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SA-2 Pressure Control Station Relocation <br />and Transmission Main Improvements <br />RFP No. 21-127 <br />KEY DESIGN ISSUES <br />Successful implementation of the project will involve resolution of several key design issues. We <br />believe Tetra Tech has an excellent grasp of these issues based on our overall design experience as <br />well as the knowledge we have gained from our previous projects with the City and other nearby <br />agencies. <br />%.,,Ly Design Experiem t. <br />Members of our Project Team have completed more than 40 water/wastewater projects for the City <br />since 1999. Our Project Team knows the City's design requirements, standards, preferred materials, <br />and operational preferences which will allow us to complete the design in the most cost-effective <br />manner. A list of the relevant pipeline and pressure reducing stations that Tetra Tech has completed <br />for the City in the last five (5) years are included in the Relevant Experience Section of our proposal. <br />In addition, Tetra Tech has a unique understanding of this project since we prepared the SA-2 <br />Feasibility Study for the City. <br />riHenne uesiyii <br />Tetra Tech's previous experience will assist the City to successfully address the key pipeline issues <br />including: agency requirements; utilities; traffic control; alignment selection; minimize impacts to the <br />surrounding commercial and residential properties; and construction phasing. The proposed pipeline is <br />located within an arterial street, West 1 st Street. The following are examples of Tetra Tech's previous <br />pipeline design within busy arterial streets: <br />Bristol Street (City's Well 32 Rehabilitation Pipeline; SA-5 Vault Upgrades; and San Lorenzo Force <br />Main and Gravity Sewers); <br />French Street and Spurgeon Street (City's Water Main Improvements); <br />Edinger Avenue (OCWD's Mid -Basin Injection Wells); <br />MacArthur Blvd (Mesa Water's Well Pipeline); <br />Crown Valley Parkway (MNWD's Crown Valley Pipeline Replacements); <br />Katella Avenue, Disneyland/Conference Center (Anaheim's Katella WM Project); and <br />Newport and Balboa Blvds. (Newport Beach's Water Main Replacement). <br />Traffic control and the impacts to the surrounding commercial/school/residents access will be a major <br />concern of the City. The traffic control requirements shall be determined with the objective of providing <br />the contractor with adequate room for safety as well as efficient operation while providing the least <br />possible disruption to the traveling public. We believe traffic control is a key design element and will be <br />completed hand -in -hand with the design of the pipeline. <br />PRR anrd Hurdrn.rPnprafnr npcinn <br />Tetra Tech's previous experience with the City's PRS facilities (SA-7 Relocation, SA-5 Vault Upgrade) <br />as well as the SA-1 Hydro -generator replacement will allow us to quickly resolve any design issues and <br />deliver a complete design in the most cost-effective and timely manner. Tetra Tech understands the <br />City's operational, reliability and safety needs for the PRS and Hydro -generator Facilities due to our <br />previous work for the City on similar facilities. <br />TETRA TECH Page 16 <br />