Thank you for the question.
I am not aware of a registry of that type. The community has been working together for many years and has identified a list of chemicals that are part of the federal contaminated sites inventory.
It is an obligation on the part of the custodians, the real property owners, to be aware of those hazards, those chemicals, and to consider if they may have been used at their sites. In the case of a potential or suspected contaminated site, this leads to making that information public on the inventory.
I think that's probably the most direct answer I can provide to that question.