Should radionuclides leak into the local aquifers, the scope and speed of potential contamination has to be assessed. The pressure of fluid within the aquifer was one of several variables used to determine the travel path and speed of travel for escaped radionuclides. Scallop data were collected during a 1990 survey cruise off the east coast of North America. Scallop counts were obtained using a dredge. Any scallop smaller than 70 mm was termed a prerecruit.
Total catch is the sum of prerecruits and recruits.
A truck transporting dioxin contaminated residues dumped an unknown quantity of these wastes onto a farm Road in Missouri. In order to reduce the number of samples required, samples were composited along transects. The transects run parallel to the highway, and this direction is designated as the X-direction. The direction perpendicular to the highway is designated as the Y-direction. Co-ordinates and transect length are given in feet.