1. Scientific or Engineered Landfilling of Waste
Minimizing waste reaching landfills.
Place the waste in new landfills in a manner that it does not harm the nearby environment.
Adopt rehabilitation measures at old waste dumps to minimize or eliminate their harmful impact on environment.

3. IMPACT ON ENVIRONMENT Source:
(a) Solids in the waste, (b) liquids in the pore space of waste, (c) gases in the pore space of waste
Pathways:
precipitation, infiltration, seepage, (b) surface run off, (c) ground water flow, (d) wind, (e) drains and streams, (f) rodents and pests, (g) vegetative growth on waste
Receptors:
(a) Adjoining areas, (b) people, (c) animals, (d) vegetation, (e) built and protected habitat

5. Proposed New Waste

6. Waste

7. Waste

8. Waste

9. Waste

10. V V V
Waste V V

11. Old Waste

12. Old Waste

13. V V V
Old Waste V

14. To reduce the environmental impact we should ISOLATE or CONTAIN the waste in an IMPERMEABLE BARRIER

16. OLD

18. COMPONENTS OF ENGINEERED LANDFILL
A Liner System at the base and sides of the landfill which prevents migration of leachate or gas to the surrounding soil.
A Leachate Collection Facility which collects and extracts leachate from within and from the base of the landfill and then treats the leachate.
A Gas Control Facility which collects and extracts gas from within and from the top of the landfill and then treats it or uses it for energy recovery.
A Final Cover System which prevents migration of gas to the atmosphere, enhances surface drainage, interprets infiltrating water and supports surface vegetation.

19. COMPONENTS OF ENGINEERED LANDFILL
A Surface Water Drainage System which collects and removes all surface runoff from the landfill site.
An Environmental Monitoring System which periodically collects and analyses leachate, air, surface water, soil-gas and groundwater samples around the landfill site.
A Closure and Post Closure Plan which lists the steps that must be taken to close and secure a landfill site once the filling operation has been completed and the activities for long term monitoring and maintenance of the completed landfill (typically 30 to 50 years)