Sound Transit Expertise on Sandy Voids? Priceless.

Tunnel expert Ben Rumson, once he's sobered up, can tell you a cautionary tale about tunneling beneath your town.

A few Beacon Hill inhabitants are still a little miffed about the seven (up to 21 feet) deep holes ST sprang on them.

Survey says: "Sound Transit has dug 67 different test bores across the Hill, some down to about 400 feet near the water tower at Volunteer Park. The results confirm the comparable geology--layers of clay and sand throughout most of the Hill."

Sound Transit spokesperson Bruce Gray says, "We are learning a lot, but every job is different."