The entire floor area in a major repair garage without ventilation, up to a level of 18 inches above the floor, is considered a what location where Class I liquids, hydrogen, natural gas, or LPG are transferred?

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Multiple Choice

The entire floor area in a major repair garage without ventilation, up to a level of 18 inches above the floor, is considered a what location where Class I liquids, hydrogen, natural gas, or LPG are transferred?

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