A lot or building may be occupied by the following conditional uses:
(a) Day-care center.
(b) Drive-in facility for a financial institution.
(c) Drugstore, including the sale of a variety of goods, provided the total floor area shall not exceed 20,000 square feet.
(d) Filling station, provided no part of the operation, including drives and other ancillary spaces, shall be located within 100 feet of a R district boundary.
(e) Game room.
(f) Office, provided:
(1) No office use shall occupy more than 1,800 square feet of floor area;
(2) The floor area of all office uses within an area zoned CN-1 shall not exceed 15 percent of the total floor area within the district;
(3) The location of a building for an office use shall be located as not to diminish convenient access to retail and other businesses located on a lot or separate tract.
(g) Public utility and public use, subject to the requirements of Chapter 1135.
(h) Restaurant (including a drive-in restaurant).
(i) School, specialized private instruction.
(j) Service station with grocery sales with or without a drive-thru or pick-up window showing specific site plans for the proposed use. The determination by the Board to permit such use shall specify that the setback from adjacent R districts shall not be less than 100 feet unless the Board finds that a lesser setback requirement together with such fencing, landscape, and land use, as shall be required by such Board, will provide the necessary protection and screening to adjacent R districts. In no event, however, shall such setback be less than fifty (50) feet from any lot in an R district and it shall apply to the principal structure and any portion of the property used in conjunction with the principal use. In its findings, the Board shall require an appropriate agreement for maintenance of any landscaping and/or fencing required by the Board.