A construction site in Fresno reaches an ambient temperature of 95°F with 40% humidity. According to Cal/OSHA heat illness prevention requirements, what is the minimum frequency for providing water breaks to employees performing moderate work?
Correct Answer
C) Every 15 minutes
At 95°F, Cal/OSHA requires water breaks every 15 minutes for employees performing moderate to heavy work to prevent heat illness.
Why This Is the Correct Answer
At 95°F, Cal/OSHA heat illness prevention regulations require employees performing moderate to heavy work to receive water breaks at a minimum frequency of every 15 minutes. This threshold temperature triggers the most frequent mandatory hydration schedule to prevent heat exhaustion and heat stroke.
Why the Other Options Are Wrong
Option A: Every 30 minutes
Every 30 minutes is not sufficient at 95°F. While 30-minute intervals might apply at lower temperature thresholds, once the temperature reaches 95°F the regulation requires water every 15 minutes for moderate or heavy exertion.
Option B: Every 2 hours
Every 2 hours is far too infrequent at 95°F and would put workers at serious risk of heat illness. No Cal/OSHA heat regulation allows such long gaps between water breaks in high-temperature conditions.
Option D: Every hour
Every hour is not compliant at 95°F. Hourly water breaks may be a common informal practice but do not meet the 15-minute requirement triggered at this temperature for moderate or heavy work.
Memory Technique
95°F = 15-minute water breaks. Both numbers end in 5. At 95, you get a water break every 15. Easy pairing to memorize.
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