The DA should have been scrutinised by the committee before the approval stage.
Traffic, overshadowing, issues in the geotechnical report, a dilapidation report to cover any damage including possible subsidence from the excavation if it is not supported sufficiently etc etc.
Water flows above and below ground can affect your property and should have been addressed.
Sewer access etc should all be there.
All you can do now is ensure compliance in a polite manner!