FIGURES 
Number Page 
1 Lower Chester River showing oyster tray stations 
1 thru 6. 12 
2 Lower Chester River showing oyster tray stations 
6 thru 10. 13 
3 Mortality of golden shiners, by station, over the 
96-hour observation period . 31 
4 Excess mortality of golden shiners, by station, 
during 96 hours of observation . 33 
5 Map of Chester River illustrating sample sites ... 40 
6 Downstream progession of oyster mortality . 41 
7 GCMS of Chester River mouth sediment extract .... 46 
8 Liquid chromatography of Tenneco Products designated 
by Tenneco as Alkyl Phthalates, or mixtures 
(6-10P and 7-11P). 57 
9 Liquid chromatogram of DOP, DIDP, and DTDP 
(synthetic mixture of Tenneco samples) . 58 
10 Liquid chromatogram of Tenneco pond water . 59 
11 Liquid chromatogram of Tenneco pond sediment .... 61 
12 Liquid chromatogram of Morgan Creek sediment from 
Frye Farm a few miles downstream from Tenneco ... 63 
13 Comparison liquid chromatogram of humic acid .... 63 
14 Comparison of GCMS-SIM chromatograms . 70 
15 Oyster tissue extract (spiked with 20 ppm DEP, 
DBP, and DEHP) . 78 
16 Oyster tissue extract . 79 
xi 
