Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 12 · column 5 of 9 · from the scan, no model involved

Soil productivity. A method of rating soil according to expected crop yields under specified management practices.
Soil potential. An alternative to the soil productivity method. It indicates the relative quality of a soil for a particular use compared with other soils in a given locale.
The site assessment takes into account land use, distance to an urban area, distance to a sewer, size of the farm, and other factors. This part of the system is done solely by community officials such as the planning and zoning board, county supervisors and a developer representative.
LESA has been tested. To avoid costly mistakes, the SCS set up a pilot program in 12 counties in six states.
87.2%