On file with the community development department of the city and made a part of this rezoning approval for concept description and delineation is the sketch plan document for the Three Fountains Commercial PUD. It is recognized, minor shifts or modifications to a sketch plan layout may be necessary and compatible with the need to acquire workable circulation patterns and usable building sites, but the sketch plan layout, including the relationship of uses to each other and the relationship of land use to the sketch plan framework, and development requirements shall be used as an implementation guide. (Ord. 1296, 4-6-1998)