1004 59TH PL SW 2016-01-01 MF Import

Noise Assessment: Broadway Apartments Project Michael R. Yantis Associates Inc., P.S. Page 5 Noise levels will be slightly higher at the second floor of dwellings adjacent to the roadway. The barrier effect of the embankment is reduced or eliminated. We estimate that 1998 noise levels will be 69 dBA (Ldn) at the second floor south wall of a house built on a 20 foot setback, and 67 dBA for a 25 foot setback. RECOMMENDED NOISE LEVELS FOR RESIDENTIAL LAND USE Since: public roadways are exempt from the City of Everett Noise ordinance, the city applies federal government recommendations to assess existing residential noise levels near stnmts or highways. In 1980, several federal agencies combined to form the Federal Interagency Committee on Urban Noise (FICUN) and produced a written set of guidelines titled "Guidelines for Considering Noise in Land Use Planning and Control". These guidelines were produced to develop a consensus among the federal agencies regarding recommended noise levels for various land uses. The environmental noise levels (Ldn) and corresponding recommended land uses documented in the FICUN report, and in agreement with HUD guidelines, are as follows: Errerior Noise levels Ldn Recommended Land Use 0-55 dBA (Ldn) Residential without restrictions. 55-65 dBA (Ldn) Residential property generally acceptable. The guidelines note that some people may find noise levels in this category objectionable, but considering cost of mitigating measures, these noise levels are generally acceptable for residential use. 65-75 dBA (Ldn) Generally unacceptable for residential use. Acceptable for commercial use. Residential use in this environment requires special construction techniques to achieve a minimum Noise Level Reduction (NLR) of 25 dB for noise levels between 65 dBA and 70 dBA and a NLR of 30 dB for noise levels between 70 dBA and 75 dBA.