During this time period several systems to assess ground water pollution potential were being developed.
These Ground Water Pollution Potential maps have been developed by seven different initiating authors, including ODNR, several Ohio universities, and two private consulting firms (Weatherington-Rice 2003).
Creation of a DRASTIC Ground Water Pollution Potential Map requires that information be gathered and compiled for seven hydrogeologic, geologic, and soils parameters.
By 1995, the county scale Ground Water Pollution Potential map settings were being modified to acknowledge the hydrogeologic impact of fractures in Ohio's finer-grained glacial materials.
All 21 sites were evaluated for their DRASTIC settings and new Ground Water Pollution Potential numbers were assigned where necessary.
In 1987, the Ohio Department of Natural Resources (ODNR), Division of Water began a Ground Water Pollution Potential mapping program, on a county-by-county basis.
County Soil Surveys and ODNR county-based Ground Water Pollution Potential reports were collected.
Where those modifications produced a different DRASTIC Ground Water Pollution Potential (GWPP) index total, that new index is included.
A review of programs in Ohio identified a number of efforts currently in place that, if modified, could include ground water pollution potential mapping (DRASTIC) and the concept of fracture flow in guiding science-based land use decisions.
Fortunately, for all of Ohio, there is a program, the county based Ground Water Pollution Potential (GWPP) mapping effort, carried out by the Ohio Department of Natural Resources (ODNR) Division of Water (DOW) that has, since 1995, built an understanding of "fracture flow" in unlithified fine-grained materials into their county-based DRASTIC mapping program (Weatherington-Rice and others 2006).
That recognition was built into the recently published Ground Water Pollution Potential (DRASTIC) map for Williams County, Ohio (Angle and others 2003).
DRASTIC: a standardized system for evaluating ground water pollution potential
using hydrogeologic settings.