14 



Table 1-5 



MQR Amphipod Bioassay Sediment Toxicity Results 



Sample 



No. Exposed 



No. Survive 



Percent Survival 



Reference 



20 



19 



95.0 



Reference 



20 



20 



100.0 



Reference 



20 



19 



95.0 



Reference 



20 



15 



75.0 



Reference 



20 



18 



90.0 











MQR 



20 



2 



10.0 



MQR 



20 



9 



45.0 



MQR 



20 



9 



45.0 



MQR 



20 



6 



30.0 



MQR 



20 



5 



25.0 



Summary of the survival data for 10-day solid phase test with Ampelisca abdita. 



Station 



Percent Survival 



Statistically 

 Significant 



Biologically 

 Significant 



Reference 



91 







MQR 



31 



* 



** 



* Statistically significant reduction relative to the performance of the control. One way t- 

 test, alpha = 0.05, n=5. 



** Biologically significant: significant reduction relative to control and less than 80% of 

 control response. 



Sediment Core Chemistry Data Summary from the MQR Mound, August and December 1991 



