| 摘要 |
An apparatus and method to internally cut vertical slots inside PVC, HDPE , or plastic pipe-riser (blank casing) in existing methane gas recovery well s (extraction wells) that have been installed at Municipal Solid Waste Facil ities are described. Vertical slots cut in methane well risers allow methane gas, LFG derived from the decomposition of waste, to enter the existing ris er and extraction system. This process saves time and cost associated with d rilling additional wells to retrieve methane gas from subsequent layers of t he waste body. The process assists in maintaining regulatory compliance by c apturing LFG and preventing it from being emitted into the atmosphere.</SDOA B>
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