Ind. Admin. Code tit. 410, r. 5-3-26 – Schedule of exempt concentrations

Authority: IC 16-41-35-26; IC 16-41-35-29

Sec. 26. NOTE 1: Many radioisotopes transform 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 410 IAC 5-3-4 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". NOTE 3: To convert μCi/ml to SI units of megabecquerels per liter multiply the above values by 37. EXAMPLE: Zirconium (40) Zr-97 (2×10^-4 μCi/ml multiplied by 37 is equivalent to 74×10^-4 MB/q/l).

SCHEDULE A
EXEMPT CONCENTRATIONS
Element (atomic number)	Isotope	Column I Gas concentration μCi/ml^1/	Column II Liquid and solid concentration μCi/ml^2/
Antimony (51)	Sb-122		3x10^-4
	Sb-124		2x10^-4
	Sb-125		1x10^-3
Argon (18)	Ar-37	1x10^-3
	Ar-41	4x10^-7
Arsenic (33)	As-73		5x10^-3
	As-74		5x10^-4
	As-76		2x10^-4
	As-77		8x10^-4
Barium (56)	Ba-131		2x10^-3
	Ba-140		3x10^-4
Beryllium (4)	Be-7		2x10^-2
Bismuth (83)	Bi-206		4x10^-4
Bromine (35)	Br-82	4x10^-7	3x10^-3
Cadmium (48)	Cd-109		2x10^-3
	Cd-115m		3x10^-4
	Cd-115		3x10^-4
Calcium (20)	Ca-45		9x10^-5
	Ca-47		5x10^-4
Carbon (6)	C-14	1x10^-6	8x10^-3
Cerium (58)	Ce-141		9x10^-4
	Ce-143		4x10^-4
	Ce-144		1x10^-4
Cesium (55)	Cs-131		2x10^-2
	Cs-134m		6x10^-2
	Cs-134		9x10^-5
Chlorine (17)	Cl-38	9x10^-7	4x10^-3
Chromium (24)	Cr-51		2x10^-2
Cobalt (27)	Co-57		5x10^-3
	Co-58		1x10^-3
	Co-60		5x10^-4
Copper (29)	Cu-64		3x10^-3
Dysprosium (66)	Dy-165		4x10^-3
	Dy-166		4x10^-4
Erbium (68)	Er-169		9x10^-4
	Er-171		1x10^-3
Europium (63)	Eu-152		6x10^-4
	(T_r=9.2 h)
	Eu-155		2x10^-3
Fluorine (9)	F-18	2x10^-6	8x10^-3
Gadolinium (64)	Gd-153		2x10^-3
	Gd-159		8x10^-4
Gallium (31)	Ga-72		4x10^-4
Germanium (32)	Ge-71		2x10^-2
Gold (79)	Au-196		2x10^-3
	Au-198		5x10^-4
	Au-199		2x10^-3
Hafnium (72)	Hf-181		7x10^-4
Hydrogen (1)	H-3	5x10^-6	3x10^-2
Indium (49)	In-113m		1x10^-2
	In-114m		2x10^-4
Iodine (53)	I-126	3x10^-9	2x10^-5
	I-131	3x10^-9	2x10^-5
	I-132	8x10^-8	6x10^-4
	I-133	1x10^-8	7x10^-5
	I-134	2x10^-7	1x10^-3
Iridium (77)	Ir-190		2x10^-3
	Ir-192		4x10^-4
	Ir-194		3x10^-4
Iron (26)	Fe-55		8x10^-3
	Fe-59		6x10^-4
Krypton (36)	Kr-85m	1x10^-6
	Kr-85	3x10^-6
Lanthanum (57)	La-140		2x10^-4
Lead (82)	Pb-203		4x10^-3
Lutetium (71)	Lu-177		1x10^-3
Manganese (25)	Mn-52		3x10^-4
	Mn-54		1x10^-3
	Mn-56		1x10^-3
Mercury (80)	Hg-197m		2x10^-3
	Hg-197		3x10^-3
	Hg-203		2x10^-4
Molybdenum (42)	Mo-99		2x10^-3
Neodymium (60)	Nd-147		6x10^-4
	Nd-149		3x10^-3
Nickel (28)	Ni-65		1x10^-3
Niobium	Nb-95		1x10^-3
(Columbium) (41)	Nb-97		9x10^-3
Osmium (76)	Os-185		7x10^-4
