EPA Lead Paint certified -- added costs for job?

[Bienes Raices]

I'm in kind of a bind and had to get a contractor who's not Lead Certified yet to provide an written estimate for mold remediation to the bank by a deadline at the very last minute (don't ask!). I was wondering if anyone has used EPA lead certfied contractors and has a rough idea of what % increase (over the normal cost of the job) they are tacking on due to the extra prep involved with the lead safe techniques? Thanks.