TABLE 5.39 Isotope NAVAJO WATER SAMPLES DISINTEGRATIONS PER MINUTE PER LITER AS OF 1 JULY 1957 Station N-9, 13Jul56 44.8' N 165° 16.2° £ Station N-12, 13 Jul 56 1° o34.7' N Surface Surface 50 m 4,750 12,400 8,100 280 600 2,250 zr’ Mn*4 zn Cel4 Co™ Sb'75 rua Ruy! Catt Surface 50m 164° 53.8' E 100m 250m 33 520 5,000 6,200 21 18 24 28 4,500 7,900 4,500 14,000 3,600 6,300 42 45 10 41 42 48 34 56 48 119 280 280 700 670 670 670 670 860 1,040 395 670 4 2.4 38 81 TABLE 5.4 66 ~ 150 eB 350 670 1.3 670 165° 15' E Analyzed 1 June 1957 Unfiltered Filtered Surface Water (dis/min)/liter Cel44 spits Ru! Rul 4,300 120 900 2,300 0 * 630 1,260 0 3,560 100 53 60 560 820 47 40 cst zr Mn*4 250 4,500 360 245 800 190 100 26 95 0 2,300 10 0 74 5 zn 35 * 1.2 Mev * No detectable activity. pct Suspended Sediment (dis/min) /liter Co * (dis/min)/liter pct * * (100y/min)/liter 1846 0.8 TEWA WATER SAMPLES COLLECTED 22 JULY 1956, 12° 05' N Suvface Water 128 wi2 ‘ ‘ Isotope 500m 44 36 670 Oct co# K* 12° 068.3' N 4 3 610 Co Station N-16, 14 Jul 56 165° 1L4' E * 71 (40y/min)/liter 29

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