61-2020 - 2020 Branch I Aqueduct Underdrain Inspections

The Work to be done under the Contract shall consist of cleaning and inspection of the Branch I Aqueduct Underdrain and corresponding manholes and structures located at various districts throughout and in the outskirts of the City of Winnipeg.

D2.2 The major components of the Work (Underdrain Inspection Work Program) are as follows:
(a)Cleaning of all underdrains, regardless of diameter, with the following approximatequantities:
(i)3.3 km of 150mm diameter pipe;
(ii)11.4 km of 200mm diameter pipe;
(iii)3.5 km of 250mm diameter pipe; and
(iv)0.4 km of 300mm diameter pipe.
(b)Cleaning of all associated manhole and structures.
(c)CCTV Inspection of all underdrains as noted in Appendix A and on Maps 01 to 22.
(d)Inspection of all manholes and control structures as noted in Appendix A and onMaps 01 to 22.
(e)Inspection of underdrain laterals around the perimeter of thrust blocks and chambers listedin E6.16.
(f)Investigations in various identified locations to confirm underdrain existence andconnectivity in E6.20.

D.2.3  The pre-bid estimate available for this Contract is $500,000.