Item 07 - Sewer System Management Plan 2025 Update

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CITY OF SANTA ANA APPENDIX I PROJECT NO.: XX-XXXX PROJECT TITLE Contractor shall prepare a detailed bypass pumping plan for any temporary handling of sewage. Contractor shall be responsible for all aspects of the mobilization, set up, operation, management, monitoring, maintenance operation, pressure testing, spill containment, and spill management including clean up. When bypass pumping flows, the Contractor shall have at least one designated person on site 24 hours per day to operate, monitor and maintain the bypass pumping system and implement the spill prevention and control procedures. For manhole bypassing, the Contractor shall install and operate a flow bypass system that shall limit the flow to zero (0) flow within the channel by using a bypass flow through tube for both rechanneling of the manhole base and when connecting to the existing sewer manhole. The Contractor shall develop a Spill Prevention, Control and Countermeasure Plan (SPCCP) which shall include the following items: • Identify all equipment, materials and labor necessary to prevent sewage spill in the event there is a sewage leak during bypassing of sewers. • A description of the Contractor's plan to respond to a sewage spill should it occur. • The plan shall include a step by step procedure on how the equipment, materials and labor will be mobilized and implemented in the event of a spill. • Describe handling of sewage flow during a bypass system failure. • A plan identifying existing storm drains and materials used to block the openings in the event of a spill. • As a minimum, include the following emergency overflow response equipment: a minimum of 10-feet of pipe of each size and type used on the bypass system together with matching repair couplings; rubber matting to overlap storm drain inlets by a minimum of 24-inches on all sides; for inlets in traffic, the grating removed and wrapped with rubber sheeting and reinstalled; a minimum of one 48- inch wide by 36 foot long roll of rubber matting and the equivalent of eight cubic yards of sandbags in a pre -loaded truck ready for use in addition to the materials required to cover storm drain inlets; and temporary sewer and storm drain plugs to manage collection and disposal of any sewage overflows. The Contractor shall prepare an Odor Control Plan identifying and locating any potential construction activities that might produce odors. The plan shall describe the means of mitigating the odors and identifying all materials, equipment and systems the Contractor is planning to use. Potential nuisance odor areas shall include open manholes, and open sewers where gases may be present or can be released. During bypass pumping, manholes