The paper summarizes the Technical Resource Document (TRD) of the same title (EPA/600/2-84/040, March 1984). Although the TRD specifically addresses construction of hazardous waste disposal facilities in the United States, most information is universally applicable. The geotechnical parameters the permittee should test, observe, and document during construction, operation, and closure of a disposal facility are identified, as are: limitation of design properties tests; applicability of index properties tests; statistical analysis of sampling size, frequency, and distribution to support a quality assurance program; commonly used test methods and the criteria for their selection; and a quality assurance program for the permittee of a hazardous waste disposal facility.