Complex sentence: All units will be retired with the delivery of the remaining ALP-46A locomotive, except 4405 and 4409, which are assigned to ACES and SEPTA 2308,as of 6/15/11 4402,4403,4408,and 4410 have been leased by Amtrak for work train service through the Hudson river tunnels.
Split into simpler sentences: All units will be retired with the delivery of the remaining ALP-46A locomotive, except 4405 and 4409, which are assigned to ACES. As of June 15,2011, units 4402,4403,4408,and 4410 have been leased by Amtrak for work train service through the Hudson river tunnels.