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Dizziness is an early symptom of pesticide overexposure. Supervisors must stop work, remove the worker from exposure, and seek medical evaluation. PPE and ventilation should be reviewed against SDS recommendations. Cotton masks (B) do not protect against vapors. Finishing the task (C) or ignoring (D) endangers the worker. STS supervisors must reinforce pesticide safety training, review substitution options, and document the incident. Monitoring and preventive measures protect workers and ensure compliance.

Using cars during evacuations creates traffic congestion, blocks responders, and risks exposure in uncontrolled directions. Emergency action plans require orderly pedestrian evacuation to safe assembly points where accountability can be confirmed. Supervisors must reinforce this in drills, train workers on routes, and communicate the reasons (life safety and emergency access). Allowing free departure (A) undermines accountability. Department-assigned vehicles (C) complicate response and is not feasible. Allowing management to leave first (D) sets a poor ethical example. STS-level supervisors ensure drills include role assignments (wardens, roll call), communication procedures, and after-action reviews to build compliance and confidence.

Cold stress causes frostbite and nerve damage. Supervisors must provide insulated gloves/clothing and ensure warm-up breaks. Working faster (B), ignoring (C), or rotation (D) fail to mitigate hazard. STS supervisors must monitor conditions, enforce thermal stress guidelines, and document corrective actions. Worker feedback ensures PPE usability.

The hierarchy of controls prioritizes elimination, substitution, engineering, administrative, and finally PPE. Persistent injuries despite PPE and training indicate that lower-level controls are insufficient. Engineering controls that physically separate or guard the hazard are preferred. Guarded, interlocked cutting devices reduce contact opportunity and do not rely on consistent behavior, making them more reliable than administrative or PPE measures alone. Reinforcing policy and training (B) and discipline (C) are administrative controls subject to human error and fatigue; they may support but rarely solve persistent injury patterns. Upgrading PPE (D) may reduce severity but still permits exposure and may introduce dexterity issues. STS objectives require supervisors to analyze incident trends, perform task observations, and recommend higher-order controls to achieve sustainable risk reduction. Implementing guards or interlocks also demands change management: involving operators in design, ensuring maintainability, and verifying that no new hazards (e.g., bypassing interlocks) are introduced. Post-implementation monitoring and leading indicators (first-aid cases, near misses) help validate effectiveness.

Emergency lighting ensures safe egress during outages. Providing flashlights (A) or relying on phones (D) is inconsistent and unreliable. Canceling shifts (C) is impractical. STS supervisors must ensure emergency lighting systems are installed, tested monthly, and documented per NFPA and OSHA requirements. Training workers on evacuation routes and conducting night drills validate readiness. Proactive planning demonstrates leadership and compliance.