NPDES White Oak Pond Retrofit

Charles County, Maryland is soliciting sealed bids for the NPDES White Oak Pond Retrofit project, a comprehensive stormwater management initiative designed to treat approximately 20.48 acres of impervious surfaces and reduce Total Maximum Daily Load (TMDL) in compliance with National Pollution Discharge Elimination System (NPDES) permit requirements. The procurement seeks a qualified contractor to provide all necessary equipment, labor, materials, and supervision for retrofitting an existing stormwater management pond. Key project deliverables include excavating approximately 3,000 cubic yards of material, constructing a new wet pond with a gabion basket forebay, installing rock inlet and outlet protection, implementing a prefabricated bridge, replacing Type J and K inlets, and installing pipe anchors. Bidders must demonstrate at least three years of experience in stormwater management facility retrofitting, pond excavation, landscaping, and erosion control. The bid was released on September 4, 2024, with responses due by October 8, 2024, at 3:00 pm through the county's eProcurement Portal. A non-mandatory pre-bid meeting is scheduled for September 17, 2024, at 10:00 am, followed by a site visit at 11:00 am at the east side of Oak Drive in Waldorf, Maryland. The contract term is set at 270 consecutive calendar days from the Notice to Proceed.

The county has established an aspirational 25% Minority Women Business Enterprise (MWBE) participation goal and requires prevailing wage rates for county-financed construction contracts exceeding $500,000. Bidders must provide a 5% bid bond and comply with comprehensive insurance coverage requirements. The project is funded to fulfill Maryland Department of the Environment and NPDES MS4 permit requirements, with the contractor responsible for obtaining necessary permits and maintaining safety standards. While no specific incumbent vendors are mentioned, the project involves integrating new infrastructure with existing stormwater management systems. The contract includes base bid items for pond retrofit, landscaping, pipe anchoring, and a two-year extended landscaping maintenance bond, with additional contingency items such as excavation, topsoil, select fill, riprap, stone, concrete, geotextile fabric, and a hiker-biker path. Although a precise budget is not explicitly stated, the project's complexity, scope, and multiple components suggest a significant investment in environmental infrastructure improvement.