Smith Gardner Inc

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Facility Closure and Post-Closure

When a facility has reached capacity, Smith Gardner, Inc. has the expertise to design and implement a closure system that is effective for the short and long-term.  S+G personnel have provided closure design and Quality Assurance for over 170 acres of landfill.  S+G also provides post-closure care monitoring including cover inspections, and environmental monitoring. To enhance recovery and limit environmental degradation, S+G has also designed plans for mining of unlined landfills.

Our landfill closure innovations  include:

  • First membrane exposed cap;
  • First implementation of a “rain gutter” drainage system on a cap; and
  • First passive relief vent cap to allow landfill gas to vent passively rather than cause a cap failure if a LFG collection system fails.