Riley Sess3 101309

HIDDEN DAM, CA - Dam Safety Program Dam Safety Modification Study Adam Riley, P.E. Project Manager USACE Sacramento District (SPK) October 27, 2009

Presentation Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Hidden Dam, CA

Hidden Dam Typical Cross Section

Random Fill Select Fill Core Shallow DcG Fresh/Slightly Weathered Bedrock Gross Pool El. 540 Deep DsG Blanket/Chimney Drain Seepage Blanket

Safety of Dams – Policy and Procedure (ER 1110-2-1156) DRAFT 10 July 2009 ,[object Object],[object Object],[object Object],[object Object],[object Object]

Dam Safety Modification Studies and Documentation (Chapter 9) ,[object Object],[object Object],[object Object],[object Object]

Screening Portfolio Risk Assessment (SPRA) ,[object Object],[object Object],[object Object],[object Object]

SPRA ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SPRA Findings ,[object Object],[object Object],[object Object],[object Object]

Seepage concerns from the beginning

Current Seepage Investigations

Spillway ,[object Object],[object Object]

Seismic Considerations Intake Control Tower ,[object Object]

Dam Safety Modification Project Ongoing and Near-term Efforts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Path Forward ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],HIDDEN DAM, CA - Dam Safety Program Dam Safety Modification Study

Riley Sess3 101309

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Riley Sess3 101309