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III. ENVIRONMENTAL SETTING,IMPACTS AND MITIGATION MEASURES D. NOISE Increases m noise levels at the site would be related to the operation of collection, transfer and employee vehicles at the site and the operation of heavy-duty equipment. Table III.0-5 in the Traffic Circulation and Safety section compares the number of vehicles that are currently operated at the site against those that would be operated at the site on a typical day in the future (excluding Sundays). Nearby land uses are currently exposed to noise associated with the start up and idling of residential/commercial collection truck operations at the site. As shown in Table III.0-5,the majority of new vehicle activity at the site would be related to the use of transfer trucks to off-haul materials,roll-off trucks bringing new construction debris boxes to the site and off-hauling collected recyclables,residential greenwaste collection trucks, and public self-haul vehicles. In addition to increased truck activity,the project would increase waste processing activities and associated heavy equipment use at the site. The proposed screening, sorting, and processing associated with municipal waste, C&D wastes and materials recovery would generate substantial noise. The majority of these activities would occur within the transfer station building, whereas green waste processing activities would occur outdoors at the southeast corner of the project site. The transfer station building would be enclosed with the exception of the bays that provide truck access to the tipping floor. In addition,there would be two loadout chutes facing the southern boundary of the project site. Truck access to the loadout chutes would be approximately 15 feet below grade. Figure 11-2 in the Project Description shows the proposed layout of the facility. The configuration of the building on the site would aid in directing most of the noise from within the transfer station building away from residences and nearby industrial uses towards the center of the project site. Noise associated with green waste processing activities would occur outdoors and would include the use of a tub grinder, a bucket loader,an excavator and roll-off bins. The excavator and bucket loader would be used to load the tub grinder with green waste materials and to place ground materials into roll-off bins for off-site delivery. Noise associated with these activities would be most pervasive at industrial properties south and east of the project site. The transfer station building would provide the benefit of reducing noise associated with the greenwaste processing activities by blocking the line of sight between these activities and the residences west of the site on Temple Street. The potential for on-site project operations to affect adjacent industrial land uses and residences on Temple Street is discussed separately to account for the varying sensitivity of these land uses to noise. In both cases, the impact on ambient noise levels was compared to the applicable City noise/land use compatibility standards. For residential land uses on Temple Street,the existing noise environment is within the range of 61 to 66 DNL, with weekend noise levels being lower than the typical weekday. Residents at this location already experience a noise environment that is above levels recommended in the City's noise/land use compatibility guidelines. Weekday noise levels exceed 65 DNL. An increase of 1.5-DNL or more would be considered significant on such days. In order to capture the project's impact on the noise environment of adjacent residences,this analysis considers the project's impact on the noise environment on weekdays and weekends. Residences would be located at Stockton Sravenger Transfer Station Erpansion III.D.14 ESA 1990190