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common open space area upon demand by the Community Development Director after the 11th house is sold, if decided by the Homeowners Association; 2) the City shall review with the tentative map access to the detached garage and photovoltaic panels located on the Walterson property; and, 3) the timing of payment of the in-lieu park dedication fee and the pro-rata share to reconstruct Stanley Boulevard shall be approved by the Community Development Director. DISCUSSION The subject infill development has been designed in conformity with the General Plan and Downtown Specific Plan. The architectural style of the homes is appropriate for Downtown and the homes will be an attractive addition to the Stanley Boulevard area. A detailed analysis and discussion of the proposal is included in the attached Planning Commission staff reports dated July 13, 2011, and September 15, 2010, including: General Plan and Downtown Specific Plan conformity, zoning and uses, site design, demolition of the existing dwelling, traffic and circulation, parking, noise and vibration, grading, drainage, utilities, building design, house sizes and FAR, site development standards, Green Building, common and private open space, landscaping and fencing, tree removal and mitigation, and Growth Management. Noise and Vibration Train Horns Councilmember Sullivan requested that an addendum to the noise analysis for train horns be completed for the interior spaces of each of the proposed homes. The addendum is part of Attachment #4. It analyzed the noise levels for Lot 1, Lot 6, Lot 7, and Lot 8. As shown on "Table 1: Train Horn Interior Maximum Noise Levels, dBA" of the noise addendum, the operation of train horns will generate from 89 dBA to 112 dBA at a 75- foot distance from the train that STC 46 rated doors/windows will reduce interior noise levels by 41 dB for Lot 6, Lot 7, and Lot 8, the lots adjoining the railroad right-of-way; and that STC 28 rated doors/windows will reduce the interior noise levels by 20 dB for Lot 1 facing Stanley Boulevard. Table 2, below, copies a portion of the table in the noise addendum and shows the interior noise levels for train horns. Table 2: Interior Noise Levels Due to Train Horns/Whistles Lot Window STC Noise Interior Sound Level Interior Sound Level Rating Reduction (Master Bedroom) (Bedroom Two) 1 28 20 dBA 41 dBA to 64 dBA 52 dBA to 75 dBA 6 46 41 dBA 44 dBA to 67 dBA 51 dBA to 74 dBA 7 46 i 41 dBA 41 dBA to 64 dBA 45 dBA to 68 dBA 8 46 1 41 dBA 41 dBA to 64 dBA 51 dBA to 74 dBA The train horn sound levels of the Lot 1 Bedroom Two interior is louder than for Lot 6, Lot 7, and Lot 8 because the STC rating of the Lot 1 windows does not need to be as high in order to mitigate the train engine/wheel noise. Train horns are operated to warn motorists and pedestrians of an oncoming train and generate very loud noise levels lasting a short duration; for this reason, train horns cannot be effectively mitigated by Page 8 of 11