HomeMy WebLinkAbout40 equipment Noise minimizationTypes of vehicles - anticipated noise levels – Mitigation measures planned to minimize the impact. Item # Equipment Sound level (dBA) at 50’ Sound level (dBA) at 100’ Sound level (dBA) at 200’ Sound level (dBA) at 300’ Type of Construction work Mitigation measures 1 1-ton pickup trucks 68 62 56 53 Supports various construction activities. The sounds from pick-up trucks would have a volume and sound similar to that of existing nighttime traffic from the freeway. The Contractor will avoid parking and idling vehicles next to residences. An after-hours noise complaint telephone number will be made available to residents. 2 Dump trucks 85 79 73 70 General construction operations Construction equipment sounds emitted from this mobile operation will likely will be noticeable by residents during nighttime operations but dissipated as the dump truck moves along completing tasks. Ambient sensitive backup alarms are required and truck tailgate banging is not allowed. An after-hours noise complaint telephone number will be available to residents. 3 Paving machines 74 68 62 59 Paving operations. Construction equipment sounds emitted from this mobile operation will likely will be noticeable by residents during nighttime operations but dissipated as paving machines move along completing tasks. Ambient sensitive backup alarms are required and truck tailgate banging is not allowed. An after-hours noise complaint telephone number will be available to residents. 4 Planing grinder 85 79 73 70 Paving operations Construction equipment sounds emitted from this mobile operation will likely will be noticeable by residents during nighttime operations but dissipated as planing grinder machines move along completing tasks. Ambient sensitive backup alarms are required and truck tailgate banging is not allowed. An after-hours noise complaint telephone number will be available to residents. 5 Air compressor 68 62 56 53 Pavement repair and Support various construction activities. Equipment will be parked outside of the line of site from residences and temporary noise shields will be used when feasible. An after-hours noise complaint phone number will be available to residents. 6 Asphalt saw cut. 85 79 73 70 Pavement repair and ITS loop placement An after-hours noise complaint phone number will be available to residents. 7 Portable Light plants and generators 64 58 52 49 Paving operations and support various construction activities. The Contractor will be required to redirect temporary lights away from residences and avoid parking and idling vehicles next to residences. The contractor will be required to provide shielded generator type portable lights. An after-hours noise complaint telephone number will be available to residents. 8 Compaction Rollers and Hand compactor for pavement repair 77 71 65 62 Pavement repair An after-hours noise complaint telephone number will be available to residents. 9 Flat bed/Cement mixer trucks 83 77 71 68 Paving operation and support various construction activities. Sounds emitted from this stationary operation will likely will be noticeable by residents during nighttime operations. Ambient sensitive backup alarms are required and truck tailgate banging is not allowed. An after-hours noise complaint phone number will be available to residents. 10 Truck Mounted Attenuators 68 62 56 53 Paving operations and support various construction activities and traffic control. Traffic control drivers will park at least 500’ away from residences, when feasible. An after-hours noise complaint phone number will be available to residents.
11 Sweeper 69 63 57 54 Paving operations Residents will notice this mobile operation while the equipment is moving along the highway completing their task so the sound will dissipate as they move along from the sensitive receiver. The sounds from the sweeper would have a volume and sound similar to that of existing nighttime traffic from the freeway. 12 Stripe removal 76 70 64 61 Removal existing pavement striping or pavement markers Residents will notice this mobile operation while the equipment is moving along the highway completing its task. The sound will dissipate as the stripe removal equipment moves along and away from the sensitive receiver. 13 Stripe grinder 82 76 70 67 Placing of MMA Durable and visible delineation Residents will notice this mobile operation while the equipment is moving along the highway completing its tasks so the sound will dissipate as they move along and away from the sensitive receiver. 14 Auger & Hollow Stem drill rig 85 79 73 70 Drilling for installation of soldier pile wall, subsurface exploration, and for luminaire An after-hours noise complaint phone number will be available to residents. 15 Medium size excavator 85 79 73 70 May be used in wall footing excavation An after-hours noise complaint phone number will be available to residents. May be used in wall and shaft excavation. 16 Small excavator 85 79 73 70 May be used in trenching An after-hours noise complaint phone number will be available to residents. May be used for trenching. 17 Horizontal Directional Drills 82 76 70 67 May be used for directional boring An after-hours noise complaint phone number will be available to residents. May be used for trenching. 18 Cranes 70 64 58 55 Structure Construction An after-hours noise complaint phone number will be available to residents. 19 Pneumatic power tools 67 61 55 52 Partial demolition of existing structures. An after-hours noise complaint phone number will be available to residents. 20 Saw-cutting machines 85 79 73 70 Partial demolition of existing structures. An after-hours noise complaint phone number will be available to residents.