Who certifies lead based paint inspectors?

Looking to add another service to my suite of inspections. Lead based paint testing. It is my understanding that any new remodeling work being done on homes built before 1978 must have a lead based paint test done on it. Is this true?

Who certifies this? Is the the state, county or the EPA?
How do I go about getting this certification?
What is the typical charge for this inspection?

Thanks in advance guys/gals.

I looked in to this a little and from what I found it was the EPA. They have classes at the local Community College here according to the web site.

And the equipment cost about $20,000.00, or at least it used to

I have been thinking about this as well. I think it is the way to go if they start inforcing it. It opens the doors to a lot of inspections.