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2.U ENVIRONMENTAL CHECKLIST Additional equipment likely to be used includes welding machines, air compressors, and various air- and electric-powered hand tools. There are no sensitive receptors (e.g., residences or schools) in the vicinity of the WPCP or the Monarch Bay Golf Complex. The land uses in the vicinity of the WPCP are mainly industrial, including the Davis Street Transfer Station. In addition, a rifle range is located to the south. The Metropolitan Golf Links Course is located to the north of the WPCP. The Monarch Bay Golf Complex is located in an recreational area on the eastern side of Neptune Drive. Marina Pazk/Paz Course and San Leandro Marina are located on the western side of Neptune Drive. The neazest sensitive receptors are located over 0.5 Irides to the east. Pipeline installation would use standard open-cut trenching and bore and jack methods. Pipeline installation would not occur within 500 feet from the nearest residences. At this distance, the noisiest construction equipment could be as high as 80 dBA without mitigation. Noise at these levels would significantly above current levels, but would be temporary and relatively short in duration. The pace of construction would move noise sources on a daily basis as portions of the pipeline are completed. Construction of the pipeline would occur at an average rate of 200 feet per day. As shown on Table 1-2, bore and jack method is expected to occur at one location, the drainage channel on the WPCP. If dewatering is required, jack and bore construction would require the use of a generator running 24-hours a day. While construction at the jacking and receiving pits, including construction and demobilization is expected to take 8 to 12 weeks, it is expected that 24-hour/7 days a week work would require approxilxlately two to three weeks. No residences are in the area of the WPCP. Construction hours are not normally restricted outside of residential areas but in special circumstances construction hours will be established as a condition of issuance of an encroachment permit8 Overall Project construction would temporarily increase ambient noise levels. The increase in ambient noise levels would have a temporary impact on nearby noise-sensitive residential areas. Without mitigation, the temporary and intermittent noise levels from construction activities would constitute a significant impact. Implementation of the Measure N-1 would reduce potential noise impacts associated with construction activities to less-than-significant levels. These measures include limiting construction hours in or nearby residential areas, and the use of controls on construction equipment. The operation of the proposed recycled water facilities would not involve noise-generating equipment, and therefore would not cause a substantial permanent increase in ambient noise levels. Thus, the operational impact on ambient noise levels is considered less-khan-significant, e,f) The Project is located within two miles of Oakland International Airport. The temporary construction noise resulting from the Project would not expose people residing or working in the Project area to excessive noise levels. Implementation of Measure N-1 would reduce potential noise impacts associated with construction activities to aless-than-significant level. MITIGATION MEASURES Measure N-1: The following measures shall be implemented to minimize potential noise impacts during construction: 8 As an example: If this Project will be under construction during the time a special event was taking place on Monarch Bay Drive (e.g., the Cherry Festival) the project may be prohibited from construction during the event. San I~andro Recycled W atcr Project 2-3 $ FSA / 7A3193 Ihafr IS/1vIND