Table1 Soil pollution by Dioxins in Tokorozawa

Table1: Soil pollution by Dioxins from incinerators for industrial wastes in Tokorozawa(1995)*1

Sample(distance from the source) Dioxin pollution in soil(pg-TEQ/g)

PCDD PCDF Co-PCB PCDD+PCDF PCDD+PCDF+Co-PCB

ashes 530 3800 1800 4300 6100

ashes 540 1500 890 2000 2900

ashes and soil(50m) 120 320 100 440 540

ashes and soil(70m) 170 360 220 530 750

soil(100m) 51 91 35 140 180

soil(150m) 76 110 52 180 230

soil(175m) 45 170 74 220 290

soil(550m) 130 74 81 220 300

soil(850m) 36 61 37 99 140

soil(950m) 27 69 15 96 110

soil(4km) 28 52 19 80 99

soil(4km) 39 39 12 78 90

*1 H.Miyata et al. : Abstract of 5th International conference on Environmental Chemistry, p.188-189, Hawaii, USA(1996)

Table 3: the intake of dioxin from polluted soil ( in childhood)

by Professor Miyata from Setsunan University

weight dioxin level in the soil the oral intake the intake from skin Total intake of dioxin

(pg-TEQ/g)
(pg-TEQ/kg/day)

17kg
20 0.94 0.004 0.94

65 3.1 0.13 3.2

100 4.7 0.019 4.7

200 9.4 0.039 9.4

448 21 0.087 21

1000 47 0.19 47

2000 94 3.87 98

　presumed: the intake of the soil in childhood: 47mg/kg/day
TDI by recommended WHO: 1-4pgTEQ/kg/day

Table 4: Target of dioxin pollution by Japanese Government(1997)*4

in the fume
(ng-TEQ/N�G)
Target value of dioxin pollution

number of facility in Japan

existen facility
new facility

1998.12～ 2002.12～ 1997.12～

electlic steel burner more than 1000kV
80
5 0.5

refuse burner 4000kg/h～ 1 0.1
about
12,000

2000～4000kg/h 5 1

200～2000kg/h 10 5

～200kg/h
no regulation

about 80,000?

in the atomosphere(pg-TEQ/N�G)*steer value
0.8pg-TEQ/N�G

TDI(Japan)

10pg-TEQ/kg/day

*4 Source: data on the Ministry of Health and Welfre, and Environment Agency(1997)

Table1: Soil pollution by Dioxins from incinerators for industrial wastes in Tokorozawa(1995)*1
Sample(distance from the source)	Dioxin pollution in soil(pg-TEQ/g)
Sample(distance from the source)	PCDD	PCDF	Co-PCB	PCDD+PCDF	PCDD+PCDF+Co-PCB
ashes	530	3800	1800	4300	6100
ashes	540	1500	890	2000	2900
ashes and soil(50m)	120	320	100	440	540
ashes and soil(70m)	170	360	220	530	750
soil(100m)	51	91	35	140	180
soil(150m)	76	110	52	180	230
soil(175m)	45	170	74	220	290
soil(550m)	130	74	81	220	300
soil(850m)	36	61	37	99	140
soil(950m)	27	69	15	96	110
soil(4km)	28	52	19	80	99
soil(4km)	39	39	12	78	90

*1 H.Miyata et al. : Abstract of 5th International conference on Environmental Chemistry, p.188-189, Hawaii, USA(1996)

Table 3: the intake of dioxin from polluted soil ( in childhood) by Professor Miyata from Setsunan University

weight	dioxin level in the soil	the oral intake	the intake from skin	Total intake of dioxin
weight	(pg-TEQ/g)	(pg-TEQ/kg/day)
17kg	20	0.94	0.004	0.94
	65	3.1	0.13	3.2
	100	4.7	0.019	4.7
	200	9.4	0.039	9.4
	448	21	0.087	21
	1000	47	0.19	47
	2000	94	3.87	98
presumed: the intake of the soil in childhood: 47mg/kg/day TDI by recommended WHO: 1-4pgTEQ/kg/day

Table 4: Target of dioxin pollution by Japanese Government(1997)*4

in the fume (ng-TEQ/N�G)			Target value of dioxin pollution			number of facility in Japan
			existen facility		new facility
			1998.12～	2002.12～	1997.12～
	electlic steel burner more than 1000kV		80	5	0.5
	refuse burner	4000kg/h～		1	0.1	about 12,000
		2000～4000kg/h		5	1
		200～2000kg/h		10	5
		～200kg/h	no regulation			about 80,000?
in the atomosphere(pg-TEQ/N�G)*steer value			0.8pg-TEQ/N�G
TDI(Japan)			10pg-TEQ/kg/day
*4 Source: data on the Ministry of Health and Welfre, and Environment Agency(1997)