Publications

Deriving a water quality guideline for protection of aquatic communities exposed to triclosan in the canadian environment

Triclosan is an antibacterial and antifungal chemical used in a variety of consumer products, including soaps, detergents, moisturizers, and cosmetics. Aquatic ecosystems may be exposed to triclosan following the release of remaining residues in wastewater effluents and biosolids. In December 2017, Environment and Climate Change Canada (ECCC) released a federal environmental quality guideline (FEQG) report that contained a federal water quality guideline (FWQG) for triclosan. This guideline will be used as an adjunct to the risk assessment and risk management of priority chemicals identified under the Government of Canada’s Chemicals Management Plan (CMP). The FWQG value for triclosan (0.47 μg/L) was derived by ECCC using a hazardous concentration for 5% of species (HC5) from a species sensitivity distribution (SSD). We recalculated the FWQG after performing an independent analysis and evaluation of the available aquatic toxicity data for triclosan and compared our results with the ECCC FWQG value. Our independent analysis of the available aquatic toxicity data entailed conducting a literature search of all available and relevant studies, evaluating the quality and reliability of all studies considered using thorough and consistent study evaluation criteria, and thereby generating a data set of high‐quality toxicity values. The selected data set includes 22 species spanning 5 taxonomic groups. An SSD was developed using this data set following the ECCC approaches. The HC5 from the SSD derived based on our validated data set is 0.76 μg/L. This HC5 value is slightly greater (i.e., less sensitive) than the value presented in ECCC’s final FWQG. Integr Environ Assess Manag 2018;00:000–000. © 2018 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals, Inc. on behalf of Society of Environmental Toxicology & Chemistry (SETAC).

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Ecological Risk Assessment of the Uses of the Organophosphorus Insecticide Chlorpyrifos in the United States

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Refined avian risk assessment for chlorpyrifos in the United States. Reviews of Environmental Contamination and Toxicology

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Health Impact Assessment of transportation projects, plans and policies: A scoping review

Dr. Faiza Waheed article on ‘Health Impact Assessment of transportation projects, plans and policies: A scoping review’ has been published in the Environmental Impact Assessment Review.

Highlights

• Transportation HIA practice varies widely with some core similarities.
• NGO funding of transportation HIAs in the US provided a significant boost to practice.
• A positive association exists between transport planner involvement and impact of HIA.
• Very few HIAs conduct evaluation of the HIA process and its effectiveness.
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A weight-of-evidence approach for deriving a level of concern for atrazine that is protective of aquatic plant communities

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Geosmin in lake water may be the cause of unpalatable fish

Ms. Claire McAuley’s article can be viewed in the February 2018 edition on pages 66-69 of the Environmental Science & Engineering Magazine.

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Inventory and Analysis of Exposure Factors for Alberta 2018

Intrinsik’s expert scientists prepare Alberta Health Report on ‘Inventory and Analysis of Exposure Factors for Alberta’ that was released in January 2018.

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Derivation of an Aquatic Benchmark for Invertebrates Potentially Exposed to Imidacloprid Using the Results from Mesocosms

Derivation of an Aquatic Benchmark for Invertebrates Potentially Exposed to Imidacloprid Using the Results from Mesocosms

Using Higher Tier Data and Models in a Weight-of-Evidence Assessment to Determine a Water Quality Benchmark for Atrazine

Using Higher Tier Data and Models in a WoE Assessment to Determine a Water Quality Benchmark for Atrazine

Improving Risk Assessment Calculations for Traditional Foods Through Collaborative Research with First Nations Communities

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