Question

In: Civil Engineering

single choice Select the incorrect statement about phased approach for the site characterization A.   A fixed...

single choice

Select the incorrect statement about phased approach for the site characterization

A.   A fixed work plan must be strictly followed in the phased approach.

B.   The on-site interpretation of obtained data can be conducted in the phased approach.

C.   A fixed offsite laboratory is needed for the chemical analysis on the collected samples

D.   Compared with phase I, same sampling strategy, field investigation method and analytical methods are adopted in phase II and subsequent phases.

Which of the following issues may take place in the leachate collection system.

A.   Freezing induced cracks

B.   Reduction of hydraulic conductivity.

C.   Stress cracking

D.   Swelling induced by the hydration process

Solutions

Expert Solution

Q. 1 Option B is an incorrect option. As in phased approach on site interpretation of data cannot be done. Data is first to be collected then analysed and then interpreted. All other options are correct.   A fixed work plan must be strictly followed in the phased approach.A fixed offsite laboratory is needed for the chemical analysis on the collected samples. Stratergy adopted in all phases is same.

Q. 2 Which of the following issues may take place in the leachate collection system?

Option B is correct. Main ptoblem that came into picture is the clogging of the leachate collection system due to mud and silt which in turn will decrease hydraulic conductivity of the leachate collection system. Option A is incorrect as freezing induced cracks cannot occur in leachate being high temperature process. Stress cracking occurs in landfill liner which is a impermeable layer laid below the landfill to avoid contamination.


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