Table 7.

Hazard quotients for maximum-exposed Harlequin Ducks.^a,b

			Factor Below Threshold
	NOAEL HQ	LOAEL HQ	NOAEL	LOAEL
Base Model Oiled
Adult Female
Summer	0.00231	0.00022	434	4461
Winter	0.00236	0.00023	424	4358
Adult Male
Summer	0.00237	0.00024	422	4120
Winter	0.00241	0.00025	415	4049
Juvenile Female
Summer	0.00258	0.00025	388	3989
Winter	0.00242	0.00023	414	4256
Juvenile Male
Summer	0.00266	0.00027	376	3676
Winter	0.00247	0.00025	405	3959
Base Model Reference
Adult Female
Summer	0.00167	0.00016	599	6162
Winter	0.00171	0.00017	585	6020
Adult Male
Summer	0.00172	0.00018	583	5691
Winter	0.00175	0.00018	572	5589
Juvenile Female
Summer	0.00187	0.00018	535	5503
Winter	0.00175	0.00017	571	5875
Juvenile Male
Summer	0.00192	0.00020	520	5074
Winter	0.00179	0.00018	560	5465

^aHazard Quotient is the ratio of an assimilated dose to the TRV, where HQ ≥ 1 indicates the exposure could lead to chronic effects and HQ < 1 indicates no ecologically relevant adverse chronic effect would occur.

^bMaximum-Exposed Harlequin Duck receives the 99.9% quantile (1-in-1000th) highest exposures out of the simulated population of 500,000 seaducks.