-lJ]- An estimate of the potential tritium exposure can be obtained by comparing the tritium concentration in water condensed from the cloud. Reviewing the previous results from this standpoint, water from the Cah rile T” highest ground level air sample result (Buges—-F at 20 miles) tee tain ener liens cine taranlel 7.5 times the continuous exposure guide. this location was on-site; and impossible, is only It should be noted that (2) it would be very hard, (1) in fact for enough water to be removed during cloud passage (unnaturally or naturally by rain, etc.) to amount to more than several days drinking supply. A similar statement can be made for water from aerial samples; even those collected over GZ. SEST nat Vet atest ir Taking a more I AVA ILABLE CORY.:: samples, even the aerial ones collected over GZ, are protection guides. Also, fom & Orly all the water results, ra Pee oe of the daily average including snow samples, are less than 1/30 of the daily concentration guides. de beer eee eee “ None of these water samples represents human drinking water supplies. It is evident that the actual exposures of the population to environmental levels of tritium were considerably below the guides. ’ 94 ray ~ . ~, - c t ™~oot w~ J. 7 . “4 to: y7™ ~ rr . , _. gas ae ~ wy 4 ar. , oe ~ 4 ~ - oO - - - DOE ARCHIVES se go GRORiy "3