Estimated Project Cost: $125,000 to $225,000 Contract Working Days: 35 This project consists of the installation of a forced air biofilter, biofilter blower, electrical control panel installation, concrete pad, fence, 6-inch C-900 PVC underground air duct connection to a nearby 48-inch wastewater manhole, drain connection to the manhole, air inlet structure installation, reduced pressure backflow assembly, and water service connection to the biofilter assembly including two 2-inch gate valves and non-freeze post hydrant. The 48-inch manhole will also be rehabilitated. The rehabilitation work includes pressure washing the existing manhole, installing an approved non-shrink grout to manhole joints, invert repair if necessary, and installing an approved manhole lining system to the manhole totaling approximately 33 vertical feet of lining material. Wastewater bypass pumping and traffic control will be required.

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