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Code of Federal Regulations Title 10. Energy § 10.30.70 Schedule A—Exempt concentrations
Current as of October 02, 2022 | Updated by FindLaw Staff
| [See footnotes at end of this table] | |||
|---|---|---|---|
| Col. I | Col. II | ||
|
Element (atomic number) | Isotope |
Gas concentration µCi/ml 1 |
Liquid and solid concentration µCi/ml 2 |
| Antimony (51)․․․․․․․․․․․․․․ | Sb 122․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 |
| Sb 124․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-4 | |
| Sb 125․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Argon (18)․․․․․․․․․․․․․․․․․ | A 37․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| A 41․․․․․․․․․․․․․․․․․․․․ | 4x10-7 | ||
| Arsenic (33)․․․․․․․․․․․․․․․ | As 73․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 5x10-3 |
| As 74․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 5x10-4 | |
| As 76․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-4 | |
| As 77․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 8x10-4 | |
| Barium (56)․․․․․․․․․․․․․․․․ | Ba 131․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 |
| Ba 140․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 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․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 |
| Cd 115m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 | |
| Cd 115․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 | |
| Calcium (20)․․․․․․․․․․․․․․․ | Ca 45․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10-5 |
| Ca 47․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 5x10-4 | |
| Carbon (6)․․․․․․․․․․․․․․․․․ | C 14․․․․․․․․․․․․․․․․․․․․ | 1x10-6․․․․․․․․․․․․․․․ | 8x10-3 |
| Cerium (58)․․․․․․․․․․․․․․․․ | Ce 141․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10-4 |
| Ce 143․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-4 | |
| Ce 144․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-4 | |
| Cesium (55)․․․․․․․․․․․․․․․․ | Cs 131․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-2 |
| Cs 134m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-2 | |
| Cs 134․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10-5 | |
| Chlorine (17)․․․․․․․․․․․․․․ | Cl 38․․․․․․․․․․․․․․․․․․․ | 9x10-7․․․․․․․․․․․․․․․ | 4x10-3 |
| Chromium (24)․․․․․․․․․․․․․․ | Cr 51․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-2 |
| Cobalt (27)․․․․․․․․․․․․․․․․ | Co 57․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 5x10-3 |
| Co 58․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Co 60․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 5x10-4 | |
| Copper (29)․․․․․․․․․․․․․․․․ | Cu 64․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-3 |
| Dysprosium (66)․․․․․․․․․․․․ | Dy 165․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-3 |
| Dy 166․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-4 | |
| Erbium (68)․․․․․․․․․․․․․․․․ | Er 169․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10-4 |
| Er 171․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Europium (63)․․․․․․․․․․․․․․ | Eu 152․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-4 |
| (T/2=9.2 Hrs)․․․․․․․․․․․ |
| ||
| Eu 155․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 | |
| Fluorine (9)․․․․․․․․․․․․․․․ | F 18․․․․․․․․․․․․․․․․․․․․ | 2x10-6․․․․․․․․․․․․․․․ | 8x10-3 |
| Gadolinium (64)․․․․․․․․․․․․ | Gd 153․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 |
| Gd 159․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 8x10-4 | |
| Gallium (31)․․․․․․․․․․․․․․․ | Ga 72․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-4 |
| Germanium (32)․․․․․․․․․․․․․ | Ge 71․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-2 |
| Gold (79)․․․․․․․․․․․․․․․․․․ | Au 196․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 |
| Au 198․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 5x10-4 | |
| Au 199․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 | |
| Hafnium (72)․․․․․․․․․․․․․․․ | Hf 181․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 7x10-4 |
| Hydrogen (1)․․․․․․․․․․․․․․․ | H 3․․․․․․․․․․․․․․․․․․․․․ | 5x10-6․․․․․․․․․․․․․․․ | 3x10-2 |
| Indium (49)․․․․․․․․․․․․․․․․ | In 113m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-2 |
| In 114m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-4 | |
| Iodine (53)․․․․․․․․․․․․․․․․ | I 126․․․․․․․․․․․․․․․․․․․ | 3x10-9․․․․․․․․․․․․․․․ | 2x10-5 |
| I 131․․․․․․․․․․․․․․․․․․․ | 3x10-9․․․․․․․․․․․․․․․ | 2x10-5 | |
| I 132․․․․․․․․․․․․․․․․․․․ | 8x10-8․․․․․․․․․․․․․․․ | 6x10-4 | |
| I 133․․․․․․․․․․․․․․․․․․․ | 1x10-8․․․․․․․․․․․․․․․ | 7x10-5 | |
