Classification before action
A procedure that starts with instructions assumes the person already knows what they are dealing with. On an industrial floor that is rarely true at two in the morning. Classifying first, by substance and volume, gives the cleaner a decision they can actually make: is this on the known list at a volume I am equipped for, or is it not. Everything else follows from that single question.
The known list should be short and specific to the site: the products routinely used, the volumes typically spilled, and the equipment provided for each. Anything outside the list is treated as unknown regardless of appearance, because a substance that looks like water on a manufacturing floor may not be. That default protects the cleaner and removes the pressure to guess. Keeping the list on the wall of the cleaner's store, rather than in a document, is what makes it usable at the moment the decision has to be made.
