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Prevention of Air, Water and Soil Pollution

Water Pollution Prevention and Associated Measures

Based on the Water Pollution Control Act and various prefectural ordinances, the Chugai Group treats its wastewater at wastewater treatment plants, verifying compliance with wastewater standards before releasing it into public waters.
Water consumption increased by 90 tons compared to 2014. In terms of water quality, total BOD in wastewater fell by 1,329 kg compared to 2013, while phosphates increased by 265 kg. Note that baseline levels for wastewater at all plants and laboratories are significantly below prescribed environmental limits.

Water Consumed and Wastewater
Graph: Water Consumed and Wastewater

Total BOD, Nitrogen and Phosphorus
Graph: Total BOD, Nitrogen and Phosphorus

Air Pollution Prevention and Associated Measures

Based on the Air Pollution Control Act and various prefectural ordinances, the Chugai Group measures emissions of nitrogen oxide (NOx), sulfur oxides (SOx) and particulates, verifying compliance with emissions standards before releasing them.
Figures for air pollutants emitted at each site are trending significantly below prescribed environmental limits. While 2015 NOx emissions increased by five tons compared to 2014, SOx emissions decreased significantly due to heat source equipment energy conversion.

NOx emissions
Graph: NOx Emissions

SOx and Dust Emissions
Graph: SOx and Dust Emissions

Soil Pollution Prevention and Associated Measures

Based on the Soil Pollution Control Act and various prefectural ordinances, the Chugai Group conducts appropriate soil surveys in compliance with the law.
In the event that soil pollution were to be found, we would discuss the issue with the authorities, and take appropriate steps to contain it and clean it up.

<Ukima plant>
A soil survey was conducted in association with the dismantling of a drug manufacturing facility. As a result, fluorine, arsenic and lead were detected in some soil and groundwater at levels above standards, and after submitting a report to the authorities based on the Soil Pollution Control Act, we excavated and removed all of the polluted soil exceeding those standards.
While the removal of the polluted soil also eliminated the cause of the groundwater pollution, in accordance with the law we will continue monitoring the groundwater to verify that it is no longer polluted.

<Kamakura laboratory>
In association with the dismantling of a drug research facility, a soil survey was conducted in accordance with regulations. As a result, fluorine and selenium were detected in some soil at levels above standards, and after submitting a report to the authorities based on Kanagawa Prefecture’s Ordinance for the Protection of Living Environments, we excavated and removed all of the soil exceeding those standards. This work is scheduled to be completed in July 2016.

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