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Annual environmental report North Bow, Calgary, Alberta

Description

Alberta Environment and Parks (AEP) is continuing with an environmental monitoring program in an area north of the former Canada Creosote Site and the Bow River in northwest Calgary, referred to... More ≫

Description

Alberta Environment and Parks (AEP) is continuing with an environmental monitoring program in an area north of the former Canada Creosote Site and the Bow River in northwest Calgary, referred to as the North Bow Site. Advisian was awarded a five-year (2017-2021) contract to complete the North Bow Site environmental monitoring work. This executive summary provides an overview of the findings of works completed in the first year of this program from March 2017 to March 2018.

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Final report on Canada Creosote Site - 2014 North Bow supplementary subsurface investigation and vapour intrusion assessment

Description

The objectives of the 2014 investigation and monitoring program were to: Evaluate the potential for vapour migration in residences in the area; Assess exposure and risk to residents in the... More ≫

Description

The objectives of the 2014 investigation and monitoring program were to: Evaluate the potential for vapour migration in residences in the area; Assess exposure and risk to residents in the vicinity through direct measurement of indoor air; Investigate the effects of seasonality on potential vapour intrusion, soil vapour concentrations and presents of NAPL; Evaluate if attenuation and if possible biodegradation is occurring between the source and residents; and where possible, delineate the extent of NAPL in the vicinity of monitoring well MW10-6 and further characterize soil and groundwater conditions in this area.

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Report on Canada Creosote site - North Bow screening level risk assessment update

Description

This follow-up investigation and screening level HHRA update was completed to address data gaps and recommendations outlined in the HHRA previously conducted by Golder in 2010 and 201.... More ≫

Description

This follow-up investigation and screening level HHRA update was completed to address data gaps and recommendations outlined in the HHRA previously conducted by Golder in 2010 and 201. Specifically, the objective of this investigation was to collect additional seasonal groundwater and soil vapour data at the site, and to update the previous HHRA based on this new data. The soil vapour sampling events carried out as part of this investigation targeted times of year when groundwater levels were expected to be at their approximate lowest and the vapour risk was assumed to be at its approximate highest.

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Assessment of recent changes in water quality of the Bow River downstream of the Canada Creosote site in Calgary

Description

These sampling results provide no evidence that the target compounds occur regularly in river water along the left bank (facing downstream), on the north side of the river. Contaminant movement... More ≫

Description

These sampling results provide no evidence that the target compounds occur regularly in river water along the left bank (facing downstream), on the north side of the river. Contaminant movement from the remaining pool of DNAPL in the river bed close to the right bank (facing downstream) remains the likely source of compounds detected on that side of the river downstream from the Canada Creosote site.

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Canada Creosote site - North Bow human health risk assessment

Description

Presents findings of a study on the human health risk assessment conducted on the former Canada Creosote site located north of the Bow River in Calgary, now a primarily residential area. The... More ≫

Description

Presents findings of a study on the human health risk assessment conducted on the former Canada Creosote site located north of the Bow River in Calgary, now a primarily residential area. The purpose of the study was to assess the potential risk to human health associated with possible exposure to subsurface contamination originating from the Canada Creosote site by residents.

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Final report on Phase I environmental site assessment report North Bow River area, Calgary, Alberta

Description

Presents findings of a Phase I environmental site assessment conducted on the former Canada Creosote site located north of the Bow River in Calgary, now a primarily residential area. The purpose... More ≫

Description

Presents findings of a Phase I environmental site assessment conducted on the former Canada Creosote site located north of the Bow River in Calgary, now a primarily residential area. The purpose of the study was to support a human health risk assessment for the site with respect to creosote soil and groundwater contamination.

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Recent changes in contaminant levels in the Bow River following the installation of a containment system at the Canada creosote site

Description

Alberta Envrionmental Protection has intensively monitored the Bow River ecosystem since 1989. This work was designed to determine the distribution of contaminants from the Canada Creosote site in... More ≫

Description

Alberta Envrionmental Protection has intensively monitored the Bow River ecosystem since 1989. This work was designed to determine the distribution of contaminants from the Canada Creosote site in the aquatic ecosystem, to protect domestic water supplies and to ensure the human consumption of fish was safe. This report evaluates changes in water quality over the two years since the containment system was intalled.

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Changes in contaminant levels in the Bow River following the installation of a containment system at the Canada Creosote site

Description

In November 1989, a liquid mixture of various contaminants including the wood preservatives creosote and pentachlorophenol (PCP) was found seeping into the Bow River adjacent to the abandoned... More ≫

Description

In November 1989, a liquid mixture of various contaminants including the wood preservatives creosote and pentachlorophenol (PCP) was found seeping into the Bow River adjacent to the abandoned Canada Creosote site in Calgary. A temporary berm was built in the river around the seepage area on November 6-9, 1989, and rebuilt on October 9-19, 1990. Contaminants were removed from the bermed area. A permanent barrier to contaminant flow was installed along the entire shoreline between April 29 and May 3, 1995, and a system designed to prevent the flow of contaminated groundwater to the river around the barrier was operational by February 8, 1996.

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