Another Awesome Poster from King County! I love the graphic of the pie slices in how the benefits from biosolids (aka treated sewage sludge) break down and this quote:
Using field measurements from the county’s project sites, University of Washington researchers calculated 2.29 metric tons of carbon credits and only 0.135 metric tons of debits (from truck and equipment emissions). This means 17 times more carbon is being stored in the soil than is being released to the atmosphere.
http://www.kingcounty.gov/environment/wastewater/Biosolids/BiosolidsRecyclingProjects/~/media/environment/wastewater/biosolids/docs/1003_BSagPOSTER.ashx
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