The Updated Noise Exposure Tables include the calculated noise exposure level (DNL) in each census block for each of the proposed Airspace Redesign Alternatives including the Preferred Alternative and the Preferred Alternative with mitigation. These Tables also reflect minor changes in the noise analysis methodology. Therefore, noise exposure levels previously published may not exactly match those found in the Updated Noise Exposure Tables. For more information regarding the minor changes in the noise analysis methodology please refer to the Noise Mitigation Report (PDF).