Conservation Minnesota

State Report Shows Little Change in Air, Water Pollution Emissions

Air and water pollution emissions changed little between 2007-8, according to an annual report released this spring by the Minnesota Pollution Control Agency (MPCA).  A slowing economy was in part responsible for the lack of change in pollution releases.

The MPCA report showed mostly stable air pollution, although sulfur dioxides and nitrogen oxides decreased significantly.

The MPCA’s estimates:

Carbon dioxide, 127.3 million tons in 2004, 125.6 million tons in 2008, 0.8% decrease between 2007-8.

Particulate matter (soot), 781,000 tons in 2004, 776,000 tons in 2008, no change between 2007-8.

Sulfur dioxide, 163,000 tons in 2004, 129,000 tons in 2008, 7% decrease between 2007-8.

Nitrogen oxides, 480,000 tons in 2004, 391,000 tons in 2008, 4.2% decrease between 2007-8.

Volatile organic compounds, 364,000 tons in 2004, 345,000 tons in 2008, 0.6% decrease between 2007-8.

Carbon monoxide, 1.974 million tons in 2004, 1.771 million tons 2008, 0.1% decrease between 2007-8.

Total of the last five pollutants, 3.762 million tons in 2004, 3.443 million tons in 2008, 0.9% decrease between 2007-8.

MPCA’s water estimates from sewage and industrial sources:

Total suspended solids, 4.6 million kilograms in 2004, 3.8 million kilograms in 2008, 10% reduction between 200-8.

Biochemical oxygen demand, 3 million kilograms in 2004, 2.7 million kilograms in 2008, 4% increase between 2007-8.

Total phosphorus, 920,000 kilograms in 2004, 680,000 kilograms in 2008, 3% increase between 2007-8.

Ammonia, 830,000 kilograms in 2004, 630,000 kilograms in 2008, 19% increase between 2007-8.

Nitrate, 3.4 million kilograms in 2004, 3.8 million kilograms in 2008, 5% decrease from 2007-8.

Total of the five pollutants:  12.7 million kilograms in 2004, 11.6 million kilograms in 2008, 3% decrease 2007-8.

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