SU0013380 - Laserfiche WebLink

Home Browse Search

4.16 NOISE IMPACT 416-1 (Residential and other noise-sensitive uses would be exposed to excessive noise levels especially between Grant Line Road and I-205) Mitigation Measure 4.16-1(a): The siting of residential or other noise-sensitive land uses adjacent to I-205 should be avoided. The Mitigated Plan proposes Light Industrial uses adjacent to most of the I-205 freeway frontage, with freeway commercial occupying the rest of the frontage. The edge treatment along the freeway could include sound walls or earthen berms as necessary. Mitigation Measure 4.16-1(b): Locate noise-sensitive land uses as far as possible from major roadways. When this is not feasible or desirable, build earth berms or sound walls between the noise source and the noise-impacted areas. The Mitigated Plan assumes that residential and other noise-sensitive uses along major roadways and the railroad will be buffered by earth berms and/or sound walls. Mitigation Measure 4.16-1(c): Schools should not be sited in areas exposed to noise levels above an Ldn of 60 dB. Revise the land use plan to relocate two proposed high schools and three elementary schools. While schools should be protected from high noise levels, this may also be accomplished through sound walls or earth berms along the noise-generating use. The Mitigated Plan relocated some schools, and assumes that others will be buffered from noise by walls or berms to be described in the Specific Plan. IMPACT 416-3 (Proposed noise-sensitive land uses adjacent to agricultural lands could be significantly impacted by agricultural machinery and equipment noise) Mitigation Measure 4.16-3: Earth berms, sound walls, or other mitigation should be constructed where noise-sensitive land uses would abut agricultural fields. Alternatively, a buffer zone between the noise-sensitive uses and agricultural lands could be provided. A 1,000 foot buffer would reduce noise levels generated by farm machinery by about 20 dB. The Mitigated Plan proposes an edge treatment along the western edge of the project to include walls and/or earth berms, and a major roadway. The walls or berms will directly mitigate noise impacts, and the four-lane roadway will create a noise source that will neutralize periodic farming-related equipment noise. - 10- The SWA Group