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Typical Landfill Gas
                                              Monitoring Probe


      Protective Surface Casing



                                                                    Sampling Valve

                          Concrete Pad




                   Soil

                                                                                        Soil
                                  Seal




                                                                            Gravel




                                  Cap
                                                                   Monitoring Probe Depth Varies.
(Not to scale)

           Gas monitoring probes are used to enhance environmental protection at landfills. Gas
           concentrations are measured at permit or regulatory specified time intervals. This process
           allows potential environmental concerns to be identified early, evaluated and corrected
           (when necessary) in accordance with regulations and sound scientific approaches.




                                            www.wm.com
©2003, Waste Management

      From everyday collection to environmental protection, Think Green. Think Waste Management.
                                                                             SM

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waste management Gas_Probe

  • 1. Typical Landfill Gas Monitoring Probe Protective Surface Casing Sampling Valve Concrete Pad Soil Soil Seal Gravel Cap Monitoring Probe Depth Varies. (Not to scale) Gas monitoring probes are used to enhance environmental protection at landfills. Gas concentrations are measured at permit or regulatory specified time intervals. This process allows potential environmental concerns to be identified early, evaluated and corrected (when necessary) in accordance with regulations and sound scientific approaches. www.wm.com ©2003, Waste Management From everyday collection to environmental protection, Think Green. Think Waste Management. SM