The health implications of those pollutants are shown as well, based on 1998 measurements. EPA released the CEP results to a limited public in December 1998, after EDF and others requested it under the Freedom of Information Act. EDF then added health risk calculations and incorporated all the data into Scorecard. EPA has cautioned that CEP results are based on modeling, rather than direct measurements, and that the modeling uses 1990 data. Comparisons with the handful of more recent, measured results for air toxics that are available from eight states, some as recent as 1997, show that CEP estimates are generally comparable, with underestimation a bigger problem than overestimation.
Scorecard shows all comparisons.
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