Administrative Rules of Montana › Department 37 - PUBLIC HEALTH AND HUMAN SERVICES › Chapter 37.14 - RADIATION CONTROL › Subchapter 37.14.7 - Standards for Protection Against Radiation › Rule 37.14.758 - RECORDS, REPORTS, AND NOTIFICATION: NOTIFICATIONS AND REPORTS TO INDIVIDUALS

Current through Register Vol. 13, July 5, 2024
(1) Requirements
				for notification and reports to individuals of exposure to radiation or
				radioactive material are specified in ARM
				37.14.1707
(2) When a licensee or registrant is required
				pursuant to ARM
				37.14.756 to report to the
				department any exposure of an individual to radiation or radioactive material,
				the licensee or registrant shall also notify the individual. Such notice shall
				be transmitted at a time not later than the transmittal to the department, and
				shall comply with the provisions of ARM
				37.14.1707(1).
APPENDIX A
CONCENTRATIONS IN AIR AND WATER ABOVE NATURAL
				  BACKGROUND
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Actinium (89)
Ac-227 Ac-228
S
I
S
I
2x10-12
3x10-11
9x10-8
2x10-8
6x10-5
							 9x10-3 3x10-3
							 3x10-3
8x10-14
							 9x10-13 3x10-9
							 6x10-10
2x10-6
							 3x10-4 9x10-5
							 9x10-5
Americium (95)
Am-241 Am-242m Am-242 Am-243 Am-244
S
I
S
I
S
I
S
I
S
I
6x10-12
1x10-10
6x10-12
3x10-10
4x10-8
5x10-8
6x10-12
1x10-10
4x10-6
2x10-5
1x10-4
8x10-4
1x10-4
3x10-3
4x10--3
4x10-3
1x10-4
8x10-4
1x10-1
1x10-1
2x10-13
							 4x10-12 2x10-13
							 9x10-12 1x10-9
							 2x10-9 2x10-13
							 4x10-12 1x10-7
							 8x10-7
4x10-6
							 3x10-5 4x10-6
							 9x10-5 1x10-4
							 1x10-4 4x10-6
							 3x10-5 5x10-3
							 5x10-3
Antimony (51)
Sb-122 Sb-124 Sb-125
S
I
S
I
S
I
2x10-7
							 1x10-7 2x10-7
							 2x10-8 5x10-7
							 3x10-8
8x10-4
							 8x10-4 7x10-4
							 7x10-4 3x10-3
							 3x10-3
6x10-9
5x10-9
5x10-9
7x10-10
2x10-8
9x10-10
3x10-5
3x10-5
2x10-5
2x1
1x10-4
1x10-4
Argon (18)
Ar-37 Ar-41
Sub2 Sub
6x10-3
							 2x10-6
---
---
1x10-4
							 4x10-8
--- ---
Arsenic (33)
As-73 As-74 As-76 As-77
S
I
S
I
S
I
S
I
2x10-6
							 4x10-7 3x10-7
							 1x10-7 1x10-7
							 1x10-7 5x10-7
							 4x10-7
1x10-2
							 1x10-2 2x10-3
							 2x10-3 6x10-4
							 6x10-4 2x10-3
							 2x10-3
7x10-8
							 1x10-8 1x10-8
							 4x10-9 4x10-9
							 3x10-9 2x10-8
							 1x10-8
5x10-4
5x10-4
5x10-5
5x10-5
2x10-5
2x10-5
8x10-5
8x10-5
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Astatine (85)
At-211
S
I
7x10-9
							 3x10-8
5x10-5
							 2x10-3
2x10-10
							 1x10-9
2x10-6
							 7x10-5
Barium (56)
Ba-131 Ba-140
S
I
S
I
1x10-6
							 4x10-7 1x10-7
							 4x10-8
5x10-3
							 5x10-3 8x10-4
							 7x10-4
4x10-8
							 1x10-8 4x10-9
							 1x10-9
2x10-4
							 2x10-4 3x10-5
							 2x10-5
Berkelium (97)
Bk-249 Bk-250
S
I
S
I
9x10-10
							 1x10-7 1x10-7
