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Executive Summary <br />17.13. - Page 11 <br />16UT w <br />on�� <br />qW <br />�ryLYCnlLty 6 eAWJ Wr&d <br />ES.6.2 Seismic Vulnerability Assessment <br />A seismic assessment was performed for all key pump stations and tanks, and for pipelines to <br />identify current vulnerabilities and develop recommended improvement programs. The <br />evaluation used a benefit -to -cost ratio (BCR) analysis, where any project with a BCR greater <br />than one was considered a priority, as the benefits outweighed the costs. <br />Table ES -3 summarizes the four programs (Seismic Improvement Programs (SIP) 1 through 4) <br />that were developed. Because a significant seismic event may occur within the 20 -year Master <br />Plan timeframe, projects identified in SIP 1 through 3 (the three groups with BCR greater than 1) <br />are important for maintaining LOS. <br />W E S T Y Q S T A S S O C I A T E S ES -7 City of Redwood City <br />September 201 1 Water System Master Plan <br />o \c \369 \06- 09- 01 \wpAmpA052610_0ES <br />Table ES -2. Summary of Recommended Capacity Programs <br />P <br />Descrip <br />Alleviates the highest risk capacity deficiencies. Includes pump <br />station improvements and new storage to provide for operational <br />needs and address most deficient areas for fire flow where current <br />CAP -1 <br />flows are 500 gpm and less in the Hillside Area, and 2,000 gpm or <br />$17.3 <br />less in the downtown and Seaport areas. These projects form the <br />City's highest priority projects. CAP -1 is recommended for <br />completion within the Master Plan timeframe. <br />Further reduces risk and includes approximately 7 miles of <br />additional pipeline improvements needed to further improve fire <br />flows to alleviate areas where fire flows are 1,000 gpm or less, <br />CAP -2 <br />primarily in the Hillside Area. These projects are also <br />$20.1 <br />recommended for completion within the Master Plan timeframe if <br />funding is available. This program also includes additional storage <br />in Main City Zone. <br />Includes the longer -term improvements that are needed to correct <br />system deficiencies in the Main City Zone, and to provide a new <br />CAP -3 <br />emergency pump station for the Hillside Area. Although important <br />$4.9 <br />to meeting LOS Goals, these programs, could be implemented <br />beyond the 20 -year Master Plan timeframe. <br />This program includes improvements to meet future growth in the <br />downtown area and Seaport Area. The majority of improvements <br />are new pipelines to meet a fire flow criterion of 6,000 gpm for new <br />CAP -FU <br />development in commercial and industrial areas. These programs <br />$34.3 <br />will be funded by new development. Projects in this program <br />represent budget placeholders, as specific project needs will be <br />assessed as developments are approved. <br />Total <br />$76.6 <br />ES.6.2 Seismic Vulnerability Assessment <br />A seismic assessment was performed for all key pump stations and tanks, and for pipelines to <br />identify current vulnerabilities and develop recommended improvement programs. The <br />evaluation used a benefit -to -cost ratio (BCR) analysis, where any project with a BCR greater <br />than one was considered a priority, as the benefits outweighed the costs. <br />Table ES -3 summarizes the four programs (Seismic Improvement Programs (SIP) 1 through 4) <br />that were developed. Because a significant seismic event may occur within the 20 -year Master <br />Plan timeframe, projects identified in SIP 1 through 3 (the three groups with BCR greater than 1) <br />are important for maintaining LOS. <br />W E S T Y Q S T A S S O C I A T E S ES -7 City of Redwood City <br />September 201 1 Water System Master Plan <br />o \c \369 \06- 09- 01 \wpAmpA052610_0ES <br />