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From: J. D. Teresi and C. L. Newcombe, "Calculations of maximum permissible concentrations of radioactive fallout in water and air based upon military exposure criteria," Health Physics 4:275-288, 1961.

Table 7: Maximum permissible concentration (uc/cm3) in water and air of radioactive fallout for five exposure times (n) at eleven different times after burst to deliver a dose to the critical organ of 150 rems in 30 days (t)*

n

Exposure

Time after fission

3.5 hr

12 hr

1 day

2 days

4 days

7 days

14 days

28 days

105 days

210 days

365 days

1

Ing. Inh.

27 4.1 x 10^-3

8.5 1.3 x 10^-3

5.1 7.7 x 10^-1

3.0 4.5 x 10^-1

2.0 2.8 x 10^-1

1.4 1.9 x 10^-1

0.78 1.0 x 10^-1

0.83 9.8 x 10^-5

1.2 1.2 x 10^-1

1.3 1.2 x 10^-1

1.1 1.2 x 10^-1

7

Ing. Inh.

5.9 8.6 x 10^-1

1.9 2.8 x 10^-1

1.1 1.3 x 10^-4

0.63 8.0 x 10^-5

0.40 5.6 x 10^-5

0.26 3.7 x 10^-5

0.14 1.8 x 10^-5

0.14 1.7 x 10^-5

0.18 2.0 x 10^-5

0.19 2.0 x 10^-5

0.15 1.9 x 10^-5

14

Ing. Inh.

4.3 7.2 x 10^-4

1.4 2.3 x 10^-4

0.78 1.3 x 10^-4

0.43 5.3 x 10^-5

0.27 3.8 x 10^-5

0.18 2.5 x 10^-5

8.8 x 10^-21.1 x 10^-3

8.7 x 10^-21.0 x 10^-5

0.12 1.1 x 10^-5

0.10 1.1 x 10^-5

7.9 x 10^-21.0 x 10^-5

21

Ing. Inh.

3.7 5.4 x 10^-4

1.2 1.8 x 10^-4

0.67 9.7 x 10^-5

0.38 5.5 x 10^-5

0.23 3.3 x 10^-5

0.15 2.0 x 10^-5

7.3 x 10^-29.8 x 10^-6

6.8 x 10^-28.6 x 10^-6

8.1 x 10^-28.9 x 10^-6

6.6 x 10^-28.6 x 10^-6

5.2 x 10-28.7 x 10^-6

30

Ing. Inh.

3.6 5.4 x 10^-4

1.1 1.7 x 10^-4

0.62 8.4 x 10^-5

0.34 5.3 x 10^-5

0.21 2.8 x 10^-5

0.14 2.0 x 10^-5

6.8 x 10^-29.2 x 10^-6

6.0 x 10^-27.9 x 10^-6

6.3 x 10^-27.7 x 10^-6

5.1 x 10^-27.1 x 10^-6

3.8 x 10^-26.4 x 10^-6

* Ing. = ingestion; Inh. = inhalation

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