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| Acronym | Acronym Meaning | Additional Information |
|---|---|---|
| BAA | Broad Agency Announcement | |
| BAA | Board of Assistance Appeals | |
| BAC | Bioremediation Action Committee | |
| BAC | Biotechnology Advisory Committee | |
| BACM | Best Available Control Measures | |
| BACT | Best Available Control Technology | |
| BADT | Best Available Demonstrated Technology | |
| BAF | Bioaccumulation Factor | |
| BaP | Benzo(a)Pyrene | |
| BAP | Benefits Analysis Program | |
| BART | Best Available Retrofit Technology | |
| BASIS | Battelle's Automated Search Information System | |
| BAT | Best Available Technology | |
| BATEA | Best Available Treatment Economically Achievable | |
| BC | Branch Chief (IDEM) | |
| BCPCT | Best Conventional Pollutant Control Technology | |
| BCT | Best Control Technology | |
| BDAT | Best Demonstrated Achievable Technology | |
| BDCT | Best Demonstrated Control Technology | |
| BDT | Best Demonstrated Technology | |
| BEA | Brownfields Environmental Assessment | IDEM Guide for Citizen Participation |
| BEJ | Best Engineering Judgment | |
| BEJ | Best Expert Judgment | |
| BF | Bonafide Notice of Intent to Manufacture or Import (IMD/OTS) | |
| BF | Brownfields (IDEM) | |
| BGS | Below Ground Surface | |
| BGS | Below Ground Service | |
| BID | Background Information Document | |
| BID | Buoyancy Induced Dispersion | |
| BIOPLUME | Model to Predict the Maximum Extent of Existing Plumes | |
| BLM | U.S. Bureau of Land Management | |
| BLS | Bureau of Labor Statistics | |
| BMP | Best Management Practice(s) | |
| BMR | Baseline Monitoring Report | |
| BMT | Best Management Technique (or technology) | |
| BO | Budget Obligations | |
| BOA | Basic Ordering Agreement (Contracts) | |
| BOD | Biological Oxygen Demand | |
| BOD | Biochemical Oxygen Demand | |
| BOF | Basic Oxygen Furnace | |
| BOH | Board of Health | Indiana State Department of Health  |
| BOP | Basic Oxygen Process | |
| BOPF | Basic Oxygen Process Furnace | |
| BOYSNC | Beginning of Year Significant Non-Compliers | |
| BP | Boiling Point | |
| BP | Burn Pit | |
| BPJ | Best Professional Judgment | |
| BPT | Best Practicable Treatment | |
| BPT | Best Practicable Technology | |
| BPWTT | Best Practical Wastewater Treatment Technology | |
| BRAC | Base Realignment and Closure | |
| BRI | Building-Related Illness | |
| BRS | Bibliographic Retrieval Service | |
| BSI | British Standards Institute | |
| BSO | Benzene Soluble Organics | |
| BTEX | Benzene, Toluene, Ethylbenzene, Xylene | |
| BTU | British Thermal Unit | |
| BTZ | Below the Treatment Zone | |
| BUN | Blood Urea Nitrogen | |
| BuSET | Bureau of Safety Education and Training (part of the IN Dept. of Labor) | INsafe - Indiana's Worker Safety Initiative |
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