Paperback. North Carolina, US Environmental Protection Agency, 1986, In four volumes (Volume I, 67 pages; Volume II, 61pages; Volume III, 209 pages + appendices; Volume IV 400 pages + appendices); Charts and diagrams throughout. Stamp on front cover of each volume: "Final Draft." Volumes I and II have small dampness stain on the bottom corner of spine; volumes III and IV have creases down the center of their spines. Spines of volumes II-III yellowed by sunlight. Interior clean. A nice, tight set.