Pages authored by Sally L. Letsinger:

1. Watershed Hydrology / Riparian Buffer Zones
   Most bodies of water, both running and standing, have a floodplain or transitional riparian area. These areas are called riparian buffers, and they are beneficial because they slow water runoff, trap sediment, and enhance infiltration.
2. Geology / Aquifer Sensitivity
   Recent drill-coreand seismic-reflectionstudies indicate that the Wisconsinage Lagro Formation (Wayne, 1963) that surfaces most of Allen County consists of two significantly different clay-rich deposits. Figure 1 is a schematic depiction of these two Lagro deposits overlying the Huntertown drift(Fleming, 1994), which serves as a regional aquifer.
3. Older Projects / Potential Contaminants in Soils at a Confined Feeding Operation
   Several Confined Feeding Operations (CFOs) are being operated in the sandy soils of southwestern Indiana.
4. Coal / Coal-Slurry Deposits
   Indiana has a long history of coal mining by both underground and surface methods, and the state is still a major producer of coal (34.5 million tons in 2005, Indiana Coal Council).