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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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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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Evaluation of four reports on contamination of the Athabasca River system by oil sands operations

Description

This publication includes the technical evaluation, recommendations and general conclusions drawn from four reports of contamination of the Athabasca River system by oil sands operations. The four... More ≫

Description

This publication includes the technical evaluation, recommendations and general conclusions drawn from four reports of contamination of the Athabasca River system by oil sands operations. The four reports included two papers written by a team of scientists led by Drs. David Schindler and Erin Kelly of the University of Alberta, one Alberta Environment report written by T. Hebben, and a report from the Regional Aquatics Monitoring Program.

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Selenium concentrations in the tissues of fish from the Upper McLeod and Upper Smoky River systems

Description

The present study compared selenium in fish tissues from flowing water systems near three west-central Alberta mountain cola mines in the upper McLeod and Smoky River systems to the toxicity... More ≫

Description

The present study compared selenium in fish tissues from flowing water systems near three west-central Alberta mountain cola mines in the upper McLeod and Smoky River systems to the toxicity effects thresholds developed by Lemly (1996). Overall, data for fish tissues collected in 2000 and 2001 by Alberta Sustainable Resource Development showed that selenium concentrations in rainbow and brook trout were usually greater than toxicity effects thresholds in the exposed streams compared to reference streams, particularly in the tissues of fish collected from waters draining the Luscar and Gregg River mines. General patterns for selenium concentrations int he remaining fish species sampled (bull trout, mountain whitefish, Arctic grayling, and longnose sucker) compared to effects thresholds were not always as apparent. This was to some extent due to the potential influences of spawning migrations of mountain whitefish and bull trout among the exposed and reference sampling locations, and...

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Wabamun Lake oil spill August 2005 : data report for water and sediment quality in the pelagic area of the lake (August 4-5 to September 15, 2005)

Description

This report provides a summary of the chemical data (extractable and volatile priority pollutants, PAH, and trace metals) collected from water and sediments in the pelagic zone of the lake on the... More ≫

Description

This report provides a summary of the chemical data (extractable and volatile priority pollutants, PAH, and trace metals) collected from water and sediments in the pelagic zone of the lake on the days and weeks following the spill.

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Results of aquatic studies in the McLeod and Upper Smoky River systems

Description

Selenium is a naturally occurring element, commonly found in rocks and soil. It is a nutrient usually required in small amounts by humans and other organisms, but it can be toxic at only slightly... More ≫

Description

Selenium is a naturally occurring element, commonly found in rocks and soil. It is a nutrient usually required in small amounts by humans and other organisms, but it can be toxic at only slightly higher levels. Concerns related to the fate and effects of selenium in aquatic ecosystems near mountain coal mines in west-central Alberta arose in the late-1990s. Mobilisation of selenium from geologic sources into surface water due to mining has occurred at three coal mines in the upper McLeod River and upper Smoky River systems. In 2000, Alberta Environment initiated various aquatic studies to: continue and establish new ambient monitoring of selenium and other metals at reference and exposed sites in streams near the three mountain mines; determine selenium levels in surface water and food web of streams, and to evaluate the data in a conceptual food web; and conduct a pilot study to determine selenium levels at old closed coal mines in the foothills of south-western Alberta. This...

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Spatial variability of water quality in Wabamun Lake (July 2002) data report

Description

The objective of the sampling program initiated by AENV in July 2002 was to scope out the degree of spatial variability in Wabamun Lake water quality. Eight other lakes were also sampled to allow... More ≫

Description

The objective of the sampling program initiated by AENV in July 2002 was to scope out the degree of spatial variability in Wabamun Lake water quality. Eight other lakes were also sampled to allow comparisons of the intra- and inter-lake variability in water quality. This document provides a compilation of the data and highlights the major findings

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Disinfection by-products in the Wabamun Lake water treatment plant-treated water and Wabamun Lake, July 2002 To March 2003

Description

Several studies were initiated in 2002 to address concerns related to a fish kill and metal levels in sediments from Wabamun Lake. This study was conducted by Alberta Environment to determine the... More ≫

Description

Several studies were initiated in 2002 to address concerns related to a fish kill and metal levels in sediments from Wabamun Lake. This study was conducted by Alberta Environment to determine the occurrence and temporal and spatial variability of disinfection by-products (DBPs) in treated water from the Wabamun Lake Water Treatment Plant (WL-WTP), at sites in the vicinity of the treated water discharge, and at other sites further away within the lake. This report provides the findings of the sampling program.

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Industrial release limits policy

Description

Outlines the approach followed to develop industrial release limits for approvals under the Environmental Protection and Enhancement Act. The policy supports the Alberta Government's commitment to... More ≫

Description

Outlines the approach followed to develop industrial release limits for approvals under the Environmental Protection and Enhancement Act. The policy supports the Alberta Government's commitment to sustainable resource and environmental management by outlining how pollution prevention/control requirements are established for industrial releases to the environment.

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