TABLE 3.4 - Samples from Shot 4 station | Volume (m1) 4-¥39{8)) Total Count (c/n x 10°7) Gamma —9,2(d)} 32,4) 4-¥40-P1| 385 4-Y40=P2 4-240-P3 4-YL0~P4 280 340 374 - 6.26 - 4°¥40-51 987 2465 '42¥40~S2 937 4°¥40~S3 11006 48> 58.0 4.08 2239 4.92 393 4026 - Liquid Top of No. 1 king- Liquid Port side of bridge Liquid Port side of bridge Liquid Port side of bridge - Liquid 10.9 - Liquid Starboard side of 11.4 - Liquid Starboard side of Starboard side of bridge 8.75 ~ Liquid 4=Y40-S5 840 7.36 “ Liquid ¥4,0056 E78 - Liquid 3.1.5 bottles Port side of bridge Port side of bridge Port side of bridge 818 (ad) post ave. of 6 Liquid Liquid Liquid 4-¥40-54| (a) (b) (c) Comments Beta 5,62(4)) 4eYL0~P5 “*¥40=P6 Description 15.9 Starboard side of bridge bridge bridge Starboard side of bridge Starboard side of bridge Y = Project 6.4 YAG Total volume of 7 bottles was 64.4 ml Count at U+2.6 days Count for YAG 40 samples at Ut+4 daya Evaluation of Samples Since the primary purpose of the investigation was to character- {ze the fallout material, with the ultimate aim of obtaining information which could be used to predict its contamination-decontamination behavior, it was originally considered essential that the fallout be collected under carefully specified conditions. Requirements were that no extraneous materials be collected before the detonation or after the fallout had stopped. No loss of material could be allowed after the collection of the fallout material had been made, Ideally, the samples should have been collected and examined as soon as possible after the cessation of fallout so that, in addition to meeting the above conditions, the sanmples would have been analyzed before extensive physical or chemical changes could occur. However, because of a combination of such factors as failure of the automatic sampling apparatus, changes in the recovery scheme, and incomplete recovery of station arrays these conditions were not attained. The result was that some samples were diluted by rain water and others by sea water (spray and/or waves). 32 Still others were