| I 134․․․․․․․․․․․․․․․․․․․ | 2x10-7․․․․․․․․․․․․․․․ | 1x10-3 | |
| Iridium (77)․․․․․․․․․․․․․․․ | Ir 190․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 |
| Ir 192․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-4 | |
| Ir 194․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 | |
| Iron (26)․․․․․․․․․․․․․․․․․․ | Fe 55․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 8x10-3 |
| Fe 59․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-4 | |
| Krypton (36)․․․․․․․․․․․․․․․ | Kr 85m․․․․․․․․․․․․․․․․․․ | 1x10-6 | |
| Kr 85․․․․․․․․․․․․․․․․․․․ | 3x10-6 | ||
| Lanthanum (57)․․․․․․․․․․․․․ | La 140․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-4 |
| Lead (82)․․․․․․․․․․․․․․․․․․ | Pb 203․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-3 |
| Lutetium (71)․․․․․․․․․․․․․․ | Lu 177․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 |
| Manganese (25)․․․․․․․․․․․․․ | Mn 52․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 |
| Mn 54․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Mn 56․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Mercury (80)․․․․․․․․․․․․․․․ | Hg 197m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 |
| Hg 197․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-3 | |
| Hg 203․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-4 | |
| Molybdenum (42)․․․․․․․․․․․․ | Mo 99․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 |
| Neodymium (60)․․․․․․․․․․․․․ | Nd 147․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-4 |
| Nd 149․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-3 | |
| Nickel (28)․․․․․․․․․․․․․․․․ | Ni 65․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 |
| Niobium (Columbium) (41)․․․ | Nb 95․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 |
| Nb 97․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10-3 | |
| Osmium (76)․․․․․․․․․․․․․․․․ | Os 185․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 7x10-4 |
| Os 191m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-2 | |
| Os 191․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 | |
| Os 193․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-4 | |
| Palladium (46)․․․․․․․․․․․․․ | Pd 103․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-3 |
| Pd 109․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10-4 | |
| Phosphorus (15)․․․․․․․․․․․․ | P 32․․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-4 |
| Platinum (78)․․․․․․․․․․․․․․ | Pt 191․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 |
| Pt 193m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-2 | |
| Pt 197m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-2 | |
| Pt 197․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Potassium (19)․․․․․․․․․․․․․ | K 42․․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-3 |
| Praseodymium (59)․․․․․․․․․․ | Pr 142․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 |
| Pr 143․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 5x10-4 | |
| Promethium (61)․․․․․․․․․․․․ | Pm 147․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10−3 |
| Pm 149․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10−4 | |
| Rhenium (75)․․․․․․․․․․․․․․․ | Re 183․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10−3 |
| Re 186․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10−4 | |
| Re 188․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-4 | |
| Rhodium (45)․․․․․․․․․․․․․․․ | Rh 103m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-1 |
| Rh 105․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Rubidium (37)․․․․․․․․․․․․․․ | Rb 86․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 7x10-4 |
| Ruthenium (44)․․․․․․․․․․․․․ | Ru 97․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-4 |
| Ru 103․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 8x10-4 | |
| Ru 105․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Ru 106․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-4 | |
| Samarium (62)․․․․․․․․․․․․․․ | Sm 153․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 8x10-4 |
| Scandium (21)․․․․․․․․․․․․․․ | Sc 46․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-4 |
| Sc 47․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10-4 | |
| Sc 48․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 | |
| Selenium (34)․․․․․․․․․․․․․․ | Se 75․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-3 |
| Silicon (14)․․․․․․․․․․․․․․․ | Si 31․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10-3 |
| Silver (47)․․․․․․․․․․․․․․․․ | Ag 105․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 |
| Ag 110m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 | |
