Two pages - I thought by now someone would have posted something relevant! Not to insult anyone, but you're all missing the relevant points.
First, the EPA is getting a lot of resistance, even lawsuits and action from Congress, in opposition to the RRP rules. If you don't like them, NOW is the time to lend some support to the NAHB. The National Association of Home Builders has been leading the charge to overturn RRP.
Second, the RRP rules, and their enforcement, has very little to do with whether you used the right vacuum. Like the OSHA rules, enforcement is designed to be 'paperwork heavy.'
Regardless of how much you disturb the finish, you still need to be certified. You still need to test. You still need to provide the official booklet AND HAVE THE CUSTOMER SIGN FOR IT. The EPA enforcement is focused on the paperwork.
I had a conscientious contractor replace a few windows - no lead was found, or disturbed. Still, the required paperwork meant that his guy showed up with a binder of forms. Some I signed and he took; the rest, and the binder, I kept. FWIW, this binder included warranty information, our contract (2 page), and other materials not related to RRP.
As usual, the EPA has pilloried a few folks, wishing to make examples to inspire the rest of us. So far, their biggest action appears to have been against a 'flipper' and the day-labor crew he had.