Indiana Administrative Code › Title 410 - INDIANA DEPARTMENT OF HEALTH › Article 5 - RADIOLOGICAL HEALTH › Rule 4 - Protection and Exposure Standards › Section 4-27 - Concentrations in air and water above natural background; Appendix A

Current through July 10, 2024
Authority: IC
				  16-41-35-26;
				  IC
				  16-41-35-29
Affected: IC 16-41-35
Sec. 27.
APPENDIX A
CONCENTRATIONS IN AIR AND WATER ABOVE NATURAL
				  BACKGROUND
Table I
Table II
Element (atomic number)
Isotope1/
Column 1
Air
(µCi/ml)
Column 2
Water (µCi/ml)
Column 1
Air
(µCi/ml)
Column 2 Water
µCi/ml)
Actinium (89)
Ac-227
S
20x10-12
6x10-5
8x10-14
2x10-6
I
3x10-11
9x10-3
9x10-13
3x10-4
Ac-228
S
8x10-8
3x10-3
3x10-9
9x10-5
I
2x10-8
3x10-3
6x10-10
9x10-5
Americium (95)
Am-241
S
6x10-12
1x10-4
2x10-13
4x10-6
I
1x10-10
8x10-4
4x10-12
3x10-5
Am-242m
S
6x10-12
1x10-4
2x10-13
4x10-6
I
3x10-10
3x10-3
9x10-12
9x10-5
Am-242
S
4x10-8
4x10-3
1x10-9
1x10-4
I
5x10-8
4x10-3
2x10-9
1x10-4
Am-243
S
6x10-12
1x10-4
2x10-13
4x10-6
I
1x10-10
8x10-4
4x10-12
3x10-5
Am-244
S
4x10-6
1x10-1
1x10-7
5x10-3
I
2x10-5
1x10-1
8x10-7
5x10-3
Antimony (51)
Sb-122
S
2x10-7
8x10-4
6x10-9
3x10-5
I
1x10-7
8x10-4
5x10-9
3x10-5
Sb-124
S
2x10-7
7x10-4
5x10-9
2x10-5
I
2x10-8
7x10-4
7x10-10
2x10-5
Sb-125
S
5x10-7
3x10-3
2x10-8
1x10-4
I
3x10-8
3x10-3
9x10-10
1x10-4
Argon (18)
Ar-37
Sub2/
6x10-3
-
1x10-4
-
Ar-41
Sub
2x10-6
-
4x10-8
-
Arsenic (33)
As-73
S
2x10-6
1x10-2
7x10-8
5x10-4
I
4x10-7
1x10-2
1x10-8
5x10-4
As-74
S
3x10-7
2x10-3
1x10-10
5x10-5
I
1x10-7
2x10-3
4x10-9
5x10-5
As-76
S
1x10-7
6x10-4
4x10-9
2x10-5
I
1x10-7
6x10-4
3x10-9
2x10-5
As-77
S
5x10-7
2x10-3
2x10-8
8x10-5
I
4x10-7
2x10-3
1x10-8
8x10-5
Astatine (85)
At-211
S
7x10-9
5x10-5
2x10-10
2x10-6
I
3x10-8
2x10-3
1x10-9
7x10-5
Barium (56)
Ba-131
S
1x10-6
5x10-3
4x10-8
2x10-4
I
4x10-7
5x10-3
1x10-8
2x10-4
Ba-140
S
1x10-7
8x10-4
4x10-9
3x10-5
I
4x10-8
7x10-4
1x10-9
2x10-5
Berkelium (97)
Bk-249
S
9x10-10
2x10-2
3x10-11
6x10-4
I
1x10-7
2x10-2
4x10-9
6x10-4
Bk-250
S
1x10-7
6x10-3
5x10-9
2x10-4
I
1x10-6
6x10-3
4x10-8
2x10-4
Beryllium (4)
Be-7
S
6x10-6
5x10-2
2x10-7
2x10-3
I
1x10-6
5x10-2
4x10-8
2x10-3
Bismuth (83)
Bi-206
S
2x10-7
1x10-3
6x10-9
4x10-5
I
1x10-7
1x10-3
5x10-9
4x10-5
Bi-207
S
2x10-7
2x10-3
6x10-9
6x10-5
I
1x10-8
2x10-3
5x10-10
6x10-5
Bi-210
S
6x10-9
1x10-3
2x10-10
4x10-5
I
6x10-9
1x10-3
2x10-10
4x10-5
Bi-212
S
1x10-7
1x10-2
3x10-9
4x10-4
I
2x10-7
1x10-2
7x10-9
4x10-4
Bromine (35)
Br-82
S
1x10-6
8x10-3
4x10-8
3x10-4
I
2x10-7
1x10-3
6x10-9
4x10-5
Cadmium (48)
Cd-109
S
5x10-8
5x10-3
2x10-9
2x10-4
I
7x10-8
5x10-3
3x10-9
2x10-4
Cd-115m
S
4x10-8
7x10-4
1x10-9
3x10-5
I
4x10-8
7x10-4
1x10-9
3x10-5
Cd-115
S
2x10-7
1x10-3
8x10-9
3x10-5
I
2x10-7
1x10-3
6x10-9
4x10-5
Calcium (20)
Ca-45
S
3x10-8
3x10-4
1x10-9
9x10-6
I
1x10-7
5x10-3
4x10-9
2x10-4
Ca-47
S
