PFOS pollutes creek
Joe Minor

Ancaster, Canada

#1 Apr 18, 2012
Somewhere in “eastern Ontario” there is a big toxic mess of PFOS contaminating a creek. I wish I could tell you where, but the location is a federal government secret.

I wish I could tell you how big the mess is, but that is also a government secret.

Apparently the levels of contamination are so bad that they could kill mink.

The location of the PFOS toxic mess is downstream of an abandoned fire fighting training facility on federal land (maybe an airport, maybe a military base).

If you know where this is, please contact me:

[email protected]

Page 21

Ecological Risk Assessment of Perfluorooctane Sulfonate in Surface Water and Sediment in the Vicinity of a Former Fire Fighter Training Area in Eastern Ontario

David Tarnocai, SNC-Lavalin Environment

Perfluorinated compounds have relatively recently been the subject of considerable interest due to the bioaccumulative properties, toxicity and persistence of a number of perfluorinated compounds. Sediment and surface water sampling of a small creek in the vicinity of a former firefighter training area indicated impacts to both media by perfluorinated compounds. A defined concentration gradient along the creek suggests a principal source for perfluorinated compounds in the aquatic environment is principally related to former operations at the fire fighter training area. An ecological risk assessment was undertaken to evaluate the risk to aquatic receptors through hypothetical perfluorooctane sulfonate (PFOS) exposure, principally through biomagnification. Although the potential for adverse effects to aquatic mammalian piscivorous wildlife were identified at a minority of sampling locations, central tendency exposure, considered more applicable to mobile receptors, indicates that no significant adverse population level effects are likely.

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