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SFPUC lays out $4.3 billion plan to seismically upgrade regional water system; planning commission to take comments on PEIR
Summary
SFPUC and City planning staff presented the draft program environmental impact report for a city-led Water System Improvement Program aiming to harden reservoirs, pipelines and tunnels against major earthquakes, including a proposed Calaveras Dam replacement and a southern-bay tunnel. Environmental groups urged tighter analysis of proposed Tuolumne River diversions.
San Francisco Public Utilities Commission officials presented commissioners and the public with a detailed outline of the Water System Improvement Program and the Planning Department’s draft Program Environmental Impact Report, emphasizing seismic reliability and system-wide repairs. Susan Leal, SFPUC general manager, said the presentation was an opportunity to explain how the regional system works and why a coordinated program is necessary. Tony Irons, SFPUC deputy general manager, described program goals and a design basis for projects that aim, after a major quake, to restore basic water service within 24 hours and full service within 30 days.
The program that the PUC and planning staff brought forward bundles roughly 77 projects including pipeline rehabilitation, a new Calaveras Dam just downstream of the existing structure, a transmission tunnel…
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