ES162  Hydrology

	Read the excerpts copied from A Civil Action by Jonathan Harr, and answer the questions below.  A Civil Action follows the story of a law suit brought by leukemia victims against two Woburn corporations for contaminating municipal wells with TCE.  Do not read the rest of the book until you have handled in this assignment.  You can wait until the movie comes out this fall.

Section 1.  (pp. 325-333)
	If George Pinder corrected his estimate of arrival time from 12 months to 9 months, what was his estimate of porosity?  What do you think will be George Pinder's realization about the cause of the decline in depth of the Aberjona river?   What simple field data could be used to check Pinder's hypothesis?  (Extra Credit:  Where will Pinder have his realization?)

Section 2.  (pp. 353-357)
	How do you think Charlie Nesson will refute Guswa's calculations?  What possible explanations could Guswa use to defend the results of his calculations?

   	Assume the following.  The well is located 3000 feet downgradient of the 600'x 600' contaminated area.  The land surface is 49 feet above bedrock everywhere.  The water table at the well is 29 feet above bedrock.  The hydraulic gradient is aligned straight from the center of the contaminated area to the well, and is uniform throughout the region.  The hydraulic conductivity is 3.81 x 10-5 feet/second.  
	You can make the following conservative approximations.  Neglect recharge everywhere but in the contaminated aquifer.  Although the aquifer is unconfined, you may neglect this in your calculations of the water table elevation.