75D - PH ZONING ORD AND CUP CALIFORNIA PALMS

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2.3.2 California Noise Standards Most jurisdictions in California utilize the A-weighted 24-hour CNEL noise exposure criterion not only as a planning tool but require actual verification of dre ability to meet these standards as part of building plan approval process. These criteria are based on compatibility standards established by Departmem of Health Services' (DHS) Office of Noise Corrtrol and the U.S. Department of Housing and Urban Development (HLTD). The Office of Noise Control has established land use compatibility criteria that serve as guidelines for assessing the compatibility of differem types of land uses based on the existing community noise level. These guidelines include specific exterior noise exposure standards for commercial, industrial, office, professional, and public recreation ~ land uses. The model guidelines are shown in Figure 1. The denotation of a land use as "normally acceptable" implies that conventional constnrction that does not incorporate any special acoustical treatment may be used. In general, evaluation of land uses that fall taro the i "conditionally acceptable" or "normally unacceptable" ttoise environments should include consideration ofthe type of noise sowces, the sensitivity of the noise receptor, the noise reduction likely to be provided by structures, and the degree to which the noise source may interfere with speech, sleep, or other activities characteristic of land use. The California Noise Insulation Standard, codified in Title 24, Part 2, Appendix Chapter 35, Section 3501 of the CCR, sets specific limits on the interior noise exposure level within muhi-faznily residential developments and noise insulation requirements though the common partitions separating differerrt dwelling units within a muhi- family residemial developmem. Avery similar set of noise standards is also contained in the Appendix Chapter 12 of the UBC, as adopted by the State and the City. The application of We California Noise Insulation Standard is defined within it's scope as follows: "The purpose is to establish uniform minimum noise insulation performance standards to protect persons within new hotels, motels, dormitories, long term care facilities, aparune~ houses, and dwellings other than detached single-family dwellings fmm the effects of excessive noise." In accordance with the California Noise Insulation Standard (Title 24), interior noise levels attributable to exterior f noise sources shall not exceed 45 d$A in any habitable room. The noise metric shall be either the Day-Night average Sound Level (Ldn) or the Community Noise Equivalent Level (CNEL), consistent with the noise element of the local general plan, The Title 24 noise standard. is defined as the combined effect of all noise sources and is ! implemented when existing or future exterior noise levels exceed 60 dBA CNEL. 2.4 Eristing Setting 2.4.1 Field Measurements The project site lies along the east side of Harbor Boulevard south McFadden Avenue. While the parcel is cnrrenfly occupied by the California. Patens Motel and includes 207 units. The project is located in a commercial area. A residential area is located to the immediate east of the facility and the facility buffers Harbor Boulevard traffic noise from these residems. To ascertain existing noise levels within the project area, field monitoring was conducted by Synedecology from Wednesday, February, 16 to Thursday, February 17, 2005. The field survey noted that the project area is typical of an urban area and most noise was due to road traffic along Harbor Boulevard. Aircraft noise is also common to the area. 5 75D-125