CV Link and the Environment, part 2 noise

Noise

CV Link construction will expose people to excessive ground vibration or groundborne noise levels. Construction activities will occur between the permitted hours of each local jurisdiction’s Municipal Code. Large bulldozers within 100 feet of residences, schools, and similar sensitive areas will be minimized and avoided if possible. Residences, schools, and other sensitive land uses within 400 feet of planned pile driving will be notified of the construction in writing. Two alternatives to pile driving will be employed:

• Impact pile driving devices and Cast-In-Drilled-Hole (CIDH) piling methods will be used within 76 feet near the Thunderbird Channel and Deep Canyon Channel Bridge. Alternative piling methods such as Tubex piles, which can produce lower vibration levels (0.05 in/sec PPV at 25 feet), or other alternatives with equal or lower vibration levels are acceptable.
• CIDH piling methods or alternatives with equal or lower vibration levels will be used for five bridge locations: Highway 111 overcrossing, West Magnesia Canyon Channel Bridge at Highway 111, West Magnesia Canyon Channel Bridge at Library, Cook Street overcrossing,  and La Quinta Channel Bridge.

CV Link construction will result in a substantial temporary or periodic increase in ambient
noise levels. Construction activities will only occur during permitted hours of each jurisdiction’s Municipal Code. All construction equipment, fixed or mobile, will have properly operating and maintained mufflers. All stationary construction equipment will be position to emit noise away from the noise-sensitive receivers nearest the project site. Equipment staging areas will be located at the greatest distance between noise sources and noise-sensitive receivers nearest the project site. (Already 61 staging areas have been determined, as shown in the Alignments Map Book. The closest distance between a sensitive receptor to a staging area will be 30 feet.) Large bulldozer use within 100 feet of nearby residences and schools will be avoided if possible. Truck deliveries will be limited to the same hours specified for construction equipment by each local jurisdiction’s Municipal Code.