I'm getting ready to do some outdoor construction project this spring, where I will need to build some retaining walls. One project is basically a deck structure to provide a foundation for a shed. The other project is to build a vegetable garden bed out of pressure treated. I would think to avoid using the CCA stuff for the garden, but probably not an issue for the deck. So, has anyone used the ACQ lumber and determined if it is as stable, etc as the traditional CCA lumber.

Thanks
Bartman