StacksVerified U.S. regulatory reference

40 CFR Part 98, Table II-2

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
Anaerobic process typeCover typeMethane collection efficiency
Covered anaerobic lagoon (biogas capture)Bank to bank, impermeable0.975
Modular, impermeable0.7
Anaerobic sludge digester; anaerobic reactorEnclosed Vessel0.99