ELECTRONIC SUPPLEMENTARY MATERIAL
SI1 Changes in concentration with depth
Section 3.1 of the text documents the observed increase in measured PAH concentrations with sample
depth. The data were not conclusive in terms of quantitatively characterizing the relationship between concentration,
molecular weight, and sample depth, but Fig. SI6 show the general trend that was observed.
SI2 AC treatment curves for additional PAHs
Section 3.1 presents the reduction of Pyrene as a function of the percent of amended AC for two sediments
with different levels of PAHs. Fig. SI7 shows the treatment curve results for Phenanthrene and Fig. SI8 shows the
results for Benzo(a)Anthracene.
Figure Captions
SI6. SPME samplers were inserted into contaminated sediment and equilibrated for 7 days. After 7 days the
SPME fibers were removed from the sampler, any soil residue was rinsed off of the fibers with deionized
water and any water was removed by lightly padding the SPME fiber with a Kimwipe. The SPME fiber
was then scored at 1 cm intervals on a glass sheet prior to extraction and analysis. The plotted results show
that there is a general increasing trend in concentration with depth.
SI7. Phenanthrene pore water concentrations and bioavailability reduction versus AC additions for sediment
with two levels of contamination. SPME samplers were equilibrated for 7 days.
SI8. Benzo(a)Anthracene pore water concentrations and bioavailability reduction versus AC additions for
sediment with two levels of contamination. SPME samplers were equilibrated for 7 days.
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