Titre :
|
Source investigation methods to determine PCE transport patways to groundwater at dry cleaners in Chico, California
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Auteurs :
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J. Taylor ;
T. Venus ;
AL Et ;
Sixth national outdoor action conference on aquifer restoration, ground water monitoring and geophysical methods, Las Vegas, 11-13 May 1992 (1992; USA)
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Type de document :
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article/chapitre/communication
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Année de publication :
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1992
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Format :
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p.245-259
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Langues:
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= Anglais
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Catégories :
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DECHETS
SOL GEOLOGIE
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Mots-clés:
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EAU SOUTERRAINE
;
DECHARGE
;
MESURE
;
QUALITE DE L'EAU
;
MILIEU NON SATURE
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Résumé :
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Tetrachloroethylene (PCE) contamination of groundwater underlying Chico, California has caused the closure of 5 public water supply wells, degraded the water quality in 23 private wells, and rendered up to 32000 acre-ft of groundwater non-potable. The principal source of the PCE is believed to be waste disposal from dry cleaning operations. The investigatoin tools employed to characterize the distribution of PCE in the vadose zone and shallow groundwater at dry cleaner sites included : soil gas surveys ; soil core sampling ; depth-discrete groundwater sampling using the Hydropunch II sampler ; groundwater samples obtained from monitoring wells ; soil gas samples obtained from vapor monitoring wells ; and dye-testing, video surveying, and high-pressure flush sampling of sanitary sewer lines.
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