Capping System
nounPronunciation: /ˈkæpɪŋ ˈsɪstəm/
An engineered multi-layer cover installed over contaminated mine waste or exposed hazardous materials to prevent water infiltration and contaminant migration. Typical designs include soil, geotextile, and synthetic membrane layers designed for permeability and durability.
Plain English
A protective barrier of soil and plastic layers placed over toxic mine waste to prevent rainwater from washing contaminants into groundwater.
Etymology & History
Usage
"The reclamation plan specified a three-layer capping system with clay, geotextile, and topsoil to isolate the mine tailings."
Style guide notes: Hyphenate as 'capping-system' when used as compound adjective before a noun.
Also known as
Related Terms
Frequently Asked Questions
What materials are used in a typical capping system?
Synthetic membranes, geotextiles, clay layers, and topsoil installed in specific sequences to control permeability.
How long do capping systems remain effective?
Properly designed systems can function for 30+ years; effectiveness depends on regular inspection and maintenance.
Why Test Candidates on This?
Relevant for mid-level and senior reclamation engineering examinations and design certifications.
Required skill level: Mid