486700 / DWS-920 - Inspection, Rehabilitation & Replacement of Sewers (AS NEEDED)

OVERVIEW
The work, as specified in this Request for Bids (RFB) #486700 / Project #DWS-920, may consist of the following, throughout the City of Detroit, on an as-needed basis:

- Sewer inspection by means of closed-circuit television (CCT) and/or multi sensor platforms,
- Cleaning and rehabilitation of circular and non-circular storm and sanitary sewers up to
72- inch in size by method of cured-in-place pipe (CIPP), spray lining cementitious grouting, and chemical grouting, - Conducting Laser and Sonar sewer inspection,
- Performing review of video inspection and recommending repair methods including design calculations and backup for the repair method chosen,
- Repairing sewer cave-ins and point repairs of circular and non-circular storm and sanitary sewers by open-cut method of excavating the damaged portion of the pipeline and replacing it with new piping,
- Providing earth retention shafts and insertion and access pits for manned or unmanned access to the sewer or point repairs,
- Providing manhole inspection, cleaning, repairs, and replacements including structure repair, grouting, lining, and restoration work,
- Performing dye testing of sewer laterals, sewer structures, and cave-ins to determine connectivity and infiltration,
- Performing site cleanup and restoration including surface restoration of pavement, curbs, sidewalks, driveways, and lawn restoration, and
- Any additional work as defined in the bid schedule and measurement and payment descriptions.