12 Va. Admin. Code § 5-481-3720
Current through Register Vol. 41, No. 9, December 16, 2024
| Element (atomic number) | Isotope | Col. I | Col. II |
| Gas Concentration [MICRO]Ci/ml1 | Liquid and Solid Concentration [MICRO]Ci/ml2 | ||
| Antimony (51) | Sb-122 | 3 x 10-4 | |
| Sb-124 | 2 x 10-4 | ||
| Sb-125 | 1 x 10-3 | ||
| Argon (18) | A-37 | 1 x 10-3 | |
| A-41 | 4 x 10-7 | ||
| Arsenic (33) | As-73 | 5 x 10-3 | |
| As-74 | 5 x 10-4 | ||
| As-76 | 2 x 10-4 | ||
| As-77 | 8 x 10-4 | ||
| Barium (56) | Ba-131 | 2 x 10-3 | |
| Ba-140 | 3 x 10-4 | ||
| Beryllium (4) | Be-7 | 2 x 10-2 | |
| Bismuth (83) | Bi-206 | 4 x 10-4 | |
| Bromine (35) | Br-82 | 4 x 10-7 | 3 x 10-3 |
| Cadmium (48) | Cd-109 | 2 x 10-3 | |
| Cd-115M | 3 x 10-4 | ||
| Cd-115 | 3 x 10-4 | ||
| Calcium (20) | Ca-45 | 9 x 10-5 | |
| Ca-47 | 5 x 10-4 | ||
| Carbon (6) | C-14 | 1 x 10-6 | 8 x 10-3 |
| Cerium (58) | Ce-141 | 9 x 10-4 | |
| Ce-143 | 4 x 10-4 | ||
| Ce-144 | 1 x 10-4 | ||
| Cesium (55) | Cs-131 | 2 x 10-2 | |
| Cs-134m | 6 x 10-2 | ||
| Cs-134 | 9 x 10-5 | ||
| Chlorine (17) | Cl-38 | 9 x 10-7 | 4 x 10-3 |
| Chromium (24) | Cr-51 | 2 x 10-2 | |
| Cobalt (27) | Co-57 | 5 x 10-3 | |
| Co-58 | 1 x 10-3 | ||
| Co-60 | 5 x 10-4 | ||
| Copper (29) | Cu-64 | 3 x 10-3 | |
| Dysprosium (66) | Dy-165 | 4 x 10-3 | |
| Dy-166 | 4 x 10-4 | ||
| Erbium (68) | Er-169 | 9 x 10-4 | |
| Er-171 | 1 x 10-3 | ||
| Europium (63) | Eu-152 (9.2 hrs) | 6 x 10-4 | |
| Eu-155 | 2 x 10-3 | ||
| Fluorine (9) | F-18 | 2 x 10-6 | 8 x 10-3 |
| Gadolinium (64) | Gd-153 | 2 x 10-3 | |
| Gd-159 | 8 x `0-4 | ||
| Gallium (31) | Ga-72 | 4 x 10-4 | |
| Germanium (32) | Ge-71 | 2 x 10-2 | |
| Gold (79) | Au-196 | 2 x 10-3 | |
| Au-198 | 5 x 10-4 | ||
| Au-199 | 2 x 10-3 | ||
| Hafnium (72) | Hf-81 | 7 x 10-4 | |
| Hydrogen (1) | H-3 | 5 x 10-6 | 3 x 10-2 |
| Indium (49) | In-113M | 1 x 10-2 | |
| In-114M | 2 x 10-4 | ||
| Iodine (53) | I-126 | 3 x 10-9 | 2 x 10-5 |
| I-131 | 3 x 10-9 | 2 x 10-5 | |
| I-132 | 8 x 10-8 | 6 x 10-4 | |
| I-133 | 1 x 10-8 | 7 x 10-5 | |
| I-134 | 2 x 10-7 | 1 x 10-3 | |
| Iridium (77) | Ir-190 | 2 x 10-3 | |
| Ir-192 | 4 x 10-4 | ||
| Ir-194 | 3 x 10-4 | ||
| Iron (26) | Fe-55 | 8 x 10-3 | |
| Fe-59 | 6 x 10-4 | ||
| Krypton (36) | Kr-85M | 1 x 10-6 | |
| Kr-85 | 3 x 10-6 | ||
| Lanthanum (57) | La-140 | 2 x 10-4 | |
| Lead (82) | Pb-203 | 4 x 10-3 | |
| Lutetium (71) | Lu-177 | 1 x 10-3 | |
| Manganese (25) | Mn-52 | 3 x 10-4 | |
| Mn-54 | 1 x 10-3 | ||
| Mn-56 | 1 x 10-3 | ||
| Mercury (80) | Hg-197M | 2 x 10-3 | |
| Hg-197 | 3 x 10-3 | ||
| Hg-203 | 2 x 10-4 | ||
| Molybdenum (42) | Mo-99 | 2 x 10-3 | |
| Neodymium (60) | Nd-147 | 6 x 10-4 | |
| Nd-149 | 3 x 10-3 | ||
| Nickel (28) | Ni-65 | 1 x 10-3 | |
| Niobium (Columbium) (41) | Nb-95 | 1 x 10-3 | |
| Nb-97 | 9 x 10-3 | ||
| Osmium (76) | Os-185 | 7 x 10-4 | |
| Os-191M | 3 x 10-2 | ||
| Os-191 | 2 x 10-3 | ||
| Os-193 | 6 x 10-4 | ||
