DNAPL migration through a fractured perching layer

Journal Article · Wed Jul 01 00:00:00 EDT 1998 · Ground Water

DOI:https://doi.org/10.1111/j.1745-6584.1998.tb02834.x· OSTI ID:642336

Stephens, D B; Kelsey, J A; Prieksat, M A; Piepho, M G; Ankeny, M D ^[1]; Shan, C ^[2]

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1. Daniel B. Stephens and Associates Inc., Albuquerque, NM (United States)
2. Lawrence Berkeley Lab., CA (United States)

The migration of a DNAPL (TCA) was demonstrated by a laboratory flow visualization experiment. The system consists of two unconfined aquifers separated by a siltstone perching layer containing a single fracture that conducts water flow downward. The TCA migrated along a tortuous path in the upper sandy aquifer and moved rapidly through the fracture. The authors observed no DNAPL pooling above the fracture prior to its entry into the fracture, in contrast to existing mathematical solutions of hydrostatic initial conditions and full saturation below the fracture. A multiphase flow model predicted the experimentally observed mean behavior.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 642336
• Journal Information: Ground Water, Journal Name: Ground Water Journal Issue: 4 Vol. 36; ISSN GRWAAP; ISSN 0017-467X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AQUIFERS
ENVIRONMENTAL TRANSPORT
GEOLOGIC FRACTURES
MATHEMATICAL MODELS
ORGANIC COMPOUNDS
WATER POLLUTION