T.F. Green Airport Improvement Program - FEIS Chapters - PVD

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationTable 4-4Measured DNL for the Short-term Primary 1 and Secondary 2 Noise Measurement SitesSite Address and/or Description DNL (dB) Lmax (dB)Primary SitesP1 155 Gertrude Ave, Warwick 71 104.4P2 137 Glen Drive, Warwick 58 82.7P3 67 Commodore Avenue, Warwick 72 98.6P4 82 Louisiana Avenue, Warwick 56 80.2Secondary SitesS1 49 Winman Court, Warwick 62 88.1S2 65 Alice Avenue, Warwick 60 91.9S3 103 Rosegarden Street, Warwick 68 86.7S4 267 Manolla Avenue, Warwick 58 81.9S5 17 Wilbur Street, Warwick 63 85.1S6 3 148 Grace Street, Cranston 59 93.6S7 276 Spring Green Drive, Warwick 60 84.3S8 71 Collingwood Drive, Warwick 59 86.6Source: HMMH, 2005, 2006.Note: Refer to Figure 4-2 for the noise measurement locations.1 Primary sites were in operation for the entire duration of study (August 8, 2005, to August 15, 2005).2 Secondary sites were each in operation for at least a 24-hour duration.3 No data for Site 6 was collected during the initial collection period.DNL Day-Night Average Sound Level.4.2.2.3 Vehicular Traffic NoiseVehicular traffic noise levels for the Baseline Condition were modeled at seven additional sites using anFHWA-approved noise prediction model. As shown in Table 4-5, measured “Traffic-only” (L eq) ranged from alow of 51 dBA along Astral Street in the Hoxsie neighborhood (Site R2) to a high of 73 dBA along Main Avenuein the Greenwood neighborhood (Site R5). Observed sources of noise at each of the measurement sites includedtraffic on the existing roads, aircraft operations, birds, wind in the trees, and other community-related activities.At measurement sites in quieter locations that are farther from major roads (such as Site R8), contributions fromaircraft and other noise sources can be greater than the contributions from vehicular traffic on local streets,resulting in greater differences between the Total and the Traffic-only noise levels. As shown in Table 4-5, themeasured Total Leqat Site R8 was 61 dBA, while the Traffic-only Leqwas 55 dBA. Aircraft noise was the majornoise source at this site during this short-term monitoring program.Chapter 4 – Affected Environment 4-11 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH04_Affected_Env_JUL_2011.doc