Basin 3 and 4 Flocculation and Sedimentation Improvements at Washington Aqueduct Division   3

Background
The proposed project will be a unrestricted competitive, firm-fixed-price, contract procured in accordance with Sealed Bidding, via an Invitation for Bid (IFB). The project involves Basin 3 and 4 Flocculation and Sedimentation Improvements at Washington Aqueduct Division.

Work Details
The project includes removal and replacement of existing leaking expansion joints, repair of miscellaneous concrete cracks and spalls in sedimentation basins 1-4, removal and replacement of the sedimentation basin 3 and 4 flocculators, modifications to the existing basin 3 and 4 Penthouse walkways, addition of new disconnect switch access platform and stairs in the basin 3 and 4 drywells, select removal, modification and replacement of portions of the residuals collectors installed in sedimentation basins 3 and 4, installation of permanent power supply and discharge piping to allow residuals to be discharged from sedimentation basins 3 and 4 to the existing Residuals Process Facility using Washington Aqueduct's existing temporary drain pump, miscellaneous electrical modifications to the power supply serving the north end of sedimentation basins 3 and 4, modifications to the transformer supplying power to the existing maintenance Building and sedimentation basin 4, replacement of the existing flush piping serving sedimentation basins 3 and 4, painting or replacement of miscellaneous ferrous metal handrails and supports.

Place of Performance
The geographic location for the construction projects is at Washington Aqueduct Dalecarlia Water Treatment Plant located at 5900 MacArthur Boulevard, Northwest, Washington DC 20016.