. \ “ ip ed { . ‘+ “Aaa __— I TABLE 1 ISLANDS OF BIKINI ATOLL 1 . AREA, EXPOSURE RATE, AND SOIL-SURFACE — ZONE ACTIVITY OF CESIUM-137 (AS OF 1987) EXPOSURE RATE® (R/y} SOIL ACTIVITY, 0-10 cm DEPTH . ' TERRESTRIAL SURVEY? AREA (KM2} ISLAND i een NAM IROW ODRIK LOMILIK AOMEN TERRESTRIAL SURVEYS 0.54 0.20 0.04 0.22 0.17 0.15 0.048 0.011 0.15 0.033 _ _ _ _ - B6 BIKINI 2.41 0.22 0.23 B87 88 89 B10 B11 0.09 0.03 0.02 0.08 0.03 0.00085 0.0053 0.00085 0.14 0.00085 B12 ENEU 1.22 0.016 B13 B14 B15 B16 B17 B18 B19 B21 0.41 0.10 0.23 0.10 0.96 0.14 0.17 0.05 0.00085 0.0093 0.0093 0.03 0.26 0.31 0.078 BOKANTAUK IOMELER ENAELO ROJKERE EONJEBI AEROKOJLOL BIKORIN LELE ENEMAN ENEDRIK LUKOJ JELETE OROKEN AERIAL survey> SAMPLES DISTRIBUTED MEAN (pCi/’g)} {NUMBER} (pCi/g)} 30 9.7 2.3 30 6.6 _ _ _ _ — _ — _ _ 157 55 0.13 0.81 13 22 0.13 _ — — — — _ —~ 0.02 3.3 133 44 _ _ _ _ _ _ ~ — 0.13 _ 1.9 1.9 6.0 54 63 16 — — _ _ — — _ ~ _ _ “ — _ _ _ — 45 . vs 1 a. ' La f . ft ‘' : vin f- B1 B2 B3 B4 B5 AERIAL SURVEYS a. : a.. b. Tipton and Meibaum (2). The exposure rate and the specific activity calculated from it or measured in soil were due to rate was estimated at 1 meter above the ground. cesium-137. The Gudiksen et al. (17). . c. The federal standard is less than .45 roentgens per year (R/y). Robison et al. (6), based on dry weight of soil i ' — - er :. a, - . fresh weight). IO0004S | 49 (about 80 percent of