14 ATTACHMENT 07 - Laserfiche WebLink

Initial Study and Negative Declaration ground borne vibration or ground borne noise levels? c) A substantial permanent increase in ambient noise X levels in the project vicinity above levels existing without the project? d) A substantial temporary or periodic increase in X ambient noise levels in the project vicinity above levels existing without the project? e) For a project located within an airport land use plan X or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels? f) For a project within the vicinity of a private airstrip, X would the project expose people residing or working in the project area to excessive noise levels? DISCUSSION a. The project site is located within the future (2025) 70 dBA Ldn noise contour along Santa Rita Road, and the 65 dBA Ldn noise contour along W. Las Positas Boulevard as indicated in the 2005 - 2025 Pleasanton General Plan. This noise level is considered to be "Normally Acceptable" for "Office Buildings, Business Commercial, and Professional" land uses according to the Pleasanton General Plan. With respect to potential noise impacts generated by the proposed project, the City's Noise Ordinance (Chapter 9.04 of Pleasanton Municipal Code) does not allow any person to produce any noise or allow any noise to be produced by any machine, animal, device, or any combination of the same, on commercial property, in excess of 70 dBA at any point outside of the property plane. A Noise Assessment report was prepared by Illingworth & Rodkin, Inc. for the proposed drive-through carwash component of the project. Noise measurements were taken at the project site and its vicinity between November 22, 2013, and November 25, 2013. The noise measurements taken at approximately 35 feet from the exit of the proposed carwash had a day-and-night average of 63 dBA on weekdays and 61 dBA on weekends. With the proposed carwash, the anticipated noise level approximately 22 feet from the carwash exit would be 75.5 dBA, exceeding the noise limits established by the Noise Ordinance. The report indicated that to meet the City's Noise Ordinance, the proposed drive- through carwash should include either: 1) an AeroDry Systems quiet dryer system or equivalent, and 2) IVS Power Vacuum System or equivalent. In addition, a noise barrier approximately eight feet in height and 55-60 feet in length, in the form of a wall or a fence with two solid wood layers rigidly connected, should be constructed to reduce the noise level and bring the 35