SCHEDULES

SCHEDULE 1E+WHAZARDOUS SUBSTANCES AND CONTROLLED QUANTITIES

PART 4E+WNotes to Parts 1 to 3

20. Polychlorodibenzofurans and polychlorodibenzodioxinsE+W

The quantities of polychlorodibenzofurans and polychlorodibenzodioxins are calculated using the factors in Table 1—

Table 1

WHO 2005 TEF*

2,3,7,8-TCDD	1	2,3,7,8-TCDF	0.1
1,2,3,7,8-PeCDD	1	2,3,4,7,8-PeCDF	0.3
		1,2,3,7,8-PeCDF	0.03

1,2,3,4,7,8-HxCDD	0.1
1,2,3,6,7,8-HxCDD	0.1	1,2,3,4,7,8-HxCDF	0.1
1,2,3,7,8,9-HxCDD	0.1	1,2,3,7,8,9-HxCDF	0.1
		1,2,3,6,7,8-HxCDF	0.1
1,2,3,4,6,7,8-HpCDD	0.01	2,3,4,6,7,8-HxCDF	0.1

OCDD	0.0003	1,2,3,4,6,7,8-HpCDF	0.01
		1,2,3,4,7,8,9-HpCDF	0.01

		OCDF	0.0003

(T = tetra, P = penta, Hx = hexa, Hp = hepta, O = octa) *Reference — Van den Berg et al: The 2005 World Health Organisation Re-evaluation of Human and Mammalian Toxic Equivalency Factors for Dioxins and Dioxin-like Compounds.