There exists in the city of Dallas, Texas, structures used for human habitation and nonresidential purposes that are substandard in structure and maintenance. Furthermore, inadequate provision for light and air, insufficient protection against fire, lack of proper heating, insanitary conditions, and overcrowding constitute a menace to the health, safety, morals, welfare, and reasonable comfort of the citizens of the city of Dallas. The existence of such conditions will create slum and blighted areas requiring large scale clearance, if not remedied. Furthermore, in the absence of corrective measures, such areas will experience a deterioration of social values, a curtailment of investment and tax revenue, and an impairment of economic values. The establishment and maintenance of minimum structural and environmental standards are essential to the prevention of blight and decay and the safeguarding of public health, safety, morals, and welfare. (Ord. Nos. 15198; 19234)