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Typical Groundwater
                                                  Monitoring Well


                                                                      Protective
                           Sampling Cap                               Surface Casing

                                                                                       Protection
                                                                                             Post
                                                                     Weep Hole
                                                                                       Concrete Pad
                                      Seal




                     Soil
                                                                                      Soil



    Varies

                               Seal


                                                                                       Highest Seasonal
                                                                                      Groundwater Level




                                                                     Slotted Casing


                                                                                         Lowest Seasonal
                                                                                       Groundwater Level
                       Bottom Cap
                                                                           Gravel


                                                                    Monitoring Well Depth Varies.
(Not to scale)

 Typical groundwater monitoring wells are used to enhance environmental protection at landfills. WM has stringent
 standards, policies, and procedures in place to ensure that a high level of consistency and quality is built into each
 monitoring location. Samples are collected routinely at permit-specified time intervals, and analyzed by state
 approved and qualified independent laboratories. The lab results are evaluated and then sent to local or state
 regulatory agencies for review. This process allows potential environmental concerns to be identified early, and
 aggressively 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 Groundwater_Well

  • 1. Typical Groundwater Monitoring Well Protective Sampling Cap Surface Casing Protection Post Weep Hole Concrete Pad Seal Soil Soil Varies Seal Highest Seasonal Groundwater Level Slotted Casing Lowest Seasonal Groundwater Level Bottom Cap Gravel Monitoring Well Depth Varies. (Not to scale) Typical groundwater monitoring wells are used to enhance environmental protection at landfills. WM has stringent standards, policies, and procedures in place to ensure that a high level of consistency and quality is built into each monitoring location. Samples are collected routinely at permit-specified time intervals, and analyzed by state approved and qualified independent laboratories. The lab results are evaluated and then sent to local or state regulatory agencies for review. This process allows potential environmental concerns to be identified early, and aggressively 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