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IN SITU FLOW METERS AROUND A GROUNDWATER CIRCULATION WELL (PAPER)
Citation:
Simon*, M A., T. Li, B. Hough, AND R. L. Johnson. IN SITU FLOW METERS AROUND A GROUNDWATER CIRCULATION WELL (PAPER). Sixth International In Situ and On-Site Bioremediation Symposium, San Diego, CA, 6/4-7/2001.
Description:
The primary benefit of groundwater circulation well (GCW) technology is the development of strong vertical flows surrounding the treatment well. The extent of significant vertical flow surrounding a circulation well is difficult to establish from traditional groundwater elevation measurements. In June 2000, in situ flow meters were buried in the aquifer around a GCW at Cape Canaveral Air Station, FL (CCAS), to mesure the magnitude and direction of the surrounding groundwater flow. This aquifer is contaminated with trichloroethylene and other halogenated volatile organic compounds. The HydroTechnics in situ flow sensors use a thermal perturbation technique to directly measure the direction and magnitude of groundwater flow in velocity ranges from 5x10(-^) to 1x10(-3) cm/s. The in situ flow meter measurements were collected under non-pumping, groundwater extraction, and groundwater circulation conditions. The magnitude and extent of vertical flow around a groundwater circulation well were greater than originally anticipated.