RI Pesticide Applicator study materials
RI Pesticide Applicator study resources

Restricted-Entry Interval and Worker Protection at a Small Farm

RI Pesticide Applicator · Put your knowledge to work in context.

All case studies

Restricted-Entry Interval and Worker Protection at a Small Farm

A small diversified farm applies an insecticide to a 2-acre block of peppers on a Monday morning. The label carries a 24-hour restricted-entry interval (REI) and a 3-day preharvest interval (PHI), and requires handlers to wear coveralls, chemical-resistant gloves, and eye protection. The farm has two employees: one is a handler who mixes and loads, the other is a worker who weeds and harvests in adjacent blocks. The worker's normal route to the packing shed crosses the treated pepper block. The applicator finishes at 10:00 a.m. Monday. The worker is scheduled to harvest peppers Wednesday morning. The farm has no posted warning signs and no decontamination station at the field. The applicator plans to let the worker cross the treated block Monday afternoon 'since it is just walking through.'

1. Evaluate the planned worker activities against the label's REI and PHI. What is permitted and what is not?

Read the worked answer

The REI is 24 hours from the end of application. The application ended at 10:00 a.m. Monday, so the REI runs until 10:00 a.m. Tuesday. During the REI, entry is restricted except for early-entry workers meeting label requirements (training, PPE, and any label-specified conditions); the worker's Monday afternoon crossing is not permitted. The applicator's 'just walking through' rationale does not create an exception.

The PHI is 3 days. Harvesting Wednesday morning is within 3 days of Monday's application (Monday to Thursday would be 3 days), so a Wednesday harvest would violate the PHI. The worker should not harvest until the PHI has passed (Thursday morning at the earliest, counting from the application date as the label defines it). The adjacent-block weeding is outside the treated block and is not restricted by this label's REI, provided the worker does not enter the treated block.

2. What worker-protection elements are missing, and how should the farm correct them before the next application?

Read the worked answer

Missing elements:

  • Warning signs: the label requires the REI to be communicated; the farm has no posted signs. The farm should post warning signs at the treated block entrances with the REI end time, or use the label's required notification method.
  • Decontamination station: the label requires handlers to have access to soap, water, and single-use towels for decontamination; there is none at the field. The farm should set up a portable decontamination station with enough water for the number of handlers.
  • Route: the worker's normal route crosses the treated block. The farm should establish an alternate route to the packing shed during the REI.
  • Training and PPE: confirm the worker has WPS-type training and that the handler has the required PPE (coveralls, chemical-resistant gloves, eye protection) available and used.
  • Records: keep application records, REI/PHI dates, and training records.

Correcting these before the next application prevents both exposure and compliance violations.

3. The worker asks whether they can just wear gloves and cross the block Monday afternoon. How should the supervisor answer, and what are the consequences of allowing it?

Read the worked answer

The supervisor should say no. The REI restricts entry regardless of PPE unless the entry qualifies as a permitted early-entry task under the label and WPS rules, which requires training, specified PPE, and often a handler to monitor; a casual crossing to reach the packing shed is not a permitted early-entry activity. PPE does not convert a prohibited entry into an allowed one.

Consequences of allowing it: potential pesticide exposure and illness, a violation of the label's REI and worker-protection requirements, and liability for the farm. The correct action is to provide an alternate route and wait until 10:00 a.m. Tuesday, then observe the PHI before harvest. The supervisor should document the decision and the alternate route.