Abstract Title

Session S-07C: Water Pollution Identification and Correction (PIC) Programs: Methods, Resources, and Success Stories

Keywords

Water Quality

Location

Room 606

Start Date

1-5-2014 3:30 PM

End Date

1-5-2014 5:00 PM

Description

In 2011, Metro Vancouver began to assess the effluents from its major wastewater treatment facilities in order to determine whether environmental discharge objectives (EDOs) would be needed for an upgraded Lions Gate, or expanded Annacis Island, wastewater treatment facility. This work was undertaken as part of Metro Vancouver’s policy commitment to providing services and solutions for a livable region. The process used to develop EDOs was that outlined in the Canada-wide Strategy for the Management of Municipal Wastewater Effluent endorsed by the Canadian Council of Ministers of Environment (CCME) in February 2009. In reviewing the draft EDOs, BC Ministry of Environment staff encouraged Metro Vancouver to identify contaminants of emerging concern that could be an issue at the WWTP in the future. This left Metro Vancouver and its consultants in a quandary. EDOs are to be developed where measured concentrations exceed water quality guidelines (criteria) outside of the initial dilution zone. Water quality guidelines do not exist for most of the hundreds of substances that have been measured in the effluent or the receiving environment. Specifically, which of these hundreds of substances are of emerging concern and how can one determine whether any impact from them is environmentally significant? In our presentation, we will outline briefly the process followed, new guidelines that are being developed, and provide examples of the difficulties in assessing data for relatively common substances where guidelines do not exist.

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May 1st, 3:30 PM May 1st, 5:00 PM

Contaminants of Emerging Concern:How are These Identified?

Room 606

In 2011, Metro Vancouver began to assess the effluents from its major wastewater treatment facilities in order to determine whether environmental discharge objectives (EDOs) would be needed for an upgraded Lions Gate, or expanded Annacis Island, wastewater treatment facility. This work was undertaken as part of Metro Vancouver’s policy commitment to providing services and solutions for a livable region. The process used to develop EDOs was that outlined in the Canada-wide Strategy for the Management of Municipal Wastewater Effluent endorsed by the Canadian Council of Ministers of Environment (CCME) in February 2009. In reviewing the draft EDOs, BC Ministry of Environment staff encouraged Metro Vancouver to identify contaminants of emerging concern that could be an issue at the WWTP in the future. This left Metro Vancouver and its consultants in a quandary. EDOs are to be developed where measured concentrations exceed water quality guidelines (criteria) outside of the initial dilution zone. Water quality guidelines do not exist for most of the hundreds of substances that have been measured in the effluent or the receiving environment. Specifically, which of these hundreds of substances are of emerging concern and how can one determine whether any impact from them is environmentally significant? In our presentation, we will outline briefly the process followed, new guidelines that are being developed, and provide examples of the difficulties in assessing data for relatively common substances where guidelines do not exist.