under EPA's SNAP reguirements for use of R12 substitutes?

Answer 1

http://www.epa.gov/ozone/title6/608/subrecsm.html


the regulation is listed here. You would need to contact your local State Department of Environmental Quality Air Division to see how they interpret it.

Sometimes, states are a bit more lenient on their enforcement than EPA would want them to be, unless you live in FL, TX, CA or some other activist state.

Hope this is what you are looking for.