From the Aspen Daily News:
The Institute, which postponed a scheduled hearing before Aspen City Council this week to work on its plan, has to bring something to the city before a Nov. 23 meeting. The Institute was caught off guard by the size of the fee, which assesses $2.88 per square foot of impervious surface area, which includes paved areas and most roofs. However, the fee isn’t just for new construction. If an addition larger than 500 square feet is built onto an existing building, then the fee applied to all the impervious area associated with the building. About 55 percent of the tab was for a project adding about 1,000 square feet of impervious area (600 square feet of built space) to the Paepcke Auditorium building. The rest is for a project installing a rock and dirt ground covering for the 21,000-square-foot Greenwald Pavilion tent. “Very few people realize the magnitude” of the stormwater fee, Institute planning consultant Jim Curtis said.
More stormwater coverage here.