Eveningside Vineyards owner Randy Biehl stands in front of his new production facility in Cambria, NY by Bryan Calandrelli, Niagara Region Editor Randy Biehl doesn’t tend to wax romantic when he talks about his new production building – the construction of which is close to completion – at Eveningside Vineyards, the winery he owns on the Niagara Escarpment with his wife Karen. “I’m very aware we are in a critical time for our business,” he says.  “Expansion is when many businesses end up failing.” Knowing Biehl, you don’t chalk this up as simple boilerplate pessimism, but rather to his meticulous…