4582 Maryland Parkway

WATER RESOURCES CENTER

Oi

°o

Las Vegas, Nevada 89109
(702) 736-2293

Desert Research Institute — University of Nevada System

February

Dr.

Richard 0.

3,

1980

Gilbert

Battelle Pacific Nortnwest
Laboratory
P.O. Box 999
Richland, WA
99352
Dear Dick:

In order to give you a better idea of the ranges and
distributions of the various kinds of errors that affected
the Enewetak data, I am enclosing a short writeup on that
subject.
I am also enclosing my draft of a proposed Tech
Note descriping how we propagated errors during the cleanup.

If that sounds familiar,
it about two years

doing it.

ago,

it's because you asked me to write

and I've

just now gotten around to

My understanding is that this information on errors will

be presented to

the Marshall

Islands Advisory Group

("Bair

Committee") at the same time as John Tipton's new information
on the soil mass attenuation coefficient.
I believe the idea
is to provide a comparison between the bias due to using the

wrong attenuation, and the random errors that are present.
Please look this material over, and if you have questions or

comments, of if you want more information before the committee
meets to hear Tipton, call me at (702) 736-2293.
Sincerely,

Pidir bond. bez TI Ka

Madaline Barnes
Research Statistician
MB: ds
Encl.

Water Resources Center

@ Energy and Atmospheric Environment Center

Applied Ecology and Physiology Center

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