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Maintaining Recharge to Springs and Seeps Downgradient from Residential Developments

Maintaining Recharge to Springs and Seeps Downgradient from Residential Developments. An Analysis From Bodega Bay, California. Challenge: End calls late during environmental review

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Maintaining Recharge to Springs and Seeps Downgradient from Residential Developments

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  1. Maintaining Recharge to Springs and Seeps Downgradient from Residential Developments An Analysis From Bodega Bay, California

  2. Challenge: End calls late during environmental review Challenge: Design characterization and mitigation monitoring program sufficiently robust to allow for changes in the project or in the hydrogeology Critically Important: Use of multiple lines of evidence Challenge: Evaluate to precisions of 1-3 gpm Expect: Findings that both prior-season’s rainfall and wet-dry epicycles affect wetland Challenge: Prepare for monitoring which may stretch over 10-15 years Main Points

  3. Water Budget Results • Dry Year: 10.5 acre-feet (5 inches/acre) • Normal Year: 26.0 acre-feet (12.5 inches/acre) • Wet Year: 36.2 acre-feet (17 inches/acre)

  4. Conclusions • Embed the ground-water professional early in all assessments of wetlands and riparian habitats. • Multiple lines of evidence are needed to validate • Multiple lines of evidence are needed for resilience of mitigation monitoring • Prepare for project durations of 10 to 15 years

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