and fouling communities were still sparse at Stations 6, 7, 8, 9 
and 10. By 18 September fouling communities seemed back to nor¬ 
mal at all stations inspected; that is, all stations but 2 and 5. 
Golden Shiner Experiment 
Mortality was high at all stations including the controls. 
Figure 3 is a graphic representation of mortality over time. 
Excess mortality, that is mortality of controls minus mortality 
of experiments, is shown in Figure 4. Ranked in descending order 
of total survivorship the stations are Tenneco Downstream and 
Control, with Tenneco Pond, Campbell Upstream, and Campbell Down¬ 
stream all having the same survivorship and with The Sewage Plant 
having the lowest survivorship. Sewage Plant station is unique 
in the excess mortality curves in that all nonzero values are 
negative, that is mortality was higher than control mortality at 
all times. 
> 
QC. 
z> 
CO 
Figure 3. Mortality of golden shiners, by station, over the 
96-hour observation period. 
31 
