Calculate the required water provision for a 10-person crew working 8 hours in 98°F weather under Cal/OSHA heat illness prevention requirements:
Correct Answer
A) 40 gallons
Cal/OSHA requires 1 quart (0.25 gallons) per worker per hour in high heat. 10 workers × 8 hours × 0.5 gallons (double ration for temps over 95°F) = 40 gallons.
Why This Is the Correct Answer
At temperatures above 95°F, Cal/OSHA requires increased water provision. Using 0.5 gallons per worker per hour in high heat conditions: 10 workers × 8 hours × 0.5 gallons = 40 gallons. This reflects the enhanced hydration requirement for extreme heat.
Why the Other Options Are Wrong
Option B: 20 gallons
20 gallons uses the standard rate of 0.25 gallons (1 quart) per worker per hour without accounting for the elevated temperature above 95°F, which requires a doubled water ration. This is the calculation for normal (below 95°F) conditions.
Option C: 30 gallons
30 gallons does not correspond to any recognized Cal/OSHA water provision calculation. It may result from using an intermediate rate of 0.375 gallons per worker per hour, which is not a defined standard.
Option D: 50 gallons
50 gallons overstates the requirement and does not match the 0.5 gallon per person per hour rate applied to a 10-person crew over 8 hours.
Memory Technique
Standard heat: 1 quart per person per hour. High heat (95°F+): double it to 2 quarts (0.5 gallon). For 10 people × 8 hours × 0.5 gallons = 40 gallons. Think 'double water above 95.'
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