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City of Santa Ana On -Call Engineering Services (RFP No. 23-030) impacts on the environment and society. With our deep knowledge and experience with green infrastructure design in southern California, our aim is to create long-lasting, cost-effective infrastructure systems that benefit present and future generations. We have experience designing bioretention facilities and vegetated swales for the City in public spaces including parks and street parkways. We celebrate the fact that the City of Santa Ana is a leader in Orange County in terms of implementation of green infrastructure design, and we are always happy to assist the City with these elements. Transportation and Traffic Engineering Neighborhood Traffic Studies Neighborhood traffic studies start with the collection of traffic data through various methods such as traffic counting and speed studies. Traffic counting can be done using traffic counters or manual observation, while speed studies can be conducted using speed radar guns or speed cameras. Once the data is collected, we will analyze the collected data to identify traffic patterns, peak hours, and locations with high volumes of traffic or speeding. This can help to identify potential safety hazards and areas in need of traffic calming measures. Traffic Signal Modifications Common traffic related problems experienced by many cities include traffic accidents, congestion, pedestrian and bicycle accidents, and other delays at intersections and roadways. The City may need to upgrade both the east -west and north -south oriented major roads for, not only signal timings, but also the signal system to manage the forecasted increase in traffic and provide for safety of all users. Upgrading of signal system using ITS tools, signal communications and applying basic transportation/urban planning/traffic engineering elements for improving the street safety both for the vehicle and pedestrians to achieve the multi -modal goals of the City. Structural Analysis CWE has produced structural analysis and calculations for bridges, culverts, and retaining walls. Our approach may include performance of structural load ratings on primary members of bridges, as well as analysis of retaining walls and culvert structures. The load rating will factor in the results of our on -site bridge condition inspection and measurements. Our team is also capable of checking for seismic code compliance for existing structures including site specific seismic Response Spectra Analysis following the latest Caltrans Seismic Design Criteria (SDC) manual. Geotechnical Analysis During preliminary engineering, geotechnical engineering services support will be completed. As part of the geotechnical engineering; subsurface exploration and testing, foundation and slope stability, liquefaction potential, infiltration rates, and over -excavation and re -compaction recommendations are just a few of the tasks our team can provide for a project as -needed. A typical geotechnical engineering tasks will include (1) Project Planning, (2) Site Characterization, and (3) Geotechnical Engineering. General tasks include (1) Project Initiation and Coordination, (2) Field Work, (3) Laboratory Testing, (4) Engineering Analysis/Report Preparation, and (5) QA/QC. -17- GE.