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Table HH-3 to Subpart HH of Part 98—Landfill Gas Collection Efficiencies

Landfill Gas Collection Efficiencies

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  11. Appendix Table HH-3 to Subpart HH of Part 98
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Displayed edition2026-04-15
Last updated2026-04-15

Table HH-3 to Subpart HH of Part 98—Landfill Gas Collection Efficiencies

Table HH-3 to Subpart HH of Part 98—Landfill Gas Collection Efficiencies

DescriptionTerm IDLandfill gas collection

efficiency
A1: Area with no waste in-placeNot applicable; do not use this area in the calculation.
A2: Area without active gas collection, regardless of cover typeCE20%.
A3: Area with daily soil cover and active gas collectionCE350%.
A4: Area with an intermediate soil cover, or a final soil cover not meeting the criteria for A5 below, and active gas collectionCE465%.
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 collectionCE585%.
Area weighted average collection efficiency for landfillsCEave1 = (A2*CE2 + A3*CE3 + A4*CE4 + A5*CE5)/(A2 + A3 + A4 + A5).

[89 FR 31941, Apr. 25, 2024]