Fountaingrove Environmental Impact Report - City of Santa Rosa ...
Fountaingrove Environmental Impact Report - City of Santa Rosa ...
Fountaingrove Environmental Impact Report - City of Santa Rosa ...
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4.0 MITIGATION MONITORING AND REPORTING PROGRAM<br />
TABLE 4-1<br />
Mitigation Monitoring and <strong>Report</strong>ing Program<br />
Documentation<br />
Additional Permit<br />
Enforcement<br />
Implementation<br />
Schedule<br />
<strong>Impact</strong>s Mitigation Measures Responsible<br />
Party<br />
larger or continuous gaps at the base and have a<br />
minimum surface weight <strong>of</strong> 3.0 pounds per square<br />
foot (lb/ft 2 ).<br />
• Screw-type compressors should not be specified at<br />
the Project, due to the tonal nature <strong>of</strong> the noise<br />
emitted. However, if screw-type compressors cannot<br />
be avoided, the following measures may be<br />
necessary to attenuate tonal noise emissions:<br />
− Wrap all compressors with 1–inch-thick fiberglass<br />
or closed cell foam insulation. The wrap needs to<br />
completely enclose the compressors and all<br />
refrigerant piping.<br />
− Wrap this insulation with a noise barrier jacket,<br />
preferably metal (mass-loaded vinyl is also<br />
acoustically acceptable but may not weather well).<br />
This barrier jacket material should be selected for<br />
a nominal face weight <strong>of</strong> 0.5-1 lb/ft 2 . The noise<br />
barrier jacket should have a minimal size and<br />
number <strong>of</strong> openings.<br />
− Make the noise barrier jacket serviceable with<br />
provisions in the jacket fabrication for access to<br />
the service valves (suction and discharge) and<br />
other normal access ports. The jacket should also<br />
be made so that it may be removed and replaced<br />
without destruction <strong>of</strong> the insulation.<br />
− Insert silencers (pulse diffusers) in the compressor<br />
discharges to attenuate compressor discharge<br />
noise.<br />
Install a bank <strong>of</strong> acoustical louvers at the air intakes with<br />
an insertion loss <strong>of</strong> greater than or equal to 12 decibels at<br />
500 hertz to control intake noise.<br />
<strong>Impact</strong> 3.10-3: The Project could result in an increase in noise from construction activities. Mitigation Measure 3.10-3: Implement BMPs during <strong>City</strong> <strong>of</strong> <strong>Santa</strong> During<br />
N/A Written Certification <strong>of</strong> BMP installation.<br />
construction.<br />
<strong>Rosa</strong><br />
development <strong>of</strong><br />
Construction <strong>of</strong> the Project would increase noise levels in the vicinity <strong>of</strong> the Project site and<br />
Department <strong>of</strong> plans and<br />
Project Plans and specification to adopt<br />
along transportation corridors used by construction equipment and workers during the<br />
• Construction Scheduling. The following measures<br />
Community specifications.<br />
noise-reducing BMPs.<br />
construction period. Equipment generating noise during construction includes jackhammers, will be implemented to limit construction related<br />
Development<br />
backhoes, trucks, and grading and paving equipment. The Noise Study in Appendix O <strong>of</strong> this activities to the portion <strong>of</strong> the day when the number<br />
Draft <strong>Environmental</strong> <strong>Impact</strong> <strong>Report</strong> (EIR) provides information on typical noise levels at<br />
<strong>of</strong> persons in the adjacent residential uses is lowest: Construction<br />
construction sites. Noise produced by construction activities would be audible and exceed<br />
− Limit construction hours between 7:00 AM and Contractor<br />
existing noise levels in the vicinity <strong>of</strong> the Project site during the construction period,<br />
7:00 PM, Monday through Saturday<br />
designated Noise<br />
constituting a significant but temporary noise impact.<br />
− Do not allow machinery to be cleaned past Disturbance<br />
6:00 PM or serviced past 6:45 PM Monday Coordinator<br />
through Friday<br />
− Limit the allowable hours for delivery trucks to<br />
8:30 AM—5:00 PM, Monday through Friday<br />
• Construction Equipment Mufflers and Maintenance.<br />
Properly muffle and maintain equipment powered by<br />
internal combustion engines.<br />
• Idling Prohibitions. Prohibit unnecessary idling <strong>of</strong><br />
internal combustion engines. Equipment should be<br />
turned <strong>of</strong>f when not in use.<br />
• Equipment Location and Shielding. Locate stationary<br />
noise-generating construction equipment such as air<br />
compressors as far as practical from nearby<br />
residences and other noise-sensitive land areas. If<br />
equipment cannot be located away from residences,<br />
temporary noise barriers, such as mass-loaded<br />
construction blankets, should be installed around the<br />
equipment during its use.<br />
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