Your company has won the job constructing a PRB for theremediation of a TCE groundwater…

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Your company has won the job constructing a PRB for theremediation of a TCE groundwater contamination problem. Thewater to be treated contains 94 mg/l TCE. The remediation goal is tohave less than 2 ug/l Vinyl Chloride in the effluent from the PRB. Your assignment is to figure out how thick the PRB wall has to be inorder to achieve that level of treatment, i.e. what is the minimumresidence time of the contaminated water within the PRB? UseEXCEL!!Assume: first order reaction kinetics (…think radioactive decay!)where the half-life for TCE, DCE, and VC degradation is 4 hr, 5 hr,and 10 hr, respectively. The groundwater flow velocity is 1.1 m/d.

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