Code of Maine Rules
10 - DEPARTMENT OF HEALTH AND HUMAN SERVICES
144 - DEPARTMENT OF HEALTH AND HUMAN SERVICES - GENERAL
Chapter 220 - Rules Relating to Radiation Protection
Part C - LICENSING OF RADIOACTIVE MATERIAL
Schedule A - EXEMPT CONCENTRATIONS OF RADIOACTIVE MATERIALS WHICH ARE INTRODUCED INTO PRODUCTS (PART C.3.A)
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Column I |
Column I |
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|
Element (atomic number) |
Isotope |
Gas Concentration µCi/ml11 |
Liquid and Solid Concentration µCi/ml12 |
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Antimony (51) |
Sb-122 |
3X10-4 |
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|
Sb-124 |
2X10-4 |
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Sb-125 |
1X10-3 |
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Argon (18) |
Ar-37 |
1X10-3 |
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Ar-41 |
4X10-7 |
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Arsenic (33) |
As-73 |
5X10-3 |
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As-74 |
5X10-4 |
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As-76 |
2X10-4 |
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As-77 |
8X10-4 |
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Barium (56) |
Ba-131 |
2X10-3 |
|
|
Ba-140 |
3X10-4 |
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Beryllium (4) |
Be-7 |
2X10-2 |
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Bismuth (83) |
Bi-206 |
4X10-4 |
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Bromine (35) |
Br-82 |
4X10-7 |
3X10-3 |
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Cadmium (48) |
Cd-109 |
2X10-3 |
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Cd-115m |
3X10-4 |
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Cd-115 |
3X10-4 |
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Calcium (20) |
Ca-45 |
9X10-5 |
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Ca-47 |
5X10-4 |
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Carbon (6) |
C-14 |
1X10-6 |
8X10-3 |
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Cerium (58) |
Ce-141 |
9X10-4 |
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|
Ce-143 |
4X10-4 |
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Ce-144 |
1X10-4 |
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Cesium (55) |
Cs-131 |
2X10-2 |
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Cs-134m |
6X10-2 |
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Cs-134 |
9X10-5 |
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Chlorine (17) |
Cl-38 |
9X10-7 |
4X10-3 |
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Chromium (24) |
Cr-51 |
2X10-2 |
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Cobalt (27) |
Co-57 |
5X10-3 |
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Co-58 |
1X10-3 |
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Co-60 |
5X10-4 |
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Copper (29) |
Cu-64 |
3X10-3 |
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Dysprosium (66) |
Dy-165 |
4X10-3 |
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Dy-166 |
4X10-4 |
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Erbium (68) |
Er-169 |
9X10-4 |
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|
Er-171 |
1X10-3 |
11 Values are given in Column I only for those materials normally used as gases.
12 µCi/gm for solids.
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Column I |
Column II |
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|
Element (atomic number) |
Isotope |
Gas Concentration µCi/ml13 |
Liquid and Solid Concentration µCi/ml14 |
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Europium (63) |
Eu-152 |
6X10-4 |
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|
(Tr=9.2 hr) |
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Eu-155 |
2X10-3 |
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Fluorine (9) |
F-18 |
2X10-6 |
8X10-3 |
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Gadolinium (64) |
Gd-153 |
2X10-3 |
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Gd-159 |
8X10-4 |
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Gallium (31) |
Ga-72 |
4X10-4 |
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Germanium (32) |
Ge-71 |
2X10-2 |
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Gold (79) |
Au-196 |
2X10-3 |
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Au-198 |
5X10-4 |
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|
Au-199 |
2X10-3 |
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Hafnium (72) |
Hf-181 |
7X10-4 |
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Hydrogen (1) |
H-3 |
5X10-6 |
3X10-2 |
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Indium (49) |
In-113m |
1X10-2 |
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|
In-114m |
2X10-4 |
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Iodine (53) |
I-126 |
3X10-9 |
2X10-5 |
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I-131 |
3X10-9 |
2X10-5 |
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|
I-132 |
8X10-8 |
6X10-4 |
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|
I-133 |
1X10-8 |
7X10-5 |
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|
I-134 |
2X10-7 |
1X10-3 |
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Iridium (77) |
Ir-190 |
2X10-3 |
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|
Ir-192 |
4X10-4 |
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Ir-194 |
3X10-4 |
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Iron (26) |
Fe-55 |
8X10-3 |
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Fe-59 |
6X10-4 |
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Krypton (36) |
Kr-85m |
1X10-6 |
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Kr-85 |
3X10-6 |
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Lanthanum (57) |
La-140 |
2X10-4 |
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Lead (82) |
Pb-203 |
4X10-3 |
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Lutetium (71) |
Lu-177 |
1X10-3 |
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Manganese (25) |
Mn-52 |
3X10-4 |
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Mn-54 |
1X10-3 |
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Mn-56 |
1X10-3 |
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Mercury (80) |
Hg-197m |
2X10-3 |
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Hg-197 |
3X10-3 |
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Hg-203 |
2X10-4 |
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Molybdenum (42) |
Mo-99 |
2X10-3 |
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Neodymium (60) |
Nd-147 |
6X10-4 |
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Nd-149 |
3X10-3 |
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Nickel (28) |
Ni-65 |
1X10-3 |
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Niobium (Columbium) (41) |
Nb-95 |
1X10-3 |
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|
Nb-97 |
9X10-3 |
13 Values are given in Column I only for those materials normally used as gases.
14 µCi/gm for solids.
