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. Author manuscript; available in PMC: 2015 May 15.
Published in final edited form as: Water Res. 2014 Feb 17;55:133–142. doi: 10.1016/j.watres.2014.02.021

Figure 1.

Figure 1

Comparison of BFR levels in U.S. sewage sludges from EPA National Sewage Sludge Surveys conducted in 2001 and 2006/7. Percentage values within parenthesis represent increases (+) or decreases (−) in mean concentrations from 2001 to 2006/7. The y-axis scale for BDE-99, BDE-100, and BDE-209 is in thousands.