							 1x10-6
2x10-2
							 2x10-2 6x10-3
							 6x10-3
3x10-11
4x10-9
5x10-9
4x10-8
6x10-4
							 6x10-4 2x10-4
							 2x10-4
Beryllium (4)
Be-7
S
I
6x10-6
							 1x10-6
5x10-2
							 5x10-2
2x10-7
							 4x10-8
2x10-3 2x10-3
Bismuth (83)
Bi-206 Bi-207 Bi-210 Bi-212
S
I
S
I
S
I
S
I
2x10-7
							 1x10-7 2x10-7
							 1x10-8 6x10-9
							 6x10-9 1x10-7
							 2x10-7
1x10-3
1x10-3
2x10-3
2x10-3
1x10-3
1x10-3
1x10-2
1x10-2
6x10-9
5x10-9
6x10-9
5x10-10
2x10-10
2x10-10
3x10-9
7x10-9
4x10-5
							 4x10-5 6x10-5
							 6x10-5 4x10-5
							 4x10-5 4x10-4
							 4x10-4
Bromine (35)
Br-82
S
I
1x10-6
							 2x10-7
8x10-3
							 1x10-3
4x10-8
							 6x10-9
3x10-4
							 4x10-5
Cadmium (48)
Cd-109 Cd-115m Cd-115
S
I
S
I
S
I
5x10-8
							 7x10-8 4x10-8
							 4x10-8 2x10-7
							 2x10-7
5x10-3
5x10-3
7x10-4
7x10-4
1x10-3
1x10-3
2x10-9
3x10-9
1x10-9
1x10-9
8x10-9
6x10-9
2x10-4
							 2x10-4 3x10-5
							 3x10-5 3x10-5
							 4x10-5
Calcium (20)
Ca-45 Ca-47
S
I
S
I
3x10-8
							 1x10-7 2x10-7
							 2x10-7
3x10-4
							 5x10-3 1x10-3
							 1x10-3
1x10-9
							 4x10-9 6x10-9
							 6x10-9
9x10-6
							 2x10-4 5x10-5
							 3x10-5
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Californium (98)
Cf-249
Cf-250
Cf-251
Cf-252
Cf-253
Cf-254
S
I
S
I
S
I
S
I
S
I
S
I
2x10-12
							 1x10-10 5x10-12
							 1x10-10  2x10-12
							 1x10-10 6x10-12
							 3x10-11 8x10-10
							 8x10-10 5x10-12
							 5x10-12
1x10-4
							 7x10-4 4x10-4
							 7x10-4 1x10-4
							 8x10-4 2x10-4
							 2x10-4 4x10-3
							 4x10-3 4x10-6
							 4x10-6
5x10-14
							 3x10-12 2x10-13
							 3x10-12 6x10-14
							 3x10-12 2x10-13
							 1x10-12 3x10-11
							 3x10-11 2x10-13
							 2x10-13
4x10-6
							 2x10-5 1x10-5
							 3x10-5 4x10-6
							 3x10-5 7x10-6
							 7x10-6 1x10-4
							 1x10-4 1x10-7
							 1x10-7
Carbon (6)
C-14
(C02)
S
Sub2
4x10-6
							 5x10-5
2x10-2
---
1x10-7
							 1x10-6
8x10-4
---
Cerium (58)
Ce-141
Ce-143
Ce-144
S
I
S
I
S
I
4x10-7
							 2x10-7 3x10-7
							 2x10-7 1x10-8
							 6x10-9
3x10-3
							 3x10-3 1x10-3
							 1x10-3 3x10-4
							 3x10-4
2x10-8
							 5x10-9 9x10-9
							 7x10-9 3x10-10
							 2x10-10
9x10-5
							 9x10-5 4x10-5
							 4x10-5 1x10-5
							 1x10-5
Cesium (55)
Cs-131
Cs-134m
Cs-134
Cs-135
Cs-136
Cs-137
S
I
S
I
S
I
S
I
S
I
S
I
1x10-5
							 3x10-6 4x10-5
							 6x10-6 4x10-8
							 1x10-8 5x10-7
							 9x10-8 4x10-7
							 2x10-7 6x10-8
							 1x10-8
7x10-2
							 3x10-2 2x10-1
							 3x10-2 3x10-4
							 1x10-3 3x10-3
							 7x10-3 2x10-3
							 2x10-3 4x10-4
							 1x10-3
4x10-7
							 1x10-7 1x10-6
							 2x10-7 1x10-9
							 4x10-10 2x10-8
							 3x10-9 1x10-8
							 6x10-9 2x10-9
							 5x10-10
2x10-3
							 9x10-4 6x10-3
							 1x10-3 9x10-6
							 4x10-5 1x10-4
							 2x10-4 9x10-5
