40 CFR Table HH-3 to Subpart HH of Part 98
Landfill Gas Collection Efficiencies
June 9, 2020
Open Table
| Description | Landfill Gas Collection Efficiency |
|---|---|
| A1: Area with no waste in-place | Not 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, or a final soil cover not meeting the criteria for A5 below, and active gas collection | CE4: 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%. |
| 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). |
[74 FR 56374, Oct. 30, 2009, as amended at 75 FR 66474, Oct. 28, 2010; 81 FR 89266, Dec. 9, 2016]
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