75D - PH ZONING ORD AND CUP CALIFORNIA PALMS

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_ , ~ ~ Environmental Checklist For CEQA Compliance (Synectecology 2005:13). Mitigation Measures N-1 through N-4 would reduce impacts associated with the increase in dBA contours in the interior habitable spaces to below a level of significance. N-1 All rooms will include forced air ventilation allowing the residents to leave windows closed reducing interior noise level. N-2 The developer will specify a minimum Sound Transmission Class (STC) rating of 29 for all window and/or door assemblies that front Harbor Boulevard (west facing). These windows and/or doors are to be well fitting with vinyl (or equivalent) gaskets that form an airtight fitting. I N-3 All exterior fittings that enter the structures (e.g., electrical conduits, HVAC ducts) along Harbor Boulevard will be sealed with caulk such that the fittings are rendered airtight. Any metal ductwork that is exposed to the exterior I environment will be enclosed and insulated to avoid noise transference j through the ducting. N-4 Any in-room air conditioning units placed along Harbor Boulevard will be placed in baffled enclosures reducing transmitted noise, but allowing airflow. B. Less Than Significant Impact. The proposed project would involve the renovation and operation of an existing motel. Construction would be limited primarily to hand tools and no large-scale use of heavy equipment would be required. Additionally, no excessive groundborne vibrations or groundborne noise would be created by the operation of the proposed project (Synectecology 2005:14). Though the project would not result in a significant noise impact from construction activities, Mitigation Measures N-5 through N-8 are recommended as project enhancement measures to minimize noise generated during the construction phase of the project. These measures are additional to adherence to existing codes. N-5 All construction equipment will be in proper operating condition and fitted with standard factory noise attenuation features. All equipment will be properly maintained to assure that no additional noise, due to worn or improperly maintained parts, would be generated. N-6 Approved haul routes will be used to minimize exposure of sensitive receptors to potential adverse noise levels from hauling operations. N-7 To the degree feasible, construction equipment will be sited away from adjacent residential land uses. N-8 Hydraulic hammer attachments used in pavement and structure demolition will be equipped with a silencing package. C. Less Than Significant Impact. The project includes the conversion of an existing motel to a transient residential hotel. Based on the trip generation value provided by RK Engineering and using the Caltrans Sound32 Noise Model, it was found that the increase in noise related to the increase in traffic associated with the change of land use designation is so small as to be immeasurable (i.e., less than 0.5 dBA CNEL) (Synectecology 2005:14). This is less than the significance criterion 3 dBA; i California Palms May Initial Study/Mitigated Negative Declaration 3-25 JSS @96.0] 75D-82