The list appears to be of stuff EA has to eliminate to cover his tracks. He obviously knows to get rid of his black shirt. I think EA is smart enough to know they can track his spending through bank statements, so he needs to make sure they're all disposed of, but not smart enough to realize it makes no difference, since the bank has record of it all anyway. I also suspect he may have intentionally gotten rid of all these things & CM's stuff in a public dumpster in a random place. He may know enough to not put them in his own trash.
I just pray this isn't the case with CM herself. Even with cadaver dogs to search, too many cases where a loved one can never be brought home.
If he dumped it in a public trash, it'll likely never be found.