D2. SCOPE OF WORK
D2.1 The Work to be done under the Contract shall consist of the repair and modification of
the existing aeration piping for NEWPCC SBR-1 and SBR-2.
D2.2 The Contractor shall remove the existing wall mounted supports, fabricate and install
new wall mounted supports, re-slope the pipe and incorporate new expansion joints for each piping
loop. The Contractor shall further repair and reinstall the damaged aeration piping loop C located
in SBR-2. Damaged connections between the existing aeration piping and blower header shall be
repaired and reinforced or replace, adding new piping for crossover of flow between SBR-1 and SBR-2
headers.
Work shall first be completed on SBR-2 which must be fully operational before work can proceed to
SBR-1 which must then be decommissioned and cleaned by the City of Winnipeg prior to entry.
D2.3 The major components of the Work are as follows:
(a) All work related to the refurbishment of aeration piping for Tank SBR-2
(i) Fabrication and installation of new wall mounted supports consisting of a series of fixed
and sliding supports to accommodate thermal movement as shown on the drawings.
(ii) Lifting, repairing and remounting of the damaged piping loop ‘C’ in SBR-2 as shown on the
drawings.
(iii) Re-sloping of aeration piping to facilitate drainage between cycles.
(iv) Supply and installation of expansion joints in the vertical legs of each piping loop.
(v) Fabrication and installation of reinforcement where aeration piping connects to the blower
header and replacement of sections of aeration piping as described on the drawings.
(vi) Modification of existing blower header, fabrication and installation of new crossover
piping and butterfly isolation valve as shown on the drawings.
(vii) Removal of existing jacket and insulation on the blower header and drop leg piping
sufficient to carry out the work. Insulate and install new jacket as required to restore the
existing areas of insulation and to protect the new crossover piping components.
(viii) Provision of all scaffolding, lifting equipment or other as required to carry out the
work.
(b) All work related to the refurbishment of aeration piping for Tank SBR-1
(i) Fabrication and installation of new wall mounted supports consisting of a series of fixed
and sliding supports to accommodate thermal movement as shown on the drawings.
(ii) Re-sloping of aeration piping to facilitate drainage between cycles.
(iii) Supply and installation of expansion joints in the vertical legs of each piping loop.
(iv) Fabrication and installation of reinforcement where aeration piping connects to the blower
header and replacement of sections of aeration piping as described on the drawings.
(v) Modification of existing blower header, fabrication and installation of crossover
piping and connection to butterfly isolation valve as shown on the drawings.
(vi) Removal of existing jacket and insulation on the blower header and drop leg piping
sufficient to carry out the work. Insulate and install new jacket as required to restore the
existing areas of insulation and to protect the new crossover piping components.
(vii) Provision of all scaffolding, lifting equipment or other as required to carry out the
work.
D2.4 The Contractor and their Subcontractors shall:
(a) Acknowledge the receipt of the Wastewater Services Division (WWSD) Contractor’s Environmental
Preservation and Compliance Package by an email to the Project Manager or Contract Administrator.
(b) Comply with the Environmental Management Systems (EMS) Contractor’s package of the Wastewater
Services Division attached as Appendix E.
(c) Deliver EMS awareness training to employees and anyone who will be working on projects for
the Wastewater Services Division (WWSD) through formal education, online training interactive
training or work experience.
(d) Be aware of their obligation as stated in the Wastewater Services Division’s Environmental
Policy that provides overall direction for the WWSD’s environmental performance and provides a
framework for setting environmental objectives and targets. This policy can be found online
through the City of Winnipeg Wastewater Services website:
h ttps://www.winnipeg.ca/waterandwaste/sewage/legislation.stm
(e) Identify and understand the environmental impacts of your work. Environmental impacts may
include, but are not limited to:
(i) Depletion of natural resources
(ii) Conservation management and biodiversity
(iii) Soil contamination
(iv) Air emissions and pollution
(v) Water pollution
(vi) Noise pollution
(vii) Spills and releases
(viii) Disturbance to local community and fauna
(ix) Use of landfill spaces and waste management
