The program facilitates fast & easy calculation of total annual dose from beta and photon emitters in water from pCi/l or Bq/cubic meter measurements. GBPcalc compares the total dose per year to the 4 mrem established as an MCL in the Radionuclides section of the Safe Drinking Water Act, Federal Register, December 7, 2000. The guideline for groundwater cleanup is also 4 mrem at sites where beta/photon radioactive contamination has occurred.
PLEASE NOTE, GBPcalc ver. 1.0 used effective dose equivalent values derived from Federal Guidance Report No. 11 (EPA-520/1-88-020, September, 1988). Radionuclides not listed in FGR-11 have been supplemented with values from Appendix B (Federal Register, July 18, 1991, p 33120). These values are not applicable to Safe Drinking Water Act, Federal Register December 7, 2000.