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Above checklists updated December 2, 2019This directory site includes a listing of Pennsylvania approved: Qualified people Certified firms DEP detailed screening company workers All DEP-listed Evaluating Firm Staff Members have an ID number in the 8000 collection DEP-listed mitigation company workers All DEP-listed Mitigation Firm Workers have an ID number in the 7000 series The coding summary for the different kinds of radon examination devices is listed here.
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