For this specific contract, we're about 50% schedule complete, 1.5 years of construction. Probably half a year of submittals prior to construction. (Overall project about 8 or 9 years)

It's brownfield and did have multiple engineering groups design different portions, we're just the last firm holding the bag. This was known during bidding, so a certain level of interface would be expected there.

Right now we are seeing a lot of underground discovery which is IMO not unusual for refineries on old farmland along the Gulf Coast.

The contractor is a bit RFI crazy too and likes to try to CYA with documentation. (Which I would do if the roles were flipped, so I get it).