RESPONDENT FAILED TO OBTAIN THE REQUIRED INITIAL CERTIFICATION FROM THE EPA; FAILED TO RETAIN ALL RECORDS NECESSARY TO DEMONSTRATE COMPIANCE WITH RESIDENTIAL PROPERTY REGULATIONS FOR A PERIOD OF 3 YEARS; FAILED TO DOCUMENT DELIVERY OF THE EPA-APPROVED LEAD HAZARD INFORMATION PAMPHLET; FAILED TO POST SIGNS CLEARLY DEFINING THE WORK AREA AND WARNING OCCUPANTS AND OTHERS NOT INVOLVED IN THE RENOVATION ACTIVITIES TO REMAIN OUTSIDE OF THE WORK AREA.