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| Acronym | Acronym Meaning | Additional Information |
|---|---|---|
| F | Fehrenheit | |
| F/M | Food to Microorganism Ratio | |
| FAA | Federal Aviation Administration | |
| FACA | Federal Advisory Committee Act | |
| FAN | Fixed Account Number | |
| FAO | Food and Agricultural Organization | |
| FATES | FIFRA and TSCA Enforcement System | |
| FB | Field Blank | |
| FBC | Fluidized Bed Combustion | |
| FBH | Fort Benjamin Harrison | |
| FBI | Federal Bureau of Investigation | |
| FCA | Fish Consumption Advisory | |
| FCC | Fluid Catalytic Converter | |
| FCCC | Framework Convention on Climate Change | |
| FCCU | Fluid Catalytic Cracking Unit | |
| FCO | Federal Coordinating Officer (in disaster areas) | |
| FCO | Forms Control Officer | |
| FDA | Food and Drug Administration | |
| FDF | Fundamentally Different Factors | |
| FDL | Final Determination Letter | |
| FDO | Fee Determination Official | |
| FE | Fugitive Emissions | |
| FEDS | Federal Energy Data System | |
| FEFx | Forced Expiratory Flow | |
| FEIS | Fugitive Emissions Information System | |
| FEL | Frank Effect Level | |
| FEMA | Federal Emergency Management Agency | |
| FEPCA | Federal Environmental Pesticide Control Act; enacted as amendments to FIFRA. | |
| FERC | Federal Energy Regulatory Commission | |
| FES | Factor Evaluation System | |
| FESOP | Federally Enforceable State Operating Permit | |
| FEV | Forced Expiratory Volume | |
| FEV1 | Forced Expiratory Volume--one second | |
| FEV1 | Front End Volatility Index | |
| FF | Federal Facilities | |
| FFAR | Fuel and Fuel Additive Registration | |
| FFDCA | Federal Food, Drug, and Cosmetic Act | |
| FFF | Firm Financial Facility | |
| FFFSG | Fossil-Fuel-Fired Steam Generator | |
| FFIS | Federal Facilities Information System | |
| FFP | Firm Fixed Price | |
| FFY | Federal Fiscal Year | |
| FGD | Flue-Gas Desulfurization | |
| FI | Facility Information | |
| FID | Flame Ionization Detector | |
| FIFRA | Federal Insecticide, Fungicide, and Rodenticide Act | |
| FIM | Friable Insulation Material | |
| FINDS | Facility Index System | |
| FIP | Final Implementation Plan | |
| FIPS | Federal Information Procedures System | |
| FIT | Field Investigation Team | |
| FLETC | Federal Law Enforcement Training Center | |
| FLM | Federal Land Manager | |
| FLP | Flash Point | |
| FLPMA | Federal Land Policy and Management Act | |
| FM | Fire Marshal (Office of the State) | |
| FMAP | Financial Management Assistance Project | |
| FML | Flexible Membrane Liner | |
| FMP | Facility Management Plan | |
| FMP | Financial Management Plan | |
| FMS | Financial Management System | |
| FMVCP | Federal Motor Vehicle Control Program | |
| FO | Final Order | |
| FOE | Friends Of the Earth | |
| FOIA | Freedom Of Information Act | |
| FOISD | Fiber Optic Isolated Spherical Dipole Antenna | |
| FONSI | Finding Of No Significant Impact | |
| FORAST | Forest Response to Anthropogenic Stress | |
| FP | Fine Particulate | |
| FP | Flash Point | |
| FPA | Federal Pesticide Act | |
| FPAS | Foreign Purchase Acknowledgement Statements | |
| FPD | Flame Photometric Detector | |
| FPEIS | Fine Particulate Emissions Information System | |
| FPPA | Federal Pollution Prevention Act | |
| FPR | Federal Procurement Regulation | |
| FQPA | Food Quality Protection Act | |
| FR | Federal Register | |
| FR | Final Rulemaking | |
| FRA | Federal Register Act | |
| FREDS | Flexible Regional Emissions Data System | |
| FRES | Forest Range Environmental Study | |
| FRM | Federal Reference Methods | |
| FRN | Federal Register Notice | |
| FRN | Final Rulemaking Notice | |
| FRPS | Federal Program Resources Statement | |
| FRPS | Formal Planning and Supporting System | |
| FRS | Formal Reporting System | |
| FRS | Facility Registry System (EPA) | |
| FS | Feasibility Study | |
| FSA | Food Security Act | |
| FSP | Field Sampling Plan | |
| FSR | Financial Status Report | |
| FSS | Fixated Scrubber Sludge | |
| FSS | Facility Status Sheet | |
| FSS | Federal Supply Schedule | |
| FTP | Federal Test Procedure (for motor vehicles) | |
| FTS | File Transfer Service | |
| FTTS | FIFRA/TSCA Tracking System | |
| FUA | Fuel Use Act | |
| FURS | Federal Underground Injection Control Reporting System | |
| FVMP | Federal Visibility Monitoring Program | |
| FWCA | Fish and Wildlife Coordination Act | |
| FWPCA | Federal Water Pollution and Control Act (aka CWA) | |
| FWPCA | Federal Water Pollution and Control Administration | |
| FY | Fiscal Year | |
| FYI | For Your Information |
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