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ON -CALL ENGINEERING SERVICES L, Water Ftecovrces-Opllrn,/\ UNDERSTANDING OF NEED Introduction and Background The City intends to retain Civil Engineering Consultants on an as -needed or "on -call" basis, On an on -call, as -needed basis, the selected consultants may later be asked to provide professional engineering services proposals on specific, project -by -project basis, based on an agreed -upon specific scope of services and fees, The consultant shall be able to assist the City through this contract to provide the necessary engineering services, The consultant shall utilize in-house staff and/or subconsultants to complete the assignments to meet the City standards. For specialized work for which the prime consultant shall require a subconsultant, the prime consultant shall serve as an administrative liaison between the City and the suboonsultant, Prime consultant mark-ups for subconsultant work W I t be allowed. Tetra Tech is submittingt our proposal for Water Resources — Option A projects. Scope of Servlc= Water Resources — Option A The City is seeking proposals for the designand construction support services for the Santa Ana Water Project. The Water Project includes the rehabilitation of an existing water well approximately 30 years old, and the design of 1,500 feet of'I2-Inch PVC water main and 600 feet of 15•inch sewer main within an arterial street. "The City is looking for recommendation regarding the pipe material for the sewer main improvements. Currently, the well is connected to an existing onsite reservoir. However, the City desires to have the well pump directly to the City's distribution system. This well is a sand producer, and currently the capacity has dropped by 35% of Its maximum yield of 2,000 gpm. The depth of the well Is approximately 1,100 feet; it has a vertical turbine pump with a 250 hp motor. In addition, the screens are made of mild steel. No video or any other preventive maintenance has been done in the past 15 years. The City is looking for the options for rehabilitation and potential benefits of each option, Approach Tetra Tech fully understands your project. We are offering an outstanding team, which combines the experience, depth, and understanding needed for the successful delivery of this project. Our core principles establish how we plan to work together with the City to complete this project: Service: Tetra Tech puts its clients first. We listen to and better understand our clients' needs and deliver cost-effective solutions that meet those needs. Our philosophy is to "Do it Right," Value: Tetra Tech takes on our clients' problems as if they were our own. We develop and implement real world solutions that are cost-effective, efficient, and practical. Excellence: Tetra Tech brings superior technical capability, disciplined project management, and excellence in safety and quality to all of our work, Opportun;ty: Our people are our number one asset, Our workforce is diverse and includes leading experts in our fields. Our entrepreneurial nature and commitment to success provides challenges and opportunities. Tetra Tech is committed to providing the City with the high quality service you expect and deserve. Our strength lies in our proven track record that has led to successful completion of multi -projects for the City, as well as other nearby agencies. City of Santa Ana • 7 - TETRA TECH