On average, we conduct around a dozen flammable liquid safety audits each year and I can not think of an audit where we were not asked about the ventilation requirements in 1910.106(e)(3)(v)(a) and/or NFPA 30, 17.11.1-10. Both of these standards require an area where a Class I Flammable Liquid is being transferred or dispensed be ventilated at a rate of not less than 1 cubic foot per minute per square foot of solid floor area or a fancy way of saying it… 1 ft3/min/ft2 or in metrics 0.3 m3/min/m2