2x10-7
1x10-3
6x10-9
5x10-5
I
2x10-7
1x10-3
6x10-9
3x10-5
Californium (98)
Cf-249
S
2x10-12
1x10-4
5x10-14
4x10-6
I
1x10-10
7x10-4
3x10-12
2x10-5
Cf-250
S
5x10-12
4x10-4
2x10-13
1x10-5
I
1x10-10
7x10-4
3x10-12
3x10-5
Cf-251
S
2x10-12
1x10-4
6x10-14
4x10-6
I
1x10-10
8x10-4
3x10-12
3x10-5
Cf-252
S
6x10-12
2x10-4
2x10-13
7x10-6
I
3x10-11
2x10-4
1x10-12
7x10-6
Cf-253
S
8x10-10
4x10-3
3x10-11
1x10-4
I
8x10-10
4x10-3
3x10-11
1x10-4
Cf-254
S
5x10-12
4x10-6
2x10-13
1x10-7
I
5x10-12
4x10-6
2x10-13
1x10-7
Carbon (6)
C-14
S
4x10-6
2x10-2
1x10-7
8x10-4
(Co2)
Sub2/
5x10-5
1x10-6
Cerium (58)
Ce-141
S
4x10-7
3x10-3
2x10-8
9x10-5
I
2x10-7
3x10-3
5x10-9
9x10-5
Ce-143
S
3x10-7
1x10-3
9x10-9
4x10-5
I
2x10-7
1x10-3
7x10-9
4x10-5
Ce-144
S
1x10-8
3x10-4
3x10-10
1x10-5
I
6x10-9
3x10-4
2x10-10
1x10-5
Cesium (55)
Cs-131
S
1x10-5
7x10-2
4x10-7
2x10-3
I
3x10-6
3x10-2
1x10-7
9x10-4
Cs-134m
S
4x10-5
2x10-1
1x10-6
6x10-3
I
6x10-6
3x10-2
2x10-7
1x10-3
Cs-134
S
4x10-8
3x10-4
1x10-9
9x10-6
I
1x10-8
1x10-3
4x10-10
4x10-5
Cs-135
S
5x10-7
3x10-3
2x10-8
1x10-4
I
9x10-8
7x10-3
3x10-9
2x10-4
Cs-136
S
4x10-7
2x10-3
1x10-8
9x10-5
I
2x10-7
2x10-3
6x10-9
6x10-5
Cs-137
S
6x10-8
4x10-4
2x10-9
2x10-5
I
1x10-8
1x10-3
5x10-10
4x10-5
Chlorine (17)
Cl-36
S
4x10-7
2x10-3
1x10-8
8x10-5
I
2x10-8
2x10-3
8x10-10
6x10-5
Cl-38
S
3x10-6
1x10-2
9x10-8
4x10-4
I
2x10-6
1x10-2
7x10-8
4x10-4
Chromium (24)
Cr-51
S
1x10-5
5x10-2
4x10-7
2x10-3
I
2x10-6
5x10-2
8x10-8
2x10-3
Cobalt (27)
Co-57
S
3x10-6
2x10-2
1x10-7
5x10-4
I
2x10-7
1x10-2
6x10-9
4x10-4
Co-58m
S
2x10-5
8x10-2
6x10-7
3x10-3
I
9x10-6
6x10-2
3x10-7
2x10-3
Co-58
S
8x10-7
4x10-3
3x10-8
1x10-4
I
5x10-8
3x10-3
2x10-9
9x10-5
Co-60
S
3x10-7
1x10-3
1x10-8
5x10-5
I
9x10-9
1x10-3
3x10-10
3x10-5
Copper (29)
Cu-64
S
2x10-6
1x10-2
7x10-8
3x10-4
I
1x10-6
6x10-3
4x10-8
2x10-4
Curium (96)
Cm-242
S
1x10-10
7x10-4
4x10-12
2x10-5
I
2x10-10
7x10-4
6x10-12
2x10-5
Cm-243
S
6x10-12
1x10-4
2x10-13
5x10-6
I
1x10-10
7x10-4
3x10-12
2x10-5
Cm-244
S
9x10-12
2x10-4
3x10-13
7x10-6
I
1x10-10
8x10-4
3x10-12
3x10-5
Cm-245
S
5x10-12
1x10-4
2x10-13
4x10-6
I
1x10-10
8x10-4
4x10-12
3x10-5
Cm-246
S
5x10-12
1x10-4
2x10-13
4x10-6
I
1x10-10
8x10-4
4x10-12
3x10-5
Cm-247
S
5x10-12
1x10-4
2x10-13
4x10-6
I
1x10-10
6x10-4
4x10-12
2x10-5
Cm-248
S
6x10-13
1x10-5
2x10-14
4x10-7
I
1x10-"
4x10-5
4x10-13
1x10-6
Cm-249
S
1x10-5
6x10-2
4x10-7
2x10-3
I
1x10-5
6x10-2
4x10-7
2x10-3
Dysprosium (66)
Dy-165
S
3x10-6
1x10-2
9x10-8
4x10-4
I
2x10-6
1x10-2
7x10-8
4x10-4
Dy-166
S
2x10-7
1x10-3
8x10-9
4x10-5
I
2x10-7
1x10-3
7x10-9
4x10-5
Einsteinium (99)
Es-253
S
8x10-10
7x10-4
3x10-"
2x10-5
I
6x10-10
7x10-4
2x10-"
2x10-5
Es-254m
S
5x10-9
5x10-4
2x10-10
2x10-5
I
6x10-9
5x10-4
2x10-10
2x10-5
Es-254
S
2x10-"
4x10-4
6x10-13
1x10-5
I
1x10-10
4x10-4
4x10-12
1x10-5
Es-255
S
5x10-10
8x10-4
2x10-"
3x10-5
I
