\\x>	4
*% \Surface Dose Compliance Concentration (SDCC) Calculator
si ........	_						I
Stuart Walker - walker.stuart@epa.gov, (703) 603-8748
Office of Superfund Remediation and Technology Innovation, US Environmental Protection Agency
SDCC: http://epa-sdcc.ornl.gov
What is SDCC?
SDCC Calculator
SDCC Calculator
External
Exposure
Exposure
isure
ley Buiidi
External
Exposure
External
Exposure
2D Exposure to Fixed Settled Dust
on Finite Slabs (Outdoor Worker)
3D Exposure to Fixed Settled Dust
on Outdoor Surfaces (Indoor
Worke r)
3D Exposure to Fixed
Contaminated Building Materials
(Outdoor Worker)
2D Exposure to Fixed
Contaminated Finite Slabs
(Resident)
Settled Dust (Resident)
•	SDCC stands for surface dose
compliance concentrations.
•	SDCCs are cleanup levels that
correspond to a specific dose of
radiation for radioactive
contamination on hard surfaces.
•	Superfund is NOT a dose-based
program.
•	Used for residential, indoor worker,
and outdoor worker exposure.
•	The SDCC Calculator is a tool that allows EPA to calculate radiation
cleanup levels that correspond to a specific dose from contaminated,
hard, outside surfaces (streets, sides of buildings.) The calculator uses
dose conversion factors (DCF) in calculating radiation dose.
•	Dose is the amount of radiation absorbed by a person's body.
•	DCFs use concentration of a radionuclide in soil, air, water, and food to
determine the dose of radiation a person at a contaminated site is
exposed to. DCFs also take into account the type of exposure
(inhalation, ingestion, or external) in determining dose.
•	Superfund takes into account cancer risk, not radiation dose, in deciding
cleanup levels. The DCC calculator is useful to show compliance with
previously existing regulation of clean-up levels that may be in place.
•	Below are some exposure pathways considered by the SDCC Calculator.
SDCC Calculation
Residential Land Use
Industrial Land Use
Outdoor Worker
Dose Conversion
Factors
El El El 0
External

-------