Southwest Lehigh Substation

Below-Grade Work

Site Location

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

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

Caissons & Pads

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

Conduit and Cable Trench

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

Ground Grid

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

Relay Vault

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

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

Staff Recommendation

• Low bidder: McLaren Construction

• Longstanding relationship

• Performed work at North Trail, Trafalgar, Lake Trafford, and Corbett substations.

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.