Environmental Assessment Supplements

There are three graphics linked below, depicting RNAV STAR and SID flight tracks and noise exposure for Alternatives 2, 3, and 4. Each graphic depicts the Alternative RNAV STARS and SIDS for APA (only), conventional (existing) arrival and departure flight tracks for APA and DEN, and census block boundaries and centroids for areas of increases in noise exposure of 5 dB DNL. The census block centroids and flight tracks are the same as those shown in the Draft EA and at the recent public meetings. Note that no graphics are provided for Alternative 1 – under this alternative, there is no population that would be exposed to noise levels at disclosed levels. A corresponding table provides noise exposure for each population centroid shown on the map for each alternative (for those also shown in the Draft EA). No Action DNL noise exposure in 2017, noise exposure for each alternative, and the difference are presented in terms of DNL. The table presents noise exposure for the census blocks/centroids that would experience an increase in noise exposure of 5 dB DNL for each alternative.