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Draft coastal-resilience rules would bar new development in highest-risk shoreline zones
Summary
Presenters walked commissioners through proposed performance standards that would prohibit new development and new impervious surfaces in V and coastal A flood zones and restrict large hazardous-material storage; the rules would mainly apply to new construction and major renovations.
EASTHAM — At the July 22 work session Shannon Holst summarized the proposed coastal resiliency regulations that would apply within an expanded coastal resilience zone if the town adopts MCFRM mapping. The regulations are performance-based and written to be optional and modular: towns can apply only selected provisions.
Holst said key provisions include expanding jurisdiction to incorporate a 1% annual-chance flood with sea level rise (if the bylaw is adopted), requiring new development and major renovations to use best-available elevation data, and prohibiting new development or new impervious surfaces (pools, tennis courts) in V and coastal A zones. She also recommended prohibiting large-quantity hazardous-material storage in flood-prone areas and limiting rebuilding on sites that suffer two independent catastrophic coastal-storm losses.
Commissioners noted protections for historic structures are included in the draft and emphasized that existing undamaged structures would not be forced into compliance unless they undertake substantial repairs or replacement. The commission asked staff to circulate a consolidated draft that integrates the bylaw language and the regulations so members can start detailed line-by-line review at a future session.
