In 2020, the city of Tampa acquired the McKay Bay Waste-to-Energy Facility in an effort to improve the efficiency of the facility and to reduce annual operating expenses by approximately $5 million. One of only two US cities to own and operate its own waste-to-energy (WTE) plant, the city of Tampa plans to invest the savings into the facility to increase the longevity of the plant and ensure that maximum energy is produced from the city’s waste stream. The McKay Bay WTE facility converts more than 2 million pounds of household and commercial refuse into electrical energy daily. In 2019, the facility processed more than 310,000 tons of waste and generated enough electricity to power approximately 15,000 homes. The process saves more than 302,000 barrels of oil and reduces the need to landfill solid waste. As part of an enhancement plan for the facility, the city of Tampa proposed several new construction projects at the site. Among them: A 30,000 sq-ft metal transfer building with an elevated tipping floor area designed to slope into a cast-in-place (CIP) underground commercial loading tunnel; an adjacent two-story, 5,600 sq-ft employee building; an employee parking area.
Due to the loose and variable nature of the soils at the site, Menard USA was contracted to provide ground improvement. The selected technique — Controlled Modulus Column (CMC)® rigid inclusions — would be installed to support the transfer station, employee building, parking area, loading tunnel, a citizens drop-off area, a CIP Z-wall, retaining walls, Mechanically Stabilized Earth (MSE) walls and fill areas.