| rowspan="4" style="text-align: center;"| Excavation and <br> Mass Grading ||Clearing and Grubbing|| style="text-align: center;" | x || style="text-align: center;" | x || style="text-align: center;" | x | | rowspan="4" style="text-align: center;"| Excavation and <br> Mass Grading ||Clearing and Grubbing|| style="text-align: center;" | x || style="text-align: center;" | x || style="text-align: center;" | x |