Industrial Landfill Closure

Roux was retained by the property owner, a multi-national chemical company, to develop a cost-effective alternative landfill cover and leachate treatment design. The multi-phase project was designed by Roux in 1998, with the CTWs constructed in 1999 for pH neutralization and metal removal, since the Site’s landfill leachate contained high levels of zinc, iron, and acidity. The Phyto Cap, consisting of 18,500 specialty tree species, was installed in 2001. The solution is passively operated and has the capacity to treat combined leachate and stormwater runoff flows of up to 150,000 gallons/day.

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