Table 4. No-remediation-scenario cancer risk and hazard index (HI) values using the EPA methodology[a] (U.S. EPA, 1989a).

No-remediation scenario		Risk of cancer		HI


Best-estimate			7x10-7			1.6x10-3

Health-conservative[b]		2x10-3			1

Health-conservative[c]		1x10-3			1


	
[a]  See Isherwood et al. (1990) for an alternative method of 
computing the risk of cancer and HI.
	
[b]  Based on potential monitor well drilled 250 feet west of LLNL.
	
[c]  Based on receptor wells drilled in downtown Livermore.

UCRL-MI-127711 | Privacy & Legal Notice October 1, 2007
	Lawrence Livermore National Laboratory 7000 East Avenue • Livermore, CA 94550	Operated by Lawrence Livermore National Security, LLC, for the Department of Energy's National Nuclear Security Administration