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3. Environmental Checklist
<br />muffler, motorized scooter, machine or mechanical device or other contrivance or facility unless
<br />such motor, engine, automobile, motorcycle, sweeper, vacuum, public address system, whistle
<br />muffler, motorized scooter, machine or mechanical device is enclosed within a sound insulated
<br />structure so as to prevent noise and sound from being plainly audible from any residential
<br />property line.
<br />Loud Music in Parks. The use of electronic equipment, including but not limited to amplifiers,
<br />radio loudspeakers, phonographs, tape amplifiers, electronically operated or acoustic musical
<br />instruments or other device of like design used for producing sound in or upon any public street,
<br />park or grounds, or any other open area to which the public has access, whether publicly or
<br />privately owned, between the hours of 10 p.m. and 9 a.m. is unlawful. At any other time of day,
<br />such equipment may not be used in a manner which disturbs the peace, quiet and comfort of
<br />neighboring residents or persons of normal sensitivity who are using such areas.
<br />Construction of the Proposed Project will lead to variable noise levels, influenced by the specific types,
<br />numbers, and usage duration of various construction equipment. This temporary construction will
<br />elevate noise levels in the vicinity of the Project, which is adjacent to a shooting range and industrial
<br />park already characterized by a variety of noise sources, including heavy equipment operation,
<br />vehicular traffic, and industrial processes. The expected equipment for this project includes a dump
<br />truck, front end loader, dump truck, bulldozer, roller, skid steer, water truck, and handheld tools. Table
<br />3-7 presents the typical noise levels for comparable pieces of heavy equipment. Under a worst -case
<br />scenario, where all equipment is operational simultaneously at one location, the noise level could
<br />reach approximately 91 A -weighted decibels (dBA).
<br />Table 3-7. Typical Construction Equipment Noise Emission Levels45
<br />CONSTRUCTION EQUIPMENT NOISE LEVEL (DBA, LEQ AT 50 FEET)
<br />Bulldozer 85
<br />Roller 74
<br />Truck 88
<br />Combined Noise Level 91
<br />Noise sensitive land uses include residential, mobile home parks, motels and hotels, schools,
<br />libraries, churches, hospitals, and nursing and convalescent homes. There are no noise sensitive land
<br />uses in the vicinity of the Project site. The nearest noise sensitive land use is a residential community
<br />located over 1,300 yards southeast of the Proposed Project site.
<br />Assuming a worst -case construction noise level of 91 dBA at 50 feet, the attenuated maximum
<br />construction noise at a distance of 1,600 feet would be approximately 53 dBA. As stated above,
<br />existing industries in the vicinity of the Proposed Project currently generate noise at a similar or above
<br />decibels range than that proposed during construction. Therefore, noise generated during construction
<br />of the Proposed Project would not be out of character for the area and would be below ambient
<br />45 Federal Transit Administration, Office of Planning and Environment. 2006. Transit Noice and Vibration Impact Assessment (FTA-VA-90-
<br />1003-06). Available at www.transit.dot.gov
<br />San Leandro Treatment Wetland
<br />IS/MND
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