Appendix A -- Exempt Concentrations

Element (Atomic Number) Isotope Column I Gas Concentration :Ci/ml 1/ Column II Liquid and solid concentration :Ci/ml 2/ 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 3X10 -7 -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 8X10 -6 -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 4X10 -7 -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 Element (Atomic Number) Isotope Column I Gas Concentration :Ci/ml 1/ Column II Liquid and solid concentration :Ci/ml 2/ Europium (63) Eu-152/ (9.2h) Eu-155 6X10-4 2X10-3 Fluorine (9) F-18 2X10 8X10 -6 -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 3X10 -6 -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 Element (Atomic Number) Isotope Column I Gas Concentration :Ci/ml 1/ Column II Liquid and solid concentration :Ci/ml 2/ 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 Phosphorus (15) P-32 P-33 2X10-4 1X10-3 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-105 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 6X10 -8 -4 Tantalum (73) Ta-182 4X10-4 Technetium (43) Tc-96m Tc-96 1X10-1 1X10-3 Element (Atomic Number) Isotope Column I Gas Concentration :Ci/ml 1/ Column II Liquid and solid concentration :Ci/ml 2/ 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 and/or gamma emitting radioactive material not listed above with half-life of less than three years. 1X10 1X10 -10 -6 105 CMR: DEPARTMENT OF PUBLIC HEALTH Note 1: Many radioisotopes transform into isotopes which are also radioactive. In expressing the concentrations in 105 CMR 120.195: Appendix A, the activity stated is that of the parent isotope and takes into account the daughters. Note 2: For purposes of 105 CMR 120.104(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 radioactivity concentration present in the product and the exempt radioactivity concentration established in