Maryland Code, Environment § 9-242

(1) Keep records, including daily records of the source and amount of sewage sludge for each truckload delivered to the site;

(2) Make reports, including reports of sewage sludge analysis, as often as necessary to assure that the sewage sludge meets permit requirements;

(3) Have a copy of the report of sewage sludge analysis that is required under item (2) of this section available on the vehicle transporting the sewage sludge while the sewage sludge is being transported in the State;

(4) Install, calibrate, use, and maintain monitoring equipment or methods, including biological monitoring methods and well monitoring, if appropriate;

(5) Take samples in accordance with the methods, at the locations, at the intervals, and in the manner that the Department requires; and

(6) Give to a representative of the Department or the local health official any information that the Department reasonably requires.