“USGS map” means a map published by the United States Geological Survey at a scale of 1:24,000 or a scale that provides greater detail.

Source. (See Revision Notes #1, #2, #3, and #4 at Chapter heading for Env-Wt 100) #12801, eff 12-15-19; renumbered by #13945 (formerly Env-Wt 104.41)