1. Design and Construction of Composite Lined Landfills
By Blackstone Environmental

2. Site Survey

3. Site Survey

4. Grading Plan Cell Boundary- survey, topo, as builts of adjacent cells
Existing liner tie-in
Match top of clay and top of rock elevations
Sumps or Gravity Drain of Contact water
Contact water removal plan for the site
Side slopes
Floor

5. Grading Plan

6. Grading Plan

7. AutoCAD 2014 Civil 3D Cut/fill volumes Stormwater calculations
DWGs for contractors

8. Typical Composite Liner Detail

9. Side Slopes Max 3:1 slopes on side walls
Anchor trench needed above slope to anchor liner down

10. Side Slopes

11. Anchor Trench

12. Sumps Collection and removal of contact water Risers and pumps
Gravity drained pipe system
Contact water can be put back into the landfill

13. Sumps

14. Sumps

15. Risers

16. Risers

17. Pump on wheels

18. Contact Water Removal Lines
Perforated HDPE or PVC pipe in sump
Non-perforated outside of cell
Pressure test for tightness
Measure and test contact water flow for use in post closure certification

19. Geomembrane HDPE QC by vendor QA by Blackstone
Seam verification testing every 500’
Seams are lab verified

20. Panel Diagram

21. Final Grading Plan

22. Final Grading

23. Final Design Construction Drawings
Professional survey (if applicable)
Existing Conditions
Proposed Site Layout
Proposed Grading Plan
Stormwater Management Plan
Typical Liner Details
Misc. Details
Proposed Final Cover Layout and Grading

24. Landfill Features

25. Geosynthetic Clay Liner (GCL)
Bentonite encased in fabric that expands when wet; permeability of < 1x10-9 cm/sec
Can replace up to 12” of compacted clay liner in Kansas
Polymer encapsulated GCL now developed for CCB landfills to reduce cation exchange capacity potential

26. Clay Placement on Subgrade

27. Underdrain Construction

28. Clay Liner tie in to adjacent cell

29. Storm Water diversion berm

30. Leachate Rock Spreading

31. Liner Termination Berm

32. Completed Leachate Pond

33. Riser Penetration through FML

34. FML Installation

35. Leachate Collection line penetration

36. Riser and Sump

37. Sump for Pump on rollers

38. Fusion Seaming

39. Air Test on Fusion Seam

40. Welding

41. Welding

42. Leachate Pond