Crosstown

Sewer Work – Eglinton Avenue East between Banff Road and Bayview Avenue

January 8, 2016

What: To prepare for west headwall construction for the future Bayview Station, crews are rehabilitating and upgrading an existing underground sewer on Eglinton Avenue East between east of Banff Road and west of Bayview Avenue. 

When: Work began in December, 2015, and will continue for several weeks. Work may be rescheduled or adjusted due to weather conditions or unforeseen circumstances.

Please be advised: 

Neighbouring residents may experience a distinctive odour from water being discharged into the sanitary/storm sewer. Typically, properties have a trap on the building services which prevents the smell from coming back into the dwelling. In some older properties, this trap may not exist or it may be too try to neutralize the odour. To reduce these odours, pour water into basement floor drain(s) or insert a towel to plug the drain. On a regular basis, this practice helps prevent unwanted sewer gases from entering the home.

Please Contact Us

If you would like more detail about this work or any other aspect of the Eglinton Crosstown project, please do not hesitate to contact us.  We thank you for your continued patience as we work to build this important project.

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Background:

The Cured In Place Pipe (CIPP) reconstruction process involves the use of a liquid thermosetting plastic resin that is hardened within the existing deteriorated pipe to create a new pipe-within-a-pipe. The resin used for CIPP contains a substance called styrene, which takes part in polymerization or hardening when heated. Styrene has a distinctive odour, which can be detected by humans at concentrations far below any level associated with the established limits.

The CIPP material is constructed from the same type of plastic that is used in the transportation, construction, marine and clothing industries.

Humans detect styrene odours at a concentration of approximately 0.017-1.9 parts per million (ppm) which is well below the permissible limit of 20 ppm for the work place (8 hours per day, 5 days per week) set by the Ontario Occupational Health & Safety Act.

To summarize, the resins used in CIPP contain a substance called styrene with a distinctive odour that can be detected at very low levels. The concentration of styrene that may be experienced by the general public during a CIPP project may produce a distinctive odour, but is well below any level, which could injure anyone.

FAQs:

What is styrene?

Styrene is a clear, colorless liquid that is a component of materials used to make thousands of everyday products for home, school, work, and play. Styrene is used in everything from food containers and packaging materials to cars, boats, computers, and video games. Derived from petroleum and natural gas by-products, styrene helps create thousands of remarkably strong, flexible, and light-weight products, representing a vital part of our economy and quality of life.  The styrene used in these products is manufactured synthetically in petrochemical plants.  However, styrene also occurs in the environment and is found in many common.foods, such as coffee, strawberries, and cinnamon.

Do I come in contact with styrene?

Most people are exposed to styrene every day in minuscule amounts that may be present in the air, or that occur in food. These generally are trace amounts, which were difficult to detect until recent technological advances. We also may recognize styrene by its distinctive odor when using certain products such as latexes, paints, and polyester resin solutions.

Some people confuse styrene, which is a liquid, with polystyrene, which is a solid plastic made from polymerized styrene., Styrene and polystyrene are fundamentally different.

Polystyrene is inert, and has no smell of styrene. Polystyrene often is used in applications where hygiene is important, such as health care and food service products. For more information on polystyrene products, visit the Pol~s!y[ene Packaging Council homepage.

Is styrene harmful to my health?

Styrene is not harmful in the very small amounts we sometimes may encounter in air or food. Someone working in an enclosed area with resin solutions containing styrene (patching the surface of a fiberglass boat, for example) may find the odor of styrene causes slight nausea. This goes away with exposure to fresh air, and there is no lasting effect.

The U.S. Environmental Protection Agency began a formal review of styrene in 1998 for their Risk Information System Database (See What's New). In an important decision made in 1994 after an extensive assessment of its possible health and environmental effects, the Canadian government agencies Health Canada and Environment Canada concluded that styrene is "non-toxic." After a thorough review of health effects data and evaluation of potential human and environmental exposures, they found styrene "does not constitute a danger to human life and health" and "does not constitute a danger to the environment on which human life depends."

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