The purposes of these regulations are to promote the public health, safety, general welfare and to provide for:
A. The harmonious development of the city;
B. The coordination of streets, alleys and easements in new subdivisions with existing and future development and improvements;
C. Adequate park and open spaces for travel, light, fresh air and recreation;
D. Adequate transportation, water, sanitary drainage, irrigation and other public services and facilities;
E. Economical development and extension of public facilities and services to meet the demands of growth;
F. An orderly and efficient procedure for submission and disposal of requests for approval of subdivision plats;
G. The delegation of authority for administrating these regulations.