Kolb Grading handled large-scale grading and utilities (Sections 5/6) at Lambert International Airport in St. Louis. The contract, expanded by 500,000 cubic yards and reassigned to Kolb from other contractors because of its criticality to schedule and sequencing, included 7,500,000 cubic yards of unclassified excavation, 244,000 square yards of pavement removal, 667,000 square yards of cut compaction, high-precision finish grading across hundreds of acres, and erosion control over more than 600 acres.
Scope of Work
- Unclassified excavation of 7,500,000 cy
- Modification to contract for an additional 500,000 cy
- Reassigned to Kolb from other contracts, critical to schedule and sequencing
- 244,000 sy of pavement removal
- 667,000 sy of cut compaction
- 20,000 tons of rock subgrade stabilization
- 667,000 sy of finish grading to +/- 0.5 (total station & Trimble)
- 750,000 sy of finish grading to +/- 0.1
- 300-acre finish grade to +/- 0.2
- 452-acre seeding and mulching
- Erosion control of over 600 acres