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hw_6_new - 1.34 WASTE CONTAINMENT AND SITE REMEDIATION...

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1.34 WASTE CONTAINMENT AND SITE REMEDIATION TECHNOLOGY HOMEWORK 6 – DUE APRIL 23, 2004 Question 1 Where does your trash go? That is, what is its eventual disposal point and how does it get there? (You can answer for either home or school, a one- or two-paragraph answer will suffice.) (2 points) Question 2 In Homework 4, we considered Acme Manufacturing, a metal fabrication plant contaminated by the chlorinated organic solvents trichloroethylene (TCE) and 1,1,1-trichloroethane (usually abbreviated 1,1,1-TCA or just TCA). You want to consider a treatment wall (permeable reactive barrier or PRB) as a treatment alternative for this site. What reactive medium would you select for a PRB in order to treat the ground-water contaminants at this site? (1 point) Laboratory column tests show that TCE has a half-life of 6 hours and TCA of 1 hour in the reactive medium you have selected. The tests also showed that the material has a porosity of 0.3 and hydraulic conductivity of 2 x 10 -2 cm/sec. Assume that the PRB will be installed in
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hw_6_new - 1.34 WASTE CONTAINMENT AND SITE REMEDIATION...

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