BART Weir / Rubber Dam 1 Fish Ladder Workshop
March 12, 2009
Hanson Environmental, Inc.
Agenda
• Project Goals
• Introduction of Project Team
• Background
• Schedule
• Environmental Process
• Fish Ladder Design Criteria
Goals
• Provide fish passage for adult steelhead and salmon to migrate through the flood control channel to Alameda Creek
• Provide fish passage for smolts and kelts to migrate to the bay
• Maintain the beneficial uses of the flood control channel (flood protection, water supply, groundwater percolation, recreation)
• Be mindful of the economic impacts to our customers
Project Team
Winzler & Kelly • Project Management•Structural Design •Civil Design
Kosmo• Fish passage design, hydraulics
Mike Love & Associates • Fish passage design, hydraulics, hydrology
Kleinfelder• Geotechnical
Hanson Environment• CEQA• Biological Assessment
Status and Schedule
Bunting Pond Fish Screen
Rubber Dam 2 Decommissioning and Foundation Modification
Rubber Dam 2 Decommissioning and Foundation Modification
Status and Schedule:Facility Current Status Project
CompletionGrant Funding / Cost Sharing
Total Project Cost
Screens at Upper Rubber Dam
Complete March 2008 $500,000 NFWF $3,641,300
Lower Rubber Dam Removal and Notch
Advertising for Construction
2009 $500,000 NFWF $1,547,800*
Bunting Pond Fish Screen
Advertising for Construction
2009 $600,000 Prop 50 Grant (on hold)
$1,698,300*
BART Weir/Middle Rubber Dam Fish Ladder
Geotech complete
Prelim Design – in progress
CEQA/BA – Start March 2009
2010 $500,000 NFWF
ACWD/ACFC sharing project cost
$5,400,000*
Upper Rubber Dam Fish Ladder
Geotech complete
CEQA / BA – Start March 2009
2011 or 2012 $500,000 NFWF $2,500,000*
Kaiser and Shinn Fish Screen
Preliminary design –begin mid‐2009
2012 or 2013 $6,238,000*
*Estimated Cost
Alameda Creek Fisheries Restoration Workgroup
Reduced Vertical Slot
Pool and Chute
Roughened Channel
Flood Control Channel Hydrologic Conditions
• Summer – Flows off the watershed are approximately 10‐15 cfs, ACWD imports are 10‐35 cfs
• Winter– Flows are flashy (rise and recede quickly, within hours)
Rubber Dam / Diversion Operations
• Storm Event– Critical stream flow Qc is determined; typically between 700 cfs and 1200 cfs
– Monitor flows at Arroyo de la Laguna at Verona and Alameda Creek at the Welch Gage
– Diversions are closed
– Dams are deflated
– Dams remain down for a minimum of 24 hours
Vertical Slot Fish Ladder
• Accommodates targeted life stage – in migrant adult steelhead and salmon
• Passable at a range of flows
• Self‐Controlling
• Better suited to accommodate multiple entrances needed for water supply operations
BART Weir/Rubber Dam 1 ScheduleMilestones to date
• ACFC&WCD and ACWD Agreement – July 2007• Winzler & Kelly contract for Preliminary Design –September 2008
• Geotechnical work for fish ladders – November 2008• Fish ladder alternatives analysis – December 2008 and January 2009
• Hanson contract for Environmental Work – March 2009
• Pre‐workshop meeting with NOAA – March 6, 2009• Workshop with Workgroup – March 12, 2009
Moving Forward
• Complete Preliminary Design – August 2009
• Complete CEQA – June 2009
• Complete Biological Assessment – July 2009
• Permit Applications – September 2009
• Complete Final Design – January 2010
• Construction – Summer / Fall ‐ 2010