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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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A summary of pesticide residue data from the Alberta treated water survey, 1995-2003

Description

Pesticide residues in aquatic environments in Alberta were relatively poorly documented until recently. Although pesticides had been analyzed for environmental samples since the early 1970s, and... More ≫

Description

Pesticide residues in aquatic environments in Alberta were relatively poorly documented until recently. Although pesticides had been analyzed for environmental samples since the early 1970s, and in treated water supplies since 1978, detection limits were high and few pesticides were detected. Recently, new analytical instrumentation has enabled a 1-2 order of magnitude reduction in detection levels, resulting in information on pesticides in treated water supplies that was not available before.

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