Table 1.

Estimated HC5s and 95% CIs for TPH, PAH and parent naphthalene from several SSDs developed with data from cold-water species (Arctic/sub-Arctic) and non-Arctic species (combined) for water accommodated fractions (WAF, including MEWAF) and chemically enhanced WAF (CEWAF) combining all available data for fresh light (API gravity 31.3–44; 16 oils) and fresh medium (API gravity 24.8–30.6; 4 oils) oil products.

Exposure media¹	Species group	Analytes	HC5 (95%CI) µg/L	Most sensitive species	SSD Percentile
WAF+ MEWAF	Cold-water	TPH	1,259 (988–1,583)	Salvelinus malma	20^th
	Cold-water	Naphthalene	32.4 (28.9–36.4)	Boreogadus saida	14^th
	Non-Arctic	TPH	579 (427–767)	Montastraea faveolata	5^th
		PAH	41.1 (32.1–51.6)	Dendraster excentricus	11^th
		Naphthalene	32.9 (28.9–37.4)	D. excentricus	11^th
CEWAF	Non-Arctic	TPH	2,909 (2,247–3,720)	Crassostrea gigas	7^th
		PAH	285 (265–305)	Holmesimysis costata	20^th
		Naphthalene	50 (41–60.2)	H. costata	20^th