The document provides information on excavation costs for three different excavation jobs: 1) Excavation to reduce level involving a 10m2 x 1m deep trench costing RM71.28/m3. 2) Excavation of pits for pad foundations and column stumps of size 0.45m x 0.45m x 2.1m deep, costing RM70.36/m3. 3) Excavation of a trench for a ground beam of size 66m x 0.25m x 0.55m deep, costing RM15.08/m3.