Abstract
This article briefly reviews methodological issues relevant to subsurface testing and advances a general method for objectively assessing the reliability of an archaeological survey program based on subsurface survey methods such as the excavation of shovel tests or the use of auger holes. The proposed technique employs simulation to model subsurface testing strategies using simple principles of probability and assumptions that are explicit and realistic. An arbitrary layout of test units can be evaluated to yield an estimate of the proportions of sites of different sizes and artifact densities that will be found (or missed) by the testing program.