718-2022 - Riverbend Lift Station Upgrades

D3.          SCOPE OF WORK

D3.1        The Work to be done under the Contract shall consist of complete upgrade of all 
building and process equipment of the Riverbend Lift Station.

D3.2        The major components of the Work are as follows:
(a)   mobilization and demobilization;
(b)   by-pass manhole and valve assembly:
(i)     installation of new by-pass manhole, piping, fittings and City supplied valve assembly;
(c)    flow control and temporary wastewater diversion and disposal:
(i)     flow control and wastewater diversion during initial station construction; and
(ii)     additional flow control and wastewater diversion will be required during switch over from 
resilient seat gate valves to non-resilient seat gate valves;
(d)   force main:
(i)     excavation, bedding and backfill;
(ii)     supply and installation of force main piping;
(iii)     fittings such as bends and plugs;
(iv)     connecting new force main to existing lift station and manhole;
(v)     supply and installation of internal drop pipe in existing manhole;
(vi)     hydrostatic leakage testing of force main piping;
(vii)     abandonment of existing force main; and
(viii)     surface restorations including concrete pavement slabs complete with asphalt overlay, 
boulevard and/or sidewalk, where required;
(e)   structural:
(i)     demolition of existing building superstructure;
(ii)     new superstructure;
(iii)     hatches modification;
(iv)     provision of motor room and pump room monorails for installing the City supplied motorized 
hoists;
(v)     new building openings for heating, ventilation and air conditioning (HVAC) systems;
(vi)     new main floor opening for electrical; and
(vii)     miscellaneous structural improvements and reinforcement to existing building;
(f)    architectural:
(i)     new hatch covers and guardrails;
(ii)     rehabilitation of substructure, drywall and ceiling including insulation;
(iii)     painting of substructure walls and ceiling; and
(iv)     surface restorations including landscaping, fencing and concrete driveway repairs;
(g)   process mechanical:
(i)     installation of City supplied pumps, motors and valves;
(ii)     installation of temporary City supplied resilient seated gate valves;
(iii)     removal of resilient seated gate valves and replacement with City supplied non- resilient 
seated gate valves;
(iv)     replacement of all station process piping, fittings, valves along with new pumps and 
motors;
(v)     replacement of all piping supports and bases;
(vi)     addition of flow meter; and
(vii)     modifications and addition to the wet well level measurement system;
(h)   building mechanical:
(i)     replacement of HVAC system; and
(ii)     plumbing (water) upgrades;
(i)     electrical and instrumentation:
(i)     demolition of existing electrical system;
(ii)     replacement of entire electrical distribution system including CSTE, MCC, panel- board, 
transformer, wall receptacles, lighting, conduit, cabling and instrumentation; and
(iii)     new motor controls centre (MCC), new lift pump variable frequency drives and associated 
electrical Work;
(j)     automation:
(i)     replacement of existing remote terminal unit (RTU) panels with a new PLC control panel, 
including programming of the PLC and HMI;
(ii)     new HVAC control panel; and
(iii)     integration and commissioning of lift station;
(k)    for details, refer to the Drawings and Technical Specifications.

D3.3        The following shall apply to the Services:
(a)   City of Winnipeg Green Building Policy: New City-Owned Buildings and major additions; 
http://clkapps.winnipeg.ca/DMIS/DocExt/ViewDoc.asp?DocumentTypeId=2&DocId=5989
(b)   Universal Design Policy
http://clkapps.winnipeg.ca/DMIS/DocExt/ViewDoc.asp?DocumentTypeId=2&DocId=3604