The permittee shall notify the Department at least 48 hours before commencing any work in conjunction with the site development, the stormwater management plan, and upon completion of the project. Regular inspections shall be made and documented for each BMP and each ESD planning technique and practice at the stages of construction specified in the Maryland Design Manual and the Prince George's County Design Manual by the County, its authorized representatives, or certified by a professional engineer licensed in the State of Maryland. At a minimum, all ESD and other structural and nonstructural practices shall be inspected upon completion of final grading, the establishment of stabilization, and before issuance of a use and occupancy permit approval. Written reports shall include: The date and location of the inspection; Whether construction was in compliance with the approved final stormwater management plan; Any variations from the approved construction specifications; and Any violations that exist. The owner/permittee and on-site personnel shall be notified in writing when violations are observed. Written notification shall describe the nature of the violation and the required corrective action. No work shall proceed on the next phase of development until the Department inspects and approves the work previously completed and furnishes the permittee with the results of the inspection reports after completion of each required inspection.