| Palladium (46) | Pd-103 | 3 x 10-3 | |
| Pd-109 | 9 x 10-4 | ||
| Phosphorus (15) | P-32 | 2 x 10-4 | |
| Platinum (78) | Pt-191 | 1 x 10-3 | |
| Pt-193M | 1 x 10-2 | ||
| Pt-197M | 1 x 10-2 | ||
| Pt-197 | 1 x 10-3 | ||
| Potassium (19) | K-42 | 3 x 10-3 | |
| Praseodymium (59) | Pr-142 | 3 x 10-4 | |
| Pr-143 | 5 x 10-4 | ||
| Promethium (61) | Pm-147 | 2 x 10-3 | |
| Pm-149 | 4 x 10-4 | ||
| Rhenium (75) | Re-183 | 6 x 10-3 | |
| Re-186 | 9 x 10-4 | ||
| Re-188 | 6 x 10-4 | ||
| Rhodium (45) | Rh-103M | 1 x 10-1 | |
| Rh-105 | 1 x 10-3 | ||
| Rubidium (37) | Rb-86 | 7 x 10-4 | |
| Ruthenium (44) | Ru-97 | 4 x 10-4 | |
| Ru-103 | 8 x 10-4 | ||
| Ru-105 | 1 x 10-3 | ||
| Ru-106 | 1 x 10-4 | ||
| Samarium (62) | Sm-153 | 8 x 10-4 | |
| Scandium (21) | Sc-46 | 4 x 10-4 | |
| Sc-47 | 9 x 10-4 | ||
| Sc-48 | 3 x 10-4 | ||
| Selenium (34) | Se-75 | 3 x 10-3 | |
| Silicon (14) | Si-31 | 9 x 10-3 | |
| Silver (47) | Ag-105 | 1 x 10-3 | |
| Ag-110M | 3 x 10-4 | ||
| Ag-111 | 4 x 10-4 | ||
| Sodium (11) | Na-24 | 2 x 10-3 | |
| Strontium (38) | Sr-85 | 1 x 10-4 | |
| Sr-89 | 1 x 10-4 | ||
| Sr-91 | 7 x 10-4 | ||
| Sr-92 | 7 x 10-4 | ||
| Sulfur (16) | S-35 | 9 x 10-8 | 6 x 10-4 |
| Tantalum (73) | Ta-182 | 4 x 10-4 | |
| Technetium (43) | Tc-96M Tc-96 | 1 x 10-1 1 x 10-3 | |
| Tellurium (52) | Te-125M | 2 x 10-3 | |
| Te-125M | 6 x 10-4 | ||
| Te-127 | 3 x 10-3 | ||
| Te-129M | 3 x 10-4 | ||
| Te-131M | 6 x 10-4 | ||
| Te-132 | 3 x 10-4 | ||
| Terbium (65) | Tb-160 | 4 x 10-4 | |
| Thallium (81) | Tl-200 Tl-201 Tl-202 Tl-204 | 4 x 10-3 3 x 10-3 1 x 10-3 1 x 10-3 | |
| Thulium (69) | Tm-170 Tm-171 | 5 x 10-4 5 x 10-3 | |
| Tin (50) | Sn-113 Sn-125 | 9 x 10-4 2 x 10-4 | |
| Tungsten (Wolfram) (74) | W-181 W-187 | 4 x 10-3 7 x 10-4 | |
| Vanadium (23) | V-48 | 3 x 10-4 | |
| Xenon (54) | Xe-131M | 4 x 10-6 | |
| Xe-133 | 3 x 10-6 | ||
| Xe-135 | 1 x 10-6 | ||
| Ytterbium (70) | Yb-175 | 1 x 10-3 | |
| Yttrium (39) | Y-90 | 2 x 10-4 | |
| Y-91M | 3 x 10-2 | ||
| Y-91 | 3 x 10-4 | ||
| Y-92 | 6 x 10-4 | ||
| Y-93 | 3 x 10-4 | ||
| Zinc (30) | Zn-65 | 1 x 10-3 | |
| Zn-69M | 7 x 10-4 | ||
| Zn-69 | 2 x 10-2 | ||
| Zirconium (40) | Zr-95 | 6 x 10-4 | |
| Zr-97 | 2 x 10-4 | ||
| Beta and/or gamma emitting radioactive material not listed above with half-life less than three years | 1 x 10-10 | 1 x 10-6 |
Footnotes:
1Values are given only for those materials normally used as gases.
2[MICRO]Ci/gm for solids.
NOTE 1: Many radioisotopes disintegrate into isotopes that are also radioactive. In expressing the concentrations, the activity stated is that of the parent isotope and takes into account the daughters.
NOTE 2: For purposes of 12VAC5-481-400 A 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 for the specific isotope when not in combination. The sum of such ratios may not exceed "1" (i.e., unity).
Example:
12 Va. Admin. Code § 5-481-3720
Statutory Authority
§ 32.1-229 of the Code of Virginia.