Laboratory compaction test results for a plastic soil are given in the following table: a. Ya b. Ya c. Ya d. Ya Water Content (%) Test Method ASTM D698 = = 11.8 13.6 15.7 17.7 19.6 20.8 Dry Density (pcf) 100.2 102.8 105.3 106.4 103.7 100.8 115 pcf; w = 12.5 percent w= Test Method ASTM D1557 Dry Density (pcf) Specifications call for a fill dry density of 114 pcf and further require that the fill be com- pacted at optimum water content for the field compactive effort. For the following field density test results on a fill, explain how you would alter the field placement operation: 112.5 pcf; w = 13.5 percent 110 pcf; w = 14.5 percent 111 pcf; w= 17.3 percent Water Content (%) 12.0 13.6 14.8 16.1 17.2 116.2 117.6 117.9 116.5 113.6