Cal. Code Regs. tit. 17 § 30237

Current through Register 2025 Notice Reg. No. 2, January 10, 2025

Section 30237 - Schedule C. Exempt Concentrations

		*Column I*	*Column II*
*Element (atomic number)*	*Isotope*	*Gas Concentration µCi/ml¹*	*Liquid and Solid Concentration µCi/ml²*
Antimony (51)	Sb 122		3E-4³
	Sb 124		2E-4
	Sb 125		1E-3
Argon (18)	A 37	1E-3
	A 41	4E-7
Arsenic (33)	As 73		5E-3
	As 74		5E-4
	As 76		2E-4
	As 77		8E-4
Barium (56)	Ba 131		2E-3
	Ba 140		3E-4
Beryllium (4)	Be 7		2E-2
Bismuth (83)	Bi 206		4E-4
Bromine (35)	Br 82	4E-7	3E-3
Cadmium (48)	Cd 109		2E-3
	Cd 115M		3E-4
	Cd 115		3E-4
Calcium (20)	Ca 45		9E-5
	Ca 47		5E-4
Carbon (6)	C 14	1E-6	8E-3
Cerium (58)	Ce 141		9E-4
	Ce 143		4E-4
	Ce 144		1E-4
Cesium (55)	Cs 131		2E-2
	Cs 134m		6E-2
	Cs 134		9E-5
Chlorine (17)	Cl 38	9E-7	4E-3
Chromium (24)	Cr 51		2E-2
Cobalt (27)	Co 57		5E-3
	Co 58		1E-3
	Co 60		5E-4
Copper (29)	Cu 64		3E-3
Dysprosium (66)	Dy 165		4E-3
	Dy 166		4E-4
Erbium (68)	Er 169		9E-4
	Er 171		1E-3
Europium (63)	Eu 152 (T/2=9.2 hrs)		6E-4
	Eu 155		2E-3
Fluorine (9)	F 18	2E-6	8E-3
Gadolinium (64)	Gd 153		2E-3
	Gd 159		8E-4
Gallium (31)	Ga 72		4E-4
Germanium (32)	Ge 71		2E-2
Gold (79)	Au 196		2E-3
	Au 198		5E-4
	Au 199		2E-3
Hafnium (72)	Hf 181		7E-4
Hydrogen (1)	H 3	5E-6	3E-2
Indium (49)	In 113M		1E-2
	In 114M		2E-4
Iodine (53)	I 126	3E-9	2E-5
	I 131	3E-9	2E-5
	I 132	8E-8	6E-4
	I 133	1E-8	7E-5
	I 134	2E-7	1E-3
Iridium (77)	Ir 190		2E-3
	Ir 192		4E-4
	Ir 194		3E-4
Iron (26)	Fe 55		8E-3
	Fe 59		6E-4
Krypton (36)	Kr 85M	1E-6
	Kr 85	3E-6
Lanthanum (57)	La 140		2E-4
Lead (82)	Pb 203		4E-3
Lutetium (71)	Lu 177		1E-3
Manganese (25)	Mn 52		3E-4
	Mn 54		1E-3
	Mn 56		1E-3
Mercury (80)	Hg 197M		2E-3
	Hg 197		3E-3
	Hg 203		2E-4
Molybdenum (42)	Mo 99		2E-3
Neodymium (60)	Nd 147		6E-4
	Nd 149		3E-3
Nickel (28)	Ni 65		1E-3
Niobium (Columbium) (41)	Nb 95		1E-3
	Nb 97		9E-3
Osmium (76)	Os 185		7E-4
	Os 191M		3E-2
	Os 191		2E-3
	Os 193		6E-4
Palladium (46)	Pd 103		3E-3
	Pd 109		9E-4
Phosphorus (15)	P 32		2E-4
Platinum (78)	Pt 191		1E-3
	Pt 193M		1E-2
	Pt 197M		1E-2
	Pt 197		1E-3
Polonium (84)	Po 210		7E-4
Potassium (19)	K 42		3E-3
Praseodymium (59)	Pr 142		3E-4
	Pr 143		5E-4
Promethium (61)	Pm 147		2E-3
	Pm 149		4E-4
Radium (88)	Ra 223		1E-7
Radon (86)	Rn 222	1E-8
	Rn 230	1E-7
Rhenium (75)	Re 183		6E-3
	Re 186		9E-4
	Re 188		6E-4
Rhodium (45)	Rh 103M		1E-1
	Rh 105		1E-3
Rubidium (37)	Rb 86		7E-4
Ruthenium (44)	Ru 97		4E-4
	Ru 103		8E-4
	Ru 105		1E-3
	Ru 106		1E-4
Samarium (62)	Sm 153		8E-4
Scandium (21)	Sc 46		4E-4
	Sc 47		9E-4
	Sc 48		3E-4
Selenium (34)	Se 75		3E-3
Silicon (14)	Si 31		9E-3
Silver (47)	Ag 105		1E-3
	Ag 110M		3E-4
	Ag 111		4E-4
Sodium (11)	Na 24		2E-3
Strontium (38)	Sr 85		1E-4
	Sr 89		1E-4
	Sr 91		7E-4
	Sr 92		7E-4
Sulfur (16)	S 35	9E-8	6E-4
Tantalum (73)	Ta 182		4E-4
Technetium (43)	Tc 96M		1E-1
	Tc 96		1E-3
Tellurium (52)	Te 125M		2E-3
	Te 127M		6E-4
	Te 127		3E-3
	Te 129M		3E-4
	Te 131M		6E-4
	Te 132		3E-4
Terbium (65)	Tb 160		4E-4
Thallium (81)	Tl 200		4E-3
	Tl 201		3E-3
	Tl 202		1E-3
	Tl 204		1E-3
Thulium (69)	Tm 170		5E-4
	Tm 171		5E-3
Tin (50)	Sn 113		9E-4
	Sn 125		2E-4
Tungsten (Wolfram) (74)	W 181		4E-3
	W 187		7E-4
Vanadium (23)	V 48		3E-4
Xenon (54)	Xe 131M	4E-6
	Xe 133	3E-6
	Xe 135	1E-6
Ytterbium (70)	Yb 175		1E-3
Yttrium (39)	Y 90		2E-4
	Y 91M		3E-2
	Y 91		3E-4
	Y 92		6E-4
	Y 93		3E-4
Zinc (30)	Zn 65		1E-3
	Zn 69M		7E-4
	Zn 69		2E-2
Zirconium (40)	Zr 95		6E-4
	Zr 97		2E-4
Beta and/or gamma emitting radioactive material not listed above with half-life less than three years		1E-10	1E-6

