| Comment | Dear CARB,
Thank you for your work on the important matter of reducing
greenhouse gas emissions.
The use of fly ash - the toxic waste byproduct of coal fired power
plants - dramatically increases gheenhouse gas emissions when true
lifecycle comparison is made to other cement production options.
In addition, adding fly ash to clinker has proven to release back
into the air all of the mercury that the coal fired power plants
were supposed to be controlling.
I have attached more detailed information and references and
appreciate your consideration of this important issue.
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