Louisa Street Stormwater Pond Retrofit and Sewer Replacement (Re-Bid)

This solicitation seeks a qualified contractor to retrofit an existing dry storm‑water detention basin on a 5.78‑acre parcel in Columbia, SC into a permanent wet retention pond with additional dry storage, and to relocate an adjacent sanitary sewer line. The work includes demolition of existing fencing, trees, and debris; excavation, grading, and construction of drainage structures, pipe, and a new pond control structure; installation of new chain‑link and privacy fencing; extensive erosion‑control, riprap, and slope stabilization; revegetation, seeding, and sod installation; and full coordination of traffic control during construction. The contractor must provide all labor, equipment, materials, and testing required to meet City, State, and Federal regulations, and will be awarded to the lowest responsible bidder. • Retrofit dry detention basin to wet retention pond with added storage • Relocate and install 12‑in. PVC sanitary sewer line with bypass pumping • Complete site clearing, demolition, excavation, grading, and drainage structures (pipes, manholes, catch basins, etc.) • Install riprap, erosion control blankets, and extensive landscaping (seed, sod, fertilization) • Provide new 6‑ft chain‑link and privacy fencing with gates • Manage traffic control, utility protection, and compliance with City of Columbia specifications • Deliver all required testing, documentation, and close‑out submittals.