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Measurement Site 4 was located at the Rancho Santiago Community College <br />Campus near the entrance to the auditorium. An existing 3 -foot wall located <br />near the right -of -way would be removed for alternative 3. The distance <br />between the measurement location and the Bristol Street centerline for <br />alternatives 1, 2, and 3 are 127, 129, and 109 feet, respectively. As shown in <br />Table 18, a 6 -foot noise barrier constructed at the right -of -way would reduce <br />the projected noise levels below 67 Leq. However, a 6 -foot wall is not <br />recommended since it may have an adverse aesthetic impact on the campus. <br />Measurement Site 5 was located in the front yard of a single - family residence <br />located north of Civic Center Drive, near 9th Street. The residence will be <br />removed with alternatives 1 and 2. The measurement location for alternative <br />3 is located 66 feet from Bristol Street centerline (6 feet from the right -of- <br />way). Table 18 shows that a 6 -foot noise barrier constructed in front of the <br />residential complex would provide adequate noise attenuation. However, a <br />contiguous noise barrier is not recommended since it would restrict pedestrian <br />and vehicular access.' <br />Measurement Site 6 was located in the front yard of a single family residence <br />located south of Civic Center Drive. The residence will be removed under <br />alternatives 1 and 3. The measurement location for alternative 2 is located 64 <br />feet from the Bristol Street centerline (3 feet from the right -of -way). Table 18 <br />shows that a 6 -foot noise barrier constructed in front of the residential <br />complex would provide adequate noise attenuation. However, a contiguous <br />noise barrier is not recommended since it would restrict pedestrian and <br />vehicular access. <br />Measurement Site 8 was located in the front yard of a single family dwelling <br />located at the corner of Raymar Street. Alternative 3 has the measurement <br />location 72 feet from the Bristol Street centerline, with the receptor 12 feet <br />from the noise barrier analyzed. The other two alternatives propose to <br />remove this dwelling. As shown in Table 18, a 6 -foot noise barrier could be <br />constructed around the front of the house to provide adequate noise <br />attenuation. A 6 -foot barrier is recommended in this location, however, it <br />must stop 25 feet from the corner to provide adequate sight distance for <br />motorists on Raymar Street. <br />Measurement Site 10 was located adjacent to the Mater Dei High School <br />Athletic track, 8 feet from the right -of -way and elevated 3.5 feet. The barrier <br />analysis assumed that the sensitive receptor was located 10 feet behind a wall <br />constructed at the right -of -way. The 6 and 8 -foot barriers were assumed to be <br />constructed on the 3.5 foot elevated ground. As shown in Table 18, a 6 -foot <br />barrier constructed at the right -of -way will be adequate to achieve acceptable <br />noise levels. <br />N -31 <br />75C -166 <br />