Preventative Maintenance for Wastewater Collection and Treatment Systems

The United States Department of State (DOS) requires services at the unclassified clearance level, to provide to provide maintenance services for the sanitary sewer collection system and the wastewater treatment system at the Chancery Compound, U.S. Embassy Malabo, Equatorial Guinea, in accordance with this contract. The wastewater treatment and collection systems to be maintained are as follows:

• Sanitary Sewer Collection System • Wastewater Treatment Plant The Overseas Buildings Operations (OBO) has a requirement to obtain wastewater treatment plant maintenance services to execute this work, including logistics, customs, shipping, transportation, labor, wastewater treatment chemicals, tools, wastewater treatment testing kits/equipment, administrative and all associated management support functions.

The wastewater treatment service contract includes but is not limited to combinations of physical methods, chemical methods, equipment servicing and testing to control wastewater-related issues such as flow control, blower maintenance & operation, air diffuser operation and adjustment, activated sludge aeration (Dissolved Oxygen), clarifier cleaning and operation, weir cleaning and adjustment, air-lift pumps operation and adjustment, filtration cleaning and operation (if applicable), disinfection control, effluent testing and adjustment. The contract is for one (1) base year with four optional years renewal, with the start date on October 1, 2025.