It’s been a decade of growth for the Green Bay (Wis.) Water Utility. The economy may have curtailed that some, but even now, the utility maintains an aggressive program of rehabilitating water mains.Whether installing new lines or repairing old ones, the work usually gets done the old-fashioned way — by digging a trench. In recent years, though, the utility has used trenchless techniques at times. Sometimes it’s to avoid disturbing environmentally sensitive areas and the regulatory red tape involved with open digging in such places. Other times it’s because nature herself simply gets in the way.As a result, Green Bay
