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Description | Landfill Gas Collection Efficiency |
A1: Area with no waste in-place | No applicable; do not use this area in the calculation. |
A2: Area without active gas collection, regardless of cover type | CE2: 0%. |
A3: Area with daily soil cover and active gas collection | CE3: 60%. |
A4: Area with an intermediate soil cover and active gas collection | CE: 75%. |
A5: Area with a final soil cover of 3 feet or thicker of clay or final cover (as approved by the relevant agency) and/or geomembrane cover system and active gas collection CE5: 95% | CE5: 95%. |
Weighted average collection efficiency for landfills: | |
Area weighted average collection efficiency for landfills | CEave1 - (A2*CE2 A3*CE3 A4*CE4 A5*CE5)/(A2 A3 A4 A5) |
[81 FR 89266, Dec. 9, 2016]