Project: Gasperaux Lake


Gasperaux Lake/St. Joseph’s Water supply and Distribution
Municipality of the County of Antigonish

C.J. MacLellan & Associates completed design, tender, award, contract administration and commissioning of the new water treatment facility and small diameter distribution line for the residents of Gasperaux Lake and St. Joseph’s area located approximately 15 kilometres south of Antigonish. The project required the commissioning of a 60 lpm well, the construction of a concrete 83 m3 clearwell/reservoir, a duplex reverse osmosis and softener treatment process and the installation of over 3300 metres of 100mm diameter watermain.  The project considered two tenders, with two contractors working simultaneously in an effort to have the water supply delivered near the end of 2006.

 


The treatment building was constructed over a concrete tank that provided serpentine baffling for chlorinated water and contact time.

The building was of wood frame construction and included adequate space for treatment equipment and the potential to expand for additional raw water supply.  The contact chamber and treatment process was situated at a topographic high point such that the service area could utilize pressure due to gravity for some homes.

The distribution main included over 3300 metres of 100mm diameter watermain as the supply was provided for domestic use only and not fire protection. In addition the well yield was limited to the 60 lpm capacity. The watermain was installed in the shoulder and ditch slopes utilizing conventional trench excavation and backfilling. There were a number of bored crossing under a newly paved road to accommodate service and pipe installations.  The project commenced in August of 2006 and as was completed in October, with commissioning following the treatment plant start up.  The treatment plant and distribution piping were in excess of $500,000 for design, construction and administration.

C.J. MacLellan & Associates Inc. Member of the SNC Lavalin Group of Companies
Ph: (902) 863-1220 | Fax: (902) 863-3225 | Email: cjmac@snclavalin.com
Suite 2, 65 Beech Hill Rd, Antigonish, Nova Scotia Canada B2G 2P9

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