ENVIRONMENT
Th tle i Summary of the concentration of plutonium-239 plus plutonium-240 in seawater in the Enewetak and
Gl
Bikini lagoons and in the North Equaterial Pacific Ocean.
Location sampled
Month/year
sampled
Numberof
locations
sampled
Mean 22°+2py concentration, pCi/m*
Soluble*
Soluble and particulate*
Enewetak Atoll
Lagoon surface
Lagoon surface
(2 km off the
inneratoll
perimeter)
Lagoon bottom
Lagoon bottom
(2 km off the
inner atoll
perimeter)
Lagoon reef
Ocean reef
Bikini Atoll
Lagoon surface
Lagoon bottom
Lagoonreef
11/72
29
29.0 (0.4-96)
8/74
48
23.6 (1.4-65)
42.2
5/76
11/72
8/74
19
6
23
17.0 {2.1-31)
29.6
44.0 (10-75)
47.4
5/76
11/78
10/75
5/76
10/76
10
5
9
6
3
11/72
28.5 (3-69)
14.0
17.0
114.0
26.0
55.0
10
(0.7-26)
(3-46}
(3-644)
(10-70)
{28-29}
84.0
277.0
40.4 (3.9-79)
52.0
52.0
40.0
44.0
29.0
(27-84)
(8.6-64}
(13-104)
(7-50)
29.0
2/77
11/72
2/77
11/78
18
7
8
8
10/72
4
7/78
3
30+ 08
11/72
4/76
5
3
48 + 3.0
53 +4 3.0
10/76
9
17+ 04
111.0
Equatorial Pacific
1-8 km west and
south of Bikini
40-144 km west of
Bikini
1.6 km south of
Enewetak
3.2 km west of
Enewetak
North Equatorial
Pacific
10/72 - 7/78
1546
.
14
0.38 + 0.12
*Values in parentheses representthe range in concentrations encountered atthe location in question.
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