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City of Santa Ana On -Call Engineering Services (RFP No. 23-030) Storm Drain Improvements If tasked to perform storm drain improvements, we will first determine the scope of the storm drain improvement project. This will involve identifying the areas of the storm drain system that need to be upgraded, replaced, or expanded. We will then develop design alternatives that meet the project goals and address the identified issues. This may involve evaluating different pipe sizes, materials, and configurations, as well as the location and design of inlets and other stormwater management features. Once a preferred design alternative has been selected, we will prepare detailed construction plans and specifications. This will involve creating detailed drawings that show the location and dimensions of the proposed storm drain system, as well as any required appurtenances such as manholes and catch basins. Specifications will also need to be developed that outline the materials and construction methods to be used. This service area may also include hydraulic modeling of stormwater collection systems. The task would involve performing analyses and calculations to determine drainage area size/characteristics, anticipated flow rates/volumes, impacts to existing drainage systems, and project sizing using a variety of approved/preferred models/software. Sidewalks and Bike Paths CWE has developed plans for sidewalks and bike paths throughout southern California. Our plans will incorporate specific features that promote safety, accessibility, and ease of use. This may include features such as crosswalks, pedestrian signals, bike lanes, and curb ramps, where necessary, that conform with accessibility requirements from the ADA. Pavement Management, Street Improvement, and Repair CWE's award winning civil design work includes street improvement and pavement replacement projects. This task will include curb and gutter replacement, slurry seal, repair and overlay of asphalt concrete streets, repair and replacement of Portland cement concrete streets. Signing and Striping Signing and striping plan sheets typically include information such as the location of signs and pavement markings, dimensions and placement of each sign and marking, and any special notes or details about the design. Additionally, they may include information about the materials to be used, the construction schedule, and any necessary traffic control measures during construction. Special Engineering Studies, Reports, and Investigations We have produced many special engineering studies and reports over the years, encompassing the vast array of civil engineering design work. These include flow monitoring studies, water quality analyses, traffic studies, water quality management plan effectiveness studies, irrigation and landscaping condition analyses, erosion control analysis, sewershed needs assessments, and many, many more. Sustainable Infrastructure Services Sustainable infrastructure design services refer to the planning, design, and construction of infrastructure systems that promote sustainability and resilience while minimizing negative -16- CWE.