							 6x10-5 2x10-5
							 4x10-5
Chlorine (17)
Cl-36
Cl-38
S
I
S
I
4x10-7
							 2x10-8 3x10-6
							 2x10-6
2x10-3
							 2x10-3 1x10-2
							 1x10-2
1x10-8
							 8x10-10 9x10-8
							 7x10-8
8x10-5
							 6x10-5 4x10-4
							 4x10-4
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Chromium (24)
Cr-51
S
I
1x10-5
							 2x10-6
5x10-2
							 5x10-2
4x10-7
							 8x10-8
2x10-3
							 2x10-3
Cobalt (27)
Co-57 Co-58m Co-58 Co-60
S
I
S
I
S
I
S
I
3x10-6
2x10-7
2x10-5
9x10-6
8x10-7
5x10-8
3x10-7
9x10-9
2x10-2
1x10-2
8x10- 2
6x10-2
4x10-3
3x10-3
1x10-3
1x10-3
1x10-7
							 6x10-9 6x10-7
							 3x10-7 3x10-8
							 2x10-9 1x10-8
							 3x10-10
5x10-4
							 4x10-4 3x10-3
							 2x10-3 1x10-4
							 9x10-5 5x10-5
							 3x10-5
Copper (29)
Cu-64
S
I
2x10-6
							 1x10-6
1x10-2
							 6x10-3
7x10-8
							 4x10-8
3x10-4
							 2x10-4
Curium (96)
Cm-242 Cm-243 Cm-244 Cm-245
S
I
S
I
S
I
S
I
1x10-10
							 2x10-10 6x10-12
							 1x10-10 9x10-12
							 1x10-10 5x10-12
							 1x10-10
7x10-4
							 7x10-4 1x10-4
							 7x10-4 2x10-4
							 8x10-4 1x10-4
							 8x10-4
4x10-12
							 6x10-12 2x10-13
							 3x10-12 3x10-13
							 3x10-12 2x10-13
							 4x10-12
2x10-5
							 2x10-5 5x10-6
							 2x10-5 7x10-6
							 3x10-5 4x10-6
							 3x10-5
Cm-246 Cm-247 Cm-248 Cm-249
S
I
S
I
S
I
S
I
5x10-12
							 1x10-10 5x10-12
							 1x10-10 6x10-13
							 1x10-11 1x10-5
							 1x10-5
1x10-4
							 8x10-4 1x10-4
							 6x10-4 1x10-5
							 4x10-5 6x10-2
							 6x10-2
2x10-13
							 4x10-12 2x10-13
							 4x10-12 2x10-14
							 4x10-13 4x10-7
							 4x10-7
4x10-6
							 3x10-5 4x10-6
							 2x10-5 4x10-7
							 1x10-6 2x10-3
							 2x10-3
Dysprosium (66)
Dy-165 Dy-166
S
I
S
I
3x10-6
							 2x10-6 2x10-7
							 2x10-7
1x10-2
							 1x10-2 1x10-3
							 1x10-3
9x10-8
							 7x10-8 8x10-9
							 7x10-9
4x10-4
							 4x10-4 4x10-5
							 4x10-5
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Einsteinium(99)
Es-253
Es-254m
Es-254
Es-255
S
I
S
I
S
I
S
I
8x10-10
							 6x10-10 5x10-9
							 6x10-9 2x10-11
							 1x10-10 5x10-10
							 4x10-10
7x10-4
							 7x10-4 5x10-4
							 5x10-4 4x10-4
							 4x10-4 8x10-4
							 8x10-4
3x10-11
							 2x10-11 2x10-10
							 2x10-10 6x10-13
							 4x10-12 2x10-11
							 1x10-11
2x10-5
							 2x10-5 2x10-5
							 2x10-5 1x10-5
							 1x10-5 3x10-5
							 3x10-5
Erbium (68)
Er-169
Er-171
S
I
S
I
6x10-7
							 4x10-7 7x10-7
							 6x10-7
3x10-3
							 3x10-3 3x10-3
							 3x10-3
2x10-8
							 1x10-8 2x10-8
							 2x10-8
9x10-5
							 9x10-5 1x10-4
							 1x10-4
Europium (63)
Eu-152
(Tr=9.2 hrs)
Eu-152
(Tr=13 yrs)
Eu-154
Eu-155
S
I
S
I
S
I
S
I
4x10-7
							 3x10-7 1x10-8
							 2x10-8 4x10-9
							 7x10-9 9x10-8
							 7x10-8
2x10-3
							 2x10-3 2x10-3
							 2x10-3 6x10-4
							 6x10-4 6x10-3
