During the Final Wars, biochemical weapons were employed in vast amounts. Massive bio-damage was inflicted on cities and military areas rendering many of the buildings and public areas uninhabitable. Relocations saved millions, but after the war, people found they were unable to return to their lives. Toxins and unforeseeable chemical reactions littered the city areas causing anything from shallow breathing to skin irritations to even incurable diseases.
Repopulating the cities would require detoxification, clean-up (of bodies and remaining debris), demolition, reconstruction, rewiring of city services to include natural energy conduits, and convincing profiles and communities of the safety of returning. The costs involved were often too steep.
Therefore, a new form of city reconstruction was developed as a three-phase plan.
Phase One: Superstructure Construction
The first phase involved building an entirely new city less than a mile above the existing city. The new city would be a reinforced superstructure composed of high-tech steel alloys and disturbance distribution networks. The new superstructure would be modeled after the city below in physical layout and design, but would be completely new and advanced.
Phase Two: Lower City Refurbishment
The second phase, planned to occur several years after the first phase completes, will begin to detoxify the remaining bio-damage from the lower city. By the time the second phase begins, toxic levels and effects will be drastically reduced over time, resulting in lower clean-up costs.
Phase Three: Integration
The final phase will involve connecting the two cities via terminals and direct transit. With the expected increase in population that the superstructure will bring, the space and environment of the old city will hopefully be a welcome addition.
Currently, there are only two cities that have adopted the three-phase reconstruction plan; Crystal City in Virginia, USA, and Earth City? in Tokyo, Japan. Crystal City is currently on phase two while Earch City has completed phase one.