194,_198,_&_200_River_Street_-_Drawing_Set_-_Issued_for_Bid_(2026-02-18).pdf

This is a drawing set document issued for bid by the City of Connecticut for the Environmental Remediation of 198 River Street and Associated Site Improvements project. The project encompasses environmental remediation and limited site improvements at three contiguous properties: 194, 198, and 200 River Street. The work is structured in four distinct phases, with the City's contractor responsible for Phases 1, 2, and 4, while a private developer will execute Phase 3. Phase 1 (remediation) involves demolition and disposal of polychlorinated biphenyl (PCB) contaminated concrete slabs at 194 and 198 River Street, excavation and disposal of contaminated soils exceeding 50 ppm PCB levels from three remedial excavation areas at 198 River Street, and dewatering, treatment, and discharge of contaminated groundwater. Phase 2 includes installation of temporary support of excavation systems along River Street, foundation excavation for the proposed building, retaining wall construction, and site backfilling and compaction. Phase 4 involves finalization of temporary support systems, site backfilling and compaction to final subgrades, installation of on-site stormwater drainage systems at 194 and 198 River Street, and installation of underground electrical service and light infrastructure. The anticipated construction duration is 84 calendar days for Phases 1 and 2, 30 calendar days for Phase 3 by the private developer, and 60 calendar days for Phase 4.

The drawing set issued for bid on February 18, 2026, provides the technical specifications and site plans necessary for contractors to prepare detailed cost estimates and construction methodologies. The document serves as the primary reference for bidders to understand the scope of work, site conditions, contamination levels, and required construction details for the environmental remediation and associated improvements. This drawing set is essential for competitive bidding on the contract and ensures all bidders have access to the same design and specification information for accurate proposal submission.