What is pollutant sorption?

Does sorption affect whether a pollutant will be a soil pollutant or not? How?

Know one example of a soil pollutant

For low to medium sorbing compounds, how is their transport in groundwater affected by sorption?

What is a NAPL? LNAPL? DNAPL?

Give an example of a LNAPL? How deep in the subsurface will it eventually reach?

What are two components of gasoline that will dissolve in water, create groundwater plumes and cause possible health effects?

Give an example of a DNAPL? How deep in the subsurface will it eventually reach?

Be able to calculate the gradient or slope of a water table between two wells.

Be able to calculate the transport time of a pollutant if given the porosity, hydraulic gradient, hydraulic conductivity (K) and retardation factor (R). You would be given the equations.

Be able to do the same through materials with differing hydraulic conductivities (example under Heterogeneity section of Groundwater Pollution notes)

What are expert witnesses?

What were the contaminants causing possible health effects in Woburn, Massachusetts?

What was the health effect seen in East Woburn?

What were the 2 companies sued and brought to trial for the Woburn case?

What do you think were the effects of separating the case into 2 separate trials (1^st trial on who caused contamination, 2^nd would have been on proving health effects but never came about)

Which one was found liable and for how much?

Two factors were important in the clearing of one company by the jury. Which company had eyewitness accounts of improper chemical disposal? Which one did not? Which company was on the same side of the river as Wells G and H? Which company was not?

What is a gaining stream? What is a losing stream? What type of stream was the Aberjona River without Wells G and H pumping? What type of stream was the Aberjona River with Wells G and H pumping?

Why was the expert witness not able to convince the jury that water would flow under the river into the Wells G and H?

Were health effects and their possible causes ever addressed in the trial?

What was the contaminant and its source in the Erin Brockovitch case (Hinkley, California)?

What is the difference between trivalent and hexavalent chromium?

Was there more than one possible source of contamination in the Hinkley case? How do you think this affected the handling of the case (as compared to Woburn)?

What is the primary scientific criticism of the HInkley case?

What has been observed in Fallon, Nevada recently? Is there an obvious cause for this?