If you want to stay on top of new regulatory developments by EPA or other state agencies, there is a very cost-effective way to do it. It is FREE!
For EPA, go to its list servers at this link and sign up.
For California EPA, go to this link and sign up.
Go to other state agencies’ websites and see if they have their own list servers for you to sign up.
Once you have signed up, you will get email from the agencies updating you on what is going on.