Spray Area
Don't have the IFC with me right now but here is what NFPA 33 permits in the booth:
Chapter 8 Storage, Handling, and Distribution of Flammable and Combustible Liquids
8.2 Storage in Process Areas
8.2.1 There shall be not more than three approved flammable liquid storage cabinets in any single process area without the approval of the authority having jurisdiction. Storage cabinets shall be listed or shall be designed and constructed to meet the requirements of NFPA 30. Any single cabinet shall contain not more than 454 L (120 gal) of Class I, Class II, or Class IIIA liquids, of which not more than 227 L (60 gal) shall be Class I and Class II liquids.
8.2.2 The quantity of liquid located in the vicinity of spraying operations, but outside of a storage cabinet; an inside storage room; a cut-off room or attached building; or other specific process area that is cut off by at least a 2-hour fire-rated separation from the spraying operations, shall not exceed the quantity given in either (1) or (2), whichever is greater:
(1) A supply for one day
(2) 95 L (25 gal) of Class IA liquids in containers, plus 454 L (120 gal) of Class IB, Class IC, Class II, or Class III liquids in containers, plus 2 portable tanks each not exceeding 2500 L (660 gal) of Class IB, Class IC, Class II, or Class IIIA liquids, plus 20 portable tanks each not exceeding 2500 L (660 gal) of Class IIIB liquids
8.2.3 The quantity of flammable and combustible liquids located in a spray area or in a mixing room adjacent to a spray area shall meet the requirements of Section 8.3.