This lore can be found on Balmorra.
Republic: X:-720, Y:445
Empire: X:-717, Y:449
As a thriving center of industry, Balmorra has never been a pollution-free planet and has grappled with the problem of waste produced by its many factories for many years. Still, unlike many of the similarly industrial Hutt worlds, Balmorra and its corporations have continually sought ways to safely dispose of its waste and keep the planet habitable. For these reasons, facilities such as the Traken Waste Processing plant and the hazard vaults–a system of underground sealed storage facilities for toxic materials–were created. During the Imperial bombardment, however, many of these facilities were destroyed, releasing the toxic byproducts of Balmorran industry into the environment and destroying huge swathes of land.