Item 18 - Traffic Signal Installation at Segerstrom Avenue and Rosewood Avenue

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CITY OF SANTA ANA SPECIFICATIONS PROJECT NO.: 25-6030 TRAFFIC SIGNAL INSTALLATION AT SEGERSTROM AVENUE AND ROSEWOOD AVENUE • For gravity bypasses, the plans shall include locations of temporary flow -through plugs, sewer plugs and bypass discharge piping. • A description of how the bypass system will be controlled and operated. Describe the method of control, the procedure and time requirements for switching to the standby equipment and alarm notification. • Capacities of pumps, prime movers and standby equipment. Design calculations proving adequacy of the bypass system and selected equipment. • Standby power source for bypass pumping. • Staffing plan for maintaining equipment for 24-hour continuous, reliable operation on weekdays and/or weekend days. • Noise and Odor Control Plan. • Plan showing the existing sewer line and the proposed points of flow interruption and/or flow diversion. • Construction time schedule showing anticipated times of flow interruption and/or flow diversion. • Spill Contingency Plan detailing precautions to be implemented to prevent sewage spills including specific responses and control measures to follow during an overflow resulting from breakage or blockage and maintenance and inspection schedules to detect potential problems to mitigate the potential release resulting from overflows, bypass pipe ruptures, and blockages. The Contractor shall provide temporary pumps, conduits, and other equipment to bypass the sewer flow. Engine -driven pumps shall be equipped with mufflers and/or shall be enclosed to keep the noise level within the City's Noise Ordinance. Pumps and bypass lines shall be of adequate capacity and size to handle the flows. Bypass duty and standby pumps shall be designed for raw sewage applications, resistant to ragging, and capable of passing a 3-inch solid sphere. Pumps shall be self -priming with suction lift sufficient to avoid sewer surcharge. The self -priming system shall allow the pump to start dry and run dry without causing damage. Pumps may be equipped with a vacuum assisted self -priming device. Any orifice designed to discharge air during pump priming shall be connected to a portable activated carbon scrubber. All engines shall be critically silenced for sound control and regardless of noise level, soundproofing shield not less than eight feet high shall be provided around each engine to absorb noise. 100% standby pumping shall be provided. Standby pump shall be sized to match the duty pump. Standby pumping equipment shall be at the site continuously during bypassing to provide standby pumping capacity. 109