4x10-10
8x10-4
1x10-"
3x10-5
Erbium (68)
Er-169
S
6x10-7
3x10-3
2x10-8
9x10-5
I
4x10-7
3x10-3
1x10-8
9x10-5
Er-171
S
7x10-7
3x10-3
2x10-8
1x10-4
I
6x10-7
3x10-3
2x10-8
1x10-4
Europium (63)
Eu-152
S
4x10-7
2x10-3
1x10-8
6x10-5
(Tr=9.2 hrs)
I
3x10-7
2x10-3
1x10-8
6x10-5
Eu-152
S
1x10-8
2x10-3
4x10-10
8x10-5
(Tr=13 yrs)
I
2x10-8
2x10-3
6x10-10
8x10-5
Eu-154
S
4x10-9
6x10-4
1x10-10
2x10-5
I
7x10-9
6x10-4
2x10-10
2x10-5
Eu-155
S
9x10-8
6x10-3
3x10-9
2x10-4
I
7x10-8
6x10-3
3x10-9
2x10-4
Fermium (100)
Fm-254
S
6x10-8
4x10-3
2x10-9
1x10-4
I
7x10-8
4x10-3
2x10-9
1x10-4
Fm-255
S
2x10-8
1x10-3
6x10-10
3x10-5
I
1x10-8
1x10-3
4x10-10
3x10-5
Fm-256
S
3x10-9
3x10-5
1x10-10
9x10-7
I
2x10-9
3x10-5
6x10-11
9x10-7
Fluorine (9)
F-18
S
5x10-6
2x10-2
2x10-7
8x10-4
I
3x10-6
1x10-2
9x10-8
5x10-4
Gadolinium (64)
Gd-153
S
2x10-7
6x10-3
8x10-9
2x10-4
I
9x10-8
6x10-3
3x10-9
2x10-4
Gd-159
S
5x10-7
2x10-3
2x10-8
8x10-5
I
4x10-7
2x10-3
1x10-8
8x10-5
Gallium (31)
Ga-72
S
2x10-7
1x10-3
8x10-9
4x10-5
I
2x10-7
1x10-3
6x10-9
4x10-5
Germanium (32)
Ge-68
S
7x10-7
3x10-3
2x10-7
9x10-4
I
2x10-8
3x10-3
5x10-9
9x10-4
Ge-71
S
1x10-5
5x10-2
4x10-7
2x10-3
I
6x10-6
5x10-2
2x10-7
2x10-3
Gold (79)
Au-195
S
2x10-7
7x10-4
7x10-8
2x10-4
I
6x10-8
7x10-4
2x10-8
2x10-4
Au-196
S
1x10-6
5x10-3
4x10-8
2x10-4
I
6x10-7
4x10-3
2x10-8
1x10-4
Au-198
S
3x10-7
2x10-3
1x10-8
5x10-5
I
2x10-7
1x10-3
8x10-9
5x10-5
Au-199
S
1x10-6
5x10-3
4x10-8
2x10-4
I
8x10-7
4x10-3
3x10-8
2x10-4
Hafnium (72)
Hf-181
S
4x10-8
2x10-3
1x10-9
7x10-5
I
7x10-8
2x10-3
3x10-9
7x10-5
Holmium (67)
Ho-166
S
2x10-7
9x10-4
7x10-9
3x10-5
I
2x10-7
9x10-4
6x10-9
3x10-5
Hydrogen (1)
H-3
S
5x10-6
1x10-1
2x10-7
3x10-3
I
5x10-6
1x10-1
2x10-7
3x10-3
Sub2/
2x10-3
4x10-5
Indium (49)
In-113m
S
8x10-6
4x10-2
3x10-7
1x10-3
I
7x10-6
4x10-2
2x10-7
1x10-3
In-114m
S
1x10-7
5x10-4
4x10-9
2x10-5
I
2x10-8
5x10-4
7x10-10
2x10-5
In-115m
S
2x10-6
1x10-2
8x10-8
4x10-4
I
2x10-6
1x10-2
6x10-8
4x10-4
In-115
S
2x10-7
3x10-3
9x10-9
9x10-5
I
3x10-8
3x10-3
1x10-9
9x10-5
Iodine (53)
I-125
S
5x10-9
4x10-5
8x10-11
2x10-7
I
2x10-7
6x10-3
6x10-9
2x10-4
I-126
S
8x10-9
5x10-5
9x10-11
3x10-7
I
3x10-7
3x10-3
1x10-8
9x10-5
I-129
S
2x10-9
1x10-5
2x10-11
6x10-8
I
7x10-8
6x10-3
2x10-9
2x10-4
I-131
S
9x10-9
6x10-5
1x10-10
3x10-7
I
3x10-7
2x10-3
1x10-8
6x10-5
I-132
S
2x10-7
2x10-3
3x10-9
8x10-6
I
9x10-7
5x10-3
3x10-8
2x10-4
I-133
S
3x10-8
2x10-4
4x10-10
1x10-6
I
2x10-7
1x10-3
7x10-9
4x10-5
I-134
S
5x10-7
4x10-3
6x10-9
2x10-5
I
3x10-6
2x10-2
1x10-7
6x10-4
I-135
S
1x10-7
7x10-4
1x10-9
4x10-6
I
4x10-7
2x10-3
1x10-8
7x10-5
Iridium (77)
Ir-190
S
1x10-6
6x10-3
4x10-8
2x10-4
I
4x10-7
5x10-3
1x10-8
2x10-4
Ir-192
S
1x10-7
1x10-3
4x10-9
4x10-5
I
3x10-8
1x10-3
9x10-10
4x10-5
Ir-194
S
2x10-7
1x10-3
8x10-9
3x10-5
I
2x10-7
9x10-4
5x10-9
3x10-5
Iron (26)
Fe-55
S
9x10-7
2x10-2
3x10-8
8x10-4
