Statutes, codes, and regulations
New Mexico Administrative Code
Title 20 - ENVIRONMENTAL PROTECTIONChapter 3 - RADIATION PROTECTION
Part 3 - LICENSING OF RADIOACTIVE MATERIALS
Section 20.3.3.329 - SCHEDULE A - EXEMPT CONCENTRATIONS

N.M. Admin. Code § 20.3.3.329

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Current through Register Vol. 36, No. 1, January 14, 2025
Section 20.3.3.329 - SCHEDULE A - EXEMPT CONCENTRATIONS
A. Table 339.1.

TABLE 329.1

Element

(Atomic Number)

Isotope

Column I Gas

Concentration

microcurie/milliliter1

Column II Liquid

and Solid Concentration

microcurie/milliliter2

Antimony (51)

Sb-122

Sb-124

Sb-125

3x10-4

2x10-4

1x10-3

Argon (18)

Ar-37

Ar-41

1x10-3

4x10-7

Arsenic (33)

As-73

As-74

As-76

As-77

5x10-3

5x10-4

2x10-4

8x10-4

Barium (56)

Ba-131

Ba-140

2x10-3

3x10-4

Beryllium (4)

Be-7

2x10-2

Bismuth (83)

Bi-206

4x10-4

Bromine (35)

Br-82

4x10-7

3x10-3

Cadmium (48)

Cd-109

Cd-115m

Cd-115

2x10-3

3x10-4

3x10-4

Calcium (20)

Ca-45

Ca-47

9x10-5

5x10-4

Carbon (6)

C-14

1x10-6

8x10-3

Cerium (58)

Ce-141

Ce-143

Ce-144

9x10-4

4x10-4

1x10-4

Cesium (55)

Cs-131

Cs-134m

Cs-134

2x10-2

6x10-2

9x10-5

Chlorine (17)

Cl-38

9x10-7

4x10-3

Chromium (24)

Cr-51

2x10-2

Cobalt (27)

Co-57

Co-58

Co-60

5x10-3

1x10-3

5x10-4

Copper (29)

Cu-64

3x10-3

Dysprosium (66)

Dy-165

Dy-166

4x10-3

4x10-4

Erbium (68)

Er-169

Er-171

9x10-4

1x10-3

Europium (63)

Eu-152

(T 1/2 = 9.2 h)

Eu-155

6x10-4

2x10-3

Fluorine (9)

F-18

2x10-6

8x10-3

Gadolinium (64)

Gd-153

Gd-159

2x10-3

8x10-4

Gallium (31)

Ga-72

4x10-4

Germanium (32)

Ge-71

2x10-2

Gold (79)

Au-196

Au-198

Au-199

2x10-3

5x10-4

2x10-3

Hafnium (72)

Hf-181

7x10-4

Hydrogen (1)

H-3

5x10-6

3x10-2

Indium (49)

In-113m

In-114m

1x10-2

2x10-4

Iodine (53)

I-126

I-131

I-132

I-133

I-134

3x10-9

3x10-9

8x10-8

1x10-8

2x10-7

2x10-5

2x10-5

6x10-4

7x10-5

1x10-3

Iridium (77)

Ir-190

Ir-192

Ir-194

2x10-3

4x10-4

3x10-4

Iron (26)

Fe-55

Fe-59

8x10-3

6x10-4

Krypton (36)

Kr-85m

Kr-85

1x10-6

3x10-6

Lanthanum (57)

La-140

2x10-4

Lead (82)

Pb-203

4x10-3

Lutetium (71)

Lu-177

1x10-3

Manganese (25)

Mn-52

Mn-54

Mn-56

3x10-4

1x10-3

1x10-3

Mercury (80)

Hg-197m

Hg-197

Hg-203

2x10-3

3x10-3

2x10-4

Molybdenum (42)

Mo-99

2x10-3

Neodymium (60)

Nd-147

Nd-149

6x10-4

3x10-3

Nickel (28)

Ni-65

1x10-3

Niobium (Columbium) (41)

Nb-95

Nb-97

1x10-3

9x10-3

Osmium (76)

Os-185

Os-191m

Os-191

Os-193

7x10-4

3x10-2

2x10-3

6x10-4

Palladium (46)

