A Design-Build Success Story

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Landfill Gas Migration Control

• A Design-Build Success Story
• Dick Sprague
• HDR, Inc.

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Purpose Background

• Design-Build Project Delivery
• Emerging delivery system in public sector
• Single source of responsibility
• Faster, less contentious delivery
• Not necessarily cheaper
• Landfill
• Historic landfill cell began in early 1950s
• New, lined landfill cell began in late 1990s
• Landfill gas migration discovered in 2001

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Landfill Site
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Landfill Gas Migration

• Anaerobic decomposition
• Predominantly methane and carbon dioxide
• March 2001 monitoring
• High concentrations of Lfg at property boundary
• gt1,000 feet beyond property boundary
• May 2001
• Issued engineering RFP
• Informed state agency neighbors

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Extent of Contamination
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Design-Build Project

• Too little time for traditional design-bid-build
• 2-part contract
• Several form contracts
• AGC, AIA, EJCDC
• DBIA is fairest to all parties
• 2-Part form contract includes
• Terms Conditions
• Scope
• Price Schedule

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Design-Build Project (cont.)

• Part I - Concept Design Proposal
• 30 Design
• Proposal for Part II
• Firm, fixed price based on bids
• Drilling subcontractor
• Equipment supplier
• Balance of construction contractor
• Documents Belong to Owner
• Negotiate with Part I contractor
• Bid the work
• Cancel the project

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Design-Build Project (cont.)

• Part II
• Final Design
• Construction, Start-up Warantee
• Firm schedule based on WES commitments
• Contract (part II) signed on September 27
• Completion planned for December 14
• Best Value Selection

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Design-Build Project (cont.)

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Design-Build Project (cont.)

• Performance
• Drilling subcontractor failed to perform
• Primarily his lower tier subs
• Third lower tier sub required to complete project
• Flare station operational December 14, accepted
  December 18
• 60 percent of wells operational on December 18
  met commitment to state agency
• Final completion January 18

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Design-Build Project (cont.)

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Design-Build Project (cont.)

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Design-Build Project (cont.)

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Design-Build Project (cont.)

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Design-Build Project (cont.)
Event Planned Actual
Engineering Contract June 18 July 20
Construction Contract October 1 September 27
Begin Construction October 15 October 2
System Startup December 18
System Complete December 15 January 18

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Design-Build Project (cont.)

• Lump Sum Price
• Change Orders
• Net Price

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Design-Build Project (cont.)

• Lump Sum Price
• Change Orders
• Net Price

• 929,367
• ( 25,129)
• _________
• 904,238

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Questions?
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Design-Build Project (cont.)