Tribble Mill Dam No. 2 (Chandler Lake) Rehabilitation

This opportunity seeks a qualified contractor to rehabilitate the low‑hazard Category II Tribble Mill Dam No. 2 (Chandler Lake) in Gwinnett County, GA. The work includes temporary erosion‑control, lake drainage, construction of a cofferdam, demolition of existing concrete structures, new concrete riser and impact basin, rip‑rap outlet channel, spillway pipe installation and cured‑in‑place pipe lining, tree removal, site grading, and final site restoration. The contract will be awarded through competitive sealed bidding and must be completed within one year of contract start. • Major civil‑engineering activities: concrete demolition, new construction, and pipe lining. • Required environmental controls: erosion control, temporary water diversion, and site restoration. • Project schedule: 365‑day construction window with a 30‑day final‑payment period after substantial completion.