The existing and proposed principal building or structure and all accessory buildings or structures, if any, and finished grade elevations at all corners of said buildings. The size, height, location, arrangement and use of all existing and proposed structures and signs shall also be indicated, including proposed total building coverage in acres or square footage and percent of the lot coverage, with an architect's scaled elevations of the front, side and rear of any structure, and a sign to be erected or modified to the extent necessary to apprise the Planning Board of the scope of the proposed work. Any existing structures on the site shall be identified either to remain or to be removed. There should also be a description of the proposed use, which would include the number of employees, number of shifts to be worked, any type of truck traffic, with particular emphasis on noise, glare, vibration, heat, odor, air and water pollution, safety hazards, outdoor storage of materials, any screening and anticipated expansion. Floor plans should be submitted where multiple-dwelling units or more than one use are proposed that have different parking standards.