| Ag 111․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-4 | |
| Sodium (11)․․․․․․․․․․․․․․․․ | Na 24․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 |
| Strontium (38)․․․․․․․․․․․․․ | Sr 85․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-4 |
| Sr 89․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-4 | |
| Sr 91․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 7x10-4 | |
| Sr 92․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 7x10-4 | |
| Sulfur (16)․․․․․․․․․․․․․․․․ | S 35․․․․․․․․․․․․․․․․․․․․ | 9x10-8․․․․․․․․․․․․․․․ | 6x10-4 |
| Tantalum (73)․․․․․․․․․․․․․․ | Ta 182․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-4 |
| Technetium (43)․․․․․․․․․․․․ | Tc 96m․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-1 |
| Tc 96․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Tellurium (52)․․․․․․․․․․․․․ | Te 125m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-3 |
| Te 127m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-4 | |
| Te 127․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-3 | |
| Te 129m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 | |
| Te 131m․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-4 | |
| Te 132․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 | |
| Terbium (65)․․․․․․․․․․․․․․․ | Tb 160․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-4 |
| Thallium (81)․․․․․․․․․․․․․․ | Tl 200․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-3 |
| Tl 201․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-3 | |
| Tl 202․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Tl 204․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 | |
| Thulium (69)․․․․․․․․․․․․․․․ | Tm 170․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 5x10-4 |
| Tm 171․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 5x10-3 | |
| Tin (50)․․․․․․․․․․․․․․․․․․․ | Sn 113․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 9x10-4 |
| Sn 125․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-4 | |
| Tungsten (Wolfram) (74)․․․․ | W 181․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 4x10-3 |
| W 187․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 7x10-4 | |
| Vanadium (23)․․․․․․․․․․․․․․ | V 48․․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 |
| Xenon (54)․․․․․․․․․․․․․․․․․ | Xe 131m․․․․․․․․․․․․․․․․․ | 4x10-6 | |
| Xe 133․․․․․․․․․․․․․․․․․․ | 3x10-6 | ||
| Xe 135․․․․․․․․․․․․․․․․․․ | 1x10-6 | ||
| Ytterbium (70)․․․․․․․․․․․․․ | Yb 175․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 |
| Yttrium (39)․․․․․․․․․․․․․․․ | Y 90․․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-4 |
| Y 91m․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-2 | |
| Y 91․․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 | |
| Y 92․․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-4 | |
| Y 93․․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 3x10-4 | |
| Zinc (30)․․․․․․․․․․․․․․․․․․ | Zn 65․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 1x10-3 |
| Zn 69m․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 7x10-4 | |
| Zn 69․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-2 | |
| Zirconium (40)․․․․․․․․․․․․․ | Zr 95․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 6x10-4 |
| Zr 97․․․․․․․․․․․․․․․․․․․ | ․․․․․․․․․․․․․․․․․․․․ | 2x10-4 | |
| Beta and/or gamma emitting byproduct material not listed above with half-life less than 3 years | ․․․․․․․․․․․․․․․․․․․․․․․ | 1x10-10․․․․․․․․․․․․․․ | 1x10-6 |
| Footnotes to Schedule A: |
1 Values are given only for those materials normally used as gases.
2 μCi/gm for solids.
Note 1: Many radioisotopes disintegrate into isotopes which are also radioactive. In expressing the concentrations in Schedule A, the activity stated is that of the parent isotope and takes into account the daughters.
Note 2: For purposes of § 30.14 where there is involved a combination of isotopes, the limit for the combination should 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 Schedule A 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 | + | Concentration of Isotope B in Product | ≤ 1 |
| Exempt concentration of Isotope A | Exempt concentration of Isotope B |
Cite this article: FindLaw.com - Code of Federal Regulations Title 10. Energy § 10.30.70 Schedule A—Exempt concentrations - last updated October 02, 2022 | https://codes.findlaw.com/cfr/title-10-energy/cfr-sect-10-30-70/
Read this complete Code of Federal Regulations Title 10. Energy § 10.30.70 Schedule A—Exempt concentrations on Westlaw. Westlaw subscription required.
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