field, at each end of the field, and along the border at intervals no greater than 600 feet

    • d.

      at all usual points of entry to the field

  • 6.

    The purpose of combining chloropicrin with methyl bromide for fumigation is to

    • a.

      to reduce the amount of methyl bromide used

    • b.

      speed up the penetration of methyl bromide into the soil

    • c.

      have the chloropicrin serve as a warning agent

    • d.

      lessen the toxicity of the methyl bromide to people

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