I
1x10-6
7x10-2
3x10-8
2x10-3
Fe-59
S
1x10-7
2x10-3
5x10-9
6x10-5
I
5x10-8
2x10-3
2x10-9
5x10-5
Krypton (36)
Kr-85m
Sub2/
6x10-6
1x10-7
Kr-85
Sub
1x10-5
3x10-7
Kr-87
Sub
1x10-6
2x10-8
Kr-88
Sub
1x10-6
2x10-8
Lanthanum (57)
La-140
S
2x10-7
7x10-4
5x10-9
2x10-5
I
1x10-7
7x10-4
4x10-9
2x10-5
Lead (82)
Pb-203
S
3x10-6
1x10-2
9x10-8
4x10-4
I
2x10-6
1x10-2
6x10-8
4x10-4
Pb-210
S
1x10-10
4x10-6
4x10-12
1x10-7
I
2x10-10
5x10-3
8x10-12
2x10-4
Pb-212
S
2x10-8
6x10-4
6x10-10
2x10-5
I
2x10-8
5x10-4
7x10-10
2x10-5
Lutetium (71)
Lu-177
S
6x10-7
3x10-3
2x10-8
1x10-4
I
5x10-7
3x10-3
2x10-8
1x10-4
Manganese (25)
Mn-52
S
2x10-7
1x10-3
7x10-9
3x10-5
I
1x10-7
9x10-4
5x10-9
3x10-5
Mn-54
S
4x10-7
4x10-3
1x10-8
1x10-4
I
4x10-8
3x10-3
1x10-9
1x10-4
Mn-56
S
8x10-7
4x10-3
3x10-8
1x10-4
I
5x10-7
3x10-3
2x10-8
1x10-4
Mercury (80)
Hg-197m
S
7x10-7
6x10-3
3x10-8
2x10-4
I
8x10-7
5x10-3
3x10-8
2x10-4
Hg-197
S
1x10-6
9x10-3
4x10-8
3x10-4
I
3x10-6
1x10-2
9x10-8
5x10-4
Hg-203
S
7x10-8
5x10-4
2x10-9
2x10-5
I
1x10-7
3x10-3
4x10-9
1x10-4
Molybdenum (42)
Mo-99
S
7x10-7
5x10-3
3x10-8
2x10-4
I
2x10-7
1x10-3
7x10-9
4x10-5
Neodymium (60)
Nd-144
S
8x10-"
2x10-3
3x10-12
7x10-5
I
3x10-10
2x10-3
IxlO-11
8x10-5
Nd-147
S
4x10-7
2x10-3
1x10-8
6x10-5
I
2x10-7
2x10-3
8x10-9
6x10-5
Nd-149
S
2x10-6
8x10-3
6x10-8
3x10-4
I
1x10-6
8x10-3
5x10-8
3x10-4
Neptunium (93)
Np-237
S
4x10-12
9x10-5
1x10-13
3x10-6
I
1x10-10
9x10-4
4x10-12
3x10-5
Np-239
S
8x10-7
4x10-3
3x10-8
1x10-4
I
7x10-7
4x10-3
2x10-8
1x10-4
Nickel (28)
Ni-59
S
5x10-7
6x10-3
2x10-8
2x10-4
I
8x10-7
6x10-2
3x10-8
2x10-3
Ni-63
S
6x10-8
8x10-4
2x10-9
3x10-5
I
3x10-7
2x10-2
1x10-8
7x10-4
Ni-65
S
9x10-7
4x10-3
3x10-8
1x10-4
I
5x10-7
3x10-3
2x10-8
1x10-4
Niobium (41)
Nb-93m
S
1x10-7
1x10-2
4x10-9
4x10-4
I
2x10-7
1x10-2
5x10-9
4x10-4
Nb-95
S
5x10-7
3x10-3
2x10-8
1x10-4
I
1x10-7
3x10-3
3x10-9
1x10-4
Nb-97
S
6x10-6
3x10-2
2x10-7
9x10-4
I
5x10-6
3x10-2
2x10-7
9x10-4
Osmium (76)
Os-185
S
5x10-7
2x10-3
2x10-8
7x10-5
I
5x10-8
2x10-3
2x10-9
7x10-5
Os-191m
S
2x10-5
7x10-2
6x10-7
3x10-3
I
9x10-6
7x10-2
3x10-7
2x10-3
Os-191
S
1x10-6
5x10-3
4x10-8
2x10-4
I
4x10-7
5x10-3
1x10-8
2x10-4
Os-193
S
4x10-7
2x10-3
1x10-8
6x10-5
I
3x10-7
2x10-3
9x10-9
5x10-5
Palladium (46)
Pd-103
S
1x10-6
1x10-2
5x10-8
3x10-4
I
7x10-7
8x10-3
3x10-8
3x10-4
Pd-109
S
6x10-7
3x10-3
2x10-8
9x10-5
I
4x10-7
2x10-3
1x10-8
7x10-5
Phosphorus (15)
P-32
S
7x10-8
5x10-4
2x10-9
2x10-5
I
8x10-8
7x10-4
3x10-9
2x10-5
Platinum (78)
Pt-191
S
8x10-7
4x10-3
3x10-8
1x10-4
I
6x10-7
3x10-3
2x10-8
1x10-4
Pt-193m
S
7x10-6
3x10-2
2x10-7
1x10-3
I
5x10-6
3x10-2
2x10-7
1x10-3
Pt-193
S
1x10-6
3x10-2
4x10-8
9x10-4
I
3x10-7
5x10-2
1x10-8
2x10-3
Pt-197m
S
6x10-6
3x10-2
2x10-7
1x10-3
I
5x10-6
3x10-2
2x10-7
9x10-4
Pt-197
S
8x10-7
4x10-3
3x10-8
1x10-4
I
6x10-7
3x10-3
2x10-8
1x10-4
Plutonium (94)
Pu-238
S