							 6x10-3
1x10-8
							 1x10-8 4x10-10
							 6x10-10 1x10-10
							 2x10-10 3x10-9
							 3x10-9
6x10-5
							 6x10-5 8x10-5
							 8x10-5 2x10-5
							 2x10-5 2x10-4
							 2x10-4
Fermium (100)
Fm-254
Fm-255
Fm-256
S
I
S
I
S
I
6x10-8
							 7x10-8 2x10-8
							 1x10-8 3x10-9
							 2x10-9
4x10-3
							 4x10-3 1x10-3
							 1x10-3 3x10-5
							 3x10-5
2x10-9
							 2x10-9 6x10-10
							 4x10-10 1x10-10
							 6x10-11
1x10-4
							 1x10-4 3x10-5
							 3x10-5 9x10-7
							 9x10-7
Fluorine (9)
F-18
S
I
5x10-6
							 3x10-6
2x10-2
							 1x10-2
2x10-7
							 9x10-8
8x10-4
							 5x10-4
Gadolinium(64)
Gd-153
Gd-159
S
I
S
I
2x10-7
							 9x10-8 5x10-7
							 4x10-7
6x10-3
							 6x10-3 2x10-3
							 2x10-3
8x10-9
							 3x10-9 2x10-8
							 1x10-8
2x10-4
							 2x10-4 8x10-5
							 8x10-5
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Gallium (31)
Ga-72
S
I
2x10-7
							 2x10-7
1x10-3
							 1x10-3
8x10-9
							 6x10-9
4x10-5
							 4x10-5
Germanium (32)
Ge-71
S
I
1x10-5
							 6x10-6
5x10-2
							 5x10-2
4x10-7
							 2x10-7
2x10-3
							 2x10-3
Gold (79)
Au-196 Au-198 Au-199
S
I
S
I
S
I
1x10-6
							 6x10-7 3x10-7
							 2x10-7 1x10-6
							 8x10-7
5x10-3
							 4x10-3 2x1-3
							 1x10-3 5x10-3
							 4x10-3
4x10-8
							 2x10-8 1x10-8
							 8x10-9 4x10-8
							 3x10-8
2x10-4
							 1x10-4 5x10-5
							 5x10-5 2x10-4
							 2x10-4
Hafnium (72)
Hf-181
S
I
4x10-8
							 7x10-8
2x10-3
							 2x10-3
1x10-9
							 3x10-9
7x10-5
							 7x10-5
Holmium (67)
Ho-166
S
I
2x10-7
							 2x10-7
9x10-4
							 9x10-4
7x10-9
							 6x10-9
3x10-5
							 3x10-5
Hydrogen (1)
H-3
S
I
Sub2
5x10-6
							 5x10-6 2x10-3
1x10-1
1x10-1
---
2x10-7
							 2x10-7 4x10-5
3x10-3
3x10-3
---
Indium (49)
In-113m In-114m
S
I
S
I
8x10-6
							 7x10-6 1x10-7
							 2x10-8
4x10-2
							 4x10-2 5x10-4
							 5x10-4
3x10-7
							 2x10-7 4x10-9
							 7x10-10
1x10-3
							 1x10-3 2x10-5
							 2x10-5
In-115m In-115
S
I
S
I
2x10-6
							 2x10-6 2x10-7
							 3x10-8
1x10-2
							 1x10-2 3x10-3
							 3x10-3
8x10-8
							 6x10-8 9x10-9
							 1x10-9
4x10-4
							 4x10-4 9x10-5
							 9x10-5
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Iodine (53)
I-125
S
I
5x10-9
							 2x10-7
4x10-5
							 6x10-3
8x10-11
							 6x10-9
2x10-7
							 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-87m
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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
8x10-11
2x10-3
3x10-12
7x10-5
I
3x10-10
2x10-3
1x10-11
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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
6x10-11
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
2x10-11
5x10-6
Ra-226
S
3x10-11
4x10-7
3x10-12
3x10-8
I
5x10-11
9x10-4
2x10-12
3x10-5
Ra-228
S
7x10-11
8x10-7
