I venture to guess that starting with EPA will be smart. How you manage almost everything is now well regulated. Expect to discover that you will be exceedingly tightly controlled, likely needing a scrubber, maybe even a filter press to separate solids from disposable liquid wastes. You might also inquire of local authorities. They may not permit your operation. It's tough doing business these days.
Should you inquire of local authorities, don't tip your hand, suggesting that you already refine. Avoid bringing attention to yourself. Pose your questions as if you're just thinking out loud.
Don't assume that because you open a door, commercially, that business will come. It's hard getting customers in the refining business. Handling electronic scarp, on the other hand, is likely a whole different matter. You didn't make clear what your intention was.
Harold