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Southwest Lehigh Substation
Below-Grade Work
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Site Location
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Work to Be Done
• Install high- and low-side caissons for structural steel
Fifty-six (56) caissons of various sizes
Total of 300 cubic yards of concrete
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Work to Be Done
• Install high- and low-side caissons for structural steel
• Install concrete pads for breakers, regulators and capacitor bank
Eleven (11) breaker pads
Four (4) regulator pads
One (1) capacitor bank pad
Total of 66 cubic yards of concrete
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Caissons & Pads
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Work to Be Done
• Install high- and low-side caissons for structural steel
• Install concrete pads for breakers, regulators and capacitor bank
• Install conduit and cable trench
2,980 feet of 2” PVC
700 feet of 4” PVC
400 feet of cable trench
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Conduit and Cable Trench
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Work to Be Done
• Install high- and low-side caissons for structural steel
• Install concrete pads for breakers, regulators, and capacitor bank
• Install conduit and cable trench
• Install ground grid
Install 8,600 feet of 4/0 copper grounding conductor
Install 3,256 feet of ground rods (407 8’ rods)
Install 353 exothermic welds
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Ground Grid
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Work to Be Done
• Install high- and low-side caissons for structural steel
• Install concrete pads for breakers, regulators, and capacitor bank
• Install conduit and cable trench
• Install ground grid
• Construct relay vault
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Relay Vault
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Bidders List
• Aubrey Silvey Enterprises, Inc. Carrollton, Georgia
• Kent Power Inc. Kent City, Michigan
• PowerTown Line Construction St. Petersburg, Florida
• JL Malone & Associates, LLC Albany, Georgia
• McLaren Construction West Palm Beach, Florida
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Bid Results
McLaren Construction $640,323.00
Bidder 2 Higher Bid
Bidder 3 Higher Bid
Bidder 4 Higher Bid
Bidder 5 No Bid
NOTE: LCEC Engineering Estimate for Scope of Work - $720,000
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Staff Recommendation
• Low bidder: McLaren Construction
• Longstanding relationship
• Performed work at North Trail, Trafalgar, Lake Trafford, and Corbett substations.
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Board Action Requested
Requesting a motion authorizing the CEO to sign a contract for below-grade work and relay vault construction of the Southwest Lehigh Substation
with McLaren Construction in the amount of $640,323.00.
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