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Elimination of Positive Pressure Under a Landfill Cap Using Collector Piping in Boston, MA

Learn how to remediate positive pressure issues under a landfill cap, addressing problems like cap bubbling, elevated emissions, and odors by implementing a horizontal gas collector with flat, corrugated, or perforated pipe variations. Discover the benefits of panel pipes, filter fabric wrapping, and easy installation, ensuring a cost-effective and successful solution.

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Elimination of Positive Pressure Under a Landfill Cap Using Collector Piping in Boston, MA

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  1. Elimination of Positive Pressure Under a Landfill Cap Using Flat, Corrugated, Perforated Collector Piping Boston, MA Joseph P. Curro, PE, BCEEPrincipal Engineer

  2. Quantification of problem • Cap bubbling • Positive pressure under cap • Dead grass • Elevated surface emissions • Odors – high H2S gas • Cap material overlap – not sealed

  3. Remediation plan • Locate extent of problem • Determine best solution • Horizontal gas collector • Choose from collector types • Flat, corrugated, perforated pipe • Cap modification/repairs

  4. Flat, corrugated, perforated pipe • Panel pipe • Filter fabric wrapped • Supplied in a roll • Large width / contact surface • Structural strength • Ease of installation • No stone pack required

  5. Conclusions • Problem-free implementation • Speed of installation • Minimal disruption / odors • Thriving grass • Low surface methane emissions • Reasonable cost • Success!

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