Page 399 - Materials Chemistry, Second Edition

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370 Waste Management Practices: Municipal, Hazardous, and Industrial
TASKS
Using the monitoring well data from the tables, determine whether or not groundwater in the
landfill environs is contaminated. Indicate where contaminants are occurring and if they are in
excess of regulatory limits.
1. Determine the direction of groundwater flow and draw directional arrows.
2. From the contaminated wells identified, define the extent of any plume(s) and draw the
outline on the map.
3. Discuss any observable trends in migration of any contaminants over the study period.
4. Based on the behavior of the metals, what can you conclude about the pH of the leachate?
5. Do the data for chlorinated organics indicate a possible human health hazard? What
could be the possible source of these chemicals? Can any arise from natural decompo-
sition of disposed wastes?
6. Based on the need for additional landfill space and groundwater data, is an extension of
this landfill facility justifiable? Give reasons.