| In data accumulated by Toyota on air quality, emissions of SOx (sulfur oxides) continue to decrease, while a slight increase was seen in NOx (nitrogen oxides) levels. This is attributed to an increase in usage volumes of fossil fuels following the introduction of cogeneration systems.
With regard to water quality data, nitrogen, phosphorus and COD whose aggregate levels in waterways are regulated, all continue to be at levels that are only 30 to 40% of those allowed by the current regulations. |
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•Trends in Volumes of Nitrogen Oxides and
Sulfur Oxides Emissions
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