The Story of Sakichi Toyoda
Sakichi Toyoda, the founder of Toyota Industries Corporation, possessed a strong ambition to contribute to society from his days as a youth. He had devoted his 63-year-long life to invention.
In the Kariya Plant, soil and groundwater testing was carried out and it newly revealed some parts of the site exceeded control values. Toyota Industries reported to the Aichi Prefecture and made a public announcement about the results on December 22, 2015.
Based on Aichi Prefecture’s instructions, Toyota Industries takes continuous measures to clean the contamination in putting a top priority on not to make troubles to neighborhood residents.
Kariya Plant Soil Testing Results(Soil elution amount)
Item | Control value*1 | Maximum value | Ratio to the control value | Excess points/ Testing points | |
---|---|---|---|---|---|
Volatile organic compound | Trichloroethylene | 0.03mg/l | 1.0mg/l | 33.3 times | 6/51 |
Cis-1,2-dichloroethylene*2 | 0.04mg/l | 0.36mg/l | 9 times | 7/51 | |
Heavy metal | Fluorine | 0.8mg/l | 16mg/l | 20 times | 72/299 |
Lead | 0.01mg/l | 0.038mg/l | 3.8 times | 1/283 |
Kariya Plant Soil Testing Results(Soil elution amount)
Item | Control value*1 | Maximum value | Ratio to the control value | Excess points/ Testing points | |
---|---|---|---|---|---|
Volatile organic compound | Trichloroethylene | 0.03mg/l | 20mg/l | 667 times | 13/61 |
1,1- dichloroethylene*2 | 0.1mg/l | 0.36mg/l | 3.6 times | 3/61 | |
Cis-1,2-dichloroethylene*2 | 0.04mg/l | 8.1mg/l | 203 times | 33/61 |
*1 Control value : Determined by the Soil Contamination Countermeasures Act
*2 1,1- dichloroethylene, Cis-1,2-dichloroethylene : decomposition product of trichloroethylene
Toyota Industries carries out surveys and purification of soil and groundwater contaminated from the past use of trichloroethylene. We regularly report the survey results to local government authorities and provide information at local community meetings. As measures to prevent pollution from substances covered by the Soil Contamination Countermeasures Law as well as from grease and oils, we have drilled observation wells at all plants to conduct regular checks.
Trichloroethylene Readings
Plant | FY2011 | FY2012 | FY2013 | FY2014 | FY2015 |
---|---|---|---|---|---|
Kariya | Less than 0.002 - 7.42 |
Less than 0.002 - 4.61 |
Less than 0.002-4.63 |
Less than 0.002-3.79 |
Less than 0.002 -3.50 |
Kyowa | Less than 0.002-4.58 |
Less than 0.002-2.10 |
Less than 0.002 -3.35 |
Less than 0.002 -5.71 |
Less than 0.002 -2.99 |
* The data is pumped ground water quality before purification. The ground water is released after depuration.
* Maximum and minimum concentration is reported form this time, while weighted average was reported before.