Coal Combustion Waste Management at - DOE - Fossil Energy ...

TABLE 13 Liner Types at Recently Constructed Landfills and Surface
Impoundments
Liner Type
Landfills
Number
%
33
Surface
Impoundments
Number
%
Total
Number
Clay/compacted clay 11 29 3 17 14 25
Single/synthetic 4 11 6 33 10 18
Double 2 5 0 0 2 4
Combination 7 18 8 44 15 27
Multiple typesa 13 34 1 6 14 25
Subtotal units with linersb 37 97 18 100 55 99
Not linedc 1 3 0 0 1 2
Total units b 38 68 18 32 56 100
a Multiple types refers to cases where the survey response provided multiple liner classifications.
For example, a case in which a respondent checked double, synthetic, and compacted clay is
reported under multiple types.
b Percentage total has been rounded.
c Inert bottom ash, as defined by the State.
FIGURE 3 Liner Types Reported for Landfills (Note: One unit is
unlined because the material disposed of was classified by the State
as inert bottom ash, and, therefore, no liner is required.)
%