I seem to recall that they would take old ships, fill them with rocks and sink them as seawalls. (One man’s trash is another man’s treasure). I hope they can excavate it and study it quickly so it doesn’t delay the builder too much.
San Francisco from Montgomery Street to today’s waterfront is all landfill — most of it on top of abandoned ships. Ships arrived in the 1850s and everybody took off for the gold fields. There were no crews left for the return-trip.
Imagine the builders face when he got the call....and the language.........