IndianaMapMGPs produced gas for lighting, heating, and cooking from the 1850's to the 1940's. In addition to producing the desired product, gas, numerous toxic by-products (such as tars and purifier wastes) were often stored in subsurface structures or disposed of in the dump areas at the site. Significant amounts of contamination usually occurred at these sites due to the nature of gas production and poor housekeeping. MGPs productions decreased and were phased out in the 1940's due to the increase network of natural gas pipelines across the country. These plants were decommissioned by razing the building but leaving subsurface structures and wastes in place. There are at least 74 known former MGPs in Indiana. This data set contains mainly the locations of access points to managed sites, along with a unique identifier for each location. In a few instances other features were used as a reference for the location of the managed sites.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/b71fbfce77464c8b97e1ce4746707d17_2420engIndianaMapPublicManufactured Gas Plants [Indiana]Web servicesIndianaLast Modified: 2024-12-18