Laserfiche WebLink
Project Banjo - Existing Noise Assessment <br />November 27, 2024 - Page 4 <br />Note that a water fountain is located in the pond behind the residence at 1953 Eagle Trail and was a <br />noticeable source of noise near LT 1 during daytime and nighttime hours. <br />To assess existing noise conditions at noise-sensitive land uses near the Project Banjo site, two long- <br />term noise measurements were collected for a 24-hour duration from May 13, 2024 to May 14, 2024. <br />Larson Davis LxT Type 1 Precision Integrating Sound Level Meters were set up at two long-term <br />monitoring locations near the Project Banjo site. One meter was placed northwest of the site, <br />th <br />adjacent to the multi-use path between Eagle Trail and 20 Avenue S, and the second meter was <br />placed southwest of the site, east of the residence located at 1965 Center Street. Long-term noise <br />measurement hourly Leq values obtained in the field ranged between approximately 42 dB(A) and <br />59 dB(A). The long-term noise field data of each monitoring site is summarized in Table 2. <br />Table 2. Long-term Noise Measurement Data <br />24-hr Average Average <br />L Daytime Nighttime <br />eq <br />Measurement <br />Noise L Noise L Noise <br />Setup Location Description <br />eqeq <br />Time <br />Level Level Level <br /> <br />\[dB(A\] \[dB(A\] \[dB(A\] <br />Northwest of Project Banjo site, <br />8:00 PM (5/13) Î <br />on multi-use path between <br />LT 1 56.4 56.6 56.1 <br />8:00 PM (5/14) <br />th <br />Eagle Trail and 20 Avenue S <br />Southwest of Project Banjo site, <br />8:00 PM (5/13) Î <br />east of residence at 1965 <br />LT 2 51.6 52.4 49.5 <br />8:00 PM (5/14) <br />Center Street <br />Note that aberrant noise events from intermittent landscaping equipment activity near LT 2 was <br />removed from consideration since it did not represent ambient noise in the area. <br />The measurements were taken using the A-weighted scale and are reported in decibels \[dB(A)\]. Data <br />collected by the noise meters included time, average noise level (Leq), maximum noise level (Lmax), <br />and instantaneous peak noise level (Lpk) for each interval. Hourly average noise levels (Leq(h)) were <br />derived from the Leq values. The existing noise measurements were collected under meteorologically <br />acceptable conditions and were conducted based on the acceptable collection of existing noise level <br />readings. Pictures of each field monitoring setup are shown in Table 3, and the locations of the <br />monitoring sites are shown in Figure 2. <br /> <br />kimley-horn.com <br /> <br /> <br />