Annual Meeting of ESOP Shareholders

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WM Tontitown Landfill, LLC Assessment of
Corrective Measures Public Meeting
Tontitown, Arkansas December 16, 2003 600 PM
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A G E N D A

• INTRODUCTION Kevin Iler Landfill District
  Manager
• 2. PROJECT MONITORING James Dunbar Landfill
  Engineer
• 3. TECHNICAL PRESENTATION Mike
  Caldwell Hydrogeologist
• 4. CORRECTIVE MEASURES James Dunbar Landfill
  Engineer
• 5. DISCUSSION and QUESTIONS
• 6. ADJOURN (800 pm)

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INTRODUCTION

• Presented By Kevin Iler

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Kevin IlerWM Tontitown Landfill, LLCLandfill
District Manager

• More than 22 years of environmental and landfill
  related experience across North America and
  Europe
• Responsible for managing 2 landfill businesses
  and 2 transfer station businesses in Northwest
  Arkansas
• Local contact for the Tontitown landfill operation

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PROJECTMONITORING

• Presented By James Dunbar, P.E.

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James E. Dunbar, P.E.Waste Management of
Arkansas, Inc.Landfill Engineer

• More than 25 years of environmental and
  engineering experience
• Responsible for technical and environmental
  management of 5 landfills in Arkansas
• Registered Professional Engineer in Arkansas (and
  6 other states)

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Project Monitoring Details

• Site Tontitown Landfill, Arkansas
• Environmental Monitoring Points - 2003
• - 10 permanent groundwater wells
• - 16 permanent gas detection wells
• Environmental Management Points - 2003
• - An additional 18 groundwater sampling wells
  (4 located outside of the property boundary)
• - 37 in-waste gas collection wells
• - 38 out-of-waste migration control wells

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Project Monitoring History

• 1998 1999
• - 1st Qtr 10 GW wells 10 GW wells
• 17 Gas Detection points 13 Gas
  Detection points
• - 2nd Qtr 10 GW wells 11 GW wells
• 13 Gas Detection points 14 Gas
  Detection points
• - 3rd Qtr 12 GW wells 10 GW wells
• 14 Gas Detection points 12 Gas
  Detection points
• - 4th Qtr 11 GW wells 17 GW wells
• 13 Gas Detection points 12 Gas
  Detection points

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Project Monitoring History (continued)

• 2000 2001
• - 1st Qtr 10 GW wells 10 GW wells
• 44 Gas Detection points 37 Gas
  Detection points
• - 2nd Qtr 10 GW wells 29 GW wells
• 37 Gas Detection points 16 Gas
  Detection points
• - 3rd Qtr 14 GW wells 4 GW wells
• 17 Gas Detection points
• - 4th Qtr 10 GW wells 9 GW wells
• 37 Gas Detection points 17 Gas
  Detection points

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Project Monitoring History (continued)

• 2002 2003
• - 1st Qtr 5 GW wells 10 GW wells
• 20 Gas Detection points 20 Gas
  Detection points
• - 2nd Qtr 10 GW wells 17 GW wells
• 20 Gas Detection points 20 Gas
  Detection points
• - 3rd Qtr 67 GW wells 17 GW wells
• 20 Gas Detection points 20 Gas
  Detection points
• - 4th Qtr 23 GW wells 5 GW wells
• 20 Gas Detection points 20 Gas
  Detection points

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Project Monitoring History (summary)

• For the Period of 1998 through 2003.
• 338 individual groundwater monitoring samples
  have been taken from wells at the site
• Over 20,000 constituents have been analyzed for
  in the groundwater samples at the site
• 473 individual landfill gas detection points have
  been monitored

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Tontitown Landfill Site Map