In credit SS4.3 it appears that the credit can be met by providing the required number of alternative fueling stations (3% of the total parking capacity of the site) , in this case electric recharging stations, for alternative fuel vehicles (electric vehicles). If the building owner does not know how many, if any, of his employees will use this alternative fuel vehicle, is the credit met by just providing the charging stations? If that is the case then do the parking spaces have to be dedicated to the alternative vehicle, thus adding to the total parking spaces for the site?