Petition by appellant (Dept, of Environment, Health and Natural Resources) for discretionary review pursuant to G.S. 7A-31 allowed 27 January 1994. Petition by appellant (Vulcan Materials Company) for discretionary review pursuant to G.S. 7A-31 allowed 27 January 1994 as to issues 1,2,3,4, and 5 as stated on pages 16 and 17 of it's petition and is denied as to issues 6 through 12 on pages 17 and 18 of its petition.