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Due Diligence and Contamination Management on Design Build Projects

Cyrus Parker, LG, PE, CPM

North Carolina Department of Transportation

Lesson Learned

Reduce Risk

Maintain Accountability

Meaningful Bids

And

Successful Projects

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NC Design Build Project History

102 Projects

39 Low Bid and Others

4 Turnpike Projects

59 Conventional

Projects

NC Design Build History

Conventional Projects With GeoEnvironmental Scopes of Work

40%

60%

Yes

No

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Due Diligence by the Department

• Identify Sites of Concern• Estimate Risk Level of Each Site

Related to the Project

Phase I

Planning

• Design Recommendations• Right of Way Recommendations

Phase II Investigation

• Remove Underground Storage Tank• Remove Contaminated Soil

Phase III Remediation

IIIIII

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First Design Build Scope of Work

Department Design Build Team

Design Build Teams’ Response

Questions

How can we bid a

Lump Sum

Too Many UnknownsConcerns

Very High Risk

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First Design Build Scope of Work

Department Design Build Team

Final Scope of Work

Department Design Build Team

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Adjusted Low

BidderManagement

Responsiveness

Long Term Maintenance

Schedule And Milestones Innovation

Quality

Aesthetics

Warranty

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1978 Aerial

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1987 Aerial

2007Aerial

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Contamination Management

Landfill

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Reduce Risk

Maintain Accountability

Meaningful Bids

and

Successful Projects