2x10-12
1x10-4
7x10-14
5x10-6
I
3x10-11
8x10-4
1x10-12
3x10-5
Pu-239
S
2x10-12
1x10-4
6x10-14
5x10-6
I
4x10-11
8x10-4
1x10-12
3x10-5
Pu-240
S
2x10-12
1x10-4
6x10-14
5x10-6
I
4x10-11
8x10-4
1x10-12
3x10-5
Pu-241
S
9x10-11
7x10-3
3x10-12
2x10-4
I
4x10-8
4x10-2
1x10-9
1x10-3
Pu-242
S
2x10-12
1x10-4
6x10-14
5x10-6
I
4x10-11
9x10-4
1x10-12
3x10-5
Pu-243
S
2x10-6
1x10-2
6x10-8
3x10-4
I
2x10-6
1x10-2
8x10-8
3x10-4
Pu-244
S
2x10-12
1x10-4
6x10-14
4x10-6
I
3x10-11
3x10-4
1x10-12
1x10-5
Polonium (84)
Po-210
S
5x10-10
2x10-5
2x10-11
7x10-7
I
2x10-10
8x10-4
7x10-12
3x10-5
Potassium (19)
K-42
S
2x10-6
9x10-3
7x10-8
3x10-4
I
1x10-7
6x10-4
4x10-9
2x10-5
Praseodymium (59)
Pr-142
S
2x10-7
9x10-4
7x10-9
3x10-5
I
2x10-7
9x10-4
5x10-9
3x10-5
Pr-143
S
3x10-7
1x10-3
1x10-8
5x10-5
I
2x10-7
1x10-3
6x10-9
5x10-5
Promethium (61)
Pm-147
S
6x10-8
6x10-3
2x10-9
2x10-4
I
1x10-7
6x10-3
3x10-9
2x10-4
Pm-149
S
3x10-7
1x10-3
1x10-8
4x10-5
I
2x10-7
1x10-3
8x10-9
4x10-5
Protactinium (91)
Pa-230
S
2x10-9
7x10-3
6x10-11
2x10-4
I
8x10-10
7x10-3
3x10-11
2x10-4
Pa-231
S
1x10-12
3x10-5
4x10-14
9x10-7
I
1x10-10
8x10-4
4x10-12
2x10-5
Pa-233
S
6x10-7
4x10-3
2x10-8
1x10-4
I
2x10-7
3x10-3
6x10-9
1x10-4
Radium (88)
Ra-223
S
2x10-9
2x10-5
6x10-"
7x10-7
I
2x10-10
1x10-4
8x10-12
4x10-6
Ra-224
S
5x10-9
7x10-5
2x10-10
2x10-6
I
7x10-10
2x10-4
2x10-"
5x10-6
Ra-226
S
3x10-"
4x10-7
3x10-12
3x10-8
I
5x10-"
9x10-4
2x10-12
3x10-5
Ra-228
S
7x10-"
8x10-7
2x10-12
3x10-8
I
4x10-"
7x10-4
1x10-12
3x10-5
Radon (86)
Rn-220
S
3x10-7
-
1x10-8
-
I
-
-
-
-
Rn-2223/
S
3x10-8
-
3x10-9
Rhenium (75)
Re-183
S
3x10-6
2x10-2
9x10-8
6x10-4
I
2x10-7
8x10-3
5x10-9
3x10-4
Re-186
S
6x10-7
3x10-3
2x10-8
9x10-5
I
2x10-7
1x10-3
8x10-9
5x10-5
Re-187
S
9x10-6
7x10-2
3x10-7
3x10-3
I
5x10-7
4x10-2
2x10-8
2x10-3
Re-188
S
4x10-7
2x10-3
1x10-8
6x10-5
I
2x10-7
9x10-4
6x10-9
3x10-5
Rhodium (45)
Rh-103m
S
8x10-5
4x10-1
3x10-6
1x10-2
I
6x10-5
3x10-1
2x10-6
1x10-2
Rh-105
S
8x10-7
4x10-3
3x10-8
1x10-4
I
5x10-7
3x10-3
2x10-8
1x10-4
Rubidium (37)
Rb-86
S
3x10-7
2x10-3
1x10-8
7x10-5
I
7x10-8
7x10-4
2x10-9
2x10-5
Rb-87
S
5x10-7
3x10-3
2x10-8
1x10-4
I
7x10-8
5x10-3
2x10-9
2x10-4
Ruthenium (44)
Ru-97
S
2x10-6
1x10-2
8x10-8
4x10-4
I
2x10-6
1x10-2
6x10-8
3x10-4
Ru-103
S
5x10-7
2x10-3
2x10-8
8x10-5
I
8x10-8
2x10-3
3x10-9
8x10-5
Ru-105
S
7x10-7
3x10-3
2x10-8
1x10-4
I
5x10-7
3x10-3
2x10-8
1x10-4
Ru-106
S
8x10-8
4x10-4
3x10-9
1x10-5
I
6x10-9
3x10-4
2x10-10
1x10-5
Samarium (62)
Sm-147
S
7x10-"
2x10-3
2x10-12
6x10-5
I
3x10-10
2x10-3
9x10-12
7x10-5
Sm-151
S
6x10-8
1x10-2
2x10-9
4x10-4
I
1x10-7
1x10-2
5x10-9
4x10-4
Sm-153
S
5x10-7
2x10-3
2x10-8
8x10-5
I
4x10-7
2x10-3
1x10-8
8x10-5
Scandium (21)
Sc-46
S
2x10-7
1x10-3
8x10-9
4x10-5
I
2x10-8
1x10-3
8x10-10
4x10-5
Sc-57
S
6x10-7
3x10-3
2x10-8
9x10-5
I
5x10-7
3x10-3
2x10-8
9x10-5
Sc-48
S
2x10-7
