Thanks Frank for sharing, and Donna for posting here. I agree this is a subject we should keep track of. That's why I made it a separate topic.
I too found several articles on
Dechlorane Plus (DP). As recent as last week Nov. 7, 2011 an article "Dechlorane Plus in the Atmosphere and Precipitation near the Great Lakes" was published in
Environmental Science & Technology.
Only the
ABSTRACT is available, but it did make a notable comment: “The
highest concentrations of these compounds were generally observed at the rural site at Sturgeon Point, New York, which is
located near DP’s manufacturing facility in Niagara Falls, New York, and at the urban site at Cleveland, Ohio.â€
Canada seems to be in the forefront of monitoring this change in the environment. Last month 10-1-2011, a 181-page thesis by Ed Sverko was made public from McMaster University, Hamilton, ON entitled:
DETERMINATION OF DECHLORANE PLUS AND RELATED COMPOUNDS IN THE ENVIRONMENT.
Very interestingly, on page 5 this thesis supports that the
atmospheric and sediment concentrations of DP are the highest in our area.

“Figure 2: Map of the Great Lakes showing five current United States air sampling sites. The DP manufacturing plant is in the city of Niagara Falls, New York, which is on the Niagara River, a tributary connecting Lakes Erie and Ontario. The geometric means of DP’s atmospheric concentrations (summed vapor plus particle phases) are given at each site (in pg m-3). The lake-wide average sediment DP concentration is also given for each lake (in ng g-1 dw)."
I was quite surprised by the numbers for Lake Ontario. This concerns me. ~Joyce