Case story
Construction on I-99
USA, Pennsylvania
Many states are faced with the problem of dealing with tailings and residues from mining, road building, and other sources that pose a threat to groundwater. Residues can come from both old inventories of stockpiled material, as well as those materials recently excavated in order to provide roads and access to mining areas.
![](/media/43c27e89-b6b8-497d-9c95-3400c02726ab/liE07Q/TenCate%20Water%20and%20Environment/Images/Cases/Mining%20Mineral%20Processing/Pennsylvania-01.jpg?w=16&h=9&action=crop)
The leachate from these tailings produces an iron oxide material that can, if not monitored and controlled, flow into drinking water, streams, and rivers.
![](/media/87ce49c3-8019-46ee-acc5-27de08545226/EE_S7g/TenCate%20Water%20and%20Environment/Images/Cases/Mining%20Mineral%20Processing/Pennsylvania-02.jpg?w=16&h=9&action=crop)
![](/media/b0bbde2f-6214-4359-886c-2b4e613b08d7/7ZrUBw/PDF%20Thumbnails/CS%20Pennsylvania_tcm28-43598.pdf-thumb.png?mw=250&mh=300)