8x10-4
6x10-9
3x10-5
I
1x10-7
8x10-4
5x10-9
3x10-5
Selenium (34)
Se-75
S
1x10-6
9x10-3
4x10-8
3x10-4
I
1x10-7
3x10-3
4x10-9
3x10-4
Silicon (14)
Si-31
S
6x10-6
3x10-2
2x10-7
9x10-4
I
1x10-6
6x10-3
3x10-8
2x10-4
Silver (47)
Ag-105
S
6x10-7
3x10-3
2x10-8
1x10-4
I
8x10-8
3x10-3
3x10-9
1x10-4
Ag-110m
S
2x10-7
9x10-4
7x10-9
3x10-5
I
1x10-8
9x10-4
3x10-10
3x10-5
Ag-111
S
3x10-7
1x10-3
1x10-8
4x10-5
I
2x10-7
1x10-3
8x10-9
4x10-5
Sodium (11)
Na-22
S
2x10-7
1x10-3
6x10-9
4x10-5
I
9x10-9
9x10-4
3x10-10
3x10-5
Na-24
S
1x10-6
6x10-3
4x10-8
2x10-4
I
1x10-7
8x10-4
5x10-9
3x10-5
Strontium (38)
Sr-85m
S
4x10-5
2x10-1
1x10-6
7x10-3
I
3x10-5
2x10-1
1x10-6
7x10-3
Sr-85
S
2x10-7
3x10-3
8x10-9
1x10-4
I
1x10-7
5x10-3
4x10-9
2x10-4
Sr-89
S
3x10-8
3x10-4
3x10-10
3x10-6
I
4x10-8
8x10-4
1x10-9
3x10-5
Sr-90
S
1x10-9
1x10-5
3x10-11
3x10-7
I
5x10-9
1x10-3
2x10-10
4x10-5
Sr-91
S
4x10-7
2x10-3
2x10-8
7x10-5
I
3x10-7
1x10-3
9x10-9
5x10-5
Sr-92
S
4x10-7
2x10-3
2x10-8
7x10-5
I
3x10-7
2x10-3
1x10-8
6x10-5
Sulfur (16)
S-35
S
3x10-7
2x10-3
9x10-9
6x10-5
I
3x10-7
8x10-3
9x10-9
3x10-4
Tantalum (73)
Ta-182
S
4x10-8
1x10-3
1x10-9
4x10-5
I
2x10-8
1x10-3
7x10-10
4x10-5
Technetium (43)
Tc-96m
S
8x10-5
4x10-1
3x10-6
1x10-2
I
3x10-5
3x10-1
1x10-6
1x10-2
Tc-96
S
6x10-7
3x10-3
2x10-8
1x10-4
I
2x10-7
1x10-3
8x10-9
5x10-5
Tc-97m
S
2x10-6
1x10-2
8x10-8
4x10-4
I
2x10-7
5x10-3
5x10-9
2x10-4
Tc-97
S
1x10-5
5x10-2
4x10-7
2x10-3
I
3x10-7
2x10-2
1x10-8
8x10-4
Tc-99m
S
4x10-5
2x10-1
1x10-6
6x10-3
I
1x10-5
8x10-2
5x10-7
3x10-3
Tc-00
S
2x10-6
1x10-2
7x10-8
3x10-4
I
6x10-8
5x10-3
2x10-9
2x10-4
Tellurium (52)
Te-125m
S
4x10-7
5x10-3
1x10-8
2x10-4
I
1x10-7
3x10-3
4x10-9
1x10-4
Te-127m
S
1x10-7
2x10-3
5x10-9
6x10-5
I
4x10-8
2x10-3
1x10-9
5x10-5
Te-127
S
2x10-6
8x10-3
6x10-8
3x10-4
I
9x10-7
5x10-3
3x10-8
2x10-4
Te-129m
S
8x10-8
1x10-3
3x10-9
3x10-5
I
3x10-8
6x10-4
1x10-9
2x10-5
Te-129
S
5x10-6
2x10-2
2x10-7
8x10-4
I
4x10-6
2x10-2
1x10-7
8x10-4
Te-131m
S
4x10-7
2x10-3
1x10-8
6x10-5
I
2x10-7
1x10-3
6x10-9
4x10-5
Te-132
S
2x10-7
9x10-4
7x10-9
3x10-5
I
1x10-7
6x10-4
4x10-9
2x10-5
Terbium (65)
Tb-165
S
1x10-7
1x10-3
3x10-9
4x10-5
I
3x10-8
1x10-3
1x10-9
4x10-5
Thallium (81)
Tl-200
S
3x10-6
1x10-2
9x10-8
4x10-4
I
1x10-6
7x10-3
4x10-8
2x10-4
Tl-201
S
2x10-6
9x10-3
7x10-8
3x10-4
I
9x10-7
5x10-3
3x10-8
2x10-4
Tl-202
S
8x10-7
4x10-3
3x10-8
1x10-4
I
2x10-7
2x10-3
8x10-9
7x10-5
Tl-204
S
6x10-7
3x10-3
2x10-8
1x10-4
I
3x10-8
2x10-3
9x10-10
6x10-5
Thorium (90)
Th-227
S
3x10-10
5x10-4
1x10-11
2x10-5
I
2x10-10
5x10-4
6x10-12
2x10-5
Th-228
S
9x10-12
2x10-4
3x10-13
7x10-6
I
6x10-12
4x10-4
2x10-13
1x10-5
Th-230
S
2x10-12
5x10-5
8x10-14
2x10-6
I
1x10-11
9x10-4
3x10-13
3x10-5
Th-231
S
1x10-6
7x10-3
5x10-8
2x10-4
I
1x10-6
7x10-3
7x10-8
2x10-4
Th-232
S
3x10-11
5x10-5
1x10-12
2x10-6
I
3x10-11
1x10-3
1x10-12
4x10-5
Th-natural
