Q-2, r. 4.1 - Clean Air Regulation

Schedule Disposition versions

2012-09-01

SCHEDULE I

(ss. 78, 90, 92 and 104)

TOXICITY EQUIVALENCY FACTORS FOR POLYCHLORINATED DIBENZOFURAN AND POLYCHLORINATED DIBENZO [b,e] [1,4] DIOXIN CONGENERS

Congeners                                                Toxicity equivalency 
                                                                factor

2,3,7,8-tetrachlorodibenzodioxin                                  1

1,2,3,7,8-pentachlorodibenzodioxin                                1

1,2,3,4,7,8-hexachlorodibenzodioxin                              0.1

1,2,3,6,7,8-hexachlorodibenzodioxin                              0.1

1,2,3,7,8,9-hexachlorodibenzodioxin                              0.1

1,2,3,4,6,7,8-heptachlorodibenzodioxin                           0.01

Octachlorodibenzodioxin                                          0.0001

2,3,7,8-tetrachlorodibenzofuran                                  0.1

1,2,3,7,8-pentachlorodibenzofuran                                0.05

2,3,4,7,8-pentachlorodibenzofuran                                0.5

1,2,3,4,7,8-hexachlorodibenzofuran                               0.1

1,2,3,6,7,8-hexachlorodibenzofuran                               0.1

1,2,3,7,8,9-hexachlorodibenzofuran                               0.1

2,3,4,6,7,8-hexachlorodibenzofuran                               0.1

1,2,3,4,6,7,8-heptachlorodibenzofuran                            0.01

1,2,3,4,7,8,9-heptachlorodibenzofuran                            0.01

Octachlorodibenzofuran                                           0.0001

    

O.C. 501-2011, Sch. I.