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In addition to the noise data provided in the General Plan,noise measurements (one long-term <br /> measurement and two short-term measurements)were completed near the western boundary of the <br /> project site to quantify the existing noise environment near the single-family residences. The <br /> locations of the noise measurements are shown on Figure 6. <br /> The long-term measurement (LT-1)was made near the residences adjacent to the western boundary <br /> of the project site, approximately 75 feet from Oakwood Drive and 315 feet from the center of El <br /> Camino Real. Daytime hourly average noise levels ranged from 51 to 57 dBA and nighttime hourly <br /> average noise levels ranged from 43 to 51 dBA. Maximum instantaneous noise levels ranged from <br /> 65 to 70 dBA during the day and 55 to 60 dBA at night. The CNEL ranged from 56 to 60 dBA over <br /> the five day study period. <br /> The first short-term measurement(ST-1)was made along Oakwood Drive, approximately 315 feet <br /> from the center of El Camino Real. The average noise level at this located was 60 dBA. The second <br /> short-term measurement(ST-2)was made at the southeast corner of the project site along El Camino <br /> Real. The average noise level at this location was 69 dBA. <br /> 4.12.2 Environmental Checklist and Discussion of Impacts <br /> NOISE <br /> Less Than <br /> Potentially Significant Less Than <br /> Significant With Significant No Impact Beneficial Information <br /> Impact Mitigation �p�f �P�f Source(s) <br /> Incorporated <br /> Would the project result in: <br /> 1) Exposure of persons to or generation � � � � � 1,2,3,11 <br /> of noise levels in excess of standards <br /> established in the local general plan <br /> or noise ordinance, or applicable <br /> standards of other agencies? <br /> 2) Exposure of persons to, or generation � � � � � 1,2,3 <br /> of, excessive groundborne vibration <br /> or groundborne noise levels? <br /> 3) A substantial permanent increase in <br /> ambient noise levels in the project � � � � � 1,2,3,11 <br /> vicinity above levels existing without <br /> the project? <br /> 4) A substantial temporary or periodic � � � � � 1,2,3,11 <br /> increase in ambient noise levels in the <br /> project vicinity above levels existing <br /> without the proj ect? <br /> 5) For a project located within an � � � � � 1,2,3 <br /> airport land use plan or,where such <br /> a plan has not been adopted,within <br /> two miles of a public airport or <br /> public use airport,would the project <br /> expose people residing or working <br /> in the project area to excessive <br /> noise levels? <br /> Kensington Assisted Living Facility Project 67 Initial Study <br /> Redwood City Apri12013 <br />