The Re-Entry Interval Conflict on a Sweet Corn Block
A 12-acre sweet corn field was treated with a product whose label lists a 12-hour restricted-entry interval (REI) and requires handlers to wear chemical-resistant gloves and a long-sleeved shirt during mixing. The crew of six hand-harvesters is scheduled to begin picking at 7:00 a.m. The application finished at 9:30 p.m. the previous evening. Overnight rain of 0.8 inch fell, and the grower has read that rain can reduce residue. A supervisor instructs the crew to start at 6:00 a.m. because the field is dry and the crop is behind schedule. One worker is 17 years old and has not yet completed required pesticide safety training. The grower has no posted warning signs at field entrances.
1. At what time may the crew legally enter the treated field, and what does the rain change?
Read the worked answer
The label REI is 12 hours. Count the interval from the end of the application, not the start. Application ended 9:30 p.m., so the earliest legal entry is 9:30 a.m. the next morning. Rain does not shorten a label REI; only a label statement that specifically allows early entry after rain (or a shorter interval under stated conditions) would change it, and none is given here. The 6:00 a.m. instruction is a violation. The supervisor must be corrected before any worker enters, and entry should be documented as beginning no earlier than 9:30 a.m. unless the label's own early-entry provisions apply.
2. What are the compliance problems with the 17-year-old worker and the missing warning signs?
Read the worked answer
Two separate issues. First, the young worker: under the Worker Protection Standard, workers must receive pesticide safety training before working in an area where an REI has been in effect in the last 30 days, and the training must be delivered in a manner the worker can understand. An untrained worker cannot simply be sent in. Age alone is not the WPS trigger, but an untrained worker is a clear violation regardless of age; confirm whether any state or federal rule for this operation imposes an additional minimum-age restriction for pesticide handling. Second, posting: when a label requires an REI, the employer must post warning signs at entrances (or use the label-specified method) so workers know not to enter. Missing signs at all entrances is a posting violation. The fix is to train before entry, post at every entrance, and keep records of both.
3. The grower argues the field is dry and the crop is behind, so the risk is low. How should the applicator respond, and what records should exist?
Read the worked answer
Risk perception does not override a label REI. The applicator should state plainly that entry before 9:30 a.m. is prohibited, that rain does not reset or shorten the interval, and that the supervisor's instruction must be withdrawn. Records to keep: application date/time of completion, product and EPA registration number, REI and any early-entry restrictions, the posting method and locations, worker training dates and trainer identity, and a written record of the corrected entry time. If any worker did enter early, document it and treat it as a reportable incident requiring follow-up, not a paperwork fix.