Table 8.

Calculated estrogen equivalents (EEQ in nanograms per liter) relative to 17β-estradiol of extracts from polar organic chemical integrative samplers deployed in spring 2007 as measured by the yeast estrogen screen or BLYES

	Gauley	South Branch Petersburg	Shenandoah South Fork	Shenandoah North Fork	Shenandoah Mainstem	Conococheague Creek
Deployment date (days)	May 3–June 7 (35)	April 27–May 31 (34)	April 5–May 9 (34)	March 22–May 9 (48)	March 28–May 9 (42)	April 11–May 9 (28)
YES EEQ	BD	3.6	5.0	4.1a	2.3b	9.1
BLYES EEQ	BD	2.3	7.3	ND	ND	9.1

BD below detection, BLYES bioluminescent yeast estrogen screen, YES yeast estrogen screen, ND no data

^aFrom Alvarez et al. (2008a). Sites are the same as fish where fish were collected spring 2007