Charles County Landfill Cell 4B Construction

Charles County, Maryland is seeking competitive bids for the construction of Phase 2 of Subcell 4 (specifically Subcell 4B) at Charles County Landfill No. 2, located approximately 8 miles northeast of La Plata on Billingsley Road. The project encompasses 5.7 acres of the 114.3-acre landfill site and involves constructing Subcell 4B with leachate transmission piping connections to the existing leachate influent wet well, along with related incidental work. Key deliverables include approximately 90,000 cubic yards of excavation and stockpiling, installation of 3,200 linear feet of underdrain systems, placement of 234,200 square feet of geosynthetic liner system, and a lump-sum leachate collection system, requiring comprehensive earthwork of approximately 107,203 cubic yards of cut and 1,681 cubic yards of fill. The project mandates sophisticated environmental protections featuring a 60-mil HDPE liner, geocomposite drainage layers, erosion control measures including sediment control basins, and compliance with Maryland Department of the Environment (MDE) regulations and Maryland soil erosion standards. Bidders must demonstrate at least 10 years of experience in relevant landfill construction activities and must maintain comprehensive insurance coverage including commercial automobile, worker's compensation, commercial general liability, builder's risk, and pollution liability insurance with specified minimum limits. The contract term is 160 consecutive calendar days from the Notice to Proceed, with substantial completion occurring upon MDE approval and authorization of refuse placement. The bid invitation was released on March 18, 2024, with a response deadline of April 24, 2024, at 2:00 pm; a non-mandatory pre-bid meeting and site visit were scheduled for April 3, 2024, at 10:00 am. Evaluation criteria include demonstrated experience, financial capacity, insurance compliance, and bid competitiveness.

This county-financed construction project exceeding $500,000 is subject to prevailing wage requirements under Maryland regulations, with hourly wage rates ranging from approximately $28 to $50 per hour depending on labor classification. Bidders are required to submit a 5% bid bond and must comply with all local, state, and federal regulations, including standards set by the Charles County Government Department of Planning and Growth Management and MDE requirements. The contract includes performance and labor/material bonds to ensure contractor accountability and completion. The project incorporates existing infrastructure including monitoring wells and gas wells at the landfill site, and the design includes provisions for future subcell development with capped stub-outs and connection points for subsequent phases. Liquidated damages are assessed at up to $1,000 per day for delays beyond the contract completion date, with monthly progress payments subject to a 5% county retainage until final completion and acceptance. Upon project closeout, the contractor must provide affidavits of payment, release of liens, surety consent to final payment, and a one-year maintenance bond guaranteeing quality of materials and workmanship, with any defects to be remedied at the contractor's expense during the warranty period.