Footnotes to Schedule C.

1. Values are given only for those materials normally used as gases.

2. [MICRO]Ci/gm for solids.

3. Numerical value expressed in "E notation" where the letter "E" represents "times ten raised to the power of," thus, replacing the "x 10" in scientific notation, followed by the value of the exponent. (e.g. 1 x 10² = 1E2; 1 x 10^-2 = 1E-2)

NOTE: 1: Many radioisotopes disintegrate into isotopes which are also radioactive. In expressing the concentrations in Schedule C, the activity stated is that of the parent isotope and takes into account the daughters.

NOTE: 2: 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 concentration present in the product and the exempt concentration established in Schedule C for the specific isotope when not in combination. The sum of such ratios may not exceed "1" (i.e., unity).

EXAMPLE:

Concentration of Isotope A in Product		Concentrate of Isotope B in Product
___________________________	+	___________________________	[LESS THAN EQUAL TO] 1
Exempt concentration of Isotope A		Exempt concentration of Isotope B

Cal. Code Regs. Tit. 17, § 30237

1. Amendment filed 7-22-71; effective thirtieth day thereafter (Register 71, No. 30).
2. Change without regulatory effect amending Arsenic and Beryllium and adoption of NOTE filed 11-1-91 pursuant to section 100, title 1, California Code of Regulations (Register 92, No. 5).
3. Amendment of listings for argon and platinum and amendment of footnote 2 and NOTE filed 7-28-2006; operative 8-27-2006 (Register 2006, No. 30).
4. Repealer and new section filed 12-30-2014; operative 4-1-2015 (Register 2015, No. 1).

Note: Authority cited: Sections 114975, 115000 and 131200, Health and Safety Code. Reference: Sections 114965, 114970, 115000, 115060, 115165, 115230, 115235, 131050, 131051 and 131052, Health and Safety Code.