Landfills in Maryland shall be subject to post-closure monitoring and maintenance by the permittee as specified in this regulation, for a period of time not less than 5 years after the complete installation of the landfill cap. This time period may be extended by the Department if significant maintenance situations occur at the landfill during the 5-year period after closure. Inspections. The closed landfill shall be inspected at least twice per year by the permit holder or the permit holder's authorized representative. The inspection shall include: Observation of the cover at the landfill; Notation of any drainage irregularities or signs of erosion of the cover; Notation of any surface expressions of leachate at the landfill; and Checking the status of the monitoring wells. Maintenance. Irregularities or problems noted during the inspections shall be corrected within 30 days of their observance unless otherwise directed by the Department. Reporting and Record Keeping. For permitted facilities the results of inspections shall be recorded and reported to the Department within 60 days of the inspection. For facilities not required to obtain a permit, the results of inspections shall be maintained for a period of 5 years following closure.