Phase II reports are recommended (usually in the Phase I) when signs of contamination are suspected (known or unknown) on or around the property, on neighboring properties, or prior use on or about the site. The classic example are gas stations and dry cleaners. In several projects we have sold properties which were adjacent to or were former gas stations and the old tanks were removed without documentation. Even if the next door gas station has a clean certification and/or tanks were just replaced, contamination risk is sill possible and all of the experts recommend getting at least a Phase I report.