The conservation of energy and natural resources including water, air quality and open space has been determined to be a legitimate and worthy function of the City. The provisions of this chapter are intended to decrease dependence upon fossil fuels and other nonrenewable energy sources that contribute to the City’s greenhouse gas emissions by encouraging and, in some instances, requiring best management practices including the installation of devices, structures or materials for the efficient generation, distribution and use of energy and water on certain structures within the City. (Ord. 3145 § 1, 2009; Ord. 3135 § 1, 2009; Ord. 3119 § 1, 2008; Ord. 1973 § 1, 1982).