60" WASTEWATER REHABILITATION FROM TRINITY RIVER TO ROCHESTER SWPS

The project involves the trenchless rehabilitation of approximately 5,150 linear feet of a 1950s-era 60-inch reinforced concrete pipe wastewater gravity line extending from the west side of the East Branch of the Trinity River eastward to near the Rochester Stormwater Pump Station in South Dallas. Approximately 4,790 linear feet will be rehabilitated using Machine Spiral Wound Liner technology, while the section crossing the Trinity River—where the pipeline is exposed to river flow—will be addressed with CIPP followed by HDPE slip lining. Flow control during construction will be managed through coordinated diversion using the upstream DWU Sunbeam Diversion Structure, in strict accordance with the Flow Control Provisions outlined in the contract drawings. The entire alignment lies within the FEMA Regulatory Floodway and is subject to periodic flooding, and portions of the work are located within or adjacent to the USACE Lamar Levee Extension Project Area and the Rochester Levee, both subject to federal jurisdiction. The pipeline also parallels an Oncor High Voltage Transmission Tower ROW and crosses active UPRR and TXDOT right-of-ways, requiring careful coordination. All existing manholes are steel-reinforced concrete and will be either replaced, reconstructed, or rehabilitated as needed. Contract performance requires strict adherence to ASTM, OSHA, EPA, and RCRA standards, with material specifications including compliance with ASTM D3681, F477, C796, and D638. Inspections and acceptance occur on-site during and after critical phases, with the government retaining the right to reject non-conforming work. Acceptance criteria mandate leak-free linings, no delamination or blistering, no internal diameter reduction exceeding 2%, and proper service reinstatements. Materials must be properly marked with manufacturer, date, batch, and specification data, stored in original sealed containers protected from temperature extremes, and handled according to strict preservation protocols. Contractors must submit financial statements for 2024 and 2025, provide letters from insurance providers confirming coverage, and secure surety bond commitments as part of their proposal. Key personnel—including a Project Manager, Superintendent, Quality Manager, and Safety Manager—must be identified with detailed qualifications and approval processes, and subcontractor changes require formal prior approval. Insurance requirements include a $100 million minimum net worth for self-insured contractors, a 10% self-insured retention cap, and coverage extending 24 months post-completion. All proposals must be submitted