Integrys Energy Group Inc.‘s natural gas fueling business unit, Trillium CNG, is building a high-volume compressed natural gas (CNG) fueling station in Kirkwood, NY, in the Southern Tier near the Pennsylvania border, primarily to meet the fleet fueling needs of Willow Run Foods Inc., a regional food service supplier. The facility is to be designed with ultra-fast refueling for heavy-duty trucks, including two dispensers initially and room for expansion as demand for CNG grows, the company said.