Table 3.

Daily average river concentration in ng/L (std dev)^a predicted by the model of exposure from 1995 to 2010.

Year	Bif	Cyf	Cyhal	Cyper	Delta	Fenv	Perm
1995	--	0.5 (0.3)	--	0.5 (0.4)	--	0.0 (0.0)	0.2 (0.2)
1996	--	1.1 (1.8)	--	0.9 (1.3)	--	0.0 (0.0)	0.3 (0.2)
1997	0.0 (0.0)	1.7 (2.1)	--	2.4 (3.0)	0.0 (0.0)	0.0 (0.0)	0.4 (0.2)
1998	0.4 (0.9)	0.6 (0.4)	0.8 (0.5)	0.9 (0.8)	0.0 (0.0)	0.0 (0.0)	0.2 (0.1)
1999	0.4 (0.3)	0.8 (0.5)	0.4 (0.4)	0.9 (0.6)	0.2 (0.3)	0.0 (0.0)	0.2 (0.1)
2000	0.1 (0.1)	1.1 (1.5)	0.6 (0.6)	1.2 (1.1)	0.7 (0.8)	0.0 (0.0)	0.3 (0.2)
2001	1.1 (0.9)	2.7 (1.9)	0.7 (0.5)	2.9 (1.7)	1.6 (1.6)	0.0 (0.0)	0.7 (0.3)
2002	2.6 (0.9)	2.8 (0.9)	0.2 (0.1)	2.8 (1.4)	1.1 (1.3)	0.0 (0.0)	0.5 (0.2)
2003	2.3 (0.9)	4.8 (2.7)	0.1 (0.1)	2.3 (2.1)	0.1 (0.1)	0.0 (0.0)	0.4 (0.1)
2004	2.6 (1.4)	4.1 (4.0)	0.1 (0.1)	2.4 (1.4)	0.1 (0.1)	0.0 (0.0)	0.4 (0.2)
2005	1.9 (1.3)	3.4 (4.5)	1.4 (3.9)	1.3 (0.8)	0.1 (0.0)	0.0 (0.0)	0.2 (0.1)
2006	1.5 (1.4)	1.1 (1.1)	0.5 (1.2)	1.0 (1.0)	0.2 (0.6)	0.0 (0.0)	0.3 (0.2)
2007	5.0 (1.7)	4.0 (5.9)	0.5 (0.9)	2.0 (0.7)	0.3 (0.5)	0.0 (0.0)	0.6 (0.1)
2008	7.1 (3.2)	4.1 (2.4)	0.4 (0.1)	1.7 (0.7)	0.0 (0.0)	0.0 (0.0)	0.9 (0.1)
2009	5.3 (2.3)	1.9 (1.1)	0.6 (0.4)	1.0 (0.4)	0.5 (0.3)	0.0 (0.0)	0.6 (0.3)
2010	1.6 (1.1)	1.3 (0.9)	0.2 (0.1)	0.4 (0.3)	0.6 (0.6)	0.0 (0.0)	0.1 (0.1)

Bif – bifenthrin, Cyf – cyfluthrin/beta cyfluthrin, Cyhal – cyhalothrin/lambda cyhalothrin, Cyper – cypermethrin, Delta – deltamethrin, Fenv – fenvalerate/esfenvalerate, Perm - permethrin

^aCalendar year average of predicted pyrethroid concentrations for days of measured precipitation.