Requirements. Business shall be performed for pecuniary gain in or directed from one or more residents of that dwelling unit and shall 1) not be inconsistent with the residential character of the dwelling unit and present no outside appearance of business use; 2) require no exterior modifications of a structural nature for operation; 3) exhibit no exterior sign or other indication of a business; 4) use no equipment or process that creates noise, vibration, glare, fumes, odors, or electrical or electronic interference including interference with radio or television reception detectable by neighbors; 5) not involve use, storage, or disposal of any grouping or classification of materials that the federal Secretary of Transportation or the state or local ordinance designates as hazardous material; and 6) and shall provide on-site parking for all employees, and no on-street parking by such employees shall be permitted.