Try www.spayusa.org/ for help with low cost spay neuter vets who might be
willing to work with you. Try www.petfinder.com/ to see if there are any
specific shelters in your area. Get on the phone and see if they do TNR or
know of anyone who does. Your friend is gonna have to at least commit to
feeding the colony and trapping the animals at the bare minimum, even if
some help is provided with transport and medical. Otherwise, the best
option is to call animal control to come and pick the animals up and have
them euthanized.