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PUC presents draft EIR for Lower Crystal Springs Dam improvements; DSOD‑required upgrades outlined
Summary
San Francisco Public Utilities Commission presented the draft EIR for hydraulic upgrades at Lower Crystal Springs Dam required by the Division of Safety of Dams (DSOD). The project would raise parapet walls, widen the spillway and enlarge the stilling basin to restore restricted reservoir levels; construction must be timed to avoid biological windows and the rainy season.
The San Francisco Public Utilities Commission and consultants presented the draft environmental impact report for the Lower Crystal Springs Dam improvements, an engineering program required by the California Division of Safety of Dams (DSOD) to address a hydraulic deficiency identified in 1983. The DSOD restriction had reduced operating levels at the reservoir by eight feet; the project would restore capacity by raising the parapet, widening and raising the spillway and constructing a much larger…
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