Change in Noise over Residences-map

Following is the second part of the proposed changes noise mapping- How noise will change in each census block in the SoCal Metroplex. I’ve already mapped the total aircraft noise map here.

Firstly, the FAA did provide this disclaimer about the use of this data:googleearthintro
“This information is provided for informational proposes only and is not intended for use outside the Google Earth environment. Download and manipulation of this data outside Google Earth is discouraged.”

At the risk of discouragement from the FAA, here is a visual geographic representation of the supplied data- outside of the Google Earth Environment.

This map shows the winners and losers when flight paths are moved on such a large scale.

Here is the interactive and searchable map of Aircraft Noise:

Full Screen map here:

Each dot represents a census block- an area of residential population. The amount of population in each block is between 0-2000 people. Gaps in coverage indicate areas that don’t have continuous population-open space, industrial and commercial zones are not included. (I’ve released a map of noise impacts to cultural areas such as parks and open spaces earlier – available here.)
If aircraft noise was equitably distributed among the population points there would be a balance of warm colors ( the increase in noise) with cool colors ( the decrease in noise.)

Balance of Noise Impacts over Metroplex Population
# ImpactedPercentResult
3,088,07816%The same

Most of the change in noise occurs between 25dB DNL and 45 dB DNL.  A range of noise that isn’t included in the EA’s noise criteria. The FAA’s restrictive noise criteria used by the FAA allows these increases up to 9dB of sound to not be labeled “significant”.

For examples of how the DTA Change in Noise Map is being used visit SNA: Orange and Newport Beach impacts and the Sierra Club’s comments.