12 Va. Admin. Code § 5-481-3750 – Quantities for use with decommissioning.

	Materials	Microcuries
	Americium-241	.01
	Antimony-122	100
	Antimony-124	10
	Antimony-125	10
	Arsenic-73	100
	Arsenic-74	10
	Arsenic-76	10
	Arsenic-77	100
	Barium-131	10
	Barium-133	10
	Barium-140	10
	Bismuth-210	1
	Bromine-82	10
	Cadmium-109	10
	Cadmium-115m	10
	Cadmium-115	100
	Calcium-45	10
	Calcium-47	10
	Carbon-14	100
	Cerium-141	100
	Cerium-143	100
	Cerium-144	1
	Cesium-131	1,000
	Cesium-134m	100
	Cesium-134	1
	Cesium-135	10
	Cesium-136	10
	Cesium-137	10
	Chlorine-36	10
	Chlorine-38	10
	Chromium-51	1,000
	Cobalt-55	100
	Cobalt-56	10
	Cobalt-57	100
	Cobalt-58m	10
	Cobalt-58	10
	Cobalt-60	1
	Copper-64	100
	Dysprosium-165	10
	Dysprosium-166	100
	Erbium-169	100
	Erbium-171	100
	Europium-152 9.2h	100
	Europium-152 13 yr	1
	Europium-154	1
	Europium-155	10
	Fluorine-18	1,000
	Gadolinium-153	10
	Gadolinium-159	100
	Gallium-72	10
	Germanium-71	100
	Gold-198	100
	Gold-199	100
	Hafnium-181	10
	Holmium-166	100
	Hydrogen-3	1,000
	Indium-113m	100
	Indium-114m	10
	Indium-115m	100
	Indium-115	10
	Iodine-125	1
	Iodine-126	1
	Iodine-129	0.1
	Iodine-131	1
	Iodine-132	10
	Iodine-133	1
	Iodine-134	10
	Iodine-135	10
	Iridium-192	10
	Iridium-194	100
	Iron-55	100
	Iron-59	10
	Krypton-85	100
	Krpton-87	10
	Lanthanum-140	10
	Lutetium-177	100
	Manganese-52	10
	Manganese-54	10
	Manganese-56	10
	Mercury-197m	100
	Mercury-197	100
	Mercury-203	10
	Molbdenum-99	100
	Neodymium-147	100
	Neodymium-149	100
	Nickel-59	100
	Nickel-63	10
	Nickel-65	100
	Niobium-93m	10
	Niobium-95	10
	Niobium-97	10
	Osmium-185	10
	Osmium-191m	100
	Osmium-191	100
	Osmium-193	100
	Palladium-103	100
	Palladium-109	100
	Phosphorus-32	10
	Platinum-191	100
	Platinum-193m	100
	Platinum-193	100
	Platinum-197m	100
	Platinum-197	100
	Plutonium-239	.01
	Polonium-210	0.1
	Potassium-42	10
	Praseodymium-142	100
	Praseodymium-143	100
	Promethium-147	10
	Promethium-149	10
	Radium-226	.01
	Rhenium-186	100
	Rhenium-188	100
	Rhodium-103m	100
	Rhodium-105	100
	Rubidium-86	10
	Rubidium-87	10
	Ruthenium-97	100
	Ruthenium-103	10
	Ruthenium-105	10
	Ruthenium-106	1
	Samarium-151	10
	Samarium-153	100
	Scandium-46	10
	Scandium-47	100
	Scandium-48	10
	Seleium-75	10
	Silicon-31	100
	Silver-105	10
	Silver-110m	1
	Silver-111	100
	Sodium-24	10
	Strontium-85	10
	Strontium-89	1
	Strontium-90	0.1
	Strontium-91	10
	Strontium-92	10
	Sulphur-35	100
	Tantalum-182	10
	Technetium-96	10
	Technetium-97m	100
	Technetium-97	100
	Technetium-99m	100
	Technetium-99	10
	Tellurium-125m	10
	Tellurium127m	10
	Tellurium-127	100
	Tellurium129m	10
	Tellurium-129	100
	Tellurium-131m	10
	Tellurium-132	10
	Terbium-160	10
	Thallium-200	100
	Thallium-201	100
	Thallium-202	100
	Thallium-204	10
	Throium (natural)¹	100
	Thulium-170	10
	Thulium-171	10
	Tin-113	10
	Tin-125	10
	Tungsten-181	10
	Tungsten-185	10
	Tungsten-187	100
	Uranium (natural)²	100
	Uranium-233	.01
	Uranium-234--Uranium-235	.01
	Vandium-48	10
	Xenon-131m	1,000
	Xenon-133	100
	Xenon-135	100
	Ytterbium-175	100
	Yttrium-90	10
	Yttrium-91	10
	Yttrium-92	100
	Yttrium-93	100
	Zinc-65	10
	Zinc-69m	100
	Zinc-69	1,000
	Zirconium-93	10
	Zirconium-95	10
	Zirconium-97	10
	Any alpha emitting radionuclide not listed above or mixtures of alpha emitters of unknown composition	.01
	Any radionuclide other than alpha emitting radio-nuclides, not listed above or mixtures of beta emitters of unknown composition	.1
	¹Based on alpha disintegration rate of Th-232, Th-230, and their daughter products. ²Based on alpha disintegration rate of U-238, U-234, and U-235.

Note: For purposes of 12VAC5-481-930, where there is involved a combination of isotopes in known amounts, the limit for the combination should be derived as follows: Determine, for each isotope in the combination, the ratio between the quantity present in the combination and the limit otherwise established for the specific isotope when not in combination. The sum of such ratios for all the isotopes in the combination may not exceed "1" (i.e., "unity").

Statutory Authority

§ 32.1-229 of the Code of Virginia.

Historical Notes

Derived from Virginia Register Volume 24, Issue 18, eff. June 12, 2008; amended, Virginia Register Volume 32, Issue 24, eff. August 25, 2016.