. . "\"This document provides technical background on the assumptions, methodologies and data used by the U.S. Environmental Protection Agency (EPA) to develop Tier 1 and Tier 2 ground-water impact evaluation tools as part of the Agency's Guide for Industrial Waste Management ... The evaluation tools are combined in the Industrial Waste Management Evaluation Model (IWEM).\"--Executive summary."@en . . . . "Industrial Waste Management"@en . "Industrial Waste Management Evaluation Model (IWEM) technical background document"@en . . "Industrial Waste Management Evaluation Model technical background document"@en . . . . . . . . "United States. Environmental Protection Agency." . .