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

Universal Citation: MT Admin Rules 37.14.758

Current through Register Vol. 18, September 20, 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.

Sec. 75-3-201, MCA; IMP, Sec. 75-3-201 and 75-3-204, MCA;

Disclaimer: These regulations may not be the most recent version. Montana may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.