NIHON DEMPA KOGYO (NDK) CO.,LTD.

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[Emission] More than 99.5 % of a discharge is subjected to the thermal recycling thermal or the material recycling.
	Unit	FY 2015	FY 2016	FY 2017	FY 2018	FY 2019
Total discharge amount including waste	ton	247	355	442	454	483
Sludge	kg	185,467	289,365	359,416	368,090	392,720
Metals (battery)	kg	33	38	64	116	25
Wood	kg	2,660	5,010	2,510	2,610	3,720
Oil	kg	11,520	11,400	11,193	11,135	9,610
Acid	kg	466	479	852	7,648	6,833
Alkali	kg	17,336	16,422	19,718	16,070	17,180
Glass & Ceramic	kg	15,628	19,845	18,310	20,240	25,975
Plastic	kg	13,749	12,799	21,291	28,333	27,064
Burnable Waste	kg	-	-	-	-	-
Others(low,high concentration PCB)	kg	-	-	8,407	90	-

[Water Quality] As to drainage, according to the inspection based on the laws and regulations, there is no problem. Below are result of 2019 check.
Hazardous substance
	Unit	Limit	Measured value
	Unit
Cadmium and its Compounds	mg/l	0.1	< 0.001
Cyanide	mg/l	1	< 0.02
Organophosphorus	mg/l	1	< 0.10
Lead and its Compounds	mg/l	0.1	< 0.01
Chromium	mg/l	0.5	< 0.01
Arsenic and its Compounds	mg/l	0.1	< 0.01
Mercury and its Compounds	mg/l	0.005	< 0.0005
Alkyl mercury compound	-	Not to be detected	Not detected
Polychlorinated biphenyl	mg/l	0.003	< 0.0003
Trichloroethylene	mg/l	0.1	< 0.01
Tetrachloroethylene	mg/l	0.1	< 0.01
Dichloromethane	mg/l	0.2	< 0.02
Carbon tetrachloride	mg/l	0.02	< 0.002
1, 2 - Dichloroethane	mg/l	0.04	< 0.004
1, 1 - Dichloroethylene	mg/l	1	< 0.02
Cis - 1, 2 - Dichloroethylene	mg/l	0.4	< 0.04
1, 1, 1 - Trichloroethane	mg/l	3	< 0.3
1, 1, 2 - Trichloroethane	mg/l	0.06	< 0.006
1, 3 - Dichloropropene	mg/l	0.02	< 0.002
Thiuram	mg/l	0.06	< 0.006
Simazin	mg/l	0.03	< 0.003
Benthiocarb	mg/l	0.2	< 0.02
Benzene	mg/l	0.1	< 0.01
Selenium and its Compounds	mg/l	0.1	< 0.01
Boron and its Compounds	mg/l	10	< 0.2
Fluorine and its Compounds	mg/l	8	2.8
1, 4 - Dioxane	mg/l	0.5	< 0.05
Ammonia and its Compounds	mg/l	100	7.1

other drainage
	Unit	Limit	Measured value
	Unit
pH	pH	5.8≤ χ ≤8.6	6.6
BOD	mg/l	160	13.0
COD	mg/l	160	5.7
SS	mg/l	200	8.0
n-Hex (mineral oil)	mg/l	5	< 1.1
Phenol	mg/l	5	< 0.10
Copper	mg/l	3	< 0.10
Zinc	mg/l	2	< 0.10
s-Fe	mg/l	10	< 1.0
s-Mn	mg/l	10	< 1.0
Nitrogen	mg/l	120	15.6
Phosphorus	mg/l	16	< 0.10