The franchise agreement also required the construction of two depots for the new rolling stock; the main depot was to be at Manchester, with a depot for stabling and maintenance at York. In addition, a depot at Cleethorpes was to be upgraded with refuelling and controlled emission toilet servicing facilities, and a train electric auxiliary supply. The franchise agreement specified a performance aim of 37,500 miles per casualty, with entry into service between March 2006 (first unit) and November 2006 (entire fleet).