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Boston, MA

Elimination of Positive Pressure Under a Landfill Cap Using Flat, Corrugated, Perforated Collector Piping. Boston, MA. Joseph P. Curro, PE, BCEE Principal Engineer. Quantification of problem. Cap bubbling Positive pressure under cap Dead grass Elevated surface emissions

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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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