1/31/96 CCPT--soil polygons were not clipped to the correct study unit boundary. The soil polygons were re-clipped using the CCPT boundary from ALL58. Percentages of A,B,C,D type soils were re-calculated. 2/1/96 SANJ--The polygons coded for netcode = lus were reselected from the original SANJ LUS polygon coverage, which included the entire study unit. Percentages were re-calculated for all characteristics. Land use plot was re-done. 2/13/96 WILL--Information about WILL now is included. 3/6/96 CONN--Experimental plots derived from land use and SCGGAD added. 5/30/96 CONN--Information about CONN now is included. LUS polygons derived by National Synthesis using surficial geology coverage supplied by study unit.