Approved Deicers

Hi Sam, I've been looking at deicers appropriate for this credit. After some chemicals were removed from the environmentally friendly list in the reference guide via the July addenda, I see calcium magnesium acetate (CMA) is the only one left. I've read CMA has a few downsides, but certainly not as bad as the salts/chlorides. I've looked into some other products containing the following ingredients: Urea (Carbonyldiamide), Propylene Glycol, and Amides. Are you aware of any problems with these chemicals? We are looking to use sand or something else for traction on ice, but it's not mentioned in the reference guide. Not sure if LEED has a stance on that as well? Thanks, Stephanie