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[quote user="Railway Man"] [quote user="Bucyrus"] In the last sentence, what do they mean by “environmental cost savings”? [/quote]  Monetized cost of pollutants as established by law.  Currently, these are (for pollutants emitted in year 2010): <OL> <LI>CO2, $30.77/ton <LI>Particulate Matter, $192,697.05/ton <LI>Volatile Organic Compounds, $1,747.53/ton <LI>NOX (nitrogen oxides), $4,112.00/ton</LI></OL> A system or practice that reduces emissions of pollutants avoids cost of pollutants, RWM [/quote] So, are these “monetized costs of pollutants as established by law” fines or fees levied by state or federal government?  Who are they paid to?  If these costs are established and known, why does the article speculate as to whether or not the savings from recovery of dynamic braking energy would offset those costs?
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