	Os-191m		3x10^-2
	Os-191		2x10^-3
	Os-193		6x10^-4
Palladium (46)	Pd-103		3x10^-3
	Pd-109		9x10^-4
Phosphorus (15)	P-32		2x10^-4
Platinum (78)	Pt-191		1x10^-3
	Pt-193m		1x10^-2
	Pt-197m		1x10^-2
	Pt-197		1x10^-3
Potassium (19)	K-42		3x10^-3
Praseodymium (59)	Pr-142		3x10^-4
	Pr-143		5x10^-4
Promethium (61)	Pm-147		2x10^-3
	Pm-149		4x10^-4
Rhenium (75)	Re-183		6x10^-3
	Re-186		9x10^-4
	Re-188		6x10^-4
Rhodium (45)	Rh-103m		1x10^-1
	Rh-105		1x10^-3
Rubidium (37)	Rb-86		7x10^-4
Ruthenium (44)	Ru-97		4x10^-3
	Ru-103		8x10^-4
	Ru-105		1x10^-3
	Ru-106		1x10^-4
Samarium (62)	Sm-153		8x10^-4
Scandium (21)	Sc-46		4x10^-4
	Sc-47		9x10^-4
	Sc-48		3x10^-4
Selenium (34)	Se-75		3x10^-3
Silicon (14)	Si-31		9x10^-3
Silver (47)	Ag-105		1x10^-3
	Ag-110m		3x10^-4
	Ag-111		4x10^-4
Sodium (11)	Na-24		2x10^-3
Strontium (38)	Sr-85		1x10^-3
	Sr-89		1x10^-4
	Sr-91		7x10^-4
	Sr-92		7x10^-4
Sulfur (16)	S-35	9x10^-8	6x10^-4
Tantalum (73)	Ta-182		4x10^-4
Technetium (43)	Tc-96m		1x10^-1
	Tc-96		1x10^-3
Tellurium (52)	Te-125m		2x10^-3
	Te-127m		6x10^-4
	Te-127		3x10^-3
	Te-129m		3x10^-4
	Te-131m		6x10^-4
	Te-132		3x10^-4
Terbium (65)	Tb-160		4x10^-4
Thallium (81)	Tl-200		4x10^-3
	Tl-201		3x10^-3
	Tl-202		1x10^-3
	Tl-204		1x10^-3
Thulium (69)	Tm-170		5x10^-4
	Tm-171		5x10^-3
Tin (50)	Sn-113		9x10^-4
	Sn-125		2x10^-4
Tungsten	W-181		4x10^-3
(Wolfram) (74)	W-187		7x10^-4
Vanadium (23)	V-48		3x10^-4
Xenon (54)	Xe-131m	4x10^-6
	Xe-133	3x10^-6
	Xe-135	1x10^-6
Ytterbium (70)	Yb-175		1x10^-3
Yttrium (39)	Y-90		2x10^-4
	Y-91m		3x10^-2
	Y-91		3x10^-4
	Y-92		6x10^-4
	Y-93		3x10^-4
Zinc (30)	Zn-65		1x10^-3
	Zn-69m		7x10^-4
	Zn-69		2x10^-2
Zirconium (40)	Zr-95		6x10^-4
	Zr-97		2x10^-4
Beta and/or gamma emitting radioactive material not listed above with half-life of less than 3 years.		1x10^-10	1x10^-6
^1/Values are given in Column I only for those materials normally used as gases.
^2/μCi/g are for solids.

EXAMPLE:
Concentration of Isotope A in Product	+
Exempt concentration of Isotope A

Concentration of Isotope B in Product	<1
Exempt concentration of Isotope B

(Indiana Department of Health; Rule HRH-2,PT C,Schedule A; filed May 26, 1978, 3:30 pm: 1 IR 168; filed Feb 29, 1984, 10:10 am: 7 IR 881; readopted filed Jul 11, 2001, 2:23 p.m.: 24 IR 4234; readopted filed May 22, 2007, 1:44 p.m.: 20070613-IR-410070141RFA; readopted filed Sep 11, 2013, 3:19 p.m.: 20131009-IR-410130346RFA; readopted filed Nov 13, 2019, 3:14 p.m.: 20191211-IR-410190391RFA; readopted filed Nov 14, 2025, 11:18 a.m.: 20251210-IR-410240588RFA)