S
6x10-11
6x10-5
2x10-12
2x10-6
I
6x10-11
6x10-4
2x10-12
2x10-5
Th-234
S
6x10-8
5x10-4
2x10-9
2x10-5
I
3x10-8
5x10-4
1x10-9
2x10-5
Thulium (69)
Tm-170
S
4x10-8
1x10-3
1x10-9
5x10-5
I
3x10-8
1x10-3
1x10-9
5x10-5
Tm-171
S
1x10-7
1x10-2
4x10-9
5x10-4
I
2x10-7
1x10-2
8x10-9
5x10-4
Tin (50)
Sn-113
S
4x10-7
2x10-3
1x10-8
9x10-5
I
5x10-8
2x10-3
2x10-9
8x10-5
Sn-125
S
1x10-7
5x10-4
4x10-9
2x10-5
I
8x10-8
5x10-4
3x10-9
2x10-5
Tungsten (74)
W-181
S
2x10-6
1x10-2
8x10-8
4x10-4
I
1x10-7
1x10-2
4x10-9
3x10-4
W-185
S
8x10-7
4x10-3
3x10-8
1x10-4
I
1x10-7
3x10-3
4x10-9
1x10-4
W-187
S
4x10-7
2x10-3
2x10-8
7x10-5
I
3x10-7
2x10-3
1x10-8
6x10-5
Uranium (92)
U-230
S
3x10-10
1x10-4
1x10-11
5x10-6
I
1x10-10
1x10-4
4x10-12
5x10-6
U-232
S
1x10-10
8x10-4
3x10-12
3x10-5
I
3x10-11
8x10-4
9x10-13
3x10-5
U-233
S
5x10-10
9x10-4
2x10-11
3x10-5
I
1x10-10
9x10-4
4x10-12
3x10-5
U-234
S4/
6x10-10
9x10-4
2x10-11
3x10-5
I
1x10-10
9x10-4
4x10-12
3x10-5
U-235
S4/
5x10-10
8x10-4
2x10-11
3x10-5
I
1x10-10
8x10-4
4x10-12
3x10-5
U-236
S
6x10-10
1x10-3
2x10-11
3x10-5
I
1x10-10
1x10-3
4x10-12
3x10-5
U-238
S4/
7x10-11
1x10-3
3x10-12
4x10-5
I
1x10-10
1x10-3
5x10-12
4x10-5
U-240
S
2x10-7
1x10-3
8x10-9
3x10-5
I
2x10-7
1x10-3
6x10-9
3x10-5
U-natural
S4/
1x10-10
1x10-3
5x10-12
3x10-5
I
1x10-10
1x10-3
5x10-12
3x10-5
Vanadium (23)
V-48
S
2x10-7
9x10-4
6x10-9
3x10-5
I
6x10-8
8x10-4
2x10-9
3x10-5
Xenon (54)
Xe-131m
Sub2/
2x10-5
-
4x10-7
-
Xe-133m
Sub
1x10-5
-
3x10-7
-
Xe-133
Sub
1x10-5
-
3x10-7
-
Xe-135
Sub
4x10-6
-
1x10-7
-
Ytterbium (70)
Yb-175
S
7x10-7
3x10-3
2x10-8
1x10-4
I
6x10-7
3x10-3
2x10-8
1x10-4
Yttrium (39)
Y-88
S
1x10-7
2x10-4
4x10-8
8x10-5
I
5x10-8
2x10-4
2x10-8
8x10-5
Y-90
S
1x10-7
6x10-4
4x10-9
2x10-5
I
1x10-7
6x10-4
3x10-9
2x10-5
Y-91m
S
2x10-5
1x10-1
8x10-7
3x10-3
I
2x10-5
1x10-1
6x10-7
3x10-3
Y-91
S
4x10-8
8x10-4
1x10-9
3x10-5
I
3x10-8
8x10-4
1x10-9
3x10-5
Y-92
S
4x10-7
2x10-3
1x10-8
6x10-5
I
3x10-7
2x10-3
1x10-8
6x10-5
Y-93
S
2x10-7
8x10-4
6x10-9
3x10-5
I
1x10-7
8x10-4
5x10-9
3x10-5
Zinc (30)
Zn-65
S
1x10-7
3x10-3
4x10-9
1x10-4
I
6x10-8
5x10-3
2x10-9
2x10-4
Zn-69m
S
4x10-7
2x10-3
1x10-8
7x10-5
I
3x10-7
2x10-3
1x10-8
6x10-5
Zn-69
S
7x10-6
5x10-2
2x10-7
2x10-3
I
9x10-6
5x10-2
3x10-7
2x10-3
Zirconium (40)
Zr-93
S
1x10-7
2x10-2
4x10-9
8x10-4
I
3x10-7
2x10-2
1x10-8
8x10-4
Zr-95
S
1x10-7
2x10-3
4x10-9
6x10-5
I
3x10-8
2x10-3
1x10-9
6x10-5
Zr-97
S
1x10-7
5x10-4
4x10-9
2x10-5
I
9x10-8
5x10-4
3x10-9
2x10-5
Any single radionuclide not listed above with decay mode
						  other than alpha emission or spontaneous fission and with radioactive half-life
						  less than 2 hours. ***
Sub2/
1x10-6
-
3x10-8
-
Any single radionuclide not listed above with decay mode
						  other than alpha emission or spontaneous fission and with radioactive half-life
						  greater than 2 hours.
