[en] This report considers three different empirical methods for estimating the rock mass condition and support requirements for the Hanford Site. The three methods employed are (1) rock structure rating model, (2) rock mass rating, and (3) Q system. The site specific conditions at the Hanford Site are used to estimate the support requirements for an underground high-level waste repository in basalt. The suitability of each method is considered by comparing the case history site conditions from each empirical method with the conditions at the Hanford Site. The generalized support system recommended by the empirical methods for the Hanford Site is evaluated using a rock support interaction analysis. 39 refs., 19 figs., 13 tabs