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Table HH–3 to Subpart HH of Part 98 – Landfill Gas Collection Efficiencies
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]

['Air Programs']
['Greenhouse Gases']
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