the secretary of environmental quality. he's right about those spikes. the epa has not set a legal limit for emissions. it says it's a years long process. according to this may 2016 internal mem row obtained by cnn, federal regulators have set a recommendation based on cancer risk. an annual average of 0.2 mic micrograms per cubic liter is what it calls the upper limit of acceptability. just remember the number, 0.2. it's represented by the red line on this graph. now, look at the average concentration found in the air at those six testing sites between may 2016 and august 2017. one of those testing sites is here, near fifth ward elementary school, just a few hundred yards from the plant. we found that the average concentration in the air near the school over 17 months was more than 34 times the epa's