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United States Department of Agriculture

Agricultural Research Service

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Radionuclide Disposal Table
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Allowable Disposal Amount of Radioactive Materials

Table 1 indicates the chemical form which is to be used for selecting the appropriate ALI or DAC value. The ALIs and DACs for inhalation are given for an aerosol with an activity median aerodynamic diameter (AMAD) of 1 ?m and for three classes (D,W,Y) of radioactive material, which refer to their retention (approximately days, weeks or years) in the pulmonary region of the lung. This classification applies to a range of clearance half-times of less than 10 days for D, for W from 10 to 100 days, and for Y greater than 100 days. The class (D, W, or Y) given in the column headed "Class" applies only to the inhalation ALIs and DACs given in Table 1, columns 2 and 3.

Table 2 provides concentration limits for airborne and liquid effluents released to the general environment.

Table 3 provides concentration limits for discharges to sanitary sewer systems.

Notation

The values in Tables 1, 2, and 3 are presented in the computer "E" notation. In this notation a value of 6E-02 represents a value of 6x10-2 or 0.06, 6E+2 represents 6x102 or 600, and 6E+0 represents 6x100 or 6.

Tables provided by the U.S. Nuclear Regulatory Commission:


Arsenic-73

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
33Arsenic-73W, all compounds8E+32E+37E-72E-91E-41E-3



Cadmium-109

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
48Cadmium-109D, see 104Cd3E+2
Kidneys
4E+1
Kidneys
1E-8---
(4E+2)(5E+1)-7E-116E-66E-5
W, see 104Cd-1E+2
Kidneys
5E-8---
-(1E+2)-2E-10--
Y, see 104Cd-1E+25E-82E-10--



Calcium-45

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
20Calcium-45W, all compounds2E+38E+24E-71E-92E-52E-4



Carbon-14

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
6Carbon-14Monoxide-2E+67E-42E-6--
Dioxide-2E+59E-53E-7--
Compounds2E+32E+31E-63E-93E-53E-4



Cesium-137

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
55Cesium-137D, all compounds1E+22E+26E-82E-101E-61E-5



Chlorine-36

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
17Chlorine-36D, chlorides of H, Li, Na, K, Rb, Cs, and Fr2E+32E+31E-63E-92E-52E-4
W, chlorides of lanthanides, Be, Mg, Ca, Sr, Ba, Ra, Al, Ga, In, Tl, Ge, Sn, Pb, As, Sb, Bi, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Tc, and Re-2E+21E-73E-10--



Phosphorus-32

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
15Phosphorus-32D, all compounds except phosphates given for W6E+29E+24E-71E-99E-69E-5
W, phosphates of Zn2+, S3+, Mg2+, Fe3+, Bi3+, and lanthanides-4E+2 2E-75E-10--



Phosphorus-33

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
15Phosphorus-33D, see 32P6E+38E+34E-61E-88E-58E-4
W, see 32P-3E+31E-64E-9--



Rubidium-86

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
37Rubidium-86D, all compounds5E+28E+23E-71E-97E-67E-5



Selenium-75

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
34Selenium-75D, see 70Se5E+27E+23E-71E-97E-67E-5
W, see 70Se-6E+23E-78E-10--



Sulfur-35

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2Monthly
Average
Concentration
(?Ci/ml)
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
16Sulfur-35Vapor1E+4
LLI wall
6E-62E-8--
(8E+3)---1E-41E-3
W, elemental sulfur,6E+3-----
sulfides of Sr, Ba, Ge, Sn, Pb, As, Sb, Bi, Cu, Ag, Au, Zn, Cd, Hg, W, and Mo. Sulfates of Ca, Sr, Ba, Ra, As, Sb, and Bi-2E+39E-73E-9--



Zinc-65

Atomic
No.
RadionuclideClassTable 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1Col. 2Col. 3Col. 1Col. 2
Oral
Ingestion
ALI
(?Ci)
InhalationAir
(?Ci/ml)
Water
(?Ci/ml)
Monthly
Average
Concentration
(?Ci/ml)
ALI
(?Ci)
DAC
(?Ci/ml)
30Zinc-65Y, all compounds4E+23E+21E-74E-105E-65E-5




Last Modified: 8/12/2016
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