Worker Protection Standard - Greenhouse
Facilities
CALS Policy
The Worker Protection Standard (WPS) is an amendment to FIFRA (the
Federal Insecticide, Fungicide, and Rodenticide Act), a federal law
which regulates pesticide registration and use. WPS is designed to
protect agricultural workers (people involved in the production of
agricultural plants) from the risks of exposure to pesticides. The
Cornell community includes persons not covered by WPS (e.g., students
who are not employees of Cornell). It is the desire of the College to
protect all members of its community in the spirit of WPS. The
following guidelines will serve to provide more information and
protection to students, faculty, staff, and visitors.
CLASS USE
- Instructors and students who use greenhouses or handle plants
brought from greenhouses as part of undergraduate course work
should be informed of the law at a level appropriate to the degree
of anticipated exposure. At a minimum, this should consist of
instructions not to enter a posted greenhouse and a reminder to
wash hands after handling plants or plant materials. A "prompt"
(poster with instructions on back) is available from Mary-Lynn
Cummings to assist instructors in providing this information.
- Students and instructors may enter greenhouses which have been
sprayed only after the posted Restricted Entry Interval (REI) has
expired. No plant materials may be removed from a greenhouse for
classroom use during a REI.
- Instructors and students having contact with plant material
must wash their hands with soap and water immediately upon leaving
the treated area or upon completion of work with treated plant
materials.
CLASS USE - SUGGESTIONS
In order to minimize interference from regulatory requirements,
particularly the need to provide personal protective equipment (PPE)
to classes, instructors and greenhouse management should follow these
suggestions:
- Carry out chemical pest control procedures late on Fridays.
Regardless of Toxicity Class of the pesticide used, the REI will
be expired by Monday morning.
- Limit use of Toxicity Class I and II pesticides.
- Consider alternative pest control strategies (cultural,
biological, mechanical, etc.).
- Do not treat plants housed in corridors. Treatment in
corridors would require shutting down the entire facility until
the REI has expired.
- Faculty should notify greenhouse managers of their greenhouse
class schedule no later than one week prior to the start of the
semester. Faculty should also discuss their pest control
requirements with greenhouse management so that appropriate pest
management strategies may be selected.
RESEARCH USE [faculty, staff, and students (including work
study)]
- All research faculty, staff, and students who work in
greenhouses, who are not certified pesticide applicators, must
have valid WPS worker or handler training cards.
- Only a certified pesticide applicator or WPS trained handler
may be in a greenhouse during pesticide application.
- For early entry to greenhouses (during the REI) with contact:
Only certified pesticide applicators, trained handlers, and
trained early entry workers may enter a treated area during the
REI when contact with pesticide residues is expected. Everyone
must always wait a minimum of four (4) hours after the pesticide
application before entry. PPE, including a respirator if
ventilation criteria have not been met, must be worn according to
label requirements.
- For early entry to greenhouses (during the REI) with no
contact: Early entry is allowed without PPE if contact with
pesticide-treated surfaces will not occur and ventilation criteria
have been met. But the following must be provided:
- WPS pesticide safety training (or certified pesticide
applicator)
- Information at a central location
- Notification
- Restrictions during application and during the REI (such as
meeting the ventilation criteria)
- Emergency assistance
(This policy does not include visitors)
- Supply and maintenance of any PPE required for research work
is the responsibility of the Principal Investigator.
- There are no exceptions to the requirement to supply specific
pesticide application information to the greenhouse manager for
central posting prior to the application.
- Only certified pesticide applicators or persons with valid WPS
handler training may access pesticide storage areas.
- Applications of experimental pesticides must be posted. Unless
the manufacturer has supplied explicit requirements for PPE,
including an LD50 for the material, it must be treated as a
Toxicity Class I pesticide with a 48 hour REI.
RESEARCH USE - SUGGESTIONS
In order to minimize interference from regulatory requirements,
faculty and greenhouse management should follow these
suggestions:
- Apply pesticides in the late afternoon (Fridays, if possible)
and ventilate in the early morning.
- Use Toxicity Class III and IV pesticides whenever possible.
PPE for early entry will then be minimal - long pants and
long-sleeved shirt with gloves or less if the label permits.
Toxicity Class I materials have an additional requirement to warn
all greenhouse personnel orally.
- Avoid the need for early entry in the research design.
Consider crop watering needs in advance.
VISITOR USE
Visitors may not be granted access to greenhouse areas until any
applicable REIs have expired. Visitors must be given clear
instructions not to handle plants.
Visiting scientists may have anywhere from very little to a great
deal of contact with treated materials. The primary host of the
visiting scientist is responsible for judging the potential exposure
and providing the appropriate information relating to any pesticide
applications.