Multi-criteria decision analysis (MCDA) is a social process and analytical framework that has been utilized since the late 1960s and widely applied in industries other than the remediation field.Given the complex features of remediation projects, MCDA holds the promise of providing considerable value to the remediation industry. However, its value has yet to be fully realized. This paper describes the potential benefits of MCDA to the environmental remediation industry, the factors that may limiting its use in this industry, and the MCDA process in general. The MCDA process description includes recommended practices for including stakeholder values and objectives and for performing stochastic MCDA. Lastly, the paper includes recommendations for enhancing stakeholder communications within the MCDA process.
TERMINOLOGYThere are many terms that are used interchangeably, or defined differently, by individuals working in the various fields associated with decision analysis. This is true of other frameworks that have developed adjacent to or in support of the remediation process, such as sustainable remediation and lifecycle analysis. For purposes of clarity, the definitions and meanings intended by this author for a number of MCDA terms are provided below. The terms are presented in logical order/chronological order as they might be considered by those entering into a decision analysis process.
Definition of decision"A decision is an irrevocable allocation of resources; irrevocable in the sense that is impossible or extremely costly to change back to the situation that existed before making the decision" (Howard, 1966, p. 55).This definition assumes that the decision is not merely a thought process, but an actual commitment to a course of action.