Yep, we've been through this discussion where I work just a few days ago and one way hashing even with salt is _not_ compliant as you can search for whatever you hashed and get a hit (SSNs, emails etc).
What about symmetric encrypting the field(s) and then giving the customer the key, and tell them to print it or store it safely, or else they won't be able to recover? And then don't store the key or write it to disk (remove it from memory)