Resources used based on encounter difficulty.

[Meudian]

I remember seeing something like this somewhere. Does anyone know, or have an idea, on where I can locate this information?

[Skylancer4]

It sounds like either the write up in wealth by level (which states that consumables will be used and not be included in the overall wealth of a character) or maybe the world building/GM'ing section where it goes over what a CR encounter is and what assumptions should be made when creating encounters, etc.

Not near my books, but off the top of my head those are where I'd look.

[Fetchystick]

Were you thinking of This document?

Basically an average encounter (CR = APL) should drain 25% of resources.