Table 1.

Measured values of EE2. Water was renewed after 24 h of exposure. Samples for water chemistry at Time 0, just prior to renewal, just after renewal, and at the completion of the study.

Target conc.	Time 0	24 h	Time 0 renewal	24 h	Average conc.
0	0.03	0.06	0.00	0.00	0.02
0.125*	0.09	0.00	0.15	0.07	0.08
1.25	1.37	1.15	1.40	1.49	1.35
2.5	2.73	2.46	2.77	2.40	2.59
5	5.28	5.11	5.89	5.15	5.36
10	10.67	9.43	11.87	11.50	10.87
Target Conc	Time 0	24 h	Time 0 renewal	24 h	Average conc.
0	0.00	0.00	0.00	0.00	0.00
10	8.51	8.91	10.47	8.31	9.05

Units are ng/L EE2.

^*indicates at minimum reporting limit.