THE IMPORTANCE OF PROPERTY-OWNER INTERVIEWS IN SINKHOLE COLLAPSE REMEDIATION
One such case involved a seemingly minor 1 square meter collapse adjacent to a home in Pennsylvania's Cumberland Valley. The small collapse opened after an exceptionally wet period and was located 2 meters from a broken roof gutter seam. Excavation created a pit that slowly filled with water, which with sufficient head pressure, blew-out a soil pipe that drained the pit in seconds. Abandoning the gutter idea, a homeowner interview identified an abandoned in-ground pool, French drain, municipal water service break, abandoned septic system, and street maintenance as a series of seemingly unrelated items that were pieced together to reveal the cause.