Section 3: Anticipated Hazardous Materials Encountered during Construction

This section covers hazardous materials identified during earlier phases of the project development process, where preventive action has been incorporated into the project and/or provided for in the PS&E.

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Coordination is necessary between the prime construction contractor and specialty contractors, consultant(s) and other subcontractors, to avoid duplicated activities or unnecessary downtime. Typically, a specialty contractor or subcontractor under the guidance of an environmental consultant will execute preventive action while working with the prime construction contractor under the overall control of the engineer. Effective coordination between these parties and their work is important. A Pre-Bid Conference and Partnering should be considered. The engineer should also consider phasing (whether part of the original contract or not) to minimize scheduling conflicts between the prime construction contractor and specialty contractors.

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Implement Provisions and Oversight

During construction, the provisions for worker and public safety, as well as handling and disposal of hazardous materials or waste, must be implemented. The contract may provide special compliance requirements for the handling, treatment or transportation of hazardous materials, worker qualifications and safety practices. These special provisions should be highlighted so the contractor and inspectors are aware of them from the beginning. Specialized oversight provisions will require the participation of consultants or environmental agencies.

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The District Construction Office and the engineer are primarily responsible for generating and maintaining a thorough record. During construction, any actions taken for the sub-items related to preventive action must be documented. Appropriate reports conclude the preventive action phase of the project.

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