Neptunium-237 0.001
Neptunium-238 10
Neptunium-239 100
Neptunium-240 1,000
Plutonium-234 10
Plutonium-235 1,000
Plutonium-236 0.001
Plutonium-237 100
Plutonium-238 0.001
Plutonium-239 0.001
Plutonium-240 0.001
Plutonium-241 0.01
Plutonium-242 0.001
Plutonium-243 1,000
Plutonium-244 0.001
Plutonium-245 100
Americium-237 1,000
Americium-238 100
Americium-239 1,000
Americium-240 100
Americium-241 0.001
Americium-242m 0.001
Americium-242 10
Americium-243 0.001
Americium-244m 100
Americium-244 10
Americium-245 1,000
Americium-246m 1,000
Americium-246 1,000
Curium-238 100
Curium-240 0.1
Curium-241 1
Radionuclide Microcuries Radionuclide Microcuries
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Curium-242 0.01
Curium-243 0.001
Curium-244 0.001
Curium-245 0.001
Curium-246 0.001
Curium-247 0.001
Curium-248 0.001
Curium-249 1,000
Berkelium-245 100
Berkelium-246 100
Berkelium-247 0.001
Berkelium-249 0.1
Berkelium-250 10
Californium-244 100
Californium-246 1
Californium-248 0.01
Californium-249 0.001
Californium-250 0.001
Californium-251 0.001
Californium-252 0.001
Californium-253 0.1
Californium-254 0.001
Einsteinium-250 100
Einsteinium-251 100
Einsteinium-253 0.1
Einsteinium-254m 1
Einsteinium-254 0.01
Fermium-252 1
Fermium-253 1
Fermium-254 10
Fermium-255 1
Fermium-257 0.01
Mendelevium-257 10
Mendelevium-258 0.01
Any alpha-emitting radionuclide not listed above or mixtures
of alpha emitters of unknown composition 0.001
Any radionuclide other than alpha-emitting radionuclides not listed
above, or mixtures of beta emitters of unknown composition 0.01
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Note: For purposes of s. DHS 157.29 (2) (e), (5) (a) and s. DHS 157.32 (1) (a) where there is involved a combination of radionuclides in known amounts, the limit for the combination shall be derived as follows: determine, for each radionuclide in the combination, the ratio between the quantity present in the combination and the limit otherwise established for the specific radionuclide when not in combination. The sum of such ratios for all radionuclides in the combination may not exceed “1” — that is, unity. Note: The quantities listed above were derived by taking 1/10th of the most restrictive ALI listed in Table I, Columns 1 and 2, of Appendix E, rounding to the nearest factor of 10 and constraining the values listed between 37 Bq and 37 MBq (0.001 and 1,000 microcuries). Values of 3.7 MBq (100 microcuries have been assigned for radionuclides having a radioactive half-life in excess of E+9 years, except rhenium, 37 MBq (1,000 microcuries, to take into account their low specific activity.
SECTION 140.
DHS 157 Appendix H is repealed and recreated to read:APPENDIX H
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Classification and Characteristics of Low-level
Radioactive Waste
Section I. — Classification of Radioactive Waste for Land Disposal.
(a) Considerations. Determination of the classification of radioactive waste involves 2 considerations. First, consideration must be given to the concentration of long-lived radionuclides, and their shorter-lived precursors, whose potential hazard will persist long after such precautions as institutional controls, improved waste form, and deeper disposal have ceased to be effective. These precautions delay the time when long-lived radionuclides could cause exposures. In addition, the magnitude of the potential dose is limited by the concentration and availability of the radionuclide at the time of exposure. Second, consideration must be given to the concentration of shorter-lived radionuclides for which requirements on institutional controls, waste form, and disposal methods are effective.
(b) Classes of waste.
(1) Class A waste is waste that is usually segregated from other waste classes at the disposal site. The physical form and characteristics of Class A waste must meet the minimum requirements set forth in Section II (a). If Class A waste also meets the stability requirements set forth in Section II (b), it is not necessary to segregate the waste for disposal.
(2) Class B waste is waste that must meet more rigorous requirements on waste form to ensure stability after disposal. The physical form and characteristics of Class B waste must meet both the minimum and stability requirements set forth in Section II.
