Rehabilitation works for the combined sewer collector at Parc de Sceaux

Summary

The tender concerns rehabilitation of the combined sewer collector and associated connections at Parc de Sceaux between rue Paul Couderc and the Hanover Grenouillère Perspective. The works are divided into two lots: Lot 1 covers civil engineering rehabilitation of the accessible collector and associated structures, including demolition, structural lining, sprayed concrete, trenching, connection rehabilitation and waterproofing resin injection; Lot 2 covers bonding injections with a regeneration effect in the vault, invert and sidewalls. The expected duration is 33 months for Lot 1 and 23 months for Lot 2. Lot 2 is a composite contract with unit-price work and call-off orders, with no minimum amount and a maximum of EUR 600,000 excluding VAT. The submission deadline is 19 October 2026 at 16:00. Evaluation is based on price (50%), execution methods (40%) and environmental performance (10%). The tenderer must provide financial, staffing, experience, insurance and professional qualification evidence and may submit for, and be awarded, both lots.