Big Dalton Dam and Reservoir Sub-drain Extension, Sediment Removal and Sluice Gate Stem Rehabilitation, LA & San Dimas Spreading Grounds Restoration Puddingstone Diversion Dam & Reservoir Sediment Removal
Award Date:
03/22/07

Completion Date:
04/10/08

Award Amount:
$5,721,775
Customer/Owner Name: Los Angeles County Department of Public Works
LA County Construction, Mehrji (Mitch) Malganji

Description: This CJW project included extensive, clearing/grubbing, water diversion, dewatering, processing 200-thousand tons of sediment, on-site and off-site production hauling on switch-back mountain roads, scaling, traffic control, geotextile/Rip Rap, RCP, shoring, Subdrain System, cut/fill/fine-grade earthwork, road construction, sub-drains, filter material, reinforced concrete structures, weir gate, sluice gate, trash rack retrofit, silt fence, security fence, hydroseeding, etc.   All subject work was performed incident/accident free, on-time and under budget.

This CJW project also included extensive, clearing/grubbing, water diversion, dewatering, processing 210,000-thousand tons of sediment, on-site and off-site production hauling, scaling, traffic control, geotextile/Rip Rap, stripping, 80,000-cy cut/fill/fine-grade earthwork, piezometer, sub-drains, filter material, 24-ea reinforced concrete structures, weir gates, trash rack retrofit, hydroseeding, etc.   All subject work was performed incident/accident free, on-time and under budget. 

Challenges: In total CJW obtained over 200,000 tons of submerged, difficult to handle sediment, dewatered and transported it off-site for several miles.  CJW ensured continuously high production at 8,000 ton per shift.  All work was performed for a Government Agency under strict environmental standards (LA County), requiring prompt and accurate paperwork flow.  The project was a huge success for all involved.  Additionally, this project was successfully completed during the second wettest seasons ever recorded.  

In total CJW obtained over 300,000 tons of submerged, difficult to handle sediment, dewatered and transported it off-site for several miles.  CJW ensured continuously high production at 8,000 ton per shift.  All work was performed for a Government Agency under strict environmental standards (LA County), requiring prompt and accurate paperwork flow.  The project was a huge success for all involved.  Additionally, this project was successfully completed during the second wettest seasons ever recorded.
BIG DALTON DAM & & SAN DIMAS SPREADING GROUNDS RESTORATION
C J W   C O N S T R U C T I O N,   I N C.
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