Question

Describe the compacted day layer (CCL) in terms of(1) its function, (2) materials required to construct CCL, (3) requirements (including the hydraulic conductivity and soil compaction in the field) according to Ontario Landfill Standard, and (4) the potential issues associated with CCL. (

Answer 1

CompactedThe covered tailings did not produce any drainage water during normal wetting or rain application because of the low hydraulic conductivity so this tailing is known as ccl.

1:-clay soil layer serves two distinct function.

First,this layer protects the underlying compacted soil liner from desiccation.

Second, constructed of coarse sand or gravel, this layer will serve as a drainage blanket and as a leachate removal system.

2:-materials or minerals required for the contruction of ccl are:-

unstable illites, montmorillonite and smectities etc.

3:-the range of 10 − 6 to 10− 8 cm/s is the minimum hydraulic conductivity (k) required for CCL.

4:-

poor drainage properties

evapotranspiration barrier.

gound water retarder.

surface cracking.