Site work for a water / sewer project in Sainte-Clotilde-de-Chateauguay, Quebec. Completed plans call for site work for a water / sewer project.

Reference number: 20085308 Deadline for receipt of complaints 2025-07-22 Description of the Works The work covered by this quote concerns Ile aux Boeufs (East 318471.82 North 5074512.32), an island in the Vercheres archipelago located at the center of the Saint-Laurent, about 20 km downstream from the tip of the island of Montreal and 2 km upstream of the Contrecoeur port terminal expansion project. The scope of work includes the construction of submerged structures and the development of submerged aquatic meadows on the riverbed. More specifically, the proposed works include: A deflecting dike and submerged breakwaters. These rockfill structures will have a ridge at the elevation of 4.2 meters (CGVD28), making them submerged by about 1 meter of water under average river flow conditions. The placement of a granular substrate with a thickness of 0.20 meters on the coastline between Ile aux Boeufs and the structures. This substrate will be composed of sand, gravel and stones with rounded and washed edges, with a grain size ranging from 2 to 175 mm (D50 27 mm). The presence of rounded edges and interstitial voids will facilitate the anchoring and spreading of rhizomes and roots of vallisnery. The underwater planting of the American Valley Beetle (Vallisneria Americana) in linear pairs of furrows (about 9,920 linear meters of furrows in total, or 4,960 meters of pairs of furrows). These furrows will accommodate 4,960 fascines, each containing about 10 plants of vallisnery, for a total of 49,600 plants.