I already told you and your team the solution before two weeks on weekly meeting, but your team not follow the instruction, now, i can repeat what can you do,
first, excavate the FOC Casing level to aviliable level(1.5m below road),
second, welding one or two steel pipe to existing pipe, extend to outside of road,
third, do pig test for steel casing, if pass,can backfill, if not pass, repair and recheck.
fourth, when HDD#33 completed, equipment remove from site, install the FOD and manhole.
I think you just inform DEMCO relocate or add manhole is ok, other work is IBCI's scope.