n, the Department may order and the permittee shall install temporary erosion control devices to protect the persons and property near such project. In addition, the Board of Public Works may direct the permittee to comply with the provisions of LAMC Section 61.02. (Amended by Ord. No. 185,587, Eff. 7/16/18.) All hillside property owners or their agents shall submit erosion control plans to their district grading inspectors prior to October 1 for grading projects within unfinished grading work in excess of 200 cubic yards (153 m 3 ) and sites with substandard conditions, unless specifically exempted by the grading inspectors. 91.7007.2. Duration of Work. (Amended by Ord. No. 185,587, Eff. 7/16/18.) No person shall conduct any grading excavation or filling, including the export or import of earth material, between the hours of 6:00 p.m. and 7:00 a.m. on any day nor on Sunday at any time, except in emergencies as provided in LAMC Subsection 91.7005.4.