Biota Modeling in EPA's Preliminary Remediation Goal and Dose Compliance Concentration Calculators for Use in EPA Superfund Risk Assessment: Explanation of Intake Rate Derivation, Transfer Factor Compilation, and Mass Loading Factor Sources

Technical Report · Tue Nov 01 00:00:00 EDT 2016

DOI:https://doi.org/10.2172/1334468· OSTI ID:1334468

Manning, Karessa L. ^[1]; Dolislager, Fredrick G. ^[1]; Bellamy, Michael B. ^[1]

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1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The Preliminary Remediation Goal (PRG) and Dose Compliance Concentration (DCC) calculators are screening level tools that set forth Environmental Protection Agency's (EPA) recommended approaches, based upon currently available information with respect to risk assessment, for response actions at Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) sites, commonly known as Superfund. The screening levels derived by the PRG and DCC calculators are used to identify isotopes contributing the highest risk and dose as well as establish preliminary remediation goals. Each calculator has a residential gardening scenario and subsistence farmer exposure scenarios that require modeling of the transfer of contaminants from soil and water into various types of biota (crops and animal products). New publications of human intake rates of biota; farm animal intakes of water, soil, and fodder; and soil to plant interactions require updates be implemented into the PRG and DCC exposure scenarios. Recent improvements have been made in the biota modeling for these calculators, including newly derived biota intake rates, more comprehensive soil mass loading factors (MLFs), and more comprehensive soil to tissue transfer factors (TFs) for animals and soil to plant transfer factors (BV's). New biota have been added in both the produce and animal products categories that greatly improve the accuracy and utility of the PRG and DCC calculators and encompass greater geographic diversity on a national and international scale.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1334468
• Report Number(s): ORNL/TM-2016/328; TRN: US1700806
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
US EPA
DOMESTIC ANIMALS
ALGORITHMS
US SUPERFUND
CONCENTRATION RATIO
SOILS
INTAKE
REMEDIAL ACTION
DOSES
HAZARDS
SIMULATION
ECOLOGICAL CONCENTRATION
RISK ASSESSMENT
GROUND WATER
ABUNDANCE
COMPLIANCE
FOOD
ANIMAL FEEDS
ANIMAL TISSUES
HUMAN POPULATIONS
FARMS
PLANTS
CONTAMINATION
ACCURACY
CROPS
GARDENING
INGESTION
ISOTOPES
CORRECTIONS
biota modeling
radiation risk assessment
produce intake rate
soil mass loading factor
transfer factors
intake rate
ingestion rate
CERCLA
Superfund
PRG
DCC
farm products
beef
milk
goat
sheep
poultry
chicken
duck
goose
turkey
egg
pork