Correct Answer - Option 3 : 15 years
Explanation:
(i) The post-closure care of landfill site shall be conducted after fifteen years and long term monitoring to assess:
- Maintaining integrity and effectiveness of final cover and repair required.
- Efficiency of leachate collection system.
- Ground water quality and action required to improve.
- Maintenance and operation of gas collection system to meet the standards.
(ii) The closed landfill may be used for human settlement after 15 years of postclosure care by ensuring gaseous emission and leachate compliance.
