This Division I shall have as its purposes the establishment and enforcement of the following principles in the interest of protecting the health, safety and public welfare of the people of the city:
A. Effectuating the objectives established for the development of the city in the General Plan and the precise plans based thereon;
B. To provide for proper grading and erosion control including the prevention of sedimentation or damage to off-site properties;
C. Providing standards for the construction and installation of streets. roads, alleys, highways, public utilities and other public facilities;
D. Providing uniformity in street width, proper street alignment and adequate means of ingress and egress to property;
E. Preventing the subdivision of land which is subject to inundation or flash flooding or is otherwise unsuitable for subdivision.