TABLE I
TABLE II
c. Element (atomic number) and
radionuclide
Column 1 Column 2 Column 1 Column 2
Air
Water
Air
(µCi/ml)
----------
Water
(µCi/ml)
3 x 10-6
(µCi/ml) (µCi/ml)
----------
If it is known that Sr-90, I-125, I-126,
I-129, I-131, (I-133, Table II only),
Pb-210, Po-210, At-211, Ra-223,
Ra-224, Ra-226, Ac-227, Ra-228,
Th-230, Pa-231, Th-232, Th-nat,
Cm-248, Cf-254, and Fm-256 are not
present
If it is known that Sr-90, I-125, I-126,
I-129, I-131, (I-133, Table II only),
Pb-210, Po-210, Ra-223, Ra-226,
Ra-228, Pa-231, Th-nat, Cm-248,
Cf-254, and Fm-256 are not present
If it is known that Sr-90, I-129, (I-125,
I-126, I-131, Table II only), Pb-210,
Ra-226, Ra-228, Cm-248, and Cf-254
are not present
If it is known that (I-129, Table II only), ----------
Ra-226, and Ra-228 are not present
If it is known that alpha-emitters and
Sr-90, I-129, Pb-210, Ac-227, Ra-228,
Pa-230, Pu-241, and Bk-249 are not
present
If it is known that alpha-emitters and
Pb-210, Ac-227, Ra-228, and Pu-241 are
not present
If it is known that alpha-emitters and
Ac-227 are not present
9 x 10-5
----------
----------
6 x 10-5
----------
----------
2 x 10-6
2 x 10-5
6 x 10-7
3 x 10-6
----------
----------
1 x 10-10
1 x 10-7
----------
3 x 10-9
3 x 10-10
----------
1 x 10-11
----------
3 x 10-11
3 x 10-12
----------
----------
1 x 10-12
1 x 10-13
----------
----------
If it is known that Ac-227, Th-230,
Pa-231, Pu-238, Pu-239, Pu-240,
Pu-242, Pu-244, Cm-248, Cf-249 and
Cf-251 are not present
4. If the mixture of radionuclides consists of uranium and its daughter products in ore dust before
chemical processing of the uranium ore, the values specified below may be used in lieu of those
determined in accordance with Paragraph 1 above or those specified in Paragraphs 2 and 3.
a. For purposes of Table I, Column 1, 1 x 10-10 µCi/ml gross alpha activity; or 5 x 10-11 µCi/ml
natural uranium; or 75 micrograms per cubic meter of air natural uranium.
b. For purposes of Table II, Column 1, 3 x 10-12 µCi/ml gross alpha activity; or 2 x 10-12 µCi/ml
natural uranium; or 3 micrograms per cubic meter of air natural uranium.
Page 75
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