The report describes the second year's work for EPA by Battelle's Columbus Laboratories on an environmental assessment of coal cleaning processes. Program activities included systems studies, data acquisition, and general program support. (1) Systems studies have been directed at: updating, refining, and developing new data on the technology of coal cleaning; summarizing previous efforts on the study of pollution control technology; continuing the development of environmental assessment criteria for pollutants associated with coal cleaning processes; and planing for pollution control trade-off studies. (2) Data acquisition included: selecting test sites and arranging for testing; selecting and documenting preferred procedures for sampling and analysis; designing the overall source test program; and preparing the specific test plan for the first category of sites to be tested. Ten test site categories were established and prioritized, and candidate sites were narrowed to 47. (3) General program support included: evaluation of environmental tests at the Homer City coal cleaning plant site and modification of a computer program for simulating performance of this and other coal cleaning plants; operation of the Coal Cleaning Information Center; an exchange of environmental information with the USSR; evaluation of coal cleaning to control SO2 emissions; and coordinating a symposium.

"EPA-600/7-79-073g." "December 1979." Includes bibliographical references. Prepared by Battelle Columbus Laboratories under the sponsorship of EPA, Office of Research and Development