Storm Water and Storm Sewer or Storm Drain

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1 Introduction Infrastructure is the basic physical and organizational structures needed for the operation of a society or enterprise (Online Compact Oxford English Dictionary) or the services and facilities necessary for an economy to function (Steven M. Sheffrin (2003)) . The term typically refers to the technical structures that support a society, such as roads, water supply, sewers, electrical grids, telecommunications, and so forth, and can be defined as "the physical components of interrelated systems providing commodities and services essential to enable, sustain, or enhance societal living conditions."(Fulmer, Jeffrey (2009).) Functionally, infrastructure facilitates the production of goods and services, and also the distribution of finished products to markets, as well as basic social services such as schools and hospitals; for example, roads enable the transport of raw materials to a factory (American Heritage Dictionary of the English) . 1.1 Infrastructures can be divided into HARD and SOFT infrastructure. Hard infrastructure is limited to capital assets that serve the function of conveyance or channelling of people, vehicles, fluids, energy, or information, and which take the form either of a network or of a critical node used by vehicles, or used for the transmission of electro-magnetic waves. Infrastructure systems include both the fixed assets, and the control systems and software required to operate, manage and monitor the systems, as well as any accessory buildings, plants, or vehicles that are an essential part of the system. Also included are fleets of vehicles operating according to schedules such as public transit buses and garbage collection, as well as basic energy or communications facilities that are not usually part of a physical network, such as oil refineries, radio, and television broadcasting facilities. Whereas soft

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