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’
Type of Construction work
Mitigation measures
1
1-ton pickup trucks
68
65
62
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
82
79
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
71
68
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
82(79)
79(73)
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
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
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
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
Pavement repair
An after-hours noise complaint telephone number will be available to residents.
9
Flat bed/Cement mixer trucks
83
80
77
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
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
66
63
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
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
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
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
82
73
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
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
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
58
Structure Construction
An after-hours noise complaint phone number will be available to residents.
19
Pneumatic power tools
67
55
Partial demolition of existing structures.
An after-hours noise complaint phone number will be available to residents.
20
Saw-cutting machines
85
73
Partial demolition of existing structures.
An after-hours noise complaint phone number will be available to residents.