2x10-12
3x10-8
I
4x10-11
7x10-4
1x10-12
3x10-5
Radon (86)
Rn-220
S
3x10-7
---
1x10-8
---
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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
7x10-11
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-47
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
8x10-3
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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
3x10-6
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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-99
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-160
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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
4x10-8
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Yttrium (39)
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
______________________________
(See notes at end of appendix)
Table I
Table II
Element (atomic number)
Isotope
1
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
Column 1 Air (µCi/ml)
Column 2 Water (µCi/ml)
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
2x10-14
3x10-8
1 Soluble (S) ; Insoluble (I).
2 "Sub" means that values given are for submersion in a
				  semi-spherical 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 one-third "working level." (A "working
				  level" is defined as any combination 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 x 105 MeV of alpha particle energy.) The Table II value may be
				  replaced by one-thirtieth (1/30) 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 x
				  10-3 SA mCi-hr/ml, where SA is the specific activity
				  of the uranium inhaled. The concentration value for Table II is 0.007
				  milligrams uranium per cubic meter of air. The specific activity for natural
				  uranium is 6.77 x 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 x 10-7 curies/gram U
				  U-depleted
SA= (C.4 + 0.38 E + 0.0034 E2)
				  10-6 E
>
0.72
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 1 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
				MPC's are MPCa, MPCb, and
				MPCc respectively, then the concentrations shall be
				limited so that the following relationship exists:
Ca /MPCa +
				  Cb/ MPCb+
				  Cc/MPCc <=1
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 -
				6x10-13
b. For purposes of Table I, Col. 2 -
				4x10-7
c. For purposes of Table II, Col. 1 -
				2x10-14
d. For purposes of Table II, Col. 2 -
				3x10-8
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
				1 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
Table I
Table II
c. Radionuclide
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), Fb-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...............
---
9x10-5
---
3x10-6
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...............
