75A - PH MACARTHUR PLACE SOUTH - SKYLINE TOWERS

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MARCH 23, 2009 PAGE 11 OF 17 61. Prior to issuance of grading permits, the project developer shall submit a final drainage plan to the City identifying the exact size and location of drainage facilities. 62. Prior to issuance of grading permits, the project developer shall provide proof of an NPDES permit from RwQCB to the City for onsite dewatering activities. 63. Prior to issuance of building permits for tenant improvements for restaurant uses, the project developer shall ensure that the proposed restaurants are fitted with grease interceptors to the size and capacity as designated by the City of Santa Ana Building Division. 64. Prior to issuance of building permits, building plans shall reflect the construction of noise barriers to ensure an exterior noise level of 65 CNEL or less around patios and balconies that are considered open space by the City of Santa Ana. The barriers shall be constructed of materials that provide a surface density of at least four pounds per square foot and shall be continuous (without gaps or gates). The height of the barriers shall be sufficient to reduce the exterior noise level to a CNEL of 65 dB or less, and shall be determined by a qualified acoustical consultant as part of the final engineering design of the project. 65. Prior to issuance of building permits, building plans shall specify the STC rating of windows and doors for all residential land uses. Window and door ratings shall be sufficient to reduce the interior noise level to a CNEL of 42 dB or less, and shall be determined by a qualified acoustical consultant as part of the final engineering design of the project. 66. Prior to building occupancy, mechanical ventilation shall be installed at the proposed condominiums and residential towers since the interior CNEL standard of 42 dB is to be met with all windows and doors closed. 75A-105