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Approve Change Order No. 1 to Contract No. 5733 with Southwest Pipeline and Trenchless Corp. for Construction of District 02 Trunk Sewers Group 2 Rehabilitation (Project); Resulting in Payment of $457,725 for Extra Work
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Summary: As part of the Project, the contractor was required to rehabilitate approximately 14,058 feet of 8-inch to 18-inch-diameter corroded concrete sewer pipe with a cured-in-place pipe liner system. During construction, Districts’ staff discovered three adjacent vitrified clay pipe (VCP) sewer lines with cracks and with aging link pipe repair sleeves that are prone to failure. Due to the severity of the pipe damage, the risks associated with the link pipe repair sleeves, and the close proximity of the sewers to the ongoing work, it was determined that the most expedient and cost-effective approach to repair these sewer lines was to direct the contractor to rehabilitate them as part of the Project. This item is consistent with the Districts’ Guiding Principles to protect financial and facility assets through prudent investment and maintenance programs; and commitment to operational excellence (protection of public health and the environment, regulatory compliance, and cost effectiveness).