00234190

Component

http://onlinepubs.trb.org...s/hrr/1967/193/193-004.pdf

AN ABRIDGEMENT IS PRESENTED OF THE PHENOMENA INVOLVED IN GROUNDWATER CONTAMINATION BY HIGHWAY SALTING. OF THE SALT APPLIED TO THE HIGHWAYS A PART EVENTUALLY LODGES IN OR ON NEARBY SOIL. SUBSEQUENT RAINFALL AND SNOWMELT THAT ENTER THE GROUND CARRY SOME SALT DOWN TO THE WATER TABLE IN WAVES OR PULSES AND INJECT IT INTO THE CONTINUOUS SLOW UNDERFLOW OF GROUNDWATER IN THE SATURATED ZONE BELOW THE WATER TABLE. IN THE SATURATED ZONE, THE SALT MOVES LATERALLY ALONG WITH THE GROUNDWATER WHICH, IN GENERAL, ULTIMATELY DISCHARGES INTO SURFACE STREAMS. IN SHALLOW UNCONFINED AQUIFERS IN UNCONSOLIDATED RELATIVELY PERMEABLE MATERIALS, THE CHLORIDE CONCENTRATIONS IN GROUNDWATER CYCLICALLY FLUCTUATE ANNUALLY AND THE CHLORIDE CONTENT INCREASES ONLY UNTIL A BALANCE IS REACHED BETWEEN SALT RECHARGE AND THE CONTINUOUS FLUSHING AND DILUTION BY GROUNDWATER.

Paper sponsored by Committee on Snow and Ice Control and presented at the 46th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

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1967

Highway Research Record

Digital/other

Chlorides; Contaminants; Groundwater; Highways; Infiltration; Sodium chloride; Sodium chloride; Soils; Water table

Contamination

Geotechnology; Highways; Hydraulics and Hydrology

TRIS, TRB

Jan 16 1994 12:00AM

• A STUDY OF SALT POLLUTION OF SOIL BY HIGHWAY SALTING
• EFFECT OF SODIUM CHLORIDE ON GRASSES FOR ROADSIDE USE
• POLLUTION ASPECTS ASSOCIATED WITH CHEMICAL DEICING
• THE RELATIONSHIP OF ROAD SALT APPLICATIONS TO SODIUM AND CHLORIDE ION LEVELS IN SOIL BORDERING MAJOR HIGHWAYS