---
6x10-5
---
2x10-6
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...................
---
2x10-5
---
6x10-7
If it is known that (I-129, Table II only), Ra-226, and
							 Ra-228 are not present...........
---
3x10-6
---
1x10-7
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...........
3x10-9
---
1x10-10
---
If it is known that alpha-emitters and Pb-210, Ac-227,
							 Ra-228, and Pu-241 are not present....
3x10-10
---
11x10-11
---
If it is known that alpha-emitters and Ac-227 are not
							 present...................
3x10-12
---
11x10-12
---
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-241 are not present....
3x10-12
---
1x10-13
---
4. If a mixture of radionuclides consists of
				uranium and its daughters in ore dust prior to chemical separation of the
				uranium from the ore, the values specified below may be used for uranium and
				its daughters through radium-226, instead of those from paragraph 1, 2, or 3
				above.
a. For purposes of Table I, Column 1,
				1x10-10 F Ci/ml gross alpha activity; or
				5x10-11 F Ci/ml natural uranium; or 75 micrograms
				per cubic meter of air natural uranium.
b. For purposes of Table II, Column 1,
				3x10-12 F Ci/ml gross alpha activity;
				2x10-12 F Ci/ml natural uranium; or 3 micrograms per
				cubic meter of air natural uranium.
5. For purposes of this note, a radionuclide
				may be considered as not present in a mixture if (a) the ratio of the
				concentration of that radionuclide in the mixture (Ca)
				to the concentration limit for that radionuclide specified in Table II of
				Appendix A (MPCa) does not exceed 1/10, (i.e.,
				Ca/MPCa # 1/10) and (b) the sum
				of such ratios for all radionuclides considered as not present in the mixture
				does not exceed 1/4, (i.e.,
				Ca/MPCa +
				Cb/MPCb +....... # 1/4).
APPENDIX B
(For use in ARM
				  37.14.725,
				  37.14.742, and
				  37.14.743 )
Material
Microcuries
Americium-241
0.01
Antimony-122
100
Antimony-124
10
Antimony-125
10
Arsenic-73
100
Arsenic-74
10
Arsenic-76
10
Arsenic-77
100
Barium-131
10
Barium-133
10
Barium-140
10
Bismuth-210
1
Bromine-82
10
Cadmium-109
10
Cadmium-115m
10
Cadmium-115
100
Calcium-45
10
Calcium-47
10
Carbon-14
100
Cerium-141
100
Cerium-143
100
Cerium-144
1
Cesium-131
1,000
Cesium-134m
100
Cesium-134
1
Cesium-135
10
Cesium-136
10
Cesium-137
10
Chlorine-36
10
Chlorine-38
10
Chromium-51
1,000
Cobalt-58m
10
Cobalt-58
10
Cobalt-60
1
Copper-64
100
Dysprosium-165
10
Dysprosium-166
100
Erbium-169
100
Erbium-171
100
Europium-152 (9.2h)
100
Europium-152 (13 yr)
1
Europium-154
1
Europium-155
10
Fluorine-18
1,000
Material
Microcuries
Gadolinium-153
10
Gadolinium-159
100
Gallium-72
10
Germanium-71
100
Gold-198
100
Gold-199
100
Hafnium-181
10
Holmium-166
100
Hydrogen-3
1,000
Indium-113m
100
Indium-114m
10
Indium-115m
100
Indium-115
10
Iodine-125
1
Iodine-126
1
Iodine-129
0.1
Iodine-131
1
Iodine-132
10
Iodine-133
1
Iodine-134
10
Iodine-135
10
Iridium-192
10
Iridium-194
100
Iron-55
100
Iron-59
10
Krypton-85
100
Krypton-87
10
Lanthanum-140
10
Lutetium-177
100
Manganese-52
10
Manganese-54
10
Manganese-56
10
Mercury-197m
100
