The report often sits in the Project Manual as information available to bidders. It may say that it is not a contract document. Read that note.
Boring logs show soil type by depth, the groundwater level and any rock. An excavation sub uses them to judge digging, dewatering and haul-off.
Read the logs nearest your work. Read the recommendations for fill, compaction and foundations. Compare them with the earthwork spec section.
Borings sample only a few points. Conditions between them can differ. If rock or water is a risk, ask for a unit price or state a qualification.