I do remember that very well: more than 10 years ago a multinational company was expanding their brownfield facility. A new multi-level production building was to be constructed adjacent to the existing one.
There were usual challenges, like missing documentation from the existing building, or non-available masterplan with the utility infrastructure. Client team also forgot about an HV cable of a third party on their land. And perhaps, the biggest challenge was the “free” piece of land itself.
The client was pretty sure that there is nothing to worry about. Decades ago there had been a boiler house nearby. The construction site was supposed to be free of any obstacles. All employees, including former ones, confirmed that, and the client did not want to spend money for additional surveys.
Well, when excavation started, the last thing anyone would expect was giant mazut tank. This dammed rusty thing was still full of mazut! Previous owner of the site did not exist anymore, so there was no one to blame. As you can imagine, construction was delayed.
How to avoid such situations?
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