Mercury-197
100
Mercury-203
10
Molybdenum-99
100
Neodymium-147
100
Neodymium-149
100
Nickel-59
100
Nickel-63
10
Nickel-65
100
Niobium-93m
10
Niobium-95
10
Niobium-97
10
Osmium-185
10
Osmium-191m
100
Osmium-191
100
Osmium-193
100
Palladium-103
100
Material
Microcuries
Palladium-109
100
Phosphorus-32
10
Platinum-191
100
Platinum-193m
100
Platinum-193
100
Platinum-197m
100
Platinum-197
100
Plutonium-239
0.01
Polonium-210
0.1
Potassium-42
10
Praseodymium-142
100
Praseodymium-143
100
Promethium-147
10
Promethium-149
10
Radium-226
0.01
Rhenium-186
100
Rhenium-188
100
Rhodium-103m
100
Rhodium-105
100
Rubidium-86
10
Rubidium-87
10
Ruthenium-97
100
Ruthenium-103
10
Ruthenium-105
10
Ruthenium-106
1
Samarium-151
10
Samarium-153
100
Scandium-46
10
Scandium-47
100
Scandium-48
10
Selenium-75
10
Silicon-31
100
Silver-105
10
Silver-110m
1
Silver-111
100
Sodium-22
10
Sodium-24
10
Strontium-85
10
Strontium-89
1
Strontium-90
0.1
Strontium-91
10
Strontium-92
10
Sulphur-35
100
Tantalum-182
10
Technetium-96
10
Technetium-97m
100
Technetium-97
100
Technetium-99m
100
Material
Microcuries
Technetium-99
10
Tellurium-125m
10
Tellurium-127m
10
Tellurium-127
100
Tellurium-129m
10
Tellurium-129
100
Tellurium-131m
10
Tellurium-132
10
Terbium-160
10
Thallium-200
100
Thallium-201
100
Thallium-202
100
Thallium-204
10
Thorium (natural) 
							 1
100
Thulium-170
10
Thulium-171
10
Tin-113
10
Tin-125
10
Tungsten-181
10
Tungsten-185
10
Tungsten-187
100
Uranium (natural) 
							 2
100
Uranium-233
0.01
Uranium-234
Uranium-235
0.01
Vanadium-48
10
Xenon-131m
1,000
Xenon-133
100
Xenon-135
100
Ytterbium-175
100
Yttrium-90
10
Yttrium-91
10
Yttrium-92
100
Yttrium-93
100
Zinc-65
10
Zinc-69m
100
Zinc-69
1,000
Zirconium-93
10
Zirconium-95
10
Zirconium-97
10
__________________________
1 Based on alpha disintegration rate of Th-232, Th-230 and
				  their daughter products.
2 Based on alpha disintegration rate of U-238, U-234, and
				  U-235.
Material
Microcuries
Any alpha emitting radionuclide not listed above or
								mixtures of alpha emitters of unknown composition
0.01
Any radionuclide other than alpha emitting
								radionuclides, not listed above or mixtures of beta emitters of unknown
								composition
0.1
Note: For purposes of ARM 37.14.725, 37.14.742 and 37.14.743,
				  where there is involved a combination of isotopes in known amounts, the limit
				  for the combination should be derived as follows: determine, for each isotope
				  in the combination, the ratio between the quantity present in the combination
				  and the limit otherwise established for the specific isotope when not in
				  combination may not exceed "1" (i.e., "unity"). Example: For purposes of ARM
				  37.14.743, if a particular batch contains 20,000 F Ci of Au-198 and 50,000 F Ci
				  of C-14, it may also include not more than 300 F Ci of I-131. This limit was
				  determined as follows:
20,000 µCi Au-198/100,000 µCi + 50,000 µCi
				  C-14/100,000 µCi
+ 300 µCi I-131/1,000 µCi = 1
The denominator in each of the above ratios was obtained by
				  multiplying the figure in the table by 1,000 as provided in ARM 37.14.743.