Where, at the time of adoption of this Chapter lawful uses of land exist which would not be permitted by the regulations imposed by this Chapter, the uses may be continued so long as they remain otherwise lawful, provided:
(a) No nonconforming uses shall be enlarged or increased, nor extended to occupy a greater area of land than was occupied at the effective date of adoption or amendment of this Chapter;
(b) No such nonconforming uses shall be moved in whole or in part to any portion of the lot or parcel other than that occupied by those uses at the effective date of adoption or amendment of this Chapter;
(c) No additional structure not conforming to the requirements of this Chapter shall be created in connection with a nonconforming use of land.