2019-090 - Adopting the Mitigated Negative Declaration

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*:/ : 11-1 h WA ST-2 was conducted on March 23, 2019, beginning at 6:33 PM. The measurement was taken 25 feet east of the skate park edge. Primary noise sources were speech and skating activity. At the time of measurement there were 5 to 6 active skaters and several observers. Sound levels at the park at 25 feet ranged from 51 to 62 dBA ley. Noise levels associated with the following activities were observed: speech such as talking and cheering ranged from 52 to 62 dBA Ley; skating activity noise from wheel to ramp or ground contact ranged from 59 to 62 dBA Ley; fall impact sound levels were 55 to 65 dBA ley; and ambient background noise levels were 48 to 52 dBA Ley. ST-3 was conducted on March 23, 2019, beginning at 6:50 PM. The measurement was taken 10 feet south of the skate park edge and 5 feet north of the wall adjacent to residences. Primary noise sources were speech and skating activity. At time of measurement there were 8 active skaters and several observers. Sound levels at the park at 10 feet ranged from 50 to 70 dBA Ley. Noise levels associated with the following activities were observed: speech such as talking and cheering ranged from 52 to 63 dBA Ley; skating activity noise from wheel to ramp or ground contact ranged from 53 to 70 dBA Ley; fall impact sound levels were up to 65 dBA Ley; and ambient background noise levels were 49 to 51 dBA ley. 6th Street Site The 6th Street Site sits in a southwest corner lot of 6th Street and Lacey Street within a residential area. The 6th Street Site is vacant with no above grade structures. The nearest noise sensitive receptors are surrounding residences and Garfield Elementary School. Residences are adjacent to the 6th Street Site's western and southern property lines, and residences are also located approximately 60 feet north of the site across 6u Street. To the east is Garfield Elementary School, approximately 60 feet away across Lacey Street. Existing noise conditions mostly consist of local traffic. The project area lies outside the 65 dBA CNEL contour per the City of Santa Ana's Noise Element, Exhibit 5, Transportation Noise Sources. Other existing noise sources include typical residential neighborhood noises and school related activities, such as student drop-off and pick- up, and outdoor and after -school activities. ST-4 was conducted on March 26, 2019, beginning at 7:24 PM. The measurement was in the southwest corner of the project site and at least 5 feet from existing barriers. Primary noise sources were local traffic and adjacent neighbors to the west playing basketball. Traffic noise was mostly dependent on vehicle, vehicle speed, and acceleration. Smaller cars and SUV's ranged from 46 to 53 dBA Ley and pick-up trucks with louder exhausts were measured up to 59 dBA. Overall, noise levels at the vacant site ranged from 41 to 60 dBA Ley. Noise levels associated with the adjacent neighbors conversing and playing basketball ranged from 44 to 49 dBA Ley. At times where no traffic was present and neighboring activities ceased, ambient background noise levels were as low as 41 dBA I y. Raiff Street Site The Raitt Street Site is located at the northeast corner of Myrtle Street and Raitt Street within a residential area. The nearest noise sensitive receptors to the Raitt Street Site are the adjacent residences to the northern and eastern property lines. An existing masonrywall approximately 6 feet in height separates the site and residential uses. There are also single-family residential units to the south across Myrtle Street, and west across Raitt Street, approximately 55 feet and 60 feet from the Site, respectively. 75C-105