Calculating Residual Risk from RESRAD-Build

["Anagnostopoulos, Harry W." <HAROLD.W.ANAGNOSTOPOULOS@saic.com>]

Does anyone have experience with calculating residual risk as the result of

a RESRAD-Build model output?



I'm working with a team that must develop some DCGLs for surface

contamination and then show that the DCGLs will comply with CERCLA residual

risk limits. I'm poorly versed with RESRAD and RESRAD-Build. I understand

that RESRAD will give an output in terms of risk, but RESRAD-Build does not

have that functionality. I'm told that the authors of the software were

contacted a few years ago, and they confirmed that the risk functinality was

not planned for in RESRAD-Build.



We understand that Federal Guidance report No. 13 provides risk factors in

terms of risk per some inverse concentration-time  (e.g. m2/Bq-s), but

RESRAD-Build does not have a report that indicates what the resultant

inverse concentration-time will be for each mode of exposure applicable to

the model. Only the dose/yr for each mode is provided.



Any help is appreciated. Please reply to my private e-mail unless the answer

is of interest to the general readership.



Thanks in advance!

-----------------------------------------------------------

Harry Anagnostopoulos, CHP

Senior Health Physicist

SAIC

500 NW Plaza, Suite 1000

St. Ann, MO  63074

(314) 770-3059 Phone

(314) 770-3067 Fax



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