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May 14, 2014
RAMSHORN POND DAM
REHABILITATIONPUBLIC INFORMATION SESSION
PARE CORPORATION, FOXBORO, MA Allen R. Orsi, P.E., Managing Engineer
Toe Drain Impacts Reviewed improvements provided by downstream toe drain Existing Seepage Exit Gradient Factor of Safety = 1.2 With Toe Drain Exit Gradient Factor of Safety = 2.0 Dam safety practice designs for a Factor of Safety = 5.0
ADDITIONAL EVALUATIONS
Opinions of Cost
Significant cost impacts associated with contingencies and early stage of design
ADDITIONAL EVALUATIONS
Recommended Approach Upstream Cutoff Wall
Durability Permittability Schedule Drawdowns
ADDITIONAL EVALUATIONS
Control of Water Drawdowns Bypass / Flow Maintenance Cofferdams
Construction Phasing
Detours / Road Closure
Public Access Information / Signage
ADDITIONAL DESIGN CONSIDERATIONS