Figure 3: Concentrations of dissolved zinc (Zn) as a function of treatment and sample type. Samples types are presented in the following order: overlying water (top panel), sediment water interface water (2nd panel), pore water at 1 cm (3rd panel), and pore water at 2.5 cm (bottom panel). Where appropriate and applicable, concentrations as determined by use of different sampling techniques are identified within the top right-hand corner of respective panels. Individual measurements are shown as circles and color represents replicates, measurements below detection are illustrated with a less than symbol (“<”) plotted at the detection limit, qualified samples due to blank contamination are illustrated with an asterisks (*), and date qualified as “estimated” are represented with the symbol “E” at the estimated value. The 25th and 75th centiles from the maximum likelihood estimate (MLE; see Supplemental Materials) calculated distribution is used for the edges of the box, the median is shown as a horizontal line drawn through the middle of the box. Whiskers show maximum and minimum values exclusive of extreme values. Extreme values were identified as values that were more than 1.5 times the inter-quartile range above the 75th or below the 25th centiles. Treatments included negative controls with water only (H2O) and artificial sediment (CTRL), reference sediments from Lower Arrow Lake (LALL) and Genelle (GE), and site sediments from Deadman’s Eddy (DE), Northport (NP), Little Dallas (LD), Upper Marcus Flats (UMF) and Lower Marcus Flats (LMF).