SKB’s Rich Valley Demolition Landfill was the first lined C & D landfill in Minnesota. Liners protect the environment from potential pollutants. Rich Valley’s liner system exceeds Federal and State requirements.

Rich Valley’s liner system consists of a barrier layer and a drainage / protective layer. The bottom barrier layer consists of 2 feet of compacted clay. Clay is a highly impermeable material that prevents pollutants from entering the groundwater. Clay also displays self-mending properties that ensure protection from puncture. The drainage / protective layer consists of a 2-foot protective sand layer overlain a 1-foot drainage sand layer. All leachate is collected, tested, and properly disposed of in an approved facility.

Photo of heavy equipment working at the Rich Valley landfill

SKB also conducts groundwater monitoring to test water quality. These tests provide a method to constantly monitor the ground water entering the facility and its quality leaving the facility, thus providing needed information as to whether a liner system is performing properly.

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