Below are the sources that we used in our mathematical models:
www.geocities.com/gksur/cont.html
www.sph.emory.edu/pehsa/water.htm
www.capital.edu/acad/as/csac/Comp_Env_Sci/GW/GW_module.htm
Below are the sources used for the data:
www.chem.northwestern.edu/%7Egeigerf/new_page/index.html