EACH YEAR the EPA and the regulated community expend a significant amount of resources collecting waste management data for research, regulatory decision making, and regulatory compliance. While these investigations are required for accurate decision making and effective environmental protection, it is the goal of EPA and the regulated community to optimize these studies by eliminating unneeded, duplicative, or overly precise data [1,2]. At the same time, however, the data collected must be of sufficient quantity and quality to meet the objectives of the study.