No part of any such use, including any building, automobile parking area, storage of materials, filling of land or any other building or activity including mining but excepting a railroad spur entering the property and access roads approved as herein provided, shall be established or conducted within a distance of 150 feet from an adjoining residential property line other than that known as Block 33, Lot 21, or within 100 feet from the nearest right-of-way line of any public road or highway serving residential traffic now maintained by public authority. Excavation shall not be conducted closer than 50 feet to the boundary of any zone where such operations are not permitted, either in White Township or an adjoining municipality, nor shall such excavation be conducted closer than 50 feet to the boundary of an adjoining nonresidential property line. Buildings and other structures may be constructed not less than 50 feet from an adjoining industrial tract. Excavation may be conducted within the limits prescribed above where deemed necessary by the Board in order to adjust the elevation thereof in conformity with the reclamation plan. Where berms of overburden or other material are constructed adjacent to residential property lines, they shall not be located within 50 feet of said residential property line.