The Ridgefield Planning and Zoning Commission opened a public hearing last night on a proposed age-restricted affordable housing development off Danbury Road.  Charter Group Partners has proposed apartment-style one-and-two bedroom condominiums for people 55 and older.  9 of the 30 units would be considered affordable under the state's 8-30g law, allowing some zoning rules to be bypassed.  The proposed site is next to Ridgefield's senior center, but also near wetlands.