OCR Text |
Show Figure 19- 5 AREAS OF DIFFERING SUSCEPTIBILITY FOR CONTAMINATION OF WATER FOR SALT LAKE VALLEY PRINCIPAL AQUIFER Greatest Great Intermediate Least Unconfined recharge area, rapid ground- water velocity Unconfined recharge area, groundwater velocity 1/ 10 that in area 1 Clay layer overlies principal aquifer, downward hydraulic gradient Clay layer overlies principal aquifer, upward hydraulic gradient Area in which susceptibility increases from least ( area 4) to intermediate ( area 3) Vitro tailings & groundwater contamination Kennecott mineral tailings Sc groundwater contamination 0 12 3 4 KILOMETERS 19- 8 |