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 Contractor shall keep a copy of the ESCP at the construction site at all times, for the duration of the contract, and the Contractor shall implement all BMPs per the CASQA Construction BMP fact sheets and as shown in the ESOP, unless granted approval by the Engineer. Failure to implement BMPs properly may result in enforcement actions taken against the Contractor, by the AGENCY. The ESCP shall remain in effect until project completion and final stabilization of the construction site (i.e. landscaping and final paving complete). Extra erosion and sediment control BMPs shall be available on -site in order to replace failed BMPs or to be implemented during storm events. The Contractor shall mitigate ALL non-stormwater discharges from the construction site, unless granted approval by the AGENCY. The area adjacent to the construction site shall remain free of sediment and shall be swept regularly to be kept clean. Payment for Erosion and Sediment Control Plan, including but not limited to the preparation of the ESCP, installation, repair, and replacement of BMPs, and inspections to verify proper BMP implementation shall be included in the other items of work involved and no additional compensation will be allowed therefore. 3-12.6.3 Storm Water Pollution Prevention Plan (SWPPP) Add the following to this subsection: Erosivity Waivers Projects that are smaller than 5-acres and occur during the dry season (i.e. May — September) may qualify for an Erosivity Waiver. The Engineer will determine if the project qualifies for an Erosivity Waiver and will notify the Contractor. The Contractor shall not assume the project qualifies for an Erosivity Waiver without consulting the Engineer. If the Engineer determines the project qualifies for an Erosivity Waiver, the Contractor shall submit an Erosion and Sediment Control Plan (ESCP) for review by the Engineer. The Contractor shall implement Best Management Practices (BMPs) per the California Storm Water Quality Association (CASQA) Construction BMP fact sheets and as shown in the approved ESCP, unless granted approval by the Engineer. The AGENCY will assist the Contractor with filing the Erosivity Waiver on the Stormwater Multiple Application and Report Tracking System (SMARTS) website. In the event the Erosivity Waiver expires and the project is not complete or the Erosivity Waiver is no longer valid (i.e. project area increases), the AGENCY will notify the Contractor and the Contractor shall comply with the National Pollution Discharge Elimination System (NPDES) General Permit for Stormwater Discharges Associated with Construction and Land Disturbance Activities (Order WQ 2022-0057-DWQ), as outlined below. 11