Pd-103

Pd-109

3x10-3

9x10-4

Phosphorous (15)

P-32

2x10-4

Platinum (78)

Pt-191

Pt-193m

Pt-197m

Pt-197

1x10-3

1x10-2

1x10-2

1x10-3

Potassium (19)

K-42

3x10-3

Praseodymium (59)

Pr-142

Pr-143

3x10-4

5x10-4

Promethium (61)

Pm-147

Pm-149

2x10-3

4x10-4

Rhenium (75)

Re-183

Re-186

Re-188

6x10-3

9x10-4

6x10-4

Rhodium (45)

Rh-103m

Rh-105

1x10-1

1x10-3

Rubidium (37)

Rb-86

7x10-4

Ruthenium (44)

Ru-97

Ru-103

Ru-105

Ru-106

4x10-3

8x10-4

1x10-3

1x10-4

Samarium (62)

Sm-153

8x10-4

Scandium (21)

Sc-46

Sc-47

Sc-48

4x10-4

9x10-4

3x10-4

Selenium (34)

Se-75

3x10-3

Silicon (14)

Si-31

9x10-3

Silver (47)

Ag-102

Ag-110m

Ag-111

1x10-3

3x10-4

4x10-4

Sodium (11)

Na-24

2x10-3

Strontium (38)

Sr-85

Sr-89

Sr-91

Sr-92

1x10-3

1x10-4

7x10-4

7x10-4

Sulfur (16)

S-35

9x10-8

6x10-4

Tantalum (73)

Ta-182

4x10-4

Technetium (43)

Tc-96m

Tc-96

1x10-1

1x10-3

Tellurium (52)

Te-125m

Te-127m

Te-127

Te-129m

Te-131m

Te-132

2x10-3

6x10-4

3x10-3

3x10-4

6x10-4

3x10-4

Terbium (65)

Tb-160

4x10-4

Thallium (81)

Tl-200

Tl-201

Tl-202

Tl-204

4x10-3

3x10-3

1x10-3

1x10-3

Thulium (69)

Tm-170

Tm-171

5x10-4

5x10-3

Tin (50)

Sn-113

Sn-125

9x10-4

2x10-4

Tungsten (Wolfram) (74)

W-181

W-187

4x10-3

7x10-4

Vanadium (23)

V-48

3x10-4

Xenon (54)

Xe-131m

Xe-133

Xe-135

4x10-6

3x10-6

1x10-6

Ytterbium (70)

Yb-175

1x10-3

Yttrium (39)

Y-90

Y-91m

Y-91

Y-92

Y-93

2x10-4

3x10-2

3x10-4

6x10-4

3x10-4

Zinc (30)

Zn-65

Zn-69m

Zn-69

1x10-3

7x10-4

2x10-2

Zirconium (40)

Zr-95

Zr-97

6x10-4

2x10-4

Beta or gamma emitting radioactive material not listed above with half-life less than 3 years.

1x10-10

1x10-6

Table 329.1 notes:

1 values are given in column I only for those materials normally used as gases;

2 microcuries per gram for solids.

B. Notes.
(1) Many radioisotopes disintegrate into isotopes which are also radioactive. In expressing the concentrations in Subsection A the activity stated is that of the parent isotope and takes into account the daughters.
(2) For purposes of 20.3.3.302 NMAC where there is involved a combination of isotopes, the limit for the combination shall be derived as follows: determine for each isotope in the product the ratio between the concentration present in the product and the exempt concentration established in Subsection A of this section for the specific isotope when not in combination. The sum of such ratios may not exceed "1" (i.e., unity). Example: (concentration of isotope A in product) / (exempt concentration of isotope A) + (concentration of isotope B in product) / (exempt concentration of isotope B) 1.
(3) The values in this table are presented in scientific notation. In this notation, a value of 3 x 10-4 represents a value of 3E-4 or 0.0003.
(4) To convert microcuries to SI units of kilobecquerels multiply the above values by 37. For example: Zirconium-97 of 2x10-4 microcurie multiplied by 37 is equivalent to 0.0074 kilobecquerel or 7.4 becquerels.

N.M. Admin. Code § 20.3.3.329

20.3.3.329 NMAC - Rp, 20.3.3.329 NMAC, 4/30/2009