A Study Of Water And Sediment Quality As - TO THE TAR SANDS .ca

Table 11. Concentrations of PAHs from 1992 surficial sediments in western Lake
Athabasca (from Bourbonniere et al. 1996, their Table 5, by GCMS method) compared to
those observed at three sites near Fort Chipewyan (this study). Abbreviations:
Naphthalene (Npth); Fluorene (Fl); Phenanthrene (Ph); Fluoranthene (Fth); Pyrene (Py);
Benzo(b)fluoranthene (B(b)Fth); Benzo(k)fluoranthene (B(k)Fth); Benzo(a)pyrene
(B(a)Py); Benzo(ghi)perylene (B(ghi)Per). See Figure 9 for site locations. Values are in
micrograms / kg ( = nanograms / g).
Site Npth Fl Ph Fth Py B(b)Fth B(k)Fth B(a)Py B(ghi)Per
G 4.8 *ND (0.5) 22 11 18 24 ND (0.5) ND (0.5) ND (0.5)
B ^ tr (2.7) ND (0.5) 26 11 18 29 ND (0.5) 8.9 22
D 8 ND (0.4) 42 12 21 35 ND (0.4) 15 30
H tr (2.0) ND (0.6) 25 11 13 36 ND (0.6) ND (0.6) 29
I tr (1.7) ND (1.0) 29.5 15 13.5 40.5 ND (1.0) 17.5 35
Mission ** ^^ 20 NA 10 10 ND (10) ND (10) NA
Creek ND (10) NA
LA water ND (10) NA 10 NA ND (10) 10 ND (10) ND (10) NA
intake
Fletcher
Channel
ND (10) NA ND (10) NA ND (10) ND (10) ND (10) ND (10) NA
^ trace values are greater than the method detection but less than the quantitation limit
* ND values are less than the method detection limit (given in parentheses)
** ND values are less than the method detection limit (given in parentheses)
^^ NA = not assessed
Table 12. Maximum concentrations of nine PAHs in the Athabasca River between Fort
Creek and Embarras, fall 1997 to 2003 (from Imperial Oil, 2006, volume 3, their Table 5-
29). Exceedences of guidelines are bolded. PAH assay method was not specified.
PAH Maximum
Observed
(µg/kg)
Interim Sediment
Quality Guideline
(CCME 2002,
µg/kg)
40
N Comments
Naphthalene 37 34.6 22
Acenaphthene 11.3 ? 21 no CCME standard, but Imperial (2006)
listed the maximum concentration as an
exceedence
Dibenzo(a,h)
41.7 6.22 22
anthracene
Benzo(a)anthracene 27 31.7 22
Benzo(a)pyrene 95 31.9 22
Chrysene 1010 57.1 20
Fluoranthene 65.5 111 22
Phenanthrene 189 41.9 22
Pyrene 435 53.0 22