Sabiñánigo (Inquinosa lindane, Bailín and Sardas landfills)

Every tonne of lindane leaves 8 to 12 tonnes of other hexachlorocyclohexane isomers with no commercial value. Inquinosa generated, depending on the source, between 115,000 tonnes and 177,000 m³: about 6,800 tonnes a year of solid residue and 300 to 500 of liquid residue. They went to the Sardas and Bailín landfills, onto the factory site itself and to other scattered spots.

Under the landfills a dense non-aqueous phase liquid (DNAPL) has formed, made of HCH isomers, benzene, chlorobenzenes and chlorophenols, which sinks into the fractured rock and contaminates the aquifers. A sandstone layer connects the old Bailín landfill to the Gállego river; the contaminants build up in the sludge of the Sabiñánigo reservoir and in fish.

In 2003 the Huesca provincial court ordered Inquinosa to pay for the environmental damage. In 2013 the LindaNO citizens' movement was formed.