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Published byAva Brassington Modified over 9 years ago
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Bart Bretherton, RG Region 2 Hazmat Coordinator Lessons Learned from Unanticipated Cleanup on a Preservation Project (a tale of whoa)
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Defining Factors During Project Development January 2004 Project starts Scoped as Pavement Pres job No hazmat anticipated Expected completion- one const. season Midpoint in project development Project expands with addition of SWIP Funds Dec 2005 Hazmat Phase 1 requested by R/ W and Project Leader May 2006 Project let R/W develops area of take
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Consequences of Unanticipated Hazmat to Project Construction Project completion time severely impacted Almost doubled! Significant increase in volume of materials to be managed and disposed 50 tons estimated; 967 tons actually removed Saturated soil increased actual tonnage and management issues Additional subcontractors necessary Licensed tank removal contractors and continual hazmat supervision Unanticipated hazmat issues were 40-50% of total cost overrun $600K over engineer’s estimate
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Lesson Learned: Involve Hazmat in Early Scoping and Part 3 Dev Issue: Part 3 did not recognize and/or include possible hazmat sites. Easily retrievable public documents were not reviewed. Notable site characteristics were not evaluated for impact to the project. Resolution: Essential to include the Region Hazmat Coordinator in review and preparation of Part 3.
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Lesson Learned: Beware of Project Scope Creep Issue: Addition of SWIP funds in the middle of the project development seriously impacted the Part 3 hazmat evaluation. Required property acquisition and trenching. Should have triggered a full Phase 1 earlier.
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Issue: Late hazmat evaluation prevented needed Phase 2 work. Phase 2 would have greatly increased ability to evaluate the financial impacts and constructability of the project. Phase 2 would have produced more accurate info than RP supplied site information. A lack of characterization resulted in incomplete 00290 special provisions. Resolutions: The 2005 implementation of PD-02 helps to limit scope creep. Hazmat review should continue through entire development process up to PS&E. Don’t just “check the box” as completed – read the report! Lesson Learned: Beware of Project Scope Creep cont.
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Lesson Learned: Obtain Cost Sharing Agreements with Property Owners ASAP Issue: Too many property owners and multiple agencies involved. No time to negotiate agreements and assign liability or; Litigate responsibility. Resolutions: Leave sufficient time to interact and negotiate with property owners. Develop well-defined cost recovery process.
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Lesson Learned: It’s Not Over Until It’s Built Issue: Contractor did not have sufficient special provisions. Resolution: Make sure to have all special provisions for increased project flexibility.
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In Closing: There are some things that are fun to dig up. (Petroleum contaminated soil is not one of them!)
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