Bank (Seller) requesting dye test for vacant lot with sewer???

[Mark Beekman]

I'm under contract for an REO residential lot that used to have a SFH on it. Apparently, the house was hit by a car and compromised its integrity so it was demolished. Right now I'm just looking To flip the land.

The property is 14,000 sq/ft with sewer & utilities at the street surrounded by very similar lots & houses in the neighborhood. No big surprises, I don't think, being that there was a house there not too long ago.

I was just contacted by the REO closing coordinator and he said that "a dye test is required for this property and it is the buyer's responsibility". There are no structures on this lot and even when there was it was serviced by public sewer at the street. Anyone have any suggestions on how to proceed?