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OLS Field Name OLS Field Data
Main Title Large-Scale Natural Gradient Tracer Test in Sand and Gravel, Cape Cod, Massachusetts. 1. Experimental Design and Observed Tracer Movement.
Author LeBlanc, D. R. ; Garabedian, S. P. ; Hess, K. M. ; Felhar, L. W. ; Quadri, R. D. ;
CORP Author Geological Survey, Reston, VA. ;Massachusetts Inst. of Tech., Cambridge. Dept. of Civil Engineering.;Robert S. Kerr Environmental Research Lab., Ada, OK.;National Science Foundation, Washington, DC.
Publisher c1991
Year Published 1991
Report Number NSF-ECE83-11786 ;NSF-CES88-14615; EPA/600/J-91/135;
Stock Number PB91-216275
Additional Subjects Tracer studies ; Environmental transport ; Subsurface investigations ; Water pollution ; Path of pollutants ; Aquifers ; Ground water ; Chemical properties ; Field tests ; Physical properties ; Lithium ; Bromides ; Horizontal orientation ; Vertical migration ; Injection wells ; Stochastic processes ; Geochemistry ; Hydrogeology ; Hydrology ; Water quality ; Molybdates ; Reprints ; Cape Cod(Massachusetts)
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NTIS  PB91-216275 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/26/1991
Collation 18p
Abstract A large-scale natural gradient tracer experiment was conducted on Cape Cod, Massachusetts, to examine the transport and dispersion of solutes in a sand and gravel aquifer. The nonreactive tracer; bromide, and the reactive tracers, lithium and molybdate, were injected as a pulse in July 1985 and monitored in three dimensions as they moved as far as 280 m down-gradient through an array of multilevel samplers. The bromide cloud moved horizontally at a rate of 0.42 m per day. It also moved downward about 4 m because of density-induced sinking early in the test and accretion of areal recharge from precipitation. After 200 m of transport, the bromide cloud had spread more than 80 m in the direction of flow, but was only 14 m wide and 4-6 m thick. The lithium and molybdate clouds followed the same path as the bromide cloud, but their rates of movement were retarded about 50% relative to bromide movement because of sorption onto the sediments. (Copyright (c) 1991 by the American Geophysical Union.)
Supplementary Notes Pub. in Water Resources Research, v27 n5 p895-910 May 91. Prepared in cooperation with Massachusetts Inst. of Tech., Cambridge. Dept. of Civil Engineering. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK., and National Science Foundation, Washington, DC.
NTIS Title Notes Journal article.
Title Annotations Reprint: Large-Scale Natural Gradient Tracer Test in Sand and Gravel, Cape Cod, Massachusetts. 1. Experimental Design and Observed Tracer Movement.
Category Codes 68D; 68; 48G; 48F
NTIS Prices PC A03/MF A01
Primary Description 600/15
Document Type NT
Cataloging Source NTIS/MT
Control Number 125534545
Origin NTIS
Type CAT