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Administrative Draft Environmental Impact Report Gill Medical Center Project intended purpose. Residential dwellings are of primary concern because of the potential for increased and prolonged exposure of individuals to both interior and exterior noise levels.Additional land uses such as hospitals, historic sites, cemeteries, and certain recreation areas are considered sensitive to increases in exterior noise levels. Schools, churches, hotels, libraries, and other places where low interior noise levels are essential are also considered noise-sensitive land uses. The Project is proposing the construction of an OSHPD Hospital, a full-service women's ABC facility, and an associated medical office building and associated features to be constructed in two phases.The nearest existing noise-sensitive land uses to the Project site are residences located directly adjacent to the proposed solid seven-foot-tall concrete masonry unit (CMU) wall along the southern site boundary and proposed driveway access from Eight Mile Road as well as residences located adjacent to the proposed driveway on North Ham Lane. 4.15.2.3 Existing Ambient Noise Environment The most common and significant source of noise in San Joaquin County is mobile noise generated by transportation-related sources. Other sources of noise are the various land uses (i.e., residential, commercial, agricultural and institutional) that generate stationary-source noise.The Project site is bound by the WID agricultural canal and agricultural land to the north, agricultural land and residents to the east, residents and East Eight Mile Road to the south, and West Land with agricultural land beyond to the west. The Project site is currently used for agricultural production of grapes. It is surrounded mainly by a mix of undeveloped/agricultural land with rural residents scattered about, including immediately adjacent the southern and eastern site boundaries. In order to quantify existing ambient noise levels on the Project site, ECORP Consulting, Inc. conducted a 24-hour noise measurement starting on September 9, 2020 and extending into September 10.Additionally, ECORP conducted five short-term noise measurements on the afternoon of September 9, 2020.The noise measurements are representative of the typical existing noise experienced within and immediately adjacent to the Project site and are depicted in Table 4.15-3. See Draft EIR Appendix H, Attachment A for Noise Measurement Locations. As shown in Table 4.15-3, the short-term ambient recorded noise levels range from 44.5 to 75.2 dBA Leq near the Project site.The long-term ambient recorded noise level was measured at 67.7 dBA CNEL.As previously described, environmental noise levels are generally considered low when the CNEL is below 60 dBA, moderate in the 60 to 70 dBA range, and high above 70 dBA. Therefore, the 24-hour noise measurement of 67.7 dBA CNEL suggests that the Project vicinity currently experiences moderate levels of noise.The most common noise in the Project vicinity is produced by automotive vehicles (e.g., cars, trucks, buses, motorcycles). Traffic moving along streets produces a sound level that remains relatively constant and is part of the minimum ambient noise level in the Project vicinity.Vehicular noise varies with the volume, speed and type of traffic. Slower traffic produces less noise than fast-moving traffic. Trucks typically generate more noise than cars. Infrequent or intermittent noise also is associated with vehicles, including sirens, vehicle alarms, slamming of doors, trains, garbage and construction vehicle activity and honking of horns.These noises add to urban noise and are regulated by a variety of agencies. Noise 4.15-8 October 2021