StacksVerified U.S. regulatory reference

40 CFR Part 98, Table JJ-6

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
Anaerobic digester typeCover typeMethane collection efficiency
Covered anaerobic lagoon (biogas capture)Bank to bank, impermeable0.975
Modular, impermeable0.7
Complete mix, fixed film, or plug flow digesterEnclosed Vessel0.99