Typical Anatomy of a Landfill Please Note: This illustration depicts a cross section of the standard environmental protection technologies of modern landfills. While the tech-nologies used in most landfills are similar, the exact sequence and type of materials may differ from site to site depending on design, location, climate and underlying geology. 1 2 C OVER V EGETATION As portions of the landfill are completed, native grasses and shrubs are planted and the areas are maintained as open spaces. The vegetation is visually pleasing and prevents erosion of the underlying soils. Top Soil Helps to support and maintain the growth of vegetation by retaining moisture and providing nutrients. 3 P ROTECTIVE C OVER S OIL Protects the landfill cap system and provides additional moisture retention to help support the cover vegetation. Drainage Layer A layer of sand or gravel or a thick plastic mesh called a geonet drains excess precipi-tation from the protective cover soil to enhance stability and help prevent infiltra-tion of water through the landfill cap system. A geotextile fabric, similar in
This is the end of the preview.
access the rest of the document.
Landfill, leachate collection, Leachate Collection System