Page 275 - Materials Chemistry, Second Edition

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246 Waste Management Practices: Municipal, Hazardous, and Industrial
Tasks
1. Determine the direction of groundwater flow and draw directional arrows.
2. Observe the data for groundwater quality in the site wells. Are there any constituents that
are in excess of MCLs (see Table 10.1, also the Code of Federal Regulations)?
3. Based on groundwater data, can you suggest possible plots and waste types that may be
contributing to the highest contaminant data?
4. Do you observe any correlation between concentrations of any of the contaminants in
groundwater?
5. In the groundwater, does the EC correlate with data for any elements or compounds?
6. As mentioned above, MSW2 contained relatively higher concentrations of metals com-
pared with other feedstocks. Why were these metals detected only in very small amounts
in the soil or groundwater?
7. If we were to assume that the soils were similar from both sites, which compost feed-
stock results in the lowest NO concentrations in groundwater? The highest concentra-
3
tions?
8. From the data, what is the general relationship between soil data for NO 3 and ground-

water data for NO ? For NH ? For metals?
3
4
9. This study was not a strictly scientific one; however, conduct an Analysis of Variance on
soil data and determine whether any of the treatments is significantly different in terms
of NO 3 content, P, or K levels.
10. Conduct an ANOVA on groundwater data and determine whether any of the treatments
is significantly different in terms of NO 3 contamination of groundwater.
11. What corrective measures would you propose in order to control the excess leaching of
nutrients from any of these sites?