Final Environmental Impact Report - Whittier Bridge/I-95 ...

Whittier Bridge/I-95 Improvement Project FEIR
Chapter 3.0: Mitigation and Commitments
measured noise levels that exceed or approach the recommended construction noise limits shown in
Table 3-1 will be mitigated.
Table 3-1:
Construction Noise Limits
Existing Noise Level (L10,dBA) Noise Limit (L10,dBA)
Site
Receptor Address
Daytime Nighttime Daytime Nighttime
1 8 Curzondale Court 68 64 75 69
2 93 Clipper Way (Village at Newburyport) 63 61 75 66
3 16 Laurel Road 67 63 75 68
4 525 Main Street #4 (Whittier Point Condos) 68 64 75 69
5 503 Main Street #18 (Hawkswood Estates) 68 64 75 69
6 57 Old Merrill Street 63 59 75 64
7 47 Rabbit Road 78 74 83 77
8 25 Lena Maes Way 69 66 75 71
9 24 Locust Street 73 68 78 73
10 4 Natowich Way 68 65 75 70
Noise mitigation measures to reduce construction noise will include both general and task-specific
control measures. General ―best practice‖ noise control measures will be employed whenever
possible to reduce noise at its source, along the pathway, or at the receptor location directly.
Examples of best practice mitigation options include:
Source Controls
- Time Constraints – prohibiting work during sensitive nighttime hours;
- Scheduling – performing noisy work during less sensitive time periods;
- Equipment Restrictions – restricting the type of equipment used;
- Emission Restrictions – specifying stringent noise emission limits;
- Substitute Methods – using quieter methods/equipment when possible;
- Exhaust Mufflers – ensuring all pieces of equipment have quality mufflers installed;
- Lubrication and Maintenance – maintaining equipment to ensure quieter devices;
- Reduced Power Operation – using equipment of only necessary size and power;
- Limit Equipment On-Site – having only necessary equipment on-site; and
- Noise Compliance Monitoring – performing community noise monitoring for compliance.
Pathway Controls
- Enclosures – encasing localized and stationary noise sources; and
- Increased Distance – performing noisy activities farther away from receptors.
Receptor Controls
- Community Participation – involving affected resident through open dialog; and
- Noise Complaint Process – creating the ability to log and respond to noise complaints.
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