Pesticide Labeling MEDIUM 40 CFR § 170.407 & 40 CFR § 170.603

A specimen label states: 'Restricted Entry Interval (REI) is 24 hours.' Under the EPA Worker Protection Standard (40 CFR Part 170), what is prohibited during this 24-hour window?

SPECIMEN LABEL EXCERPT • CHLORO-GUARD 4E Agricultural Insecticide WARNING

EPA Reg. No: 62719-220 • Active Ingredient: Chlorpyrifos 44.9%

Multiple Choice Options

A Operating irrigation equipment from outside the treated boundary.
B Entry of agricultural workers into the treated area to perform hand labor without specialized Early-Entry PPE and WPS notification. ✓ OFFICIAL VERIFIED CORRECT ANSWER
C Driving a certified enclosed-cab vehicle with positive-pressure air filtration across a public access road.
D Storing unopened containers of the same pesticide in an adjacent certified chemical storage shed.
✓ LEGAL EXPLANATION & STATUTORY RATIONALE
40 CFR § 170.407 & 40 CFR § 170.603
Official Manual Chapter: Chapter 3: Pesticide Labeling & Chapter 4: WPS

Under 40 CFR § 170.407 and § 170.603, an agricultural employer must ensure that no agricultural worker enters or remains in any treated area before the restricted-entry interval specified on the pesticide labeling has expired, unless the worker meets specific early-entry exceptions with full early-entry PPE and WPS training.

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