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Landfilling at Houghton Le Spring in Sunderland.

Here, a former limestone quarry was lined and used for landfill. The lining failed within a few years and leachate polluted the groundwater. Landfill leachate can contain nitrates, phosphates, dichloroethane, phenanathrene, zinc, copper, magnesium, sulphate, chloride, ammonia and ammoniacal nitrogen. Not your usual cup of tea.