The report describes an approach to the decision criteria needed to proceed from the initial emission screening analysis (Level 1) to the detailed emission characterization (Level 2), and a Level 2 analytical approach. The decision criteria, considering only the available Level 1 chemical data, provide a basis which can be used for proceeding to a Level 2 emission characterization based on chemical correlation with compounds identified as Multimedia Environmental Goals (MEGs). The report discusses the types of Level 1 environmental assessment samples, and the chemical data available which can be prioritized for a MEG-based Level 2 plan. It presents a logic network for determining the need for a Level 2 sampling effort. It also presents an integrated approach to Level 2 inorganic compound analysis, an identification scheme consisting of characterization of the initial sample, of bulk composition, and of individual particles. Detailed logic networks are included to provide direction to the analyst during the identification process. The analysis of solid and liquid samples for organic compounds is discussed, using mainly combined gas chromatography/mass spectrometry. A logic network is provided for the organic analyst.

"TRW, Inc., Defense and Space Systems Group." "February 1979." Includes bibliographical references. "Contract no. 68-02-2613, task no. 6, program element no. EHE623A."