Honda R&D Co., Ltd.
Takasu Proving Center

Address	21-10, Takasu Cho, Kamikawa Gun, Hokkaido
Established	1996
Main products	Comprehensive R&D of motorcycles, automobiles, and power products (on test courses)
Water discharge point	Shumamu River

Water Quality

Item	Unit	Regulation Standards (Incl. Agreed Standards)	Voluntary Regulation Standards	Measurement Results
				Maximum (minimum)	Average
Hydrogen ion concentration	pH	5.8–8.6	5.8–8.6	7.1	7.1
Biochemical oxygen demand (BOD)	mg/L	160	80	Less than 2.0	Less than 2.0
Chemical oxygen demand (COD)	mg/L	160	80	4.1	4.1
Suspended solids (SS)	mg/L	200	100	8.2	8.2
Oil content	mg/L	5	2.5	Less than 2.0	Less than 2.0
Phenols	mg/L	3	1.5	Less than 0.2	Less than 0.2
Copper and its compounds	mg/L	3	1.5	Less than 0.05	Less than 0.05
Zinc and its compounds	mg/L	5	2.5	Less than 0.05	Less than 0.05
Soluble iron and its compounds	mg/L	10	5	Less than 0.1	Less than 0.1
Soluble manganese and its compounds	mg/L	10	5	Less than 0.1	Less than 0.1
Total chromium	mg/L	2	1	Less than 0.05	Less than 0.05
Fluorine content	mg/L	8	4	Less than 0.2	Less than 0.2
Colon bacillus colony count	No./cm3	3,000	1,500	0	0
Nitrogen content	mg/L	120	60	Less than 0.2	Less than 0.2
Phosphorous content	mg/L	16	8	Less than 0.05	Less than 0.05
Cadmium and its compounds	mg/L	0.1	0.05	Less than 0.01	Less than 0.01
Cyanides	mg/L	1	0.5	Less than 0.1	Less than 0.1
Lead and its compounds	mg/L	0.1	0.05	Less than 0.02	Less than 0.02
Chromium (VI) compounds	mg/L	0.5	0.25	Less than 0.05	Less than 0.05

PRTR Listed Substances

Substance	Volume Handled	Volume Discharged		Volume Transferred		Recycling	Volume 100 Disposed	Volume Consumed (Transferred to Products)
		Atmosphere	Public Waters	Sewage	Waste Disposal Sites Outside Company
Xylene	15,473	1	0	0	0	0	15,472	0
Toluene	28,534	5	0	0	0	0	28,529	0
Benzene	1,118	1	0	0	0	0	1,117	0
Total	45,125	7	0	0	0	0	45,118	0

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