Assessment of the Performance of Engineered Waste Containment Barriers (2007) / Chapter Skim
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1 Introduction
1 Introduction
Pages 5-10
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From page 5... ...
Public Health Service and the American under state jurisdiction or owner or operator control. An asSociety of Civil Engineers published guides recommending sessment of the performance of permitted modern landfills that waste be compacted and covered with a new layer of soil and contaminated-site corrective actions is timely now that each day to guard against rodents and odors.2 some of these engineered barrier systems are approaching Waste disposal systems have since become increasingly the end of their postclosure monitoring periods (commonly sophisticated, driven by advances in research and engineer- 30 years)
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From page 6... ...
Consequently, the focus of This report focuses on engineered barriers that were de- this report is on performance over periods of several tens signed to contain municipal solid waste, other nonhazardous of years -- the operating, maintenance, and monitoring solid and liquid waste, hazardous and toxic wastes, and low- period for many waste collection systems (Box 1.2) -- and level radioactive wastes.
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From page 7... ...
and/or gas overlying a low-permeability barrier to component systems and the materials from which they are resist advective and diffusive transport of liquids and gas. constructed are the product of extensive materials research, No engineered barrier system can be relied on to comtheoretical analysis, laboratory testing, field measurements, pletely halt the transport of contaminants, but the rate of and construction considerations.
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From page 8... ...
. Although an extensive body of allowable values; and • the thickness of a geomembrane or a vegetated erosion literature exists on the performance of some barrier components, especially liners and covers, information on the control layer is greater than a specified minimum required performance of other components, especially vertical bar- value.
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From page 9... ...
Chapter 2 pro- evaluated for completeness and reliability in Chapter 5. vides an overview of engineered barrier systems, including Finally, Chapter 6 identifies information gaps and research waste types, barrier materials and their roles as components needs and presents recommendations for both assessing and of waste containment systems, and systems for isolating and enhancing the long-term performance of engineered barrier containing different types of waste.
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