(a) Permanently fixed artificial light sources shall be installed to provide at least 20-foot candles (215 lux) of light on all food preparation surfaces and at warewashing work levels.
(b) Permanently fixed artificial light sources shall be installed to provide, at a distance of 30 inches from the floor:
(1) at least 20-foot candles (215 lux) of light in sales areas, utensils and equipment storage areas, and in handwashing and toilet areas; and
(2) at least 10-foot candles (108 lux) of light in walk-in refrigeration units, dry food storage areas and in all other areas.