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Column I |
Column II |
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|
Element (atomic number) |
Isotope |
Gas Concentration µCi/ml15 |
Liquid and Solid Concentration µCi/ml16 |
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Osmium (76) |
Os-185 |
7X10-4 |
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|
Os-191m |
3X10-2 |
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Os-191 |
2X10-3 |
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Os-193 |
6X10-4 |
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Palladium (46) |
Pd-103 |
3X10-3 |
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Pd-109 |
9X10-4 |
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Phosphorus (15) |
P-32 |
2X10-4 |
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Platinum (78) |
Pt-191 |
1X10-3 |
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Pt-193m |
1X10-2 |
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Pt-197m |
1X10-2 |
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Pt-197 |
1X10-3 |
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Potassium (19) |
K-42 |
3X10-3 |
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Praseodymium (59) |
Pr-142 |
3X10-4 |
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Pr-143 |
5X10-4 |
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Promethium (61) |
Pm-147 |
2X10-3 |
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Pm-149 |
4X10-4 |
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Rhenium (75) |
Re-183 |
6X10-3 |
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Re-186 |
9X10-4 |
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Re-188 |
6X10-4 |
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Rhodium (45) |
Rh-103m |
1X10-1 |
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Rh-105 |
1X10-3 |
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Rubidium (37) |
Rb-86 |
7X10-4 |
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Ruthenium (44) |
Ru-97 |
4X10-3 |
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Ru-103 |
8X10-4 |
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Ru-105 |
1X10-3 |
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Ru-106 |
1X10-4 |
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Samarium (62) |
Sm-153 |
8X10-4 |
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Scandium (21) |
Sc-46 |
4X10-4 |
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Sc-47 |
9X10-4 |
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Sc-48 |
3X10-4 |
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Selenium (34) |
Se-75 |
3X10-3 |
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Silicon (14) |
Si-31 |
9X10-3 |
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Silver (47) |
Ag-105 |
1X10-3 |
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Ag-110m |
3X10-4 |
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Ag-111 |
4X10-4 |
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Sodium (11) |
Na-24 |
2X10-3 |
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Strontium (38) |
Sr-85 |
1X10-3 |
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Sr-91 |
7X10-4 |
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Sr-92 |
7X10-4 |
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Sulfur (16) |
S-35 |
9X10-8 |
6X10-4 |
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Tantalum (73) |
Ta-182 |
4X10-4 |
15 Values are given in Column I only for those materials normally used as gases.
16 µCi/gm for solids.
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Column I |
Column II |
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|
Element (atomic number) |
Isotope |
Gas Concentration µCi/ml17 |
Liquid and Solid Concentration µCi/ml18 |
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Technetium (43) |
Tc-96m |
1X10-1 |
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Sr-89 |
1X10-4 |
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Tc-96 |
1X10-3 |
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Tellurium (52) |
Te-125m |
2X10-3 |
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Te-127m |
6X10-4 |
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Te-127 |
3X10-3 |
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Te-129m |
3X10-4 |
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Te-131m |
6X10-4 |
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Te-132 |
3X10-4 |
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Terbium (65) |
Tb-160 |
4X10-4 |
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Thallium (81) |
Tl-200 |
4X10-3 |
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Tl-201 |
3X10-3 |
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Tl-202 |
1X10-3 |
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Tl-204 |
1X10-3 |
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Thulium (69) |
Tm-170 |
5X10-4 |
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Tm-171 |
5X10-3 |
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Tin (50) |
Sn-113 |
9X10-4 |
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Sn-125 |
2X10-4 |
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Tungsten (Wolfram) (74) |
W-181 |
4X10-3 |
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W-187 |
7X10-4 |
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Vanadium (23) |
V-48 |
3X10-4 |
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Xenon (54) |
Xe-131m |
4X10-6 |
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Xe-133 |
3X10-6 |
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Xe-135 |
1X10-6 |
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Ytterbium (70) |
Yb-175 |
1X10-3 |
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Yttrium (39) |
Y-90 |
2X10-4 |
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Y-91m |
3X10-2 |
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Y-91 |
3X10-4 |
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Y-92 |
6X10-4 |
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Y-93 |
3X10-4 |
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Zinc (30) |
Zn-65 |
1X10-3 |
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Zn-69m |
7X10-4 |
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Zn-69 |
2X10-2 |
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Zirconium (40) |
Zr-95 |
6X10-4 |
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Zr-97 |
2X10-4 |
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Beta and/or gamma emitting radioactive material not listed above with half-life fewer than three years |
1X10-10 |
1X10-6 |
17 Values are given in Column I only for those materials normally used as gases.
18 Ci/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 Part C 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 Schedule A for the specific isotope when not in combination. The sum of such ratios may not exceed "1" ((i)e., unity).
EXAMPLE:
NOTE 3: To convert µCi/ml to SI units of megabecquerels per liter multiply the above values by 37.
