on qe. i , 4 Tags Yi 4 QC Concentration(ricrocuries per miliiiiter extrapolate ed ic 3 days after detona- eeererenenereeereed $4on) ra ‘ eoretical axis Whole-body Gamma Infinity Dose Virgin River Irrigation Canal, Kev 8.7 x 1079 é, Irrigation Diteh, 56 mi.no, of Pioche, fev 4.5 x 10~5 0.15 Lower Fahranagat Lake, Nev 3.2 x 10%6 2, Virgin River at Mesquite, Rev 2.6 x 1076 2.5 Bunkerville, Key (tar water) 1.2 x 10-46 7.0 "1.1 x 196 0.75 Crystal Springs, Mev (tap water) Bue to weather and to ettenustion of the gamva rays by buildings, the whole-bocy ganna cose estinated to huve been actually delivered was probably closer to one-half of the values shown. The raximz: permissible eoncentration of fission products in drinking water is § x low3 pe/=l extrapolated to three days after detonation. This is considerec a safe concentration for continuous eonsurption. hhereas, the monitoring of water sources is of value for docuzuentary tealNY. puryoses it should be recognized that the concentrations found nay vary widely within «mall geographical areus and even at the same loention at different tines (taking into account radioactive decay). eannot be placed in precise values. Thus, confidence Table ¥l.a. sugrests that even if one were to have stored up the water listed at Virgin River Irrigation Cenal Ct NX and subsisted entirely on this for a lifetine, the concentration would be