Timothy Grundl

Associate Dean of Freshwater Sciences; Professor
 Lapham Hall 346


PhD, Colorado School of Mines
MS, Northern Illinois University
BS, University Of Delaware

Research Interests

I am currently involved in multiple lines of inquiry. The first is a comprehensive look into the overall geochemistry of the deep sandstone aquifer in eastern Wisconsin and the upper Midwest in general. Although this aquifer is the preeminent source of groundwater within Wisconsin and Illinois it is over utilized and is coming under increasingly severe stress. The last of the Pleistocene ice advances injected a large pulse of fresh Pleistocene water into this aquifer and through the use of noble gas and stable isotope data we are in the process of unraveling the dynamics of this one-time event.

Another line of inquiry is a study of the shallow aquifer in southeastern Wisconsin to ascertain what effects would occur if treated effluent, complete with a high chloride load and a variety of emerging contaminants is used to recharge the aquifer either directly in an effort to reduce the effects of over pumping or indirectly by the use of riverbank infiltration. We are currently exploring several geochemical indicators to discriminate between recharge that contains treated effluent and recharge impacted by road salt.

A third line of inquiry is the development, in collaboration with other colleagues, of a suite of in-situ probes for the rapid, in-situ detection of contamination in submerged sediments. Our probes allow real-time identification of PAH and heavy metal contamination in sediments for a fraction of the effort involved in the typical coring and subsequent lab analysis that is in use today. These probes induce contaminant fluorescence using laser or x-ray excitation (for PAHs and metals respectively).

Teaching Areas

Chemical Hydrogeology, Contaminant Transport, Field Methods in Hydrogeology, Environmental Geology

Selected Publications