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Technology Transfer Network - OAR Policy and Guidance

OAR Policy and Guidance Metarecord

Document Title/Subject:
Technical Support Document for the Evaluation of Aerobic Biological Treatment Units with Multiple Mixing Zones
Related Documents:
Appendix C to part 63

Technical Support Document for Evaluation of Thoroughly Mixed Biological Treatment Units (11/98)
Signed by: Unsigned

Signature Date:

Elaine Manning



Regulatory Authority:
Title 3
Emission Standards Division (OAQPS) /
Submitted By:
OGC Contact:

OGC Phone#:
Internet Contact:
Document Type:
Enabling Documents
EPA Document Number:

Federal Register:
Subject Category:
Hazardous air pollutants
Biological Treatment Units
Air pollutants
This document is intended to provide information to assist anyone who needs to evaluate the performance of a biological treatment unit that does not meet the definition of an enhanced biological treatment system or enhanced biological treatment process" (not considered a "thoroughly mixed treatment unit") because of limitations in overall unit mixing. This document is intended as support for evaluation of biological units with multiple mixing zones. The evaluation of the biological treatment unit can be used for certain compliance demonstration provisions in connection with Appendix C of 40 CFR part 63. Potential users of this document include owners and operators of sources who must demonstrate compliance with the requirements for biological treatment units presented in Appendix C of 40 CFR part 63, as well as enforcement personnel evaluating whether a specific biological treatment process meets the performance criteria required for regulation compliance.

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