An Algoma man  is dead in the weekend explosion of a water tank at a Door County resort. It happened early Saturday morning at Harbour Village Resort and Campground in Egg Harbor. The Door County Sheriff’s Office says resort employees were flushing water lines as part of the park’s winterization project when the 3,000-gallon water tank exploded. First responders found the victim’s body outside a partially destroyed storage building. The victim was  identified as 27-year-old Sean C. Marquardt of Algoma