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TECHNIQUES TO DETERMINE SPATIAL VARIATIONS IN HYDRAULIC CONDUCTIVITY OF SAND AND GRAVEL
Citation:
Hess, K. M. AND S. H. Wolf. TECHNIQUES TO DETERMINE SPATIAL VARIATIONS IN HYDRAULIC CONDUCTIVITY OF SAND AND GRAVEL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-91/006 (NTIS 92-109123), 1991.
Impact/Purpose:
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Description:
Methods for determining small-scale variations in aquifer properties were investigated for a sand and gravel aquifer on Cape Cod, Massachusetts. easurements of aquifer properties, in particular hydraulic conductivity, are needed for further investigations into the effects of aquifer heterogeneity on macro dispersion, or the enhanced dispersion of solutes in aquifers. The primary methods used to measure vertical profiles of hydraulic conductivity were multiple-port permeameter analysis of cores and impeller-flowmeter hydraulic tests in long-screened wells. ore than 1,600 hydraulic-conductivity measurements have been made using these methods. everal other methods of measuring aquifer properties also were investigated, including piezometer tests, geophysical borehole logs, and ground-penetrating radar.