Feasibility in the past, the criteria used for vashing cars has been 7 ar/hr, and at e leter tine 20 mr/hr (remma), inside a vehicle. This resulted in washing about 75 carz (roughly 1/8 of the total monitored) following the seventh and ninth detonations of Upshot-Knothole. Under the recommendations given in Policy IV, the bus mentioned shove, but probably none of the cars, would have deen washed, The data given in table IV.b. indicate that if these radiation levels given had been predicted before the fallout, Righways #91 and 93 vould have been closed prior to the fallout fron the seventh detonation and possibly highway 793 for the ninth detonation. * C SOE/NY. peo ER d he '