Autoplex Siphon Cleaning And Lining

The project involves the assessment and rehabilitation of two existing 8-inch diameter ductile iron sewer siphon pipes, each approximately 153 feet in length, located under a flood control channel at a depth of about 24 feet in Costa Mesa, California. The scope of work requires full sewer bypass, heavy cleaning of both siphons using chain flail and high-velocity equipment to remove wastewater, solids, roots, mineral scales, and debris, followed by pre- and post-installation closed-circuit television inspections. The rehabilitation includes the installation of continuous, jointless Cured-in-Place Pipe (CIPP) liners engineered to function as a structural stand-alone system with a minimum 50-year service life, conforming to ASTM F1216, F1743, F2019, and D5813 standards. Any identified pipe holes or groundwater infiltration must be addressed prior to CIPP installation using light-cured point liners or chemical grouting. The work also encompasses service line reconnections, material testing, site restoration, and submission of unedited digital inspection videos and reports within 10 working days of completion. All materials must be marked with detailed product information and chain-of-custody identifiers for traceability, and testing samples must meet specified thickness tolerances and hydraulic performance criteria. The contract is a fixed-price public works project with an estimated value of $135,648, governed by the Costa Mesa Sanitary District under solicitation number 20260715034, with a bid submission deadline of August 12, 2026. Performance is to be completed within 30 working days after issuance of the Notice to Proceed, at the site located between 375 Bristol Street in Newport Beach and the east side of the Newport Beach Golf Course. The contractor must provide performance and payment bonds equal to 100% of the contract sum, issued by a California-licensed surety with an A.M. Best rating of A-:VI or better, and maintain public liability insurance of at least $5 million with the District named as an additional insured. Compliance with California prevailing wage laws is mandatory, requiring weekly submission of Form DH-H-347. All subcontracting must adhere to state laws, include flow-down clauses, and be in writing, with violations subject to penalties up to 10% of the subcontract value. The contractor assumes full responsibility for obtaining permits, managing hazardous material notifications