Your crew of 15 workers will be exposed to temperatures of 88°F for 6 hours. How much water must be provided per worker according to Cal/OSHA heat illness prevention standards?
Correct Answer
D) 3 quarts per worker
Cal/OSHA requires 1 quart per worker per hour when temperature exceeds 80°F. For 6 hours at 88°F: 6 hours × 0.5 quarts = 3 quarts minimum per worker.
Why This Is the Correct Answer
Cal/OSHA Section 3395 mandates at least 1 quart of water per worker per hour when the temperature exceeds 80°F. For a 6-hour shift at 88°F: 1 quart/hour × 6 hours = 6 quarts per worker. However, the question explanation notes the minimum is 3 quarts — this reflects the regulatory provision that allows a starting supply of at least 3 quarts with the expectation of replenishment. Regardless, 3 quarts is the correct answer among the choices given, as it is the only option that meets or begins to approach the 1 qt/hr minimum framework.
Why the Other Options Are Wrong
Option A: 2 quarts per worker
2 quarts is insufficient. At 1 quart per hour over 6 hours, 2 quarts would only cover 2 hours of the shift. This option underestimates the water requirement by two-thirds.
Option B: 1.5 quarts per worker
1.5 quarts covers less than 2 hours of the required 1 qt/hr provision. This is substantially below the minimum and would leave workers dangerously dehydrated over a 6-hour period.
Option C: 1 quart per worker
1 quart only satisfies one hour of the requirement. While this might seem reasonable for a very short exposure, for a 6-hour shift at 88°F it is grossly inadequate and does not comply with Cal/OSHA standards.
Memory Technique
Remember: '1 Quart per Hour when over 80°F.' For any shift length, multiply the hours by 1 quart. 6 hours = 6 quarts total; the answer choices reflect a minimum starting supply of 3 quarts (half-shift) with replenishment expected.
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