The Danbury Environmental Impact Commission is reviewing a wetlands permit application from Curry Automotive to transform a storage yard near Danbury Municipal Airport into a Mercedes-Benz dealership.  A Danbury Public Health Inspector signed off on plans near the environmentally sensitive wetlands off Miry Brook and Sugar Hollow roads.  No direct discharges to wetlands are proposed.  Plans call for 230 parking spaces and 85 vehicles displayed on the second-story roof.  The FAA and Danbury's Planning and Zoning Commissions still need to approve the proposed special exception use and permit.  The Zoning Board of Appeals previously signed off on a variance.