To all above posters. It was not uncommon in Europe to have a section partitioned off from a non-jewish cemetery to be used solely for Jews. Mr Koch consulted with Rabbonim and aside from fencing off his area he also acquired the rights for a gate into the cemetery near his plot to be known as the Jewish gate and only Jewish funeral processions will go through it.
While myself and I am assuming most posters (we should all live long) would not want such a resting place, before people say that he is being buried in contradiction to Halacha at least check with a Rabbi for clarification if what he did was okay(It actually may be kosher).
Regarding temple emanuel for the services and many of his liberal policies (including an even if Halachichally kosher definitely not normative burial): A Jew who grew up in early – mid 1900s America without true formal education is a true tinok shenishbar you cannot judge him because of that.Aside from lack of knowledge there was also a constant undercurrent of bashing orthodoxy as something for the old world.
May he be Zoche to find a resting place in Gan Eden