3x10-9
9x10-5
1x10-10
3x10-6
Any single radionuclide not listed above, which decays
						  by alpha emission or spontaneous fission.
6x10-13
4x10-7
2x-14
3x10-8
1/Soluble (S); Insoluble
				  (I).
2/"Sub" means that values given
				  are for submersion in a semispherical infinite cloud of airborne
				  material.
3/These radon concentrations are
				  appropriate for protection from radon-222 combined with its short-lived
				  daughters.
Alternatively, the value in Table I may be replaced by 1/3
				  "working level." (A "working level" is defined as any combinations of
				  short-lived radon-222 daughters, polonium-218, lead-214, bismuth-214, and
				  polonium-214 in 1 liter of air, without regard to the degree of equilibrium,
				  that will result in the ultimate emission of
				  1.3×105 MeV of alpha particle energy.) The
				  Table II value may be replaced by 1/30th of a "working level." The limit on
				  radon-222 concentrations in restricted areas may be based on an annual
				  average.
4/ For soluble mixtures of U-238,
				  U-234 and U-235 in air, chemical toxicity may be the limiting factor. If the
				  percent by weight (enrichment) of U-235 is less than 5, the concentration value
				  for a 40-hour workweek, Table I, is 0.2 milligrams uranium per cubic meter of
				  air average. For any enrichment, the product of the average concentration and
				  time of exposure during a 40-hour workweek shall not exceed
				  8×10-3 SA µCi-hr/ml, where SA is the
				  specific activity of the uranium inhaled. The concentration value for Table II
				  is 0.007 milgrams uranium per cubic meter of air. The specific activity for
				  natural uranium is 6.77×10-7 curies per gram uranium. The specific
				  activity for other mixtures of U-238, U- 235 and U-234, if not known, shall
				  be:
SA = 3.6 × 10-7 curies/gram
				  U U-depeleted
SA = (0.4 + 0.38 E + 0.0034 E2)
				  10-6 E > 0.72
APPENDIX A
CONCENTRATIONS IN AIR AND WATER ABOVE NATURAL
				  BACKGROUND
Table I
Table II
Isotope1/
Column 1
Column 2
Column 1
Column 2
Element (atomic number)
Air
						  (µCi/ml)
Water (µCi/ml)
Air
						  (µCi/ml)
Water (µCi/ml)
where E is the percentage by weight of U-235, expressed as
				  percent.
Note: In any case where there is a mixture in air or water of
				  more than one radionuclide, the limiting values for purposes of this appendix
				  should be determined as follows:
1. If
				the identity and concentration of each radionuclide in the mixture are known,
				the limiting values should be derived as follows: Determine, for each
				radionuclide in the mixture, the ratio between the quantity present in the
				mixture and the limit otherwise established in Appendix "A" for the specific
				radionuclide when not in a mixture. The sum of such ratios for all the
				radionuclides in the mixture may not exceed "1" (i.e., "unity").
Example: If radionuclides a, b, and c are present in
				  concentrations Ca, Cb, and
				  Cc, and if the applicable maximum permissible
				  concentrations (MPC's) are MPCa,
				  MPCb, and MPCc respectively, then
				  the concentrations shall be limited so that the following relationship
				  exists:
Click
				  here to view Image
2. If either the identity or the
				concentration of any radionuclide in the mixture is not known, the limiting
				values for purposes of Appendix "A" shall be:
a. For purposes of Table I, Col.
							 1...............................................................
6×10-13
b. For purposes of Table I, Col.
							 2...............................................................
4×10-7
c. For purposes of Table II, Col.
							 1................................................................
2×10-14
d. For purposes of Table II, Col.
							 2................................................................
3×10-8
3. If
				any of the conditions specified below are met, the corresponding values
				specified below may be used in lieu of those specified in paragraph 2 above.
a. If the identity of each radionuclide in
				the mixture is known but the concentration of one or more of the radionuclides
				in the mixture is not known, the concentration limit for the mixture is the
				limit specified in Appendix "A" for the radionuclide in the mixture having the
				lowest concentration limit: or
b.
				If the identity of each radionuclide in the mixture is not known, but it is
				known that certain radionuclides specified in Appendix "A" are not present in
				the mixture, the concentration limit for the mixture is the lowest
				concentration limit specified in Appendix "A" for any radionuclide which is not
				known to be absent from the mixture; or
c. Radionuclide
Table I
Table II
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (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 ...............................
-
9×10-5
-
3× 10-6
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..............
-
6×10-5
-
2×10-6
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.................
-
2×10-5
-
6×10-7
If it is known that (I-129, Table II only), Ra-226,
							 and Ra-228 are not present ............................................
-
3×10-6
-
1× 10-7
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........
3×10-9
-
1× 10-10
-
If it is known that alpha-emitters and Pb-210, Ac-227,
							 Ra-228, and Pu-241 are not present................................
3×10-10
1×10-11
-
If it is known that alpha-emitters and Ac-227 are not
							 present .....
3×10-11
-
1×10-12
-
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.
3×10-12
-
1×10-13
-