What type of differing is this example? 1920's building remodel. Would it be unusual to encounter asbestos even though contract documents are silent?
Dredging a waterway on a military base and uncover gas cylinders that explode, damaging equipment and structures. Is it unusual to encounter dangerous items on a military base?
a) Material differing
b) Site condition differing
c) Contract interpretation differing
d) Delay differing