Why is my neighbor eligible for sound insulation and I am not?

Noise mitigation programs are strictly regulated under 14 CFR Part 150 (Part 150 Study), which mandates use of federally-established aircraft noise exposure calculations and thresholds for defining eligibility. The process for calculating aircraft noise exposure requires inputting numerous pieces of aircraft operations data that specifically include a 10-decibel (dB) penalty for each aircraft operation occurring between 10 p.m. and 7 a.m. This penalty is intended to account for the higher human sensitivity to noise during the nighttime hours. The calculations result in noise contours that depict areas impacted by cumulative aircraft noise exposure levels of 60, 65, 70 and 75 dB DNL.

The Federal Aviation Administration specifies that only residences impacted by cumulative aircraft noise exposure level of 65 dB DNL or greater are considered incompatible with an airport and thus eligible for sound insulation programs using aviation-generated revenues. Minneapolis-St. Paul International Airport is the only airport in the United States for which the FAA has approved mitigation in areas exposed to less than 65 dB DNL, in accordance with a legal agreement (known as the Consent Decree) between the MAC and the cities of Minneapolis, Richfield and Eagan.  In accordance with the First Amendment to the Consent Decree, and beginning in 2014, home eligibility for mitigation will be evaluated each year based on an Annual Noise Contour Report.  A single-family or multi-family home will be considered eligible for mitigation under the noise mitigation program when the following criteria are met:

(a) the community in which the home is located has adopted local land use controls and building performance standards that prohibit new residential construction or remodeling on the block on which the home is located, unless the construction or remodeling materials and practices are consistent with the noise impact levels and consistent with noise mitigation provided by this program, and

(b) the home is located, for a period of three consecutive years (the first of the three years cannot be later than calendar year 2020) in the actual 60-64 DNL noise contour prepared by the MAC and published in the Annual Noise Contour Report, and, within a higher noise impact mitigation area when compared to the single-family home's status under the noise mitigation program prior to the amendment.

The MAC will offer noise mitigation to owners of eligible single-family and multi-family homes in the year following the determination of eligibility.  Owners of single-family and multi-family homes who have previously opted out of mitigation are not eligible to participate in the modified mitigation program.

Please click here to determine if your home meets the eligibility requirements: www.macnoise.com/residential-noise-mitigation/do-i-qualify

For more information on the First Amendment to the Consent Decree, click here: Modified Consent Decree.


Updated 4/3/2018