Acronyms
| AALM | All Ages Lead Model |
| ABA | absolute bioavailability |
| ADAF | age–dependent adjustment factor |
| ADD | average daily dose |
| ALAD | aminolevulinic acid dehydratase |
| ALM | Adult Lead Methodology |
| APS | advanced photon source |
| ARAR | Applicable or Relevant and Appropriate Requirement |
| ATSDR | Agency for Toxic Substances and Disease Registry |
| AUC | area under the curve |
| BaP | benzo(a)pyrene |
| BARGE | BioAccessibility Research Group of Europe |
| BCS | Bioavailability of Contaminants in Soil |
| bgs | below ground surface |
| BLL | blood lead level |
| CAB | California Arsenic Bioaccessibility (Method) |
| CCA | chromated copper arsenate |
| CD | criteria document |
| CDC | Centers for Disease Control and Prevention |
| CEC | cation exchange capacity |
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act |
| CG | cleanup goal |
| CR | cancer risk |
| CRM | certified reference material |
| CSF | cancer slope factor |
| CSM | conceptual site model |
| DCM | dichloromethane |
| DNA | deoxyribose nucleic acid |
| DOH | (Hawaii) Department of Health |
| DTSC | (California) Department of Toxic Substance Control |
| DQO | data quality objective |
| DU | decision unit |
| ECOS | Environmental Council of the States |
| ELCR | excess lifetime cancer risk |
| EMPA | electron microprobe analysis |
| ERIS | Environmental Research Institute of the States |
| ESTCP | Environmental Security Technology Certification Program |
| EVA | ethyl vinyl acetate |
| FDA | Food and Drug Agency |
| FOREhST | Fed Organic Estimation Human Simulation Test |
| GI | gastrointestinal |
| HHRA | human health risk assessment |
| HI | hazard index |
| HOC | hydrophobic organic compound |
| HQ | hazard quotient |
| IARC | International Agency for Research on Cancer |
| ICCVAM | Interagency Coordinating Committee for Validation of Alternative Methods |
| IEUBK | integrated exposure uptake biokinetic (model) |
| IRIS | Integrated Risk Information System |
| ISM | incremental sampling methodology |
| ISO | International Organization for Standards |
| ITRC | Interstate Technology and Regulatory Council |
| IVBA | in vitro bioaccessibility |
| IVIVC | in vivo – in vitro correlation |
| IVG | (Ohio State University, OSU) In Vitro Gastrointestinal |
| LADD | lifetime daily dose |
| MGP | manufactured gas plant |
| MMOA | mutagenic mode of action |
| NAPL | nonaqueous phase liquid |
| NAS | National Academy of Science |
| NRC | National Research Council |
| NTP | National Toxicology Program |
| OC | organic carbon |
| OECD | Organisation for Economic Co-operation and Development |
| OEHHA | (California) Office of Environmental Health Hazard Assessment |
| OSWER | Office of Solid Waste and Emergency Response |
| PAH | polycyclic aromatic hydrocarbon |
| PBET | (Royal Military College, RMC) Physiologically Based Extraction Test |
| PCB | polychlorinated biphenyls |
| PRA | probabilistic risk assessment |
| PRG | preliminary remediation goal |
| QA/QC | quality assurance/quality control |
| RAGS | Risk Assessment Guidance for Superfund |
| RBA | relative oral bioavailability |
| RBALP | Relative Bioaccessibility Leaching Procedure |
| RBCA | risk-based corrective action |
| RCRA | Resource Conservation and Recovery Act |
| RfC | reference concentration |
| RfD | reference dose |
| RME | reasonable maximum exposure |
| RPF | relative potency factor |
| RSD | Relative standard deviation |
| RSL | regional screening level |
| SAFR | small arms firing range |
| SBRC | Solubility/Bioavailability Research Consortium |
| SEM | standard error of the mean |
| SEP | sequential extraction procedures |
| SERDP | Strategic Environmental Research and Development Program |
| SHIME | Simulator of the Human Intestinal Microbial Ecosystem |
| SOM | soil organic matter |
| SOP | standard operating procedure |
| SRM | standard reference material |
| TCR | target cancer risk |
| TEF | toxicity equivalence factor |
| THI | target hazard index |
| THQ | target hazard quotient |
| UBM | Unified BARGE Method, Unified Bioaccessibility Method |
| UCL | upper confidence limit |
| USACE | United States Army Corps of Engineers |
| USEPA | United States Environmental Protection Agency |
| USGS | United States Geological Survey |
| WHO | World Health Organization |
| XAS | X-ray absorption spectroscopy |
